Novel auxiliary air supply unit assembly for motor train unit

Abstract

The utility model relates to a novel auxiliary air supply unit assembly for a motor train unit. The novel auxiliary air supply unit assembly comprises an electrical control system, an auxiliary air supply system and a frame used for installing the electrical control system and the auxiliary air supply system. The blowback electromagnetic valve is arranged on a gas circuit board of the electrical control system; a transition block is arranged between the blowback electromagnetic valve and the gas circuit board; and the air cylinder drain cock is arranged at the lower part of a gas circuit board of the electrical control system. According to the novel auxiliary air supply unit integration for the motor train unit, the blowback electromagnetic valve and the air cylinder drain cock are arranged on the air circuit board and are sealed and protected through the box body, the box body door and the sealing strip between the box body door and the box body, so that the protection problem of the blowback electromagnetic valve and the air cylinder drain cock is effectively solved, and the service life of the blowback electromagnetic valve and the air cylinder drain cock is prolonged. The appearance of the blowback solenoid valve and the air cylinder drain cock is prevented from being collided and damaged due to the operating environment problem, and coil burning loss or poor action caused by rain, snow and water vapor on the solenoid valve is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary air supply equipment for motor trains, and in particular to a new type of auxiliary air supply unit integration for motor trains. Background Art

[0002] The back-blowing solenoid valve of the Fuxing auxiliary air compressor is installed near the back-blowing port of the adsorption dryer. When the air compressor stops, the back-blowing solenoid valve delivers compressed air to the back-blowing port of the dryer, pushing the internal sewage mechanical valve of the dryer to open, realizing the automatic sewage discharge function. The function of the air cylinder drain plug is to regularly discharge the cold energy water and impurities in the air cylinder to ensure that the compressed air is clean and dry.

[0003] The back-blowing solenoid valve and air cylinder drain plug integrated in the existing auxiliary air supply unit are exposed outside the box. Through online operation faults, it was found that the back-blowing solenoid valve is an electrical component, and there is a transition circuit board inside the junction box. It is exposed in the equipment compartment under the vehicle and is easily affected by moisture, which causes the pins of the solenoid valve transition circuit board to corrode, affecting the entire auxiliary air compressor and preventing it from supplying air to the vehicle normally. The air cylinder drain plug is currently installed at the bottom of the auxiliary air compressor, close to the height of the bottom support leg, and is easily damaged during storage. At the same time, if the equipment compartment under the vehicle is not well protected, the drain outlet is easily blocked by snow or ice, resulting in failure to drain. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a new auxiliary air supply unit integration for EMU, including an electrical control system, an auxiliary air supply system and a frame for installing the electrical control system and the auxiliary air supply system;

[0005] The electrical control system includes an air circuit board and a working air cylinder;

[0006] The auxiliary air supply system includes a back-blowing solenoid valve, an air cylinder drain plug, a back-blowing air cylinder, a dryer and an air compressor;

[0007] The blowback solenoid valve is arranged on the gas circuit board of the electrical control system; a transition block is arranged between the blowback solenoid valve and the gas circuit board;

[0008] The air cylinder drain plug door is arranged at the lower part of the air circuit board of the electrical control system.

[0009] On the basis of the above scheme, the air inlet of the air cylinder drain plug is connected to one end of a drain pipe arranged on the other side of the air circuit plate; the other end of the drain pipe is connected to the bottom of the working air cylinder.

[0010] On the basis of the above scheme, the air outlet of the air cylinder drain plug door is connected with the drain outlet at the bottom of the air circuit board through the air passage inside the air circuit board.

[0011] On the basis of the above scheme, the air inlet of the back-blowing solenoid valve is connected to the back-blowing air inlet pipe arranged on the other side of the air circuit board through the air channel inside the air circuit board.

[0012] Based on the above scheme, the air outlet of the back-blowing solenoid valve is connected to the back-blowing air outlet pipe arranged on the other side of the air path plate through the air channel inside the air path plate; the back-blowing air inlet pipe and the back-blowing air outlet pipe are connected to the dryer.

[0013] On the basis of the above scheme, the working air cylinder and the back-blowing air cylinder are an integrated combined air cylinder.

[0014] On the basis of the above scheme, a mounting plate for mounting a power connector and an air outlet is provided on one side of the lower part of the frame close to the auxiliary air supply system. There are several air outlets, and an air outlet seat is fixed on the mounting plate.

[0015] On the basis of the above solution, the air outlet seat comprises a fixing plate for fixing the air outlet seat on the mounting plate and a connecting pipe for ventilation; the fixing plate is provided with a fixing hole.

[0016] On the basis of the above solution, the fixing plate forms a limiting block on a side away from the connecting pipe, and the circumferential surface of the limiting block is a non-cylindrical surface.

[0017] Based on the above solution, the fixing plate, the connecting pipe and the limiting block are an integrated structure.

[0018] The utility model integrates a new auxiliary air supply unit for EMUs, sets the back-blowing solenoid valve and the air cylinder drain plug on the air path plate, and forms a sealing protection for the two through the box body, the box door, and the sealing strip between the box door and the box body, effectively solving the protection problem of the back-blowing solenoid valve and the air cylinder drain plug, avoiding the back-blowing solenoid valve and the air cylinder drain plug from being damaged by bumps due to operating environment problems, and preventing the solenoid valve from being burned or malfunctioning due to rain, snow and water vapor. The air outlet seat used in the frame of the utility model uses a special fixing structure, which enhances the strength and installation firmness of the air outlet, and there will be no rotation problem during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the integrated main view structure of the auxiliary air supply unit of the utility model (excluding the cabinet door);

[0020] Figure 2 It is a schematic diagram of the rear view structure of the auxiliary air supply unit integrated in the utility model;

[0021] Figure 3 It is a schematic diagram of the integrated three-dimensional structure of the auxiliary air supply unit of the utility model;

[0022] Figure 4 This is a structural schematic diagram of the mounting plate in the integrated auxiliary air supply unit of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the air outlet seat in the integrated mounting plate of the auxiliary air supply unit of the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be pointed out that the embodiments described below are intended to facilitate the understanding of the present invention and do not have any limiting effect on the present invention.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a new auxiliary air supply unit integration for EMU, including an electrical control system 1, an auxiliary air supply system 2, and a frame 3 for installing the electrical control system 1 and the auxiliary air supply system 2;

[0026] The electrical control system 1 includes an air circuit board 1-1 and a working air cylinder 1-2;

[0027] The auxiliary air supply system 2 includes a back-blowing solenoid valve 2-1, an air cylinder drain plug 2-2, a back-blowing air cylinder 2-3, a dryer 2-4 and an air compressor 2-5;

[0028] The blowback solenoid valve 2-1 is arranged on the gas circuit board 1-1 of the electrical control system 1; a transition block 2-11 is arranged between the blowback solenoid valve 2-1 and the gas circuit board 1-1;

[0029] The air cylinder drain plug door 2 - 2 is arranged at the lower part of the air circuit board 1 - 1 of the electrical control system 1 .

[0030] As a specific implementation scheme, the air inlet of the air cylinder drain plug 2-2 is connected to one end of a drain pipe 1-21 arranged opposite to the air path plate 1-1; the other end of the drain pipe 1-21 is connected to the bottom of the working air cylinder 1-2.

[0031] The air outlet of the air cylinder drain plug door 2-2 is connected to the drain outlet at the bottom of the air circuit board 1-1 through the air passage inside the air circuit board 1-1.

[0032] The air cylinder drain plug door in the prior art is a pipe-type installation, which is connected in series in the drainage pipeline system at the bottom of the working air cylinder. The air cylinder drain plug door 2-2 in the utility model uses a plate-type two-way valve structure and is installed at the lower right corner of the air circuit board 1-1. The drain port at the bottom of the working air cylinder 2-3 is connected to the back of the air circuit board 1-1 through a drain pipe 2-31 ( Figure 2The air inlet of the air cylinder drain plug door 2-1 (i.e., plate-type two-way valve) is connected through the air passage inside the air circuit board 1-1, and the air outlet of the air cylinder drain plug door 2-2 is connected to the drain port at the bottom of the air circuit board 1-1 through the internal air passage of the air circuit board 1-1. When the air cylinder drain plug door 2-2 is opened, the air inlet and outlet of the air cylinder drain plug door 2-2 are connected, and the condensed water and compressed air in the working air cylinder 2-3 are discharged through the bottom drain port of the air circuit board 1-1. The air circuit board 1-1 and its internal channel structure belong to conventional technical means of those skilled in the art, and will not be described in detail here.

[0033] As a specific implementation scheme, the air inlet of the back-blowing solenoid valve 2-1 is connected to the back-blowing air inlet pipe 2-31 arranged on the other side of the air circuit plate 1-1 through the air channel inside the air circuit plate 1-1; the air outlet of the back-blowing solenoid valve 2-1 is connected to the back-blowing air outlet pipe 2-32 arranged on the other side of the air circuit plate 1-1 through the air channel inside the air circuit plate 1-1; the back-blowing air inlet pipe 2-31 and the back-blowing air outlet pipe 2-32 are connected to the dryer (2-4).

[0034] In the prior art, the back-blowing solenoid valve is installed in a tubular manner and connected in series in the back-blowing pipeline system. The back-blowing solenoid valve 2-1 of the utility model removes the transition block on the basis of the original back-blowing solenoid valve, and is installed on the gas circuit board 1-1 with a plate structure. For the convenience of assembly and disassembly, a transition block 2-11 is added at the bottom of the back-blowing solenoid valve 2-1, and the transition block 2-11 is installed in a plate-type on the gas circuit board 1-1. When the compressor is working normally, the back-blowing solenoid valve 2-1 is installed in a closed box through a box body-box body door-sealing strip structure to achieve complete sealing protection. The pipeline connected in series with the back-blowing solenoid valve 2-1 enters the internal air passage of the gas circuit board through the back side of the gas circuit board, and then enters the air inlet of the back-blowing solenoid valve 2-1 through the transition block, and then enters the transition block 2-11 through the air outlet, and is connected to the back-blowing port of the dryer 2-4 through the air passage of the gas circuit board 1-1 from the gas circuit interface on the back side of the gas circuit board 1-1 through a pipeline, so as to supply air to the back-blowing port of the dryer 2-4.

[0035] The electrical control system 1 is an electrical control and detection device integrated with the auxiliary air supply unit. Its main function is to effectively match the high-voltage equipment control and electrical logic control of the whole vehicle, so as to realize the requirements of "ground protection input and removal control, high-voltage equipment interlocking control, and pantograph and VCB action air source supply control" of the EMU. In addition to the air circuit board 1-1, the electrical control system 1 also includes air circuit device box, pressure regulator, solenoid valve, push button switch, plate-type two-way valve, plate-type three-way valve, pressure gauge, working air cylinder, power connector and other components. These components and installation positions are all conventional technical means of those skilled in the art and will not be repeated here.

[0036] The auxiliary air supply system 2 is a compressor air generation and processing device, designed according to the principle of the unified air circuit of China's standardized EMU, and its main function is to provide dry and clean compressed air. The auxiliary air supply system 2 is mainly composed of three parts: an air compressor, a back-blowing air cylinder 2-3 and a pipeline. In addition to the back-blowing solenoid valve 2-1 and the air cylinder drain plug 2-2, the auxiliary air supply system 2 also includes an air compressor 2-5, a back-blowing air cylinder 2-3, a hose, a radiator, a safety valve, a dryer 2-4 and other components. These components and installation positions are all conventional technical means of those skilled in the art, and will not be repeated here.

[0037] In the auxiliary air supply unit integration of the prior art, the working air cylinder 1-2 and the back-blowing air cylinder 2-3 adopt a split structure. The working air cylinder 1-2 is usually fixed on one side of the air circuit board of the electrical control system, and the back-blowing air cylinder 2-3 is usually fixed on one side of the air compressor. In order to improve the intensive degree of the auxiliary air supply unit integration, Figure 3 As shown, the working air cylinder 1-2 and the back-blowing air cylinder 2-3 in the utility model are an integrated combined air cylinder. In the combined air cylinder, the inner cavities of the working air cylinder 1-2 and the back-blowing air cylinder 2-3 are 29L and 3L respectively.

[0038] like Figure 3 and Figure 4 As shown, a mounting plate 4 for mounting a power connector and an air outlet is provided on one side of the lower part of the frame 3 near the auxiliary air supply system 2. There are several air outlets, and an air outlet seat 4-1 is fixed on the mounting plate 4. Figure 3 and 4 are no longer shown in Figure 4 The bold dashed line in the figure is where the power connector is installed.

[0039] As a specific implementation scheme, Figure 5 As shown, the air outlet seat 4-1 includes a fixing plate 4-11 for fixing the air outlet seat 4-1 on the mounting plate 4 and a connecting pipe 4-12 for ventilation; a fixing hole 4-111 is provided on the fixing plate 4-11.

[0040] When fixing, bolts are used to pass through the fixing holes 4-111 to fix the fixing plate 4-11 to the mounting plate 4. Although this method can achieve relative fixation between the air outlet seat 4-1 and the mounting plate 4, the fixing strength is not large. Moreover, since the frame 3 is made of aluminum alloy as a whole, it is necessary to further strengthen the firmness between the air outlet seat 4-1 and the mounting plate 4. For this reason, based on the above technical solution, the fixing plate 4-11 forms a limiting block 4-13 on the side away from the connecting pipe 4-12. The circumferential surface 4-131 of the limiting block 4-13 is a non-cylindrical surface. The mounting plate 4 is provided with a through hole 4-2 (the through hole 4-2 is used to install the air outlet) that matches the circumferential surface 4-131 of the limiting block 4-13. There are many shapes of the non-cylindrical circumferential surface 4-131, such as Figure 5 The cross-section in the structure is similar to an elliptical structure, or it can be a structure with a triangular, square or rectangular cross-section, which will not be described in detail here.

[0041] During installation, the limit block 4-13 is embedded in the through hole 4-2 of the mounting plate 4. Since the through hole 4-2 is matched with the circumferential surface 4-131 of the limit block 4-13, the rotation of the air outlet seat 4-1 relative to the mounting plate 4 can be limited. Afterwards, the fixing plate 4-11 is fixed to the mounting plate 4 with bolts passing through the fixing holes 4-111, thereby achieving the connection stability and firmness between the air outlet seat 4-1 and the mounting plate 4.

[0042] The fixing plate 4-11, the connecting pipe 4-12 and the limiting block 4-13 are an integrated structure, and the material can be made of high-strength carbon steel.

[0043] There are several air outlet seats 4-1 on the mounting plate 4. Figure 4 Four are shown, namely the MR port, the ground protection break port, the ground protection closing port and the VCB port.

[0044] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A new auxiliary air supply unit integration for a motor vehicle multiple unit, comprising an electrical control system (1), an auxiliary air supply system (2), and a frame (3) for mounting the electrical control system (1) and the auxiliary air supply system (2); The electrical control system (1) comprises an air circuit board (1-1) and a working air cylinder (1-2); The auxiliary air supply system (2) comprises a back-blowing solenoid valve (2-1), an air cylinder drain plug (2-2), a back-blowing air cylinder (2-3), a dryer (2-4) and an air compressor (2-5); It is characterized in that The back-blowing solenoid valve (2-1) is arranged on the gas circuit board (1-1) of the electrical control system (1); a transition block (2-11) is arranged between the back-blowing solenoid valve (2-1) and the gas circuit board (1-1); The air cylinder drain plug door (2-2) is arranged at the lower part of the air circuit plate (1-1) of the electrical control system (1).

2. The new auxiliary air supply unit integration for EMU according to claim 1 is characterized in that: The air inlet of the air cylinder drain plug (2-2) is connected to one end of a drain pipe (1-21) arranged on the other side of the air path plate (1-1); the other end of the drain pipe (1-21) is connected to the bottom of the working air cylinder (1-2).

3. The new auxiliary air supply unit integration for EMU according to claim 2 is characterized in that: The air outlet of the air cylinder drain plug door (2-2) is connected to the drain outlet at the bottom of the air circuit board (1-1) through the air passage inside the air circuit board (1-1).

4. The new auxiliary air supply unit integration for EMU according to claim 1 is characterized in that: The air inlet of the back-blowing solenoid valve (2-1) is connected to a back-blowing air inlet pipe (2-31) arranged on the other side of the air path plate (1-1) through an air passage inside the air path plate (1-1).

5. The new auxiliary air supply unit integration for EMU according to claim 4 is characterized in that: The air outlet of the back-blowing solenoid valve (2-1) is connected to a back-blowing air outlet pipe (2-32) arranged on the other side of the air path plate (1-1) through an air passage inside the air path plate (1-1); the back-blowing air inlet pipe (2-31) and the back-blowing air outlet pipe (2-32) are connected to the dryer (2-4).

6. The new auxiliary air supply unit integration for EMU according to claim 1 is characterized in that: The working air cylinder (1-2) and the back-blowing air cylinder (2-3) are integrated combined air cylinders.

7. The new auxiliary air supply unit integration for EMU according to claim 1 is characterized in that: A mounting plate (4) for mounting a power connector and an air outlet is provided on one side of the lower part of the frame (3) close to the auxiliary air supply system (2), and an air outlet seat (4-1) is fixed on the mounting plate (4).

8. The new auxiliary air supply unit integration for EMU according to claim 7 is characterized in that: The air outlet seat (4-1) comprises a fixing plate (4-11) for fixing the air outlet seat (4-1) on the mounting plate (4) and a connecting pipe (4-12) for ventilation; the fixing plate (4-11) is provided with a fixing hole (4-111).

9. The new auxiliary air supply unit integration for EMU according to claim 8 is characterized in that: The fixing plate (4-11) forms a limiting block (4-13) on a side away from the connecting pipe (4-12), and a circumferential surface (4-131) of the limiting block (4-13) is a non-cylindrical surface.

10. The new auxiliary air supply unit integration for EMU according to claim 9 is characterized in that: The fixing plate (4-11), the connecting pipe (4-12) and the limiting block (4-13) are an integrated structure.

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