CN103133749B - Electrical-gas valve positioner with limiting position protecting part - Google Patents
Electrical-gas valve positioner with limiting position protecting part Download PDFInfo
- Publication number
- CN103133749B CN103133749B CN201310055124.5A CN201310055124A CN103133749B CN 103133749 B CN103133749 B CN 103133749B CN 201310055124 A CN201310055124 A CN 201310055124A CN 103133749 B CN103133749 B CN 103133749B
- Authority
- CN
- China
- Prior art keywords
- feedback
- feedback rod
- valve positioner
- gas valve
- explosion
- 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
Landscapes
- Electrically Driven Valve-Operating Means (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses an electrical-gas valve positioner with a limiting position protecting part. The electrical-gas valve positioner comprises a cavity, a torque motor, a feedback rod assembly and a limiting switch. The feedback rod assembly comprises a driving feedback rod and a driven feedback rod, wherein the driven feedback rod is connected with the driving feedback rod through a feedback linkage gear, and a limiting switch cam is arranged on the driving feedback rod. Due to the fact that the limiting switch is arranged in the electrical-gas valve positioner, the driving feedback rod directly performs feedback of a cylinder to the valve positioner and the limiting switch, an installing space is saved, the requirement that the limiting position protecting part is installed at a narrow installing position is met, and control part installation is simplified.
Description
Technical field
The present invention relates to a kind of electricity-gas valve positioner, particularly relate to a kind of electricity-gas valve positioner with limit position protection.
Background technique
Valve in actual use operator not only needs to understand the position when early gate, needs the limit action of valve to protect simultaneously.Mechanical type electricity-gas valve positioner must possess the i.e. 4～20mA constant current power supply of two conditions before normal work, the constant source of the gas of 1.4～7.0kgf/cm2, the current signal of bestowing by the external world carrys out driving moment motor sub-assembly, when given electric current changes, thereby the armature in torque motor assembly is issued to certain new position change baffle plate and the distance between nozzle according to the variation in magnetic field in the driving of leverage, when source of the gas, give regularly between nozzle and baffle plate and can form certain back pressure, when baffle plate and nozzle location change, this back pressure can not keep constant, now positioning work piece everything will stop, only maintain an equilibrium position.When baffle position changes, back pressure changes, pilot valve core starts action, now between air inlet/outlet, start to have pressurized air to flow, after entering cylinder, this gas causes cylinder action, in cylinder action, feedback rod assembly is changed by cylinder traction occurrence positions, is reacted to the change of the pulling force of spring after above change again, when reply spring stop position, pilot valve is in state of equilibrium, and when air inlet/outlet has pressurized air to flow, a control procedure of whole positioning work piece does not finish.While using mechanical type electricity-gas valve positioner control valve to protect limit position, need to add in addition limit switch; but under some special occasions; on-the-spot installing space is compared with little and can only abandon the installation of limit switch cannot hold a plurality of controlling component time and cause the disappearance of monitoring and protection, and a plurality of parts installs and also cannot realize the integrated explosion proof system of controlling component respectively in addition.
Summary of the invention
The object of this invention is to provide a kind of small and exquisite electricity-gas valve positioner of volume of integrating limit switch, solving on-the-spot installing space has installation question in limited time, simplifies the installation of controlling component.
Technological scheme of the present invention is such: a kind of electricity-gas valve positioner with limit position protection; comprise cavity, torque motor, feedback rod assembly and limit switch; it is characterized in that: described feedback rod assembly comprises active feedback bar and driven feedback rod; driven feedback rod is connected with active feedback bar by feedback linkage gear, and described active feedback bar is provided with limit switch cam.
In a specific embodiment of the present invention, in order to realize the explosion-proof of electricity-gas valve positioner, described cavity is divided into locating mould cavity and explosion-proof die cavity by central diaphragm, described torque motor and driven feedback rod are arranged in locating mould cavity, described active feedback bar is arranged in explosion-proof die cavity, in described explosion-proof die cavity, be also provided with tenminal block, described central diaphragm is provided with through hole, described through hole is provided with explosion-proof screw thread, the wiring of described torque motor is connected with tenminal block through through hole, and the wiring of described limit switch is connected with tenminal block.
The advantage of technological scheme provided by the present invention is; limit switch cam is set on active feedback bar; when positioning work piece moves; cylinder operation drives the motion of active feedback bar; when action reaches the limit of position; limit switch cam triggers limit switch contact, has reached the effect of protection actuator limit position.Because limit switch is arranged in electricity-gas valve positioner; the feedback of cylinder directly feeds back to valve positioner and limit switch by an active feedback bar; saved installing space, met the requirement that limit position guard block is installed in narrow and small mounting point, simplified controlling component and install.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is feedback rod modular construction schematic diagram in the present invention;
Fig. 3 is cavity and central diaphragm structural representation.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but not as a limitation of the invention.
Refer to Fig. 1; electricity-gas valve positioner with limit position protection; comprise cavity 1, torque motor 2, feedback rod assembly 3 and limit switch 4; refer to Fig. 2 feedback rod assembly 3 and comprise active feedback bar 31 and driven feedback rod 32; driven feedback rod 32 is connected with active feedback bar 31 by feedback linkage gear 33, and active feedback bar 31 is provided with limit switch cam 41.Electricity-gas valve positioner is after receiving 4～20mA current signal of control end conveying, 2 actions of driving moment motor cause valve positioner output gas signal intensity, there is corresponding change in the aperture of corresponding cylinder 6, when cylinder 6 apertures change, 61 actions of band dynamic air cylinder coupling shaft, cylinder coupling shaft 61 is rigidly connected by connecting plate 7 and active feedback bar 31.The action of cylinder coupling shaft 61 transfers to active feedback bar 31, because driven feedback rod 32 is connected with active feedback bar 31 by feedback linkage gear 33,31 actions of active feedback bar drive driven feedback rod 32 actions, and driven feedback rod 32 feeds back to electricity-gas valve positioner by cylinder action; 31 actions of active feedback bar drive the limit switch cam 41 arranging on it simultaneously, and when cylinder stroke reaches capacity position, corresponding limit switch cam 41 triggers limit switch 4 contacts, sends limit position signal.
Refer to again Fig. 1 and Fig. 3, cavity 1 is divided into locating mould cavity 12 and explosion-proof die cavity 13 by central diaphragm 11, torque motor 2 and driven feedback rod 32 are arranged in locating mould cavity 12, active feedback bar 31 is arranged in explosion-proof die cavity 13, in explosion-proof die cavity 13, be also provided with tenminal block, central diaphragm 11 is provided with through hole 11a, and through hole 11a is provided with explosion-proof screw thread 11b, the wiring of torque motor 2 is connected with tenminal block 5 through through hole 11a, and the wiring of limit switch 4 is connected with tenminal block 5.By this structural change, the electrical wiring of electricity-gas valve positioner is partly arranged in the explosion-proof die cavity with blasting resistance structure, thereby realizes the explosion-proof of electricity-gas valve positioner.
Claims (1)
1. the electricity-gas valve positioner with limit position protection, comprise cavity (1), torque motor (2), feedback rod assembly (3) and limit switch (4), it is characterized in that: described feedback rod assembly (3) comprises active feedback bar (31) and driven feedback rod (32), driven feedback rod (32) is connected with active feedback bar (31) by feedback linkage gear (33), described active feedback bar (31) is provided with limit switch cam (41), described cavity (1) is divided into locating mould cavity (12) and explosion-proof die cavity (13) by central diaphragm (11), described torque motor (2) and driven feedback rod (32) are arranged in locating mould cavity (12), described active feedback bar (31) is arranged in explosion-proof die cavity (13), in described explosion-proof die cavity (13), be also provided with tenminal block (5), described central diaphragm (11) is provided with through hole (11a), described through hole (11a) is provided with explosion-proof screw thread (11b), the wiring of described torque motor (2) is connected with tenminal block (5) through through hole (11a), the wiring of described limit switch (4) is connected with tenminal block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055124.5A CN103133749B (en) | 2013-02-21 | 2013-02-21 | Electrical-gas valve positioner with limiting position protecting part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055124.5A CN103133749B (en) | 2013-02-21 | 2013-02-21 | Electrical-gas valve positioner with limiting position protecting part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103133749A CN103133749A (en) | 2013-06-05 |
| CN103133749B true CN103133749B (en) | 2014-11-12 |
Family
ID=48493967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310055124.5A Active CN103133749B (en) | 2013-02-21 | 2013-02-21 | Electrical-gas valve positioner with limiting position protecting part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103133749B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335152A (en) * | 2013-06-13 | 2013-10-02 | 常熟市惠尔石化仪表有限公司 | Intelligent electro-pneumatic valve positioner with three-failure protection function |
| CN104613230B (en) * | 2015-02-06 | 2017-07-18 | 常熟市华夏仪表有限公司 | A kind of explosion-proof type intelligent electric valve positioner |
| CN106247925B (en) * | 2016-07-18 | 2019-01-18 | 连云港杰瑞电子有限公司 | A kind of digital angle position transmitter with limit switch |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2388447Y (en) * | 1999-07-02 | 2000-07-19 | 深圳汉光电子技术有限公司 | Motor-operated valve of limit switch with switch limiting position |
| GB0421293D0 (en) * | 2004-09-24 | 2004-10-27 | Carolan Laurence | Control device |
| JP2008151293A (en) * | 2006-12-19 | 2008-07-03 | Yamatake Corp | Motor driven control valve and motor driven actuator |
| JP5049661B2 (en) * | 2007-06-11 | 2012-10-17 | 日本ダイヤバルブ株式会社 | Diaphragm valve limit switch operating mechanism |
| KR100896881B1 (en) * | 2007-10-31 | 2009-05-12 | 동양매직 주식회사 | The Assembly of Plug Valve |
| KR200450957Y1 (en) * | 2008-06-04 | 2010-11-12 | 주식회사 영텍 | The linear type e-p positioner containing the feedback shaft rotation detector |
| KR20110100557A (en) * | 2010-03-04 | 2011-09-14 | 캄텍주식회사 | Gas control valve for vehicle |
| CN202405941U (en) * | 2011-11-26 | 2012-08-29 | 上海一诺仪表有限公司 | Anti-explosion electric executing mechanism for high-pressure flow auto-control instrument |
| CN203146979U (en) * | 2013-02-21 | 2013-08-21 | 常熟市维特隆自动化仪表厂 | Electric-pneumatic valve positioner with limit position protection function |
-
2013
- 2013-02-21 CN CN201310055124.5A patent/CN103133749B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103133749A (en) | 2013-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103133749B (en) | Electrical-gas valve positioner with limiting position protecting part | |
| US7621123B2 (en) | Actuator control system and method | |
| KR101943762B1 (en) | Motor assembled hydraulic pump applied multi-joint robot | |
| CN203146979U (en) | Electric-pneumatic valve positioner with limit position protection function | |
| KR20170013230A (en) | Integrated displacement controlled pump | |
| CN105135027A (en) | Integrated direct-acting on-off type slide valve driven by micro-motor | |
| CN103216478A (en) | Digital hydraulic motor | |
| KR101943761B1 (en) | Motor assembled hydraulic pump | |
| CN106762871B (en) | A kind of the servo-pump control hydraulic linear drive system and control method of single motor double pump | |
| CN102392844A (en) | Hydraulic cylinder speed and pressure control system | |
| CN101839267A (en) | Integral speed regulating and pressure regulating servo oil cylinder with pump | |
| CN202418095U (en) | Feedback type multi-level hydraulic cylinder | |
| CN201113645Y (en) | Servo-jar | |
| CN204851560U (en) | Positive flow control electric proportional pump | |
| CN104160160A (en) | Hydraulic device for driving oil well pump | |
| CN201896665U (en) | Pneumatic shutdown device of engine | |
| CN214578076U (en) | Cylinder body | |
| CN105470037B (en) | A kind of contact abrasion self-checking device and method for vacuum circuit breaker | |
| CN203670127U (en) | Mechanical mortar pump | |
| CN108036059B (en) | Gradual change valve, gradual change siphon break valve and control method thereof | |
| CN215058542U (en) | High-speed constant-pressure integrated variable pump | |
| CN203114768U (en) | Composite electric proportional valve | |
| CN108231483A (en) | One kind is based on hydraulicdriven three-wheel relay | |
| KR102198503B1 (en) | Hydraulic pump flow control system | |
| CN202991386U (en) | Mechanical and electrical integration control variable plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |