CN110953392A - Automatic control system for valve of Limitorque actuator integrated into bonded bank - Google Patents
Automatic control system for valve of Limitorque actuator integrated into bonded bank Download PDFInfo
- Publication number
- CN110953392A CN110953392A CN201911351897.1A CN201911351897A CN110953392A CN 110953392 A CN110953392 A CN 110953392A CN 201911351897 A CN201911351897 A CN 201911351897A CN 110953392 A CN110953392 A CN 110953392A
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- Prior art keywords
- valve
- bonded
- limitorque
- actuator
- bank
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/042—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
- F16K31/045—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means with torque limiters
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
- F16K31/048—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means with torque limiters
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an automatic control system for integrating a Limitorque actuator into a bonded base valve, which comprises a bonded base valve and a control room, wherein the bonded base electric valve is provided with a valve feedback annunciator and an on/off valve commander, the valve feedback annunciator and the on/off valve commander are connected with the Limitorque actuator through cables, the control room is connected with the Limitorque actuator through cables, and the control room is connected with the valve feedback annunciator and the on/off valve commander through cables. This Limitorque executor fuses bonded library valve automatic control system, not only can electronic/manual operation at the scene, and can this valve of remote operation in the central control room, it is accurate to open or close information display in place, the automatic switch bonded library valve of being convenient for, and bonded library valve in case the trouble can in time show, convenient quick maintains bonded library valve, and bonded library valve when breaking down, be convenient for carry out manual rotation hand wheel to bonded library valve, open or close, facilitate the use.
Description
Technical Field
The invention relates to the related technical field of bonded libraries, in particular to a valve automatic control system for integrating a Limitatorqe actuator into a bonded library.
Background
At present, the bonded warehouse refers to a warehouse which is approved by customs and is used for storing imported goods without being managed by a tariff law and an import regulation rule, the imported goods stored in the bonded warehouse can be modified, graded, sampled, mixed, reprocessed and the like in the warehouse after approval, if the imported goods are exported again, the bonded tax is not needed to be paid, if the imported goods enter a domestic market, the bonded tax is needed to be paid, all countries have clear regulations on the storage period of the bonded warehouse goods, the bonded warehouse is set to facilitate the trader and promote the switching trade, so that the valves of the bonded warehouse have an important function of protecting the goods in the bonded warehouse and also facilitating the storage of the goods, thereby avoiding the loss, the bonded warehouse valves are pipeline accessories which are used for opening and closing pipelines, controlling the flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, and according to the functions of the valves, the valves can be divided into shut-off valves, check valves, regulating valves and the like, the bonded warehouse valves are control components in a fluid storage system, have the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, are used for valves of a fluid control system, and range from the simplest stop valves to various valves used in a very complicated automatic control system, and have quite various varieties and specifications.
However, when the actuator is generally replaced, a valve feedback signal line and a valve opening/closing command line are not connected, and only power cables are connected, so that the remote computer operation cannot be carried out in a central control room, the condition of the valve is unclear, whether the valve has a fault or not is unclear, the valve can be operated only by field electric/manual operation, the working pressure is improved, the full-automatic work is inconvenient, the use is inconvenient, and the working efficiency is influenced.
Disclosure of Invention
The invention aims to provide a valve automatic control system with a Limitorque actuator integrated into a bonded base, which aims to solve the problems that the common valve feedback signal line and the valve opening/closing command line are not connected and only connected with a power supply cable when the actuator is replaced in the background technology, and finally the problems that the remote computer operation cannot be carried out in a central control room, the valve condition is not clear, whether the valve has a fault or not is unknown, the on-site electric/manual operation can be carried out only, the working pressure is increased, the full-automatic work is inconvenient, the use is inconvenient, and the working efficiency is influenced are solved.
In order to achieve the purpose, the invention provides the following technical scheme: the automatic control system for the valve of the bonded base with the Limitorque actuator comprises a bonded base valve and a control room, wherein the bonded base electric valve is provided with a valve feedback annunciator and an on/off valve commander, the valve feedback annunciator and the on/off valve commander are connected with the Limitorque actuator through cables, the control room is connected with the Limitorque actuator through cables, and the control room is connected with the valve feedback annunciator and the on/off valve commander through cables.
Preferably, the control room comprises a central processing unit and a video display device, the central processing unit analyzes and processes the signal transmitted by the valve feedback annunciator, and the valve feedback annunciator transmits the signal to the video display device for display.
Preferably, the bonded bank electrically operated valve sends a signal to the control room through the valve feedback annunciator, and the central processing unit in the control room analyzes the signal and then sends the signal to the on/off valve commander, so that the on/off valve commander sends the signal to the Limitorque actuator.
Preferably, the Limitorque actuator comprises a position positioner, a motor, a speed reducer, a torque stroke limiter, a switch control box, a hand wheel, a mechanical limiting device and a position transmitter, and the Limitorque actuator is used for debugging and troubleshooting by rotating the hand wheel.
Preferably, the position locator amplifies the control signal in comparison with the position feedback signal and transmits the amplified control signal to the motor.
Preferably, the torque stroke limiter is arranged in the speed reducer to decelerate the speed reducer and protect elements.
Preferably, the Limitorque actuator is electrically connected with the bonded bank valve through a cable, and the Limitorque actuator guides the bonded bank valve to be opened and closed.
Preferably, the electric valve of the bonded bank has two forms of a rotary valve and a multi-rotary valve, the rotary valve has four types of a plug valve, a ball valve, a butterfly valve and an air door, and the multi-rotary valve has three types of a straight-through valve, a gate valve and a knife gate valve.
Preferably, the rotary valve is operated by a 90 ° rotation via a limilorque actuator.
Preferably, the multi-rotary valve is operated by linear driving by a limilorque actuator.
Compared with the prior art, the invention has the beneficial effects that: the Limitorque actuator is integrated into a bonded bank valve automatic control system, so that the bonded bank valve can be conveniently turned on and off, and can be conveniently remotely monitored, repaired in time and used when a fault occurs, and the bonded bank valve can be conveniently manually turned by a hand wheel to be opened or closed when the bonded bank valve fails, so that the bonded bank valve is convenient to use;
1. the bonded bank valve can be electrically/manually operated on site to open or close the bonded bank valve, and can be remotely operated in a central control room, so that the working efficiency is improved, the working pressure is reduced, and the bonded bank valve is convenient to use;
2. the information that the bonded bank valve is opened or closed in place is displayed accurately, the bonded bank valve is convenient to open and close automatically, the bonded bank valve is convenient to use, working procedures are reduced, the bonded bank valve is convenient to open and close strangely and accurately, the bonded bank valve is opened or closed in a one-to-one correspondence mode according to needs, and the bonded bank valve is convenient to use;
3. the valve of the bonded bank can be timely displayed once the valve fails, so that the valve of the bonded bank can be conveniently and quickly maintained and conveniently used, and the valve of the bonded bank can be conveniently and timely maintained, so that the valve of the bonded bank can be conveniently and quickly reapplied to actual work, is convenient to use, and avoids loss;
4. the strong technical support is made for replacing the bonded bank valve actuator, so that the bonded bank valve actuator is convenient to install and fix quickly, is convenient to use, avoids increasing the cost and is convenient to use.
Drawings
FIG. 1 is a schematic view of the working process of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a Limitorque executor fuses bonded storehouse valve automatic control system, includes bonded storehouse valve, Limitorque executor, valve feedback signal ware, on/off valve commander, cable and control room, bonded storehouse electric valve installs valve feedback signal ware and on/off valve commander, and valve feedback signal ware and on/off valve commander all are connected with the Limitorque executor through the cable, the control room is connected with the Limitorque executor through the cable, and the control room is connected with valve feedback signal ware and on/off valve commander all through the cable.
If the control room in fig. 1 includes a central processing unit and a video display device, the central processing unit analyzes and processes the signal transmitted by the valve feedback annunciator, and the signal is transmitted by the valve feedback annunciator to the video display device for display, thereby facilitating the guidance of the opening and closing work of the electric valve in the bonded bank, and facilitating the reception and display of the signal transmitted by the electric valve in the bonded bank.
For example, in fig. 1, the electric valve in the duty bank sends a signal to the control room through the valve feedback annunciator, and the central processing unit in the control room analyzes the signal and then sends the signal to the on/off valve commander, so that the on/off valve commander sends the signal to the Limitorque executor, thereby facilitating the receiving and processing of the signal transmitted by the electric valve in the duty bank, and simultaneously facilitating the timely monitoring of the fault of the electric valve in the duty bank, the timely processing and the convenient use.
Like in fig. 1, the Limitorque actuator includes a position locator, a motor, a reducer, a torque stroke limiter, a switch control box, a hand wheel, a mechanical limiting device and a position transmitter, and the Limitorque actuator is debugged and troubleshot by rotating the hand wheel, so that the Limitorque actuator is convenient for receiving and processing signals, and guiding the work of the motor inside the Limitorque actuator, and is convenient for use.
Like the amplified transmission of position locator in figure 1 with control signal and position feedback signal contrast in the motor, the signal that position locator sent central processing unit conveying is received and is handled, thereby be convenient for instruct the motor, the going on of convenient work, avoid appearing the error, facilitate the use, moment stroke limiter sets up the inside at the reduction gear in figure 1, slow down and the protection component to the reduction gear, be convenient for protect the reduction gear, also be convenient for protect the Limitorque executor simultaneously, avoid appearing damaging, influence the use.
For example, in fig. 1, the Limitorque actuator is electrically connected with the bonded base valve through a cable, and the Limitorque actuator guides the opening and closing of the bonded base valve, so that the Limitorque actuator is convenient for receiving and processing signals, opening and closing of the bonded base valve are convenient, and the bonded base valve is convenient to use.
If the electric valve of the bonded bank in the figure 1 has two forms of a rotary valve and a multi-rotary valve, the rotary valve has four types of a plug valve, a ball valve, a butterfly valve and an air door, the multi-rotary valve has three types of a straight-through valve, a gate valve and a knife gate valve, different electric valves of the bonded bank can be conveniently arranged according to requirements, the electric valve is convenient to use and operate, if the rotary valve in the figure 1 carries out 90-degree rotation operation through a Limitorrque actuator, different valves can be used according to the operation mode, if the multi-rotary valve in the figure 1 carries out linear driving operation through the Limitorrque actuator, and when the linear driving operation is used, the multi-rotary valve is used, the electric valve of the bonded bank can be conveniently opened, and the operation tax can be conveniently used.
The working principle is as follows: when the Limitorque actuator is used to be integrated into a bonded bank valve automatic control system, firstly, the bonded bank electric valve is installed in a bonded bank, then a valve feedback annunciator and an on/off valve commander are arranged on the bonded bank electric valve, when the valve feedback annunciator on the bonded bank electric valve transmits signals to a central processor and a video display device in a control room through a cable, then the central processor analyzes and processes the transmitted signals through the cable, so as to be convenient for understanding the condition of the bonded bank electric valve, then an indication signal is transmitted to the on/off valve commander through the cable, then the on/off valve commander transmits the signals to the Limitorque actuator through the cable, a position positioner in the Limitorque actuator compares and amplifies the control signals with the position feedback signals and transmits the amplified signals to a motor, and then the position positioner receives and processes the signals transmitted by the central processor, thereby be convenient for instruct the motor through the cable, the motor carries out the during operation, the speed reducer carries out speed control to the motor, moment stroke limiter protects the speed reducer simultaneously, avoid the condition that the speed reducer appears damaging, thereby be convenient for the motor drives the bonded bank electrically operated valve and carries out work, conveniently open or close, convenient to use, when bonded bank electrically operated valve breaks down, through the cable, valve feedback signal ware transmission signal gives video display device, thereby be convenient for know the condition of trouble, then through rotating the hand wheel, be convenient for control Limitorque executor, also be convenient for carry out automatic opening and closing to bonded bank electrically operated valve, facilitate the use, this is exactly that Limitorque executor fuses into the whole process that bonded bank valve automatic control system used.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a Limitorque executor fuses bonded library valve automatic control system, includes bonded library valve and control room, its characterized in that: the bonded bank electric valve is provided with a valve feedback annunciator and an on/off valve commander, the valve feedback annunciator and the on/off valve commander are connected with a Limititor que actuator through cables, the control room is connected with the Limititor que actuator through cables, and the control room is connected with the valve feedback annunciator and the on/off valve commander through cables.
2. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 1, wherein: the control room comprises a central processing unit and a video display device, the central processing unit analyzes and processes signals transmitted by the valve feedback annunciator, and meanwhile, the valve feedback annunciator transmits the signals to the video display device for display.
3. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 1, wherein: the bonded bank electric valve sends a signal to the control room through the valve feedback annunciator, and meanwhile, a central processing unit in the control room analyzes the signal and then sends the signal to the on/off valve commander, so that the on/off valve commander sends the signal to the Limitorque actuator.
4. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 1, wherein: the Limitorque executor comprises a position positioner, a motor, a speed reducer, a torque stroke limiter, a switch control box, a hand wheel, a mechanical limiting device and a position transmitter, and is debugged and troubleshooting by rotating the hand wheel.
5. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 4, wherein: the position localizer compares the control signal with the position feedback signal, amplifies and transmits the control signal and the position feedback signal to the motor.
6. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 4, wherein: the moment stroke limiter is arranged in the speed reducer and used for reducing the speed of the speed reducer and protecting elements.
7. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 1, wherein: the Limitorque executor is electrically connected with the bonded base valve through a cable, and simultaneously guides the bonded base valve to be opened and closed.
8. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 1, wherein: the electric valve of the bonded bank has two forms of a rotary valve and a multi-rotary valve, the rotary valve has four types of a plug valve, a ball valve, a butterfly valve and an air door, and the multi-rotary valve has three types of a straight-through valve, a gate valve and a knife gate valve.
9. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 7, wherein: the rotary valve is operated by 90 ° rotation by a limilorque actuator.
10. The automatic valve control system for integrating the Limitorque actuator into the bonded bank as claimed in claim 7, wherein: the multi-rotary valve is operated by linear driving by a limilorque actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911351897.1A CN110953392A (en) | 2019-12-25 | 2019-12-25 | Automatic control system for valve of Limitorque actuator integrated into bonded bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911351897.1A CN110953392A (en) | 2019-12-25 | 2019-12-25 | Automatic control system for valve of Limitorque actuator integrated into bonded bank |
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| Publication Number | Publication Date |
|---|---|
| CN110953392A true CN110953392A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911351897.1A Pending CN110953392A (en) | 2019-12-25 | 2019-12-25 | Automatic control system for valve of Limitorque actuator integrated into bonded bank |
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| CN (1) | CN110953392A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047746A (en) * | 1989-05-27 | 1990-12-12 | 机械电子工业部上海工业自动化仪表研究所 | Intelligent electric activator |
| JPH0523811A (en) * | 1991-07-15 | 1993-02-02 | Kawasaki Steel Corp | Method for controlling molten metal surface level in continuous casting |
| CN2348422Y (en) * | 1998-04-14 | 1999-11-10 | 孙茂钊 | Intelligent electronic electric actuator |
| CN203549065U (en) * | 2013-11-17 | 2014-04-16 | 华北电力大学（保定） | Isolated digital type electric actuator controller |
| CN204284593U (en) * | 2014-11-20 | 2015-04-22 | 天津市希思特电子科技有限公司 | High-precision electric final controlling element |
| CN204695061U (en) * | 2015-06-23 | 2015-10-07 | 刘波麟 | A kind of intelligent electric activator |
| CN106885036A (en) * | 2017-03-27 | 2017-06-23 | 苏州虞创智能仪表科技有限公司 | A kind of safe type intelligent valve positioner for being capable of feedback signal |
| CN106949302A (en) * | 2017-04-05 | 2017-07-14 | 苏州虞创智能仪表科技有限公司 | It is a kind of can remote adjustment valve opening intelligent valve positioner |
-
2019
- 2019-12-25 CN CN201911351897.1A patent/CN110953392A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047746A (en) * | 1989-05-27 | 1990-12-12 | 机械电子工业部上海工业自动化仪表研究所 | Intelligent electric activator |
| JPH0523811A (en) * | 1991-07-15 | 1993-02-02 | Kawasaki Steel Corp | Method for controlling molten metal surface level in continuous casting |
| CN2348422Y (en) * | 1998-04-14 | 1999-11-10 | 孙茂钊 | Intelligent electronic electric actuator |
| CN203549065U (en) * | 2013-11-17 | 2014-04-16 | 华北电力大学（保定） | Isolated digital type electric actuator controller |
| CN204284593U (en) * | 2014-11-20 | 2015-04-22 | 天津市希思特电子科技有限公司 | High-precision electric final controlling element |
| CN204695061U (en) * | 2015-06-23 | 2015-10-07 | 刘波麟 | A kind of intelligent electric activator |
| CN106885036A (en) * | 2017-03-27 | 2017-06-23 | 苏州虞创智能仪表科技有限公司 | A kind of safe type intelligent valve positioner for being capable of feedback signal |
| CN106949302A (en) * | 2017-04-05 | 2017-07-14 | 苏州虞创智能仪表科技有限公司 | It is a kind of can remote adjustment valve opening intelligent valve positioner |
Non-Patent Citations (1)
| Title |
|---|
| NEPC风调雨顺6: "《Limitorque MX 系列产品样本》", 《百度文库》 * |
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Application publication date: 20200403 |
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