CN114484056A - Valve control system with redundant design and control method thereof - Google Patents
Valve control system with redundant design and control method thereof Download PDFInfo
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- CN114484056A CN114484056A CN202111459937.1A CN202111459937A CN114484056A CN 114484056 A CN114484056 A CN 114484056A CN 202111459937 A CN202111459937 A CN 202111459937A CN 114484056 A CN114484056 A CN 114484056A
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- 238000013461 design Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002955 isolation Methods 0.000 claims description 79
- 238000001514 detection method Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000007257 malfunction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Devices In Control Systems (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a valve control system with high reliability and redundant design, in particular to a control system for controlling the opening and closing of a valve through the redundant design and a control method thereof. The automatic control system comprises an electric control unit and a group of manual units which are in redundant design, wherein the electric control unit and the manual units are connected in parallel and independently control a main valve to be opened, and each group of electric control unit comprises two electromagnetic valves which are connected in series. Two solenoid valves are two solenoid valve groups of integral type. The invention controls the valve through multi-channel multi-redundancy design, and can realize in-service maintenance and part replacement of the electromagnetic valve. The single electromagnetic valve of the single channel is opened by mistake, the valve can not malfunction, and the reliability of closing the valve is ensured. The closing of the channel can be ensured by closing the single electromagnetic valve of the single channel, and misoperation is prevented. The emergency channel of the manual unit can deal with the emergency situation of failure of the electromagnetic valve, and the normal operation of the valve in various states is effectively ensured.
Description
Technical Field
The invention relates to a valve control system with high reliability and redundant design, in particular to a control system for controlling the opening and closing of a valve through the redundant design and a control method thereof.
Background
With the development of control technology towards higher safety factor, higher requirements are put forward on the reliability of valve control, and particularly on a valve control system for realizing valve opening and closing control through pilot control. The independent control system cannot meet the requirements of maintenance and replacement of in-service parts, and cannot deal with emergency starting or closing of the valve in the case of emergency, so that the reliability of opening and closing of the valve cannot be guaranteed, and a greater safety risk exists in application.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a valve control system with multiple redundancy designs and a control method thereof, which achieve the reliability of in-service maintenance and control of valves.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the valve control system with the redundancy design comprises an electric control unit with the redundancy design and a group of manual units, wherein the electric control unit and the manual units are connected in parallel and independently control a main valve to be opened, and each group of electric control unit comprises two electromagnetic valves connected in series. Two solenoid valves are two solenoid valve groups of integral type.
Based on the technical scheme, the redundancy design means that certain key equipment or components are repeatedly configured, when the system fails, the redundant equipment or components are involved in work to take the functions of the damaged equipment or components, service is provided for the system, and the occurrence of a downtime event is reduced. Namely, the reliability of the system is improved by designing two or more sets of the same electric control units which are relatively independently configured.
Furthermore, two electromagnetic valves connected in series in each group of electric control units are electromagnetic valve groups of a duplex integrated pilot structure with valve position signal detection devices, and each electromagnetic valve is provided with a valve position signal detection device.
Based on the technical scheme, after two electromagnetic valves in the valve group are opened simultaneously, the valve group is allowed to be conducted; when any electromagnetic valve is in a closed position, the valve group is in a closed state; the mistaken opening of any electromagnetic valve can not cause the mistaken opening of the main valve.
Furthermore, each group of electric control units is provided with an isolation unit for cutting off the electric control unit.
Furthermore, the isolation unit comprises an electric control unit manual isolation valve and an electric control unit valve locking device, the electric control unit manual isolation valve is connected to the front ends of the two electromagnetic valves in series along the flowing direction of fluid in the valves, the electric control unit manual isolation valve is provided with the electric control unit valve locking device to lock the open position of the electric control unit manual isolation valve, and the electric control unit manual isolation valve is provided with an electric control unit manual isolation valve position switch.
Based on above-mentioned technical scheme, the manual isolation valve of electrical unit is normally open state, and electrical unit valve locking device opens the position locking to the manual isolation valve of electrical unit, and the isolation that can realize this group of electrical unit is closed to the manual isolation valve of electrical unit, can maintain and part change internals like the solenoid valve.
Furthermore, the manual unit comprises a manual unit manual isolation valve and a manual unit valve locking device, the manual unit manual isolation valve is provided with a manual unit manual isolation valve position switch, and the on-off of the manual unit manual isolation valve is controlled by the on-off of the manual unit manual isolation valve.
Based on the technical scheme, the emergency channel of the valve is controlled through the manual unit, so that the failure of an electric control system is avoided, and the main valve is quickly opened. The manual isolation valve of the manual unit is in a normally closed state, and the manual unit valve locking device is used for locking the manual isolation valve of the manual unit in a closed position.
Further, the electric control units are divided into two groups. The two groups are configured in the same way and are mutually standby, and can be opened independently or simultaneously, and once one group fails, the other group can realize the normal opening function of the valve.
The valve control method of the redundant design, control the main valve through a plurality of control units, each control unit forms an independent valve and opens the channel, when one or more control units open, the valve is opened; the control unit comprises a redundant electric control unit and a group of manual units, wherein each group of electric control units realizes the opening and closing of the opening channel of the valve through two control nodes, the two control nodes are opened simultaneously, the channel is communicated, any one of the two control nodes is closed, and the channel is closed.
Furthermore, each control node determines the opening and closing state through a valve position signal detection device; the opening or closing of each control node is realized through electromagnetic valves, and the two electromagnetic valves are electromagnetic valve groups with a duplex integrated pilot structure and provided with a valve position signal detection device.
Furthermore, the two groups of electric control units are arranged in the same way and are mutually standby, and the two groups of electric control units can be independently or simultaneously started; each group of electric control units is provided with an electric control unit manual isolation valve, the valve opening channel is cut off through the electric control unit manual isolation valve, the electric control unit manual isolation valve is in a normally open state, and the opening position of the electric control unit manual isolation valve is locked through an electric control unit valve locking device when the electric control unit manual isolation valve is opened.
Furthermore, the manual unit is a standby emergency channel of the electric control unit, the manual unit cuts off or opens the valve opening channel through a manual isolation valve of the manual unit, the opening and closing state of the manual isolation valve of the manual unit is monitored through a position switch of the manual unit, the manual isolation valve of the manual unit is in a normally closed state, and the manual isolation valve of the manual unit is closed and locked through a valve locking device of the manual unit.
The invention has the beneficial effects that: the invention controls the valve through multi-channel multi-redundancy design, and can realize in-service maintenance and part replacement of the electromagnetic valve. The single electromagnetic valve of the single channel is opened by mistake, the valve can not malfunction, and the reliability of closing the valve is ensured. The closing of the channel can be ensured by closing the single electromagnetic valve of the single channel, and misoperation is prevented. The emergency channel of the manual unit can deal with the emergency situation of failure of the electromagnetic valve, and the normal operation of the valve in various states is effectively ensured.
Drawings
FIG. 1 is a control schematic of the present invention;
FIG. 2 is a control diagram for opening the channel of the electronic control unit A;
FIG. 3 is a control diagram of the channel opening of the electronic control unit B;
FIG. 4 is a control diagram for opening the channel A + B of the electronic control unit;
FIG. 5 is a control diagram of emergency access opening of the manual control unit;
FIG. 6 is a valve closure control diagram;
in the figure: v11 and V21 are manual isolation valves of an electric control unit provided with an electric control unit valve locking device, V31 is a manual isolation valve of a manual unit provided with a manual unit valve locking device, 11.3 and 21.3 are manual isolation valve position switches of the electric control unit, 31.3 is a manual isolation valve position switch of the manual unit, SV11, SV12, SV21 and SV22 are electromagnetic valves, and 11.1, 11.2, 12.1, 12.2, 21.1, 21.2, 22.1 and 22.2 are electromagnetic valve position signal detection devices.
Detailed Description
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawing 1, in order to ensure the high reliability of control, the control principle of three-channel high-reliability redundancy design is adopted to realize the reliability of valve control, and specifically, the redundancy-designed valve control system comprises two groups of channels A and B which are controlled by the same electric control system, and also comprises a group of emergency channels controlled by a manual system, wherein the two groups of electric control systems and the manual system are arranged in parallel; each group of electric control units is sequentially connected with an electric control unit manual isolation valve and two electromagnetic valves in series, the electric control unit manual isolation valve is used for cutting off the electric control unit, an electric control unit valve locking device is arranged on the electric control unit manual isolation valve, the electric control unit manual isolation valve is in a normally open state, and the electric control unit valve locking device locks the open position of the electric control unit manual isolation valve; the electromagnetic valves are specially designed electromagnetic valve groups with a duplex integrated pilot structure and provided with valve position signal detection devices, and after two electromagnetic valves in the valve groups are opened simultaneously, the valve groups are allowed to be conducted; when any electromagnetic valve is in a closed position, the valve group is in a closed state; the mistaken opening of any electromagnetic valve can not cause the mistaken opening of the main valve. The manual unit controls an emergency channel of the valve, the manual unit comprises a manual unit manual isolation valve and a manual unit valve locking device, the manual unit manual isolation valve is in a normally closed state, the manual unit valve locking device locks the manual unit manual isolation valve in a closed position, the manual unit manual isolation valve is provided with a manual unit manual isolation valve position switch, and the on-off of the manual unit manual isolation valve controls the on-off of the manual unit.
The invention has the beneficial effects that: the method of double-channel double-electromagnetic-valve and single emergency channel manual control is adopted, and high reliability of the control system is achieved. And during normal operation, the channel A and the channel B are simultaneously opened, and the control valve is quickly opened. The purpose of quick opening can also be realized by opening the independent channel. The dual-channel configuration can realize in-service maintenance and part replacement of the electromagnetic valve. The single electromagnetic valve of the single channel is opened by mistake, the valve can not malfunction, and the reliability of closing the valve is ensured. Closing of a single solenoid valve for a single passage ensures closing of that passage.
The control principle will be explained with reference to fig. 2-6.
1. Valve opening mode
(1) Channel A is conducted
The a channel opening procedure refers to fig. 2.
The channel A is opened, the electric control unit manual isolation valve V11 is in a full-open state, and the electric control unit manual isolation valve position switch 11.3 is closed; the electromagnetic valves SV11 and SV12 are electrified, the electromagnetic valves SV11 and SV12 are opened, the electromagnetic valve position signal detection devices 11.1 and 12.1 are closed, the valve position signal detection device 11.2/12.2 is disconnected, the electromagnetic pilot valve outputs a valve opening signal, the channel A is conducted, and the valve is opened.
The maintenance and part replacement of the A channel electromagnetic valve can be realized by closing the electric control unit manual isolation valve V11 provided with the electric control unit valve locking device.
(2) B channel conduction
The B channel opening procedure refers to fig. 3.
The channel B is opened, the electric control unit manual isolation valve V21 is in a full-open state, and the electric control unit manual isolation valve position switch 21.3 is closed; the electromagnetic valves SV21 and SV22 are electrified, the electromagnetic valves SV21 and SV22 are opened, the electromagnetic valve position signal detection devices 21.1 and 22.1 are closed, the electromagnetic valve position signal detection device 21.2/22.2 is disconnected, the electromagnetic pilot valve outputs a valve opening signal, the channel B is connected, and the valve is opened.
The maintenance and part replacement of the B channel electromagnetic valve can be realized by closing the electric control unit manual isolation valve V21 provided with the electric control unit valve locking device.
(3) A + B channel conduction
The a + B channel opening process refers to fig. 4.
This mode of operation involves both channel a conduction and channel B conduction, which will ensure a fast and safe opening of the valve. The channel A and the channel B are used for conducting simultaneously during normal operation, but under emergency conditions, the purpose of quickly opening the valve can be realized by conducting the channels separately.
(4) Emergency channel continuity
If the conduction control of the channel A and the channel B fails simultaneously, in emergency, the manual isolation valve V31 can be opened by opening the manual unit, so that the valve is opened quickly. The on-off state of the manual unit manual isolation valve V31 can be monitored by a manual unit manual isolation valve position switch 31.3: 31.3 closed, V31 is in full open state, whereas V31 is closed. The emergency channel connection process refers to fig. 5.
2. Valve closure
Valve closure flow refers to fig. 6.
The valve should remain closed during normal system operation. At this time, the a passage, the B passage, and the manual isolation valve V31 should be in the closed state at the same time.
a.A passage closure
The solenoid valves SV11 and SV12 are de-energized, the solenoid valve position signal detection devices 11.2 and 12.2 are in a closed state, and the A channel is in a closed state at the moment. If one of the solenoid valves SV11 and SV12 fails to act, the closing of the A channel can be ensured by the action of a single solenoid valve.
b.B passage closure
The solenoid valves SV21 and SV22 are de-energized, the solenoid valve position signal detection devices 21.2 and 22.2 are in a closed state, and the B channel is in a closed state. If one of the solenoid valves SV21 and SV22 fails to act, the B channel can be ensured to be closed by the action of a single solenoid valve.
c.C Emergency Access closure
The manual unit manual isolation valve V31 is closed and the manual unit manual isolation valve position switch 31.3 is in the off state and the emergency passage is closed.
The valve can be closed only in the state that the channel A, the channel B and the emergency channel are closed simultaneously.
The above list is only the preferred embodiment of the present invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (10)
1. Valve control system of redundant design, its characterized in that: the automatic control system comprises an electric control unit and a group of manual units which are in redundant design, wherein the electric control unit and the manual units are connected in parallel and independently control a main valve to be opened, and each group of electric control unit comprises two electromagnetic valves connected in series.
2. The redundantly designed valve control system of claim 1, wherein: two electromagnetic valves connected in series in each group of electric control units are electromagnetic valve groups of a duplex integral pilot structure with valve position signal detection devices, and each electromagnetic valve is provided with a valve position signal detection device.
3. The redundantly designed valve control system of claim 1, wherein: each group of electric control units is provided with an isolation unit for cutting off the electric control unit.
4. The redundantly designed valve control system of claim 3, wherein: the isolation unit comprises an electric control unit manual isolation valve and an electric control unit valve locking device, the electric control unit manual isolation valve is connected to the front ends of the two electromagnetic valves in series along the flowing direction of fluid in the valves, the electric control unit manual isolation valve is provided with the electric control unit valve locking device, the electric control unit manual isolation valve is in a normally open state, the electric control unit valve locking device locks the open position of the electric control unit manual isolation valve, and the electric control unit manual isolation valve is provided with an electric control unit manual isolation valve position switch.
5. The redundantly designed valve control system of claim 1, wherein: the manual unit comprises a manual unit manual isolation valve and a manual unit valve locking device, the manual unit manual isolation valve is in a normally closed state, the manual unit valve locking device is used for locking the manual unit manual isolation valve in a closed position, the manual unit manual isolation valve is provided with a manual unit manual isolation valve position switch, and the on-off of the manual unit manual isolation valve controls the on-off of the manual unit.
6. The redundantly designed valve control system of claim 1, wherein: the electric control units are divided into two groups.
7. The valve control method with the redundant design is characterized in that: the valves are controlled by a plurality of control units, each control unit forms an independent valve opening channel, and when one or more control units are opened, the valves are opened; the control unit comprises a redundant electric control unit and a group of manual units, wherein each group of electric control units realizes the opening and closing of the opening channel of the valve through two control nodes, the two control nodes are opened simultaneously, the channel is communicated, any one of the two control nodes is closed, and the channel is closed.
8. The redundantly designed valve control method of claim 7, wherein: each control node determines the opening and closing state through a valve position signal detection device; the opening or closing of each control node is realized through electromagnetic valves, and the two electromagnetic valves are electromagnetic valve groups with a duplex integrated pilot structure and provided with a valve position signal detection device.
9. The redundantly designed valve control method of claim 7, wherein: the two groups of electric control units are arranged in the same way and are mutually standby, and the two groups of electric control units can be independently or simultaneously started; each group of electric control units is provided with an electric control unit manual isolation valve, the valve opening channel is cut off through the electric control unit manual isolation valve, the electric control unit manual isolation valve is in a normally open state, and the opening position of the electric control unit manual isolation valve is locked through an electric control unit valve locking device when the electric control unit manual isolation valve is opened.
10. The redundantly designed valve control method of claim 7, wherein: the manual unit is a standby emergency channel of the electric control unit, the manual unit cuts off or opens the valve opening channel through a manual isolation valve of the manual unit, the opening and closing state of the manual isolation valve of the manual unit is monitored through a manual unit position switch, the manual isolation valve of the manual unit is in a normally closed state, and the manual isolation valve of the manual unit is closed and locked through a manual unit valve locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111459937.1A CN114484056A (en) | 2021-12-02 | 2021-12-02 | Valve control system with redundant design and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111459937.1A CN114484056A (en) | 2021-12-02 | 2021-12-02 | Valve control system with redundant design and control method thereof |
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| Publication Number | Publication Date |
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| CN114484056A true CN114484056A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111459937.1A Pending CN114484056A (en) | 2021-12-02 | 2021-12-02 | Valve control system with redundant design and control method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1610051A2 (en) * | 2004-06-25 | 2005-12-28 | Ross Controls | Manually operated piloted control-reliable lockout valve |
| CN202484397U (en) * | 2012-03-13 | 2012-10-10 | 成都华科阀门制造有限公司 | Combined electromagnetic valve and valve safety control system based on combined electromagnetic valve |
| CN108431476A (en) * | 2015-11-05 | 2018-08-21 | 柏佛尔德流体动力有限公司 | Valve system |
| CN109707673A (en) * | 2019-02-26 | 2019-05-03 | 江苏力源液压机械有限公司 | A kind of manual/auto integrated two-way rotary shaft hydraulic braking system |
| CN212900955U (en) * | 2020-07-03 | 2021-04-06 | 中广核核电运营有限公司 | Redundant control system of pneumatic isolating valve actuating mechanism |
| CN113028131A (en) * | 2021-02-01 | 2021-06-25 | 中国核电工程有限公司 | Test system and method of main steam quick isolation valve and fast reactor main steam system |
| CN113027848A (en) * | 2021-01-15 | 2021-06-25 | 浙江浙能技术研究院有限公司 | High-reliability electromagnetic valve control system |
| CN214008192U (en) * | 2020-09-30 | 2021-08-20 | 中国核动力研究设计院 | Pilot-operated type safety valve group |
-
2021
- 2021-12-02 CN CN202111459937.1A patent/CN114484056A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1610051A2 (en) * | 2004-06-25 | 2005-12-28 | Ross Controls | Manually operated piloted control-reliable lockout valve |
| CN202484397U (en) * | 2012-03-13 | 2012-10-10 | 成都华科阀门制造有限公司 | Combined electromagnetic valve and valve safety control system based on combined electromagnetic valve |
| CN108431476A (en) * | 2015-11-05 | 2018-08-21 | 柏佛尔德流体动力有限公司 | Valve system |
| CN109707673A (en) * | 2019-02-26 | 2019-05-03 | 江苏力源液压机械有限公司 | A kind of manual/auto integrated two-way rotary shaft hydraulic braking system |
| CN212900955U (en) * | 2020-07-03 | 2021-04-06 | 中广核核电运营有限公司 | Redundant control system of pneumatic isolating valve actuating mechanism |
| CN214008192U (en) * | 2020-09-30 | 2021-08-20 | 中国核动力研究设计院 | Pilot-operated type safety valve group |
| CN113027848A (en) * | 2021-01-15 | 2021-06-25 | 浙江浙能技术研究院有限公司 | High-reliability electromagnetic valve control system |
| CN113028131A (en) * | 2021-02-01 | 2021-06-25 | 中国核电工程有限公司 | Test system and method of main steam quick isolation valve and fast reactor main steam system |
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