A water supply system for a railway passenger car

Abstract

The application discloses a water feeding system for railway passenger cars, which comprises multiple water feeding branches, a water collecting tank, a water feeding control device and a stop valve. Each water feeding branch comprises a water feeding connector, a water feeding hose, a ground water supply pipe, a three-way valve and a ground water return pipe. The water inlet end of the three-way valve is connected with a main water supply pipe through the ground water supply pipe. The water outlet end of the three-way valve is connected with the water feeding connector through the water feeding hose. The water return end of the three-way valve is connected with the water collecting tank through the ground water return pipe. The water collecting tank is connected with a water return discharge pipe. The stop valve is installed on the water return discharge pipe. The water feeding control device is electrically connected with a valve core rotating driving device of the three-way valve. The water feeding system can realize synchronous opening and closing switching of the ground water supply pipe and the ground water return pipe, ensures that the residual water in the pipeline can be rapidly discharged in a short time after the water feeding of the passenger car is completed, and provides conditions for improving the water feeding operation condition in winter and saving water.

Description

Technical Field

[0001] This invention relates to the field of water supply equipment for railway passenger cars, and more specifically to a water supply system for railway passenger cars. Background Technology

[0002] The traditional method for watering railway passenger cars at depots, originating stations, and stopping stations involves manually inserting a water hose from a ground-level hydrant well into the passenger car's water inlet. This connects the ground-level water supply pipe to the railway passenger car's water tank, which is controlled by a water supply gate valve. During water supply, the hose is manually inserted into the passenger car's water inlet, and the water supply gate valve is opened to replenish the water tank. After water supply is complete, the water supply gate valve is closed, and the hose is manually removed, completing the water supply operation for the railway passenger car.

[0003] After water supply is completed and the water supply gate valve is closed, a large amount of residual water remains between the water supply gate valve and the passenger car's water injection pipe. If the water supply hose is disconnected at this point, the residual water will splash and be discharged onto the roadbed. This situation not only wastes water resources but also makes the water supply operation environment extremely harsh in winter. In winter, the water leaking onto the roadbed can freeze, posing a safety hazard to train operation. With the rapid development of railway construction and the comprehensive improvement of railway technology and equipment in my country, a reasonable solution for the surface hydrant well water supply system has become urgent. Therefore, designing a railway passenger car water supply system with a simple structure that is easy to upgrade from traditional water supply stations is particularly important. Summary of the Invention

[0004] The purpose of this invention is to provide a water supply system for railway passenger cars, so as to solve the problems of water waste in traditional railway passenger car water supply systems and high construction and maintenance costs of new generation railway passenger car water supply systems.

[0005] To achieve the above objectives, the present invention provides a water supply system for railway passenger cars, comprising multiple water supply branches, a return water collection tank, a water supply control device, and a shut-off valve. Each water supply branch includes a water supply connector, a water supply hose, a ground water supply pipe, a three-way valve, and a ground return water pipe. The three-way valve is an electric three-way valve. The inlet of the three-way valve is connected to the main water supply pipe through the ground water supply pipe, and the outlet of the three-way valve is connected to the water supply connector through the water supply hose. The water supply connector is used for detachable connection to the passenger car's water injection pipe. The return water end of the three-way valve is connected to the return water collection tank through the ground return water pipe. The discharge port of the return water collection tank is connected to a return water discharge pipe. The shut-off valve is installed on the return water discharge pipe. The water supply control device is electrically connected to the valve core rotation drive device of the three-way valve, and is used to control the three-way valve to connect the water supply hose to the ground water supply pipe, or to control the three-way valve to connect the water supply hose to the ground return water pipe.

[0006] Furthermore, the water supply system also includes a water pump and a check valve. The inlet of the water pump is connected to the return water discharge pipe before the shut-off valve, and the outlet of the water pump is connected to the main water supply pipe through the check valve. A liquid level monitoring device is installed in the return water collection tank, and the water supply control device is electrically connected to the liquid level monitoring device and the water pump respectively. In this structure, the ground water supply pipe and ground return water pipe of each water supply branch are connected to the main water supply pipe and the return water collection tank respectively, and the return water collection tank is connected to the return water discharge pipe. When the shut-off valve is closed, if the water level in the return water collection tank reaches a certain height, the water pump can be turned on to inject the water in the return water collection tank into the main water supply pipe.

[0007] Furthermore, the water inlet connector includes claws, a guide tube, a sliding sleeve, a tensioning mechanism, and a connecting tube. One end of the connecting tube is connected to the water inlet hose, and the other end of the connecting tube is connected to one end of the guide tube. The tensioning mechanism includes an upper threaded sleeve, a connecting sleeve, a lower threaded sleeve, and an electromagnet. The upper threaded sleeve and the lower threaded sleeve are axially movably fitted onto the guide tube. The connecting sleeve is threadedly connected to the upper threaded sleeve and the lower threaded sleeve. The electromagnet is fixedly mounted on the connecting tube. The upper part of the upper threaded sleeve is circumferentially hinged with multiple claws. The sliding sleeve is fitted on the outside of the multiple claws. The sliding sleeve can slide along the axial direction of the guide tube and control the claws to close or open. The outer circumferential surface of the guide tube is provided with a limiting block for limiting its range of movement. The end of the guide tube used to connect with the bus water inlet pipe is provided with a guide connector.

[0008] Furthermore, a wedge-shaped block is provided inside the sliding sleeve corresponding to each of the claws, and the side of each wedge-shaped block facing the claw is inclined from top to bottom from the outside to the inside.

[0009] Furthermore, each of the wedge blocks is provided with a mounting groove on the side where it connects to the sliding sleeve, and the inner side of the sliding sleeve is provided with a plurality of mounting bosses that correspond one-to-one with the plurality of mounting grooves.

[0010] Furthermore, the lower part of the guide joint is sleeved on the upper outer side of the guide tube, and the upper inner side of the guide joint is provided with a guide hole that is wider at the top and narrower at the bottom. The diameter of the lower end of the guide hole is larger than the outer diameter of the guide tube. The upper inner side of the guide joint and the lower end of the guide hole are also provided with an annular mounting groove. A sealing gasket is provided on the end face of the guide tube that is used to connect with the bus water injection pipe, and the outer periphery of the sealing gasket is inserted into the annular mounting groove.

[0011] Furthermore, a protective plate is provided at the lower end of the lower threaded sleeve, and an annular mounting cavity is formed between the protective plate and the guide tube. The upper ends of the electromagnet and the connecting tube are disposed in the annular mounting cavity.

[0012] The present invention also provides another water supply system for railway passenger cars, including multiple water supply branches. Each water supply branch includes a water supply connector, a water supply hose, a ground water supply pipe, a three-way valve, and a ground return water pipe. The three-way valve is a manual three-way valve. The inlet end of the three-way valve is connected to the main water supply pipe through the ground water supply pipe. The outlet end of the three-way valve is connected to the water supply connector through the water supply hose. The water supply connector is used for detachable connection with the passenger car water injection pipe. The return end of the three-way valve is connected to one end of the ground return water pipe. The other end of all the ground return water pipes is connected to the return water discharge pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The water supply system for railway passenger cars of the present invention uses an electric three-way valve or a manual three-way valve. By rotating the valve core of the three-way valve 90° forward and reverse, the different connections between the ground water supply hose and the ground water supply pipe and the ground water return pipe can be controlled. This enables the synchronous opening and closing of the ground water supply pipe and the ground water return pipe, ensuring that the water remaining in the pipeline after the passenger car is watered can be discharged quickly in a short time. This provides conditions for improving the water supply operation conditions in winter and saving water.

[0015] (2) The water supply system of the present invention is quickly connected to the main water pipe of the passenger car through a water supply connector. The water supply connector includes a claw, a guide tube, a sliding sleeve, a tensioning mechanism and a connecting tube. The tensioning mechanism includes an upper threaded sleeve, a connecting sleeve, a lower threaded sleeve and an electromagnet. After the electromagnet is energized, it is attracted together with the lower threaded sleeve. Taking advantage of the structural characteristics of the boss along the water inlet of the railway passenger car, the sliding sleeve controls the claw to clamp and open along the boss of the water inlet of the railway passenger car. The quick connection and disassembly of the water supply connector and the water inlet of the railway passenger car are controlled by rotating the connecting sleeve and the electromagnet. When the electromagnet is not powered, the connection and disassembly of the quick water supply connector and the water inlet of the railway passenger car can also be completed by manual operation. The present invention achieves the technical effects of easy operation, easy control, reliable sealing and simple structure of the connection between the water supply connector and the water inlet of the railway passenger car.

[0016] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a water supply system for railway passenger cars in the water supply state according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a water supply system for railway passenger cars in the return water state according to the present invention;

[0020] Figure 3 This is a schematic diagram of another water supply system for railway passenger cars in the water supply state according to the present invention;

[0021] Figure 4 This is a schematic diagram of the water inlet connector in the present invention with the claws in the closed state;

[0022] Figure 5 This is a schematic diagram of the open state of the water inlet connector in this invention;

[0023] Among them, 1-passenger car water injection pipe, 2-water supply connector, 2.1-claw, 2.2-guide pipe, 2.2a-limiting block, 2.3-sliding sleeve, 2.4-connecting pin, 2.5-upper threaded sleeve, 2.6-connecting sleeve, 2.7-lower threaded sleeve, 2.7a-protective plate, 2.8-electromagnet, 2.9-connecting pipe, 2.10-guide connector, 2.11-wedge block, 2.12-sealing gasket, 3-water supply hose, 4-ground water supply pipe, 5-three-way valve, 6-valve core rotation drive device, 7-ground return water pipe, 8-return water collection tank, 9-liquid level monitoring device, 10-water supply control device, 11-stop valve, 12-water pump, 13-check valve, 14-main water supply pipe, 15-return water discharge pipe. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] Example 1

[0026] Please see Figure 1 and Figure 2 This embodiment of a water supply system for railway passenger cars includes multiple water supply branches, a return water collection tank 8, a water supply control device 10, a shut-off valve 11, and a water pump 12, with the following specific structure:

[0027] Each water supply branch includes a water supply connector 2, a water supply hose 3, a ground water supply pipe 4, a three-way valve 5, and a ground return water pipe 7. The three-way valve is an electric three-way valve. The inlet end of the three-way valve 5 is connected to the main water supply pipe 14 through the ground water supply pipe 4. The outlet end of the three-way valve 5 is connected to the water supply connector 2 through the water supply hose 3. The water supply connector 2 is used for quick connection to the bus water injection pipe 1. The return end of the three-way valve 5 is connected to the return water collection tank 8 through the ground return water pipe 7. The return water collection tank 8 is equipped with a liquid level monitoring device 9. The discharge port of the return water collection tank 8 is connected to the return water discharge pipe 15. The shut-off valve 11 is installed on the return water discharge pipe 15. The inlet of the water pump 12 is connected to the return water discharge pipe 15 before the shut-off valve 11. The outlet of the water pump 12 is connected to the main water supply pipe 14 through a one-way valve 13. The water supply control device 10 is electrically connected to the valve core rotation drive device 6, the liquid level monitoring device 9, and the water pump 12 of the three-way valve 5, respectively, to control the three-way valve to connect the water supply hose 3 to the ground water supply pipe 4, or to control the three-way valve to connect the water supply hose 3 to the ground return water pipe 7. Figure 1 As shown, during water supply, the water supply connector 2 is connected to the bus water injection pipe 1. The water supply control device 10 remotely controls the start of the valve core rotation drive device 6 to rotate the valve core of the three-way valve 5 in the forward direction, so that the water supply hose 3 is connected to the ground water supply pipe 4, and the ground return water pipe 7 is in the closed state. Figure 2 As shown, after water filling is completed, the water filling control device 10 remotely controls the valve core rotation drive device 6 to rotate the three-way valve 5 in the reverse direction, connecting the water filling hose 3 to the ground return water pipe 7, while the ground water supply pipe remains closed. Residual water in the water filling hose flows into the return water collection tank 8 through the ground return water pipe 7. The water filling connector 2 is then disconnected, ending the water filling operation. When the liquid level monitoring device 9 detects that the liquid level in the return water collection tank has reached the set height, the water filling control device 10 starts the water pump 12 to inject water from the return water collection tank 8 into the ground water supply pipe 4. During water filling system operation, the shut-off valve 11 remains closed.

[0028] See also Figure 4 and Figure 5In this embodiment, the water inlet connector includes a claw 2.1, a guide tube 2.2, a sliding sleeve 2.3, a tensioning mechanism, and a connecting tube 2.9. One end of the connecting tube 2.9 is connected to the water inlet hose 3, and the other end of the connecting tube 2.9 is connected to one end of the guide tube 2.2. The tensioning mechanism includes an upper threaded sleeve 2.5, a connecting sleeve 2.6, a lower threaded sleeve 2.7, and an electromagnet 2.8. The upper threaded sleeve 2.5 and the lower threaded sleeve 2.7 are axially movably fitted onto the guide tube 2.2. The inner wall of the guide tube 2.2 has a circular cross-section, and the outer wall has a polygonal cross-section. The connecting sleeve 2.6 is threadedly connected to the upper threaded sleeve 2.5 and the lower threaded sleeve 2.7. The electromagnet 2.8 is fixedly mounted on the connecting tube 2.9. The upper part of the upper threaded sleeve 6 is circumferentially hinged with multiple claws 2.1 by a connecting pin 2.4. The sliding sleeve 2.3 is fitted onto the outside of the multiple claws. The sliding sleeve can slide along the axial direction of the guide tube 2.2 and control the claws 2.1 to close or open. The outer circumferential surface of the guide tube 2.2 is provided with a limiting block 2.2a to restrict its range of movement, and the end of the guide tube 2.2 that is used to connect with the bus water injection pipe 1 is provided with a guide joint 2.10. When the water inlet connector needs to be connected to the bus water inlet pipe 1, firstly, the electromagnet 2.8 is energized, and after being energized, the electromagnet 2.8 is attracted together with the lower threaded sleeve 2.7; then, the sliding sleeve 2.3 is moved so that at least two claws are in the open state, and the guide tube 2.2 is aligned with the water inlet of the bus water inlet pipe 1; then, the sliding sleeve 2.3 is pushed and it is tightened to clamp multiple claws, and the multiple claws close up above the boss along the inlet of the bus water inlet pipe 1, and hold the bus water inlet pipe 1 tightly; then, the connecting sleeve 2.6 is rotated forward so that the upper threaded sleeve 2.5 and the lower threaded sleeve 2.7 move towards each other. The lower threaded sleeve 2.7 drives the guide tube to move upward through the electromagnet 2.8, and the upper threaded sleeve 2.5 drives the claw 2.1 to move downward. With the thrust action of the boss along the inlet of the bus water inlet pipe 1 on the claw 2.1, the water inlet connector is tightly connected to the bus water inlet pipe 1.

[0029] In this embodiment, a wedge-shaped block 2.11 is provided inside the sliding sleeve 2.3, corresponding to each claw 2.1. The side of each wedge-shaped block facing the claw 2.1 is inclined from top to bottom and from the outside to the inside. Each wedge-shaped block has a mounting groove on the side connected to the sliding sleeve, and the inner side of the sliding sleeve 2.3 has multiple mounting bosses corresponding to the mounting grooves. This structure facilitates the sliding sleeve's control over the state of the claws.

[0030] In this embodiment, the lower part of the guide connector 2.10 is sleeved on the upper outer side of the guide tube. The upper inner side of the guide connector 2.10 is provided with a guide hole that is wider at the top and narrower at the bottom. The diameter of the lower end of the guide hole is larger than the outer diameter of the guide tube. An annular mounting groove is also provided on the upper inner side of the guide connector 2.10 at the lower end of the guide hole. A sealing gasket 2.12 is provided on the end face of the guide tube 2.2 that is used to connect with the passenger car water injection pipe 1. The outer periphery of the sealing gasket is inserted into the annular mounting groove. This structure can not only fix the sealing gasket well, but also achieve a tight connection between the water inlet connector and the railway passenger car water injection pipe. The structure is reasonable. The lower end of the lower threaded sleeve 2.7 is also provided with a protective plate 2.7a. An annular mounting cavity a is formed between the protective plate and the guide tube 2.2. The upper ends of the electromagnet 2.8 and the connecting pipe are placed in the annular mounting cavity a. This structure can protect the electromagnet and the connecting pipe, and also make the structure of the water inlet connector aesthetically pleasing.

[0031] In this embodiment, when the water inlet connector needs to be connected to the railway passenger car water injection pipe, the electromagnet is first energized, and after being energized, it attracts the lower threaded sleeve. Then, the sliding sleeve is moved to open the three claws, and the guide tube is aligned with the water inlet of the railway passenger car water injection pipe. Then, the sliding sleeve is pushed towards the side of the railway passenger car water injection pipe inlet, so that the sliding sleeve tightly clamps the three claws. The three claws close up above the boss along the railway passenger car water injection pipe inlet and hold the railway passenger car water injection pipe inlet tightly. Then, the connecting sleeve is rotated forward, so that the upper threaded sleeve and the lower threaded sleeve move towards each other. The lower threaded sleeve drives the guide tube to move upward through the electromagnet, and the upper threaded sleeve drives the claws to move downward. With the thrust action of the boss along the railway passenger car water injection pipe inlet on the claws, the water inlet connector is tightly connected to the railway passenger car water injection pipe inlet.

[0032] After the water filling operation is completed, the electromagnet is de-energized and loses its magnetic force, causing it to disengage from the lower threaded sleeve and releasing the tension of the tightening mechanism. The guide tube, its fixed connecting pipe, the electromagnet, and the water filling hose then detach from the railway passenger car's water inlet under their own weight. During the guide tube's detachment, the sliding sleeve moves towards the upper threaded sleeve, releasing the sliding sleeve from the clamp, causing the clamp to open and the water filling connector to detach from the railway passenger car's water inlet. When the electromagnet cannot engage due to lack of power, rotating the connecting sleeve moves the lower threaded sleeve, the integrated guide tube, and the connecting pipe, enabling manual connection and disconnection of the water filling connector from the passenger car's water inlet.

[0033] Example 2

[0034] See also Figure 3This embodiment provides another water supply system for railway passenger cars, including at least one water supply branch. Each water supply branch includes a water supply connector 2, a water supply hose 3, a ground water supply pipe 4, a three-way valve 5, and a ground return water pipe 7. The three-way valve is a manual three-way valve. The inlet end of the three-way valve 5 is connected to the main water supply pipe 14 through the ground water supply pipe 4, and the outlet end of the three-way valve 5 is connected to the water supply connector 2 through the water supply hose 3. The water supply connector 2 is used for detachable connection to the passenger car water injection pipe 1. The return end of the three-way valve 5 is connected to one end of the ground return water pipe 7, and the other end of all ground return water pipes 7 is connected to the return water discharge pipe 15. The structure of the water supply connector 2 in this embodiment is the same as that in Embodiment 1, and will not be described in detail here.

[0035] In the water supply system of this invention, multiple water supply hoses are connected to the ground water supply pipe and the ground return water pipe respectively through three-way valves. The three-way valves control the opening and closing of the water supply hoses, the ground water supply pipes, and the ground return water pipes. The water supply hoses can be quickly connected and disconnected from the bus water injection pipes through water supply connectors. The ground water supply pipes are connected to the main water supply pipes, and the ground return water pipes collect and discharge residual water in the water supply hoses. The three-way valve core can be electrically driven or manually rotated. In Embodiment 1 of this invention, when the three-way valve core is electrically driven, the water supply control device can control the three-way valve core rotation drive device to open and close the three-way valve and start the water pump according to the water supply and return water demand of the water supply hoses and the liquid level in the return water collection tank, and can realize remote control of the water supply process. When the three-way valve core is manually rotated, all ground return water pipes discharge water to a designated location through the return water discharge pipe.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water supply system for a railway passenger car, characterized by, The utility water supply system comprises a plurality of utility water branch lines, a water return collecting tank (8), a utility water control device (10) and a stop valve (11), each of the utility water branch lines comprises a utility water connector (2), a utility water hose (3), a ground water supply pipe (4), a three-way valve (5) and a ground water return pipe (7), the three-way valve (5) is an electric three-way valve, the water inlet end of the three-way valve (5) is connected with a main water supply pipe (14) through the ground water supply pipe (4), the water outlet end of the three-way valve (5) is connected with the utility water connector (2) through the utility water hose (3), the utility water connector (2) is used for connecting with a train water filling pipe (1), the water return end of the three-way valve (5) is connected with the water return collecting tank (8) through the ground water return pipe (7), the water return collecting tank (8) is connected with a water return discharge pipe (15) at a discharge port, the stop valve (11) is installed on the water return discharge pipe (15), the utility water control device (10) is electrically connected with a valve core rotating driving device (6) of the three-way valve (5) and is used for controlling the three-way valve (5) to communicate the utility water hose (3) with the ground water supply pipe (4) or to control the three-way valve (5) to communicate the utility water hose (3) with the ground water return pipe (7), the utility water connector (2) comprises a claw (2.1), a guide pipe (2.2), a sliding sleeve (2.3), a tensioning mechanism and a connecting pipe (2.9), one end of the connecting pipe (2.9) is connected with the utility water hose (3), the other end of the connecting pipe (2.9) is connected with one end of the guide pipe (2.2), the tensioning mechanism comprises an upper threaded sleeve (2.5), a connecting sleeve (2.6), a lower threaded sleeve (2.7) and an electromagnet (2.8), the upper threaded sleeve (2.5) and the lower threaded sleeve (2.7) are movably sleeved on the guide pipe (2.2) in the axial direction, the connecting sleeve (2.6) is threadedly connected with the upper threaded sleeve (2.5) and the lower threaded sleeve (2.7), and the electromagnet (2.8) is fixedly arranged on the connecting pipe (2.9), the upper part of the upper threaded sleeve (2.5) is circumferentially hinged with a plurality of claws (2.1), the sliding sleeve (2.3) is sleeved on the outer side of the plurality of claws (2.1), the sliding sleeve (2.3) can slide along the axial direction of the guide pipe (2.2) and control the claws (2.1) to close or open, a limiting block (2.2a) for limiting the movement range of the guide pipe (2.2) is arranged on the outer periphery of the guide pipe (2.2), and the guide pipe (2.2) is provided with a guide connector (2.10) at the end for butt joint with the train water filling pipe (1). When the water inlet connector (2) needs to be connected with the water injection pipe (1) of the passenger train, the electromagnet (2.8) is powered first, and the electromagnet (2.8) is attracted to the lower threaded sleeve (2.7) after being powered; then the slide sleeve (2.3) is moved to make the plurality of clamping claws (2.1) in an open state, and the guide pipe (2.2) is aligned with the water injection port of the water injection pipe (1) of the passenger train; then the slide sleeve (2.3) is pushed and tightly clamped around the plurality of clamping claws, and the plurality of clamping claws are folded above the flange of the water injection pipe (1) of the passenger train and tightly hold the water injection pipe (1) of the passenger train; then the connecting sleeve (2.6) is rotated in the forward direction, the upper threaded sleeve (2.5) and the lower threaded sleeve (2.7) are moved towards each other, the lower threaded sleeve (2.7) is driven by the electromagnet (2.8) to move the guide pipe upwards, the upper threaded sleeve (2.5) drives the clamping claw (2.1) to move downwards, and the thrust of the flange of the water injection pipe (1) port on the clamping claw (2.1) makes the water inlet connector (2) tightly connected with the water injection pipe (1) of the passenger train; After the water inlet operation is completed, the electromagnet (2.8) loses power and loses magnetic force, the electromagnet (2.8) is separated from the attraction of the lower threaded sleeve (2.7), and the tension of the tensioning mechanism is released; the guide pipe (2.2) and the connecting pipe (2.9), the electromagnet (2.8), and the water inlet hose (3) fixed together are separated from the water injection pipe (1) of the passenger train under the action of gravity; the guide pipe (2.2) drives the slide sleeve (2.3) to move to one side of the upper threaded sleeve (2.5) during the falling process, releases the restraint of the slide sleeve on the clamping claw, opens the clamping claw, and the water inlet connector is separated from the water injection pipe (1) of the passenger train.

2. The upwater system of claim 1, wherein, The water inlet system further comprises a water pump (12) and a one-way valve (13), the water inlet of the water pump (12) is connected with the backwater discharge pipe (15) before the stop valve (11), the water outlet of the water pump (12) is connected with the main water supply pipe (14) through the one-way valve (13); the liquid level monitoring device (9) is arranged in the backwater collecting box (8), and the water inlet control device (10) is electrically connected with the liquid level monitoring device (9) and the water pump (12).

3. The upwater system of claim 1, wherein, A wedge-shaped block (2.11) is arranged in the slide sleeve (2.3) and corresponds to each clamping claw (2.1), and the side of each wedge-shaped block (2.11) facing the clamping claw (2.1) is arranged from top to bottom and from outside to inside.

4. The upwater system of claim 3, wherein, The side of each wedge-shaped block (2.11) connected with the slide sleeve (2.3) is provided with a mounting groove, and the inner side of the slide sleeve (2.3) is provided with a plurality of mounting bosses corresponding to the plurality of mounting grooves.

5. The upper water system head of claim 1, wherein, The lower part of the guide joint (2.10) is sleeved on the upper outer side of the guide pipe (2.2), the upper inner side of the guide joint (2.10) is provided with a guide hole which is wide at the upper part and narrow at the lower part, the hole diameter of the lower end of the guide hole is larger than the outer diameter of the guide pipe (2.2), and the upper inner side of the guide joint (2.10) and the lower end of the guide hole are further provided with an annular mounting groove; the guide pipe (2.2) is used for being connected with the end face of one end of the passenger train water injection pipe (1), and the outer peripheral side of the sealing gasket (2.12) is inserted into the annular mounting groove.

6. The upwater system of claim 1, wherein, The lower end of the lower threaded sleeve (2.7) is further provided with a protective plate, and the annular mounting cavity (a) is formed between the protective plate (2.7a) and the guide pipe, and the electromagnet (2.8) and the upper end of the connecting pipe (2.9) are arranged in the annular mounting cavity (a).

7. A water supply system for a railway passenger car, characterized by The upper water branch includes an upper water joint (2), an upper water hose (3), a ground water supply pipe (4), a three-way valve (5) and a ground water return pipe (7), the three-way valve (5) is a manual three-way valve, the water inlet end of the three-way valve (5) is connected with the main water supply pipe (14) through the ground water supply pipe (4), the water outlet end of the three-way valve (5) is connected with the upper water joint (2) through the upper water hose (3), the upper water joint (2) is used for being connected with the passenger train water injection pipe (1), the water return end of the three-way valve (5) is connected with one end of the ground water return pipe (7), and the other ends of all the ground water return pipes (7) are connected with the water return discharge pipe (15); the upper water joint (2) includes a claw (2.1), a guide pipe (2.2), a sliding sleeve (2.3), a tensioning mechanism and a connecting pipe (2.9), one end of the connecting pipe (2.9) is connected with the upper water hose (3), the other end of the connecting pipe (2.9) is connected with one end of the guide pipe (2.2), the tensioning mechanism includes an upper threaded sleeve (2.5), a connecting sleeve (2.6), a lower threaded sleeve (2.7) and an electromagnet (2.8), the upper threaded sleeve (2.5) and the lower threaded sleeve (2.7) are movably sleeved on the guide pipe (2.2) in the axial direction, the connecting sleeve (2.6) is threadedly connected with the upper threaded sleeve (2.5) and the lower threaded sleeve (2.7), and the electromagnet (2.8) is fixedly arranged on the connecting pipe (2.9); a plurality of claws (2.1) are circumferentially hinged to the upper part of the upper threaded sleeve (2.5), the sliding sleeve (2.3) is sleeved on the outer side of the plurality of claws (2.1), and the sliding sleeve (2.3) can slide along the axial direction of the guide pipe (2.2) and control the claws (2.1) to be closed or opened; a limiting block (2.2a) for limiting the movement range of the guide pipe (2.2) is arranged on the outer peripheral surface of the guide pipe (2.2), and the guide pipe (2.2) is provided with a guide joint (2.10) at the end for being connected with the passenger train water injection pipe (1). When the water inlet joint (2) needs to be connected with the water injection pipe (1) of the passenger train, the electromagnet (2.8) is first energized, and the electromagnet (2.8) is attracted together with the lower threaded sleeve (2.7) after being energized; then the slide sleeve (2.3) is moved to place the plurality of clamping claws (2.1) in an open state, and the guide pipe (2.2) is aligned with the water injection port of the water injection pipe (1) of the passenger train; then the slide sleeve (2.3) is pushed and clamped on the plurality of clamping claws, the plurality of clamping claws are folded above the port along the convex post of the water injection pipe (1) of the passenger train, and the water injection pipe (1) of the passenger train is clamped; then the connecting sleeve (2.6) is rotated in the forward direction, the upper threaded sleeve (2.5) and the lower threaded sleeve (2.7) are moved towards each other, the lower threaded sleeve (2.7) is driven by the electromagnet (2.8) to move the guide pipe upwards, the upper threaded sleeve (2.5) drives the clamping claw (2.1) to move downwards, and the thrust of the port along the convex post of the water injection pipe (1) of the passenger train acts on the clamping claw (2.1) to tightly connect the water inlet joint (2) with the water injection pipe (1) of the passenger train; After the water inlet operation is completed, the electromagnet (2.8) loses power and loses magnetic force, the electromagnet (2.8) and the lower threaded sleeve (2.7) are separated from the attraction, and the tension of the tensioning mechanism is released; the guide pipe (2.2) and the connecting pipe (2.9), the electromagnet (2.8), and the water inlet hose (3) fixed together are separated from the water injection pipe (1) of the passenger train under the action of gravity; the guide pipe (2.2) drives the slide sleeve (2.3) to move to one side of the upper threaded sleeve (2.5) during the falling process, releases the slide sleeve from the clamping claw, the clamping claw is opened, and the water inlet joint is separated from the water injection pipe (1) of the passenger train.

Images