Gas supply system, gas engine system and vehicle

Abstract

The utility model discloses gas supply system, gas engine system and vehicle, gas source, first switch valve, two interlocking switch valves, second switch valve of this gas supply system are communicated in proper order, and the inlet of release switch valve is communicated on the pipeline that two interlocking switch valves communicate between through the communicating pipe, and the outlet of release switch valve and the outlet of second switch valve all communicate with emptying mouth, the inlet of detection gas source and third switch valve communicates, and the outlet of third switch valve communicates on the pipeline that one of two interlocking switch valves downstream communicates with second switch valve, first pressure detection spare is set up on the pipeline that first switch valve and two interlocking switch valves communicate between, and second pressure detection spare is set up on the pipeline that one of two interlocking switch valves downstream communicates with second switch valve, and third pressure detection spare is set up on the communicating pipe, has promoted the accuracy whether release switch valve and two interlocking switch valves exist leak, and low in production cost.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to gas supply systems, gas engine systems and vehicles. Background Technology

[0002] Gas turbine engines primarily use gases such as ammonia and methane as fuel, which are supplied to the engine via a gas supply system for combustion. To ensure safe operation, the gas supply system is typically equipped with an interlock valve assembly, which usually includes two interlock valves.

[0003] In related technologies, to monitor whether there is leakage in the interlock valve in the interlock valve assembly, a position sensor is usually installed on the valve core of the interlock valve. The position sensor monitors the position of the valve core in real time to determine whether the interlock valve is truly closed when closed. However, the interlock valve will wear down due to frequent opening and closing during operation, and the gas introduced into the interlock valve may carry debris and other impurities that will accumulate in critical positions within the interlock valve. Therefore, relying solely on a position sensor on the valve core to determine whether there is leakage in the interlock valve is inaccurate and poses a safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a gas supply system, a gas engine system, and a vehicle to solve the aforementioned problems existing in gas supply systems in related technologies.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A gas supply system includes a gas source, a first switching valve, an interlocking valve assembly, a second switching valve, a connecting pipe, a detection gas source, a third switching valve, a first pressure detection element, a second pressure detection element, and a third pressure detection element. The interlocking valve assembly includes a venting switching valve and two interlocking switching valves. The gas source, the first switching valve, the two interlocking switching valves, and the second switching valve are sequentially connected. The inlet of the venting switching valve is connected to the connecting pipe between the two interlocking switching valves. The outlets of the venting switching valve and the second switching valve are both connected to an vent. The detection gas source is connected to the inlet of the third switching valve, and the outlet of the third switching valve is connected to the downstream of the two interlocking switching valves in the connecting pipe, which is connected to the second switching valve.

[0007] The first pressure detection element is installed on the upstream pipeline connecting the first switching valve and one of the two interlocking switching valves; the second pressure detection element is installed on the downstream pipeline connecting the two interlocking switching valves; and the third pressure detection element is installed on the connecting pipe.

[0008] As an alternative to the aforementioned gas supply system, both the interlocking switch valve and the venting switch valve are electrically operated shut-off valves.

[0009] As an alternative to the aforementioned gas supply system, the first switching valve is a manually operated switching valve; and / or, the second switching valve is an electrically operated shut-off valve; and / or, the third switching valve is an electrically operated shut-off valve.

[0010] As an alternative to the aforementioned gas supply system, the first pressure detection element, the second pressure detection element, and the third pressure detection element are all pressure sensors.

[0011] As an alternative to the aforementioned gas supply system, the detection gas source is a non-flammable gas source.

[0012] Gas engine system, including the aforementioned gas supply system.

[0013] As an alternative to the above-mentioned gas engine system, the gas engine system further includes a gas engine. The outlet of the third switching valve is connected to a pipeline located downstream of one of the two interlocked switching valves and connected to the second switching valve at a preset position. The gas engine is installed on the pipeline between the preset position and the inlet of the second switching valve. The third pressure detection element is located upstream of the gas engine.

[0014] As an alternative to the above-mentioned gas engine system, the gas engine system further includes a gas engine, the gas inlet of which is connected to the outlet of the second switching valve, and the outlet of which is connected to the vent.

[0015] As an alternative to the above-mentioned gas engine system, the gas engine system further includes a pressure regulating valve disposed upstream of the gas engine, the pressure regulating valve being used to regulate the pressure of the gas supplied to the gas engine.

[0016] Vehicles, including the aforementioned gas engine system.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides a gas supply system, a gas engine system, and a vehicle. The gas supply system includes a gas source, a first switching valve, an interlock valve assembly, a second switching valve, a connecting pipe, a detection gas source, a third switching valve, a first pressure detection element, a second pressure detection element, and a third pressure detection element. The interlock valve assembly includes a venting switching valve and two interlocking switching valves. The gas source, the first switching valve, the two interlocking switching valves, and the second switching valve are sequentially connected. The inlet of the venting switching valve is connected to the connecting pipe between the two interlocking switching valves via the connecting pipe. The outlets of the venting switching valve and the second switching valve are both connected to an vent. The detection gas source is connected to the inlet of the third switching valve. The outlet of the third switching valve is connected to the downstream of the two interlocking switching valves in the connecting pipe. The first pressure detection element is located on the connecting pipe between the first switching valve and the upstream of the two interlocking switching valves. The second pressure detection element is located on the downstream of the two interlocking switching valves in the connecting pipe. The third pressure detection element is located on the connecting pipe.

[0019] When supplying gas to the gas engine, the first control valve, the two interlocking control valves, and the second control valve are all in the open state, while the venting control valve and the third control valve are all in the closed state, thus controlling the gas supply and enabling the gas to be delivered to the gas engine through the gas supply system.

[0020] When detecting whether there is leakage in the vent valve and the two interlock valves of the interlock valve group, the first valve is closed, and the two interlock valves, the vent valve, and the second valve are all opened for venting. When the pressure values ​​detected by the first, second, and third pressure sensors are all atmospheric pressure, the upstream interlock valve, the vent valve, and the second valve are all closed, the third valve is opened, and the detection gas source starts supplying gas. It can be understood that at this time, the pressure in the pipeline between the upstream interlock valve and the first valve is atmospheric pressure. When the pressure values ​​detected by the second and third pressure sensors are both greater than the set pressure value of atmospheric pressure, the downstream interlock valve and the third valve are closed, and the second valve is opened until the pressure detected by the second pressure sensor is atmospheric pressure, at which point the second valve is closed to maintain pressure. After a set time, the presence of leakage in the vent valve and the two interlock valves of the interlock valve group is determined based on the pressure values ​​detected by the first, second, and third pressure sensors.

[0021] Secondly, the interlock valves used in the interlock valve assembly are interlocking on / off valves, which effectively simplifies the structure of the gas supply system and reduces production costs compared to existing technologies.

[0022] Therefore, this gas supply system can not only supply gas to the gas engine, but also detect whether there is leakage in the relief switch valve and the two interlock switch valves of the interlock valve group according to the actual operating conditions, which effectively improves the safety of the gas supply system and improves the detection accuracy compared with the existing technology. Secondly, it can effectively simplify the structure of the gas supply system and reduce production costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a gas engine system provided in a specific embodiment of this utility model.

[0024] In the picture:

[0025] 1. Gas source; 2. First switch valve; 31. Relief switch valve; 32. Interlock switch valve; 4. Second switch valve; 5. Gas source detection; 6. Third switch valve; 7. First pressure detection element; 8. Second pressure detection element; 9. Third pressure detection element; 10. Vent port; 11. Gas engine; 12. Pressure regulating valve; 13. Controller. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] This utility model provides a gas supply system, such as Figure 1 As shown, the gas supply system includes a gas source 1, a first switching valve 2, an interlock valve assembly, a second switching valve 4, a connecting pipe, a gas detection source 5, a third switching valve 6, a first pressure detection element 7, a second pressure detection element 8, and a third pressure detection element 9. The interlock valve assembly includes a venting valve 31 and two interlocking valves 32. The gas source 1, the first switching valve 2, the two interlocking valves 32, and the second switching valve 4 are connected in sequence. The inlet of the venting valve 31 is connected to the pipeline connecting the two interlocking valves 32 through the connecting pipe. The outlet of the venting valve 31... The outlets of the first and second switching valves 4 are both connected to the vent 10; the detection gas source 5 is connected to the inlet of the third switching valve 6, and the outlet of the third switching valve 6 is connected to the downstream one of the two interlocking switching valves 32, which is connected to the second switching valve 4; the first pressure detection element 7 is installed on the pipeline connecting the first switching valve 2 and the upstream one of the two interlocking switching valves 32, the second pressure detection element 8 is installed on the pipeline connecting the downstream one of the two interlocking switching valves 32, which is connected to the second switching valve 4, and the third pressure detection element 9 is installed on the connecting pipe.

[0031] Take the application of this gas supply system to a gas engine system as an example.

[0032] When supplying gas to the gas engine 11, the first switch valve 2, the two interlock switch valves 32 and the second switch valve 4 are all in the open state, and the vent switch valve 31 and the third switch valve 6 are all in the closed state, controlling the gas source 1 to supply gas, so that the gas can be delivered to the gas engine 11 through the gas supply system.

[0033] When detecting whether there is leakage in the vent valve 31 and the two interlock valves 32 of the interlock valve assembly, the first valve 2 is closed, and the two interlock valves 32, the vent valve 31, and the second valve 4 are all opened for venting. When the pressure values ​​detected by the first pressure sensor 7, the second pressure sensor 8, and the third pressure sensor 9 are all atmospheric pressure, the upstream interlock valve 32, the vent valve 31, and the second valve 4 are all closed, the third valve 6 is opened, and the detection gas source 5 starts supplying gas. It can be understood that at this time, the upstream interlock valve 32 and... The pressure in the pipeline between the first switching valve 2 is atmospheric pressure. When the pressure values ​​detected by the second pressure sensor 8 and the third pressure sensor 9 are both greater than the set pressure value of atmospheric pressure, the downstream one of the two interlocking switching valves 32 and the third switching valve 6 are closed, and the second switching valve 4 is opened until the pressure detected by the second pressure sensor 8 is atmospheric pressure, at which point the second switching valve 4 is closed to maintain pressure. After a set time, the pressure values ​​detected by the first pressure sensor 7, the second pressure sensor 8, and the third pressure sensor 9 are used to determine whether there is leakage in the relief switching valve 31 and the two interlocking switching valves 32 of the interlocking valve group. The specific determination process is as follows:

[0034] If, after the set time, the pressure values ​​detected by the first pressure detection element 7 and the second pressure detection element 8 are still atmospheric pressure, and the pressure value detected by the third pressure detection element 9 is still the set pressure value, it indicates that there is no leakage in the relief switch valve 31 and the two interlock switch valves 32.

[0035] If, after the set time, the pressure value detected by the first pressure detection element 7 is greater than atmospheric pressure, the pressure value detected by the third pressure detection element 9 is less than the set pressure value, and the pressure value detected by the second pressure detection element 8 is still atmospheric pressure, it indicates that there is a leak in the upstream one of the two interlocked switching valves 32.

[0036] If, after the set time, the pressure value detected by the second pressure detection element 8 is greater than atmospheric pressure, the pressure value detected by the third pressure detection element 9 is less than the set pressure value, and the pressure value detected by the first pressure detection element 7 is still atmospheric pressure, it indicates that there is a leak in the downstream one of the two interlocked switching valves 32.

[0037] If, after the set time, the pressure values ​​detected by the first pressure detection element 7 and the second pressure detection element 8 are still atmospheric pressure, and the pressure value detected by the third pressure detection element 9 is less than the set pressure value, it indicates that there is a leak in the relief switch valve 31.

[0038] Secondly, the interlock valve used in the interlock valve assembly is an interlock switch valve 32, which effectively simplifies the structure of the gas supply system and reduces production costs compared to existing technologies.

[0039] Therefore, this gas supply system can not only supply gas to the gas engine 11, but also detect whether there is leakage in the relief switch valve 31 and the two interlock switch valves 32 of the interlock valve group according to the actual working conditions, which effectively improves the safety of the gas supply system and improves the detection accuracy compared with the existing technology. Secondly, it can effectively simplify the structure of the gas supply system and reduce production costs.

[0040] Specifically, the gas supplied by gas source 1 is ammonia, methane, or hydrogen, etc.

[0041] Optionally, in this embodiment, as Figure 1 As shown, both the interlock valve 32 and the vent valve 31 are electrically operated shut-off valves. This facilitates control of the interlock valve assembly when supplying gas to the gas engine 11, and ensures that the gas flows in only one direction. In other embodiments, the interlock valve 32 and / or the vent valve 31 may also be electromagnetic valves.

[0042] Optionally, such as Figure 1 As shown, the first switching valve 2 is a manually operated valve. This improves the safety of the gas supply from the gas source 1 and further reduces production costs. In this embodiment, the manually operated valve is exemplary as a ball valve. In other embodiments, the first switching valve 2 may also be an electromagnetic switching valve.

[0043] Optionally, in this embodiment, as Figure 1 As shown, the second switching valve 4 is an electrically operated shut-off valve. When supplying gas to the gas engine 11, it facilitates control of the second switching valve 4 and ensures that the gas flows in only one direction. In other embodiments, the second switching valve 4 may also be an electromagnetic switching valve.

[0044] Optionally, in this embodiment, as Figure 1 As shown, the third switching valve 6 is an electrically operated shut-off valve. When detecting whether there is leakage in the interlocking switching valve 32 and the venting switching valve 31 of the interlocking valve group, the third switching valve 6 is conveniently controlled, ensuring that the detection gas output from the detection gas source 5 can only flow in one direction. In other embodiments, the third switching valve 6 can also be configured as an electromagnetic switching valve.

[0045] Optionally, in this embodiment, the first pressure detection element 7, the second pressure detection element 8, and the third pressure detection element 9 are all pressure sensors. This facilitates the acquisition of the detected pressure values. In other embodiments, the first pressure detection element 7 and / or the second pressure detection element 8 and / or the third pressure detection element 9 may also be pressure gauges.

[0046] Optionally, the detection gas source 5 is a non-flammable gas source. This improves the safety of detecting whether there is a leak in the interlock switch valve 32 and the relief switch valve 31 of the interlock valve assembly, and also reduces detection costs. In this embodiment, nitrogen is used as an exemplary non-flammable gas source. In other embodiments, an inert gas source, etc., may also be used.

[0047] Among them, such as Figure 1 As shown, the gas supply system also includes a controller 13.

[0048] Specifically, such as Figure 1 As shown, in this embodiment, the two interlocking valves 32, the relief valve 31, the second valve 4, the third valve 6, the first pressure sensor 7, the second pressure sensor 8, and the third pressure sensor 9 are all electrically connected to the controller 13. The controller 13 can control the opening and closing states of the two interlocking valves 32, the relief valve 31, the second valve 4, and the third valve 6, and the controller 13 can automatically determine whether there is leakage in the relief valve 31 and the two interlocking valves 32 of the interlocking valve group based on the pressure values ​​detected by the first pressure sensor 7, the second pressure sensor 8, and the third pressure sensor 9. More specifically, in this embodiment, the controller 13 is a vehicle controller.

[0049] This utility model also provides a gas engine system, including the aforementioned gas supply system. By adopting the aforementioned gas supply system, it is possible to supply gas to the gas engine 11, and also to detect whether there is leakage in the relief switch valve 31 and the two interlock switch valves 32 of the interlock valve group according to actual operating conditions, effectively improving the safety of the gas engine system; secondly, it can effectively simplify the structure of the gas engine system and reduce production costs.

[0050] Optionally, in this embodiment, as Figure 1 As shown, the gas engine system also includes a gas engine 11. The outlet of the third switching valve 6 is connected to a pipeline downstream of one of the two interlocking switching valves 32, which is connected to the second switching valve 4. The connection position is a preset position. The gas engine 11 is located at the preset position on the pipeline between the inlet of the second switching valve 4 and the inlet of the second switching valve 4. The third pressure detection element 9 is located upstream of the gas engine 11. This arrangement enables the gas supply system to supply gas to the gas engine 11; secondly, it effectively simplifies the number of components and pipeline length of the gas engine system.

[0051] As an alternative, the gas engine system also includes a gas engine 11, whose gas inlet is connected to the outlet of the second switching valve 4, and whose outlet is connected to the vent port 10. This also allows for the supply of gas to the gas engine 11 via a gas supply system.

[0052] Further, optionally, in this embodiment, as Figure 1 As shown, the gas engine system also includes a pressure regulating valve 12 located upstream of the gas engine 11. The pressure regulating valve 12 is used to regulate the pressure of the gas supplied to the gas engine 11. This arrangement ensures a stable gas pressure supplied to the gas engine 11, thereby improving the operating performance of the gas engine 11.

[0053] Specifically, such as Figure 1 As shown, for the gas engine 11 located at a preset position on the pipeline between the inlet of the second switching valve 4 and the third pressure detection element 9 located upstream of the gas engine 11: the pressure regulating valve 12 is located on the pipeline connecting the third pressure detection element 9 and the gas engine 11.

[0054] Specifically, regarding the connection between the gas inlet of the gas engine 11 and the outlet of the second switching valve 4, and the connection between the outlet of the gas engine 11 and the vent 10: the pressure regulating valve 12 is located on the pipeline connecting the third pressure detection element 9 and the second switching valve 4, or the pressure regulating valve 12 is located on the pipeline connecting the gas inlet of the gas engine 11 and the outlet of the second switching valve 4.

[0055] Alternatively, in this embodiment, the pressure regulating valve 12 is an electrically operated pressure regulating valve. The electrically operated pressure regulating valve is electrically connected to the controller 13. When gas is being supplied to the gas engine 11 normally, the controller 13 controls the pressure regulating valve 12 based on the pressure value detected by the second pressure detection element 8 to stabilize the gas pressure supplied to the gas engine 11.

[0056] This utility model also provides a vehicle including the aforementioned gas engine system. By adopting the aforementioned gas engine system, the safety of vehicle use can be effectively improved, and the production cost of the vehicle can be effectively reduced.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gas supply system, characterized in that, The system includes a gas source (1), a first switching valve (2), an interlock valve group, a second switching valve (4), a connecting pipe, a detection gas source (5), a third switching valve (6), a first pressure detection element (7), a second pressure detection element (8), and a third pressure detection element (9); the interlock valve group includes a venting switching valve (31) and two interlocking switching valves (32); the gas source (1), the first switching valve (2), the two interlocking switching valves (32), and the second switching valve (4) are connected in sequence; the inlet of the venting switching valve (31) is connected to the pipeline connecting the two interlocking switching valves (32) through the connecting pipe; the outlet of the venting switching valve (31) and the outlet of the second switching valve (4) are both connected to the vent port (10); the detection gas source (5) is connected to the inlet of the third switching valve (6); the outlet of the third switching valve (6) is connected to the pipeline of the downstream interlocking switching valve (32) connected to the second switching valve (4); The first pressure detection element (7) is disposed on the upstream connecting pipeline of the first switching valve (2) and the two interlocking switching valves (32), the second pressure detection element (8) is disposed on the downstream connecting pipeline of the two interlocking switching valves (32) and the second switching valve (4), and the third pressure detection element (9) is disposed on the connecting pipe.

2. The gas supply system according to claim 1, characterized in that, Both the interlocking switch valve (32) and the venting switch valve (31) are electrically operated shut-off valves.

3. The gas supply system according to claim 1, characterized in that, The first switching valve (2) is a manually operated switching valve; and / or, the second switching valve (4) is an electrically operated shut-off valve; and / or, the third switching valve (6) is an electrically operated shut-off valve.

4. The gas supply system according to claim 1, characterized in that, The first pressure detection element (7), the second pressure detection element (8), and the third pressure detection element (9) are all pressure sensors.

5. The gas supply system according to claim 1, characterized in that, The detection gas source (5) is a non-flammable gas source.

6. A gas-fired engine system, characterized in that, Includes the gas supply system as described in any one of claims 1-5.

7. The gas engine system according to claim 6, characterized in that, The gas engine system also includes a gas engine (11). The outlet of the third switching valve (6) is connected to a pipeline located downstream of one of the two interlocking switching valves (32) and connected to the second switching valve (4) at a preset position. The gas engine (11) is located on the pipeline between the preset position and the inlet of the second switching valve (4). The third pressure detection element (9) is located upstream of the gas engine (11).

8. The gas engine system according to claim 6, characterized in that, The gas engine system also includes a gas engine (11), the gas inlet of which is connected to the outlet of the second switch valve (4), and the outlet of which is connected to the vent (10).

9. The gas engine system according to any one of claims 7-8, characterized in that, The gas engine system also includes a pressure regulating valve (12) disposed upstream of the gas engine (11), the pressure regulating valve (12) being used to regulate the pressure of the gas supplied to the gas engine (11).

10. A vehicle, characterized in that, Includes the gas engine system according to any one of claims 6-9.

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