CN104405671A - Draught fan protection device in dangerous gas environment - Google Patents
Draught fan protection device in dangerous gas environment Download PDFInfo
- Publication number
- CN104405671A CN104405671A CN201410760381.3A CN201410760381A CN104405671A CN 104405671 A CN104405671 A CN 104405671A CN 201410760381 A CN201410760381 A CN 201410760381A CN 104405671 A CN104405671 A CN 104405671A
- Authority
- CN
- China
- Prior art keywords
- protection device
- draught fan
- blower fan
- gas environment
- server
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
Abstract
The invention discloses a draught fan protection device in dangerous gas environment. The draught fan protection device in dangerous gas environment comprises a protection current mutual inductor, the protection current mutual inductor is connected with a relay, and the relay controls switching on and switching off of the draught fan. A sampling pump pumps sampling gas into a gas chamber in order to judge the level of gas concentration; the gas chamber is connected with a central processor; the central processor transmits information to a base station via a GPRS/CDMA module on a peripheral control module; the base station uploads the information to a server; and the server uploads the information to an upper computer. The draught fan protection device in dangerous gas environment has significant advantages of simple structure and low cost; the service life and service time of the draught fan are well protected by adding the protection current mutual inductor.
Description
technical field
The invention belongs to the fan protection device under a kind of gaseous environment, a kind of fan protection device under hazardous gas environment is specifically provided, by protective current transformer, the relay controlling blower fan is protected.
background technique
At municipal sewage system pipe network, sewage treatment works, septic tank, the place such as biomass pool, garbage disposal plant, produces and there is multiple murder by poisoning, the hazardous gas such as flammable, explosive, as methane, and hydrogen sulfide, carbon monoxide etc.
The applicant had once applied for that the patent No. was a kind of hazardous gas on-line monitoring and the automatic controller of 200820100930.4, and number of patent application be 200920293815.8 hazardous gas automatically detect and processing system., above patent openly utilizes the GPRS/CDMA communication technology, carries out 24 hours on-line monitorings to the hazardous gas in above-mentioned place, and the function such as the automatic alarm of gas.
When occurring that protective current transformer controls the out-of-work situation of blower fan; because the concentration in detection device can not get getting rid of and making detection gas concentration raise; when reaching gas concentration alarming value; central processing controller report to the police, thus warning message is transferred to upper-position unit allows monitor staff note blower fan breaks down.
The deficiencies in the prior art are: when protective current transformer causes blower fan to quit work because of power failure; thus reach the effect of warning because the concentration detecting gas raises; result in gas concentration raise and can not get getting rid of; by manually detecting, blower fan task again must be made.So just pay a large amount of manpowers.
Summary of the invention
The object of this invention is to provide the fan protection device under a kind of hazardous gas environment; when power-supply system breaks down with when producing very large electric current during short circuit; the relay that protective current transformer controls blower fan quits work, thus plays the effect of protection to blower fan.
Fan protection device under a kind of hazardous gas environment of the present invention is the current transformer that with the addition of protection on original system.When power-supply system breaks down, or because the situation that the situation of short circuit causes electric current excessive appears in circuit, the relay that protective current transformer controls blower fan turns off, thus provides the protective action to blower fan.
For achieving the above object, technological scheme of the present invention is:
A fan protection device under hazardous gas environment, comprises protective current transformer, and protective current transformer is connected with relay, controls the shutoff of blower fan; The outlet of blower fan connects air chamber; The signal of air chamber is connected to central processing unit (CPU); Central processing unit (CPU) is connected with control system again, controls control system; Control system is connected with GPRS/CDMA module simultaneously, GPRS/CDMA module by information transmission on base station, base station again by information transmission to server, server again by information transmission on upper-position unit.
Air chamber also connects a sampling pump.
Control system is connected with acoustooptic alarm.
Server be by internet by information transmission on upper-position unit.
The remarkable result of invention is: structure is simple, and cost is low, can this play a protective role to blower fan very well by protective current transformer, thus to extending the working life of blower fan, ensure that the stable operation of whole system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the present invention is described in further detail.
As shown in Figure 1, the present invention includes protective current transformer 3, protective current transformer is one of visual plant of relay protection system, and can the whether accurate direct relation of its Output rusults the secondary device such as protective relaying device and supervisory device and normally be run.The concrete effect of protective current transformer 3 is, when power-supply system breaks down or occur short circuit, causing trouble electric current, than the normal current several times even tens times greatly during normal work, causes protective current transformer saturated.The relay 4 that protective current transformer 3 controls on blower fan 5 turns off, thus causes blower fan 5 to quit work, and plays the effect of protection blower fan.
After blower fan 5 quits work, the air chamber 7 detecting gas is interior because blower fan 5 quits work and causes gas concentration to raise, and the concentration that sampling pump 8 collects air chamber 7 raises.When sensor in air chamber 7 detects that concentration raises, the alarm signal detecting blower fan 5 stall is transferred on central processing unit (CPU) 1.
After central processing unit (CPU) 1 obtains the alarm signal of concentration superelevation, by the alarm signal of blower fan 5 stall by the operational amplifier LMV358 voltage compare output switch amount signal in control system 2, control acoustooptic alarm 6 by solid-state relay SSR-10A to report to the police, by GPRS/CDMA module 9, warning message is transferred on base station 10 simultaneously.The alarm signal of blower fan 5 stall is transferred on server 11 by base station 10, and the alarm signal of blower fan 5 stall, by internet, is transferred on upper-position unit 12 by server 11.After upper-position unit 12 obtains alarm signal, monitor staff is reminded to note the warning of blower fan 5 stall.
After monitor staff obtains the alarm signal of blower fan 5 stall, the other runnability detecting blower fan 5 of out of order device of at once sending someone, when blower fan 5 failture evacuation, system roll-back.
Central processing unit (CPU) can adopt the single-chip microcomputer of STC89C52RC or STC12C5A60S2.
The all devices used in this programme are commercially available prod, and in scheme, not detailed description part is known technology, is not described in detail in this.
Claims (4)
1. the fan protection device under hazardous gas environment, is characterized in that: comprise protective current transformer (3); Protective current transformer (3) is connected with relay (4), controls the shutoff of blower fan (5); Blower fan (5) connects air chamber (7); The signal of air chamber (7) is connected to central processing unit (CPU) (1); Central processing unit (CPU) (1) is connected with control system (2) again, controls control system (2); Control system (2) is connected with GPRS/CDMA module (9) simultaneously, GPRS/CDMA module (9) by information transmission on base station (10), base station (10) again by information transmission to server (11), server (11) again by information transmission on upper-position unit (12).
2. fan protection device according to claim 1, is characterized in that: air chamber (7) also connects a sampling pump (8).
3. fan protection device according to claim 1, is characterized in that: control system (2) is connected with acoustooptic alarm (6).
4. fan protection device according to claim 1, is characterized in that: server (11) be by internet by information transmission on upper-position unit (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760381.3A CN104405671A (en) | 2014-12-12 | 2014-12-12 | Draught fan protection device in dangerous gas environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760381.3A CN104405671A (en) | 2014-12-12 | 2014-12-12 | Draught fan protection device in dangerous gas environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405671A true CN104405671A (en) | 2015-03-11 |
Family
ID=52643325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410760381.3A Pending CN104405671A (en) | 2014-12-12 | 2014-12-12 | Draught fan protection device in dangerous gas environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131320A (en) * | 2017-12-27 | 2018-06-08 | 中国船舶重工集团公司第七0三研究所 | A kind of aspirating smoke detector fan safe drive module |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893113A (en) * | 1988-01-29 | 1990-01-09 | Park Sea C | Gas alarm and detoxification heating systems |
| CN201307234Y (en) * | 2008-12-10 | 2009-09-09 | 钟啸风 | Online monitoring and automatic control device for hazardous gas |
| CN201561964U (en) * | 2009-12-15 | 2010-08-25 | 钟啸风 | Dangerous gas automatic detection and treatment system |
| CN201780477U (en) * | 2010-07-26 | 2011-03-30 | 徐红霞 | Gas alarm multi-way controller |
| CN202102987U (en) * | 2011-04-06 | 2012-01-04 | 淮南市智能电器厂 | Mining explosion-proof breaker circuit |
| CN203537686U (en) * | 2013-10-08 | 2014-04-09 | 河南省济源市矿用电器有限责任公司 | Mining flame-proof type compressor and transformer comprehensive protection device |
| CN204299918U (en) * | 2014-12-12 | 2015-04-29 | 重庆市荣冠科技有限公司 | Fan protection device under a kind of hazardous gas environment |
-
2014
- 2014-12-12 CN CN201410760381.3A patent/CN104405671A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893113A (en) * | 1988-01-29 | 1990-01-09 | Park Sea C | Gas alarm and detoxification heating systems |
| CN201307234Y (en) * | 2008-12-10 | 2009-09-09 | 钟啸风 | Online monitoring and automatic control device for hazardous gas |
| CN201561964U (en) * | 2009-12-15 | 2010-08-25 | 钟啸风 | Dangerous gas automatic detection and treatment system |
| CN201780477U (en) * | 2010-07-26 | 2011-03-30 | 徐红霞 | Gas alarm multi-way controller |
| CN202102987U (en) * | 2011-04-06 | 2012-01-04 | 淮南市智能电器厂 | Mining explosion-proof breaker circuit |
| CN203537686U (en) * | 2013-10-08 | 2014-04-09 | 河南省济源市矿用电器有限责任公司 | Mining flame-proof type compressor and transformer comprehensive protection device |
| CN204299918U (en) * | 2014-12-12 | 2015-04-29 | 重庆市荣冠科技有限公司 | Fan protection device under a kind of hazardous gas environment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131320A (en) * | 2017-12-27 | 2018-06-08 | 中国船舶重工集团公司第七0三研究所 | A kind of aspirating smoke detector fan safe drive module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |