CN219242769U - Control mechanism for redundant design of double solenoid valves of valve - Google Patents
Control mechanism for redundant design of double solenoid valves of valve Download PDFInfo
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- CN219242769U CN219242769U CN202223571668.0U CN202223571668U CN219242769U CN 219242769 U CN219242769 U CN 219242769U CN 202223571668 U CN202223571668 U CN 202223571668U CN 219242769 U CN219242769 U CN 219242769U
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Abstract
The utility model provides a control mechanism for redundant design of double solenoid valves of a valve, which comprises: the device comprises a two-position three-way electromagnetic valve A, a two-position three-way electromagnetic valve B, a shuttle valve, a connecting joint, a connecting pipeline and a filtering and reducing valve, wherein an instrument air source is connected with the filtering and reducing valve, the filtering and reducing valve is connected with the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B, the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B are connected with the shuttle valve, all elements are connected through the connecting pipeline and the connecting joint, and the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B are controlled by control signals. The control mechanism with the redundant design of the double solenoid valves for the valve has the advantages of simple structure, clear air passage and high reliability.
Description
Technical Field
The utility model relates to the field of automatic control, in particular to a control mechanism for redundant design of double solenoid valves of a valve.
Background
In petrochemical production, the design requirements for safety instrument systems are increasing, and electromagnetic valves are a critical ring as operators of safety interlock action programs. In safety instrumented systems, the safety interlock system relies entirely on solenoid valves to effect valve actuation. Therefore, it is important to provide a control mechanism and a method for redundant design of double solenoid valves of a valve, which have the advantages of simple structure, clear air path, high reliability and the like.
Disclosure of Invention
The utility model aims to provide a control mechanism with redundant design of double solenoid valves of a valve, which has the advantages of simple structure, clear air passage and high reliability.
In order to achieve the above object, the present utility model provides the following solutions:
a control mechanism for a valve dual solenoid valve redundancy design, comprising: the device comprises a two-position three-way electromagnetic valve A, a two-position three-way electromagnetic valve B, a shuttle valve, a connecting joint, a connecting pipeline and a filtering and reducing valve, wherein an instrument air source is connected with the filtering and reducing valve, the filtering and reducing valve is connected with the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B, the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B are connected with the shuttle valve, all elements are connected through the connecting pipeline and the connecting joint, and the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B are controlled by control signals.
Optionally, the two-position three-way single-control electromagnetic valve A is provided with an input air source port A, a control air output port A and an exhaust port A; the two-position three-way single-control electromagnetic valve B is provided with an input air source port B, a control air output port B and an exhaust port B, the shuttle valve is provided with a P1 end, a P2 end and a P3 end, and the P3 end is used for controlling air output;
the filtering pressure reducing valve is respectively connected with the input air source port A and the input air source port B, the control air output port A is connected with the P1 end, the control air output port B is connected with the P2 end, and control signals are respectively and electrically connected with the magnetic valve A and the magnetic valve B.
Optionally, the exhaust ports a and B are vented.
The control mechanism for the redundant design of the valve double electromagnetic valves provided by the utility model is used for judging whether the two-position three-way electromagnetic valves A and B are intact or whether the connecting pipelines of the two-position three-way electromagnetic valves A and B are blocked by comparing and judging the pressures between the two-position three-way electromagnetic valves A and B; the method has wide application prospect in industries such as electric power, petroleum, natural gas and the like, can improve the reliability of control performance and reduce the difficulty of troubleshooting system faults.
The utility model has the advantages of simple structure, clear air path, high reliability and the like.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the principles of the present utility model;
FIG. 2 is a schematic diagram of the solenoid valve A, B energized and the valve open;
fig. 3 shows the solenoid valve A, B de-energized and the valve closed.
Reference numerals: 1. an input air source port A; 2. a control gas output port A; 3. an exhaust port a; 4. an input air source port B; 5. a control gas output port B; 6. an exhaust port B; 7. a filter pressure reducing valve; 8. a two-position three-way electromagnetic valve A; 9. a two-position three-way electromagnetic valve B; 10. a shuttle valve; 11. a cylinder; 12. a piston; 13. and (3) a spring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a control mechanism with redundant design of double solenoid valves of a valve, which has the advantages of simple structure, clear air passage and high reliability.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, a control mechanism of a valve double solenoid valve redundancy design includes: the automatic control device comprises a two-position three-way electromagnetic valve A8, a two-position three-way electromagnetic valve B9, a shuttle valve 10, a connecting joint, a connecting pipeline and a filtering and reducing valve 7, wherein an instrument air source is connected with the filtering and reducing valve 7, the filtering and reducing valve 7 is connected with the two-position three-way electromagnetic valve A8 and the two-position three-way electromagnetic valve B9, the two-position three-way electromagnetic valve A8 and the two-position three-way electromagnetic valve B9 are connected with the shuttle valve 10, all elements are connected through the connecting pipeline and the connecting joint, and the two-position three-way electromagnetic valve A8 and the two-position three-way electromagnetic valve B9 are controlled by control signals.
Optionally, the two-position three-way single-control electromagnetic valve A is provided with an input air source port A1, a control air output port A2 and an exhaust port A3; the two-position three-way single-control electromagnetic valve B is provided with an input air source port B4, a control air output port B5 and an exhaust port B6, the shuttle valve 10 is provided with a P1 end, a P2 end and a P3 end, and the P3 end is used for controlling air output;
the filtering and pressure reducing valve 7 is respectively connected with the input air source port A1 and the input air source port B4, the control air output port A2 is connected with the P1 end, the control air output port B5 is connected with the P2 end, and control signals are respectively and electrically connected with the magnetic valve A and the magnetic valve B.
Optionally, the exhaust ports A3 and B6 are vented.
The working principle of the utility model is as follows: the working principle of the shuttle valve 10 is that when the air source is input at the P1 end, the P1 end is communicated with the P3 end, the P2 end is not communicated with the P3 end, when the air source is input at the P2 end, the P2 end is communicated with the P3 end, the P1 end is not communicated with the P3 end, when the air source is input at the P1 end and the P2 end, the end with high pressure is communicated with the P3 end, and when the input air source pressures at the P1 end and the P2 end are the same, the end which is firstly communicated is communicated with the P3 end, and the specific on-off conditions are shown in the table 1.
The embodiment of the utility model is as follows: the end P3 is connected with the head of a cylinder 11, a piston 12 is arranged in the cylinder 11, a spring 13 is arranged at the tail of the cylinder 11, and the piston 12 penetrates through the spring 13. When the door actuating mechanism works normally, the two-position three-way single-control electromagnetic valve A and the two-position three-way single-control electromagnetic valve B are in an excitation (power-on) state, and the shuttle valve 10 can normally output control gas only if one of the two-position three-way single-control electromagnetic valve A and the two-position three-way single-control electromagnetic valve B can work normally, so that the valve can be in a normal state, as shown in fig. 2. Only when the two-position three-way single-control electromagnetic valves A and B are in the power-off state at the same time, the P3 end of the shuttle valve 10 loses the output of the control gas, and the valve executes an interlocking signal, as shown in fig. 3. Taking the two-position three-way single-control electromagnetic valve A to be powered on first and the two-position three-way single-control electromagnetic valve B to be powered on later, and taking the two-position three-way single-control electromagnetic valve A to be powered off first and the two-position three-way single-control electromagnetic valve B to be powered off later when the power is lost, the specific on-off states of the two-position three-way single-control electromagnetic valve and the interfaces of the shuttle valve 10 are shown in the table 2.
As shown in table 1, the control mechanism of the valve double-solenoid valve redundancy design provided by the utility model can also realize the function of comparing and judging the pressures between the two-position three-way solenoid valve A8 and the two-position three-way solenoid valve B9, and can judge whether the two-position three-way solenoid valve A8 and the two-position three-way solenoid valve B9 are good or whether the connecting pipeline thereof is blocked or not according to the function.
| P1 end | P2 end | P3 end |
| With air supply input | No air source input | P1 end-P3 end is communicated, and P1 end is used as an output source |
| No air source input | With air supply input | P2 end-P3 end is communicated, and P2 end is used as an output source |
| With air supply input | With air supply input | P1 end>In the P2 end, the P1 end is communicated with the P3 end, and the P1 end is used as an output source |
| With air supply input | With air supply input | P1 end<When the P2 end is used, the P2 end is communicated with the P3 end, and the P2 end is used as an output source |
| With air supply input | With air supply input | When P1 end=p2 end, the ventilation end is connected with the P3 end, and the ventilation end is used as the output source |
Table 1 shuttle valve on-off conditions of ports
Table 2 solenoid valve and shuttle valve get powered off on and off condition of each port
The control mechanism for the redundant design of the valve double electromagnetic valves provided by the utility model is used for judging whether the two-position three-way electromagnetic valves A and B are intact or whether the connecting pipelines of the two-position three-way electromagnetic valves A and B are blocked by comparing and judging the pressures between the two-position three-way electromagnetic valves A and B; the method has wide application prospect in industries such as electric power, petroleum, natural gas and the like, can improve the reliability of control performance and reduce the difficulty of troubleshooting system faults.
The utility model has the advantages of simple structure, clear air path, high reliability and the like.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present utility model and the core ideas thereof; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (3)
1. A control mechanism for a valve dual solenoid valve redundancy design, comprising: the device comprises a two-position three-way electromagnetic valve A, a two-position three-way electromagnetic valve B, a shuttle valve, a connecting joint, a connecting pipeline and a filtering and reducing valve, wherein an instrument air source is connected with the filtering and reducing valve, the filtering and reducing valve is connected with the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B, the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B are connected with the shuttle valve, all elements are connected through the connecting pipeline and the connecting joint, and the two-position three-way electromagnetic valve A and the two-position three-way electromagnetic valve B are controlled by control signals.
2. The control mechanism for a valve dual solenoid valve redundancy design according to claim 1, wherein said two-position three-way single control solenoid valve a has an input air source port a, a control air output port a and an exhaust port a; the two-position three-way single-control electromagnetic valve B is provided with an input air source port B, a control air output port B and an exhaust port B, the shuttle valve is provided with a P1 end, a P2 end and a P3 end, and the P3 end is used for controlling air output;
the filtering pressure reducing valve is respectively connected with the input air source port A and the input air source port B, the control air output port A is connected with the P1 end, the control air output port B is connected with the P2 end, and control signals are respectively and electrically connected with the magnetic valve A and the magnetic valve B.
3. The valve dual solenoid valve redundant design control of claim 2 wherein said exhaust ports a and B are vented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223571668.0U CN219242769U (en) | 2022-12-30 | 2022-12-30 | Control mechanism for redundant design of double solenoid valves of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223571668.0U CN219242769U (en) | 2022-12-30 | 2022-12-30 | Control mechanism for redundant design of double solenoid valves of valve |
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| Publication Number | Publication Date |
|---|---|
| CN219242769U true CN219242769U (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223571668.0U Active CN219242769U (en) | 2022-12-30 | 2022-12-30 | Control mechanism for redundant design of double solenoid valves of valve |
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|---|---|
| CN (1) | CN219242769U (en) |
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- 2022-12-30 CN CN202223571668.0U patent/CN219242769U/en active Active
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