CN203385707U - High-pressure-chamber-based abnormal gas detection prewarning system - Google Patents
High-pressure-chamber-based abnormal gas detection prewarning system Download PDFInfo
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- CN203385707U CN203385707U CN201320461842.8U CN201320461842U CN203385707U CN 203385707 U CN203385707 U CN 203385707U CN 201320461842 U CN201320461842 U CN 201320461842U CN 203385707 U CN203385707 U CN 203385707U
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Abstract
The utility model relates to a high-pressure-chamber-based abnormal gas detection prewarning system which comprises a microprocessor, an I/O (Input/Output) interface, a liquid crystal display screen, a keyboard, an analog-digital converter, a sampling-and-holding and multiplexer channel selector switch, a flowing pressure conversion circuit, an HCL gas sensor, an SO2 gas sensor, a CO gas sensor and an ozone gas sensor, wherein the I/O interface, the liquid crystal display screen, the keyboard and the analog-digital converter are respectively connected with the microprocessor; the sampling-and-holding and multiplexer channel selector switch, the flowing pressure conversion circuit, the HCL gas sensor, the SO2 gas sensor, the CO gas sensor and the ozone gas sensor are sequentially connected with the analog-digital converter. A control program in a prewarning method adopts two timing interruptions which are used for soft main programs controlled by branches of teh program and a timing interruption 0 controlled by data acquisition. The high-pressure-chamber-based abnormal gas detection prewarning system has the advantages that multiple paths of signals are sequentially acquired through multiplexer channel switching over, analog signals are converted into digital signals identified by a computer, and when the analog signals are compared with a preset range, the alarm can be sent off if the analog signals exceed the preset range, and thus the purpose of prewarning is achieved; a large-screen liquid crystal human-machine interface is provided, and thus a user conveniently and flexibly operates the high-pressure-chamber-based abnormal gas detection prewarning system.
Description
Technical field
The utility model relates to electric substation's technical field, particularly a kind of based on hyperbaric chamber abnormal gas detection early warning system.
Background technology
Electric substation there will be various problems in the long-play process, and one of them problem can produce many gas with foreign flavor exactly
,the operation of the appearance explanation electric substation of these gas with foreign flavor is undesired.In long-term production reality, have been found that electric substation mainly contains four class gas with foreign flavor: power cable burning, insulcrete burning, animal are burnt, the gas of arcing discharge generation.
The main sulfur-bearing of power cable and chlorine, if burnt, the composition of main burning gases is HCl;
The composition that animal is burnt has hydrocarbon, sulfide etc., is mainly SO
2;
The composition of the main burning gases of insulcrete rough burning is CO;
The electric power electric arc of discharge is mainly air ionization, the gas ozone produced.
In order to ensure the normal operation of electric substation, must adopt comprehensive peculiar smell receiving trap for the main gas with foreign flavor of above-mentioned electric substation, this device should detect respectively HCl, SO
2, CO, ozone gas, and electric substation indoor according to certain area of plane in (for example every 15 square metres) place one group of comprehensive peculiar smell receiving trap, form multi-channel gas and detect early warning system.
Summary of the invention
The purpose of this utility model is to provide a kind of and detects early warning system based on the hyperbaric chamber abnormal gas, be applicable to the place that electric substation or other electric panel room etc. are equipped with electrical equipment, the unusual odor that device can distribute scene is monitored, resolution should be 0.1ppM, solves giving warning in advance of the electric power system abnormal gas that (electric discharge caused as equipment failure electric discharge, the plague of rats etc.) send when running into abnormal conditions.
The purpose of this utility model realizes by following technical proposals:
Of the present utility model a kind of based on hyperbaric chamber abnormal gas detection early warning system, it is characterized in that by microprocessor, the I/O interface that microprocessor is connected therewith respectively, LCDs and, keyboard, analog to digital converter, analog to digital converter is connected therewith sampling maintenance and multiplexer channel change-over switch, the stream voltage conversion circuit that sampling keeps and the multiplexer channel change-over switch is connected therewith, flow respectively HCl gas sensor, SO that voltage conversion circuit is connected therewith
2gas sensor, CO gas sensor, ozone gas sensor form.
Described microprocessor is that 8 single-chip microcomputer W77E58 are as core CPU.
Described LCDs is that the giant-screen Chinese character shows liquid crystal display, and described keyboard is 74LS138 code translator keyboard.
Described I/O interface is RS-485I/O interface, and described stream voltage conversion circuit is converted to the current signal of 0-20mA the voltage signal of 0--5V.
Described analog to digital converter is quick 12bit A/D converter.
Adopt and of the present utility modelly a kind ofly based on the hyperbaric chamber abnormal gas, detect early warning system, detect respectively four class gas with foreign flavor, power cable burning, insulcrete burning, animal are burnt, HCL, the SO of arcing discharge generation
2, CO, ozone gas concentration, concentration is converted to the 0-20ma standard signal, resolution is 0.1ppM.
Place one group of comprehensive peculiar smell receiving trap in the indoor average 10-20 square metre area of electric substation, form multi-channel gas and detect early warning system.Be applicable to the place that electric substation or other electric panel room etc. are equipped with electrical equipment, the unusual odor that device can distribute scene is monitored, and solves giving warning in advance of the electric power system abnormal gas that (electric discharge caused as equipment failure electric discharge, the plague of rats etc.) send when running into abnormal conditions.The time of the processing accident that it wins for the operator on duty, accident is eliminated in bud, prevent the extension of the state of affairs, avoid certain economic loss.Solved electric power system owing to there is no sensor monitoring equipment, can't pinpoint the problems in the very first time, thereby incur loss through delay Deal with Time.Adopted the various gas concentration high alarm settings of hyperchannel have been set, and it has been monitored, carried out off-limit alarm while surpassing this value.It has data acquisition, and the detection limit numeral shows, the functions such as curve demonstration.
Characteristics of the present utility model are: each loop can arrange separately bound, when detected value surpasses this value alarm.This device has " the detection limit numeral shows ", the data that each loop of demonstration that can be real-time gathers etc.; System has the date, clock display, and the user can revise in real time to it; This device is furnished with RS-485 interface, by the standard communication protocol, Information Monitoring can be reached to host computer, for the system Centralized Monitoring.
According to the course of work of the present utility model:
Multiple peculiar smell receiver sends the simulating signal of collection to sampling holder, carries out signal maintenance and conditioning.
Delivering to A/D converter (12bit) through the signal of conditioning through the multiplexer channel change-over switch and carry out analog to digital conversion, is analog signal conversion the digital signal that microprocessor can be identified.
The digital signal that conversion is come is put in data-carrier store and stores by microprocessor (W77E58).
LCD controller shows the real-time data in storer.
Data also can reach host computer by RS-485I/O interface, for the system Centralized Monitoring.
By keyboard, 74LS573 is controlled microprocessor.
While exceeding high alarm setting, by input and output I/O interface, carry out early warning.
The utility model has the advantages that: by the multiplexer channel change-over switch, gather successively multiple signals, analog signals is converted to the digital signal of computing machine identification, and compare with the scope of prior setting, if having exceeded scope can report to the police, reach the purpose given warning in advance, be equipped with the large-screen lc man-machine interface, the user is flexible to operation simultaneously.
The accompanying drawing explanation
Fig. 1 is hardware block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, given embodiment further illustrates embodiment of the present utility model.
As shown in Figure 1, of the present utility model a kind of based on hyperbaric chamber abnormal gas detection early warning system, it is characterized in that by microprocessor, the I/O interface that microprocessor is connected therewith respectively, LCDs and, keyboard, analog to digital converter, analog to digital converter is connected therewith sampling maintenance and multiplexer channel change-over switch, the stream voltage conversion circuit that sampling keeps and the multiplexer channel change-over switch is connected therewith, flow respectively HCl gas sensor, SO that voltage conversion circuit is connected therewith
2gas sensor, CO gas sensor, ozone gas sensor form.The multiplexer channel change-over switch is four paths change-over switches in the present embodiment, also can adopt as required the above multiplexer channel change-over switch in four roads.HCL gas sensor, SO
2gas sensor, CO gas sensor, ozone gas sensor form multiple peculiar smell receiver.
Described microprocessor is 8 single-chip microcomputers, and W77E58 is as core CPU.
Described LCDs is that the giant-screen Chinese character shows liquid crystal display, and described keyboard is 74LS138 code translator keyboard.
Described I/O interface is RS-485I/O interface, and described stream voltage conversion circuit is converted to the current signal of 0-20mA the voltage signal of 0--5V.
Described analog to digital converter is the 12bit A/D converter.
Electric substation of the present utility model hyperbaric chamber gas with foreign flavor prior-warning device detects respectively four class gas with foreign flavor, and power cable burning, insulcrete burning, animal are burnt, HCl, the SO of arcing discharge generation
2, CO, ozone gas concentration, concentration is converted to the 0-20ma standard signal, resolution is 0.1ppM;
And switch and gather successively multiple signals by hyperchannel, analog signals is converted to the digital signal of computing machine identification, and compare with the scope of prior setting, if having exceeded scope can report to the police, reach the purpose given warning in advance, be equipped with the large-screen lc man-machine interface, the user is flexible to operation simultaneously.
Claims (5)
1. one kind is detected early warning system based on the hyperbaric chamber abnormal gas, it is characterized in that by microprocessor, microprocessor is connected therewith respectively I/O interface, LCDs, keyboard, analog to digital converter, analog to digital converter is connected therewith sampling maintenance and multiplexer channel change-over switch, the stream voltage conversion circuit that sampling keeps and the multiplexer channel change-over switch is connected therewith, flow respectively HCL gas sensor, SO that voltage conversion circuit is connected therewith
2gas sensor, CO gas sensor, ozone gas sensor form.
2. according to claim 1 a kind of based on hyperbaric chamber abnormal gas detection early warning system, it is characterized in that described microprocessor is that 8 single-chip microcomputer W77E58 are as core CPU.
3. according to claim 1 a kind of based on hyperbaric chamber abnormal gas detection early warning system, it is characterized in that described LCDs is that the giant-screen Chinese character shows liquid crystal display, described keyboard is 74LS138 code translator keyboard.
4. according to claim 1ly a kind ofly based on the hyperbaric chamber abnormal gas, detect early warning system, it is characterized in that described I/O interface is RS-485I/O interface, described stream voltage conversion circuit is converted to the current signal of 0-20mA the voltage signal of 0--5V.
5. according to claim 1 a kind of based on hyperbaric chamber abnormal gas detection early warning system, it is characterized in that described analog to digital converter is quick 12bit A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461842.8U CN203385707U (en) | 2013-07-31 | 2013-07-31 | High-pressure-chamber-based abnormal gas detection prewarning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320461842.8U CN203385707U (en) | 2013-07-31 | 2013-07-31 | High-pressure-chamber-based abnormal gas detection prewarning system |
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| CN203385707U true CN203385707U (en) | 2014-01-08 |
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| CN201320461842.8U Expired - Fee Related CN203385707U (en) | 2013-07-31 | 2013-07-31 | High-pressure-chamber-based abnormal gas detection prewarning system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424514A (en) * | 2013-07-31 | 2013-12-04 | 鞍钢集团矿业公司 | Early-warning system and method based on abnormal gas detection in high-voltage chamber |
| CN106124695A (en) * | 2015-05-06 | 2016-11-16 | 三星电子株式会社 | For controlling method and the electronic equipment thereof of gas |
| CN106771857A (en) * | 2016-12-05 | 2017-05-31 | 广西电网有限责任公司柳州供电局 | Cross-inked polyethylene power cable insulation defect characteristic gas detecting system |
| CN113447606A (en) * | 2021-06-25 | 2021-09-28 | 宝钢湛江钢铁有限公司 | Cable combustion early warning system |
-
2013
- 2013-07-31 CN CN201320461842.8U patent/CN203385707U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424514A (en) * | 2013-07-31 | 2013-12-04 | 鞍钢集团矿业公司 | Early-warning system and method based on abnormal gas detection in high-voltage chamber |
| CN106124695A (en) * | 2015-05-06 | 2016-11-16 | 三星电子株式会社 | For controlling method and the electronic equipment thereof of gas |
| CN106124695B (en) * | 2015-05-06 | 2018-10-26 | 三星电子株式会社 | Method for controlling gas and its electronic equipment |
| US10331954B2 (en) | 2015-05-06 | 2019-06-25 | Samsung Electronics Co., Ltd. | Method for controlling gas and electronic device thereof |
| CN106771857A (en) * | 2016-12-05 | 2017-05-31 | 广西电网有限责任公司柳州供电局 | Cross-inked polyethylene power cable insulation defect characteristic gas detecting system |
| CN113447606A (en) * | 2021-06-25 | 2021-09-28 | 宝钢湛江钢铁有限公司 | Cable combustion early warning system |
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| Date | Code | Title | Description |
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| 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: 20140108 Termination date: 20150731 |
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| EXPY | Termination of patent right or utility model |