CN112066076B - Pneumatic control device for coal mine underground coal seam gas extraction pipeline - Google Patents
Pneumatic control device for coal mine underground coal seam gas extraction pipeline Download PDFInfo
- Publication number
- CN112066076B CN112066076B CN202010944479.XA CN202010944479A CN112066076B CN 112066076 B CN112066076 B CN 112066076B CN 202010944479 A CN202010944479 A CN 202010944479A CN 112066076 B CN112066076 B CN 112066076B
- Authority
- CN
- China
- Prior art keywords
- valve
- control
- extraction pipeline
- gas extraction
- pneumatic control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 92
- 238000000605 extraction Methods 0.000 title claims abstract description 78
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013461 design Methods 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
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- 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
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses a pneumatic control device for a coal mine underground coal seam gas extraction pipeline, which comprises: a power executing part which converts pressure energy of the compressed gas into mechanical energy and generates a rotational motion; the power transmission part transmits the rotary motion generated by the power execution part to a valve arranged on an extraction pipeline, and the power transmission part is provided with a manual control interface; a control state detection unit that detects a control state parameter of the valve; a pneumatic control valve for controlling the start and stop of the compressed air according to the received command; and the controller performs calculation analysis according to the control state parameters of the valve and the manual input parameters and outputs an execution command to the pneumatic control valve. The device takes compressed air as a power control valve, realizes a control mode combining automatic ground control of the coal mine underground coal bed gas extraction pipeline as a main mode, manual ground control as an auxiliary mode, underground manual calibration and emergency control, and effectively improves the high efficiency and safety of the coal bed gas extraction pipeline control.
Description
Technical Field
The invention relates to a coal bed gas extraction pipeline control device, in particular to a pneumatic control device for a coal bed gas extraction pipeline in a coal mine.
Background
The underground coal bed gas development at the present stage is generally carried out by adopting an extraction system, the coal bed gas is conveyed to the ground from underground by utilizing an extraction pipeline, due to the fact that the coal bed gas has nonuniformity and the coal body physical characteristics change under the influence of factors such as mining activity and the like, extraction parameters are in a dynamic change process, the extraction parameter is timely adjusted to obtain the optimal extraction effect, the extraction system has very important significance, the timeliness and the accuracy of the extraction parameter cannot be met by manual and mechanical adjustment of the extraction parameter, and the requirement is brought to remote/automatic control of the coal bed gas extraction pipeline. Some related achievements for an extraction pipeline control device exist in China, for example, patent ZL201610804555.0 discloses an intelligent valve device for a mine gas extraction pipeline, a mechanical control module adjusting valve is formed by combining a pair of electromagnetic coils and a pair of magnets, and efficient gas extraction is realized by using a control program; patent ZL201410059311.5 discloses an extraction control method of a coal mine gas extraction control system, and proposes a control method for adjusting the opening degree of a valve and the rotation speed of an extraction pump in a mining area according to the specific concentration of each mining area through a controller and a frequency converter. However, the existing coal bed gas extraction pipelines mostly adopt a manual or electric control mode, a pneumatic control mode taking compressed air as power is not found, coal mining is used as a high-risk industry, and power cables are not allowed to be laid in a main air return lane, a special air return lane and a mechanically lifted air inlet inclined roadway (not including an upper part and a lower part of a conveyor), so that the application range of the electric control mode of the coal bed gas extraction pipelines is limited to a certain extent, however, the coal mine underground extraction pipelines are usually laid in an air return roadway, the adoption of the electric or manual mode to control the extraction pipelines has great limitation, and in order to solve the technical problem that the limitation exists in the electric or manual mode to control the extraction pipelines, the invention provides a coal mine underground coal bed gas extraction pipeline pneumatic control device, which takes compressed air as power, and realizes the remote control of the extraction pipelines.
Disclosure of Invention
In order to solve the technical problem, the invention provides a pneumatic control device for an extraction pipeline of coal bed gas in a coal mine, which takes compressed air as power to realize remote control of the extraction pipeline.
A pneumatic control device of a coal bed gas extraction pipeline in a coal mine comprises a power execution unit, a power transmission unit, a control state monitoring unit, an instrument, a pneumatic control valve, a crank and a controller, wherein a compressed air pipeline is connected with the power execution unit through the pneumatic control valve, the power execution unit and the power transmission unit are fixed on a valve body of a valve of the coal bed gas extraction pipeline, the power transmission unit is connected with a driving shaft of the valve, the power execution unit converts pressure energy of compressed gas into mechanical energy and generates rotary motion to be transmitted to the valve through the power transmission unit, the control state monitoring unit detects control state parameters of the valve and displays the control state parameters through the instrument, the control state monitoring unit and the instrument are respectively arranged at the axial position of a valve rod of the valve, and the control state monitoring unit and the pneumatic control valve are respectively in communication connection with the controller through cables, the controller consists of a ground judgment module, a calculation analysis module and a command output module, wherein the ground judgment module is used for comparing and judging the control mode of the coal mine underground coal bed gas extraction pipeline; the calculation analysis module carries out calculation analysis according to the detected control state parameters of the valve and the manual input parameters; the command output module outputs a calculation analysis result obtained by the calculation analysis module to the pneumatic control valve to control the action of the pneumatic control valve, the power transmission part is provided with a manual control interface, and the crank is connected with the manual control interface.
Furthermore, the control state monitoring component comprises a rotary encoder and a limit switch, the rotary encoder is fixed on a valve rod of the valve and is axially consistent with the valve rod, and the rotary encoder detects the opening of the valve by calculating the number of electric pulses generated by the rotation of the rotary motion transmitted by the power transmission component; the limit switch sets up 2, and limit switch and rotary encoder cooperation realize the timing that valve control state detected.
Furthermore, two output ends of the pneumatic control valve are respectively connected with the air inlet and the air outlet of the power execution unit.
Further, the control mode of the coal mine underground coal bed gas extraction pipeline comprises ground automatic control, ground manual control and underground manual control.
Further, the control state parameter of the valve is the opening degree of the valve.
Further, the instrument contains casing, pointer, dabber subassembly, flange pressure disk and glass window, be provided with the sealing washer between flange pressure disk, the glass window and the casing and through the half countersunk head screw fixation of hexagon socket head, pointer and dabber subassembly set up inside the casing just the pointer is fixed in dabber subassembly top, and dabber subassembly drives the pointer and rotates together, the casing passes through the bolt, plays to fill up and the nut is fixed in on the valve body of valve.
Furthermore, the two limit switches are respectively positioned at the minimum value position and the maximum value position pointed by the pointer.
Has the advantages that: the invention can realize the control of the extraction pipeline valve by taking compressed air as power, broadens the application range of remote control of the extraction pipeline, can realize the control mode of combining ground automatic control of the coal mine underground coal bed gas extraction pipeline as a main mode, ground manual control as an auxiliary mode, underground manual calibration and emergency control, and can effectively improve the high efficiency and the safety of the coal mine underground coal bed gas extraction pipeline control. The controller can select an applicable control mode under different coal mine conditions and different time conditions according to conditions, so that the control efficiency and safety of the coal mine underground coal bed gas extraction pipeline are further effectively improved. The underground compressed air pipeline of the coal mine has a wide laying range, and the remote control operation of the extraction pipeline is convenient by adopting compressed air to replace electric power as power.
Drawings
FIG. 1 is a schematic structural diagram of a pneumatic control device of a coal bed gas extraction pipeline of the invention;
FIG. 2 is a front view of an instrument component of the pneumatic control device for a coal bed methane extraction pipeline according to the present invention;
FIG. 3 is a top view of an instrument component of the coal bed methane extraction pipeline pneumatic control device of the present invention;
FIG. 4 is a schematic diagram of a middle crank handle part of the pneumatic control device for the coal bed gas extraction pipeline of the invention;
FIG. 5 is a schematic diagram of the pneumatic control of an underground coal bed gas extraction pipeline of a coal mine;
FIG. 6 is a flow chart of pneumatic control of an underground coal bed gas extraction pipeline by a ground automatic control mode;
FIG. 7 is a flow chart of pneumatic control of the underground coal bed gas extraction pipeline by a ground manual control mode.
In the figure: 1. the device comprises a valve, 2, a crank, 3, a power execution component, 4, a power transmission component, 5, an instrument, 6, a limit switch, 7, a rotary encoder, 8, a semi-countersunk head screw, 9, a bolt, 10, an elastic pad, 11, a nut, 12, a pneumatic control valve, 13, a compressed air pipeline, 14, a controller, 15, a cable, 5-1, a shell, 5-2, a pointer, 5-3, a mandrel component, 5-4, a sealing ring, 5-5, an inner hexagonal semi-countersunk head screw, 5-6, a flange pressing disc, 5-7 and a glass window.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The invention is described in further detail below with reference to the accompanying figures 1-7:
a pneumatic control device for a coal mine underground coal seam gas extraction pipeline comprises a power execution part 3, a power transmission part 4, an instrument 5, a limit switch 6, a rotary encoder 7, a pneumatic control valve 12 and a controller 14. The power execution unit 3 is connected with a driving shaft of the valve 1 through the power transmission unit 4, an instrument 5, a limit switch 6 and a rotary encoder 7 are arranged along the axial direction of a valve rod of the valve 1, the power execution unit 3 is connected with a compressed air pipeline through a pneumatic control valve 12, and the limit switch 6, the rotary encoder 7 and the pneumatic control valve 12 are all connected with a controller 14 through cables 15. The number of the limit switches 6 is 2, the limit switches are respectively positioned at the minimum value position and the maximum value position of the pointing direction of the pointer 5-2 on the flange pressure plate 5-6, and the limit switches are fixed on the shell 5-1 of the instrument 5. The rotary encoder 7 is fixed above the mandrel component 5-3 and rotates together with the mandrel component 5-3.
The instrument 5 comprises a shell 5-1, a pointer 5-2, a mandrel component 5-3, a flange pressure plate 5-6 and a glass window 5-7, wherein a sealing ring 5-4 is arranged between the flange pressure plate 5-6, the glass window 5-7 and the shell 5-1 and is fixed by adopting an inner hexagonal half countersunk head screw 5-5. The pointer 5-2 is fixed above the mandrel component 5-3 and rotates together with the mandrel component 5-3. The shell 5-1 of the meter 5 is fixed on the valve body of the valve 1 through a bolt 9, an elastic cushion 10 and a nut 11.
A power executing part which converts pressure energy of the compressed gas into mechanical energy and generates a rotational motion; the power transmission part transmits the rotary motion generated by the power execution part to a valve arranged on an extraction pipeline, and the power transmission part is provided with a manual control interface; a control state detection unit that detects a control state parameter of a valve, the control state parameter of the valve being a valve opening degree; a pneumatic control valve for controlling the start and stop of the compressed air according to the received command; and the controller performs calculation analysis according to the control state parameters of the valve detected by the control state detection part and the manual input parameters, and outputs an execution command to the pneumatic control valve.
And the power execution part and the power transmission part are fixed on the valve body of the extraction pipeline valve together. Through the structure, the effective operation of the pneumatic control device of the coal mine underground coal bed gas extraction pipeline can be ensured.
The control state detection means has: the rotary encoder is fixed on the valve rod of the valve, is consistent with the axial direction of the valve rod and detects the opening of the valve by calculating the number of electric pulses generated by rotation; and the limit switches are 2 in number, limit the variation range of the valve control state and are matched with the rotary encoder to realize the adjustment and calibration of the valve control state detection. Through the structure, the valve opening degree can be accurately detected, and limiting protection is realized.
The input ends of the pneumatic control valves are connected with a compressed air pipeline in the coal mine, and the two output ends of the pneumatic control valves are respectively connected with an air inlet and an air outlet of the power execution component. By adopting the structure, the rotary motion of the power executing component can be controlled by taking compressed air as power, and the forward and reverse rotation control of the power executing component can be realized.
The controller has: the ground judgment module is used for comparing the control modes of the coal mine underground coal bed gas extraction pipelines and judging the control modes; the calculation analysis module is used for performing calculation analysis according to the detected control state parameters of the valve and the manual input parameters; and the command output module outputs the calculation and analysis result obtained by the calculation and analysis module to the pneumatic control valve. Through the structure, calculation analysis can be carried out according to the control state parameters and the manual input parameters of the valve obtained through detection, and an execution command is output to the pneumatic control valve, so that a control mode that the ground automatic control of the coal mine underground coal bed gas extraction pipeline is mainly used, the ground manual control is used as an auxiliary, and the underground manual calibration and emergency control are combined is realized.
The pneumatic control process of the coal mine underground coal bed gas extraction pipeline comprises the following steps: the controller carries out calculation and analysis according to the control state parameters of the valve and the manual input parameters which are detected by the control state detection part, and outputs an execution command to the pneumatic control valve; the pneumatic control valve is opened, compressed air in the compressed air pipeline enters the power execution unit, and the power execution unit converts the pressure energy of the compressed air into mechanical energy and generates rotary motion; the power transmission part transmits the rotary motion generated by the power execution part to a valve arranged on the extraction pipeline; valve action; the control state detection component detects the control state parameter of the valve and feeds the control state parameter of the valve back to the controller.
The pneumatic control device for the coal mine underground coal bed gas extraction pipeline has 3 control modes of ground automatic control, ground manual control and underground manual control, and the control flow of the 3 control modes is explained below.
The process for realizing the pneumatic control of the underground coal bed gas extraction pipeline by adopting a ground automatic control mode comprises the following steps:
a1, detecting the concentration of carbon monoxide in the gas in the extraction pipeline, if the concentration of carbon monoxide is less than a set value, executing the step A2, otherwise, executing the step A4;
a2, detecting the methane concentration of the gas in the extraction pipeline, if the methane concentration is less than a set value, executing the step A5, otherwise, executing the step A3;
a3, detecting the gas flow in the extraction pipeline, if the gas flow is less than a set value, executing the step A6, otherwise, stopping;
a4, executing action 1 of the pneumatic control device, reducing the valve opening until the valve opening is 0, and stopping;
a5, executing action 1 of the pneumatic control device, reducing the opening of the valve until the concentration of methane reaches a set value, and stopping;
a6, executing the action 2 of the pneumatic control device, increasing the valve opening until the gas flow reaches the set value, and stopping.
The flow for realizing the pneumatic control of the underground coal bed gas extraction pipeline by adopting the ground automatic control mode is a period, and the period interval can be manually set.
The process for realizing the pneumatic control of the underground coal bed gas extraction pipeline by adopting a ground manual control mode comprises the following steps:
b1, inputting a valve opening set value;
b2, judging the valve opening, if the valve opening is larger than the set value, executing the step B3, if the valve opening is smaller than the set value, executing the step B4, otherwise, stopping;
b3, executing action 1 of the pneumatic control device, reducing the valve opening until the valve opening reaches a set value, and stopping;
b4, executing the action 2 of the pneumatic control device, increasing the valve opening until the valve opening reaches the set value, and stopping.
And the pneumatic control of the underground coal bed gas extraction pipeline is realized by a manual control interface reserved in the power transmission part in an underground manual control mode.
Through the design, the control mode that the ground automatic control of the coal mine underground coal bed gas extraction pipeline is mainly used, the ground manual control is used as an auxiliary control, the underground manual calibration and emergency control are combined can be realized, the applicable control mode can be selected under different coal mine conditions and different time conditions, and the high efficiency and the safety of the coal mine underground coal bed gas extraction pipeline control can be effectively improved.
Fig. 7 is a schematic diagram of a middle crank handle part of a pneumatic control device of a coal bed gas extraction pipeline in a coal mine, and the power transmission part 4 is connected with the crank handle 2 through a connector.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (7)
1. A pneumatic control device for a coal bed gas extraction pipeline in a coal mine is characterized by comprising a power execution unit, a power transmission unit, a control state monitoring unit, an instrument, a pneumatic control valve, a crank and a controller, wherein a compressed air pipeline is connected with the power execution unit through the pneumatic control valve, the power execution unit and a power transmission unit are fixed on a valve body of the coal bed gas extraction pipeline valve, the power transmission unit is connected with a driving shaft of the valve, the power execution unit converts pressure energy of compressed gas into mechanical energy and generates rotary motion to be transmitted to the valve through the power transmission unit, the control state monitoring unit detects control state parameters of the valve and displays the control state parameters through the instrument, the control state monitoring unit and the instrument are respectively arranged at the axial position of a valve rod of the valve, and the control state monitoring unit and the pneumatic control valve are respectively in communication connection with the controller through cables, the controller consists of a ground judgment module, a calculation analysis module and a command output module, wherein the ground judgment module is used for comparing and judging the control mode of the coal mine underground coal bed gas extraction pipeline; the calculation analysis module carries out calculation analysis according to the detected control state parameters of the valve and the manual input parameters; the command output module outputs a calculation analysis result obtained by the calculation analysis module to the pneumatic control valve to control the action of the pneumatic control valve, the power transmission part is provided with a manual control interface, and the crank is connected with the manual control interface.
2. The pneumatic control device for the gas extraction pipeline of the coal mine underground coal seam according to claim 1, characterized in that: the control state monitoring component comprises a rotary encoder and a limit switch, the rotary encoder is fixed on a valve rod of the valve and is axially consistent with the valve rod, and the rotary encoder detects the opening of the valve by calculating the number of electric pulses generated by the rotation of the rotary motion transmitted by the power transmission component; the limit switch sets up 2, and limit switch and rotary encoder cooperation realize the timing that valve control state detected.
3. The pneumatic control device for the gas extraction pipeline of the coal mine underground coal seam according to claim 1, characterized in that: and two output ends of the pneumatic control valve are respectively connected with the air inlet and the air outlet of the power execution unit.
4. The pneumatic control device for the gas extraction pipeline of the coal mine underground coal seam according to claim 1, characterized in that: the control modes of the coal mine underground coal bed gas extraction pipeline comprise ground automatic control, ground manual control and underground manual control.
5. The pneumatic control device for the gas extraction pipeline of the coal mine underground coal seam according to claim 1, characterized in that: the control state parameter of the valve is the opening degree of the valve.
6. The pneumatic control device for the gas extraction pipeline of the coal mine underground coal seam according to claim 2, characterized in that: the instrument contains casing, pointer, dabber subassembly, flange pressure disk and glass window, be provided with the sealing washer between flange pressure disk, glass window and the casing and fix through hexagon socket head cap countersunk screw, pointer and dabber subassembly set up inside just at the casing the pointer is fixed in dabber subassembly top, and the dabber subassembly drives the pointer and rotates together, the casing is fixed in on the valve body of valve through bolt, bullet pad and nut.
7. The pneumatic control device for the gas extraction pipeline of the coal mine underground coal seam according to claim 6, characterized in that: the two limit switches are respectively positioned at the minimum value position and the maximum value position pointed by the pointer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944479.XA CN112066076B (en) | 2020-09-10 | 2020-09-10 | Pneumatic control device for coal mine underground coal seam gas extraction pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944479.XA CN112066076B (en) | 2020-09-10 | 2020-09-10 | Pneumatic control device for coal mine underground coal seam gas extraction pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112066076A CN112066076A (en) | 2020-12-11 |
| CN112066076B true CN112066076B (en) | 2022-03-15 |
Family
ID=73663505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010944479.XA Active CN112066076B (en) | 2020-09-10 | 2020-09-10 | Pneumatic control device for coal mine underground coal seam gas extraction pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112066076B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891975A (en) * | 1986-04-04 | 1990-01-09 | Movats Incorporated | Method and apparatus for remote monitoring of valves and valve operators |
| US4869102A (en) * | 1986-04-04 | 1989-09-26 | Movats Incorporated | Method and apparatus for remote monitoring of valves and valve operators |
| DE102006049650B4 (en) * | 2006-10-20 | 2010-01-14 | Samson Ag | System for positioning a control valve |
| US8838413B2 (en) * | 2011-05-12 | 2014-09-16 | Saudi Arabian Oil Company | Valve actuator fault analysis system |
| US9255649B2 (en) * | 2012-08-07 | 2016-02-09 | Fisher Controls International, Llc | Apparatus for fluid control device leak detection |
| CN103994271A (en) * | 2013-02-16 | 2014-08-20 | 江苏海达船用阀业有限公司 | Remotely and precisely controlled butterfly valve |
| CN103758561B (en) * | 2014-02-21 | 2015-04-22 | 山东安益矿用设备有限公司 | Extraction control for coal mine gas extraction control system |
| CN105401972B (en) * | 2015-09-02 | 2017-12-22 | 煤科集团沈阳研究院有限公司 | The safe extraction intelligence control system of coal bed gas and control method |
| CN106369209B (en) * | 2016-09-06 | 2019-05-03 | 中国矿业大学 | A kind of mine gas extraction pipeline intelligent valving |
| KR20190019369A (en) * | 2017-08-17 | 2019-02-27 | 주식회사 와플앱스 | Pneumatic control valve failure diagnosis method |
-
2020
- 2020-09-10 CN CN202010944479.XA patent/CN112066076B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112066076A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201327447Y (en) | Automobile electronic accelerator pedal performance test bed | |
| CN110500066B (en) | Underground throttle based on wireless control | |
| CN107553114B (en) | Online detection and fastening device for bolts of wind generating set | |
| CN108151981B (en) | Air leakage detection system of medium-low pressure air compressor for power plant | |
| CN102183330A (en) | Device and method for monitoring tensioning states of scraper conveyor chains | |
| CN201471142U (en) | Valve torque automatic control device | |
| CN112066076B (en) | Pneumatic control device for coal mine underground coal seam gas extraction pipeline | |
| CN104632199A (en) | Intelligent well underground data collecting system based on high-temperature single-chip microcomputer | |
| CN203603892U (en) | Semi-automatic ground control device and signal analyzing system in rotary guiding system | |
| CN110685948A (en) | Control method, device and processor of automatic monitoring system for local ventilation of coal mine | |
| CN113280136A (en) | Intelligent control valve with data remote transmission function | |
| CN202175916U (en) | Touch screen type intelligent grouting controller for prestressed duct | |
| CN210557995U (en) | Intelligent ash conveying control system based on DCS | |
| CN112081619A (en) | Coal mine underground coal seam gas extraction regulation and control system and regulation and control method | |
| CN110285678A (en) | The method for monitoring sintering circular-cooler traveling skidding | |
| CN102304894B (en) | Method and device for controlling grouting quality of bridge prestressing force pore path | |
| CN215718706U (en) | Gas well working fluid level monitoring device | |
| CN215517507U (en) | Automatic ash discharging system for dust removing device of blast furnace of iron works | |
| CN101670972A (en) | Drive device of high rise escalator | |
| CN201805340U (en) | Position detector of coal mining machine | |
| CN203176056U (en) | Digital electric-hydraulic pusher | |
| CN212903937U (en) | Filter stick emission module function test system | |
| CN201011506Y (en) | Device for vehicle double-pipe air supply indicating and controlling device | |
| CN111396616A (en) | Intelligent electric valve | |
| CN206208910U (en) | A kind of pressure volume controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |