Safety interlocking system and railway vehicle

Abstract

A safety interlocking system and a railway vehicle. The safety interlocking system comprises: a starting switch, a circuit breaker provided with a coil and a contact, and a hydrogenation device, wherein the contact of the circuit breaker is in a normally-closed state when the coil is not electrified; thus, when the starting switch is in a closed state, the coil in the circuit breaker is electrified, and the normally-closed contact is converted into a disconnected state; at the moment, it is ensured that the hydrogenation device does not execute a hydrogenation operation on the railway vehicle when the starting switch is not completely closed; and at the moment, the reliability of determining that a power supply of the railway vehicle is completely disconnected is improved by means of the provided circuit breaker, ensuring the operation safety.

Description

Safety interlocking system and rail vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 29, 2024, with application number 202410373343.6 and invention name “A Safety Interlocking System and Rail Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of rail transportation, and in particular to a safety interlocking system and a rail vehicle. Background Art

[0003] With the rapid development of new energy materials, hydrogen energy has gained widespread application. In recent years, hydrogen has been used to power rail vehicles, serving as fuel and driving them. However, due to the diffusibility and ignition properties of hydrogen, it is necessary to ensure that the power supply to a rail vehicle is completely disconnected before refueling.

[0004] The existing method of ensuring that the power supply of a rail vehicle is completely disconnected is for an operator to manually confirm that the rail vehicle is powered off. However, the manual confirmation method is unreliable and cannot avoid safety hazards caused by operator negligence.

[0005] In view of the above-mentioned problems, finding out how to improve the reliability of complete power disconnection of rail vehicles and ensure operational safety is a problem that those skilled in the art are trying their best to solve.

[0006] Summary of the Invention

[0007] The object of the present invention is to provide a safety interlocking system and a rail vehicle, which are used to solve the unreliability and safety problems of the rail vehicle power-off mode manually confirmed by an operator.

[0008] In order to solve the above technical problems, the present invention provides a safety interlock system, comprising: a starting switch, a circuit breaker provided with a coil and contacts, and a hydrogenation device;

[0009] The first end of the starting switch is connected to the positive pole of the vehicle-mounted control circuit, the second end of the starting switch is connected to the first end of the coil of the circuit breaker, the second end of the coil of the circuit breaker is connected to the negative pole of the vehicle-mounted control circuit, the movable end of the contact of the circuit breaker is connected to the first input end of the hydrogenation equipment, and the fixed end of the contact of the circuit breaker is connected to the second input end of the hydrogenation equipment, so that the coil of the circuit breaker is energized when the starting switch is in the closed state and controls the contacts to be opened.

[0010] On the other hand, it also includes: on-board hydrogen refueling port;

[0011] The first end of the on-board hydrogen refueling port is connected to the movable end of the contact of the circuit breaker, and the second end of the on-board hydrogen refueling port is connected to the fixed end of the contact of the circuit breaker.

[0012] On the other hand, it also includes: a vehicle-mounted hydrogen refueling port connector;

[0013] The first end of the on-board hydrogen refueling port connector is connected to the first end of the on-board hydrogen refueling port, the second end of the on-board hydrogen refueling port connector is connected to the second end of the on-board hydrogen refueling port, the third end of the on-board hydrogen refueling port connector is connected to the first input end of the hydrogen refueling equipment, and the fourth end of the on-board hydrogen refueling port connector is connected to the second input end of the hydrogen refueling equipment.

[0014] On the other hand, the hydrogenation equipment includes: a hydrogenation machine controller, a hydrogenation gun;

[0015] The first control end of the hydrogenator controller is connected to the first input end of the hydrogenator gun, the second control end of the hydrogenator controller is connected to the second input end of the hydrogenator gun, the first output end of the hydrogenator gun is connected to the third end of the vehicle-mounted hydrogenation port connector, and the second output end of the hydrogenator gun is connected to the fourth end of the vehicle-mounted hydrogenation port connector.

[0016] In another aspect, it also includes: an electrical connector;

[0017] The first end of the electrical connector is connected to the third end of the vehicle-mounted hydrogen refueling port connector, the second end of the electrical connector is connected to the fourth end of the vehicle-mounted hydrogen refueling port connector, the third end of the electrical connector is connected to the first output end of the hydrogen refueling gun, and the fourth end of the electrical connector is connected to the second output end of the hydrogen refueling gun.

[0018] On the other hand, it also includes: a hydrogenation gun connector;

[0019] The first end of the hydrogenation gun connector is connected to the first output end of the hydrogenation gun, the second end of the hydrogenation gun connector is connected to the second output end of the hydrogenation gun, the third end of the hydrogenation gun connector is connected to the third end of the vehicle-mounted hydrogenation port connector, and the fourth end of the hydrogenation gun connector is connected to the fourth end of the vehicle-mounted hydrogenation port connector.

[0020] On the other hand, the hydrogenation machine controller and the hydrogenation gun are connected via a cable.

[0021] On the other hand, it also includes: buzzer;

[0022] The buzzer is connected to the movable end of the contact of the circuit breaker.

[0023] On the other hand, it also includes: warning lights;

[0024] The warning light is connected to the movable end of the contact of the circuit breaker.

[0025] In order to solve the above technical problems, the present invention also provides a rail vehicle, comprising all the above-mentioned safety interlocking systems.

[0026] The present invention provides a safety interlock system comprising: a starting switch, a circuit breaker provided with a coil and contacts, and hydrogen refueling equipment; wherein the contacts of the circuit breaker are in a normally closed state when the coil is not energized. Therefore, when the starting switch is in the closed state, the coil in the circuit breaker is energized, converting the normally closed contacts to an open state. In this case, it can be ensured that the hydrogen refueling equipment does not perform hydrogen refueling operations on rail vehicles when the starting switch is not completely closed. In this case, the provision of the circuit breaker improves the reliability of determining that the power supply of the rail vehicle is completely disconnected, thereby ensuring operational safety.

[0027] The present invention also provides a rail vehicle with the same effects as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a structural diagram of a first safety interlock system provided by an embodiment of the present invention;

[0030] FIG2 is a structural diagram of a second safety interlock system provided by an embodiment of the present invention.

[0031] Among them, 10 is the starting switch, 11 is the circuit breaker, 12 is the hydrogenation equipment, 20 is the vehicle-mounted hydrogenation port, 21 is the vehicle-mounted hydrogenation port connector, 22 is the electrical connector, 23 is the hydrogenation gun connector, 24 is the hydrogenation gun, and 25 is the hydrogenation machine controller. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] The core of the present invention is to provide a safety interlock system and a rail vehicle, which can improve the reliability of complete power disconnection of the rail vehicle and ensure operational safety.

[0034] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] FIG1 is a structural diagram of a first safety interlock system provided by an embodiment of the present invention. As shown in FIG1 , the safety interlock system includes: a starting switch 10, a circuit breaker 11 provided with a coil A and a contact K, and a hydrogenation device 12;

[0036] The first end of the starting switch is connected to the positive pole of the vehicle control circuit, the second end of the starting switch is connected to the first end of the circuit breaker coil, the second end of the circuit breaker coil is connected to the negative pole of the vehicle control circuit, the movable end of the circuit breaker contact is connected to the first input end of the hydrogenation equipment, and the fixed end of the circuit breaker contact is connected to the second input end of the hydrogenation equipment, so that the circuit breaker coil is energized when the starting switch is in the closed state and the contact is controlled to be open.

[0037] In this embodiment, the start switch can be a physical switch button in the railway train driver's control room, or an electric key switch on the control circuit that indicates whether the train is powered off. For this start switch, only the start gear and the shutdown gear are set, where the start gear is represented by "ON" and the shutdown gear is represented by "OFF".

[0038] When the start switch is an electric key switch, when the driver inserts the train key into the keyhole and rotates the train key to the start position, pin 1 and pin 2 inside the start switch are connected, and the start switch is in the on state; when the train key is inserted into the keyhole and rotated to the off position, pin 1 and pin 2 inside the start switch are disconnected, and the start switch is in the off state;

[0039] The circuit breaker in this embodiment can be used to detect the status of a rail train. It can be understood that the status of the rail train is the on state or the off state of the starting switch. The circuit breaker in this embodiment is provided with a coil A and a contact K, wherein the contact K is a normally closed contact, that is, the coil is not energized and the contact is closed.

[0040] At this time, when the starting switch is in the on state, the coil in the circuit breaker is energized, thereby causing the contacts to be disconnected. At this time, the hydrogenation equipment cannot form a circuit with the circuit breaker and the starting switch; when the starting switch is in the off state, the coil in the circuit breaker loses power, thereby causing the contacts to be closed. At this time, the hydrogenation equipment can form a circuit with the circuit breaker and the starting switch; it can be seen that only when the starting switch is disconnected and the contacts of the circuit breaker are closed, can the hydrogenation equipment form a circuit with the circuit breaker and the starting switch, so that when it is determined that the power supply of the rail vehicle is completely disconnected, the hydrogenation equipment can be used to refuel the rail train. At this time, the reliability of the complete disconnection of the power supply of the rail vehicle can be improved, and the safety of the rail train operation can be ensured.

[0041] FIG2 is a structural diagram of a second safety interlock system provided by an embodiment of the present invention. As shown in FIG2 , on the basis of the above embodiment, a vehicle-mounted hydrogen filling port 20, a vehicle-mounted hydrogen filling port connector 21, an electrical connector 22, a hydrogen filling gun connector 23, a hydrogen filling gun 24, and a hydrogen filling machine controller 25 are further provided;

[0042] In this embodiment, the hydrogenation equipment 12 includes a hydrogenation gun 24 and a hydrogenation machine controller 25, and the hydrogenation machine controller and the hydrogenation gun are connected by a cable. The specific connection method of the safety interlock system is as follows:

[0043] The positive pole of the on-board control circuit is connected to the first end of the starting switch, the second end of the starting switch is connected to the first end of the coil of the circuit breaker, the second end of the coil of the circuit breaker is connected to the negative pole of the on-board control circuit, the movable end of the contact of the circuit breaker is connected to the first end of the on-board hydrogen refueling port, the fixed end of the contact of the circuit breaker is connected to the second end of the on-board hydrogen refueling port, the first end of the on-board hydrogen refueling port connector is connected to the first end of the on-board hydrogen refueling port, the second end of the on-board hydrogen refueling port connector is connected to the second end of the on-board hydrogen refueling port, the third end of the on-board hydrogen refueling port connector is connected to the first end of the electrical connector, the fourth end of the on-board hydrogen refueling port connector is connected to the second end of the hydrogen refueling gun connector, the third end of the hydrogen refueling gun connector is connected to the first output end of the hydrogen refueling gun in the hydrogenation equipment, the fourth end of the hydrogen refueling gun connector is connected to the second output end of the hydrogen refueling gun, the first input end of the hydrogen refueling gun is connected to the first control end of the hydrogenation machine controller, and the second input end of the hydrogenation gun is connected to the second control end of the hydrogenation machine controller.

[0044] It is understandable that the hydrogenation machine controller is surrounded by peripheral circuits, which enable the hydrogenation machine controller to operate normally.

[0045] In addition, it should be noted that the on-board hydrogen refueling port is arranged on the side body of the rail train, and in some embodiments, the on-board hydrogen refueling port can be set as a socket and a plug that are embedded in each other on the rail train. At this time, the first end and the second end of the on-board hydrogen refueling port are integrally set as a socket, the first end and the second end of the on-board hydrogen refueling port connector are integrally set as a plug, the third end and the fourth end of the on-board hydrogen refueling port connector are integrally set as a socket, the first end and the second end of the electrical connector are integrally set as a plug, the third end and the fourth end of the electrical connector are integrally set as a socket, the first end and the second end of the hydrogen gun connector are integrally set as a plug, the third end and the fourth end of the hydrogen gun connector are integrally set as a socket, and the first input end and the second input end of the hydrogen gun are integrally set as a plug.

[0046] To ensure the airtightness of hydrogen transmission, airtight tape can be installed between each socket and plug to prevent hydrogen leakage from anywhere. In addition, to prevent serious hydrogen waste, a gas sensor can be installed in the peripheral circuit of the hydrogen filling machine controller to detect the concentration of hydrogen leakage. When the gas concentration detected by the gas sensor reaches a preset concentration, a prompt message is issued, preventing hydrogen waste and saving costs.

[0047] Among them, the prompt information can be expressed in text form or data string form. When the prompt information is expressed in text form, the prompt information can be expressed as "leak" or "not leaked" and so on; when the prompt information is expressed in data string form, the data string can be 1 bit, 2 bits, 4 bits, 8 bits, etc., and can be expressed as "1", "10", "1100", "00100111" in the order mentioned above. It should be noted that the above-mentioned methods of expressing prompt information are only a few of the many embodiments and do not limit the method of expressing prompt information. In addition, the data string can be converted into a decimal value to determine whether the value exceeds the preset value. When it exceeds the preset value, the prompt information is output; the number of 0s and 1s in the data string can be counted. When the number of 1s is greater than the number of 0s, the prompt information is output; the number of 0s or 1s in the data string can also be judged to exceed the preset number. If it exceeds the preset number, the prompt information is output. The above-mentioned implementation methods do not limit the prompt information in this application, and their implementation methods can be determined according to the implementation scenario.

[0048] Among them, the first control end of the hydrogenator controller and the second control end of the hydrogenator controller are both power contacts. When the contacts in the circuit breaker are closed, the contacts in the circuit breaker and the two power contacts form a loop. At this time, the hydrogenator controller starts working and refuels the rail train.

[0049] In some embodiments, the power contact corresponding to the first control terminal of the hydrogenation machine controller is set as a positive polarity contact, and the power contact corresponding to the second control terminal of the hydrogenation machine controller is set as a negative polarity contact.

[0050] In addition, a buzzer and a warning light are connected in series to the contacts of the circuit breaker. The working principles of the buzzer and the warning light are as follows:

[0051] When the starting switch is closed, the coil in the circuit breaker is energized, converting the normally closed contacts to an open state. At this time, the buzzer and the warning light cannot form a circuit, and the buzzer and the warning light do not work; correspondingly, when the starting switch is disconnected, the coil in the circuit breaker loses power, keeping the normally closed contacts in a closed state. At this time, the buzzer and the warning light form a circuit, and the buzzer and the warning light work, so as to send a warning signal to the operator so that the rail train can be refueled.

[0052] Among them, the warning information can be expressed in text form or data string form. When the warning information is expressed in text form, the warning information can be expressed as "start switch closed" or "start switch open"; when the warning information is expressed in data string form, the data string can be 1 bit, 2 bits, 4 bits, 8 bits, etc., and can be expressed in the order mentioned above as "1", "01", "0110", "10110001". It should be noted that the above-mentioned methods of expressing warning information are only a few of many embodiments and do not limit the method of expressing warning information. In addition, the data string can be converted into a decimal value to determine whether the value exceeds a preset value. When the preset value is exceeded, the warning information is output; the number of 0s and 1s in the data string can be counted. When the number of 1s is greater than the number of 0s, the warning information is output; it can also be determined whether the number of 0s or 1s in the data string exceeds a preset number. If it exceeds the preset number, the warning information is output. The above-mentioned implementation methods do not limit the prompt information in this application. Its implementation method can be determined according to the implementation scenario.

[0053] In this embodiment, the buzzer is an integrated electronic sounder powered by a DC voltage. It can be driven by a pulse signal or a square wave signal, which requires a corresponding waveform generator. It is understood that the waveform generator needs to be connected in series with the buzzer and the circuit breaker contacts.

[0054] The sound-generating principle of a buzzer consists of a vibration device and a resonance device. Buzzers are divided into passive self-excitation buzzers and active self-excitation buzzers. Passive self-excitation buzzers convert a square wave signal input into a resonance device and output a sound signal, which makes the passive self-excitation buzzer sound. Active self-excitation buzzers generate sound signals by inputting a DC power supply, passing through the amplification sampling circuit of the vibration device under the action of the resonance device, which makes the active self-excitation buzzer sound.

[0055] Similarly, the warning light can be set as a light-emitting diode (LED). The LED light can be driven by a high-level signal or a low-level signal. In this case, a waveform collector is required. It is understandable that the waveform collector needs to be connected in series with the LED light and the contacts of the circuit breaker. In this case, the signal output by the waveform collector is a square wave signal.

[0056] The core part of the light-emitting diode is a chip composed of P-type semiconductor and N-type semiconductor. There is a transition layer between the P-type semiconductor and the N-type semiconductor, which is called a PN junction. In the PN junction of certain semiconductor materials, when the injected minority carriers recombine with the majority carriers, the excess energy is released in the form of light, thereby directly converting electrical energy into light energy. When a reverse voltage is applied to the PN junction, it is difficult for minority carriers to be injected, so no light is emitted. When a forward voltage is applied to the PN junction and current flows from the anode to the cathode of the PN junction, the semiconductor crystal emits light of different colors from ultraviolet to infrared. At this time, the intensity of the light is related to the current. In some embodiments, there are no restrictions on the model, size, output sound signal, and color of the light generated by the LED lamp and buzzer, and their implementation method can be determined according to the specific implementation scenario.

[0057] When the starting switch is an electric key switch, if the buzzer and warning light connected in series with the contacts of the circuit breaker send out a warning signal, the operator needs to return to the control room of the rail train to check the status of the train key inserted into the keyhole, and rotate the train key to the starting position so that pin 1 inside the starting switch is connected to pin 2, so that the starting switch is in the on state.

[0058] Finally, the on-board control circuit should be set on the main control board of the rail train. The location on the main control board and the circuit layout are not limited in this embodiment and can be set according to the specific implementation method of the rail train.

[0059] To address the above technical issues, the present invention further provides a rail vehicle comprising the aforementioned safety interlock system. The safety interlock system comprises a starting switch, a circuit breaker equipped with a coil and contacts, and hydrogen refueling equipment. The contacts of the circuit breaker are normally closed when the coil is not energized. Therefore, when the starting switch is closed, the coil in the circuit breaker is energized, switching the normally closed contacts to an open state. This ensures that the hydrogen refueling equipment will not perform hydrogen refueling operations on the rail vehicle unless the starting switch is fully closed. The circuit breaker improves the reliability of determining that the rail vehicle's power supply is completely disconnected, ensuring operational safety.

[0060] In this embodiment, the height of the hydrogen refueling equipment should be comparable to the height of the onboard hydrogen refueling port on the rail train to facilitate refueling operations on the rail train and further prevent hydrogen leakage. Even in the above embodiment, airtight tape is installed at the onboard hydrogen refueling port and the corresponding plug. However, if the height difference between the hydrogen refueling equipment and the onboard hydrogen refueling port is too large, hydrogen leakage may occur. Therefore, in this embodiment, in order to ensure the airtightness of hydrogen transmission, the height of the hydrogen refueling equipment needs to be comparable to the height of the onboard hydrogen refueling port.

[0061] Finally, the circuit breaker provided in the rail train can be used to detect the state of the rail train. It can be understood that the state of the rail train is the on state or the off state of the starting switch. In this embodiment, the circuit breaker is provided with a coil A and a contact K, wherein the contact K is a normally closed contact, that is, the coil is not energized and the contact is closed.

[0062] At this time, when the starting switch is in the on state, the coil in the circuit breaker is energized, thereby causing the contacts to be disconnected. At this time, the hydrogenation equipment cannot form a circuit with the circuit breaker and the starting switch; when the starting switch is in the off state, the coil in the circuit breaker loses power, thereby causing the contacts to be closed. At this time, the hydrogenation equipment can form a circuit with the circuit breaker and the starting switch; it can be seen that only when the starting switch is disconnected and the contacts of the circuit breaker are closed, can the hydrogenation equipment form a circuit with the circuit breaker and the starting switch, so that when it is determined that the power supply of the rail vehicle is completely disconnected, the hydrogenation equipment can be used to refuel the rail train. At this time, the reliability of the complete disconnection of the power supply of the rail vehicle can be improved, and the safety of the rail train operation can be ensured.

[0063] The above is a detailed introduction to a safety interlocking system and a rail vehicle provided by the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the present invention.

[0064] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A safety interlock system, characterized in that: include: Starting switches, circuit breakers with coils and contacts, and hydrogen refueling equipment; The first end of the starting switch is connected to the positive pole of the vehicle-mounted control circuit, the second end of the starting switch is connected to the first end of the coil of the circuit breaker, the second end of the coil of the circuit breaker is connected to the negative pole of the vehicle-mounted control circuit, the movable end of the contact of the circuit breaker is connected to the first input end of the hydrogenation equipment, and the fixed end of the contact of the circuit breaker is connected to the second input end of the hydrogenation equipment, so that the coil of the circuit breaker is energized when the starting switch is in the closed state and controls the contacts to be opened.

2. The safety interlock system according to claim 1, characterized in that: Also included: onboard hydrogen refueling port; The first end of the on-board hydrogen refueling port is connected to the movable end of the contact of the circuit breaker, and the second end of the on-board hydrogen refueling port is connected to the fixed end of the contact of the circuit breaker.

3. The safety interlock system according to claim 2, characterized in that: Also included: On-vehicle hydrogen refueling port connector; The first end of the on-board hydrogen refueling port connector is connected to the first end of the on-board hydrogen refueling port, the second end of the on-board hydrogen refueling port connector is connected to the second end of the on-board hydrogen refueling port, the third end of the on-board hydrogen refueling port connector is connected to the first input end of the hydrogen refueling equipment, and the fourth end of the on-board hydrogen refueling port connector is connected to the second input end of the hydrogen refueling equipment.

4. The safety interlock system according to claim 3, characterized in that: The hydrogenation equipment includes: a hydrogenation machine controller and a hydrogenation gun; The first control end of the hydrogenator controller is connected to the first input end of the hydrogenator gun, the second control end of the hydrogenator controller is connected to the second input end of the hydrogenator gun, the first output end of the hydrogenator gun is connected to the third end of the vehicle-mounted hydrogenation port connector, and the second output end of the hydrogenator gun is connected to the fourth end of the vehicle-mounted hydrogenation port connector.

5. The safety interlock system according to claim 4, characterized in that: Also includes: electrical connectors; The first end of the electrical connector is connected to the third end of the on-board hydrogen refueling port connector, the second end of the electrical connector is connected to the fourth end of the on-board hydrogen refueling port connector, and the electrical connector The third end of the electrical connector is connected to the first output end of the hydrogenation gun, and the fourth end of the electrical connector is connected to the second output end of the hydrogenation gun.

6. The safety interlock system according to claim 4, characterized in that: Also includes: Hydrogen gun connector; The first end of the hydrogenation gun connector is connected to the first output end of the hydrogenation gun, the second end of the hydrogenation gun connector is connected to the second output end of the hydrogenation gun, the third end of the hydrogenation gun connector is connected to the third end of the vehicle-mounted hydrogenation port connector, and the fourth end of the hydrogenation gun connector is connected to the fourth end of the vehicle-mounted hydrogenation port connector.

7. The safety interlock system according to claim 4, characterized in that: The hydrogenation machine controller is connected to the hydrogenation gun via a cable.

8. The safety interlock system according to claim 1, characterized in that: Also includes: buzzer; The buzzer is connected to the movable end of the contact of the circuit breaker.

9. The safety interlock system according to claim 1, characterized in that: Also includes: Warning lights; The warning light is connected to the movable end of the contact of the circuit breaker.

10. A rail vehicle, characterized in that: include: The safety interlock system according to any one of claims 1 to 9.

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