CN202838588U - Dust test device of fire detector - Google Patents
Dust test device of fire detector Download PDFInfo
- Publication number
- CN202838588U CN202838588U CN 201220474193 CN201220474193U CN202838588U CN 202838588 U CN202838588 U CN 202838588U CN 201220474193 CN201220474193 CN 201220474193 CN 201220474193 U CN201220474193 U CN 201220474193U CN 202838588 U CN202838588 U CN 202838588U
- Authority
- CN
- China
- Prior art keywords
- test
- dust
- fire detector
- detector
- casing
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Fire Alarms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a dust test device of a fire detector, and the dust test device consists of a test box, a dust source and test parameter monitoring device. The test box is internally provided with a mounting rack for the detector, the bottom is provided with a nozzle connected with the dust source, and the test parameter monitoring device consists of a dust concentratometer, a hygrothermograph, an air gauge and insulating heating wires wound on the outer wall of the test box. The test device can be used to conduct a quantitative test on the influence of fire detector performance by long-term accumulation of dust and on the anti-dust short-time interference capability of the detector, and the anti-dust capability of the detector is judged according to the change of responsive threshold values before and after a fire detector test and whether alarm and fault signals are given, thereby providing a basis for applying, studying and improving the detector.
Description
Technical field
The utility model relates to the fire detector Performance Detection, particularly a kind of test unit for the anti-dust ability of test spot-type smoke detector.
Background technology
The dust that suspends in the air is a principal element that causes the spot-type smoke detector false alarm; Simultaneously, dust deposits in the detection cavity of fire detector for a long time, can cause the fire detector working point to drift about.The drift of working point then might be failed to report alert or frequent false alarm.Therefore.Fire detector is carried out dust test, and check fire detector anti-dust ability is to using and to improve fire detector significant.
GB/T2423.37-2006/IEC60068-2-68:1994 " electric and electronic product environmental test " has stipulated different " sand and dust test " methods to electric and electronic product, the main sand and dust of estimating are on the generality impact of electric and electronic product, such as sand and dust cause that contact fault, motion bearings are stuck, the obstruction of surface abrasion and air vent or filtrator etc.These test methods because wrong report or operating point drift that the dust interference causes are inappropriate, therefore never adopt these test methods that fire detector is tested in the fire detecting and alarm field for the test fire detector.
U.S. UL standard UL268 " Smoke detectors for fire alarm signaling system " (smoke fire detector) has proposed a kind of fire detector dust test method, its objective is by test, whether the sensitivity of confirming fire detector is subjected to the cumulative effect of dust and excessive attenuation.This test method is at 0.09m
3Chamber in, use the 60g cement dust, realize airborne dust by pressurized air, the fire detector after the outage is exposed in the dust 15 minutes, then from chamber, take out, grey cigarette and black smoke sensitivity test are carried out in energising.This test is to carry out under the fire detector powering-off state, can't estimate fire detector to the inhibition ability of dust wrong report; In addition, fire detector taken out from chamber test, can cause distribution and the accumulation situation of dust in detection cavity to change, test findings can not reflect truly that dust is to the influence degree of fire detector.
The utility model content
Problem for above-mentioned prior art existence, the purpose of this utility model provides a kind of fire detector dust test device that can measure the anti-dust ability of spot-type smoke detector, utilize this device to carry out anti-dust ability test to fire detector, thereby provide scientific basis for the correct anti-dust ability of estimating fire detector.
For achieving the above object, the fire detector dust test device that the utility model provides comprises test casing, dust source and test parameters supervising device; In the described test casing fire detector erecting frame is arranged, this erecting frame is fixedly connected with by the loam cake of skirt with the test casing; Nozzle is arranged at the bottom of test casing, and this nozzle is connected with dust source by draft tube; Described test parameters supervising device comprises dust concentration meter, Hygrothermograph, rain glass and heating wire, and wherein dust concentration meter, Hygrothermograph and rain glass join by flange and test casing respectively; Heating wire is wrapped on the outer wall of test casing by insulating sheath.
The fire detector performance is affected mainly in two kinds of situation by dust: a kind of is the place (such as hotel guest-room, office, laboratory, storage chamber etc.) that fire detector is used to not have special airborne dust process, under this environmental baseline, mainly being the low-density floating dust impacts the performance of fire detector by diffusion, Electrostatic Absorption long-term accumulated in the optical detection chamber.Another kind is that Space, Place is opened wide or partly opened wide to the fire detector entrance hall that is used for general industry and covil construction, corridor, workshop, ancient building etc., by open physical environment (as windowing) or artificial disturbance (air circulation that causes such as cleaning, air-conditioning etc.) fire detector is caused the dust short time and disturbs.
Utilize above-mentioned fire detector dust test device, the utility model affected by the dust long-term accumulated for the fire detector performance and anti-dust short time interference performance provides respectively following test method.
The fire detector performance is subjected to the dust long-term accumulated to affect test method, may further comprise the steps:
(1) set test condition: comprise according to fire detector practical service environment air-borne dust situation, by inquiry with statistics confirmed test casing in dust concentration around the fire detector; Airborne dust forms and particle diameter distributes take A2 dirt as main; Keep test casing inner suspension dirt even; Temperature is normal laboratory temperature; Relative humidity≤25%; Overcome electrostatic accumulation by ground connection; Harsh degree according to test requires and dust concentration setting duration of test runs;
(2) fire detector is carried out initial measurement before the dust test: get two fire detector samples, be set to maximum sensitivity with one, another is set to sensitivity minimization, measures respectively its response lag, and notes down;
(3) above-mentioned two fire detectors through initial measurement are installed on the fire detector erecting frame in the test casing of the utility model fire detector dust test device, energising stable operation begins to carry out dust test after two hours: to the heating wire energising, make the interior temperature of test casing and relative humidity reach Test Condition Requirements; Regulate the compressed-air actuated pressure of dust-laden and flow, dust is evenly injected in the test casing from the nozzle of test bottom half continuously, it is basically identical that test casing internal gas pressure and external pressure keep, monitor dust concentration value in the current test casing by dust concentration meter, and by artificial closed-loop control, make dust concentration keep stable by the Test Condition Requirements value; Duration to be tested stops dust when reaching the test condition setting value injects, and keeps test casing closed condition, makes dust free setting 4 hours;
(4) fire detector through above-mentioned dust test is measured: adopt the in situ quantitation checkout equipment in the response lag of chamber in-vivo measurement fire detector; Time and the number of times of wrong report occurs in record;
(5) calculate respectively before two fire detector tests and the response lag ratio after the test, two threshold ratios all be not more than 1.6 and process of the test in two fire detectors all do not send alerting signal and fault-signal, judge that then this fire detector its performance under test condition is subjected to the dust long-term accumulated to affect stand the test.
Interference performance test method of anti-dust short time of fire detector may further comprise the steps:
(1) sets test condition: according to fire detector practical service environment air-borne dust situation, determine dust intermittently injection mode and the concentration of injecting dust with statistics by inquiry; Airborne dust forms and particle diameter distributes take A2 dirt as main; Dust concentration is carried out continuous detecting and control; Temperature is normal laboratory temperature; Relative humidity≤25%; Overcome electrostatic accumulation by ground connection; Harsh degree according to test requires and dust concentration setting duration of test runs;
(2) fire detector is carried out initial measurement before the dust test: get two fire detector samples, be set to maximum sensitivity with one, another is set to sensitivity minimization, measures respectively its response lag, and notes down;
(3) above-mentioned two fire detector samples through initial measurement are installed on the fire detector erecting frame in the test casing of the utility model fire detector dust test device, energising stable operation begins to carry out dust test after two hours: to the heating wire energising, make the interior temperature of test casing and relative humidity reach Test Condition Requirements; Regulate the compressed-air actuated pressure of dust-laden and flow, make concentration that dust sets by test condition and intermittently injection mode from the nozzle of test bottom half, in the test casing, inject, test casing internal gas pressure and external pressure are basically identical, by dust concentration meter dust concentration is carried out continuous monitoring, and by artificial closed-loop control, make dust concentration be stabilized in the test condition setting value; Duration to be tested stops dust when reaching the test condition setting value injects, and keeps test casing closed condition, makes dust free setting 4 hours;
(4) time and the number of times of the warning of record fire detector and newspaper fault, fire detector is in process of the test as do not send warning, expendable fault-signal does not occur yet, and then judges this fire detector sensitivity anti-dust short time interference performance stand the test under test condition.
The beneficial effects of the utility model:
Utilize the utility model test unit to be subjected to dust cumulative effect and anti-dust short time interference performance to carry out quantitative test to the spot-type smoke detector performance, thereby for the correct anti-dust ability of fire detector of estimating provides reliable basis, solve both at home and abroad the anti-in short-term dust of spot-type smoke detector is disturbed at present and long-term dust cumulative effect without the technical matters of correct evaluation method, for application, research and development and the improvement in performance of fire detector creates favorable conditions.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is structure and the use principle block diagram of the utility model fire disaster detector test device;
Fig. 2 is the structural representation of chamber body among Fig. 1.
Among the figure: the 1-loam cake, 2-tests casing, 3-skirt.4-fire detector erecting frame, 5-view window, 6-dust concentration meter joint flange, 7-nozzle.The 8-travelling wheel, 9-draft tube, 10-Hygrothermograph joint flange, 11-rain glass joint flange.
Embodiment
As shown in Figure 1, the utility model fire detector dust test device is comprised of dust source and test parameters supervising device three parts of testing casing, be connected with the test casing, during use tested fire detector is placed in the test casing.As shown in Figure 2, test casing 2 is cylindrical, diameter 100mm, high 150mm, made by the 2mm steel plate, the skirt 3(that welds an internal diameter 10mm, long 50mm at the center of loam cake 1 of test casing can adopt steel pipe), be used for power lead and the signal wire of tested fire detector are drawn from testing in the casing, join with control and the display device of fire detector; The lower end welding disc fire detector erecting frame 4 of skirt 3, during test, tested fire detector can be installed on this erecting frame by bolt; Tank wall at the test casing of corresponding fire detector erecting frame is offered a square view window 5 that is made of transparent organic glass, tested fire detector ruuning situation and dust state in the viewing test casing when testing; Toroidal is upwards made in test casing 2 bottoms, and its center arranges nozzle 7, and nozzle joins with dust source by the draft tube 9 that is made of Φ 8mm copper pipe; The test parameters supervising device comprises dust concentration meter, Hygrothermograph, rain glass and heating wire (not shown), and wherein dust concentration meter, Hygrothermograph and rain glass adopt the DN50 flange by the dust concentration meter joint flange 6(that is installed on the test casing tank wall respectively), Hygrothermograph joint flange 10(diameter of phi 10mm) and rain glass joint flange 11(diameter of phi 10mm) with test casing and join; Heating wire is wrapped on the outer wall of test casing by insulating sheath, and is fixed; Four travelling wheels 8 of the symmetrical installation of test tank floor are in order to the nigration casing.
Embodiment 1
Utilize the utility model fire disaster detector test device, according to above-mentioned test method, affected according to the following steps by the dust long-term accumulated on certain the model spot-type smoke detector performance that is used for certain hotel guest-room and test:
(1) sets test condition: be 0.3mg/m according to investigation and statistics confirmed test dust concentration to this hotel guest-room dust condition
3The test dust source adopts rotary micro dust generator (open by the ZL200620093887.4 patent) to form, and the floating dust particle diameter distributes take A2 dirt as main; Test casing inner suspension dirt will keep even; 25 ℃ of temperature; Relative humidity 25%; Overcome electrostatic accumulation by ground connection; Duration of test runs is 3 days;
(2) fire detector is carried out initial measurement before the dust test: get two in test model fire detector sample, one of them sensitivity is set to mxm., another sensitivity is set to minimum, measures its response lag and is respectively 0.31 and 0.52, with its record;
(3) above-mentioned two fire detector samples through initial measurement are installed on the fire detector erecting frame in the utility model test unit test casing with bolt, energising stable operation begins to carry out dust test after two hours: to the heating wire energising, temperature is between 25 ~ 35 ℃ in the adjusting test casing; Relative humidity 25%; Regulate the compressed-air actuated pressure of dust-laden and flow, dust is evenly injected in chamber from the nozzle of test bottom half, chamber internal gas pressure and external pressure are basically identical, monitor at any time dust concentration value in the test casing by dust concentration meter, by artificial closed-loop control, make dust concentration at 0.3mg/m
3Keep stable under the condition, stop dust after duration of test runs reaches 3 days and inject, keep the chamber closed condition, made dust free setting 4 hours;
(4) fire detector through above-mentioned dust test is carried out threshold test: the response lag of utilizing Britain NoClimb company's T ureTest spot-type smoke detector threshold to detect two fire detectors is respectively 0.23 and 0.42, it is compared with initial response threshold value 0.31 and 0.52 respectively, response lag is respectively 1.35 and 1.24 than (initial threshold and the rear threshold ratio of test), all less than testing requirements value 1.6; And two fire detectors do not send alerting signal and fault-signal in the process of the test.Judge that thus this model spot-type smoke detector performance is subjected to the dust long-term accumulated to affect stand the test.
Utilize the utility model fire disaster detector test device, according to above-mentioned test method, certain the model spot-type smoke detector anti-dust short time interference performance that is used for certain lobby, hotel carried out dust test according to the following steps:
(1) set test condition: adopt intermittently injection mode of dust, according to investigation and the statistics to like environment air-borne dust situation, setting the 30 minutes implantation concentrations of whenever being separated by is 0.5mg/m
330 seconds of test dust; The composition of dust and particle diameter distribute identical with embodiment 1; Temperature is 25 ~ 35 ℃ in the test casing; Relative humidity is not more than 25%; Overcome electrostatic accumulation by ground connection; Duration of test runs is 2 hours;
(2) fire detector is carried out initial measurement before the dust test: get two in test model fire detector sample, one of them is set to maximum sensitivity, and another is set to sensitivity minimization, records its response lag and is respectively 0.27 and 0.51; And note down;
(3) above-mentioned two fire detector samples through initial measurement are installed on the fire detector erecting frame in the utility model test unit test casing, energising stable operation begins to carry out dust test after two hours: switch on to heating wire, make the interior temperature of test casing reach 25 ~ 35 ℃, relative humidity is not more than 25%, and spraying into concentration by solenoid control dust-laden pressurized air in clockwise chamber in 30 minutes from the nozzle of test bottom half is 0.5mg/m
3Dust-contained airflow, 30 seconds time, spray into the concentration value of dust in the test casing by the dust concentration meter continuous detecting; Chamber internal gas pressure and external pressure are consistent, and stop dust after continuous 5 circulations and inject, and keep chamber to close, and make dust free setting 4 hours;
(4) the high sensitivity fire detector sends alerting signal, the normal operation of muting sensitivity fire detector, two fire detectors are not all reported fault, judge that thus the anti-dust of the high sensitivity short time interference performance test under test condition of this model fire detector is defective; Interference performance stand the test of anti-dust short time of muting sensitivity.
Claims (1)
1. a fire detector dust test device comprises test casing (2), dust source and test parameters supervising device; It is characterized in that: fire detector erecting frame (4) is arranged in the described test casing (2), and this erecting frame is fixedly connected with by the loam cake (1) of skirt (3) with the test casing; Nozzle (7) is arranged at the bottom of test casing, and this nozzle is connected with dust source by draft tube (9); Described test parameters supervising device comprises dust concentration meter, Hygrothermograph, rain glass and heating wire, and wherein dust concentration meter, Hygrothermograph and rain glass join by flange (6,10,11) and test casing respectively; Heating wire is wrapped on the outer wall of test casing by insulating sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220474193 CN202838588U (en) | 2012-09-17 | 2012-09-17 | Dust test device of fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220474193 CN202838588U (en) | 2012-09-17 | 2012-09-17 | Dust test device of fire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202838588U true CN202838588U (en) | 2013-03-27 |
Family
ID=47950236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220474193 Withdrawn - After Issue CN202838588U (en) | 2012-09-17 | 2012-09-17 | Dust test device of fire detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202838588U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881108A (en) * | 2012-09-17 | 2013-01-16 | 公安部沈阳消防研究所 | Dust test device and test method for fire detector |
| CN107715362A (en) * | 2017-09-08 | 2018-02-23 | 深圳市智物联网络有限公司 | Fire fighting monitoring method, apparatus and system based on Internet of Things |
| CN112577867A (en) * | 2020-12-08 | 2021-03-30 | 广西电网有限责任公司电力科学研究院 | Method and device for detecting suspended particles in gas chamber of GIS (gas insulated switchgear) |
| CN112577882A (en) * | 2020-12-07 | 2021-03-30 | 广西电网有限责任公司电力科学研究院 | Method and device for detecting metal particles in GIS disconnecting link air chamber |
-
2012
- 2012-09-17 CN CN 201220474193 patent/CN202838588U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881108A (en) * | 2012-09-17 | 2013-01-16 | 公安部沈阳消防研究所 | Dust test device and test method for fire detector |
| CN102881108B (en) * | 2012-09-17 | 2014-05-07 | 公安部沈阳消防研究所 | Dust test device and test method for fire detector |
| CN107715362A (en) * | 2017-09-08 | 2018-02-23 | 深圳市智物联网络有限公司 | Fire fighting monitoring method, apparatus and system based on Internet of Things |
| CN112577882A (en) * | 2020-12-07 | 2021-03-30 | 广西电网有限责任公司电力科学研究院 | Method and device for detecting metal particles in GIS disconnecting link air chamber |
| CN112577867A (en) * | 2020-12-08 | 2021-03-30 | 广西电网有限责任公司电力科学研究院 | Method and device for detecting suspended particles in gas chamber of GIS (gas insulated switchgear) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102881108B (en) | Dust test device and test method for fire detector | |
| CN205785299U (en) | A kind of piping lane condition monitoring system | |
| CN202838588U (en) | Dust test device of fire detector | |
| CN106838627B (en) | A kind of multisensor heat supply network leakage warning monitoring system | |
| CN105629139A (en) | Gas insulated electrical equipment partial discharge multi-source combined monitoring experiment device | |
| TW201432279A (en) | Method of utilizing vocal features for determining malfunctions of electrical equipment caused by arc discharge, mechanical vibration and abnormal displacement | |
| CN101576593B (en) | Array type inferior insulator local electric field detector and inverse diagnosis method | |
| CN105758904A (en) | Multi-parameter water quality monitoring system and method and their application | |
| CN109211390B (en) | Safety test and evaluation method for vibration and strength of power transmission tower | |
| CN111505468B (en) | Optical fiber distributed partial discharge detection system | |
| CN112034034A (en) | Veneering type steel bar non-uniform corrosion monitoring sensor based on magnetic field principle and testing method | |
| CN202177600U (en) | On-line monitoring device of dust content | |
| CN104849639A (en) | System for online monitoring of partial discharge flashover of distribution network based on technology of ultraviolet light detection | |
| CN106323830A (en) | High-humidity flue gas dust monitoring system and method thereof | |
| CN101865817B (en) | Sensor and detection method for detecting corrosion of buried metal | |
| AU2021221640B2 (en) | A metal surface corrosion monitoring device with temperature compensation based on fiber grating | |
| CN105880502A (en) | Device and method for detecting working state of nozzles in continuous-casting secondary cooling area in real time | |
| CN104931541A (en) | Long-term performance monitoring method for GFRP (glass fiber reinforcement polymer) bars in concrete | |
| CN106770481B (en) | Bridge sling monitoring sensor | |
| CN106770679A (en) | Fibre reinforced plastics pressure vessel detection method based on acoustic emission testing technology | |
| CN106251557A (en) | A kind of multiparameter temperature measuring type electrical fire monitoring system | |
| CN213517304U (en) | Monitoring device for potential change of town gas pipeline | |
| CN205942981U (en) | Multi -parameter temperature measurement formula alarm and control system for electric fire prevention | |
| CN202501198U (en) | Sensor assembly used for monitoring leakage of natural gas transmission pipeline | |
| KR100380179B1 (en) | Outside Leakage Detection System for Landfill Liner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20140507 |
|
| RGAV | Abandon patent right to avoid regrant |