CN104200738A - Valve for simulated training and valve simulated training system - Google Patents

Valve for simulated training and valve simulated training system Download PDF

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Publication number
CN104200738A
CN104200738A CN201410397630.7A CN201410397630A CN104200738A CN 104200738 A CN104200738 A CN 104200738A CN 201410397630 A CN201410397630 A CN 201410397630A CN 104200738 A CN104200738 A CN 104200738A
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China
Prior art keywords
valve
simulated training
opening
mark sensor
closing element
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Granted
Application number
CN201410397630.7A
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Chinese (zh)
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CN104200738B (en
Inventor
陈伟东
杨波
郭勇
刘长芝
剧世锋
王瑞英
张长胜
杨帆
李鑫
王勇
高波
于俊梅
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Priority to CN201410397630.7A priority Critical patent/CN104200738B/en
Publication of CN104200738A publication Critical patent/CN104200738A/en
Application granted granted Critical
Publication of CN104200738B publication Critical patent/CN104200738B/en
Active legal-status Critical Current
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Abstract

The invention provides a valve for simulated training and a valve simulated training system. The valve for simulated training comprises a valve body, a valve rod and an opening and closing piece which is fixedly installed at the lower end of the valve rod, the opening and closing piece is in a hollow structure, the valve further comprises an opening and closing state detector which is used for detecting opening and closing states of the opening and closing piece, and the opening and closing state detector is mounted in the valve body. According to the valve for simulated training and the valve simulated training system, whether actual operation of a simulated pipeline by an oil extraction worker conforms to standards can be automatically detected, and thereby, the detected automatic level of actual operation conditions of the simulated pipeline by the oil extraction worker can be improved.

Description

Valve and valve simulated training system for simulated training
Technical field
The present invention relates to valve, especially relate to a kind of simulated training valve and valve simulated training system.
Background technology
Valve is control assembly in pipeline fluid induction system, and it is for changing path section and media flow direction, has the functions such as water conservancy diversion, cut-off, throttling, non-return, shunting or overflow release.
In oil-field development, the fluid delivery pipeline between oil well and the equipment of production station is also that the flow process being formed by pipeline and valve connects and composes.In actual production procedure, valve control operation is one of important routine work of Production post employee, and whether each valve operation on pipeline meets specification, requirement, directly affects pipeline state.Therefore, at various conventional and each valves of the skilled proper operation of complicated production flow operations, be, one of Production post employee technical ability that must reach.
In order to train and to improve Production post employee technical ability in this respect, in industry, conventionally can build simulation pipeline, and by manual observation Production post employee practical operation simulation pipeline situation, it be checked and rated to qualification.Due to entirely by manually completing evaluation, like this since reviewer not only workload is large, also there is human factor and inaccurate, the one sided problem of examination that causes.
Summary of the invention
The object of the present invention is to provide a kind of simulated training valve and valve simulated training system, to improve the automatization level of inspection Production post employee practical operation simulation pipeline situation.
For achieving the above object, on the one hand, the invention provides a kind of simulated training valve, comprise valve body, valve rod and be fixedly installed in the opening and closing element of described valve rod lower end, described opening and closing element is hollow-core construction, this valve also comprises the open and-shut mode detecting device for detection of described opening and closing element open and-shut mode, and described open and-shut mode detecting device is arranged in described valve body.
Simulated training valve of the present invention, on described valve rod, have the first detection through hole along its axis direction, on described opening and closing element, have the second detection through hole along the axis direction of described valve rod, described the second detection through hole and described first is surveyed lead to the hole site and is coordinated, thereby forms a detection channels; Obstacle detection device is installed in described valve body, described obstacle detection device be positioned at described detection channels under, and it is popped one's head in upwards just to described detection channels.
Simulated training valve of the present invention; described obstacle detection device is laser sensor; in described valve body, be installed with support containment vessel; described laser sensor is installed in described support containment vessel, has and be suitable for the first beam orifice that laser and laser reflection light pass on the top of described support containment vessel.
Simulated training valve of the present invention, described open and-shut mode detecting device comprises:
One is installed on the color lump of described opening and closing element lower end;
Coordinate to detect first color mark sensor of described opening and closing element in full-gear with described color lump;
Coordinate to detect second color mark sensor of described opening and closing element in full-shut position with described color lump.
Simulated training valve of the present invention; described the first color mark sensor and described the second color mark sensor are all installed in described support containment vessel; on the sidewall of described support containment vessel, have and be suitable for the second beam orifice and the 3rd beam orifice that laser and laser reflection light pass; described the second beam orifice be positioned at described the 3rd beam orifice under; described the second beam orifice coordinates with the probe positions of described the first color mark sensor, and described the 3rd beam orifice coordinates with the probe positions of described the second color mark sensor.
Simulated training valve of the present invention, described the first color mark sensor, described the second color mark sensor and described laser sensor are the electronic installation being integrated in one.
Simulated training valve of the present invention, the bottom in described support containment vessel has detent, and the profile of described electronic installation coordinates with described detent, and its underpart is installed in described detent.
Simulated training valve of the present invention, described detent is square groove.
On the other hand, the present invention also provides a kind of valve simulated training system, comprising:
At least one simulated training valve, the opening and closing element that it comprises valve body, valve rod and is fixedly installed in described valve rod lower end, described opening and closing element is hollow-core construction, this valve also comprises the open and-shut mode detecting device for detection of described opening and closing element open and-shut mode, and described open and-shut mode detecting device is arranged in described valve body;
Controller, is electrically connected with valve with described simulated training, for obtaining the detection signal of described open and-shut mode detecting device, and generates testing result according to this detection signal.
Valve simulated training system of the present invention, this system also comprises:
Display, it is electrically connected with described controller, for the testing result output display that described controller is generated.
Valve simulated training system of the present invention, on described valve rod, have the first detection through hole along its axis direction, on described opening and closing element, have the second detection through hole along the axis direction of described valve rod, described the second detection through hole and described first is surveyed lead to the hole site and is coordinated, thereby forms a detection channels; Obstacle detection device is installed in described valve body, described obstacle detection device be positioned at described detection channels under, and it is popped one's head in upwards just to described detection channels.
Valve simulated training system of the present invention; described obstacle detection device is laser sensor; in described valve body, be installed with support containment vessel; described laser sensor is installed in described support containment vessel, has and be suitable for the first beam orifice that laser and laser reflection light pass on the top of described support containment vessel.
Valve simulated training system of the present invention, described open and-shut mode detecting device comprises:
One is installed on the color lump of described opening and closing element lower end;
Coordinate to detect first color mark sensor of described opening and closing element in full-gear with described color lump;
Coordinate to detect second color mark sensor of described opening and closing element in full-shut position with described color lump.
Valve simulated training system of the present invention; described the first color mark sensor and described the second color mark sensor are all installed in described support containment vessel; on the sidewall of described support containment vessel, have and be suitable for the second beam orifice and the 3rd beam orifice that laser and laser reflection light pass; described the second beam orifice be positioned at described the 3rd beam orifice directly over; described the second beam orifice coordinates with the probe positions of described the first color mark sensor, and described the 3rd beam orifice coordinates with the probe positions of described the second color mark sensor.
Valve simulated training system of the present invention, described the first color mark sensor, described the second color mark sensor and described laser sensor are the electronic installation being integrated in one.
Valve simulated training system of the present invention, the bottom in described support containment vessel has detent, and the profile of described electronic installation coordinates with described detent, and its underpart is installed in described detent.
Valve simulated training system of the present invention, described detent is square groove.
Simulated training valve of the present invention, can realize the whether specification (open and close correct and put in place) of switching of valve on automatic detection Production post employee operation simulation pipeline by being installed on open and-shut mode detecting device in valve body, thereby improve the automatization level of inspection Production post employee practical operation simulation pipeline situation.In addition, simulated training of the present invention is with obstacle detection device being installed in valve and offering corresponding detection channels, thus whether specification of the erect-position when having realized the detector that breaks the barriers and automatically detecting Production post employee practical operation simulation pipeline.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, does not form limitation of the invention.In the accompanying drawings:
Fig. 1 is that the master of the simulated training valve of one embodiment of the invention looks cut-open view;
Fig. 2 is the side-looking cutaway view Amplified image of simulated training valve in Fig. 1;
Fig. 3 is the cutaway view Amplified image of looking up that supports containment vessel and electronics portion in valve for simulated training in Fig. 1;
Fig. 4 is the structural representation of the valve simulated training system of one embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in further details.At this, schematic description and description of the present invention is used for explaining the present invention, but not as a limitation of the invention.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Shown in figure 1, the simulated training valve of the embodiment of the present invention is the improvement on existing valve basis, with existing valve type seemingly, the simulated training of the embodiment of the present invention comprises that with valve valve rod 2, handwheel pressure-pad 3, handwheel 4, copper sheathing chamber 5, copper sheathing 6, packing gland 7, packing_seal circle 8, valve gap 9, valve body 10, valve rod hang cap 11 and be fixedly installed in the opening and closing element 12 of half framework hollow-core construction of valve rod 2 lower ends equally.Difference is:
The simulated training of the embodiment of the present invention is with having the first detection center pit 1 along its axis direction on the valve rod 12 of valve, on opening and closing element 12, have the second detection center pit 19 along the axis direction of valve rod, the second detection center pit 19 and first is surveyed center pit 1 position and is coordinated, thereby forms a complete detection channels.In valve body 10, be installed with support containment vessel; this support containment vessel is made up of housing 16 and top cover 14; in housing 16, laser sensor is installed; this laser sensor be positioned at detection channels under; and its probe is 13 upwards just to detection channels, on the top of top cover 14, has and be suitable for the first beam orifice 18 that laser and laser reflection light pass.
Shown in Fig. 2, above-mentioned support containment vessel is also provided with the open and-shut mode detecting device for detection of opening and closing element 12 open and-shut modes.This open and-shut mode detecting device comprises: one is installed on the color lump 20 of opening and closing element 12 inside lower end, coordinates to detect first color mark sensor of opening and closing element 12 in full-gear and join 20 with color lump and close to detect second color mark sensor of opening and closing element 12 in full-shut position with color lump 20.On the sidewall of housing 16, have and be suitable for the second beam orifice 29 and the 3rd beam orifice 30 that laser and laser reflection light pass, the second beam orifice 29 be positioned at the 3rd beam orifice 30 directly over, the second beam orifice 29 coordinates with probe 21 positions of the first color mark sensor, and the 3rd beam orifice 30 coordinates with probe 22 positions of the second color mark sensor.In order to save space, the first color mark sensor, the second color mark sensor and laser sensor are the electronic installation 15 being integrated in one.Shown in Fig. 3; bottom in support containment vessel has detent 23 and (in the embodiment of the present invention, adopts a square groove as example; this groove also can adopt other to be convenient to the shape of location); the profile of electronic installation 15 coordinates with detent 23; and its underpart is installed in detent 23, thereby be conducive to position fast and accurately and assemble.
When use, first by simulated training valve all on simulation pipeline or valve alternative costs inventive embodiments that specify.In the time of Production post employee rotation hand wheel 4, can drive opening and closing element 1 to move up or down by valve rod 2, thereby synchronously drive color lump 20 to move up or down; When opening and closing element 1 upwards runs to when spacing, valve is in full-gear, now color lump 20 is just in time facing to the probe 21 of the first color mark sensor, and at this moment the first color mark sensor will be exported a detection signal, this detection signal instruction simulation training with valve with in full-gear; Equally, when opening and closing element 1 runs down to when spacing, valve is in full-shut position, and now color lump 20 is just in time facing to the probe 22 of the second color mark sensor, at this moment the second color mark sensor will be exported a detection signal, the training of this detection signal instruction simulation with valve with in full-shut position.Thereby realize the whether specification (open and close correct and put in place) of switching that automatically detects valve on Production post employee operation simulation pipeline by color mark sensor.In addition, in the time that the valve on pipeline is simulated in Production post employee practical operation, the operation erect-position that can survey Production post employee by the laser sensor on this valve whether meet the requirements (being the cylindrical space whether standing place has avoided valve rod top), if operation erect-position meets the requirements, laser sensor is surveyed the health (survey and find no barrier) less than this Production post employee, if operation erect-position undesirable (in the cylindrical space of certain position of this Production post employee's health in valve rod top), laser sensor can detect this barrier of health of this Production post employee, thereby realize whether specification of erect-position while automatically detecting Production post employee practical operation simulation pipeline by laser sensor.
Shown in figure 4, the valve simulated training system of the embodiment of the present invention comprises:
At least one above-mentioned valve for simulated training (sleeve valve 24, mixing liquid valve door 25 and the connection valve 26 of for example Fig. 4);
Controller 27 (controller such as such as PLC), it is electrically connected by a cable 17 with valve with simulated training, the detection signal of exporting for obtaining laser sensor, the first color mark sensor and second color mark sensor of simulated training valve, and generate testing result and preserve according to this detection signal;
The valve simulated training system of the embodiment of the present invention also comprises:
Display, it is electrically connected by another cable 17 with controller 27, for the testing result output display that controller 27 is generated.
In the valve simulated training system of the embodiment of the present invention, the underground proper operation flow process of mixing liquid operation of for example oil well is: open sleeve valve 24 → open mixing liquid valve door 25 → close and be communicated with valve 26, and Production post employee is in the time of above-mentioned any one valve of operation, whether are its operation erect-position and/or valve open-close state working specification, the pick-up unit on corresponding valve (laser sensor, the first color mark sensor and the second color mark sensor) will be exported corresponding detection signal, and 27 of controllers can be exported corresponding testing result according to this detection signal.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (17)

1. a simulated training valve, it is characterized in that, comprise valve body, valve rod and be fixedly installed in the opening and closing element of described valve rod lower end, described opening and closing element is hollow-core construction, this valve also comprises the open and-shut mode detecting device for detection of described opening and closing element open and-shut mode, and described open and-shut mode detecting device is arranged in described valve body.
2. simulated training valve according to claim 1, it is characterized in that, on described valve rod, have the first detection through hole along its axis direction, on described opening and closing element, have the second detection through hole along the axis direction of described valve rod, described the second detection through hole and described first is surveyed lead to the hole site and is coordinated, thereby forms a detection channels; Obstacle detection device is installed in described valve body, described obstacle detection device be positioned at described detection channels under, and it is popped one's head in upwards just to described detection channels.
3. simulated training valve according to claim 2; it is characterized in that; described obstacle detection device is laser sensor; in described valve body, be installed with support containment vessel; described laser sensor is installed in described support containment vessel, has and be suitable for the first beam orifice that laser and laser reflection light pass on the top of described support containment vessel.
4. simulated training valve according to claim 3, is characterized in that, described open and-shut mode detecting device comprises:
One is installed on the color lump of described opening and closing element lower end;
Coordinate to detect first color mark sensor of described opening and closing element in full-gear with described color lump;
Coordinate to detect second color mark sensor of described opening and closing element in full-shut position with described color lump.
5. simulated training valve according to claim 4; it is characterized in that; described the first color mark sensor and described the second color mark sensor are all installed in described support containment vessel; on the sidewall of described support containment vessel, have and be suitable for the second beam orifice and the 3rd beam orifice that laser and laser reflection light pass; described the second beam orifice be positioned at described the 3rd beam orifice under; described the second beam orifice coordinates with the probe positions of described the first color mark sensor, and described the 3rd beam orifice coordinates with the probe positions of described the second color mark sensor.
6. simulated training valve according to claim 5, is characterized in that, described the first color mark sensor, described the second color mark sensor and described laser sensor are the electronic installation being integrated in one.
7. simulated training valve according to claim 6, is characterized in that, the bottom in described support containment vessel has detent, and the profile of described electronic installation coordinates with described detent, and its underpart is installed in described detent.
8. simulated training valve according to claim 7, is characterized in that, described detent is square groove.
9. a valve simulated training system, is characterized in that, comprising:
At least one simulated training valve, the opening and closing element that it comprises valve body, valve rod and is fixedly installed in described valve rod lower end, described opening and closing element is hollow-core construction, this valve also comprises the open and-shut mode detecting device for detection of described opening and closing element open and-shut mode, and described open and-shut mode detecting device is arranged in described valve body;
Controller, is electrically connected with valve with described simulated training, for obtaining the detection signal of described open and-shut mode detecting device, and generates testing result according to this detection signal.
10. valve simulated training system according to claim 9, is characterized in that, this system also comprises:
Display, it is electrically connected with described controller, for the testing result output display that described controller is generated.
11. valve simulated training systems according to claim 9, it is characterized in that, on described valve rod, have the first detection through hole along its axis direction, on described opening and closing element, have the second detection through hole along the axis direction of described valve rod, described the second detection through hole and described first is surveyed lead to the hole site and is coordinated, thereby forms a detection channels; Obstacle detection device is installed in described valve body, described obstacle detection device be positioned at described detection channels under, and it is popped one's head in upwards just to described detection channels.
12. valve simulated training systems according to claim 11; it is characterized in that; described obstacle detection device is laser sensor; in described valve body, be installed with support containment vessel; described laser sensor is installed in described support containment vessel, has and be suitable for the first beam orifice that laser and laser reflection light pass on the top of described support containment vessel.
13. valve simulated training systems according to claim 12, is characterized in that, described open and-shut mode detecting device comprises:
One is installed on the color lump of described opening and closing element lower end;
Coordinate to detect first color mark sensor of described opening and closing element in full-gear with described color lump;
Coordinate to detect second color mark sensor of described opening and closing element in full-shut position with described color lump.
14. valve simulated training systems according to claim 13; it is characterized in that; described the first color mark sensor and described the second color mark sensor are all installed in described support containment vessel; on the sidewall of described support containment vessel, have and be suitable for the second beam orifice and the 3rd beam orifice that laser and laser reflection light pass; described the second beam orifice be positioned at described the 3rd beam orifice directly over; described the second beam orifice coordinates with the probe positions of described the first color mark sensor, and described the 3rd beam orifice coordinates with the probe positions of described the second color mark sensor.
15. valve simulated training systems according to claim 14, is characterized in that, described the first color mark sensor, described the second color mark sensor and described laser sensor are the electronic installation being integrated in one.
16. valve simulated training systems according to claim 15, is characterized in that, the bottom in described support containment vessel has detent, and the profile of described electronic installation coordinates with described detent, and its underpart is installed in described detent.
17. valve simulated training systems according to claim 16, is characterized in that, described detent is square groove.
CN201410397630.7A 2014-08-13 2014-08-13 Valve for simulated training and valve simulated training system Active CN104200738B (en)

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CN104200738B CN104200738B (en) 2017-02-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108091237A (en) * 2018-01-17 2018-05-29 安徽新视野科教文化股份有限公司 A kind of switch apparatus for demonstrating of artificial intelligence training

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974427A (en) * 1974-11-07 1976-08-10 Honeywell Inc. Motor control apparatus for three position valve
US5540414A (en) * 1994-05-03 1996-07-30 Taco, Inc. Actuator and zone valve
CN101228088B (en) * 2005-07-28 2011-04-13 西德尔公司 Filling valve with liquid chamber, gas chamber and middle chamber and filling machine with the valve
CN102564954A (en) * 2010-12-09 2012-07-11 苏州生物医学工程技术研究所 Multi-channel photoelectric detection device for dry type chemical analysis
CN102735279A (en) * 2012-07-18 2012-10-17 重庆长安志阳汽车电气有限责任公司 Crankshaft position sensor
CN102748012A (en) * 2012-06-29 2012-10-24 中国海洋石油总公司 Underground wireless communication data receiving and transmitting nipple
CN203204743U (en) * 2013-04-08 2013-09-18 西安英诺视通信息技术有限公司 Mobile external-damage-preventive remote monitoring device of electric transmission line
CN103791140A (en) * 2014-01-24 2014-05-14 南通神华电气有限公司 Electric valve
CN204045121U (en) * 2014-08-13 2014-12-24 中国石油天然气股份有限公司 Simulated training valve and valve simulated training system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974427A (en) * 1974-11-07 1976-08-10 Honeywell Inc. Motor control apparatus for three position valve
US5540414A (en) * 1994-05-03 1996-07-30 Taco, Inc. Actuator and zone valve
CN101228088B (en) * 2005-07-28 2011-04-13 西德尔公司 Filling valve with liquid chamber, gas chamber and middle chamber and filling machine with the valve
CN102564954A (en) * 2010-12-09 2012-07-11 苏州生物医学工程技术研究所 Multi-channel photoelectric detection device for dry type chemical analysis
CN102748012A (en) * 2012-06-29 2012-10-24 中国海洋石油总公司 Underground wireless communication data receiving and transmitting nipple
CN102735279A (en) * 2012-07-18 2012-10-17 重庆长安志阳汽车电气有限责任公司 Crankshaft position sensor
CN203204743U (en) * 2013-04-08 2013-09-18 西安英诺视通信息技术有限公司 Mobile external-damage-preventive remote monitoring device of electric transmission line
CN103791140A (en) * 2014-01-24 2014-05-14 南通神华电气有限公司 Electric valve
CN204045121U (en) * 2014-08-13 2014-12-24 中国石油天然气股份有限公司 Simulated training valve and valve simulated training system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108091237A (en) * 2018-01-17 2018-05-29 安徽新视野科教文化股份有限公司 A kind of switch apparatus for demonstrating of artificial intelligence training
CN108091237B (en) * 2018-01-17 2023-11-10 安徽新视野科教文化股份有限公司 Switch presentation device of intelligent simulation training

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