CN202840476U - Misoperation-preventing control device for electrical facilities in combustible gas environment - Google Patents
Misoperation-preventing control device for electrical facilities in combustible gas environment Download PDFInfo
- Publication number
- CN202840476U CN202840476U CN 201220478083 CN201220478083U CN202840476U CN 202840476 U CN202840476 U CN 202840476U CN 201220478083 CN201220478083 CN 201220478083 CN 201220478083 U CN201220478083 U CN 201220478083U CN 202840476 U CN202840476 U CN 202840476U
- Authority
- CN
- China
- Prior art keywords
- combustible gas
- contact
- auxiliary relay
- gas detector
- closed contact
- 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.)
- Expired - Fee Related
Links
- 238000009434 installation Methods 0.000 claims description 12
- 238000004880 explosion Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 206010001541 Akinesia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- RUZYUOTYCVRMRZ-UHFFFAOYSA-N doxazosin Chemical compound C1OC2=CC=CC=C2OC1C(=O)N(CC1)CCN1C1=NC(N)=C(C=C(C(OC)=C2)OC)C2=N1 RUZYUOTYCVRMRZ-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Ventilation (AREA)
Abstract
An anti-misoperation control device for electrical facilities in a combustible gas environment is applied to the safety protection of the electrical facilities in the combustible gas environment of an oil-gas field. Is characterized in that: an output normally closed contact and an output normally open contact are arranged in the combustible gas detector, the output normally closed contact is connected with a control circuit starting button through a lead, the other end of the control circuit starting button is connected with a coil of a first intermediate relay, one end of the normally open contact of the first intermediate relay is connected to a stopping button, the other end of the normally open contact of the first intermediate relay is connected to the normally closed contact of a second intermediate relay, the normally closed contact of the second intermediate relay is connected to a main alternating current contactor, and a main contact of the main alternating current contactor is connected with a motor; and an output normally open contact of the combustible gas detector is connected to a coil of the second intermediate relay through a lead. The effect is as follows: when the electrical control facility is in the leaked combustible gas, the execution of the flow task is terminated early, and further operation is prevented from causing explosion.
Description
Technical field
The utility model relates to oil gas field production gas technology field, and particularly the natural gas Environmental security is the electric installation of a kind of prevention in the combustible gas environment produces blast because of action device.
Background technology
At present; at Oil Field; many production facilities have some supporting electrical control facilities; although these facilities are installed in relatively independent place; but because some places are connected by the production facility of cable trough with the oil gas place; when the generation oil-gas pipeline breaks; often have crude oil, natural gas leaking seals in cable trough; then enter the phenomenon of electrical control cabinet; if this moment, existing electrical control cabinet did not all have corresponding protective device; when having circuit to move by manual operation or automatic control, the spark of the generation scene of will causing is dodged quick-fried and is led to major accident.
The utility model content
The purpose of this utility model is: a kind of combustible gas environment electric installation false action-proof control device is provided, reduces or avoid natural gas to have that controlling electric device causes an explosion accident in the situation.
The technical solution adopted in the utility model is: combustible gas environment electric installation false action-proof control device comprises combustible gas detector, control loop start button, the first auxiliary relay, the second auxiliary relay, main A.C. contactor and stop button; It is characterized in that: output normally-closed contact and output normally opened contact are arranged in the combustible gas detector, the output normally-closed contact of combustible gas detector connects the control loop start button by wire, the other end of control loop start button connects the coil of the first auxiliary relay, one end of the normally opened contact of the first auxiliary relay is connected to stop button, the other end of the normally opened contact of the first auxiliary relay is connected to the normally-closed contact of the second auxiliary relay, the normally-closed contact of the second auxiliary relay is connected to main A.C. contactor again, and the main contact of main A.C. contactor 7 connects motor; The output normally opened contact of combustible gas detector is connected to the coil of the second auxiliary relay by wire in addition.
The model that combustible gas detector adopts is the S104 combustible gas detector.Alarm can utilize separately its contact to realize protection with the contact output function.
The operation principle of summary combustible gas environment electric installation false action-proof control device.Consult Fig. 1: when motor M is moved, when the gas leakage concentration of combustible gas detector 1 detection reaches the one-level alarm limit, the output normally opened contact 3 of combustible gas detector 1 is connected, 6 actions of the second auxiliary relay, the normally-closed contact of the second auxiliary relay 6 disconnects, main A.C. contactor 7 dead electricity, the equipment that main A.C. contactor 7 connects is out of service.When the combustible gas detector detects gas leakage concentration and reaches the secondary alarm limit, the output normally-closed contact 2 of combustible gas detector 1 disconnects, starting the loop is cut off, even control circuit can not be connected and start to execute-in-place control loop start button 4, ignite natural gas thereby produce spark when avoiding starting behind the gas leakage.
The beneficial effects of the utility model: the utility model combustible gas environment electric installation false action-proof control device, when the electrical control facility is in the combustible gas of leakage, reaching one-level warning restriction, also not during explosion limit, the execution of premature termination flow tasks prevents that further operation causes blast; When concentration reaches secondary warning restriction, control operation is restricted, even have people's misoperation to supress action button this moment, because control loop is cut off akinesia, thereby the accident of avoiding misoperation to cause exploding occurs.Fuel gas detects market demand to the electric installation control of hazardous environment, implements the safeguard protection of electric installation operation in the fuel gas environment, realizes under the hazardous environment explosion-proof.
Description of drawings
Fig. 1 is the utility model combustible gas environment electric installation false action-proof control device structural representation.
Among the figure, the 1-combustible gas detector, 2-exports normally-closed contact, and 3-exports normally opened contact, 4-control loop start button, 5-the first auxiliary relay, 6-the second auxiliary relay, 7-master's A.C. contactor, 8-stop button.
Embodiment
Embodiment 1: consult Fig. 1. and combustible gas environment electric installation false action-proof control device comprises combustible gas detector 1, control loop start button 4, the first auxiliary relay 5, the second auxiliary relay 6, main A.C. contactor 7 and stop button 8.The model that combustible gas detector 1 adopts is the S104 combustible gas detector.
Output normally-closed contact 2 and output normally opened contact 3 are arranged in the combustible gas detector 1, the output normally-closed contact 2 of combustible gas detector 1 connects control loop start button 4 by wire, the other end of control loop start button 4 connects the coil of the first auxiliary relay 5, one end of the normally opened contact of the first auxiliary relay 5 is connected to stop button 8, the other end of the normally opened contact of the first auxiliary relay 5 is connected to the normally-closed contact of the second auxiliary relay 6, the normally-closed contact of the second auxiliary relay 6 is connected to main A.C. contactor 7 again, and the main contact of main A.C. contactor 7 connects motor; The output normally opened contact 3 of combustible gas detector 1 is connected to the coil of the second auxiliary relay 6 by wire in addition.
Claims (2)
1. a combustible gas environment electric installation false action-proof control device comprises combustible gas detector (1), control loop start button (4), the first auxiliary relay (5), the second auxiliary relay (6), main A.C. contactor (7) and stop button (8); It is characterized in that: output normally-closed contact (2) and output normally opened contact (3) are arranged in the combustible gas detector (1), the output normally-closed contact (2) of combustible gas detector (1) connects control loop start button (4) by wire, the other end of control loop start button (4) connects the coil of the first auxiliary relay (5), one end of the normally opened contact of the first auxiliary relay (5) is connected to stop button (8), the other end of the normally opened contact of the first auxiliary relay (5) is connected to the normally-closed contact of the second auxiliary relay (6), the normally-closed contact of the second auxiliary relay (6) is connected to main A.C. contactor (7) again, and the main contact of main A.C. contactor (7) connects motor; The output normally opened contact (3) of combustible gas detector (1) is connected to the coil of the second auxiliary relay (6) by wire in addition.
2. combustible gas environment electric installation false action-proof control device according to claim 1 is characterized in that: the model that combustible gas detector (1) adopts is the S104 combustible gas detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220478083 CN202840476U (en) | 2012-09-18 | 2012-09-18 | Misoperation-preventing control device for electrical facilities in combustible gas environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220478083 CN202840476U (en) | 2012-09-18 | 2012-09-18 | Misoperation-preventing control device for electrical facilities in combustible gas environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202840476U true CN202840476U (en) | 2013-03-27 |
Family
ID=47952092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220478083 Expired - Fee Related CN202840476U (en) | 2012-09-18 | 2012-09-18 | Misoperation-preventing control device for electrical facilities in combustible gas environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202840476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629848A (en) * | 2015-12-19 | 2016-06-01 | 山河智能装备股份有限公司 | Rescue equipment monitoring method and controller |
-
2012
- 2012-09-18 CN CN 201220478083 patent/CN202840476U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629848A (en) * | 2015-12-19 | 2016-06-01 | 山河智能装备股份有限公司 | Rescue equipment monitoring method and controller |
| CN105629848B (en) * | 2015-12-19 | 2018-05-25 | 山河智能装备股份有限公司 | A kind of monitoring method and controller of equipment of speedily carrying out rescue work |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20210918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |