RU2617244C1 - Transportable gas filling unit - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: transportable gas filling unit contains the carrying frame, adapted to be mounted on a chassis frame of the truck (12) and performed with the side members (3), the cross members and support pillars (6) in the operating vertical position, having the possibility to be in the transporting vertical position by means of mechanical actuator (13). The cassettes (1) connected between each other with gas cylinders (2) are mounted on the carrying frame, each of which is designed as the box shaped structure with walls, located along the corresponding side member (3) edge. The gas cylinders (2) are mounted so, that the gas cylinder body rests on the surface of the holes (8), presenting in the cassettes walls (1) and located as close as possible to each other. Mechanical drive is configured as a single-worm gear (13) for each support pillar (6) providing the vertical turn between the working and transport position.

EFFECT: expansion of the similar purpose means range, while reducing the material consumption on the way to simplify the device and by improving the load distribution force diagram.

5 cl, 4 dwg

Description

The invention relates to transportable means providing gas to consumers, in particular compressed natural gas, with refueling without a booster compressor.

From European patent EP No. 1715240, transported cartridges with gas cylinders are known, each of which is mounted on a separate module, which is a supporting inclined frame with support racks and means for fixing the cartridge in an inclined position. At the same time, the modules (supporting frames) are installed in a row to ensure the overload of cartridges pre-delivered by the trailer, one cartridge per corresponding module. Cassettes are overloaded by moving each cassette in the transverse direction from the trailer frame in an inclined position to the inclined guides connecting the trailer frame to the inclined frame of a separate module. In turn, the inclined carrier frame of the module is a continuation of the inclined guides. To hold the cartridge with gas cylinders in an inclined position, the module is equipped with means for fixing it.

The known design is characterized by complexity due to the need to perform the inclined position of the frame, the presence of guides for the cassettes to slide from the trailer to the supporting frames, as well as fixing means.

Known transported gas filling units from RF patents for utility models No. 53634, No. 79499 and inventions No. 2381920, No. 2383453.

Each technical solution from these patents contains a mobile gas refueling unit - a semi-trailer transported by truck. Such a gas refueling unit turns off the carrier frame with cassettes with gas cylinders located on it, while the frame rests on the support posts (in their working position), made with the possibility of bringing into transport position. Cassettes are structures formed by power racks and horizontal elements on which gas cylinders are laid.

When using the known mobile transported gas refueling units, some disadvantages are found.

In particular, the longitudinal elements of the support frame from the action of gravity of the cartridges with gas cylinders are experiencing loads, accompanied by stretching with bending. This type of deformation is caused by the fastening of each cartridge with gas cylinders directly to the frame.

Similar designs of supporting racks of the supporting frame provide for stepwise height adjustment. For this reason, failure to achieve fine adjustment to align the position of the supporting frame leads to the action of torsional-bending loads on the specified frame.

In addition, the known tool, being mobile, in addition to static loads in the working position, experiences dynamic loads in the transport position during the movement of the truck. Therefore, to ensure the bearing capacity and prevent the impact of dynamic and static loads on the supporting frame, including bending loads from cassettes with gas cylinders, the frame elements are made massive.

A semitrailer with gas cylinder cartridges is a complex device due to the design of the semitrailer itself, which contains a wheel module with a suspension, braking means, a coupling unit with a tractor.

As the closest analogue to the claimed invention selected technical solution according to the patent of the Russian Federation No. 2383453.

The problem to which the invention is directed, is to expand the arsenal of tools for this purpose while reducing material consumption by simplifying the device and by improving the power distribution of loads (under bending loads).

The objective is achieved by the fact that the transported gas refueling unit includes a supporting frame with spars, cross members and support legs in a working vertical position, adapted to bring into transport position, cassettes with gas cylinders mounted on a supporting frame, each of which is made in the form of a box frame with walls located along the edge of the corresponding spar, and the cassettes are interconnected, gas cylinders are installed so that the body of the gas cylinder rests on the surface of the holes present in the walls of the cassettes and located as close as possible to each other; The supporting frame is designed for installation on the chassis frame of a truck.

In the proposed gas refueling unit:

- the cross-pieces are intermediate cross-members located between two end cross-members, to which four support legs are connected, and the end cross-members are made with protruding parts extending beyond the side members and having a trough-like profile open towards the edge, a housing is installed on the outside of each protruding part the corresponding worm gear, providing vertical rotation of the support rack between the working vertical position and the transport vertical position, the connection of the support posts with the cross member is organized through the connecting elements of the L-shaped form, each of which is a continuation of the corresponding support posts and comes with its free end into the indicated open profile of the corresponding protruding part, and the output shaft of each worm gearbox passing through the protruding part is connected with the free end of the corresponding connecting element;

- supporting racks are made with the possibility of height adjustment;

- the distance between the support racks in the upright working position is selected from the condition of ensuring free entry / exit of the truck chassis under the carrier frame and from under the specified frame;

- cassettes are interconnected from above by a bolt fastening the upper belt of the frame.

The invention is illustrated as follows.

The installation of cassettes with gas cylinders on a supporting frame with support racks made with the possibility of bringing them into a working vertical position and transport position, determines a new design and layout solution of the transported gas refueling unit, expanding the range of well-known mobile gas tankers.

The implementation of the cartridges in the form of a box-shaped frame with parallel walls having openings located as close as possible to each other, makes it possible to place the body of each gas cylinder on the surface of two opposing openings. The condition for the closest possible location of the holes on one wall follows from the need for storage and transportation of gas cylinders separated by spacers. Based on this need, continuous fragments of the surface of the walls between the holes act as spacers.

The orientation of the interconnected cartridges with gas cylinders with the arrangement of the walls of the cartridges along the side members determines the formation of a raft, which can be considered as an integrated cartridge. At the same time, the frame of each cartridge is a traditional metal structure with uprights, longitudinal and transverse crossbars (relative to the elements of the supporting frame); there are lateral connections on the sides of the frame for rigidity.

The length of the supporting frame is calculated to accommodate two or more cassettes with a size of 2000 × 2000 × 2500 mm, corresponding to its length, width and height.

The integration of cassettes with gas cylinders in the raft improves the power load distribution scheme with a decrease in bending loads on the frame. Confirmation of this is the comparison of bending moment diagrams for a supporting frame loaded with separately standing three cassettes, as in the prototype device of the RF patent No. 2383453, and for a supporting frame according to the invention, loaded with integrated three cassettes. When comparing the diagrams, it is fair to assume zero stiffness of the cassettes, therefore, the same loading of the circuit beams on the weight of gas cylinders.

In FIG. 1 shows the layout of three separate (disconnected) cassettes on the beam AB and the plot of bending moments. In this case, P is the mass of one cartridge, 1 is the length of one cartridge, and a is the distance from the edge of the cartridge to the support, b are the gaps between the cassettes, which can be neglected. On the plot of bending moments:

In FIG. 2 is a block diagram of a block of three integrated cartridges (lettering is identical to that in FIG. 1). On the plot of bending moments:

A comparison of formulas (1) and (2) shows that with a block of integrated cartridges, the greatest bending loads on the supporting frame are much less (by the value of P1) than with the layout of the cartridges separated. In the case when the supporting edges of the integrated container are located strictly above the supports A and B (at a = 0), this beam will not experience bending (M = 0).

The following describes the strength properties of the claimed device.

The maximum bending stresses in the beam are determined by the formula:

where σ is the bending stress; M is the bending moment in the corresponding section of the beam; W is the bending moment of the resistance of the section (profile) of the beam.

Thus, the strength of the beam is determined by the moment of resistance of its profile to bending.

To justify the strength properties of the structure, a tubular profile of rectangular section is used as its model, compared with the I-beam section of the beam used in the specified prototype device.

The moment of resistance to bending profiles is expressed by the formula:

where B, b are the external and internal dimensions of the compared profiles in height; H, h - external and internal dimensions of the profiles in width.

According to formula (4), the moment of resistance to bending is proportional to the value of the height of the profile raised to the second degree. As it was indicated, the height of the cartridge is equal to 2500 mm, and the height of the I-beam is taken equal to 150 mm, therefore, the ratio of the profile height of the compared sections gives a significant excess of the bearing capacity of the tubular profile (integrated cartridge section) in comparison with the I-beam.

The tubular profile as a model of integrated cartridges refers to thin-walled profiles, based on the ratio of height (2500 mm) to wall thickness (10 mm), which has rigidity due to the presence of four ribs and strength.

Based on the foregoing, it follows that interconnected cartridges with gas cylinders mounted on a supporting frame create a single power system with strength and spatial rigidity, capable of withstanding static and dynamic loads. In addition, the claimed invention has a simple and reliable design compared to the prototype device, eliminating the need for a semi-trailer equipped with appropriate means, in particular a wheel module, braking means, a coupling unit.

These properties are directly related to the reduction of the material consumption of the structure along the path of reducing metal consumption and the release of expensive semi-trailers.

Disclosure of the invention complement some design features.

To perform the function of gas filling, the claimed device occupies the so-called working position on the supporting posts of the supporting frame. In this case, the support legs are connected with the end cross members of the supporting frame, i.e. for a stable position of the entire structure of the gas filling unit, the support posts support it at four angles.

The end cross members are made with protruding parts (protrusions) having a trough-shaped profile open to the side of the edge for constructive connection of the support posts with end cross members, if it is possible to bring the support posts to the working / transport position using a mechanical drive.

The mechanical drive is made in the form of four worm gears (in terms of the number of support posts), which ensure that the support posts are rotated in a vertical plane between the working vertical position and the transport vertical position. The housing of the respective worm gearbox can be mounted on the outside of each protruding portion of the end cross members.

The presence of L-shaped connecting elements, which are a continuation of the support struts and protruding into the open profile of the protrusions of the end cross members, determine the possibility of the working position of the support struts at an optimal distance (in the transverse direction), selected from the condition of placing a truck chassis between them. This condition corresponds to the need to transport a gas refueling unit with the possibility of entry / exit of the truck chassis to and from the indicated unit.

The connection of the worm gearbox passing through the protruding part of the output shaft cross member with the L-shaped element determines the rotation of the support posts around an axis that coincides with the axis of the output shaft, and at the same time, the location of the support posts in the transport vertical position, inverted (relative to the working position) and located along cassettes.

Means for bringing the racks into working or transport position do not complicate the proposed device due to the possibility of performing a traditional mechanical drive and the optimal number of connections.

The presence of intermediate cross members is necessary for the structural rigidity of the supporting frame.

The implementation of the support posts adjustable in height brings its advantages, namely: the convenience and reliability of using the utility model, manifested when it is necessary to place the gas filling unit on an uneven and / or level surface of the site.

In more detail, the transported gas filling unit is illustrated in the drawings. In FIG. 3 shows a general view of the device, FIG. 4 is a rear view of the device relative to the truck.

The inventive device comprises three cassettes 1 with gas cylinders 2 mounted on a supporting frame with spars 3, edge cross members 4, intermediate cross members 5 and support posts 6 between them.

Each cassette 1 is made in the form of a metal structure, which is: a box-like frame with parallel walls 7 having openings 8; the walls 7 are attached to the uprights and longitudinal beams relative to the direction of the side members 3; the frame contains transverse crossbars, side connections that can be made inclined (not shown in the drawings). Cases of gas cylinders 2 are placed in the holes 8 with support on their surface. The closest possible location of the openings 8 is explained by the need to perform a gas filling unit for its function: to ensure the maximum capacity of transported gas cylinders (subject to safety conditions during transportation and storage of gas cylinders). A similar cartridge for gas cylinders is known from the description of the patent for utility model of the Russian Federation No. 159348 with the disclosure of the possibility of its use.

Cassettes 1 are installed on the side members 3 and are attached to them along the perimeter by a bolted connection. Between themselves, the cassettes 1 are also connected from above using a bolted connection fastening the adjacent (upper) crossbeams of the frame.

The spar 3 in cross section consists of two channels facing the shelves in different directions and connected by plates from above and below (Fig. 4). Between the side members 3, guides 9 are arranged for sliding the rollers 10 along them, which can be equipped with the frame 11 of the truck 12 for the convenience of entering under the gas filling unit on the supporting posts 6, and leaving it.

For transportation of the gas filling unit, the truck frame is equipped with means for attaching the carrier frame.

In FIG. 3, 4, the supporting posts 6 are shown respectively in the transport vertical position and in the working vertical position; using a manual drive in the form of a worm gear 13 of the rack 6 rotate in a vertical plane between the working position with the support on the platform and the transport vertical position.

To connect the support posts 6 with the end cross members 4, the latter are made with protruding parts (protrusions) 14 having a trough-like profile open towards the edge of the cross member 4, and each support post 6 is provided with a corresponding L-shaped connecting element 15, which is its continuation, when this free end of each connecting element 15 is installed with the entry into the "own" ledge 14. The housing of the worm gear 13 is mounted on the outside of the protruding part 14 of the end cross members 4 with the possibility of control using the handle 16, while the output shaft (not shown) of the actuator 13 is located across the protrusion 14 and passes through the setting end of the connecting element 15.

When the support posts 6 are in the transport position, the connecting element 15 rests on the bottom of the trough-like profile of the protruding part 14, while the inverted support column 6 is as close as possible to the cassette 1, thereby ensuring the compactness of the device during transportation in compliance with the transport dimensions (Fig. 3).

In the working and transport positions, the support posts are fixed.

Each end cross member 4 in the middle part located between the side members 3 has a box section, which is the most durable.

The implementation of height-adjustable support racks 6 may be similar, for example, to the technical solution described in patent SU No. 1532382 "Support device of the semi-trailer" or other known solutions.

In this example, telescopic support posts 6 are used, each with a support foot 17; racks 6 are selected from the catalog of purchased products under the number 5205-2700035-03 as a structure with the possibility of smooth adjustment in height, achieving alignment of the supporting frame in order to eliminate torsional-bending loads.

Support racks 6 are housing elements; the length of each rack 6 is regulated by a spindle (not shown in the drawing) located inside the rack. The helical gear drive is made, for example, in the form of a bevel gear controlled by a handle (not shown in the drawings).

The gas refueling transporting unit is equipped with shut-off and control valves (not shown in the drawing) and a control unit 18, designed to account for released gas and control technological parameters.

The control unit 18 is mounted on the rear end cross member 4 (relative to the position of the gas refueling unit on the truck).

The device operates as follows.

In the transport position with the struts retracted, the gas refueling unit is delivered to the consumer’s platform by truck 12. The support struts 6 from the transport vertical position by means of a mechanical drive 13 are installed in the working position, relying on the platform. If necessary, the support posts 6 are height-adjustable to achieve a stable horizontal position of the carrier frame with cartridges 1. After installing the gas refueling unit on the site, the truck 12 moves out from under it.

Further preparation of the gas filling unit for operation is carried out by adjusting the shut-off and control valves together with the control unit 21.

To remove a unit with empty gas cylinders from the consumer’s platform, the truck in the position that ensures the rollers 10 of the frame 11 of the car 12 slide along the guides 9, drives under the gas filling unit, after which the support posts 6 are rotated to the transport position. The filling unit is ready for transport again.

The transported gas filling unit expands the range of known similar means and makes it possible to use it as a replaceable unit in the well-known “swap body” system (swap body); This unit is designed for delivery to the consumer by a Maz-6312B5 truck with a frame structure adapted to the supporting frame of the unit itself, and can be used to serve compressed gas consumers in vehicles with gas equipment, at mini-gas stations as a fuel power unit , for small boiler houses for temporary meals.

Claims (5)

1. A transportable gas refueling unit, including a supporting frame with spars, cross members and support legs in a working vertical position, adapted to bring into transport position, cassettes with gas cylinders also installed on the supporting frame, each of which is made in the form of a box frame with walls located along the edge of the corresponding spar, and the cassettes are interconnected, gas cylinders are installed so that the body of the gas cylinder rests on the surface of the holes, cassettes located in the walls and located as close as possible to each other; The supporting frame is designed for installation on the chassis frame of a truck. 2. The transported gas filling unit according to claim 1, characterized in that the cross-pieces are intermediate cross-members located between two end cross-members, to which four support legs are connected, the end cross-sections being made with protruding parts extending beyond the side members and having a trough-like profile open towards the edge, on the outside of each protruding part, a housing of the corresponding worm gear is installed, providing vertical rotation of the support column between the work vertical position and transport vertical position, while the connection of the support posts to the cross member is organized through L-shaped connecting elements, each of which is a continuation of the corresponding support post and its free end extends into the indicated open profile of the protruding part, and the output shaft of each worm gear passing through the protruding part is connected to the free end of the corresponding connecting element. 3. The transported gas refueling unit according to claim 2, characterized in that the support racks are made with the possibility of height adjustment. 4. The transported gas refueling unit according to claim 1, characterized in that the distance between the support columns in the upright working position is selected from the condition of ensuring free entry / exit of the truck chassis under the carrier frame and from under the specified frame. 5. The transported gas refueling unit according to claim 1, characterized in that the cartridges are interconnected from above by a bolt fastening the upper belt of the frame.

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