CN215861979U - Control device and system of stop valve - Google Patents
Control device and system of stop valve Download PDFInfo
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- CN215861979U CN215861979U CN202121744469.8U CN202121744469U CN215861979U CN 215861979 U CN215861979 U CN 215861979U CN 202121744469 U CN202121744469 U CN 202121744469U CN 215861979 U CN215861979 U CN 215861979U
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Abstract
The utility model provides a control device and a control system of a cut-off valve, relates to the technical field of control of the cut-off valve, and effectively solves the technical problem of low operation stability of a production device caused by abnormal closing of the cut-off valve due to failure of an electromagnetic valve or failure of a control circuit of the electromagnetic valve. The control device of the shut-off valve includes: the air-conditioning control system comprises a first control air path, a second control air path, a slide valve, a reversing valve, main instrument air and control instrument air, wherein a first electromagnetic valve is arranged in the first control air path, a second electromagnetic valve is arranged in the second control air path, a slidable valve core is arranged in the slide valve, the slide valve is positioned at the junction of the first control air path and the second control air path, a branch containing the control instrument air is separated after the main instrument air enters a control device, the control instrument air reaches the control end of the reversing valve through the first control air path or the second control air path, so that the main instrument air is controlled to enter an air cylinder and be discharged from the air cylinder, and a driving cut-off valve is opened and closed.
Description
Technical Field
The utility model relates to the technical field of control of a cut-off valve, in particular to a control device and a control system of the cut-off valve.
Background
At present, in the chemical production process, some important trip valves are often required to be kept normally open in the normal operation process of the device, if the trip valves are abnormally closed, production interruption is caused to influence the smooth operation of the device, but the trip valves are required to be immediately closed when the device is abnormal, so that the safety of the production device is ensured. For example, the material control and safety protection of the production device are controlled by adopting a cut-off valve, and the application is wide. In the in-service use of trip valve, mostly single solenoid valve makes up with some supplementary pneumatic original paper, realizes the control to the trip valve.
However, the prior art has the defect of low reliability of the production device, and further causes the normal and stable operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a control device and a control system of a shut-off valve, which effectively solve the technical problem of low operation stability of a production device caused by abnormal shut-off of the shut-off valve due to failure of an electromagnetic valve or failure of a control circuit of the electromagnetic valve.
In a first aspect, the present invention provides a control device for a shut-off valve, comprising: the air conditioner comprises a first control air path, a second control air path, a slide valve, a reversing valve, main instrument air and control instrument air, wherein a first electromagnetic valve is arranged in the first control air path, a second electromagnetic valve is arranged in the second control air path, a slidable valve core is arranged in the slide valve, the slide valve is positioned at the junction of the first control air path and the second control air path, a branch containing the control instrument air is separated after the main instrument air enters a control device, the control instrument air enters the control end of the reversing valve through the first control air path or the second control air path and the slide valve, and controls the main instrument air to enter the air cylinder and be discharged from the air cylinder, so that the opening and closing of the reversing valve are driven;
when the first control gas path or the second control gas path has a fault, the valve core of the slide valve slides to the first control gas path or the second control gas path having the fault under the pressure of control instrument wind, and the control gas path having the fault is cut off; and the first control gas circuit or the second control gas circuit which works normally respectively controls the opening and closing of the stop valve by using the first electromagnetic valve or the second electromagnetic valve.
In one possible implementation, when the spool of the slide valve slides to the first control gas circuit with a fault, the second control gas circuit controls the opening and closing of the cut-off valve by using the second electromagnetic valve;
when the spool of the slide valve slides to the second control gas circuit with a fault, the first control gas circuit controls the cut-off valve to be opened and closed by using the first electromagnetic valve.
In one possible implementation, the first solenoid valve and the second solenoid valve are in a parallel structure.
In one possible implementation, the first control gas circuit is further provided with a first ball valve, the second control gas circuit is further provided with a second ball valve, the first ball valve is connected with the first electromagnetic valve, the second ball valve is connected with the second electromagnetic valve, and when the first electromagnetic valve or the second electromagnetic valve fails, the first ball valve connected with the first electromagnetic valve is closed, or the second ball valve connected with the second electromagnetic valve is closed.
In one possible implementation, the control device is further provided with a one-way valve and an air storage tank, and the one-way valve and the air storage tank are both positioned at an air path inlet of the control device;
the one-way valve is used for inputting instrument wind and cutting off reverse discharge of the instrument wind, and the air storage tank is used for storing the input instrument wind.
In a second aspect, the present invention provides a control system for a shutoff valve, comprising: the control device of the cut-off valve comprises a first control gas circuit and a second control gas circuit, the first pressure gauge is positioned on the first control gas circuit, and the second pressure gauge is positioned on the second control gas circuit;
the first pressure gauge is used for monitoring the first control gas circuit, and the second pressure gauge is used for monitoring the second control gas circuit.
The utility model provides a control device and a system of a shut-off valve, wherein the control device comprises: the control device comprises a first control gas path, a second control gas path, a slide valve, a reversing valve, main instrument wind and control instrument wind, wherein a first electromagnetic valve is arranged in the first control gas path, a second electromagnetic valve is arranged in the second control gas path, a slidable valve core is arranged in the slide valve, the slide valve is positioned at the junction of the first control gas path and the second control gas path, a branch containing the control instrument wind is separated after the main instrument wind enters the control device, the control instrument wind enters a control end of the reversing valve through the first control gas path or the second control gas path and the slide valve, controls the main instrument wind to enter the cylinder and be discharged from the cylinder, and drives the cut-off valve to be opened and closed; when the first control air path or the second control air path has a fault, the valve core of the slide valve slides to the first control air path or the second control air path having the fault under the pressure of the control instrument wind, and the control air path having the fault is cut off; and the first control gas circuit or the second control gas circuit which works normally controls the opening and closing of the stop valve by using the first electromagnetic valve or the second electromagnetic valve.
In this scheme, when the solenoid valve in arbitrary control gas circuit broke down in the operation, under the pressure effect of control instrument wind, the case self-sliding of slide valve is to the solenoid valve one end that breaks down, the follow-up solenoid valve that will break down of being convenient for surely goes out, and carry out on-line maintenance and change to the solenoid valve that breaks down, and need not stop the trip valve, another control gas circuit utilizes normal solenoid valve control trip valve to keep opening simultaneously, and then guaranteed that the trip valve can continuously open, the operation that the apparatus for producing can normally be stable has been guaranteed, effectively solve because of the lower technical problem of the lower apparatus for producing of trip valve abnormal shut-off result in apparatus for producing operating stability that solenoid valve trouble or solenoid valve control circuit trouble arouse.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a control device of a shut-off valve provided in an embodiment of the utility model;
FIG. 2 is a partial schematic structural view of a control device of a shut-off valve provided in an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a control device of a shut-off valve according to an embodiment of the present invention.
Icon: 1-a one-way valve; 2-a gas storage tank; 3-a filter pressure reducing valve; 4A-a first ball valve; 4B-a second ball valve; 5A-a first solenoid valve; 5B-a second solenoid valve; 6A-a first pressure gauge; 6B-a second pressure gauge; 7-a slide valve; 8A-a first reversing valve; 8B-a second reversing valve; 9A-a first cylinder; 9B-a second cylinder; 10-a shut-off valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
At present, in the chemical production process, some important trip valves are often required to be kept normally open in the normal operation process of the device, if the trip valves are abnormally closed, production interruption is caused to influence the smooth operation of the device, but the trip valves are required to be immediately closed when the device is abnormal, so that the safety of the production device is ensured. For example, the material control and safety protection of the production device are controlled by adopting a cut-off valve, and the application is wide. In the in-service use of trip valve, mostly single solenoid valve makes up with some supplementary pneumatic original paper, realizes the control to the trip valve. However, the prior art has the defect of low reliability of the production device, and further causes the normal and stable operation.
Based on this, this application embodiment provides a controlling means and system of trip valve, can effectively solve because of the solenoid valve trouble or the trip valve that solenoid valve control circuit trouble arouses is closed unusually through this utility model, leads to the lower technical problem of apparatus for producing operating stability.
Some embodiments of the utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Fig. 1 is a schematic structural diagram of a control device of a shut-off valve according to an embodiment of the present application. As shown in fig. 1, the control device of the shut valve includes: the air-conditioning system comprises a first control air path, a second control air path, a slide valve 7, reversing valves (8A, 8B), main instrument air and control instrument air, wherein a first electromagnetic valve 5A is arranged in the first control air path, a second electromagnetic valve 5B is arranged in the second control air path, a slidable valve core is arranged in the slide valve 7, the slide valve 7 is positioned at the junction of the first control air path and the second control air path, a branch containing the control instrument air is divided after the main instrument air enters a control device, the control instrument air enters the control ends of the first reversing valve 8A and the second reversing valve 8B through the first control air path or the second control air path and the slide valve 7, the main instrument air is controlled to enter the first air cylinder 9A and the second air cylinder 9B and is discharged from the first air cylinder 9A and the second air cylinder 9B, and a cut-off valve 10 is driven to be opened and closed;
when the first control air path or the second control air path has a fault, the valve core of the slide valve 7 slides to the first control air path or the second control air path having the fault under the pressure of the control instrument wind, and the control air path having the fault is cut off; the first control air path or the second control air path which works normally controls the cut-off valve 10 to be opened and closed by using the first electromagnetic valve 5A or the second electromagnetic valve 5B respectively.
Specifically, the first half section of the first control air path and the second control air path is a parallel structure, in the parallel structure, a first electromagnetic valve 5A is arranged in the first control air path, a second electromagnetic valve 5B is arranged in the second control air path, then the first control air path and the second control air path are merged to form a merged air path, a slide valve 7 is positioned at the merged part, and after main instrument wind (in fig. 1, the instrument wind enters the control device through a filter and pressure reducing valve 3 and then becomes the main instrument wind, namely, an uncracked gas channel is a path of the main instrument wind) enters the control device, a branch containing the control instrument wind (the uncracked gas channel is a path of the control instrument wind in fig. 1) is separated; after passing through the slide valve 7, the control instrument wind simultaneously enters the control ends of the first reversing valve 8A and the second reversing valve 8B, so that a gas passage between the first reversing valve 8A and the first cylinder 9A is opened, a gas passage between the second reversing valve 8B and the second cylinder 9B is opened, the main instrument wind is controlled to enter the first cylinder 9A and the second cylinder 9B and is exhausted from the first cylinder 9A and the second cylinder 9B, and the cut-off valve 10 is driven to be opened and closed.
It should be noted that the first control air path and the second control air path only represent 2 identical control air paths, when the control device normally operates, the first electromagnetic valve 5A and the second electromagnetic valve 5B are powered, control instrument air from the first electromagnetic valve 5A and the second electromagnetic valve 5B is converged into one path after passing through the slide valve 7, and is sent to the control ends of the first reversing valve 8A and the second reversing valve 8B, and the first reversing valve 8A and the second reversing valve 8B are controlled to open the main instrument air channel, so that the main instrument air enters the first air cylinder 9A and the second air cylinder 9B through the first reversing valve 8A and the second reversing valve 8B, and the cut-off valve 10 is controlled to open. When one of the electromagnetic valves is abnormally closed due to the fault of a control circuit or the fault of the electromagnetic valve, control instrument wind enters the slide valve 7 through the other normal electromagnetic valve (the two electromagnetic valves work redundantly) connected with the other electromagnetic valve in parallel, the valve core of the slide valve 7 is automatically pushed to one end of the fault electromagnetic valve under the action of the wind pressure of the control instrument, the gas circuit of the fault end is cut off, the gas circuit of the normal running end of the electromagnetic valve is opened, the cut-off valve 10 operates normally, in addition, the actions of the first electromagnetic valve 5A and the second electromagnetic valve 5B are controlled by a DC24V power supply in a control system, when the DC24V power supply of the control system supplies power to the first electromagnetic valve 5A and the second electromagnetic valve 5B, the first electromagnetic valve 5A and the second electromagnetic valve 5B are opened, and at the moment, the control instrument wind can pass through the first electromagnetic valve 5A and the second electromagnetic valve 5B, otherwise the first solenoid valve 5A and the second solenoid valve 5B are closed.
Illustratively, when the first control gas path fails, the valve core of the slide valve 7 slides to the failed first control gas path under the pressure of control instrument wind, and when the valve core slides to the failed first control gas path, the second control gas path controls the cut-off valve 10 to open by using the second electromagnetic valve 5B; or when the second control gas circuit is in fault, the valve core of the slide valve 7 slides to the second control gas circuit in fault under the pressure of the control instrument wind, and when the valve core slides to the second control gas circuit in fault, the first control gas circuit controls the cut-off valve 10 to be opened by using the first electromagnetic valve 5A; the control cut-off valve 10 is closed only when the first control gas circuit and the second control gas circuit simultaneously fail or the power supply of the control system DC24V is cut off to supply power to the first solenoid valve 5A and the second solenoid valve 5B.
In the embodiment of the application, the control device of the stop valve comprises: the control device comprises a first control gas path, a second control gas path, a slide valve, a reversing valve, main instrument wind and control instrument wind, wherein a first electromagnetic valve is arranged in the first control gas path, a second electromagnetic valve 5B is arranged in the second control gas path, a slidable valve core is arranged in the slide valve, the slide valve is positioned at the junction of the first control gas path and the second control gas path, a branch containing the control instrument wind is separated after the main instrument wind enters the control device, the control instrument wind enters a control end of the reversing valve through the first control gas path or the second control gas path and the slide valve, and the on-off of the main instrument wind path is controlled through the control end, so that the opening and the closing of the stop valve are controlled; when the first control air path or the second control air path has a fault, under the pressure action of the control instrument wind, the valve core of the slide valve slides to the first control air path or the second control air path having the fault, and the control air path having the fault is cut off; and the first control gas circuit or the second control gas circuit which works normally controls the opening and closing of the stop valve by using the first electromagnetic valve or the second electromagnetic valve.
In this scheme, when the solenoid valve in arbitrary control gas circuit broke down in the operation, under the pressure effect of control instrument wind, the case automatic sliding of slide valve is to the solenoid valve one end that breaks down, and close the ball valve that the solenoid valve that breaks down corresponds, just so can cut out the solenoid valve that breaks down, and overhaul on line and change the solenoid valve that breaks down, and need not stop the trip valve, another control gas circuit utilizes normal solenoid valve control trip valve to keep opening simultaneously, and then guaranteed that the trip valve can continuously open, the normal stable operation of apparatus for producing has been guaranteed, effectively solve the trip valve that causes because of solenoid valve trouble or solenoid valve control circuit trouble and close the lower technical problem of apparatus for producing operating stability unusually.
Exemplarily, fig. 2 is a schematic partial structural diagram of a control device of a shut-off valve according to an embodiment of the present invention, including: the bold is used for showing the gas channel that the control instrument wind passes through.
In some embodiments, as an example, when the spool of the spool valve slides to the first control gas circuit which is in failure, the second control gas circuit controls the cut-off valve 10 to open by using the second solenoid valve 5B;
when the spool of the slide valve slides to the second control gas circuit with a fault, the first control gas circuit controls the cut-off valve 10 to be opened by using the first electromagnetic valve 5A.
In the embodiment of the application, when the spool of the spool valve slides to the first control gas circuit that breaks down, the second control gas circuit utilizes the second solenoid valve to control the cut-off valve to open, and when the spool of the spool valve slides to the second control gas circuit that breaks down, the first control gas circuit utilizes the first solenoid valve to control the cut-off valve to open, so, when one of them control gas circuit breaks down, can open through another control gas circuit control cut-off valve, guaranteed that the cut-off valve can continuously open.
In some embodiments, as one example, the first solenoid valve 5A and the second solenoid valve 5B are in a parallel configuration.
Specifically, the first half section of the first control gas path and the first half section of the second control gas path are of a parallel structure, in the parallel structure, the first control gas path is provided with a first electromagnetic valve 5A, and the second control gas path is provided with a second electromagnetic valve 5B, so that the first electromagnetic valve 5A and the second electromagnetic valve 5B are also of a parallel structure.
In some embodiments, the first control gas circuit is further provided with a first ball valve 4A, the second control gas circuit is further provided with a second ball valve 4B, the first ball valve 4A is connected with the first electromagnetic valve, the second ball valve 4B is connected with the second electromagnetic valve, and when the first electromagnetic valve or the second electromagnetic valve fails, the first ball valve 4A connected with the first electromagnetic valve is closed, or the second ball valve 4B connected with the second electromagnetic valve is closed.
Specifically, after the first ball valve 4A or the second ball valve 4B is closed, the failed first electromagnetic valve or the failed second electromagnetic valve can be overhauled and replaced on line without stopping the stop valve, so that the normal and stable operation of the device is ensured.
In some embodiments, as an example, as shown in fig. 3, the control device of the shut-off valve is further provided with a check valve 1 and an air storage tank 2, and the check valve 1 and the air storage tank 2 are both located at an air passage inlet of the control device;
the check valve 1 is used for inputting instrument wind and cutting off reverse discharge of the instrument wind, and the gas storage tank 2 is used for storing the input instrument wind.
Specifically, the gas circuit entrance of the control device of the stop valve is provided with a check valve 1, instrument air enters a gas storage tank 2 through the check valve 1, and when an instrument air system fails, the combination of the check valve 1 and the gas storage tank 2 enables the stop valve 10 to be closed once to guarantee the safety of the production device.
In some embodiments, as an example, the control device of the shut-off valve is also provided with a filter and pressure reducing valve 3, the filter and pressure reducing valve 3 being connected with the air storage tank 2.
The control system of a shut-off valve that this application embodiment provided includes: the control device of the stop valve comprises a first control gas circuit and a second control gas circuit, the first pressure gauge 6A is positioned on the first control gas circuit, and the second pressure gauge 6B is positioned on the second control gas circuit;
the first pressure gauge 6A is used for monitoring the first control gas circuit, and the second pressure gauge 6B is used for monitoring the second control gas circuit.
Specifically, a first pressure gauge 6A is provided in a control path from the first solenoid valve 5A to the spool valve 7, a second pressure gauge 6B is arranged on a control gas path from the second electromagnetic valve 5B to the slide valve 7, the first pressure gauge 6A and the second pressure gauge 6B are respectively used for detecting whether the first electromagnetic valve 5A and the second electromagnetic valve 5B normally act or not, when the first electromagnetic valve 5A and the second electromagnetic valve 5B normally act, the indication of the first pressure gauge 6A and the second pressure gauge 6B should be changed along with the action of the first solenoid valve 5A and the second solenoid valve 5B, if the indication of the first pressure gauge 6A or the second pressure gauge 6B does not change along with the action of the corresponding solenoid valve, indicating that the solenoid valve corresponding to the pressure gauge without change has a jam fault or a control line thereof has a fault, so that the solenoid valve cannot be normally opened, and at the moment, the failed solenoid valve needs to be replaced or the control line thereof needs to be checked in time.
The control system of a shut-off valve that this application embodiment provided includes: the control device of the cut-off valve comprises a first control gas circuit and a second control gas circuit, the first pressure gauge is positioned on the first control gas circuit, and the second pressure gauge is positioned on the second control gas circuit; the first pressure gauge is used for monitoring the first control gas circuit, and the second pressure gauge is used for monitoring the second control gas circuit. Therefore, in the normal operation process of the control device of the cut-off valve, a user can judge whether the corresponding electromagnetic valve acts normally or not by observing whether the first pressure gauge and the second pressure gauge indicate the normality or not, so that the purpose of daily inspection is achieved, and then the fault of the control gas circuit of the cut-off valve can be found in time, so that the normal operation of the production device is ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A control device for a shut-off valve, characterized by comprising: the air control system comprises a first control air path, a second control air path, a slide valve, a reversing valve, main instrument air and control instrument air, wherein a first electromagnetic valve is arranged in the first control air path, a second electromagnetic valve is arranged in the second control air path, a slidable valve core is arranged in the slide valve, the slide valve is positioned at the junction of the first control air path and the second control air path, a branch containing the control instrument air is separated after the main instrument air enters a control device, the control instrument air enters the control end of the reversing valve through the first control air path or the second control air path and the slide valve, and controls the main instrument air to enter an air cylinder and be discharged from the air cylinder, and the cut-off valve is driven to be opened and closed;
when the first control gas path or the second control gas path has a fault, the valve core of the slide valve slides to the first control gas path or the second control gas path having the fault under the pressure of control instrument wind, and the control gas path having the fault is cut off; and the first control gas circuit or the second control gas circuit which works normally respectively controls the opening and closing of the stop valve by using the first electromagnetic valve or the second electromagnetic valve.
2. The control device of the shut-off valve according to claim 1, characterized in that the second control gas circuit controls the shut-off valve to open and close by means of the second solenoid valve when the spool of the spool valve slides to the first control gas circuit that has failed;
when the spool of the slide valve slides to the second control gas circuit with a fault, the first control gas circuit controls the cut-off valve to be opened and closed by using the first electromagnetic valve.
3. The control device of the shut-off valve according to claim 1, wherein the first solenoid valve and the second solenoid valve are in a parallel structure.
4. The control device of the cut-off valve according to claim 1, wherein the first control gas circuit is further provided with a first ball valve, the second control gas circuit is further provided with a second ball valve, the first ball valve is connected with the first electromagnetic valve, the second ball valve is connected with the second electromagnetic valve, and when the first electromagnetic valve or the second electromagnetic valve fails, the first ball valve connected with the first electromagnetic valve is closed, or the second ball valve connected with the second electromagnetic valve is closed.
5. The control device of the cut-off valve according to claim 1, characterized in that the control device is further provided with a one-way valve and an air storage tank, and the one-way valve and the air storage tank are both positioned at an air passage inlet of the control device;
the one-way valve is used for inputting instrument wind and cutting off reverse discharge of the instrument wind, and the air storage tank is used for storing the input instrument wind.
6. A control system for a shutoff valve, comprising: a first pressure gauge, a second pressure gauge and a control device of the cut-off valve according to any one of claims 1 to 5, wherein the control device of the cut-off valve comprises a first control gas circuit and a second control gas circuit, the first pressure gauge is positioned on the first control gas circuit, and the second pressure gauge is positioned on the second control gas circuit;
the first pressure gauge is used for monitoring the first control gas circuit, and the second pressure gauge is used for monitoring the second control gas circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121744469.8U CN215861979U (en) | 2021-07-28 | 2021-07-28 | Control device and system of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121744469.8U CN215861979U (en) | 2021-07-28 | 2021-07-28 | Control device and system of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861979U true CN215861979U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121744469.8U Active CN215861979U (en) | 2021-07-28 | 2021-07-28 | Control device and system of stop valve |
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| CN (1) | CN215861979U (en) |
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- 2021-07-28 CN CN202121744469.8U patent/CN215861979U/en active Active
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