Dual-control combined gas cylinder valve

Abstract

The invention discloses a dual-control combined gas cylinder valve which comprises a valve seat, an electric control valve and a manual stop valve. One side end of the valve seat is provided with a gas cylinder, and the other side end of the valve seat is provided with an emergency discharge port; a first mounting groove and a second mounting groove are formed in the valve seat; the electric control valve is mounted at the first mounting groove, and the manual stop valve is mounted at the second mounting groove; a first exhaust passage, a second exhaust passage and a discharge passage which are communicated with one another are arranged in the valve seat, and the emergency discharge port is connected with the discharge passage; and the first exhaust channel and the second exhaust channel are communicated with the emergency release port, the first mounting groove and the second mounting groove. According to the invention, the current technology that the valve of the gas cylinder is controlled only by an electric control valve or a manual stop valve is changed, the dual valve control technology is realized, the safety of the use state and the fault state of the gas cylinder is ensured, and the waste of a medium in the gas cylinder can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valve installed on gas cylinder, in particular to a double control combined gas cylinder valve. BACKGROUND

[0002] The high-pressure gas cylinder valve on the market is initially mainly controlled manually, manual control can save cost, but the operation is not convenient, when the bottle stores flammable and explosive and other dangerous gas medium, the safety cannot be guaranteed under the condition of improper manual operation, then gradually replaced by electric control valve, but the stability of electric control valve is not as good as manual stop valve, the failure rate of electric control valve is higher, when the gas cylinder is filled with high-pressure medium, once the electric control valve fails, the gas in the gas cylinder needs to be emptied from the emergency relief port, so that the electric control valve can be disassembled, repaired and replaced, which will cause the maintenance process to be complicated, low efficiency and serious waste of medium stored in the bottle. SUMMARY

[0003] The purpose of the present application is to provide a double control combined gas cylinder valve.

[0004] The present application solves the problems of existing gas cylinder only installing manual control valve, inconvenient operation and low safety performance, only installing electric valve, high failure rate, inconvenient disassembly and repair and serious medium waste.

[0005] The technical scheme adopted by the present application to solve its technical problems is: the present application comprises a valve seat, an electric control valve and a manual stop valve; one side end of the valve seat is installed with a gas cylinder, the other side end of the valve seat is provided with an emergency relief port; the valve seat is provided with a first installation groove and a second installation groove; the electric control valve is installed at the first installation groove, and the manual stop valve is installed at the second installation groove; the valve seat is internally provided with a first exhaust passage, a second exhaust passage and a relief passage which are through; the emergency relief port is connected with the relief passage provided in the valve seat; the first exhaust passage and the second exhaust passage are communicated with the emergency relief port, the first installation groove, the second installation groove, the first exhaust passage is communicated with the internal space of the gas cylinder and the second installation groove, and the second exhaust passage is communicated with the first installation groove and the second installation groove.

[0006] Further, the electric control valve comprises a guide sleeve, a moving iron core, a static iron core, a coil and a coil fixing nut; the guide sleeve is installed in the first installation groove and extends outward; the part of the guide sleeve extending outward is sleeved with the coil; the coil is fixedly installed on the valve seat; the coil fixing nut is installed at the top end of the coil; the side wall of the bottom end of the guide sleeve is provided with a through hole which is through; the second exhaust passage is communicated with the through hole; the bottom end of the guide sleeve is provided with an annular groove, and the diameter of the annular groove is greater than the diameter of the through hole in the middle of the guide sleeve.

[0007] Further, the diameters of the moving iron core and the static iron core are adapted to the diameter of the middle through hole of the guide sleeve and are sequentially installed in the guide sleeve, the moving iron core is located close to the valve seat, and the static iron core is located close to the coil fixing nut; the static iron core is in threaded connection with the inner wall of the guide sleeve; and the moving iron core is embedded in the guide sleeve and moves in the guide sleeve.

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

[0009] Further, the manual stop valve comprises a stop valve sleeve and a stop valve stem, the stop valve sleeve is installed at the second mounting groove, the stop valve stem is in threaded connection with the inner wall of the stop valve sleeve, the front end of the stop valve stem is provided with a plug, and the plug extends to the first exhaust passage.

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

[0011] Further, the valve seat is further provided with a transmission passage, and the transmission passage is communicated with the first mounting groove.

[0012] Further, the side end of the valve seat, on which the gas cylinder is installed, is provided with an extension connection section; and the first mounting groove and the second mounting groove are perpendicular to the extension direction of the extension connection section of the valve seat.

[0013] The present application has the following advantages: 1. The manual stop valve and the electric control valve are combined to be installed and controlled, so that the safety and stability of the whole gas cylinder valve are good.

[0014] 2. The state of the valve can be switched as required, if the electric control valve fails during use, only the manual stop valve needs to be locked and the emergency relief port needs to be opened to discharge the residual gas in the flow channel, so that the electric control valve can be disassembled and replaced, and the gas in the gas cylinder does not need to be completely discharged, so that the maintenance time and the high cost caused by gas loss are greatly saved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the present application.

[0016] Figure 2 is a structural schematic diagram of the present application in which the manual stop valve is opened and the electric control valve is closed.

[0017] Figure 3 is a structural schematic diagram of the present application in which the manual stop valve is opened and the electric control valve is opened.

[0018] Figure 4It is the structure diagram of manual closing valve and electric control valve closing of the present application.

[0019] Figure 5 The present application Figure 1 The enlarged schematic view at A in the figure.

[0020] In the figure: 1. valve seat; 2. discharge passage; 3. emergency discharge port; 4. first sealing ring; 5. guide sleeve; 6. moving iron core; 7. static iron core; 8. electric control valve; 9. coil fixing nut; 10. coil; 11. second sealing ring; 12. manual closing valve; 13. closing valve sleeve; 14. closing valve stem; 15. third sealing ring; 16. plug; 17. first exhaust passage; 18. second exhaust passage; 19. transmission passage; 20. through hole; 21. annular groove; 22. gas cylinder; 1-1. extended connecting section; 5-1. intermediate through hole. DETAILED DESCRIPTION

[0021] The present application will be further described below in conjunction with the accompanying drawings and examples.

[0022] As Figure 1 shown, the present application relates to the field of gas cylinder valve, in particular to a combined gas cylinder valve structure with electric control valve and manual closing valve, realizing double operation of electric control and manual control and safety guarantee for the valve.

[0023] The present application comprises valve seat 1, electric control valve 8 and manual closing valve 12. One side end of valve seat 1 is installed with gas cylinder 22, and the other side end of valve seat 1 is provided with emergency discharge port 3, which is connected with discharge passage 2 in valve seat 1. Valve seat 1 is provided with first installation groove and second installation groove. The side end of valve seat 1 installed with gas cylinder 22 is provided with extended connecting section 1-1; the first installation groove and second installation groove are perpendicular to the extension direction of extended connecting section 1-1 of valve seat 1, and the first installation groove and second installation groove are also perpendicular to the extension direction of discharge passage 2. Electric control valve 8 is installed at first installation groove, and manual closing valve 12 is installed at second installation groove. Valve seat 1 is internally provided with first exhaust passage 17, second exhaust passage 18 and discharge passage 2 which are through. Emergency discharge port 3 is connected with discharge passage 2; first exhaust passage 17 and second exhaust passage 18 are in communication with emergency discharge port 3, first installation groove and second installation groove. First exhaust passage 17 is in communication with the internal space of gas cylinder and second installation groove, and second exhaust passage 18 is in communication with first installation groove and second installation groove. Plug structure (not shown in the figure) is installed at emergency discharge port 3, and only in emergency or special situation, the plug structure is removed to realize exhaust operation.

[0024] The electric control valve 8 comprises a guide sleeve 5, a moving iron core 6, a static iron core 7, a coil 10 and a coil fixing nut 9. The guide sleeve 5 is installed in the first installation groove and extends outward, and is fixed between the guide sleeve 5 and the first installation groove by screw connection. The outer side of the outwardly extending part of the guide sleeve 5 is sleeved with the coil 10. The coil 10 is fixedly installed on the valve seat 1, and the coil fixing nut 9 is installed at the top end of the coil 10. A through hole 20 is arranged on the side wall of the bottom end of the guide sleeve 5, the second exhaust passage 18 communicates with the through hole 20, and the bottom end of the guide sleeve 5 is further provided with an annular groove 21, the diameter of the annular groove 21 is greater than the diameter of the middle through hole 5-1 of the guide sleeve 5. As shown in Figure 5 , the second exhaust passage 18 always communicates with the relief passage 2 through the through hole 20 and the annular groove 21.

[0025] As shown in Figure 1 , the diameters of the moving iron core 6 and the static iron core 7 are adapted to the diameter of the middle through hole 5-1 of the guide sleeve 5 and are sequentially installed in the guide sleeve 5, the moving iron core 6 is located close to the valve seat 1, and the static iron core 5 is located close to the coil fixing nut 9; the static iron core 7 is threadedly connected with the inner wall of the guide sleeve 5; the moving iron core 6 is embedded in the guide sleeve 5, the moving iron core 6 moves in the guide sleeve 5, there is enough displacement distance in the guide sleeve 5, the bottom of the guide sleeve 5 is limited by a limiting structure, and the moving iron core 6 cannot slide down unlimitedly. Although the second exhaust passage 18, the through hole 20 and the annular groove 21 are always in a through state, due to the arrangement of the block structure, the gas cannot be discharged outward, as shown in Figure 1 , 5 , the valve seat 1 is further provided with a transmission passage 19, and the transmission passage 19 communicates with the first installation groove. The transmission passage 19 serves as an external interface and is connected with a gas system at the rear end to realize transmission of the gas in the bottle.

[0026] When the electric control valve 8 is not powered, the static iron core 7 is not magnetized and has no magnetism, and the moving iron core 6 cannot be attracted. Due to the action of its own gravity, the moving iron core 6 moves to the bottom of the guide sleeve 5, that is, to the joint between the transmission passage 19 and the guide sleeve 5, the transmission passage 19 does not communicate with the second exhaust passage 18, the normal closing function of the valve is realized, the high-pressure gas in the gas cylinder 22 is cut off by the electric control valve 8, and the transmission passage 19 has no gas medium output. Conversely, when the electric control valve 8 is powered, the static iron core 7 is magnetized and attracts the moving iron core 6, the moving iron core 6 is subjected to the electromagnetic force of the static iron core 7 and moves along the inner wall of the guide sleeve 5, and the flow passage opening position of the second exhaust passage 18 and the transmission passage 19 is separated, so that the transmission passage 19 communicates with the second exhaust passage 18. When the electric control valve 8 is opened, the manual stop valve 12 is also opened, the medium in the gas cylinder 22 passes through the second exhaust passage 18 to the transmission passage 19 and is supplied to the gas system at the rear end. The above is the two states of normal closing and normal opening of the electric control valve 8, and the manual stop valve 12 is in a fully open state.

[0027] The first sealing ring 4 is installed between the guide sleeve 5 and the first mounting groove, and the second sealing ring 11 is installed between the static iron core 7 and the first mounting groove. The first sealing ring 4 and the second sealing ring 11 ensure that the internal gas cannot be discharged from the gap, and ensure the air tightness of the valve in normal operation.

[0028] The manual stop valve 12 includes a stop valve sleeve 13 and a stop valve stem 14. The stop valve sleeve 13 is installed at the second mounting groove, and the stop valve stem 14 is threadedly connected with the inner wall of the stop valve sleeve 13. The front end of the stop valve stem 14 is provided with a plug 16, and the plug 16 extends to the first exhaust passage 17.

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

[0030] The manual stop valve 12 realizes work by manually rotating the stop valve stem 14. When the stop valve stem 14 is rotated clockwise, it moves downward in the screw hole of the stop valve sleeve 13, contacts the flow passage opening between the first exhaust passage 17 and the second exhaust passage 18 in the valve seat 1, and at this time, the manual stop valve 12 is in a screwed closed state. When the stop valve stem 14 is rotated counterclockwise, it moves upward in the screw hole of the stop valve sleeve 13, and is separated from the flow passage opening between the first exhaust passage 17 and the second exhaust passage 18 in the valve seat 1, and the manual stop valve 12 is in an open state.

[0031] During use, if the electric control valve 8 cannot be closed due to power failure, it is determined that the electric control valve 8 is invalid, at this time, the high-pressure gas medium in the cylinder can be isolated by rotating the stop valve stem 14 clockwise to close the manual stop valve 12, so that the gas medium cannot flow to the second exhaust passage 18, and the valve can enter the maintenance state. After switching to the maintenance state, the residual gas in the second exhaust passage 18, the exhaust passage 2 and the transmission passage 19 can be discharged by opening the emergency relief port 3. After the exhaust is completed, the electric control valve 8 can be directly removed for repair and replacement operation. After maintenance is completed, the electric control valve 8 is kept closed, and the manual stop valve 12 is opened, and the whole valve returns to the initial normal closed state.

[0032] If the electric control valve 8 cannot be opened due to power failure, other tools are needed to close the manual stop valve 12 first to isolate the high-pressure gas medium in the cylinder, then the tool is inserted into the transmission passage 19 (this operation must separate the transmission passage 19 from the rear-end gas system), and the dynamic iron core 6 is pushed upward, at this time, the flow passage opening between the second exhaust passage 18 and the transmission passage 19 is connected, the emergency relief port 3 is opened, and the residual gas in the second exhaust passage 18, the exhaust passage 2 and the transmission passage 19 can be discharged.

[0033] As shown in Figure 2, it is the normal closed state of the valve, i.e. the manual stop valve 12 is open, and the electric control valve 8 is closed. The manual stop valve 12 is generally in the open state. The stop valve stem 14 is in the upper moving state in the screw hole of the stop valve sleeve 13, at this time, the flow channel opening between the first exhaust channel 17 and the second exhaust channel 18 is in the open state, and the gas in the gas cylinder 22 can flow to the second exhaust channel 18. The electric control valve 8 is in the unpowered state, and the moving iron core 6 is located at the flow channel opening position between the second exhaust channel 18 and the transmission channel 19, cutting off the through state of the second exhaust channel 18 and the transmission channel 19, realizing the normal closed function of the valve.

[0034] As shown in Figure 3, it is the normal use state of the valve, i.e. the manual stop valve 12 is open, and the electric control valve 8 is open. The manual stop valve 12 is normally kept in the open state. The electric control valve 8 is in the powered state, and the moving iron core 6 is moved along the inner wall of the guide sleeve 5 under the action of the electromagnetic force of the static iron core 7, and is separated from the flow channel opening between the second exhaust channel 18 and the transmission channel 19 in the valve seat 1. The electric control valve 8 is opened, at this time, the medium in the gas cylinder 19 is supplied to the rear-end gas system through the first exhaust channel 17, the first exhaust channel 18 and the transmission channel 19.

[0035] As shown in Figure 4, it is the maintenance state of the valve, i.e. the manual stop valve 12 is closed, and the electric control valve 8 is closed. This state is generally the case that the electric control valve 8 is out of order and needs to be disassembled and maintained. The manual stop valve 12 is closed by manual operation, so that the gas in the gas cylinder 22 is isolated from the second exhaust channel 18, then the plug structure at the emergency relief port 3 is opened, so that the remaining gas in the second exhaust channel 18 and the relief channel 2 can be discharged, and after the discharge is completed, the electric control valve 8 can be disassembled and repaired. After the repair is completed, the electric control valve 8 is in the closed state, and the manual stop valve 12 is in the open state by manual operation, and the valve is restored to the normal closed state (Figure 2). Figure 2 State).

Claims

1. A dual control combination cylinder valve comprising a valve seat (1), an electrically controlled valve (8) and a manually operated stop valve (12); characterized in that One side end of the valve seat (1) is provided with a gas cylinder, and the other side end of the valve seat (1) is provided with an emergency relief port (3); the valve seat (1) is provided with a first mounting groove and a second mounting groove; the electric control valve (8) is mounted at the first mounting groove, and the manual stop valve (12) is mounted at the second mounting groove; the valve seat (1) is internally provided with a first exhaust passage (17), a second exhaust passage (18) and a relief passage (2) which are in communication with each other; the emergency relief port (3) is connected with the relief passage (2) arranged in the valve seat (1); the first exhaust passage (17) and the second exhaust passage (18) are in communication with the emergency relief port (2), the first mounting groove, the second mounting groove, the first exhaust passage (17) is in communication with the internal space of the gas cylinder and the second mounting groove, and the second exhaust passage (18) is in communication with the first mounting groove and the second mounting groove.

2. A combination dual control cylinder valve according to claim 1 wherein The electric control valve (1) comprises a guide sleeve (5), a moving iron core (6), a static iron core (7), a coil (10) and a coil fixing nut (9); the guide sleeve (5) is mounted in the first mounting groove and extends outward; the part of the guide sleeve (5) extending outward is sleeved with the coil (10); the coil (10) is fixedly mounted on the valve seat (1); the coil fixing nut (9) is mounted at the top end of the coil (10); the sidewall of the bottom end of the guide sleeve (5) is provided with a through hole (20) in communication; the second exhaust passage (18) is in communication with the through hole (20); the bottom end of the guide sleeve (5) is provided with an annular groove (21), and the diameter of the annular groove (21) is greater than that of the middle through hole (5-1) of the guide sleeve (5).

3. A combination dual control cylinder valve according to claim 2 wherein The diameters of the moving iron core (6) and the static iron core (7) are adapted to the diameter of the middle through hole (5-1) of the guide sleeve (5) and are sequentially mounted in the guide sleeve (5); the moving iron core (6) is located close to the valve seat (1), and the static iron core (7) is located close to the coil fixing nut (9); the static iron core (7) is threadedly connected with the inner wall of the guide sleeve (5); and the moving iron core (6) is embedded in and movable in the guide sleeve (5).

4. A combination dual control cylinder valve according to claim 2 wherein A first sealing ring (4) is mounted between the guide sleeve (5) and the first mounting groove, and a second sealing ring (11) is mounted between the static iron core (7) and the first mounting groove.

5. A combination dual control cylinder valve according to claim 1 wherein The manual stop valve (12) comprises a stop valve sleeve (13) and a stop valve stem (14); the stop valve sleeve (13) is mounted at the second mounting groove; the stop valve stem (14) is threadedly connected with the inner wall of the stop valve sleeve (13); a plug (16) is mounted at the front end of the stop valve stem (14), and the plug (16) extends to the first exhaust passage (17).

6. A combination dual control cylinder valve according to claim 5 wherein A third sealing ring (15) is mounted between the stop valve sleeve (13) and the second mounting groove, and a fourth sealing ring is arranged between the stop valve stem (14) and the stop valve sleeve (13).

7. A combination dual control cylinder valve according to claim 1 wherein The valve seat (1) is further provided with a transmission passage (19) which is in communication with the first mounting groove.

8. A combination dual control cylinder valve according to claim 1 wherein The side end of the valve seat (1) on which the gas cylinder is mounted is provided with an extended connecting section (1-1); the first mounting groove and the second mounting groove are perpendicular to the extension direction of the extended connecting section (1-1) of the valve seat (1).

Images