CN203189065U - Mining gas pipe fire detector having pollution prompt alarm capability - Google Patents
Mining gas pipe fire detector having pollution prompt alarm capability Download PDFInfo
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- CN203189065U CN203189065U CN 201320154573 CN201320154573U CN203189065U CN 203189065 U CN203189065 U CN 203189065U CN 201320154573 CN201320154573 CN 201320154573 CN 201320154573 U CN201320154573 U CN 201320154573U CN 203189065 U CN203189065 U CN 203189065U
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- infrared
- gas
- chip microcomputer
- fire detector
- quartz window
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Abstract
The utility model relates to detection of ultraviolet and infrared radiation and fire alarm signal output in an instant of gas deflagration, in particular to a mining gas pipe fire detector having a pollution prompt alarm capability. The mining gas pipe fire detector is characterized by comprising a detector casing; and a single chip microcomputer, an ultraviolet sensitive element, an infrared sensitive element and a quartz window are arranged in the detector casing. An infrared receiving pipe and an infrared emission pipe are arranged on the inner side and the outer side of the quartz window respectively. The ultraviolet sensitive element, the infrared sensitive element, the infrared receiving pipe and the infrared emission pipe are respectively electrically connected with the single chip microcomputer, and the single chip microcomputer controls the infrared emission pipe to emit infrared light into the quartz window. The mining gas pipe fire detector is used for rapidly detecting fires which may occur in a coal mine environment or deflagration in gas pipes, and injury to coal mines and personal safety caused by the fires or gas deflagration is avoided.
Description
Technical field
The utility model relates to detection and the fire alarm output of gas detonation moment ultraviolet, infrared radiation, particularly has the gas in mine pipeline fire detector that pollutes the prompting alert capability, be used for the deflagration phenomenon that occurs in fire that the quick detection coal mine environment may occur or the gas pipeline, prevent that fire or gas detonation from damaging colliery and personal safety.
Background technology
The particularly serious gas explosion accident of China frequently takes place in recent years, this has all been represented great concern both at home and abroad, prevents that the generation of gas accident from having become the top priority that guarantees Safety of Coal Mine Production.Simultaneously, coal-bed gas (coal bed gas) is as a kind of high-quality, high heat, clean, " green " energy easily, and the importance of its exploitation is just beginning to be familiar with by people.
Coal and gas safety are adopted theory altogether and have been suggested and have obtained bigger development with technology in recent years, in the process that coal and gas safety are adopted altogether, certainly will cause gas in the middle of extraction equipment or extraction tunnel, to gather, how to adopt an effective measure prevents that gas from blasting in the extraction process, be that coal and gas safety are adopted an important topic theoretical and technical research altogether.
To studies show that of the gas explosion mechanism of transmission and harm, gas temperature, flame speed etc. behind gas explosion positive pressure of shock wave, shock velocity, the ripple, in a quite long segment distance, all has huge destruction, realize that gas is datonation-inhibition in early days, can increase datonation-inhibition probability, dwindle the blast influence basin, reduce the loss that causes because of blast.
Mainly there are following 3 technical barriers in the early stage datonation-inhibition technology of gas at present: 1, in time detect the research and development of gas explosion sensitive period and highly-sensitive detector; 2, the research and development that have the super-fine material of the datonation-inhibition function of explosion arrestment; 3, in blast sensitive period instantaneous injection explosion-suppressing material technology and the research and development of high reliability equipment.The mine subsurface environment is artificial illumination simultaneously, bias light is single, be easy to unusual optical radiation signal that this blast of identification invar produces, therefore at optical signature in sensitive period particularly in gas explosion early stage, development response fast, the optical detector of accurately surveying have absolute important meaning.
The down-hole flame proof mode that China's tradition is used is passive type flame proof modes such as flame proof stone-dust barrier and flame proof fluid barrier, and practical studies proves that when gas and dust explosion intensity was very weak, the measure of passive type flame proof was lost efficacy, and namely can not stop the continuation of explosive flame to be propagated; Simultaneously because reasons such as in the on-the-spot use, the evaporation of ventilating, coal dust pollute, moist cakings, be difficult to play the flame proof effect of expection.
The utility model content
The purpose of this utility model provides has the gas in mine pipeline fire detector that pollutes the prompting alert capability, so that the specific environment at the coal mine gas pipeline, work, also can quick and precisely survey the probe of flame spectrum radiation reliably and with long-term, satisfy the structure design of coal mine environment installation and job requirement.
The purpose of this utility model is to realize like this, has the gas in mine pipeline fire detector that pollutes the prompting alert capability, it is characterized in that: comprise detector housing, the detector housing indoor design has single-chip microcomputer, ultraviolet sensitivity unit, infrared-sensitive unit, quartz window, the outside has infrared receiving tube and infrared transmitting tube respectively in quartz window, ultraviolet sensitivity unit, infrared-sensitive unit, infrared receiving tube and infrared transmitting tube are electrically connected with single-chip microcomputer respectively, and single-chip microcomputer is launched infrared light by the control infrared transmitting tube in quartz window.
Described detector housing is the cylinder of Φ 90 * 120mm, the bottom is the circular flange dish of Φ 220mm, the circular flange dish is connected with the installing hole of 8 Φ 18mm, the probe top is vitreous silica window optical window, quartz window, the flange in the bottom dish all adopts seal washer to carry out encapsulation process with the probe place of combination, the probe indoor design has printed circuit board, ultraviolet sensitivity unit is installed on the circuit board, infrared-sensitive unit, fire alarm, status indicator lamp and infrared transmitting tube, wherein infrared transmitting tube is installed in the quartz window outside, by lead signal is introduced printed circuit board, infrared receiving tube is installed on the probe internal circuit board, and two pipes form 180 ° of correlation relations.
Described quartz window is the slope.
Described ultraviolet sensitivity unit and infrared-sensitive unit are divided into ultraviolet light fulgurite and PbS infrared-sensitive unit.
1 miniature incandescent lamp of described infrared-sensitive unit's place's installation.
It is the infrared transmitting tube of 0.89 μ m that described infrared receiving tube and infrared transmitting tube adopt a pair of radiation peak.
Described single-chip microcomputer is the embedded-type ARM single-chip microcomputer.
The utility model has the advantages that: 1, adopt ultraviolet, infrared-sensitive unit that Fire Radiation spectrum is surveyed respectively, by software algorithm with the two paths of signals phase " with " after, output fire alarm; 2, by structure design, with a pair of infrared transmitting tube, receiving tube be installed in detector window inside and outside, by judging infrared transmitting tube, receiving tube characteristics of signals, judge the degree of contamination of detector window, cue is polluted in output; 3, design CAN EBI reports probe fire alarm and status information according to communications protocol; 4, carry out structure design according to the colliery standard-required, choose the optical window that guarantees probe by optical material, the metal material of selecting to be fit to the use of mine pipeline carries out reasonable structural design, namely guarantee the sealing grade of probe, satisfy probe anti-vibration, shock resistance and corrosion resistant requirement again.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described in further detail:
Fig. 1 is gas in mine pipeline fire detector outline drawing;
Fig. 2 is gas in mine pipeline fire detector theory diagram.
Among the figure: 1, fire alarm, status indicator lamp; 2, infrared transmitting tube; 3, status indicator lamp; 4, ultraviolet sensitivity unit; 5, infrared receiving tube; 6, infrared-sensitive unit; 7, mounting flange; 8, detector housing; 9, single-chip microcomputer; 801, bottom; 802, installing hole; 803, quartz window; 804, probe.
The specific embodiment
Describe each related detailed problem in the technical solutions of the utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, detector housing 8 is the cylinder of Φ 90 * 120mm, and bottom 801 is the circular flange dish of Φ 220mm, and the installing hole 802 by 8 Φ 18mm is installed on the attached seat of installation of gas tube.Detector housing 8 material selection stainless steels 316, its intensity and corrosion resistance satisfy mining standard.The probe top is vitreous silica window 803 optical windows, and its fusing point height, hardness is good, chemical stability is good, heat-resisting and advantage such as shock resistance.803 pairs of ultraviolets of quartz window, infrared transmissivity preferably arranged all.Quartz window 803, the blue dish 801 in bottom all adopt seal washer to carry out encapsulation process with probe 804 junctions, have guaranteed the sealing class requirement of probe IP65.Probe 804 indoor designs have printed circuit board, ultraviolet sensitivity unit 4, infrared-sensitive unit 6, fire alarm, status indicator lamp 1 and infrared transmitting tube 2 are installed on the circuit board, wherein infrared transmitting tube 2 is installed in quartz window 803 outsides, by lead signal is introduced printed circuit board, infrared receiving tube 5 is installed on probe 804 internal circuit boards, two pipes form 180 ° of correlation relations, by regularly detecting the signal of telecommunication of infrared transmitting tube 2, infrared receiving tube 5, realize quartz window 803 pollution detections.Quartz window 803 part-structures are designed to 30 ° of slopes, by accurate Calculation, select the installation site of infrared-sensitive unit 6, ultraviolet sensitivity unit 4, have guaranteed the requirement of ° optics visual field, whole probe ± 50.Internal circuit board is installed on the housing by 4 screws, and the intensity of whole probe anti-vibration, anti-mechanical shock all satisfies the mining equipment requirement.
Fig. 2 is gas in mine pipeline fire detector housing block diagram, detector housing comprises: single-chip microcomputer 9, ultraviolet sensitivity unit 4, infrared-sensitive unit 6, quartz window 803, the outside has infrared receiving tube 5 and infrared transmitting tube 2 respectively in quartz window 803, ultraviolet sensitivity unit 4, infrared-sensitive unit 6, infrared receiving tube 5 and infrared transmitting tube 2 are electrically connected with single-chip microcomputer 9 respectively, single-chip microcomputer 9 is launched infrared light by control infrared transmitting tube 2 in quartz window 803, the infrared light that the infrared transmitting tube 2 that single-chip microcomputer 9 receives by detection infrared receiving tube 5 sends, to determine the light transmission of quartz window 803, pollute if occur, influence probe to the detectivity of insight radiation, then provide the pollution cue immediately, thereby guarantee the detectivity of 6 pairs of Fire Radiations of ultraviolet sensitivity unit 4 and infrared-sensitive unit; The alarm threshold value of single-chip microcomputer inner setting ultraviolet sensitivity unit 4 and infrared-sensitive unit 6, by detecting ultraviolet 0.2 μ m that the burning of outside methane gas produces and the signal amplitude of infrared 2.7 μ m, provide fire alarm according to software algorithm, realize detection quick and precisely and identification to Fire Radiation.
We know that the combustion characteristics of methane gas meets the hydrocarbon compound combustion pattern, there are two radiation peaks in it at ultraviolet 0.2 μ m and infrared 2.7 μ m, by selecting suitable ultraviolet sensitivity unit 4 and infrared-sensitive unit 6 for use, can realize the signal extraction to these two wave bands, ultraviolet sensitivity unit 4 and infrared-sensitive unit 6 are through opto-electronic conversion, the output signal of telecommunication is given single-chip microcomputer 9, single-chip microcomputer 9 passes through software algorithm, judge whether to be real fiery signal, thereby realize detection quick and precisely and identification to the gas detonation.
Ultraviolet sensitivity unit is high-pressure work, driving power comprises, the DC12V dc source, inverter, inverter is converted to DC600V with probe DC12V dc source, the high-voltage power supply of output 1mA, for ultraviolet sensitivity unit provides the high-pressure work power supply, the discharge pulse of ultraviolet sensitivity unit is continuous spike, voltage amplitude is uneven, realizing shaping work to discharge pulse by the inverter circuit of design band application schmitt trigger, is continuous square wave through the discharge pulse after the shaping, sends into the single-chip processor i/o mouth after isolating, namely realized the collection of ultraviolet light photo signal, conversion has reached isolation effect again.
The timing alignment that 1 miniature incandescent lamp is used for infrared-sensitive unit is installed near infrared-sensitive unit, on the optical path of infrared-sensitive unit and incandescent lamp, with the shell perforate of infrared-sensitive unit, guarantee to shine infrared-sensitive unit when incandescent lamp is lighted, single-chip microcomputer is the driving signal of the bright incandescent lamp of output point regularly, after lighting incandescent lamp, gather the signal amplitude of infrared-sensitive unit again, this signal amplitude is stored in the single-chip microcomputer, background environment as this period, when the signal amplitude that collects infrared-sensitive unit in this period surpasses the background environment value, namely regard as infrared fire alarm.
It is the infrared transmitting tube of 0.89 μ m that infrared receiving tube 5 and infrared transmitting tube 2 adopt a pair of radiation peak, every 60s once drives infrared transmitting tube by single-chip microcomputer, make transmitting tube export the infrared rays of 0.89 μ m, output time continues about about 100ms, detect the amplitude output signal of infrared receiving tube then, infrared receiving tube adopts electric resistance partial pressure, when receiving infrared radiation, can amplify shaping by the opto-electronic conversion output voltage signal through level sampling later, the output analog voltage signal, because of the receiving tube output signal fainter, therefore the gain of amplifying circuit design is bigger, suitably increases the inhibition of filtering and bandwidth, thereby has guaranteed stability and the output amplitude of signal.This analog signal is directly sent into the AD port of single-chip microcomputer, after the AD conversion, after comparing with the alarm threshold value of setting, monitor the intensity variation that receiving tube receives like this, can obtain the window glass degree of contamination, the luminous intensity that receives when receiving tube drops to a certain degree, and single-chip microcomputer provides the pollution cue by the CAN bus.
Single-chip microcomputer is by the embedded-type ARM chip microcontroller, and this singlechip has 2 road CAN controllers, and therefore the CAN drive circuit of outside employing standard can be realized the CAN bus communication function of probe.
Gas in mine pipeline fire detector software flow is:
1) enters the starting stage;
2) remove quartz window 803 surfaces;
3) single-chip microcomputer 9 receives the infrared light that sends in the quartz window 803 by infrared receiving tube 5;
4) detect infrared receiving tube 5 light intensity;
5) infrared receiving tube 5 light intensity signals that detect are stored as standard value;
6) enter detection-phase;
7) single-chip microcomputer 9 receives the infrared light that sends in the quartz window 803 by infrared receiving tube 5;
8) detect infrared receiving tube 5 light intensity;
9) infrared receiving tube 5 light intensity signals and the standard value of starting stage that detects compared;
10) whether greater than; Being to change step 11), is not to change step 12);
11) quartz window 803 surperficial informations are removed in output, reenter step 6);
12) single-chip microcomputer 9 is by driving the work of standard source light, and whether the receiving light power signal that detects ultraviolet sensitivity unit 4 or infrared-sensitive unit 6 is normal, is not, changes step 13), is, changes step 14);
13) output ultraviolet sensitivity unit 4 or infrared-sensitive unit 6 circuit abnormality informations reenter step 6);
14) timesharing detects the receiving light power signal of ultraviolet sensitivity unit 4 or infrared-sensitive unit 6;
15) whether ultraviolet sensitivity unit 4 or infrared-sensitive unit 6 receiving light power signals arrive alarming value, are to change step 16), be not to change step 17);
16) output gas pipeline fire alarm information reenters step 6);
17) reenter step 6).
Claims (7)
1. has the gas in mine pipeline fire detector that pollutes the prompting alert capability, it is characterized in that: comprise detector housing (8), detector housing (8) indoor design has single-chip microcomputer (9), ultraviolet sensitivity unit (4), infrared-sensitive unit (6), quartz window (803), the outside has infrared receiving tube (5) and infrared transmitting tube (2) respectively in quartz window (803), ultraviolet sensitivity unit (4), infrared-sensitive unit (6), infrared receiving tube (5) and infrared transmitting tube (2) are electrically connected with single-chip microcomputer (9) respectively, and single-chip microcomputer (9) is launched infrared light by control infrared transmitting tube (2) in quartz window (803).
2. according to claim 1 have a gas in mine pipeline fire detector that pollutes the prompting alert capability, it is characterized in that: described detector housing (8) is the cylinder of Φ 90 * 120mm, bottom (801) is the circular flange dish of Φ 220mm, the circular flange dish is connected with the installing hole (802) of 8 Φ 18mm, the probe top is vitreous silica window (803) optical window, quartz window (803), flange in the bottom dish and probe (804) junction all adopts seal washer to carry out encapsulation process, probe (804) indoor design has printed circuit board, ultraviolet sensitivity unit (4) is installed on the circuit board, infrared-sensitive unit (6), fire alarm, status indicator lamp (1) and infrared transmitting tube (2), wherein infrared transmitting tube (2) is installed in quartz window (803) outside, by lead signal is introduced printed circuit board, infrared receiving tube (5) is installed on probe (804) internal circuit board, and two pipes form 180 ° of correlation relations.
3. according to claim 1 have a gas in mine pipeline fire detector that pollutes the prompting alert capability, and it is characterized in that: described quartz window (803) is the slope.
4. according to claim 1 have a gas in mine pipeline fire detector that pollutes the prompting alert capability, and it is characterized in that: described ultraviolet sensitivity unit (4) and infrared-sensitive unit (6) are divided into ultraviolet light fulgurite and PbS infrared-sensitive unit.
5. according to claim 1 have a gas in mine pipeline fire detector that pollutes the prompting alert capability, and it is characterized in that: described infrared-sensitive unit (6) locates to install 1 miniature incandescent lamp.
6. according to claim 1 have a gas in mine pipeline fire detector that pollutes the prompting alert capability, and it is characterized in that: described infrared receiving tube (5) and a pair of radiation peak of infrared transmitting tube (2) employing are the infrared transmitting tube of 0.89 μ m.
7. according to claim 1 have a gas in mine pipeline fire detector that pollutes the prompting alert capability, and it is characterized in that: described single-chip microcomputer is the embedded-type ARM single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154573 CN203189065U (en) | 2013-04-01 | 2013-04-01 | Mining gas pipe fire detector having pollution prompt alarm capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154573 CN203189065U (en) | 2013-04-01 | 2013-04-01 | Mining gas pipe fire detector having pollution prompt alarm capability |
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| Publication Number | Publication Date |
|---|---|
| CN203189065U true CN203189065U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320154573 Expired - Lifetime CN203189065U (en) | 2013-04-01 | 2013-04-01 | Mining gas pipe fire detector having pollution prompt alarm capability |
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| Country | Link |
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| CN (1) | CN203189065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768360A (en) * | 2016-12-19 | 2017-05-31 | 上海安誉智能科技有限公司 | The dirty explosion-proof flame detector of one kind inspection |
-
2013
- 2013-04-01 CN CN 201320154573 patent/CN203189065U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768360A (en) * | 2016-12-19 | 2017-05-31 | 上海安誉智能科技有限公司 | The dirty explosion-proof flame detector of one kind inspection |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |