RU2683049C2 - Device for vertical fixing cylinders in mobile gas-cylinder installations - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: device for mounting over the neck of vertically arranged cylinders in mobile gas-cylinder installations at the most dense installation of cylinders includes the lower and upper longitudinal beams in the frame of a gas-cylinder installation. To the longitudinal beams transverse lower and upper beams are attached, equipped with flange bushings. Cylinders of the 3rd type (with liners from aluminum alloys) are fixed by the lower and upper transverse beams for the parts of the openings free from composite material. This greatly simplifies the design of cylinders, manufacturing technology and, consequently, their cost, and ultimately, the cost of gas installations.

EFFECT: design of the mounting device provides the possibility of reliable fixation of the cylinders in the gas-cylinder installation, taking into account the tolerance for their length, the change in their length from gas pressure, gas temperature and ambient temperature.

8 cl, 2 dwg

Description

The invention is used in mechanical engineering, in particular in the manufacture of mobile gas-cylinder installations, including mobile automobile gas refueling machines (PAGZ), with a vertical arrangement of cylinders and their fastening by the neck.

Known mobile installation for transporting and storing gas (RF patent 2183571), containing a package of horizontally arranged long pressure vessels rigidly fixed on one side in tool holders with fixation elements, and on the other - in tool holders with fixation elements, with the possibility of movement within the radial clearance. The disadvantages of such a device for mounting cylinders is that in this case:

- on the outer surface of the cylinders it is necessary to perform collars, which complicates their design;

- the used devices for fixing the cylinders do not provide a tight packing of the cylinders in a gas cylinder installation.

Therefore, such a device is not suitable for mounting cylinders when they are vertically located in a gas installation with achieving tight packing of cylinders.

A known module for storing and transporting gas (patent RU 2315227) containing a container with horizontally located cylinders placed therein. The cylinders are equipped with annular protrusions with which they are in contact with each other. The outer surface of the cylinders, including the protrusions, is covered with a layer of porous elastic material, which, when compressed, compensates for the increase in the diameter of the cylinders with increasing pressure. Cylinders are fixed in the container with foam concrete.

The disadvantages of this device for mounting cylinders is that in this case:

- on the outer surface of the cylinders it is necessary to carry collars, which complicates their design;

- when filling the cylinders with gas and emptying them, the cylinders are cyclically resized in length, as a result of which the fixing material will be destroyed and ultimately the module will fail, since the resizing will be much larger than in diameter.

Therefore, despite the tight packing of the cylinders in a gas cylinder installation, such fastening them for a vertical installation is not suitable.

A device for mounting on a vessel a group of high-pressure cylinders mounted vertically (copyright certificate SU 1054196). The lower ends of the cylinders, made in the form of plugs with spherical bearing surfaces, are supported by stops. The cylinders in a vertical position are fixed to the cylindrical part with rigid rectangular frames having central circular cutouts. Frames using yoke elements are fixed to a vertical wall.

The disadvantages of this device are:

- the complexity of the design of the mount;

- the impossibility of creating a gas installation with the most dense placement of cylinders.

A known method of fastening gas cylinders in an upright position (copyright certificate 313047). In this case, vertically mounted cylinders are covered in pairs by a flexible cord.

In this case, the cylinders can be placed in a gas cylinder installation quite tightly.

The disadvantage of this method is the lack of reliability of the fastening of the cylinders in mobile gas installations.

A device for mounting vertically mounted cylinders for the lower and upper necks, free of composite material, in mobile gas-cylinder installations of the company X-Perion (design aspects of the company X-Perion).

In this case, KPG-4 cylinders with non-metallic liners are used. This method of attachment allows you to create a gas installation with the most dense placement of cylinders. A number of cylinders with lower bottoms rests on the lower transverse beam and each cylinder is fixed relative to it by a neck free of composite material. In this case, the lower neck with a threaded end is inserted into the corresponding hole in the lower transverse beam and the cylinder is fixedly fixed with a threaded nut. The upper neck of each cylinder, free from composite material, is placed in an individual device for each cylinder on the upper transverse beam, which allows you to keep the cylinder in a strictly vertical position and compensate for the tolerance on the length of the cylinder, as well as increasing its length by increasing gas pressure and increasing gas temperature when refueling and raising the ambient temperature.

The lower and upper transverse beams are fixedly mounted respectively on the lower and upper longitudinal beams in the frame of the gas installation.

The gas cylinder installation, depending on the capacity, is equipped with the corresponding number of rows of cylinders.

The main disadvantage of this device is its low reliability. This is due to the fact that metal liners are installed on plastic liners in the manufacture of cylinders, which are fixed on the liners when winding with composite material. During the operation of the gas cylinder installation, all vertical and lateral loads are perceived by these embedded elements, which over time can lead to a weakening of their connection with the laners and premature failure of the cylinders.

The prototype closest to the invention is a device for fastening vertically arranged metal composite cylinders KPG-3 to the neck of the cylinders in a gas cylinder installation developed by Luxfer. In this case, to increase reliability, the design of the cylinders is significantly complicated. The liners are made of aluminum alloy. On the necks perform not only internal threads with sealing surfaces, but also external. Steel sleeves with curly flanges are screwed onto the external thread, which are wound with composite material. On the lower neck of the cylinders, the steel sleeves are equipped with an external thread, for which the cylinders are fixedly fixed on the lower transverse beam with special nuts in the same way as in the X-Perion gas cylinder installation.

The main disadvantage of this device is the high cost of the gas installation, due to the complexity of the design and manufacturing technology of cylinders.

Since the main cost of a gas cylinder installation is the cost of cylinders, this automatically leads to an increase in the cost of a gas cylinder installation.

The objective of the invention is to provide a simple reliable device for fixing metal-composite cylinders with aluminum alloy liners when they are vertically arranged with the most dense placement in mobile gas-balloon installations to simplify the design, manufacturing technology and reduce the cost of gas cylinders, and, therefore, reduce the cost of gas-balloon installations.

The problem is solved in that the holes of the lower transverse beams are equipped with flange bushings of elastic material. They placed the lower neck of the cylinders, free of composite material, with the support of their bottoms on the lower transverse beams through the flanges of these bushings.

Bushings made of elastic material soften the effect of power loads (vertical and transverse) on the composite material of the lower bottoms and lower neck of the cylinders.

The upper transverse beams are provided with threaded holes, coaxial holes of the lower transverse beams, threaded ring clamps with lock nuts are placed in the threaded holes, flange bushings similar to the flange bushings of the lower transverse beams are installed in the holes of the clamps to accommodate the upper neck of the cylinders free of composite material with support bottoms of the upper necks to the upper transverse beams through the flanges of these bushings, metal washers and ends of the retainers.

Threaded ring retainers on the upper transverse beams allow you to select the tolerances for the length of the cylinders when installing them in a gas installation.

Locknuts of threaded ring clamps allow you to still fix the position of the clamps after installing the cylinders.

Metal washers between the ends of the threaded ring retainers and the flanges of the bushings protect the latter from wear under the action of loads.

Bushings made of elastic material on the upper transverse beams soften the effect of power loads on the composite material of the upper bottoms and the upper neck of the cylinders.

All this ensures reliable operation of the device.

The problem is also solved by the fact that the upper longitudinal beams are equipped with columns symmetrically located relative to the axis of the gas cylinder installation with threaded ends, the axes of which are located in the same plane as the axes of the holes of the lower and upper transverse beams, while the upper transverse beams are installed on the columns with the possibility of vertical movements guide bushings, between the ends of the guide bushings and nuts on the threaded ends of the columns are elastic elements with pressure washers, and to fix the score newly provertyvaniya from at least each pair of cylinders on the cylindrical part fixed band clamp with rubber gaskets.

The elastic elements on the columns when they are preloaded by the nuts ensure that the upper transverse beams are pressed against the upper longitudinal beams with a force sufficient for reliable fixation of the cylinders in the gas cylinder installation during its movement.

The problem is also solved by the fact that the flange bushings are made, for example, of polyurethane. The elastic elements on the columns are made in the form of a set of Belleville springs.

The problem is also solved by the fact that the preloading force of each elastic element in the row of cylinders is not less than mg / 2, where m is the total mass of cylinders in the row with gas, g is the gravitational acceleration.

This ensures high reliability of the fixation of the cylinders in mobile gas-balloon installations.

The problem is also solved by the fact that the upper transverse beam is made with the possibility of fixing two rows of cylinders, while on the upper longitudinal beams there are four columns with threaded ends in the same plane as the axes of the openings of the lower transverse beams.

This simplifies the design of mobile gas systems.

In FIG. 1 shows a general view of the device, FIG. 2 is a section along AA in FIG. one.

The device of FIG. 1 and FIG. 2 contains two lower and two upper longitudinal beams 1 and 2, rigidly fixed in the frame of the gas installation.

The lower transverse beams 3 are attached to the lower longitudinal beams 1 with holes for the flange bushings 4 of an elastic material, for example, polyurethane. The holes on the lower transverse beams are made taking into account the most dense placement of the cylinders in a row. The lower necks of 5 cylinders 6, free from composite material, are placed in the holes of the flange bushings 4. The cylinders 6 are supported by lower bottoms through the flanges of the bushings 4 on the lower transverse beams 3.

In the upper transverse beams 7, threaded holes 8 are made coaxially with the holes in the lower transverse beams 3.

In the threaded holes 8 there are threaded ring clamps 9, in the holes of which are installed, as in the lower transverse beams 3, flange bushings 4 of elastic material. In the sleeves placed the upper neck 10, free of composite material, cylinders 6.

The upper bottoms of the cylinders 6 through the flanges of the bushings 4, washers 11 and the ends of the annular threaded fasteners 9 are based on the upper transverse beams 7. The annular threaded fasteners 9 are countered by the nuts 12.

Guide columns 13 with threaded ends are fixedly mounted on the upper longitudinal beams 2 symmetrically with respect to the axis of the gas cylinder installation. In the upper transverse beams 7, holes are made for the columns 13. The beams 7 with guide bushings 14 are mounted on the columns 13 with the possibility of movement in the vertical direction in the absence of movements in the transverse directions. Between the upper plane of the guide bushings 14, the pressure washers 15 and the nuts 16, elastic elements 17 are placed on the threaded ends of the columns 13, for example, in the form of a plate spring set.

In the lower cylindrical part of the cylinders 6, each pair of cylinders in a row is fixed with tape clamps 18 with rubber gaskets 19.

Assembly of a gas installation using the proposed device is as follows.

The lower transverse beams 3 are fixedly fixed to the lower longitudinal beams 1. Flange bushings 4 are installed in the openings of the beams 3. A series of cylinders are installed on the lower transverse beams 3, while the necks 5 of the cylinders 6, free of composite material, are introduced into the holes of the flange bushings 4.

The retainers 9 are screwed into the threaded holes 8 on the upper transverse beams 7 so that their lower ends are flush with the lower surfaces of the threaded holes on the upper transverse beams 7. On the neck 10 of the cylinder, free of composite material, sleeves 4 with washers 11 are installed. Upper transverse beams 7 with guide bushings 14 are mounted on columns 13 supported by upper longitudinal beams 2, fixing the cylinders in a vertical position by bushings 4 and threaded ring clamps 9. On guide bushings 14 on columns 13 establish elastic elements 17, washers 15 and nuts 16.

The nuts 16 uniformly load the elastic elements 17 with a force of mg / 2 from the condition of reliable fixation of the cylinders 6 when moving the gas cylinder installation, where m is the mass of cylinders in a row with the gas, g is the gravitational acceleration. By screwing the threaded ring clamps 9 into the threaded holes on the upper transverse beams 7 with washers 11 and flanges of the bushings 4, the cylinders are fixed from vertical movements, choosing the gaps associated with the tolerances for the length of the cylinders. After that, the threaded ring clamps 9 are counter-nuts 12.

The work of the proposed device is as follows.

When filling cylinders with gas, as the pressure in them increases, they elastically deform. At the same time, their length increases. The increase in length can also occur due to an increase in the temperature of the gas or the environment. This change in the length of the cylinders in each row is transmitted to the upper transverse beams 7.

The beams 7 with guide bushings 14 move upward on the columns 13 and additionally compress the elastic elements 17. Thus, with reliable fixation of the cylinders in the gas cylinder installation, conditions are provided for compensating the increments in the length of the cylinders when filling them with gas by compressing the elastic elements 17.

With a decrease in gas pressure in the cylinders, as well as gas temperature, their length decreases and the elastic elements 17 return the upper transverse beams 7 to their original position while maintaining reliable fixation of the cylinders.

The proposed device for attaching vertically mounted cylinders in gas installations allows you to simply compensate for the increase in the length of the cylinders from increasing gas pressure and temperature due to additional compression of the elastic elements.

The proposed device for securing the cylinders with the most dense placement can significantly simplify the design of the KPG-3 cylinders, reduce their cost and, therefore, reduce the cost of mobile gas-cylinder installations, provided that the cylinders are securely fixed in them.

Claims (8)

1. A fastening device for the lower and upper necks of a number of vertically arranged cylinders in mobile gas-cylinder installations, comprising lower and upper transverse beams resting on the longitudinal beams of the gas-cylinder installation frame, with the lower necks of the cylinders free of composite material being placed in the openings of the lower transverse beams and supporting the lower bottoms of the cylinders on them, made with the possibility of fixation on the upper transverse beams from movements in the transverse directions of the upper necks of the cylinders, free from the composite material, as well as fixing the cylinders from turning, characterized in that the holes of the lower transverse beams are equipped with flange bushings of elastic material, in which the lower neck of the cylinders are free from composite material, with their bottoms resting on the lower transverse beams through the flanges of these bushings, the upper transverse beams are provided with threaded holes, coaxial holes of the lower transverse beams, threaded ring clamps are placed in the threaded holes, in the holes of which flange bushings similar to the flange bushings of the lower transverse beams were installed to accommodate the upper necks of cylinders free of composite material with support of the bottoms of the upper necks on the upper transverse beams through the flanges of these bushings and the ends of the clamps; the upper longitudinal beams are equipped with columns symmetrically located relative to the axis of the gas cylinder installation with threaded ends, the axes of which are located in the same plane with the axes of the holes of the lower and upper transverse beams, while on the columns with the possibility of vert -local displacements set upper transverse beam with guiding bushings, between the ends of the guide sleeves and nuts on the threaded ends of the columns are arranged elastic members, and to fix the cylinders from provertyvaniya at least each pair of cylinders fixed on the cylindrical part a belt clamp with rubber gaskets. 2. The device according to claim 1, characterized in that the flange bushings are made, for example, of polyurethane. 3. The device according to p. 1, characterized in that the elastic elements on the columns are made in the form of a set of Belleville springs. 4. The device according to claim 1, characterized in that metal washers are placed between the ends of the threaded fasteners and the flanges of the bushings. 5. The device according to claim 1, characterized in that the upper transverse beam is configured to fix two rows of cylinders, while four columns with threaded ends in the same plane as the axes of the openings of the lower transverse beams are placed on the upper longitudinal beams. 6. The device according to claim 1, characterized in that the preloading force of each elastic element in the row of cylinders is at least mg / 2, where m is the total mass of cylinders in the row with gas, g is the gravitational acceleration. 7. The device according to p. 1, characterized in that the threaded ring retainers are equipped with locknuts. 8. The device according to p. 1, characterized in that the columns between the elastic elements and nuts are equipped with pressure washers.

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