Combination valve for compressed natural gas cylinder vehicle

Abstract

The utility model provides an automotive combination valve for a compressed natural gas bottle, which relates to the technical field of gas valves and comprises a valve body, a manual cut-off component arranged on one side of the valve body, an electromagnetic valve switch component arranged on the other side of the valve body and a temperature protection component arranged on one side of the valve body. The combined gas valve is installed on a compressed natural gas cylinder, the problem that a gas storage cylinder of a natural gas energy automobile is inconvenient to operate is effectively solved, the electromagnetic valve switch assembly is controlled by an automobile ECU computer board, a pipeline is automatically closed to supply gas when power is off, potential safety hazards caused by leakage or other factors are avoided, and the gas storage cylinder is safe and reliable. The double-insurance temperature and pressure relief device is arranged on the valve body, so that gas in the gas storage bottle is safer to use, when the temperature exceeds a designed value, fusible alloy in the temperature relief device is molten, gas in the gas storage bottle is quickly released, and when the pressure exceeds a set value, a safety disc in the relief valve is opened, the relief valve is opened, and the gas in the gas storage bottle is quickly released. And emergency pressure relief of gas in the gas storage bottle is realized.

Description

Technical Field

[0001] This utility model relates to the field of gas valve technology, and in particular to a combination valve for compressed natural gas cylinder vehicles. Background Technology

[0002] Compressed natural gas (CNG), as a clean energy source, is increasingly being used in the automotive industry. The combination valve for CNG cylinder vehicles is a key component in the CNG vehicle's gas supply pipeline, and its performance directly affects the vehicle's safe and stable operation.

[0003] Natural gas cylinder valves are switching components in the pipeline system of natural gas-powered vehicles that control the flow from the gas cylinder to the pressure reducing valve. They mainly consist of a valve body, valve, and high-pressure fittings, serving to connect / close upstream and downstream systems. In actual use, due to the cumbersome operation of the valve, users usually only close it when changing gas cylinders, leaving it open most of the time, which poses a certain safety hazard. Summary of the Invention

[0004] The purpose of this utility model is to solve the problem that the existing natural gas cylinder valves are cumbersome to operate, and users only close the valves when changing gas cylinders, leaving them in the open state at other times, which poses certain safety hazards. Therefore, a combination valve for compressed natural gas cylinder vehicles is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a combination valve for compressed natural gas cylinder vehicles, including a valve body, a manual shut-off component provided on one side of the valve body, a solenoid valve switch component provided on the other side of the valve body, a temperature protection component provided on one side of the valve body, a pressure protection component provided on the other side of the valve body, and a flow limiting buffer component provided at the lower end of the valve body.

[0006] The temperature protection component includes a temperature protection device body, which is installed on one side of the valve body. A fusible alloy is installed inside the temperature protection device body. A fourth valve core is provided at one end of the fusible alloy. One end of the fourth valve core is embedded inside the valve body and fitted with two sixth O-rings. A plug is installed at the other end of the fourth valve core.

[0007] The pressure protection assembly includes a vent hole located on one side of the valve body. A fastening plug is embedded and threaded into the vent hole. A sealing gasket is provided on one side of the fastening plug and inside the vent hole. A clamping ring is installed inside the sealing gasket. A rupture disc is embedded and fixedly connected inside the clamping ring.

[0008] Preferably, the manual shut-off assembly includes an adjusting handwheel and a manual adjusting shaft. The manual adjusting shaft is located inside one side of the valve body. The adjusting handwheel is sleeved on one end of the manual adjusting shaft. A fastening screw is installed between the adjusting handwheel and the manual adjusting shaft. A first valve core is provided at one end of the manual adjusting shaft. An adjusting valve seat is sleeved between the manual adjusting shaft and the first valve core. A valve port screw is embedded and threadedly connected to one end of the first valve core.

[0009] Preferably, an adjusting bearing sealing gasket is provided between the manual adjusting shaft and the first valve core, and a valve port sealing gasket is provided between the first valve core and the valve port screw.

[0010] Preferably, the solenoid valve switching assembly includes a second valve core and a fixing sleeve. The fixing sleeve is located on one side of the valve body, and the second valve core is located inside the fixing sleeve. One end of the second valve core is provided with a fine iron core. A first spring is provided between the second valve core and the fine iron core. One end of the fine iron core is fitted with a fastening nut. A nut cap is fitted and threaded onto the surface of the fastening nut. A sleeve seat is fitted on the second valve core and the second valve core. The other end of the second valve core is provided with a small valve port rubber. A third valve core is provided on one side of the small valve port rubber. A connecting sleeve is fitted between the second valve core and the third valve core. A coil is provided inside the fixing sleeve.

[0011] Preferably, a first O-ring and a sealing thrust ring are fitted and embedded on the surface of the iron core, a second O-ring is provided on one side of the nut cap, a third O-ring is provided between the fixing sleeve and the valve body, a wave-shaped gasket is provided on the sleeve seat, a fourth O-ring is fitted and embedded on the surface of the sleeve seat near one end, and a fifth O-ring is fitted and embedded on the surface of the third valve core.

[0012] Preferably, the flow limiting buffer assembly includes a flow limiting device body, which is installed at the bottom of the valve body. A second spring is installed inside the flow limiting device body. One end of the second spring is fixedly connected to a flow limiting plate, and a retaining ring for holes is tightly attached to the other side of the flow limiting plate.

[0013] Preferably, a bottle neck sealing sleeve is installed on the surface of the valve body and at the flow limiting buffer assembly.

[0014] Preferably, a seventh O-ring is provided between the regulating valve seat and the valve body, and an eighth O-ring is provided between the regulating handwheel and the valve body.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by installing this combined gas valve on the compressed natural gas cylinder, the inconvenience of operating the natural gas energy vehicle gas storage cylinder is effectively solved. The solenoid valve switch assembly is controlled by the vehicle ECU computer board, and the pipeline gas supply is automatically shut off when the power is cut off, avoiding safety hazards caused by leakage or other factors.

[0017] 2. In this utility model, by setting a double-safety temperature and pressure relief device on the valve body, the gas in the gas storage cylinder is made safer to use. When the temperature exceeds the design value, the fusible alloy in the temperature relief device melts and the gas in the cylinder is quickly released. When the pressure exceeds the set value, the safety plate in the relief valve opens and the relief valve opens, realizing emergency depressurization of the gas in the gas storage cylinder. Attached Figure Description

[0018] Figure 1 This utility model provides a three-dimensional view of the overall structure of the combined valve for compressed natural gas cylinder vehicles;

[0019] Figure 2 This utility model presents an overall structural cross-sectional view of a combined valve for a compressed natural gas cylinder vehicle.

[0020] Legend: 1. Valve body; 2. Manual shut-off assembly; 201. Adjusting handwheel; 202. Manual adjusting shaft; 203. Fastening screw; 204. Adjusting valve seat; 205. Adjusting bearing gasket; 206. First valve core; 207. Valve port sealing gasket; 208. Valve port screw; 3. Solenoid valve switch assembly; 301. Second valve core; 302. First spring; 303. Precision iron core; 304. First O-ring; 305. Sealing thrust ring; 306. Fastening nut; 307. Nut cap; 308. Second O-ring; 309. Third O-ring; 310. Wave gasket; 311. Sleeve seat; 312. Fourth O-ring; 313. Small 314. Valve port rubber; 315. Third valve core; 316. Fifth O-ring; 317. Connecting sleeve; 318. Fixing sleeve; 319. Coil; 4. Flow limiting buffer assembly; 401. Flow limiting device body; 402. Second spring; 403. Flow limiting plate; 404. Hole retaining ring; 5. Temperature protection assembly; 501. Temperature protection device body; 502. Fusible alloy; 503. Fourth valve core; 504. Sixth O-ring; 505. Plug core; 6. Pressure protection assembly; 601. Vent hole; 602. Fastening plug; 603. Clamping ring; 604. Rupture disc; 605. Sealing gasket; 7. Bottle mouth sealing sleeve; 8. Seventh O-ring; 9. Eighth O-ring. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, such as Figure 1-2 As shown, this utility model provides a combination valve for compressed natural gas cylinder vehicles, including a valve body 1. A manual shut-off component 2 is provided on one side of the valve body 1, which can achieve the effect of manual shut-off. A solenoid valve switch component 3 is provided on the other side of the valve body 1.

[0024] The temperature protection component 5 includes a temperature protection device body 501, which is installed on one side of the valve body 1. A fusible alloy 502 is installed inside the temperature protection device body 501. A fourth valve core 503 is provided at one end of the fusible alloy 502. One end of the fourth valve core 503 is embedded inside the valve body 1 and is fitted with two sixth O-rings 504. A plug core 505 is installed at the other end of the fourth valve core 503. This can achieve the effect of melting the fusible alloy 502 in the temperature release device when the temperature exceeds the design value, and quickly releasing the gas from the gas cylinder.

[0025] Pressure protection component 6 includes a vent 601 located on one side of valve body 1. A fastening plug 602 is threadedly embedded inside the vent 601. A sealing gasket 605 is located on one side of the fastening plug 602 and inside the vent 601. A clamping ring 603 is installed inside the sealing gasket 605. A rupture disc 604 is embedded and fixedly connected inside the clamping ring 603. This allows the safety disc inside the relief valve to open when the pressure exceeds a set value, thus opening the relief valve and achieving emergency pressure relief of the gas in the gas cylinder. It also allows the solenoid valve switch component 3 to be controlled by the vehicle's ECU computer board. The system controls and automatically shuts off the gas supply in case of power failure, preventing safety hazards caused by leaks or other factors. A temperature protection component 5 is provided on one side of the valve body 1, which can melt the fusible alloy 502 in the temperature release device when the temperature exceeds the design value, allowing the gas in the cylinder to be released quickly. A pressure protection component 6 is provided on the other side of the valve body 1, which can open the safety plate in the release valve when the pressure exceeds the set value, allowing the release valve to open and achieve emergency depressurization of the gas in the storage cylinder. A flow limiting buffer component 4 is provided at the lower end of the valve body 1, which can limit and buffer the flow of natural gas.

[0026] Example 2, as Figure 1-2As shown, the manual shut-off assembly 2 includes an adjusting handwheel 201 and a manual adjusting shaft 202. The manual adjusting shaft 202 is located inside one side of the valve body 1. The adjusting handwheel 201 is sleeved on one end of the manual adjusting shaft 202. A fastening screw 203 is installed between the adjusting handwheel 201 and the manual adjusting shaft 202. A first valve core 206 is provided at one end of the manual adjusting shaft 202. An adjusting valve seat 204 is sleeved between the manual adjusting shaft 202 and the first valve core 206. A valve port screw 208 is embedded and threadedly connected to one end of the first valve core 206, which can achieve the effect of manually rotating the adjusting handwheel 201 to adjust the gas flow rate. An adjusting bearing sealing gasket 205 is provided between the manual adjusting shaft 202 and the first valve core 206. A valve port sealing gasket 207 is provided between the valve core 206 and the valve port screw 208, which can seal the internal components of the manual shut-off assembly 2 and the valve body 1. The solenoid valve switching assembly 3 includes a second valve core 301 and a fixing sleeve 317. The fixing sleeve 317 is located on one side of the valve body 1, and the second valve core 301 is located inside the fixing sleeve 317. One end of the second valve core 301 is provided with a fine iron core 303. A first spring 302 is provided between the second valve core 301 and the fine iron core 303. A fastening nut 306 is sleeved on one end of the fine iron core 303. A nut cap 307 is sleeved and threaded onto the surface of the fastening nut 306. A sleeve seat 311 is sleeved on the second valve core 301. The other end of 01 is provided with a small valve port rubber 313, and a third valve core 314 is provided on one side of the small valve port rubber 313. A connecting sleeve 316 is sleeved between the second valve core 301 and the third valve core 314. A coil 318 is provided inside the fixed sleeve 317, which can enable the solenoid valve switching assembly 3 to be controlled by the car ECU computer board. When the power is cut off, the gas supply to the pipeline will be automatically shut off to avoid safety hazards caused by leakage or other factors. A first O-ring 304 and a sealing thrust ring 305 are sleeved and embedded on the surface of the fine iron core 303. A second O-ring 308 is provided on one side of the nut cap 307. A third O-ring 309 is provided between the fixed sleeve 317 and the valve body 1. A wave gasket 310 is provided on the sleeve seat 311. A fourth O-ring 312 is fitted and embedded near one end of the valve body 1, and a fifth O-ring 315 is fitted and embedded on the surface of the third valve core 314. This can achieve the effect of sealing between the internal components of the solenoid valve switch assembly 3 and between the solenoid valve core 3 and the valve body 1. The flow limiting buffer assembly 4 includes a flow limiting device body 401, which is installed at the bottom of the valve body 1. A second spring 402 is installed inside the flow limiting device body 401. One end of the second spring 402 is fixedly connected to a flow limiting plate 403, and the other side of the flow limiting plate 403 is tightly attached to a retaining ring 404 for the hole. This can achieve the effect of flow limiting and buffering the airflow. A bottle mouth sealing sleeve 7 is installed on the surface of the valve body 1 and at the flow limiting buffer assembly 4. This can achieve the effect of sealing the bottle mouth.By adjusting the seventh O-ring 8 between the valve seat 204 and the valve body 1, and the eighth O-ring 9 between the handwheel 201 and the valve body 1, the seventh O-ring 8 can seal the space between the valve seat 204 and the valve body 1, while the eighth O-ring 9 can seal the space between the handwheel 201 and the valve body 1.

[0027] Working principle: The manual shut-off component 2, solenoid valve switch component 3, temperature protection component 5, and pressure protection component 6 are installed on the four sides of the valve body 1 respectively. The solenoid valve switch component 3 can be controlled by the car ECU computer board. When the power is cut off, the gas supply to the pipeline is automatically shut off to avoid safety hazards caused by leakage or other factors. At the same time, when the temperature of the valve body 1 exceeds the design value, the fusible alloy 502 in the temperature relief device melts, and the gas in the cylinder is quickly released. When the pressure exceeds the set value, the rupture disc 604 in the relief valve opens, and the relief valve opens to realize emergency depressurization of the gas in the storage cylinder. Meanwhile, the manual shut-off component 2 can manually control and adjust the valve body 1, and the flow limiting buffer component 4 can buffer and limit the flow of natural gas.

[0028] The wiring diagram of valve body 1 in this utility model is common knowledge in the field, and its working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of valve body 1 will not be explained in detail.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A combination valve for a compressed natural gas cylinder vehicle, comprising a valve body (1), characterized in that: A manual shut-off assembly (2) is provided on one side of the valve body (1), a solenoid valve switch assembly (3) is provided on the other side of the valve body (1), a temperature protection assembly (5) is provided on one side of the valve body (1), a pressure protection assembly (6) is provided on the other side of the valve body (1), and a flow limiting buffer assembly (4) is provided at the lower end of the valve body (1); The temperature protection component (5) includes a temperature protection device body (501), which is installed on one side of the valve body (1). A fusible alloy (502) is installed inside the temperature protection device body (501). A fourth valve core (503) is provided at one end of the fusible alloy (502). One end of the fourth valve core (503) is embedded inside the valve body (1) and fitted with two sixth O-rings (504). A plug core (505) is installed at the other end of the fourth valve core (503). The pressure protection assembly (6) includes a vent (601), which is located on one side of the valve body (1). A fastening plug (602) is embedded and threaded inside the vent (601). A sealing gasket (605) is provided on one side of the fastening plug (602) and inside the vent (601). A clamping ring (603) is installed inside the sealing gasket (605). A rupture disc (604) is embedded and fixedly connected inside the clamping ring (603).

2. The combination valve for compressed natural gas cylinder vehicles according to claim 1, characterized in that: The manual shut-off assembly (2) includes an adjusting handwheel (201) and a manual adjusting shaft (202). The manual adjusting shaft (202) is located inside one side of the valve body (1). The adjusting handwheel (201) is sleeved on one end of the manual adjusting shaft (202). A fastening screw (203) is installed between the adjusting handwheel (201) and the manual adjusting shaft (202). A first valve core (206) is provided at one end of the manual adjusting shaft (202). An adjusting valve seat (204) is sleeved between the manual adjusting shaft (202) and the first valve core (206). A valve port screw (208) is embedded and threadedly connected to one end of the first valve core (206).

3. The combination valve for compressed natural gas cylinder vehicles according to claim 2, characterized in that: An adjusting bearing gasket (205) is provided between the manual adjusting shaft (202) and the first valve core (206), and a valve port gasket (207) is provided between the first valve core (206) and the valve port screw (208).

4. The combination valve for compressed natural gas cylinder vehicles according to claim 1, characterized in that: The solenoid valve switch assembly (3) includes a second valve core (301) and a fixing sleeve (317). The fixing sleeve (317) is located on one side of the valve body (1). The second valve core (301) is located inside the fixing sleeve (317). One end of the second valve core (301) is provided with a fine iron core (303). A first spring (302) is provided between the second valve core (301) and the fine iron core (303). One end of the fine iron core (303) is fitted with a fastening nut (306). A nut cap (307) is threaded onto the surface of the second valve core (301). A sleeve seat (311) is fitted onto the second valve core (301). A small valve port rubber (313) is provided at the other end of the second valve core (301). A third valve core (314) is provided on one side of the small valve port rubber (313). A connecting sleeve (316) is fitted between the second valve core (301) and the third valve core (314). A coil (318) is provided inside the fixed sleeve (317).

5. The combination valve for compressed natural gas cylinder vehicles according to claim 4, characterized in that: The surface of the fine iron core (303) is fitted with and embedded with a first O-ring (304) and a sealing thrust ring (305). A second O-ring (308) is provided on one side of the nut cap (307). A third O-ring (309) is provided between the fixing sleeve (317) and the valve body (1). A wave-shaped gasket (310) is provided on the sleeve seat (311). A fourth O-ring (312) is fitted with and embedded on the surface of the sleeve seat (311) and near one end. A fifth O-ring (315) is fitted with and embedded on the surface of the third valve core (314).

6. The combination valve for compressed natural gas cylinder vehicles according to claim 1, characterized in that: The flow limiting buffer assembly (4) includes a flow limiting device body (401), which is installed at the bottom of the valve body (1). A second spring (402) is installed inside the flow limiting device body (401). One end of the second spring (402) is fixedly connected to a flow limiting plate (403), and the other side of the flow limiting plate (403) is tightly attached to a retaining ring (404) for holes.

7. The combination valve for compressed natural gas cylinder vehicles according to claim 1, characterized in that: A bottle mouth sealing sleeve (7) is installed on the surface of the valve body (1) and at the flow limiting buffer assembly (4).

8. The combination valve for compressed natural gas cylinder vehicles according to claim 2, characterized in that: A seventh O-ring (8) is provided between the regulating valve seat (204) and the valve body (1), and an eighth O-ring (9) is provided between the regulating handwheel (201) and the valve body (1).

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