CN219953825U - Oxygen shut-off valve control system - Google Patents
Oxygen shut-off valve control system Download PDFInfo
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- CN219953825U CN219953825U CN202320227704.7U CN202320227704U CN219953825U CN 219953825 U CN219953825 U CN 219953825U CN 202320227704 U CN202320227704 U CN 202320227704U CN 219953825 U CN219953825 U CN 219953825U
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- valve
- pneumatic control
- control valve
- electromagnetic
- closing
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000001301 oxygen Substances 0.000 title claims abstract description 43
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 43
- 239000007789 gas Substances 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Abstract
The utility model relates to the technical field of coal chemical industry, in particular to an oxygen shut-off valve control system which comprises an electromagnetic valve, a pneumatic control valve, a cylinder and an air source for supplying air to the electromagnetic valve and the pneumatic control valve; the electromagnetic valve is connected with the pneumatic control valve and used for controlling the conduction of the pneumatic control valve, the pneumatic control valve comprises an opening pneumatic control valve and a closing pneumatic control valve, the pneumatic control valve is connected with the air cylinder, and the electromagnetic valve and the pneumatic control valve are all in redundancy design and are independently supplied by an air source. The utility model provides redundant configuration for the electromagnetic valve and the pneumatic control valve part which are easy to be failed in the control part of the oxygen cut-off valve, thereby improving the stability and the safety of equipment, ensuring the normal operation of the oxygen fuel supply valve of the gasifier and ensuring the safe and stable operation of the unit.
Description
Technical Field
The utility model relates to the technical field of coal chemical industry, in particular to an oxygen shut-off valve control system.
Background
The oxygen shut-off valve is a valve on the oxygen delivery pipeline, which plays a role in quick shut-off or opening, and abnormal closing of the valve can cause shutdown of the process equipment system. Because the medium is oxygen with combustion supporting property, the closing and refusing of the oxygen cut-off valve seriously threatens the safety of the human body and the equipment for ensuring the safety of the human body and the equipment.
The existing oxygen cut-off valve control system is controlled by a single electromagnetic valve, the electromagnetic valve is opened by a live valve, the electromagnetic valve is closed by a power-off valve, and the oxygen cut-off valve is a normally open valve; the electromagnetic valve is electrified frequently, so that the service life of the electromagnetic valve is influenced, excitation faults of an electromagnetic valve coil are easy to cause, misoperation of the electromagnetic valve is caused, an oxygen valve is closed, and after the oxygen valve is closed by mistake, the oxygen raw material is cut off, equipment is stopped due to faults, so that the safe and stable operation of a unit is influenced. The electromagnetic valve is the most important part in the control part, and because the electromagnetic valve is electrified for a long time, the electromagnetic coil is easy to overheat, damage and the like to break down, and the electromagnetic valve is the most easily broken down element in the control system, and when the equipment is abnormal, the valve is closed and refused to operate, and the input of oxygen cannot be cut off, so that the equipment is in great safety risk such as explosion and the like.
Disclosure of Invention
The utility model aims to provide an oxygen cut-off valve control system, which provides redundant configuration for solenoid valves and pneumatic control valve parts, wherein the solenoid valves and the pneumatic control valve parts are easy to fail, so that the stability and the safety of equipment are improved, the normal operation of an oxygen fuel supply valve of a gasification furnace is ensured, the safe and stable operation of a unit is ensured, and the problems pointed out in the background art are solved.
The embodiment of the utility model is realized by the following technical scheme: an oxygen shut-off valve control system comprises an electromagnetic valve, a pneumatic control valve, a cylinder and a gas source for supplying gas to the electromagnetic valve and the pneumatic control valve;
the electromagnetic valve is connected with the pneumatic control valve and used for controlling the conduction of the pneumatic control valve, the pneumatic control valve comprises an opening pneumatic control valve and a closing pneumatic control valve, the pneumatic control valve is connected with the air cylinder, and the electromagnetic valve and the pneumatic control valve are all in redundancy design and are independently supplied by an air source.
According to a preferred embodiment, the electromagnetic valve and the pneumatic control valve adopt a dual redundancy design, and the dual redundancy design comprises a first electromagnetic valve, a second electromagnetic valve, a first valve opening pneumatic control valve, a second valve opening pneumatic control valve, a first valve closing pneumatic control valve and a second valve closing pneumatic control valve.
According to a preferred embodiment, the first electromagnetic valve and the second electromagnetic valve, the first valve opening pneumatic control valve and the second valve opening pneumatic control valve, and the first valve closing pneumatic control valve and the second valve closing pneumatic control valve are respectively connected in series for gas circuit connection.
According to a preferred embodiment, the first electromagnetic valve and the second electromagnetic valve are both in a power-off action mode.
According to a preferred embodiment, when both the first electromagnetic valve and the second electromagnetic valve are powered off, the air supply air path of the first electromagnetic valve is conducted and output to the second electromagnetic valve in an air supply conducting state, air supply pressure is respectively transmitted to the first valve opening pneumatic control valve and the first valve closing pneumatic control valve which are connected in series, after the air supply of the first valve opening pneumatic control valve is conducted, the air supply pressure is transmitted to the second valve opening pneumatic control valve in the air supply conducting state and the power air is transmitted to the valve opening direction of the air cylinder, at the moment, the first valve closing pneumatic control valve and the second valve closing pneumatic control valve are both in an air exhaust conducting state, and no power air enters the valve closing direction of the air cylinder;
when any one of the first electromagnetic valve and the second electromagnetic valve is electrified, the first electromagnetic valve and the second electromagnetic valve supply the first valve opening pneumatic control valve, the second valve opening pneumatic control valve, the first valve closing pneumatic control valve and the second valve closing pneumatic control valve, so that the air supply pressure of the first valve opening pneumatic control valve and the air supply pressure of the second valve closing pneumatic control valve are lost, and the air supply direction and the air exhaust direction of the pneumatic control valve are switched.
According to a preferred embodiment, the gas source is a gas reservoir.
According to a preferred embodiment, the air reservoir is provided with a non-return valve.
According to a preferred embodiment, the gas source consists of a first gas reservoir and a second gas reservoir.
According to a preferred embodiment, the first air storage tank and the second air storage tank adopt independent redundancy design.
According to a preferred embodiment, a filtering pressure reducing valve is arranged in front of the air inlet ends of the electromagnetic valve and the pneumatic control valve.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects: the oxygen cut-off valve control system provided by the utility model provides redundant configuration for the electromagnetic valve and the pneumatic control valve part which are easy to fail in the oxygen cut-off valve control part, so that the safety and stability of a valve control loop can be ensured, the reliability of opening and closing actions of the valve in an emergency state can be ensured, the stability and safety performance of equipment are improved, the normal operation of an oxygen fuel supply valve of a gasification furnace can be ensured, and the safe and stable operation of a unit can be ensured.
Drawings
Fig. 1 is a control schematic diagram of an oxygen shutoff valve control system according to embodiment 1 of the present utility model.
Icon: 1-a first air storage tank, 2-a second air storage tank, 3-a filtering pressure reducing valve, 4-a first electromagnetic valve, 5-a second electromagnetic valve, 6-a first valve opening pneumatic control valve, 7-a second valve opening pneumatic control valve, 8-a first valve closing pneumatic control valve, 9-a second valve closing pneumatic control valve and 10-an air cylinder.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
In order to improve the stability and safety of the device, and ensure the normal operation of the oxygen fuel supply valve of the gasifier and ensure the safe and stable operation of the unit under the premise of ensuring safety, the embodiment discloses an oxygen cut-off valve control system, please refer to fig. 1, which is a control schematic diagram of the oxygen cut-off valve control system, the system comprises: solenoid valve, pneumatic valve, cylinder 10 and air supply for supplying air to solenoid valve, pneumatic valve.
The electromagnetic valve is connected with the pneumatic control valve and is used for controlling the conduction of the pneumatic control valve; the pneumatic control valve comprises an opening pneumatic control valve and a closing pneumatic control valve, the pneumatic control valve is connected with the cylinder 10, and the electromagnetic valve and the pneumatic control valve are all in redundancy design and are independently supplied by an air source. The opening/closing of the pneumatic control valve is output to the electromagnetic valve in the form of an electric signal by the control system, the electromagnetic valve converts the electric signal into a pneumatic signal, and finally the pneumatic signal drives the cylinder 10 to act, and the pneumatic control valve is driven to open/close by the cylinder 10. The embodiment provides redundant configuration for the electromagnetic valve and the pneumatic control valve part which are easy to fail in the control part of the oxygen cut-off valve, so that the safety and stability of a valve control loop can be ensured, the reliability of opening and closing actions under the emergency state of the valve can be ensured, the stability and safety performance of equipment are improved, the oxygen fuel supply valve of the gasifier can work normally, and the safe and stable operation of a unit is ensured.
In the preferred embodiment, the solenoid valve and the pneumatic control valve adopt a dual redundancy design, and the dual redundancy design comprises a first solenoid valve 4, a second solenoid valve 5, a first valve opening pneumatic control valve 6, a second valve opening pneumatic control valve 7, a first valve closing pneumatic control valve 8 and a second valve closing pneumatic control valve 9. The first electromagnetic valve 4 and the second electromagnetic valve 5, the first valve opening pneumatic control valve 6 and the second valve opening pneumatic control valve 7, and the first valve closing pneumatic control valve 8 and the second valve closing pneumatic control valve 9 are respectively connected in series to be connected in a gas path.
In the embodiment, the electromagnetic valve is considered to be the most important part in the control part, because the electromagnetic valve is electrified for a long time, the electromagnetic coil is easy to overheat, damage and the like to cause faults, and the electromagnetic valve is also the most fault-prone element in the control system, when the oxygen cut-off valve is a normally open valve, the battery valve is electrified, so that the service life of the electromagnetic valve can be influenced, the excitation faults and the like of the electromagnetic valve coil can be caused, the electromagnetic valve is wrongly operated, the oxygen cut-off valve is closed, and after the oxygen cut-off valve is wrongly closed, the oxygen raw material is switched, so that equipment fault shutdown is caused, and the safe and stable operation of a unit is influenced; when the equipment is abnormal, the oxygen cut-off valve is refused to operate, and if the oxygen input cannot be cut off, the safety risk hidden danger such as equipment explosion and the like exists. Therefore, in this embodiment, the first electromagnetic valve 4 and the second electromagnetic valve 5 are both in a power-off action mode, that is, the electromagnetic valve is powered off to open the gate.
In the preferred embodiment, when both the first electromagnetic valve 4 and the second electromagnetic valve 5 are powered off, the air supply channel of the first electromagnetic valve 4 is conducted and the air supply channel is output to the second electromagnetic valve 5 in an air supply conducting state, the air supply pressure is respectively transmitted to the first valve opening pneumatic control valve 6 and the first valve closing pneumatic control valve 8 which are connected in series, after the air supply of the first valve opening pneumatic control valve 6 is conducted, the air supply pressure is transmitted to the second valve opening pneumatic control valve 7 in the air supply conducting state and the power air transmission value cylinder 10 is opened, at the moment, the first valve closing pneumatic control valve 8 and the second valve closing pneumatic control valve 9 are both in an air exhaust conducting state, and no power air enters the valve closing direction of the cylinder 10; when any one of the first electromagnetic valve 4 and the second electromagnetic valve 5 is electrified, the first electromagnetic valve 4 and the second electromagnetic valve 5 supply the air supply pressure of the first valve opening air control valve 6, the second valve opening air control valve 7, the first valve closing air control valve 8 and the second valve closing air control valve 9 to be lost, and the air control valves switch the air inlet and exhaust directions.
In a preferred embodiment, the air source is an air storage tank, the air storage tank is provided with a check valve, the air source consists of a first air storage tank 1 and a second air storage tank 2, and the first air storage tank 1 and the second air storage tank 2 adopt independent redundancy design.
In a preferred embodiment, a filtering pressure reducing valve 3 is arranged in front of the air inlet ends of the electromagnetic valve and the pneumatic control valve, impurities in the air are filtered through the filtering pressure reducing valve 3, and the air source pressure is adjusted to be proper.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. An oxygen shut-off valve control system is characterized by comprising an electromagnetic valve, a pneumatic control valve and a cylinder (10), and a gas source for supplying gas to the electromagnetic valve and the pneumatic control valve;
the electromagnetic valve is connected with the pneumatic control valve and used for controlling the conduction of the pneumatic control valve, the pneumatic control valve comprises an opening pneumatic control valve and a closing pneumatic control valve, the pneumatic control valve is connected with the air cylinder (10), and the electromagnetic valve and the pneumatic control valve are all in redundancy design and are independently supplied by an air source;
the electromagnetic valve and the pneumatic control valve adopt a double redundancy design and comprise a first electromagnetic valve (4), a second electromagnetic valve (5), a first valve opening pneumatic control valve (6), a second valve opening pneumatic control valve (7), a first valve closing pneumatic control valve (8) and a second valve closing pneumatic control valve (9).
2. The oxygen shut-off valve control system according to claim 1, wherein the first solenoid valve (4) and the second solenoid valve (5), the first valve-opening pneumatic control valve (6) and the second valve-opening pneumatic control valve (7), and the first valve-closing pneumatic control valve (8) and the second valve-closing pneumatic control valve (9) are connected in series respectively to perform gas circuit connection.
3. The oxygen shut-off valve control system of claim 2, wherein the first solenoid valve (4) and the second solenoid valve (5) are both in the form of a de-energized action.
4. The oxygen shut-off valve control system according to claim 3, wherein when both the first electromagnetic valve (4) and the second electromagnetic valve (5) are powered off, the first electromagnetic valve (4) is connected with the gas supply path and outputs to the second electromagnetic valve (5) in a gas supply conducting state, the gas supply pressure is respectively transmitted to the first valve-opening pneumatic control valve (6) and the first valve-closing pneumatic control valve (8) which are connected in series, the first valve-opening pneumatic control valve (6) transmits the gas supply pressure to the second valve-opening pneumatic control valve (7) in the gas supply conducting state after gas supply is conducted, and the power gas transmission valve cylinder (10) is opened, at this time, the first valve-closing pneumatic control valve (8) and the second valve-closing pneumatic control valve (9) are both in an exhaust conducting state, and no power gas enters the valve-closing direction of the cylinder (10);
when any one of the first electromagnetic valve (4) and the second electromagnetic valve (5) is electrified, the first electromagnetic valve (4) and the second electromagnetic valve (5) supply air supply pressure of the first valve opening air control valve (6), the second valve opening air control valve (7), the first valve closing air control valve (8) and the second valve closing air control valve (9) to be lost, and the air control valves switch air inlet and exhaust directions.
5. The oxygen shut-off valve control system of any one of claims 1 to 4, wherein the gas source is a gas reservoir.
6. The oxygen shutoff valve control system of claim 5, wherein the reservoir is provided with a check valve.
7. The oxygen shut-off valve control system of claim 6, wherein the gas source is comprised of a first gas reservoir (1) and a second gas reservoir (2).
8. The oxygen shut-off valve control system of claim 7, wherein the first and second gas tanks (1, 2) are of independent redundant design.
9. The oxygen shut-off valve control system of claim 8, wherein a filter relief valve (3) is provided in front of the inlet end of the solenoid valve and the pneumatic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320227704.7U CN219953825U (en) | 2023-02-14 | 2023-02-14 | Oxygen shut-off valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320227704.7U CN219953825U (en) | 2023-02-14 | 2023-02-14 | Oxygen shut-off valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953825U true CN219953825U (en) | 2023-11-03 |
Family
ID=88537596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320227704.7U Active CN219953825U (en) | 2023-02-14 | 2023-02-14 | Oxygen shut-off valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953825U (en) |
-
2023
- 2023-02-14 CN CN202320227704.7U patent/CN219953825U/en active Active
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