Dual control combination cylinder valve

Abstract

The utility model discloses a double -controlled combined gas cylinder valve, including valve seat, electric control valve and manual stop valve, one side end of valve seat installs gas cylinder, and the other side end of valve seat is equipped with emergency relief port, be equipped with first installation groove and second installation groove on valve seat, electric control valve installs at first installation groove, and manual stop valve installs at second installation groove, the first exhaust passage of valve seat inside is equipped with the second exhaust passage, and the relief passage of mutual through, emergency relief port connects relief passage, first exhaust passage and second exhaust passage with emergency relief port, first installation groove, second installation groove are communicated. The utility model changes the current only rely on electric control valve or manual stop valve control gas cylinder valve's technology, realized double -controlled valve control technology, guaranteed gas cylinder use state and the security of trouble state, can also avoid the waste of gas cylinder medium.

Description

Technical Field

[0001] This utility model relates to the field of valves installed on gas cylinders, and in particular to a dual-control combined gas cylinder valve. Background Technology

[0002] Initially, most high-pressure gas cylinder valves on the market were manually controlled. While manual control saved costs, it was inconvenient to operate. When the cylinder contained flammable, explosive, or other hazardous gases, improper manual operation could compromise safety. They were gradually replaced by electrically controlled valves. However, electrically controlled valves are less stable than manually operated valves and have a higher failure rate. When the cylinder is full of high-pressure media, if the electrically controlled valve fails, all the gas in the cylinder must be vented through the emergency vent before the valve can be disassembled, repaired, or replaced. This process is cumbersome, inefficient, and results in the waste of the stored gas. Summary of the Invention

[0003] The purpose of this invention is to provide a combined gas cylinder valve with dual control.

[0004] This invention addresses the problems of inconvenient operation and low safety performance when only manual control valves are installed on existing gas cylinders, and the high failure rate, inconvenient disassembly and maintenance, and serious waste of medium when only electric valves are installed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This utility model includes a valve seat, an electrically controlled valve, and a manually operated shut-off valve; a gas cylinder is installed on one side of the valve seat, and an emergency release port is provided on the other side of the valve seat; a first mounting groove and a second mounting groove are provided on the valve seat; the electrically controlled valve is installed in the first mounting groove, and the manually operated shut-off valve is installed in the second mounting groove; a first exhaust channel, a second exhaust channel, and a release channel are provided inside the valve seat, and the emergency release port is connected to the release channel provided inside the valve seat; the first exhaust channel and the second exhaust channel are connected to the emergency release port, the first mounting groove, and the second mounting groove; the first exhaust channel connects the internal space of the gas cylinder with the second mounting groove, and the second exhaust channel connects the first mounting groove and the second mounting groove.

[0006] Furthermore, the electrically controlled valve includes a guide sleeve, a moving iron core, a stationary iron core, a coil, and a coil fixing nut; the guide sleeve is installed in the first mounting groove and extends outward; the outwardly extending part of the guide sleeve is fitted with a coil; the coil is fixedly installed on the valve seat; the coil fixing nut is installed on the top of the coil; a through hole is provided on the side wall of the bottom end of the guide sleeve, the second exhaust channel communicates with the through hole, and an annular groove is provided at the bottom end of the guide sleeve, the diameter of the annular groove being larger than the diameter of the through hole in the middle of the guide sleeve.

[0007] Furthermore, the diameters of the moving iron core and the stationary iron core are adapted to the diameter of the through hole in the middle of the guide sleeve and are installed sequentially inside the guide sleeve. The moving iron core is located near the valve seat, and the stationary iron core is located near the coil fixing nut. The stationary iron core is threaded to the inner wall of the guide sleeve. The moving iron core is embedded in the guide sleeve and moves within the guide sleeve.

[0008] Furthermore, a first sealing ring is installed between the guide sleeve and the first mounting groove, and a second sealing ring is installed between the stationary iron core and the first mounting groove.

[0009] Furthermore, the manual shut-off valve includes a shut-off valve sleeve and a shut-off valve stem. The shut-off valve sleeve is installed in the second mounting groove, and the shut-off valve stem is threadedly connected to the inner wall of the shut-off valve sleeve. A plug is installed at the front end of the shut-off valve stem, and the plug extends to the first exhaust channel.

[0010] Furthermore, a third sealing ring is installed between the stop valve sleeve and the second mounting groove, and a fourth sealing ring is provided between the stop valve stem and the stop valve sleeve.

[0011] Furthermore, the valve seat is also provided with a transmission channel, which is connected to the first mounting groove.

[0012] Furthermore, the valve seat has an extension connecting section on the side end where the gas cylinder is mounted; the first mounting groove and the second mounting groove are perpendicular to the extension direction of the extension connecting section of the valve seat.

[0013] The beneficial effects of this utility model are: 1. This utility model adopts a combination of manual shut-off valve and electric control valve for installation and control, which provides dual protection for the control of all valves of the gas cylinder, and has excellent safety and stability.

[0014] 2. The valve status can be switched as needed. If the electric control valve fails during use, simply lock the manual shut-off valve, open the emergency vent to release the remaining gas in the flow channel, and the electric control valve can be disassembled and replaced. It is not necessary to completely empty the gas cylinder, which greatly saves maintenance time and the high cost caused by gas loss. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the manual shut-off valve opening and the electrically controlled valve closing of this utility model.

[0017] Figure 3 This is a schematic diagram of the opening of the manual shut-off valve and the opening of the electrically controlled valve of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the manual shut-off valve and the electrically controlled valve of this utility model.

[0019] Figure 5 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Valve seat; 2. Relief channel; 3. Emergency relief port; 4. First sealing ring; 5. Guide sleeve; 6. Moving iron core; 7. Stationary iron core; 8. Electrically controlled valve; 9. Coil fixing nut; 10. Coil; 11. Second sealing ring; 12. Manual shut-off valve; 13. Shut-off valve sleeve; 14. Shut-off valve stem; 15. Third sealing ring; 16. Plug; 17. First exhaust channel; 18. Second exhaust channel; 19. Transmission channel; 20. Through hole; 21. Annular groove; 22. Gas cylinder; 1-1. Extension connection section; 5-1. Intermediate through hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, this utility model relates to the field of gas cylinder valves, specifically a combined gas cylinder valve structure with an electrically controlled valve and a manually controlled shut-off valve, realizing dual operation of electric and manual control and ensuring valve safety.

[0023] This utility model includes a valve seat 1, an electrically controlled valve 8, and a manually operated shut-off valve 12. A gas cylinder 22 is mounted on one side of the valve seat 1, and an emergency release port 3 is provided on the other side of the valve seat 1. The emergency release port 3 connects to a release channel 2 inside the valve seat 1. The valve seat 1 has a first mounting groove and a second mounting groove. An extension connecting section 1-1 is provided on the side of the valve seat 1 where the gas cylinder 22 is mounted; the first mounting groove and the second mounting groove are perpendicular to the extension direction of the extension connecting section 1-1 of the valve seat 1, and the first mounting groove and the second mounting groove are also perpendicular to the extension direction of the release channel 2. The electrically controlled valve 8 is installed in the first mounting groove, and the manually operated shut-off valve 12 is installed in the second mounting groove. The valve seat 1 has a through first exhaust channel 17, a second exhaust channel 18, and a release channel 2; the first exhaust channel 17 and the second exhaust channel 18 are connected to the emergency release port 3, the first mounting groove, and the second mounting groove. The first exhaust channel 17 connects the internal space of the gas cylinder to the second mounting groove, and the second exhaust channel 18 connects the first mounting groove and the second mounting groove. Three emergency vents are equipped with blocking structures (not shown in the figure). The blocking structures are only removed in emergency situations or special circumstances to allow for venting.

[0024] The electrically controlled valve 8 includes a guide sleeve 5, a moving iron core 6, a stationary iron core 7, a coil 10, and a coil fixing nut 9. The guide sleeve 5 is installed in the first mounting groove and extends outwards, and is fixed to the first mounting groove by a threaded connection. The coil 10 is fitted onto the outer side of the outwardly extending portion of the guide sleeve 5. The coil 10 is fixedly installed on the valve seat 1; the coil fixing nut 9 is installed on the top of the coil 10. A through hole 20 is provided on the side wall at the bottom end of the guide sleeve 5, and the second exhaust channel 18 communicates with the through hole 20. An annular groove 21 is provided at the bottom end of the guide sleeve 5, and the diameter of the annular groove 21 is larger than the diameter of the through hole 5-1 in the middle of the guide sleeve 5. Figure 5 As shown, the second exhaust channel 18 is always connected to the venting channel 2 through the through hole 20 and the annular groove 21.

[0025] like Figure 1 As shown, the diameters of the moving iron core 6 and the stationary iron core 7 are adapted to the diameter of the through hole 5-1 in the middle of the guide sleeve 5 and are installed sequentially inside the guide sleeve 5. The moving iron core 6 is located near the valve seat 1, and the stationary iron core 5 is located near the coil fixing nut 9. The stationary iron core 7 is threaded to the inner wall of the guide sleeve 5. The moving iron core 6 is embedded in the guide sleeve 5 and moves within the guide sleeve 5. There is sufficient displacement distance within the guide sleeve 5. The bottom of the guide sleeve 5 has a limit structure, so the moving iron core 6 will not slide down indefinitely. Although the second exhaust channel 18, through hole 20, annular groove 21 and venting channel 2 are always in a continuous state, due to the setting of the block structure, the gas will not be discharged. Figure 1 , 5 As shown. The valve seat 1 also has a transmission channel 19 inside, which communicates with the first mounting slot. The transmission channel 19 serves as an external interface, connecting to the downstream gas supply system to realize the transmission of gas from the cylinder.

[0026] When the solenoid valve 8 is not energized, the stationary iron core 7 is not magnetized and therefore lacks magnetism, preventing the moving iron core 6 from being attracted. Due to its own gravity, the moving iron core 6 moves to the bottom of the guide sleeve 5, specifically at the junction of the transmission channel 19 and the guide sleeve 5. The transmission channel 19 is not connected to the second exhaust channel 18, thus achieving the normal closing function of the valve. The high-pressure gas inside the gas cylinder 22 is cut off by the solenoid valve 8, and there is no gas medium output from the transmission channel 19. Conversely, when the solenoid valve 8 is energized, the stationary iron core 7 is magnetized, attracting the moving iron core 6. The moving iron core 6, under the electromagnetic force of the stationary iron core 7, moves along the inner wall of the guide sleeve 5, disengaging from the flow channel opening of the second exhaust channel 18 and the transmission channel 19, thus connecting the transmission channel 19 and the second exhaust channel 18. With the electric control valve 8 open and the manual shut-off valve 12 also open, the medium in the gas cylinder 22 passes through the second exhaust channel 18 to the transmission connection channel 19 and is supplied to the downstream gas system. The above are the two states of the electric control valve 8 being normally closed and normally open. The manual shut-off valve 12 is in the fully open state.

[0027] A first sealing ring 4 is installed between the guide sleeve 5 and the first mounting groove, and a second sealing ring 11 is installed between the stationary iron core 7 and the first mounting groove. The first sealing ring 4 and the second sealing ring 11 ensure that internal gas will not escape from the gaps, thus guaranteeing the airtightness of the valve during normal operation.

[0028] The manual shut-off valve 12 includes a shut-off valve sleeve 13 and a shut-off valve stem 14. The shut-off valve sleeve 13 is installed in the second mounting groove. The shut-off valve stem 14 is threadedly connected to the inner wall of the shut-off valve sleeve 13. A plug 16 is installed at the front end of the shut-off valve stem 14, and the plug 16 extends to the first exhaust channel 17.

[0029] A third sealing ring 15 is installed between the second mounting groove of the stop valve sleeve 13, and a fourth sealing ring is provided between the stop valve stem 14 and the stop valve sleeve 13.

[0030] The manual shut-off valve 12 operates by manually turning the valve stem 14. Turning it clockwise moves the valve stem 14 downwards within the threaded hole of the valve sleeve 13, contacting the flow channel between the first exhaust channel 17 and the second exhaust channel 18 within the valve seat 1, at which point the manual shut-off valve 12 is in the tightened closed state. Turning it counterclockwise moves the valve stem 14 upwards within the threaded hole of the valve sleeve 13, disengaging from the flow channel between the first exhaust channel 17 and the second exhaust channel 18 within the valve seat 1, at which point the manual shut-off valve 12 is in the open state.

[0031] If the solenoid valve 8 fails to close due to power failure during use, it is determined that the solenoid valve 8 has malfunctioned. In this case, the manual shut-off valve 12 can be closed by turning the valve stem 14 clockwise to isolate the high-pressure gas medium inside the gas cylinder. This prevents the gas medium from flowing into the second exhaust channel 18, allowing the valve to enter maintenance mode. After switching to maintenance mode, the residual gas inside the second exhaust channel 18, exhaust channel 2, and transmission channel 19 can be discharged by opening the emergency vent 3. After venting is complete, the solenoid valve 8 can be directly removed for inspection and replacement. After maintenance, keep the solenoid valve 8 closed and open the manual shut-off valve 12, returning the entire valve to its initial normal closed state.

[0032] If the electrically controlled valve 8 cannot be opened when energized, other tools are needed. First, close the manual shut-off valve 12 to isolate the high-pressure gas medium inside the gas cylinder. Then, insert the tool into the transmission connection channel 19 (this operation requires the transmission connection channel 19 to be separated from the downstream gas system), press against the moving iron core 6, and move it upward. At this time, the flow passage between the second exhaust channel 18 and the transmission channel 19 is connected. Open the emergency vent 3, and the residual gas inside the second exhaust channel 18, vent channel 2, and transmission channel 19 can be discharged.

[0033] As shown in Figure 2, this is the normal closed state of the valves, i.e., the manual shut-off valve 12 is open and the electrically controlled valve 8 is closed. The manual shut-off valve 12 is generally in the open state. The valve stem 14 of the shut-off valve is in the upward position on the screw hole of the shut-off valve sleeve 13. At this time, the flow passage between the first exhaust channel 17 and the second exhaust channel 18 is open, and the gas in the gas cylinder 22 can flow into the second exhaust channel 18. The electrically controlled valve 8 is in the de-energized state, and the moving iron core 6 is located at the flow passage between the second exhaust channel 18 and the transmission channel 19, cutting off the connection between the second exhaust channel 18 and the transmission channel 19, thus realizing the normal closing function of the valves.

[0034] As shown in Figure 3, this represents the normal operating state of the valves, with the manual shut-off valve 12 open and the electrically controlled valve 8 open. The manual shut-off valve 12 remains open normally. The electrically controlled valve 8 is energized, and the moving iron core 6, under the electromagnetic force of the stationary iron core 7, moves along the inner wall of the guide sleeve 5, disengaging from the flow channel between the second exhaust channel 18 and the transmission channel 19 within the valve seat 1. The electrically controlled valve 8 is then opened, and the medium in the gas cylinder 19 is supplied to the downstream gas system through the first exhaust channel 17, the first exhaust channel 18, and the transmission channel 19.

[0035] As shown in Figure 4, this is the maintenance state of the valves, i.e., the manual shut-off valve 12 is closed and the solenoid valve 8 is closed. This state generally indicates that the solenoid valve 8 has failed and needs to be disassembled for maintenance. The manual shut-off valve 12 is closed manually, isolating the gas in the gas cylinder 22 from the second exhaust channel 18. Then, the plug structure at the emergency vent 3 is opened to release the remaining gas in the second exhaust channel 18 and the vent channel 2. After venting, the solenoid valve 8 can be disassembled and repaired. After maintenance, the solenoid valve 8 is kept closed, and the manual shut-off valve 12 is opened manually, restoring the valves to their normal closed state (see attached figure). Figure 2 state).

Claims

1. A dual-control combined gas cylinder valve, comprising a valve seat (1), an electrically controlled valve (8), and a manually operated shut-off valve (12); characterized in that... A gas cylinder is installed on one side of the valve seat (1), and an emergency release port (3) is provided on the other side of the valve seat (1); a first mounting groove and a second mounting groove are provided on the valve seat (1); the electric control valve (8) is installed in the first mounting groove, and the manual shut-off valve (12) is installed in the second mounting groove; the valve seat (1) is provided with a first exhaust channel (17), a second exhaust channel (18), and a release channel (2) that are interconnected inside, and the emergency release port (3) is connected to the release channel (2) provided inside the valve seat (1); the first exhaust channel (17) and the second exhaust channel (18) are connected to the emergency release port (2), the first mounting groove, and the second mounting groove; the first exhaust channel (17) connects the internal space of the gas cylinder with the second mounting groove, and the second exhaust channel (18) connects the first mounting groove and the second mounting groove.

2. The dual-control combined gas cylinder valve according to claim 1, characterized in that... The electric control valve (1) includes a guide sleeve (5), a moving iron core (6), a stationary iron core (7), a coil (10), and a coil fixing nut (9); the guide sleeve (5) is installed in the first mounting groove and extends outward; the coil (10) is sleeved on the outwardly extending part of the guide sleeve (5); the coil (10) is fixedly installed on the valve seat (1); the coil fixing nut (9) is installed on the top of the coil (10); a through hole (20) is provided on the side wall of the bottom end of the guide sleeve (5), and the second exhaust channel (18) communicates with the through hole (20); an annular groove (21) is provided at the bottom end of the guide sleeve (5), and the diameter of the annular groove (21) is larger than the diameter of the through hole (5-1) in the middle of the guide sleeve (5).

3. A dual-control combined gas cylinder valve according to claim 2, characterized in that... The diameters of the moving iron core (6) and the stationary iron core (7) are adapted to the diameter of the through hole (5-1) in the middle of the guide sleeve and are installed in the guide sleeve (5) in sequence. The moving iron core (6) is located near the valve seat (1), and the stationary iron core (7) is located near the coil fixing nut (9). The stationary iron core (7) is threaded to the inner wall of the guide sleeve (5). The moving iron core (6) is embedded in the guide sleeve 5 and moves within the guide sleeve 5.

4. A dual-control combined gas cylinder valve according to claim 2, characterized in that... A first sealing ring (4) is installed between the guide sleeve (5) and the first mounting groove, and a second sealing ring (11) is installed between the stationary iron core (7) and the first mounting groove.

5. A dual-control combined gas cylinder valve according to claim 1, characterized in that... The manual shut-off valve (12) includes a shut-off valve sleeve (13) and a shut-off valve stem (14). The shut-off valve sleeve (13) is installed in the second mounting groove. The shut-off valve stem (14) is threaded to the inner wall of the shut-off valve sleeve (13). A plug (16) is installed at the front end of the shut-off valve stem (14). The plug (16) extends to the first exhaust channel (17).

6. A dual-control combined gas cylinder valve according to claim 5, characterized in that... A third sealing ring (15) is installed between the stop valve sleeve (13) and the second mounting groove, and a fourth sealing ring is provided between the stop valve stem (14) and the stop valve sleeve (13).

7. A dual-control combined gas cylinder valve according to claim 1, characterized in that... The valve seat (1) is also provided with a transmission channel (19), which is connected to the first mounting groove.

8. A dual-control combined gas cylinder valve according to claim 1, characterized in that... The valve seat (1) has an extension connecting section (1-1) on the side end where the gas cylinder is installed; the first mounting groove and the second mounting groove are perpendicular to the extension direction of the extension connecting section (1-1) of the valve seat (1).

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