CN110221149A - Poor contact ignition source prevention and control device fire prevention and control aptitude tests device and method - Google Patents
Poor contact ignition source prevention and control device fire prevention and control aptitude tests device and method Download PDFInfo
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- CN110221149A CN110221149A CN201910535716.4A CN201910535716A CN110221149A CN 110221149 A CN110221149 A CN 110221149A CN 201910535716 A CN201910535716 A CN 201910535716A CN 110221149 A CN110221149 A CN 110221149A
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- carbon
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses poor contact ignition source prevention and control device fire prevention and control aptitude tests device and method, ignite source generating device including the test object being arranged in series on firewire and poor contact；Test object is parallel with switch T；Poor contact source generating device of igniting includes pedestal, be provided on pedestal can opposite sliding copper rod and carbon-point；Copper rod and carbon-point opposite end are planar structure, and the other end is connected to firewire；Carbon-point and copper rod opposite end are dots structure, and the other end connects firewire；Test object and poor contact ignite and are connected with current sensor between source generating device；Poor contact source generating device of igniting has been arranged in parallel voltage sensor；Current sensor and voltage sensor are all connected to oscillograph；Copper rod and carbon-point contact jaw are provided with combustibles；It further include the load device for adjusting size of current；The present invention may be guided and the research and development of the corresponding poor contact ignition source prevention and control device product of specification, improves the prevention and control ability of Related product, promotes the field to develop, reduces the generation of electrical fire.
Description
Technical field
The present invention relates to fire prevention and control aptitude tests methods, and in particular to a kind of poor contact ignition source prevention and control device fire
Prevention and control aptitude tests device and method.
Background technique
China's electrical fire accounts for about sum occurs for fire 30% or so every year, since fire quantity is integrally in increase year by year
Trend, bring grave danger to the property safety of social stability and the people.In electrical fire, poor contact ignition source is to produce
The one of the major reasons of raw electrical fire, the protective devices such as existing short circuit, electric leakage, overload can not have such ignition source
Imitate prevention and control.With deepening continuously both at home and abroad to poor contact electric discharge ignition source research, occurs several classes in succession and be directed to contact not
The prevention and control device of good electric discharge ignition source.Such as external AFCI, and domestic AFDD, also there is corresponding examination criteria.This
In a little standards, the detection majority for this kind of product be from electric property in terms of, it is seldom to the prevention and control aspect of performance of fire, and inspection
Survey method is very single, goes to consider from qualitative angle, no quantization index.This causes in actual application, relevant product
It cannot can be applied well in the market by examining during the experiment, fire control effect is poor, malfunction rate
It is high.
Summary of the invention
The present invention provides a kind of poor contact ignition source prevention and control device fire prevention and control ability survey in view of the shortcomings of the prior art
Try device and method.
The technical solution adopted by the present invention is that: a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests dress
It sets, ignites source generating device including the test object being arranged in series on firewire and poor contact；Test object is parallel with switch
T；Poor contact source generating device of igniting includes pedestal, be provided on pedestal can opposite sliding copper rod and carbon-point；Copper rod and carbon
Stick opposite end is planar structure, and the other end is connected to firewire；Carbon-point and copper rod opposite end are dots structure, other end connection fire
Line；Test object and poor contact ignite and are connected with current sensor between source generating device；Poor contact ignition source generates dress
It sets and has been arranged in parallel voltage sensor；Current sensor and voltage sensor are all connected to oscillograph；Copper rod and carbon-point contact jaw
It is provided with combustibles；It further include the load device for adjusting size of current.
It further, further include power supply indicator L1.
Further, it is additionally provided with the indicator light L2 in parallel with load device.
Further, the combustibles are cotton, are wrapped in copper rod and carbon-point contact jaw.
Further, the copper rod is fixed on pedestal；Stepper motor is provided on pedestal, carbon-point passes through stepping electricity
Machine drives it to slide along pedestal.
A kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests method, comprising the following steps:
Step 1: test object being accessed into circuit, closure switch S, switch T, switch K2 disconnect K1, adjust copper rod and carbon-point
Contact checks circuit conditions；
Step 2: carrying out persistence drag arc disjunction test；
S31: to contact condition, closure switch S, switch T, switch K1 disconnect switch K2 for setting copper rod and carbon-point；It adjusts negative
Carrying to set makes it meet load parameter requirement；
S32: copper rod and carbon-point are gradually disengaged, and are adjusted spacing between copper rod and carbon-point and are formed persistence drag arc, when arcing continues
Between no less than T s；
S33: will be in combustibles setting to copper rod and carbon-point；
S34: access test sample connects circuit, recording voltage current waveform；
S35: if test object effective action, combustibles are not ignited, and terminate electric arc to movement since generating electric arc
ENERGY E1No more than given threshold e1Then this passes through, and readjusts load parameter and repeats step S31~S35；Otherwise it exits；
Step 4: carrying out disposable arcing disjunction test；
S41: to contact condition, closure switch S, switch T, switch K1 disconnect switch K2 for adjustment copper rod and carbon-point；It adjusts negative
Carrying to set makes it meet load parameter requirement；
S42: will be in combustibles setting to copper rod and carbon-point；
S43: access test sample, closure switch K1, switch S, switch T disconnect K2, recording voltage current waveform；
S44: if test object effective action, combustibles are not ignited, and terminate electric arc to movement since generating electric arc
ENERGY E 2 is not more than given threshold e2, then passes through, and readjusts load parameter and repeats step S41~S44；Otherwise it exits.
Further, the step 3 is E from generating electric arc to terminate arc energy to movement1, E1And e1Determine that method is as follows:
E1=P1×t1
e1=n × w1×T
P1=UI
In formula: t1For the time terminated since generating electric arc to movement, P1For arc power, n is constant, w1For constant,
Voltage sensor observation when U is test, current sensor observation when I is test.
Further, the step 4 is E from generating electric arc to terminate arc energy to movement2Determine that method is as follows:
E2=P2×t2
P2=UI
In formula: t2For the time terminated since generating electric arc to movement, P2For arc power, voltage sensor when U is test
Device observation, current sensor observation when I is test.
The beneficial effects of the present invention are:
(1) present invention compensates for the domestic fire prevention and control aptitude tests method for being directed to poor contact ignition source prevention and control device；
(2) present invention may be guided and the research and development of the corresponding poor contact ignition source prevention and control device product of specification, raising correlation produce
The prevention and control ability of product promotes the field to develop, reduces the generation of electrical fire.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
In figure: 1- test object, 2- current sensor, 3- pedestal, 4- copper rod, 5- carbon-point, 6- voltage sensor, 7- oscillography
Device, 8- load device.
Specific embodiment
The present invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests device, including be arranged in series
Test object 1 and poor contact on firewire are ignited source generating device；Test object 1 is parallel with switch T；Poor contact is ignited
Source generating device includes pedestal 3, and the copper rod 4 and carbon-point 5 that can be slided relatively are provided on pedestal 3, and copper rod 4 is fixed at pedestal
On 3；Stepper motor is provided on pedestal 3, carbon-point 5 drives it to slide along pedestal 3 by stepper motor；Copper rod 4 and carbon-point 5 are opposite
End is planar structure, and the other end is connected to firewire；Carbon-point 5 and 4 opposite end of copper rod are dots structure, and the other end connects firewire；It surveys
Examination object 1 and poor contact ignite and are connected with current sensor 2 between source generating device；Poor contact ignites source generating device simultaneously
Connection is provided with voltage sensor 7；Current sensor 2 and voltage sensor 6 are all connected to oscillograph 7；Copper rod 5 and carbon-point 4 contact
End is provided with combustibles；It further include the load device 8 for adjusting size of current.It further include power supply indicator L1.It also sets up
There is the indicator light L2 in parallel with load device 8.Combustibles are cotton, are wrapped in 5 contact jaw of copper rod 4 and carbon-point.
By poor contact ignite source generating device generate ignition source, poor contact discharge fault point be (test object 1)
It is arranged on firewire；It is generated by the relative motion between copper rod 4 and carbon-point 5 and contacts good electric discharge, keep copper rod 4 or carbon-point 5 quiet
Only, the other end runs to a certain distance and keeps according to fixed speed, speed reference range 0.1mm/s~0.5mm/s；Copper
The preferred red copper of stick 4, copper rod 4 and 5 diameter of carbon-point select 8~10mm, using point face formula contact between copper rod 4 and carbon-point 5.
Occurred using voltage sensor 7 and the acquisition of current sensor 2 to the whole process terminated, current sensor 2 can
Loop current where acquiring fault point；Voltage sensor 7 can acquire fault point both end voltage；Tool can be used in voltage sensor 7
There is the differential voltage of high cmrr to pop one's head in.The data of acquisition can completely reflect short-circuit process, it is proposed that sample frequency is not less than
5000S/S, the acquisition equipment being connected with sensor should have data recording function.
Combustibles select cotton, and using dry cotton, cotton gently wraps up the mode of contact point, cotton take a little, with
Just covering a Zhou Weiyi of 10mm wide, it is too tight that when package, is not easy winding, can not be too far from pole stick, with most staple bases pole
Stick is advisable, and cotton should be drying regime.
A kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests method, comprising the following steps:
Start to first check for power supply, power supply line, test circuit and each component plug connector connection status before test,
Ensure good connection.
Step 1: test object 1 being accessed into circuit, closure switch S, switch T, switch K2 disconnect K1, adjust copper rod 4 and carbon
Stick 5 contacts, and checks circuit conditions；
It according to access test object 1 shown in Fig. 1 and checks circuit connection situation, keeps switch S, K1 and K2 to disconnect, switch T
It is closed, the motor on adjustment base 3 comes into full contact with copper rod 4 and carbon-point 5.
Closure switch S, closure switch K2 access bulb load, and wherein light bulb L2 is 60W~100W, check on oscillograph 7
Whether the voltage and current signal phase of display matches, and whether signal integrity is good.If phase matched, signal are well and without other
It is abnormal, then it is transferred to step 2, otherwise readjusts circuit.
Step 3: carrying out persistence drag arc disjunction test；
S31: adjustment copper rod 4 and carbon-point 5 to contact condition (adjust, operation speed by adjusting the motor speed of service on pedestal 3
Degree is 0.1mm/s~0.5mm/s)；Closure switch S, switch T, switch K1 disconnect switch K2；Adjusting load device (8) keeps it full
Sufficient load parameter requirement；Setting X is 1.1, P firstfIt is 0.85；
Payload size is set according to the loadtype that measurand 1 is directed to, is not connect after so that it is met load access circuit
X times (X=0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0) of electric current when such as loading；Load is by perception and holds
Property combination, perceptual resistance value (circuit validity) accounts for 80% or more of total resistance value；Power-factor of load PfMeet 1 function of test object
Maximum value, median and minimum value requirement within the scope of rate factor.If test object reactive factor requires, inductive load is taken
Power factor value takes 0.85,0.92,0.99 3 gears.
S32: starting motor is gradually disengaged copper rod 4 and carbon-point 5, adjusts spacing between copper rod 4 and carbon-point 5 and forms lasting drawing
Arc, arcing duration are no less than T s；Wherein (4s=< Ts≤6s)；
S33: will be in combustibles setting to copper rod 4 and carbon-point 5；
S34: closure switch K1, switch T, switch K2 are disconnected；Then closure T access test sample (1), closure switch S connect
Circuit passband, recording voltage current waveform；
S35: it is considered as once-through if meeting following condition when test:
Test object (1) effective action acts combustibles in complete process and is not ignited, and to dynamic since generating electric arc
Make to terminate arc energy E1No more than given threshold e1Then this passes through；
It readjusts load parameter and repeats step S31~S35；Otherwise it exits；It is considered as if all equal once-throughs of test
Once-through is tested in persistence drag arc disjunction, is not otherwise passed through；Change an X and PfValue, corresponding primary test, all tests are logical
It has crossed and has been considered as persistence drag arc disjunction test once-through.
Test terminates to disconnect switch S every time, keeps copper rod 4 and carbon-point 5 at least two minutes cooling, then wipes, clears up or beat
Carbon-point 5 and copper rod 4 are ground, its clean, smooth, impulse- free robustness is kept.Each group of load parameter 5 groups of data of corresponding test, all loads
Parameter enters step the disposable arcing disjunction test of 4 carry out after being all completed.
Step 4: carrying out disposable arcing disjunction test；
S41: to contact condition, closure switch S, switch T, switch K1 disconnect switch K2 for adjustment copper rod 4 and carbon-point 5；It adjusts
Load device 8 makes it meet load parameter requirement；；
Adjustment copper rod 4 and carbon-point 5 are moved to contact condition by adjusting stepper motor；Speed of related movement is 0.1mm/s
~0.5mm/s.Payload size is set according to the loadtype that measurand 1 is directed to, for not after making it meet load access circuit
Connect X times (X=0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0) of electric current when such as load；Load by perception and
Capacitive combination, perceptual resistance value (circuit validity) account for 80% or more of total resistance value；Power-factor of load PfMeet test object 1
Maximum value, median and minimum value requirement within the scope of power factor.If test object reactive factor requires, take perception negative
It carries power factor value and takes 0.85,0.92,0.99 3 gears.
One group of X and Pf value of test test every time.
S42: will be in combustibles setting to copper rod 4 and carbon-point 5；
S43: access test sample 1, closure switch K1, switch S, switch T disconnect K2, recording voltage current waveform；
S44: meet following condition when test every time and be then considered as once-through:
1 effective action of test object, combustibles are not ignited, and terminate arc energy E to movement since generating electric arc2
No more than given threshold e2, then pass through.
It readjusts load parameter and repeats step S41~S44；Otherwise it exits.It is considered as if all equal once-throughs of test
Once-through is tested in disposable arcing disjunction, is not otherwise passed through；Change an X and PfValue, corresponding primary test, all tests are equal
Pass through and has been considered as disposable arcing disjunction test once-through.
Disconnect switch S after the completion of test every time, keep copper rod 4 and carbon-point 5 at least two minutes cooling, then wiping, cleaning or
Polishing carbon-point 5 and copper rod 4 keep its clean, smooth, impulse- free robustness.Each group of load parameter 5 groups of data of corresponding test.
Step 3 is E from generating electric arc to terminate arc energy to movement1, E1And e1Determine that method is as follows:
E1=P1×t1
e1=n × w1×T
P1=UI
In formula: t1For the time terminated since generating electric arc to movement, calculating from waveform diagram can be obtained t1Value, P1
For arc power, n is constant (1.1≤n≤1.3), w1For constant (46w≤w1≤ 48w), voltage sensor 6 is seen when U is test
Measured value, 2 observation of current sensor when I is test.
P1It being calculated by the voltage U and electric current I that are measured on oscillograph, it is an one-dimensional matrix that U and I, which are observation ordered series of numbers,
U=[U1,U2,…,UN], I=[I1,I2,…,IN], i.e., terminate to share N number of voltage and N number of electricity to movement since generating electric arc
Current test data.5 groups of statistical averages are taken to calculate in this example.
Step 4 is E from generating electric arc to terminate arc energy to movement2Determine that method is as follows:
E2=P2×t2
P2=UI
In formula: t2For the time terminated since generating electric arc to movement, calculating from waveform diagram can be obtained t2Value, P2
For arc power, 6 observation of voltage sensor when U is test, 2 observation of current sensor when I is test.e2Take 43.6.
P2It being calculated by the voltage U and electric current I that are measured on oscillograph, it is an one-dimensional matrix that U and I, which are observation ordered series of numbers,
U=[U1,U2,…,UN], I=[I1,I2,…,IN], i.e., terminate to share N number of voltage and N number of electricity to movement since generating electric arc
Current test data.5 groups of statistical averages are taken to calculate in this example.
The prevention and control device product that the present invention causes fire for existing poor contact electric discharge ignition source is immature, without corresponding inspection
The problem of survey method detects the fire prevention and control ability of such product；Propose a kind of poor contact ignition source prevention and control device
And detection method, compensate for domestic blank, and be able to guide and specification corresponding product research and development improve Related product prevention and control ability,
Promote the field to develop, reduces the generation of electrical fire.
Claims (8)
1. a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests device, which is characterized in that including being arranged in series
Test object (1) and poor contact on firewire are ignited source generating device；Test object (1) is parallel with switch T；Poor contact
Source generating device of igniting includes pedestal (3), and being provided on pedestal (3) can the opposite copper rod (4) and carbon-point (5) slided；Copper rod (4)
It is planar structure with carbon-point (5) opposite end, the other end is connected to firewire；Carbon-point (5) and copper rod (4) opposite end are dots structure,
The other end connects firewire；Test object (1) and poor contact ignite and are connected with current sensor (2) between source generating device；It connects
It touches bad source generating device of igniting and has been arranged in parallel voltage sensor (7)；Current sensor (2) and voltage sensor (6) connect
It is connected to oscillograph (7)；Copper rod (5) and carbon-point (4) contact jaw are provided with combustibles；It further include for adjusting the negative of size of current
It carries and sets (8).
2. a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests device according to claim 1, special
Sign is, further includes power supply indicator L1.
3. a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests device according to claim 1, special
Sign is, is additionally provided with the indicator light L2 in parallel with load device (8).
4. a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests device according to claim 1, special
Sign is that the combustibles are cotton, is wrapped in copper rod (4) and carbon-point (5) contact jaw.
5. a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests device according to claim 1, special
Sign is that the copper rod (4) is fixed on pedestal (3)；Stepper motor is provided on pedestal (3), carbon-point (5) passes through stepping
Motor drives it to slide along pedestal (3).
6. a kind of poor contact ignition source prevention and control device fire prevention and control according to claim 1 as claimed in claim 3
Aptitude tests method, which comprises the following steps:
Step 1: test object (1) being accessed into circuit, closure switch S, switch T, switch K2 disconnect K1, adjust copper rod (4) and carbon
Stick (5) contact, checks circuit conditions；
Step 2: carrying out persistence drag arc disjunction test；
S21: to contact condition, closure switch S, switch T, switch K1 disconnect switch K2 for setting copper rod (4) and carbon-point (5)；It adjusts
Load device (8) makes it meet load parameter requirement；
S22: copper rod (4) and carbon-point (5) are gradually disengaged, and are adjusted spacing between copper rod (4) and carbon-point (5) and are formed persistence drag arc, draw
The arc duration is no less than Ts；
S23: will be in combustibles setting to copper rod (4) and carbon-point (5)；
S24: circuit, recording voltage current waveform are connected in access test sample (1)；
S25: if test object (1) effective action, combustibles are not ignited, and terminate arc energy to movement since generating electric arc
Measure E1No more than given threshold e1Then pass through, readjusts load parameter and repeat step S31~S35；Otherwise it exits；
Step 4: carrying out disposable arcing disjunction test；
S41: to contact condition, closure switch S, switch T, switch K1 disconnect switch K2 for adjustment copper rod (4) and carbon-point (5)；It adjusts
Load device (8) makes it meet load parameter requirement；
S42: will be in combustibles setting to copper rod (4) and carbon-point (5)；
S43: access test sample (1), closure switch K1, switch S, switch T disconnect K2, recording voltage current waveform；
S44: if test object (1) effective action, combustibles are not ignited, and terminate arc energy to movement since generating electric arc
Measure E2No more than given threshold e2, then pass through, readjust load parameter and repeat step S41~S44；Otherwise it exits.
7. a kind of poor contact ignition source prevention and control device fire prevention and control aptitude tests method according to claim 6, special
Sign is that the step 3 is E from generating electric arc to terminate arc energy to movement1, E1And e1Determine that method is as follows:
E1=P1×t1
e1=n × w1×T
P1=UI
In formula: t1For the time terminated since generating electric arc to movement, P1For arc power, n is constant, w1For constant, U is
Voltage sensor (6) observation when test, current sensor (2) observation when I is test.
8. a kind of test method of poor contact ignition source prevention and control device according to claim 6, which is characterized in that described
Step 4 is E from generating electric arc to terminate arc energy to movement2Determine that method is as follows:
E2=P2×t2
P2=UI
In formula: t2For the time terminated since generating electric arc to movement, P2For arc power, voltage sensor when U is test
(6) observation, current sensor (2) observation when I is test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535716.4A CN110221149B (en) | 2019-06-20 | 2019-06-20 | Device and method for testing fire prevention and control capability of poor-contact ignition source prevention and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910535716.4A CN110221149B (en) | 2019-06-20 | 2019-06-20 | Device and method for testing fire prevention and control capability of poor-contact ignition source prevention and control device |
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| CN110221149A true CN110221149A (en) | 2019-09-10 |
| CN110221149B CN110221149B (en) | 2021-09-07 |
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