CN218670716U - Gas manual cut-off valve - Google Patents
Gas manual cut-off valve Download PDFInfo
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- CN218670716U CN218670716U CN202222726313.8U CN202222726313U CN218670716U CN 218670716 U CN218670716 U CN 218670716U CN 202222726313 U CN202222726313 U CN 202222726313U CN 218670716 U CN218670716 U CN 218670716U
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Abstract
The utility model relates to a manual fuel gas cut-off valve, which comprises a valve body, a valve rod and a locking structure; the locking structure comprises a spring bolt, a spring, an anti-misoperation handle and a pressing tool; the valve body is provided with a blind hole, and the spring tongue are sequentially arranged in the blind hole; prevent that maloperation handle is fixed with the valve rod upper end, when it drives the valve rod and rotates, the position that self and blind hole correspond is for having two faces of difference in height: one is a pressure surface which can completely press the spring tongue into the blind hole, and the other is a free surface which can make the spring tongue freely bounce upwards; the pressing tool can press the spring bolt and rotate along with the misoperation prevention handle.
Description
Technical Field
The utility model relates to a manual block valve of gas belongs to the gas debugging and cuts off technical field.
Background
In various gas equipment, the application of the manual cut-off valve is very wide, especially, the manual cut-off valve is widely used for realizing the operation and control of the gas equipment in various functional interfaces, and the manual cut-off valve is usually in a normally closed state in the application scenes. Although the existing manual block valve has various types and is also provided with an opening and closing limiting device, the existing manual block valve only ensures that the valve can be completely opened and closed, if operation and maintenance personnel carelessly open the valve which is in a normally closed state during maintenance, the realization of the function of the gas equipment is influenced, and even certain potential safety hazard is brought to the gas equipment.
On the contrary, if the gas valve in the normally open state is closed carelessly, the safety hazard is also brought.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gas manual block valve, which can lock the valve in a normally closed state, and can open the valve only by removing the lock state; or the valve can be locked in a normally open state, and the valve can be closed only by releasing the locked state.
The utility model adopts the following technical proposal:
a manual fuel gas cut-off valve comprises a valve body, a valve rod and a locking structure; the locking structure comprises a spring bolt A, a spring B, an anti-misoperation handle C and a pressing tool H; the valve body is provided with a blind hole, and the spring B and the spring tongue A are successively arranged in the blind hole; prevent that maloperation handle C is fixed with the valve rod upper end, when it drives the valve rod and rotates, self with the position that the blind hole corresponds is for having two faces of difference in height: one is a pressure surface C2 which can completely press the spring tongue A into the blind hole, and the other is a free surface C3 which can make the spring tongue A freely bounce upwards; the pressing tool H can press the spring bolt A and rotate along with the misoperation prevention handle C.
Taking a normally closed state as an example, when the valve needs to be opened, a pressing tool H needs to be used for pressing down the elastic tongue A, compressing the spring B, and meanwhile, the handle C is slightly rotated anticlockwise, after the elastic tongue A leaves the groove of the misoperation preventing handle C, the pressing tool H can be released, the handle C is continuously rotated anticlockwise until reaching a limiting position, and the valve is ensured to be opened in place; when the valve is closed, the handle C is rotated clockwise to a limit position, the spring tongue A moves to the groove position of the handle C and is automatically sprung upwards, the spring B extends, and the valve is locked in a closed state. Therefore, the safety of the normally closed state can be ensured, and the valve cannot be opened due to misoperation.
Preferably, the valve body has a through hole C1 into which the pressing tool H is inserted at a position corresponding to the free surface C3.
Preferably, the anti-misoperation handle C and the pressing tool H are respectively provided with a fixing hole for connecting the lock chain, so as to prevent the pressing tool H from being lost.
Preferably, the ventilation adjusting structure is further included; the ventilation debugging structure comprises an external thread pipe, one end of the external thread pipe is fixed on the valve body and communicated with the valve body, and the other end of the external thread pipe is in threaded connection with a protection cover D; and an air valve core structure is arranged in the external thread pipe.
Further, the valve inside structure includes compression spring F, press the depression bar E, the fixed valve plate that is equipped with a port G shutoff that can communicate external screw thread pipe and valve body in press the depression bar E bottom.
Furthermore, a supporting plate for supporting the spring F and guiding the pressing rod E is disposed inside the external threaded pipe.
Furthermore, the ventilation debugging structure is arranged on the valve body at the downstream of the gas manual cut-off valve.
The beneficial effects of the utility model reside in that: the valve can be locked in a closed state (or an open state), and the valve can be opened (closed) only by releasing the locked state, so that misoperation in maintenance is prevented, the maintenance time cost is reduced, and the operation risk of the gas equipment is reduced.
Drawings
Fig. 1 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of the gas manual shutoff valve (normally closed) of the present invention in an open state.
Fig. 2 is a plan view of the gas manual shutoff valve (normally closed) of the present invention in an open state.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of the gas manual shut-off valve (normally closed) of the present invention inbase:Sub>A closed state.
Fig. 4 is a plan view of the gas manual shutoff valve (normally closed) of the present invention in a closed state.
Fig. 5 is a system schematic diagram of a second embodiment of the gas manual shutoff valve of the present invention.
Fig. 6 is a schematic system diagram of a third embodiment of the gas manual shutoff valve of the present invention.
Fig. 7 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of the gas manual block valve (normally open) of the present invention in an open state.
Fig. 8 is a plan view of the gas manual shutoff valve (normally open) in the open state of the present invention.
Fig. 9 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of the gas manual shutoff valve (normally open) in the closed state of the present invention.
Fig. 10 is a plan view of the gas manual shutoff valve of the present invention in a closed (normally open) state.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows:
referring to fig. 1-4, a manual fuel gas shutoff valve comprises a valve body, a valve rod and a locking structure; the locking structure comprises a spring bolt A, a spring B, an anti-misoperation handle C and a pressing tool H; the valve body is provided with a blind hole, and the spring B and the spring tongue A are successively arranged in the blind hole; prevent that maloperation handle C is fixed with the valve rod upper end, when it drives the valve rod and rotates, self with the position that the blind hole corresponds is for having two faces of difference in height: one is a pressure surface C2 which can completely press the spring tongue A into the blind hole, and the other is a free surface C3 which can make the spring tongue A freely bounce upwards; the pressing tool H can press the spring bolt A and rotate along with the misoperation prevention handle C.
The general state of the valve can be a normally open state or a normally closed state, taking the normally closed state as an example, when the valve needs to be opened, referring to fig. 2, a pressing tool H needs to be used for pressing down an elastic tongue a (inserted into a through hole C1) to compress a spring B, meanwhile, a handle C is slightly rotated anticlockwise, after the elastic tongue a leaves a groove of an anti-misoperation handle C, the pressing tool H can be loosened, the handle C is continuously rotated anticlockwise until reaching a limiting position, and the valve is ensured to be opened in place, as shown in fig. 1; when the valve is closed, the handle C is rotated clockwise to a limit position, the spring tongue A moves to the groove position of the handle C and is automatically sprung upwards, the spring B extends, and the valve is locked in a closed state. Therefore, the safety of the normally closed state can be ensured, and the valve cannot be opened due to misoperation.
Therefore, the valve can be locked in a closed state (or an open state) and the locked state must be released to open the valve (close the valve), so that misoperation in maintenance is prevented, the maintenance time cost is reduced, and the operation risk of the gas equipment is reduced.
In this embodiment, as a preferable scheme, the anti-misoperation handle C and the pressing tool H are respectively provided with a fixing hole for connecting the lock chain, as shown in fig. 1 and 3, so as to prevent the pressing tool H from being lost.
The above is the first main innovative part of the utility model, and the following is to introduce another main innovative part of the utility model:
referring to fig. 1-4, the manual fuel gas cut-off valve further comprises a ventilation debugging structure; the ventilation debugging structure comprises an external threaded pipe, one end of the external threaded pipe is fixed on the valve body and communicated with the valve body, and the other end of the external threaded pipe is in threaded connection with a protective cover D; a valve core structure is arranged in the external thread pipe.
Referring to fig. 1-4, the valve inside structure comprises a compression spring F and a pressing rod E, and a valve plate capable of plugging a port G for communicating the external threaded pipe with the valve body is fixedly arranged at the bottom of the pressing rod E.
With continued reference to fig. 1-4, a support plate for carrying the spring F and guiding the pressing rod E is provided inside the externally threaded tube. The support plate is located inside the external threaded tube and is not marked with a symbol.
With continued reference to fig. 1-4, the vent adjustment structure is disposed on the valve body downstream of the gas manual shutoff valve.
When the debugging structure is used, for example, the debugging structure is positioned on the downstream side of the valve, referring to fig. 1-4, the protective cover D can be moved away under the condition that the valve is closed and upstream media are blocked, the port G is unblocked through the matched pressing rod E, the compression spring F and the port G, various debugging functions are completed, after debugging is finished, only the pressing rod E needs to be loosened, the compression spring F extends, the pressing rod E rises along with the pressing rod E, the port G is closed, air flow at the position is blocked, and meanwhile, the air tightness at the position can be ensured by the pressurized air in the valve body and the compression spring F.
Above-mentioned scheme will cut off the valve and debug the structure integration together, reduces the length of the functional straight tube section of gas pressure regulating box, regulator cubicle, makes pressure regulating box, regulator cubicle structure more compact. The debugging structure adopts the structural design of a valve core, and airtightness in daily operation and convenience in test operation are ensured. The debugging structure protective cover D is connected with the debugging structure main body through an anti-falling leather sheath (see a section of arc line in both figures 2 and 4) so as to prevent the loss of the protective cover D. On the basis that the guarantee function realized, the structure of equipment in gas pressure regulating box, the regulator cubicle is integrated to this scheme, makes it compacter.
In this embodiment, the pressing tool H is made of resin, has a hole at the distal end, and can be fixed on the handle by a chain to prevent loss.
In this embodiment, the anti-misoperation handle is a combined type integrated structure, the lower half part of the anti-misoperation handle is in a fan shape and comprises an opening and closing limiting structure, a closed locking groove and a pressing tool H fixing hole, and the upper half part of the anti-misoperation handle is in a short handle structure similar to an ellipse, occupies a smaller operation space and can enable the structure of the gas equipment to be more compact.
In this embodiment, the anti-misoperation handle has a limit structure to ensure that the valve is closed in place, the limit structure and the handle are integrally designed, and a locking structure to ensure that the closed valve is not opened due to misoperation is also provided. The pressing tool H is made of resin and is fixed on the handle with a lock chain so as to prevent loss.
Fig. 7, 8 and fig. 9 and 10 show the open state and the closed state of the gas manual shutoff valve which is normally open respectively. The difference between the manual gas shutoff valve and the manual gas shutoff valve in fig. 1, 2 and 3 and 4 is that the normally open manual gas shutoff valve has a dead locking structure which is just opposite to the normally closed structure, and the rest of the structure and the working principle are the same as those of the embodiment.
Example two:
as a specific example for explaining the debugging structure, referring to fig. 5 (in conjunction with fig. 1-4), the manual block valve 2 at the air source inlet, the manual block valve 4 at the air source outlet, and the system blowdown valve 6 are closed to close the line, and ensure that the emergency shutoff valve 3.3 in the integrated pressure regulator 3 is in an open state, the protective cover D is removed, the structure E is pressed by a matching tool, the spring F is compressed, the port G is removed to make the port G unblocked, nitrogen gas for debugging and the like enters the closed line through the port G, the closed line is pressurized according to the designed pressure of the pipeline after the pressure regulator, the pressure should rise slowly, and after reaching the specified test pressure, leakage inspection is performed on all joints and connecting parts by using the leak detection liquid. The online leakage detection of a single pressure regulating box and a pressure regulating cabinet adopting the integrated pressure regulator can be conveniently realized.
With continued reference to fig. 5, the line is now in a closed state, and the manual block valve 2 at the air supply inlet, the manual block valve 4 at the air supply outlet, and the system blowdown valve 6 are all in a closed state. Under this prerequisite, at first loosen pressing structure E in the manual shut-off valve 2 makes spring F extend, seals port G, stops test gas and fills, slowly closes quick emergency valve 3.3 in the integral type pressure regulator 3 again, treats this quick emergency valve 3.3 and closes the back of targetting in place, opens system's blowdown valve 6, and discharge integral type pressure regulator 3 extremely pipe section test gas between 4 manual shut-off valves closes system's blowdown valve 6 immediately, reopens manual shut-off valve 4 and installs needle valve 5.1 on the manual shut-off valve 4 test structure of ventilating observes whether 5 numerical values of the interim manometer of installing on the manual shut-off valve 4 change, can judge whether can effectively cut off quick emergency valve 3.3.
The rest is the same as the first embodiment.
Example three:
as a concrete example of explaining the debugging structure, see fig. 6, keep being located the air supply import department manual block valve 2, be located the air supply exit manual block valve 4 is the on-state, moves away respectively manual block valve 2 with visor D on the manual block valve 4 presses structure E through the appurtenance, and compression spring F moves away port G, makes port G unblocked, and external interim manometer 1 and needle valve 1.1, interim manometer 5 and needle valve 5.1 on the appurtenance can sample on line, observes pressure state around the voltage regulator, need not the fixed manometer of installation, reduces the length of gas pressure regulating box, the functional straight tube section of regulator cubicle, makes pressure regulating box, regulator cubicle structure compacter.
The rest is the same as the first embodiment.
The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.
Claims (7)
1. The utility model provides a manual block valve of gas, includes valve body, valve rod, its characterized in that:
the lock also comprises a locking structure;
the locking structure comprises a spring bolt (A), a spring (B), an anti-misoperation handle (C) and a pressing tool (H);
the valve body is provided with a blind hole, and the spring (B) and the spring tongue (A) are sequentially arranged in the blind hole;
prevent mistake operating handle (C) and valve rod upper end fixed, when it drives the valve rod and rotates, self with the position that the blind hole corresponds is for having two faces of difference in height:
one is a pressure surface (C2) which can completely press the spring tongue (A) into the blind hole, and the other is a free surface (C3) which can make the spring tongue (A) freely bounce upwards;
the pressing tool (H) can press the spring tongue (A) and rotate along with the misoperation preventing handle (C).
2. The gas manual shut-off valve of claim 1, wherein: the valve body is provided with a through hole (C1) for inserting a pressing tool (H) at the position corresponding to the free surface (C3).
3. The gas manual shut-off valve of claim 1, wherein: the anti-misoperation handle (C) and the pressing tool (H) are respectively provided with a fixing hole for connecting the lock chain so as to prevent the pressing tool (H) from being lost.
4. The gas manual shut-off valve of claim 1, wherein:
the ventilation debugging structure is also included;
the ventilation debugging structure comprises an external threaded pipe, one end of the external threaded pipe is fixed on the valve body and communicated with the valve body, and the other end of the external threaded pipe is in threaded connection with a protective cover (D);
and an air valve core structure is arranged in the external thread pipe.
5. The gas manual shutoff valve of claim 4, wherein: the valve core structure comprises a compression spring (F) and a pressing rod (E), wherein a valve plate capable of plugging the external threaded pipe and a port (G) communicated with the valve body is fixedly arranged at the bottom of the pressing rod (E).
6. The gas manual shut-off valve of claim 5, wherein: a supporting plate used for bearing the compression spring (F) and guiding the pressing rod (E) is arranged in the external thread pipe.
7. The gas manual shutoff valve of claim 4, wherein: the ventilation debugging structure is arranged on the valve body at the downstream of the gas manual cut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222726313.8U CN218670716U (en) | 2022-10-17 | 2022-10-17 | Gas manual cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222726313.8U CN218670716U (en) | 2022-10-17 | 2022-10-17 | Gas manual cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218670716U true CN218670716U (en) | 2023-03-21 |
Family
ID=85563891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222726313.8U Active CN218670716U (en) | 2022-10-17 | 2022-10-17 | Gas manual cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218670716U (en) |
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2022
- 2022-10-17 CN CN202222726313.8U patent/CN218670716U/en active Active
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| GR01 | Patent grant |