Integrated pressure reducing stabilizer and natural gas vehicle-mounted gas supply system

Abstract

This utility model relates to the technical field of natural gas vehicle-mounted gas supply systems, specifically disclosing an integrated pressure reducing and regulating device and a natural gas vehicle-mounted gas supply system. The integrated pressure reducing and regulating device includes a regulating device body, a solenoid valve assembly, and a filter assembly. The regulating device body has an inlet and an outlet connected sequentially. By using this integrated pressure reducing and regulating device, the solenoid valve assembly and the filter assembly are integrated into the regulating device body, effectively reducing the number of joints in the pipeline connections within the natural gas vehicle-mounted gas supply system, thereby reducing the risk of leakage. This effectively solves the problem in the prior art where the solenoid valve, filter, and regulating device are independent components, which easily leads to leakage during installation and affects the safety of the natural gas vehicle-mounted gas supply system. Simultaneously, it not only improves the overall stability and reliability of the natural gas vehicle-mounted gas supply system but also provides a feasible basis for the modular integration of natural gas vehicle-mounted gas supply systems.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas vehicle-mounted gas supply systems, and in particular to an integrated pressure reducing and stabilizing device and a natural gas vehicle-mounted gas supply system. Background Technology

[0002] Natural gas (LNG) on-board gas supply systems, thanks to their cryogenic storage and intelligent pressure regulation technologies, have become a core solution for the clean energy transformation of heavy-duty trucks in recent years. These systems convert -162°C liquefied natural gas into a stable-pressure gaseous fuel for the engine through cryogenic storage and vaporization pressure regulation. Specifically, the LNG in the tank passes through a carburetor, then typically through a solenoid valve and pressure regulator, followed by a filter to remove impurities before finally entering the engine.

[0003] However, in traditional natural gas vehicle-mounted gas supply systems, the pressure regulator and solenoid valve are two independent components. When connecting them, the number of joints increases, leading to leaks and increased economic costs. Furthermore, the filter is downstream of the pressure regulator, and the pressure regulator's sealing structure is a dynamic seal. When impurities enter, the sealing performance is easily damaged, affecting the safety and reliability of the entire natural gas vehicle-mounted gas supply system. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated pressure reducing and stabilizing device and a natural gas vehicle-mounted gas supply system to solve the problem that in the prior art, the solenoid valve, filter and pressure stabilizer are independent components, which are prone to leakage during installation and affect the safety of the natural gas vehicle-mounted gas supply system.

[0005] On one hand, this utility model provides an integrated pressure reducing and regulating device, which includes a regulator body, a solenoid valve assembly, and a filter assembly. The regulator body has an air inlet and an air outlet connected in sequence. The air outlet can be connected to an engine. One end of the solenoid valve assembly is disposed on the regulator body and located at the air inlet. One end of the filter assembly is disposed on the other end of the solenoid valve assembly. The filter assembly has an air intake chamber that can be connected to a carburetor. The solenoid valve assembly can connect or disconnect the air inlet and the air intake chamber. The filter assembly can filter the gas entering the air inlet.

[0006] As an optional technical solution for an integrated voltage regulator, the solenoid valve assembly includes a valve seat and a solenoid valve body. One end of the valve seat is disposed on the regulator body and located at the air inlet. The valve seat has a communicating cavity communicating with the air inlet. The solenoid valve body is movably disposed in the communicating cavity to connect or disconnect the air inlet and the air inlet cavity.

[0007] As an optional technical solution for integrated voltage reducer and regulator, the solenoid valve body includes a main valve body and a valve core structure. The main valve body is disposed on the valve seat and forms a connection hole with the valve seat. The connection hole communicates with the air inlet chamber. The valve core structure is movably disposed in the cavity of the main valve body to connect or disconnect the communication cavity and the air inlet chamber.

[0008] As an optional technical solution for integrated voltage regulators, the solenoid valve assembly further includes a first seal, which is disposed between the valve seat and the air inlet to seal the gap between the valve seat and the air inlet.

[0009] As an optional technical solution for integrated voltage regulator, the filter assembly includes a filter base and a filter element. The filter base is disposed at the other end of the solenoid valve assembly. The filter base has the air inlet chamber. The filter element is disposed in the air inlet chamber and located at the outlet of the air inlet chamber. The filter element is capable of filtering the gas entering the air inlet.

[0010] As an optional technical solution for an integrated voltage regulator, the filter housing includes a housing body and a filter end cap. The filter end cap is detachably mounted on the housing body. The filter end cap and the housing body enclose the air inlet chamber. The housing body is located at the other end of the solenoid valve assembly. The filter end cap has a dirt collection groove communicating with the air inlet chamber. The dirt collection groove is used to accommodate impurities filtered by the filter element.

[0011] As an optional technical solution for an integrated voltage regulator, the integrated voltage regulator includes an air inlet connector, one end of which is inserted into and connected to the filter base, and the air inlet chamber can be connected to the vaporizer through the air inlet connector.

[0012] As an optional technical solution for an integrated voltage regulator, the regulator body includes a regulator valve body, a piston, and an outlet end cap. The piston is movably disposed within the cavity of the regulator valve body. The outlet end cap is disposed at one end of the regulator valve body away from the solenoid valve assembly. The outlet end cap has the air outlet. The regulator valve body has the air inlet. One end of the solenoid valve assembly is disposed on the regulator valve body.

[0013] As an optional technical solution for an integrated voltage regulator, the regulator body also includes an elastic element, which is sleeved on the piston, and the two ends of the elastic element are respectively connected to the piston and the cavity of the regulator valve body.

[0014] On the other hand, this utility model provides a natural gas vehicle-mounted gas supply system, including a gas cylinder, a vaporizer, and an integrated pressure reducing and stabilizing device as described in any of the above solutions. The outlet of the gas cylinder is connected to the inlet of the vaporizer, the outlet of the vaporizer is connected to the filter assembly of the integrated pressure reducing and stabilizing device, and the stabilizing device body of the integrated pressure reducing and stabilizing device can be connected to the engine.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention provides an integrated pressure reducing and regulating device, comprising a regulator body, a solenoid valve assembly, and a filter assembly. The regulator body has an inlet and an outlet connected sequentially. Gas first enters the inlet chamber of the filter assembly, where it is filtered. The solenoid valve assembly then connects the inlet and inlet chamber, allowing the filtered gas to enter the inlet. The regulator body then regulates the gas pressure before it enters the engine. This integrated pressure reducing and regulating device integrates the solenoid valve assembly and the filter assembly into the regulator body, effectively reducing the number of joints in the natural gas vehicle supply system and thus lowering the risk of leakage. It effectively solves the problem in existing technologies where the solenoid valve, filter, and regulator are separate components, leading to leaks during installation and affecting the safety of the natural gas vehicle supply system. Furthermore, it not only improves the overall stability and reliability of the natural gas vehicle supply system but also provides a feasible basis for the modular integration of natural gas vehicle supply systems. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the integrated voltage reducer and regulator in an embodiment of this utility model.

[0018] In the picture:

[0019] 1. Voltage regulator body; 11. Air inlet; 12. Air outlet; 13. Voltage regulator valve body; 14. Piston; 15. Outlet end cap; 16. Elastic element;

[0020] 2. Solenoid valve assembly; 21. Valve seat; 211. Communicating cavity; 22. Solenoid valve body; 221. Main valve body; 222. Valve core structure; 2221. Valve core body; 2222. Armature; 2223. Stop; 2224. Solenoid coil; 2225. Fastening nut; 23. First seal; 24. Connecting hole;

[0021] 3. Filter assembly; 31. Air inlet chamber; 32. Filter base; 321. Base body; 322. Filter end cap; 3221. Dirt collection tank; 33. Filter element;

[0022] 4. Air intake connector;

[0023] 5. Sealing gasket assembly;

[0024] 6. Second sealing element;

[0025] 7. Third sealing element. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] like Figure 1As shown, this embodiment provides an integrated pressure reducing and regulating device, which includes a regulator body 1, a solenoid valve assembly 2, and a filter assembly 3. The regulator body 1 has an air inlet 11 and an air outlet 12 connected in sequence. The air outlet 12 can be connected to the engine. One end of the solenoid valve assembly 2 is disposed on the regulator body 1 and located at the air inlet 11. One end of the filter assembly 3 is disposed on the other end of the solenoid valve assembly 2. The filter assembly 3 has an air inlet chamber 31, which can be connected to the carburetor. The solenoid valve assembly 2 can connect or disconnect the air inlet 11 and the air inlet chamber 31. The filter assembly 3 can filter the gas entering the air inlet 11.

[0031] First, the gas enters the intake chamber 31 of the filter assembly 3. After being filtered by the filter assembly 3, the intake port 11 and the intake chamber 31 are connected by the solenoid valve assembly 2. The filtered gas enters the intake port 11 and is then pressure-stabilized by the pressure regulator body 1 before entering the engine. By adopting the integrated pressure reducing and stabilizing device of this invention, both the solenoid valve assembly 2 and the filter assembly 3 are integrated into the pressure regulator body 1, effectively reducing the number of pipe connection joints in the natural gas vehicle supply system, thereby reducing the risk of leakage. This effectively solves the problem in the prior art where the solenoid valve, filter, and pressure regulator are independent components, which are prone to leakage during installation and affect the safety of the natural gas vehicle supply system. At the same time, it not only improves the overall stability and reliability of the natural gas vehicle supply system, but also provides a feasible basis for the modular integration of the natural gas vehicle supply system.

[0032] In some embodiments, the solenoid valve assembly 2 includes a valve seat 21 and a solenoid valve body 22. One end of the valve seat 21 is disposed on the voltage regulator body 1 and located at the air inlet 11. The valve seat 21 has a communicating cavity 211 communicating with the air inlet 11. The solenoid valve body 22 is movably disposed within the communicating cavity 211, thereby enabling the air inlet 11 and the air inlet chamber 31 to be connected or disconnected.

[0033] Optionally, one end of the valve seat 21 has a connecting ring, which is inserted into the voltage regulator body 1 and is sealed to the inner wall of the voltage regulator body 1.

[0034] Furthermore, the solenoid valve body 22 includes a main valve body 221 and a valve core structure 222. The main valve body 221 is disposed on the valve seat 21 and forms a connection hole 24 between the main valve body 221 and the valve seat 21. The connection hole 24 communicates with the air intake chamber 31. The valve core structure 222 is movably disposed within the cavity of the main valve body 221, thereby connecting or disconnecting the communication chamber 211 and the air intake chamber 31.

[0035] Optionally, the valve core structure 222 includes a valve core body 2221, an armature 2222, a stop 2223, an electromagnetic coil 2224, and a fastening nut 2225. The valve core body 2221 is located within the cavity of the main valve body 221. The electromagnetic coil 2224 is mounted on the main valve body 221. One end of the armature 2222 is mounted at one end of the valve core body 2221, and the stop 2223 is mounted at the other end of the armature 2222. The fastening nut 2225 is used to fasten the electromagnetic coil 2224. When the electromagnetic coil 2224 is energized, it drives the armature 2222 to move. Then, the armature 2222 drives the valve core body 2221 to move within the cavity of the main valve body 221, thereby achieving the purpose of connecting or disconnecting the connecting cavity 211 and the intake cavity 31 through the valve core body 2221. The stop 2223 is used to limit the movement range of the armature 2222.

[0036] In this embodiment, the solenoid valve assembly 2 further includes a first sealing element 23. The first sealing element 23 is disposed between the valve seat 21 and the air inlet 11, thereby sealing the gap between the valve seat 21 and the air inlet 11 and improving the sealing effect between them. The first sealing element 23 may include, but is not limited to, a sealing ring.

[0037] In some embodiments, the filter assembly 3 includes a filter seat 32 and a filter element 33. The filter seat 32 is disposed at the other end of the solenoid valve assembly 2 and has an air inlet chamber 31. The filter element 33 is disposed in the air inlet chamber 31 and located at the outlet of the air inlet chamber 31. The gas entering the air inlet 11 can be filtered by the filter element 33.

[0038] Optionally, the filter element 33 is an arc-shaped filter element, wherein the material of the arc-shaped filter element includes, but is not limited to, polypropylene fiber, activated carbon, stainless steel or glass fiber.

[0039] Furthermore, the filter holder 32 includes a base 321 and a filter end cap 322. The filter end cap 322 is detachably mounted on the base 321 and has a dirt collection groove 3221 communicating with the air inlet chamber 31. The dirt collection groove 3221 can hold impurities filtered by the filter element 33. This arrangement facilitates the removal of the filter end cap 322, which can then be periodically removed to clean impurities from the dirt collection groove 3221 or to replace the filter element 33, without the need to disassemble the gas pipeline.

[0040] The filter end cap 322 and the seat 321 form an air intake chamber 31. The seat 321 is located at the other end of the solenoid valve assembly 2, which facilitates the installation of the seat 321.

[0041] In some embodiments, the integrated pressure reducing and regulating device includes an air inlet connector 4, one end of which is inserted into and connected to the filter seat 32. In this configuration, the air inlet chamber 31 can be connected to the vaporizer through the air inlet connector 4, which facilitates the connection of the gas pipeline through the air inlet connector 4.

[0042] In this embodiment, the pressure regulator body 1 includes a pressure regulator valve body 13, a piston 14, and an outlet end cap 15. The piston 14 is movably disposed within the cavity of the pressure regulator valve body 13. The outlet end cap 15 is located at the end of the pressure regulator valve body 13 opposite to the solenoid valve assembly 2, and has an outlet port 12. The pressure regulator valve body 13 has an inlet port 11, and one end of the solenoid valve assembly 2 is disposed within the pressure regulator valve body 13. This configuration allows the piston 14 to achieve pressure regulation of the gas.

[0043] Furthermore, the voltage regulator body 1 also includes an elastic element 16. The elastic element 16 is sleeved on the piston 14, and its two ends are connected to the piston 14 and the cavity of the voltage regulator valve body 13, respectively. The elastic element 16 facilitates the resetting of the piston 14.

[0044] Optionally, the integrated pressure reducing regulator also includes a sealing gasket assembly 5, a second seal 6, and a third seal 7. The sealing gasket assembly 5 is located at the air inlet and is disposed between the regulator valve body 13 and the valve seat 21, with the sealing gasket assembly 5 placed perpendicular to the gas flow direction. The second seal 6 is disposed between the end of the piston 14 facing the solenoid valve assembly 2 and the inner wall of the regulator valve body 13. The third seal 7 is disposed between the end of the piston 14 away from the solenoid valve assembly 2 and the inner wall of the regulator valve body 13. The second seal 6 and the third seal 7 include, but are not limited to, sealing rings.

[0045] This embodiment also provides a natural gas vehicle-mounted gas supply system, including a gas cylinder, a vaporizer, and the integrated pressure reducing and stabilizing unit described above. The outlet of the gas cylinder is connected to the inlet of the vaporizer, the outlet of the vaporizer is connected to the filter assembly 3 of the integrated pressure reducing and stabilizing unit, and the stabilizing unit body 1 of the integrated pressure reducing and stabilizing unit can be connected to the engine. The natural gas vehicle-mounted gas supply system of this invention integrates both the solenoid valve assembly 2 and the filter assembly 3 onto the stabilizing unit body 1, effectively reducing the number of pipe connections within the natural gas vehicle-mounted gas supply system, thereby reducing the risk of leakage. This effectively solves the problem in the prior art where the solenoid valve, filter, and stabilizing unit are independent components, which easily leads to leakage during installation and affects the safety of the natural gas vehicle-mounted gas supply system. Simultaneously, it not only improves the overall stability and reliability of the natural gas vehicle-mounted gas supply system but also provides a feasible basis for the modular integration of natural gas vehicle-mounted gas supply systems.

[0046] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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. An integrated voltage regulator, comprising: The device includes a pressure regulator body (1), a solenoid valve assembly (2), and a filter assembly (3). The pressure regulator body (1) has an air inlet (11) and an air outlet (12) connected in sequence. The air outlet (12) can be connected to the engine. One end of the solenoid valve assembly (2) is disposed on the pressure regulator body (1) and located at the air inlet (11). One end of the filter assembly (3) is disposed on the other end of the solenoid valve assembly (2). The filter assembly (3) has an air intake chamber (31) that can be connected to the carburetor. The solenoid valve assembly (2) can connect or disconnect the air inlet (11) and the air intake chamber (31). The filter assembly (3) can filter the gas entering the air inlet (11).

2. The integrated voltage regulator of claim 1, wherein, The solenoid valve assembly (2) includes a valve seat (21) and a solenoid valve body (22). One end of the valve seat (21) is disposed on the voltage regulator body (1) and located at the air inlet (11). The valve seat (21) has a communication cavity (211) communicating with the air inlet (11). The solenoid valve body (22) is movably disposed in the communication cavity (211) to connect or disconnect the air inlet (11) and the air inlet cavity (31).

3. The integrated voltage regulator of claim 2, wherein, The solenoid valve body (22) includes a main valve body (221) and a valve core structure (222). The main valve body (221) is disposed on the valve seat (21) and forms a connecting hole (24) between it and the valve seat (21). The connecting hole (24) communicates with the air intake chamber (31). The valve core structure (222) is movably disposed in the cavity of the main valve body (221) to connect or disconnect the connecting chamber (211) and the air intake chamber (31).

4. The integrated voltage regulator of claim 2, wherein, The solenoid valve assembly (2) further includes a first seal (23) disposed between the valve seat (21) and the air inlet (11) to seal the gap between the valve seat (21) and the air inlet (11).

5. The integrated voltage regulator of claim 1, wherein, The filter assembly (3) includes a filter seat (32) and a filter element (33). The filter seat (32) is disposed at the other end of the solenoid valve assembly (2). The filter seat (32) has the air inlet chamber (31). The filter element (33) is disposed in the air inlet chamber (31) and located at the outlet of the air inlet chamber (31). The filter element (33) is capable of filtering the gas entering the air inlet (11).

6. The integrated voltage regulator of claim 5, wherein, The filter base (32) includes a base body (321) and a filter end cap (322). The filter end cap (322) is detachably mounted on the base body (321). The filter end cap (322) and the base body (321) enclose the air inlet chamber (31). The base body (321) is located at the other end of the solenoid valve assembly (2). The filter end cap (322) has a dirt collection groove (3221) communicating with the air inlet chamber (31). The dirt collection groove (3221) is used to accommodate impurities filtered by the filter element (33).

7. The integrated voltage regulator of claim 5, wherein, The integrated pressure reducing and stabilizing device includes an air inlet connector (4), one end of which is inserted into and connected to the filter seat (32). The air inlet chamber (31) can be connected to the vaporizer through the air inlet connector (4).

8. The integrated voltage regulator of claim 1, wherein, The voltage regulator body (1) includes a voltage regulator valve body (13), a piston (14), and an outlet end cap (15). The piston (14) is movably disposed in the cavity of the voltage regulator valve body (13). The outlet end cap (15) is disposed at one end of the voltage regulator valve body (13) away from the solenoid valve assembly (2). The outlet end cap (15) has the air outlet (12). The voltage regulator valve body (13) has the air inlet (11). One end of the solenoid valve assembly (2) is disposed on the voltage regulator valve body (13).

9. The integrated voltage regulator of claim 8, wherein, The voltage regulator body (1) also includes an elastic element (16), which is sleeved on the piston (14). The two ends of the elastic element (16) are respectively connected to the piston (14) and the cavity of the voltage regulator valve body (13).

10. A natural gas vehicle fuel supply system characterized by, It includes a gas cylinder, a vaporizer, and an integrated pressure reducing and stabilizing device as described in any one of claims 1-9, wherein the outlet of the gas cylinder is connected to the inlet of the vaporizer, the outlet of the vaporizer is connected to the filter assembly (3) of the integrated pressure reducing and stabilizing device, and the stabilizing device body (1) of the integrated pressure reducing and stabilizing device is connected to an engine.

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