CN201655674U - Explosion-proof power supply device - Google Patents
Explosion-proof power supply device Download PDFInfo
- Publication number
- CN201655674U CN201655674U CN2009201612565U CN200920161256U CN201655674U CN 201655674 U CN201655674 U CN 201655674U CN 2009201612565 U CN2009201612565 U CN 2009201612565U CN 200920161256 U CN200920161256 U CN 200920161256U CN 201655674 U CN201655674 U CN 201655674U
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- CN
- China
- Prior art keywords
- power supply
- explosion
- contact
- proof
- time relay
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- 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
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Abstract
The utility model relates to a power supply device, in particular to an explosion-proof power supply device, which comprises an explosion-proof box. A power supply is arranged in the explosion-proof box. The anode of the power supply is connected with the fixed contact of a time relay switch. The movable contact of the time relay switch is connected with the fixed contact of an electromagnetic relay switch and the contact of an explosion-proof button. The movable contact of the electromagnetic relay switch and the contact of the explosion-proof button are connected with one end of an electromagnetic relay coil and one end of a time relay coil. The other end of the electromagnetic relay coil and the other end of the time relay coil are connected with the cathode of the power supply. Thereby, a loop is formed, finally the required voltage is output through a terminal point XT-1 and a terminal point XT-2 connected with a time relay in parallel and thereby the power supply is guaranteed. The utility model has the advantages of high safety, no signal attenuation, energy saving, convenient and flexible use, low cost, convenient and rapid construction.
Description
Technical field
The utility model belongs to electric supply installation, is specifically related to a kind of explosion-proof electric supply installation.
Background technology
In the dangerous field of the explosion-proof power supplies of some need such as petrochemical industry,, explosion-proof scene takes two kinds of methods usually for providing low-voltage power supply.A kind of method is that DC power supply is placed in the place of safety, by remote cabling, it is caused the scene.Adopt this method need improve supply power voltage to reduce line resistance loss.Another kind of mode is by remote cabling forceful electric power to be incorporated into the deathtrap earlier, and is through modular converter that voltage transitions is extremely required in the deathtrap, output then.The common weak point of this dual mode is: by above description as can be seen, adopt the weak point of this dual mode to be: 1. dangerous, adopt above-mentioned second method High Level AC Voltage to be introduced the great probabilities that accident occurs that increase of deathtrap meeting such as oil depot.2. signal attenuation, power consumption, adopt above-mentioned first method, voltage transformation module is changed in the safety zone, then need to introduce with the long cable direct voltage that oil storage tank field (deathtrap) is required, voltage can be decayed in this process, but for making the instrument operate as normal, needs to improve required voltage, from this angle, to energy-conservation unfavorable; Simultaneously, adopt any of these two kinds of methods, all need long-term power supply.But be not need long-time power supply sometimes in oil storage tank field (deathtrap).3. cost height, which kind of method all needs uninterruptedly to instrument power supply.4. long in time limit, adopt above-mentioned two kinds of methods, cable laying, need than farm labourer's phase.
Summary of the invention
The purpose of this utility model is at the prior art defective, and a kind of the explosion-proof electric supply installation of power supply when needed is provided.
The utility model is achieved in that a kind of explosion-proof electric supply installation, comprises armored cassette, and it is provided with power supply in anti-riot box, the fixed contact of the anode connect hours relay switch of power supply; The break contact of time relay switch connects the contact of the fixed contact and the explosion-proof button of electromagnetic relay switch; The make contact of electromagnetic relay switch is connected an end of electromagnetic relay and time relay coil with the contact of explosion-proof button; The other end of electromagnetic relay and time relay coil is connected to the negative terminal of power supply, thereby formation loop, this explosion-proof electric supply installation comprises terminal point XT-1 and the terminal point XT-2 that is used to export power supply, and this terminal point XT-1 and terminal point XT-2 are in parallel with the time relay.
Effect of the present utility model is: 1. safety, this device place explosion-proof outer in, and only power supply when needed.2. no signal attenuation problem, energy-conservation, the oil depot staff patrols and examines 3 every day, each 10 minutes, then is about 30 minutes/day in oil storage tank field (deathtrap) required direct current supply time, compare with the method that adopts power supply in a day 24 hours, but about 97.9% (23.5h/24h) of saves energy.3. easy to use flexible: supply power voltage is independent assortment according to actual needs, and the time that power supply continues can be regulated arbitrarily.4. cost is low, does not need cable laying.5. easy construction, quick.
Description of drawings
Fig. 1 is the schematic diagram of the circuit part of the explosion-proof electric supply installation that provides of the utility model.
Among the figure: 1. power supply, 2. time relay switch, 3. electromagnetic relay switch, 4. explosion-proof button, 5. electromagnetic relay, the 6. time relay.
Embodiment
As shown in Figure 1, a kind of explosion-proof electric supply installation comprises power supply 1 (VS), the anode of power supply 1
The fixed contact of connect hours relay switch 2 (KT2-1) (left end of KT2-1); The break contact of time relay switch 2 (KT2-1) (right-hand member of KT2-1) connects the fixed contact (left end of KT1-1) of electromagnetic relay switch 3 and the contact of explosion-proof button (SB); The contact of make contact of electromagnetic relay switch 3 (right-hand member of KT1-1) and explosion-proof button 4 (SB) is connected an end of electromagnetic relay 5 (KT1) and the time relay 6 (KT2) coil; The other end of electromagnetic relay 5 (KT1) and the time relay 6 (KT2) coil is connected to the negative terminal of power supply 1 (VS)
Thereby formation loop.By terminal point XT-1 in parallel and XT-2 output required voltage, guarantee power supply at last with the time relay 6.Foregoing circuit is installed in the armored cassette.
The course of work of said apparatus is roughly as follows:
1, the reset condition of circuit is time relay switch 2 closures, and electromagnetic relay switch 3 disconnects;
2, press explosion-proof button 4 (SB) after, its two ends is connected, this moment, power supply 1 (VS), middle electromagnetic relay, interlude relay constituted the loop;
3, according to the operation principle of electromagnetic relay, add certain voltage at the coil two ends, will flow through certain electric current in the coil, thereby generation galvanomagnetic effect, armature will overcome the pulling force of return spring under the effect of electromagnetic attracting force inhales to iron core, thereby drives the moving contact and fixed contact (normally opened contact) adhesive of armature.Thereby this moment electromagnetic relay switch 3 closures;
4, according to the operation principle of the time relay, pick up counting according to required time delay at the energising moment time relay 6;
5, decontrol explosion-proof button (SB),, thereby constitute the self-keeping circuit because the switch (KT1-1 and KT2-1) of the electromagnetic relay 5 and the time relay 6 remains closed;
6, at this moment, terminal XT-1 and XT-2 output voltage connect instrument or equipment;
7, after the time, relay reached setting-up time, break contact (KT2-1) disconnects, and the loop disconnects, and stops power supply, and cuts off output.
Claims (1)
1. an explosion-proof electric supply installation comprises armored cassette, it is characterized in that: power supply (1) is set, the fixed contact of the anode connect hours relay switch (2) of power supply (1) in anti-riot box; The break contact of time relay switch (2) connects the contact of the fixed contact and the explosion-proof button (4) of electromagnetic relay switch (3); The contact of the make contact of electromagnetic relay switch (3) and explosion-proof button (4) is connected an end of electromagnetic relay (5) and the time relay (6) coil; The other end of electromagnetic relay (5) and the time relay (6) coil is connected to the negative terminal of power supply (1), thereby formation loop, this explosion-proof electric supply installation comprises terminal point XT-1 and the terminal point XT-2 that is used to export power supply, and this terminal point XT-1 and terminal point XT-2 are in parallel with the time relay (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201612565U CN201655674U (en) | 2009-07-20 | 2009-07-20 | Explosion-proof power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201612565U CN201655674U (en) | 2009-07-20 | 2009-07-20 | Explosion-proof power supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655674U true CN201655674U (en) | 2010-11-24 |
Family
ID=43120918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201612565U Expired - Fee Related CN201655674U (en) | 2009-07-20 | 2009-07-20 | Explosion-proof power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201655674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261748A (en) * | 2020-11-03 | 2021-01-22 | 安邦电气股份有限公司 | Explosion-proof self-temperature-limiting electric tracing band |
-
2009
- 2009-07-20 CN CN2009201612565U patent/CN201655674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112261748A (en) * | 2020-11-03 | 2021-01-22 | 安邦电气股份有限公司 | Explosion-proof self-temperature-limiting electric tracing band |
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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: 20101124 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |