CN205247554U - Air tubular line type heat fire detector that can real -time supervision pipeline trouble - Google Patents
Air tubular line type heat fire detector that can real -time supervision pipeline trouble Download PDFInfo
- Publication number
- CN205247554U CN205247554U CN201521080790.5U CN201521080790U CN205247554U CN 205247554 U CN205247554 U CN 205247554U CN 201521080790 U CN201521080790 U CN 201521080790U CN 205247554 U CN205247554 U CN 205247554U
- Authority
- CN
- China
- Prior art keywords
- circuit
- micro
- connects
- signal
- pipeline
- 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.)
- Active
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides an air tubular line type heat fire detector that can real -time supervision pipeline trouble, include: survey the pipeline, measure gas circuit and circuit board, the circuit board includes: micropressure sensor, signal sampling modulate circuit, CPU circuit, control circuit, power switching circuit, output circuit, terminal row, survey the pipeline and connect the measurement gas circuit, measuring the gas circuit and being connected with micropressure sensor's an input, another input of micropressure sensor is connected with the atmosphere through referring to the gas circuit, signal sampling modulate circuit is connected to micropressure sensor's output, and passing signal sampling modulate circuit turns into pressure signal and transferes the CPU circuit behind the signal of telecommunication, the CPU circuit to the signal that signal collection circuit sent here sample, analysis and processing, the CPU circuit passes through the work of device in the control circuit control survey gas circuit. The utility model discloses can be in real time to surveying pipeline the leak gas fault detection and the fault detection that regularly stops up and leak gas.
Description
Technical field
The utility model relates to fire detecting and alarm technical field in safety engineering discipline, especially can be used for the severe places of environment such as all kinds of long tunnels of industrial circle, large-scale workshop, warehouse, track traffic such as the early detection of fire and electric power, metallurgy, petrochemical industry, at fire early period of origination, abnormal state detection is reported to the police, air pipe-type line type heat fire detector that can Real-Time Monitoring pipeline fault.
Background technology
In existing air pipe-type line type heat fire detector technology, the application of existence has first generation air pipe-type line type heat fire detector and second generation air pipe-type line type heat fire detector.
First generation air pipe-type line type heat fire detector is mainly implemented to report to the police by gathering switching value temperature signal. Its groundwork principle is when temperature is during in normal condition, and in sound-pipe, the air pressure of sealing keeps balance with extraneous, even if temperature generation minor fluctuations causes overpressure to raise, still can make external and internal pressure maintain balance by bleeder port. In the time of breaking out of fire, scene temperature sharply rises, and the air pressure in sound-pipe sharply increases, and its speed of expansion is far longer than the regulating power of bleeder port, now measures the air bellows action of air pressure change, and detector sends fire alarm. There are two large shortcomings in first generation air pipe-type line type heat fire detector: first, the gas leakage of sound-pipe or obstruction can not detect automatically, lean on the artificial time in accordance with regulations, whether adopt simple artificial method of gas injection to carry out signal piping has obstruction or gas leakage to occur, if sound-pipe leaks gas in sense cycle interval, now breaking out of fire cannot be reported to the police. The secondth, the principle of response fire is to rely on the mechanical contact closure of air diaphragm capsule to realize, this switching value manner of execution has all proved that from theory and practice rate of false alarm is higher, reason is that detector is without data analysis capabilities, cannot judge relatively overpressure expansion rate, and get rid of the wrong report being caused by environmental temperature fluctuation.
Second generation air pipe-type line type heat fire detector makes certain improvements on the basis of first generation detector, increase pressure sensor, gathering analog quantity temperature signal implements to report to the police, the leakage of pipeline, jam detection rely on motor regularly to drive cam gear to promote air chamber pipeline Self-pressurizing agri are realized, but still existing problems. Driven by motor camming movement that what the self-checking unit of detector adopted is occurs that certain stroke promotes air chamber and inflates self-inspection, and usually find that in actual applications cam is difficult to accomplish all fit like a glove in interlock process at every turn, will make like this air chamber gas indoor gas all can not be beaten to the greatest extent in the time of self-inspection, can not check thereby can examine while causing self-inspection the end leakage failure of surveying pipeline.
Due to current air pipe-type line type heat fire detector existing problems, so there is in actual applications limitation, be unfavorable for fire prevention and control.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of air pipe-type line type heat fire detector that can Real-Time Monitoring pipeline fault, and it is simple in structure, detection accuracy is high, sensitivity can arrange adjustment, automaticity is high, real-time, safe and reliable. The technical solution adopted in the utility model is:
Air pipe-type line type heat fire detector that can Real-Time Monitoring pipeline fault, comprising: survey pipeline, measure gas circuit and circuit board;
Described circuit board comprises: micro-pressure sensor, signal sampling modulate circuit, cpu circuit, control circuit, power-switching circuit, output circuit, terminal row;
Survey pipeline and connect measurement gas circuit; Measure gas circuit and be connected with an input of micro-pressure sensor, another input of micro-pressure sensor is connected with atmosphere by reference to gas circuit; The output of micro-pressure sensor connects signal sampling modulate circuit, passes to cpu circuit after pressure signal being converted into the signal of telecommunication by signal sampling modulate circuit; The signal that cpu circuit is sent here signal sample circuit is sampled, analyzes and is processed; The lead-out terminal that cpu circuit is arranged by output circuit splicing ear;
Cpu circuit is by the work of device in control circuit control survey gas circuit; Power-switching circuit is for powering to signal sampling modulate circuit, cpu circuit, output circuit, control circuit and micro-pressure sensor.
Further, described measurement gas circuit comprises: micro air pump, the first magnetic valve, the second magnetic valve, the first threeway, the second threeway and auxiliary piping;
The output of micro air pump connects the input of the first magnetic valve by auxiliary piping; The output of the first magnetic valve connects the first end of the second threeway, and the second end of the second threeway connects the first end of the first threeway; The second end of the first threeway connects the input of the second magnetic valve, and the output of the second magnetic valve connects atmosphere; The 3rd end of the second threeway connects an input of micro-pressure sensor; The 3rd end of the first threeway connects the air inlet pipe joint of surveying pipeline;
Cpu circuit connects respectively micro air pump, the first magnetic valve, the second magnetic valve measured in gas circuit by control circuit.
Further, described detection pipeline comprises sealing cap, screwed union, sound-pipe, air inlet pipe joint; Sound-pipe is hollow pipe, and the end of sound-pipe is provided with sealing cap, between sound-pipe, connects with screwed union, and head end is communicated with measurement gas circuit by air inlet pipe joint.
The utility model has the advantage of: the utility model is simple in structure, reasonable in design; To surveying, pipeline carries out principal fault detection to cpu circuit and regularly to surveying, pipeline stops up and principal fault detects in real time, its fault detect cycle is set by CPU, the existence of the second magnetic valve ensures sound-pipe inside and outside air pressure balance in the time that the fault detect cycle arrives, and micro air pump squeeze into after quantitative gas with survey pipeline when normal corresponding P0 compare and carry out fault judgement, ensured the accuracy of fault detect; Cpu circuit gathers, analyzes and processes through the signal of micro-pressure sensor and the transmission of signal sampling modulate circuit surveying pipeline in real time, and externally transmit by output circuit, realize and alarm, guaranteed to survey the reliability of pipeline work, its temperature rise rate, sensitivity can be set adjustment.
Brief description of the drawings
Fig. 1 is structure composition schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
What the utility model provided can Real-Time Monitoring pipeline fault air pipe-type line type heat fire detector (hereinafter referred detector), as shown in Figure 1, comprise: sealing cap 1, screwed union 2, sound-pipe 3, air inlet pipe joint 4, the second magnetic valve 5, with reference to gas circuit 6, micro-pressure sensor 7, signal sampling modulate circuit 8, cpu circuit 9, power-switching circuit 10, line joint 11, terminal row 12, control circuit 13, circuit board 14, output circuit 15, micro air pump 16, box body 17, auxiliary piping 18, the first magnetic valve 19, the second threeway 20, the first threeway 21,
This detector mainly comprises three parts, the detection pipeline outside box body 17, and measurement gas circuit and circuit board 14 in box body 17; Turnover connector lug 11 is arranged on box body 17 bottoms;
Described measurement gas circuit comprises: micro air pump 16, the first magnetic valve 19, the second magnetic valve 5, the first threeway 21, the second threeway 20 and auxiliary piping 18;
The output of micro air pump 16 connects the input of the first magnetic valve 19 by auxiliary piping 18; The output of the first magnetic valve 19 connects the first end of the second threeway 20, and the second end of the second threeway 20 connects the first end of the first threeway 21; The second end of the first threeway 21 connects the input of the second magnetic valve 5, and the output of the second magnetic valve 5 connects atmosphere; The 3rd end of the second threeway 20 connects an input of micro-pressure sensor 7; The 3rd end of the first threeway 21 connects the air inlet pipe joint 4 of surveying pipeline;
Circuit board 14 comprises: micro-pressure sensor 7, signal sampling modulate circuit 8, cpu circuit 9, control circuit 13, power-switching circuit 10, output circuit 15, terminal row 12; Survey pipeline and connect measurement gas circuit; Measure gas circuit and be connected with an input of micro-pressure sensor 7, another input of micro-pressure sensor 7 is connected with atmosphere by reference to gas circuit 6; The power supply of detector is received power-switching circuit 10 by 1 to No. 4 connecting terminals of terminal row 12, and power-switching circuit 10 is powered to signal sampling modulate circuit 8, cpu circuit 9, output circuit 15, control circuit 13 and micro-pressure sensor 7 after input voltage being converted to the voltage of different amplitude level. Cpu circuit 9 is connected with No. 13 to No. 18 terminals of terminal row 12 by control circuit 13, wherein, No. 13, No. 14 terminal is connected with power line a, the b of micro air pump 16 respectively, No. 15, No. 16 terminal is connected with power line c, the d of the second magnetic valve 5 respectively, and No. 17, No. 18 terminal is connected with power line e, the f of the first magnetic valve 19 respectively; Cpu circuit 9 is connected with No. 5 to No. 12 terminals of terminal row 12 by output circuit 15, and wherein, No. 5 to No. 9 terminal is relay output fire alarm or fault-signal terminal, and No. 10 to No. 12 terminals are RS232 serial communication lead-out terminal.
Survey pipeline and comprise sealing cap 1, screwed union 2, sound-pipe 3, air inlet pipe joint 4; Sound-pipe 3 is metal hollow pipe, the end of sound-pipe is provided with sealing cap 1, between sound-pipe 3, connect with screwed union 2, head end is communicated with the measurement gas circuit in box body 17 by air inlet pipe joint 4, an input of micro-pressure sensor 7 is connected with measurement gas circuit, and another input of micro-pressure sensor 7 is connected with atmosphere.
The output of micro-pressure sensor 7 connects signal sampling modulate circuit 8, passes to cpu circuit 9 after pressure signal being changed into the signal of telecommunication by signal sampling modulate circuit 8; The signal that cpu circuit 9 is sent here signal sampling modulate circuit 8 is sampled, analyzes and is processed, judge the residing duty of sound-pipe, and be connected warning, fault-signal and state parameter information are externally transmitted with No. 5 to No. 12 terminals of terminal row 12 by output circuit 15.
Operation principle of the present utility model is:
Before detector starts, all electricity consumption devices are in off position, when detector starts or when the fault detect moment arrives, cpu circuit 9 is by control circuit 13 and terminal row control the first magnetic valve 19 and the second magnetic valve 5 conductings, micro air pump 7 is closed, now measure gas circuit, surveying pipeline is communicated with atmosphere, when after pressure and atmospheric pressure balance in measurement gas circuit, the second magnetic valve 5 cuts out, cpu circuit 9 is switched on by control circuit 13 and lead-out terminal control micro air pump 16, micro air pump 16 is switched in rearward measurement gas circuit and is inflated, after squeezing into quantitative gas, close air pump 16 and the first magnetic valve 19, now measure gas circuit and atmosphere and have quantitative pressure reduction, measure air pressure corresponding to gas circuit and be P0(now air pressure P0 survey pipeline corresponding value when normal). in the time of variations in temperature, the air pressure of surveying in pipeline and measurement gas circuit can change.
In the time surveying pipeline somewhere and stop up, surveying internal volume in pipeline will be little when normal, and the air pressure that air pump is squeezed in measurement gas circuit corresponding after quantitative gas can be more much larger than P0; When surveying pipeline somewhere when gas leakage, the air pressure that air pump is squeezed in measurement gas circuit corresponding after quantitative gas can be little more a lot of than P0; Micro-pressure sensor 16 is transferred to cpu circuit 9 by the air pressure of measuring in gas circuit by signal sampling modulate circuit 8, the signal that cpu circuit 9 is sent here signal sampling modulate circuit 8 carries out periodic sampling, analyzes and processes, judge the residing duty of sound-pipe, and externally transmit by output circuit, control related device work by control circuit 13, its sampling period and fault detect cycle are set by single-chip microcomputer PIC16F73.
Cpu circuit 9 comprises single-chip microcomputer PIC16F73, sensitivity and mode selection switch circuit. After the repetitive processes such as the signal that signal sampling modulate circuit 8 transmits micro-pressure sensor 7 gathers, filtering, amplification, secondary filtering, amplification, deliver to cpu circuit 9, the signal that cpu circuit 9 is sent here signal sampling modulate circuit 8 carries out periodic sampling, analyzes and processes, judge the residing duty of sound-pipe, and externally transmit by output circuit.
Claims (3)
1. an air pipe-type line type heat fire detector that can Real-Time Monitoring pipeline fault, is characterized in that, comprising: survey pipeline, measure gas circuit and circuit board (14);
Described circuit board (14) comprising: micro-pressure sensor (7), signal sampling modulate circuit (8), cpu circuit (9), control circuit (13), power-switching circuit (10), output circuit (15), terminal row (12);
Survey pipeline and connect measurement gas circuit; Measure gas circuit and be connected with an input of micro-pressure sensor (7), another input of micro-pressure sensor (7) is connected with atmosphere by reference to gas circuit (6); The output of micro-pressure sensor (7) connects signal sampling modulate circuit (8), passes to cpu circuit (9) after pressure signal being converted into the signal of telecommunication by signal sampling modulate circuit (8); The signal that cpu circuit (9) is sent here signal sample circuit (8) is sampled, analyzes and is processed; Cpu circuit (9) is by output circuit (15) splicing ear row's (12) lead-out terminal;
Cpu circuit (9) is by the work of device in control circuit (13) control survey gas circuit; Power-switching circuit (10) is for giving signal sampling modulate circuit (8), cpu circuit (9), output circuit (15), control circuit (13) and micro-pressure sensor (7) power supply.
2. air pipe-type line type heat fire detector that can Real-Time Monitoring pipeline fault as claimed in claim 1, is characterized in that:
Described measurement gas circuit comprises: micro air pump (16), the first magnetic valve (19), the second magnetic valve (5), the first threeway (21), the second threeway (20) and auxiliary piping (18);
The output of micro air pump (16) connects the input of the first magnetic valve (19) by auxiliary piping (18); The output of the first magnetic valve (19) connects the first end of the second threeway (20), and the second end of the second threeway (20) connects the first end of the first threeway (21); The second end of the first threeway (21) connects the input of the second magnetic valve (5), and the output of the second magnetic valve (5) connects atmosphere; The 3rd end of the second threeway (20) connects an input of micro-pressure sensor (7); The 3rd end of the first threeway (21) connects the air inlet pipe joint (4) of surveying pipeline;
Cpu circuit (9) connects respectively micro air pump (16), the first magnetic valve (19), the second magnetic valve (5) measured in gas circuit by control circuit (13).
3. air pipe-type line type heat fire detector that can Real-Time Monitoring pipeline fault as claimed in claim 1, is characterized in that:
Survey pipeline and comprise sealing cap (1), screwed union (2), sound-pipe (3), air inlet pipe joint (4); Sound-pipe (3) is hollow pipe, and the end of sound-pipe is provided with sealing cap (1), between sound-pipe (3), connects with screwed union (2), and head end is communicated with measurement gas circuit by air inlet pipe joint (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521080790.5U CN205247554U (en) | 2015-12-21 | 2015-12-21 | Air tubular line type heat fire detector that can real -time supervision pipeline trouble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521080790.5U CN205247554U (en) | 2015-12-21 | 2015-12-21 | Air tubular line type heat fire detector that can real -time supervision pipeline trouble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205247554U true CN205247554U (en) | 2016-05-18 |
Family
ID=55946636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521080790.5U Active CN205247554U (en) | 2015-12-21 | 2015-12-21 | Air tubular line type heat fire detector that can real -time supervision pipeline trouble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205247554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177797A (en) * | 2017-12-28 | 2018-06-19 | 中航电测仪器股份有限公司 | A kind of aircraft high temperature conduit gas leak detection device and its detection method |
| JP2021152937A (en) * | 2017-03-08 | 2021-09-30 | ホーチキ株式会社 | Disaster prevention system |
-
2015
- 2015-12-21 CN CN201521080790.5U patent/CN205247554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021152937A (en) * | 2017-03-08 | 2021-09-30 | ホーチキ株式会社 | Disaster prevention system |
| CN108177797A (en) * | 2017-12-28 | 2018-06-19 | 中航电测仪器股份有限公司 | A kind of aircraft high temperature conduit gas leak detection device and its detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108332064B (en) | Natural gas monitoring management system | |
| CN105759786B (en) | Valve remote failure diagnosis system based on technology of Internet of things | |
| KR102079865B1 (en) | Apparatus for checking of gas insulated switchgear | |
| CN205639838U (en) | Pipeline valve gate and medium equipment of filler department thereof | |
| CN205402252U (en) | Public clothes gas metering leaks alarm control ware | |
| CN104715580A (en) | Self-calibrated type GIS indoor sulfur hexafluoride gas leakage monitoring and alarming system | |
| CN102778266B (en) | Water level redundancy measuring device | |
| CN112576942A (en) | Real-time monitoring system for hydrogen leakage | |
| CN205247554U (en) | Air tubular line type heat fire detector that can real -time supervision pipeline trouble | |
| CN106907523B (en) | Method for predicting valve leakage | |
| CN103528644A (en) | Large-scale oil level monitoring system for converter transformer | |
| CN205173995U (en) | Intelligence detector that leaks | |
| CN204164087U (en) | A kind of oil hydraulic cylinder attachable type monitoring diagnosis device | |
| CN213148251U (en) | Intelligent positioning device for water system pipeline fault | |
| CN203499975U (en) | Fault alarm system for pneumatic diaphragm pump | |
| CN103295359B (en) | Rescue beacon control circuit and corresponding rescue beacon | |
| CN209803615U (en) | leakage detection relay for submersible pump | |
| CN210003917U (en) | System for monitoring corner state of air-locking flap valve by using laser displacement sensor | |
| CN204534135U (en) | Mining gas pipeline explosion signal monitoring device | |
| CN208605940U (en) | Double-skin duct leak-checking apparatus | |
| CN203517330U (en) | Underground pipeline monitoring and alarming system | |
| CN202916647U (en) | Diode measurement steering magnet control system | |
| CN202350906U (en) | Combined rotating machinery monitoring protection system | |
| CN207600636U (en) | A kind of band back-up tong casing tong torquemeter | |
| CN206353065U (en) | A kind of gas insulation switch cabinet air chamber pressure state on_line monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |