CN108508780A - A kind of fire test furnace control device - Google Patents
A kind of fire test furnace control device Download PDFInfo
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- CN108508780A CN108508780A CN201810638125.5A CN201810638125A CN108508780A CN 108508780 A CN108508780 A CN 108508780A CN 201810638125 A CN201810638125 A CN 201810638125A CN 108508780 A CN108508780 A CN 108508780A
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- 238000012360 testing method Methods 0.000 title claims abstract description 66
- 238000002474 experimental method Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims 1
- 238000012795 verification Methods 0.000 description 6
- 230000009970 fire resistant effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a kind of fire test furnace control devices, for controlling fire resistance test circuit, including start stop switch circuit, timing start-up circuit, timing pause TP circuit, step-up/step-down circuit and transformer, the transformer and start stop switch circuit, timing start-up circuit, timing pause TP circuit, step-up/step-down circuit is in parallel, transformer joint test circuit, it further include the supervisory relay accessed in hookup, fuse and breaker, the present invention is by being arranged supervisory relay, fuse and breaker, in off-test, whether capable of clearly judging each line fault, the control device of cable tray fire resistance test and bus duct fire resistance test is two-in-one, share a set of control device, save space, it is cost-effective.
Description
Technical field
The present invention relates to cable fire-proof facility technology field more particularly to a kind of fire test furnace control devices.
Background technology
With the continuous growth of population, the large public buildings such as skyscraper, hotel, supermarket are continuously increased, subway,
Tunnel and large-scale place of public amusement, public transit facility are also sharply increasing.In today that safety is increasingly taken seriously, spy
It is not unimpeded, the maximum limit for the electric power and communication for how in the case of fire ensureing these public places within a certain period of time
Trying to gain time precious to one for degree, reduces the injures and deaths of personnel and the loss of lives and properties, is people always in the project of exploration.Therefore
The fire resisting test of cable is particularly important, and cable is needed to carry out GB29415-2013《Fire-resistant cable slot box》And GA/T
537-2005《Busbar mains system（Bus duct）It is fire-retardant, fire prevention, fire resistance test method》Two groups of tests, in the prior art
This two groups of test and experiment devices are mutual indepedent, and also waste of resource inconvenient to use, now needing to design a control device can be same
When suitable for two different experiments.
Invention content
Against the above deficiency, the present invention provides a kind of fire test furnace control device, by cable tray fire resistance test and
The control device of bus duct fire resistance test is two-in-one, shares a set of control device, saves space, cost-effective.
The present invention is achieved by the following technical solutions：A kind of fire test furnace control device is used for Control experiment
Circuit, including start stop switch circuit, timing start-up circuit, timing pause TP circuit, step-up/step-down circuit and transformer M, the transformation
Device is in parallel with start stop switch circuit, timing start-up circuit, timing pause TP circuit, step-up/step-down circuit, transformer joint test electricity
Road further includes supervisory relay, fuse and the breaker accessed in hookup.
As a preferred technical solution of the present invention, the start stop switch circuit includes the alarm B being sequentially connected in series,
One switch SB1, first switch SB2, relay KA1, the ends alarm B connect positive pole, and it is negative that the ends relay KA1 connect power supply
Pole further includes the relay KA1 normally opened contact KA1-1 in parallel with second switch.
As a preferred technical solution of the present invention, the timing start-up circuit includes the relay KA1 being sequentially connected in series
Normally opened contact KA1-2, timing starting switch SB3, temperature sensor Rt, the ends normally opened contact KA1-2 connect positive pole, temperature
It spends the ends sensor Rt and connects power cathode.
As a preferred technical solution of the present invention, the temperature sensor Rt is mounted in test flume box.
As a preferred technical solution of the present invention, the timing pause TP circuit includes that the normally closed of supervisory relay is touched
Point, one end connect with timing pause TP switch SB4, normally opened contact KA1-2 and are followed by positive pole, another termination power cathode.
As a preferred technical solution of the present invention, the step-up/step-down circuit includes boosted switch SB5, step-down switching
The normally opened contact KA1-3 of SB6 and the first relay KA1, after the boosted switch SB5 is in parallel with step-down switching SB3, one end series connection
The normally opened contact KA1-3 of first relay KA1 connects positive pole, another termination power cathode.
Compared with prior art, beneficial effects of the present invention are：
1, the control device of cable tray fire resistance test and bus duct fire resistance test is two-in-one, share a set of control device, section
About space, it is cost-effective.
2, it is equipped with fuse on every firewire of hookup and concatenates breaker simultaneously, can reflect every circuit in real time
Working condition, when cable breaks down, and short circuit occurs, since fuse failure needs the regular hour, the feedback speed of breaker
Higher than fuse, while playing dual judgement, the frequency for replacing fuse is decreased.
3, the cut-in temperature sensor in timing start-up circuit can automatically turn on meter when temperature reaches test temperature
When device, string has a verification relay in every hookup, and the normally-closed contact of verification relay is accessed timing pause TP circuit
In, once occurring the situation of short circuit or open circuit in circuit, timer will automatically stop, the automatic collection fire resistance test time,
It provides while facilitate, fire resistance period obtained by experiment can be made more accurate.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention；
Fig. 2 is power cable hookup schematic diagram；
Fig. 3 is control cable testing circuit diagram；
Fig. 4 is bus duct fire resistance test circuit.
Specific implementation mode
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific implementation modes are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to direction or remote
Direction from geometric center of specific component.
Embodiment：A kind of fire test stove control device of the present invention can be by GB29415-2013《Fire-resistant cable slot box》With
GA/T 537-2005《Busbar mains system（Bus duct）It is fire-retardant, fire prevention, fire resistance test method》（Abbreviation GA/T 537-
2005《Bus duct fire resistance test》）Two kinds of experiments, share a set of control device.
As described in Figure 1, a kind of fire test furnace control device, be used for Control experiment circuit, including start stop switch circuit,
Timing start-up circuit, timing pause TP circuit, step-up/step-down circuit and transformer M, transformer M start with start stop switch circuit, timing
Circuit, timing pause TP circuit, step-up/step-down circuit are in parallel, transformer M joint test circuits, further include in access hookup
Supervisory relay, fuse and breaker.
Start stop switch circuit includes the alarm B being sequentially connected in series, first switch SB1, second switch SB2, the first relay
The end KA1, alarm B connects positive pole, and the ends relay KA1 connect power cathode, and second switch SB2 parallel connection relays KA1 is normal
Contact KA1-1 is opened, latching circuit is constituted, wherein first switch SB1 is normally closed switch, when second switch SB2 is closed, relay
The both ends KA1 obtain it is electric after, normally opened contact KA1-1, KA1-2, KA1-3 are closed, in start stop switch circuit concatenate an alarm
B, when on-test, alarm B can beep, and since fire resistance test has, high temperature and pressure is dangerous, during entire experiment
The warning function that alarm B can have been played, while when control device is out of service because of failure, alarm B is mute also
Enough give experimenter's suggesting effect.
Timing start-up circuit includes the normally opened contact KA1-2 for the relay KA1 being sequentially connected in series, timing starting switch SB3, temperature
Sensor Rt, normally opened contact KA1-2 connection positive poles are spent, the ends temperature sensor Rt connect power cathode, temperature sensor
Rt is mounted in test flume box, by temperature sensor Rt access timing start-up circuits, waits for that fire resistance test in-furnace temperature rises to 50
DEG C when, be connected timing start-up circuit, automatically turn on timer.
Step-up/step-down circuit includes the normally opened contact KA1-3 of boosted switch SB5, step-down switching SB6 and the first relay KA1,
After boosted switch SB5 is in parallel with step-down switching SB3, the normally opened contact KA1-3 of the first relay KA1 of one end series connection is connecing power supply just
Voltage is adjusted to test voltage needed for cable by pole, another termination power cathode by increasing apparatus, and test cable accesses transformer
The voltage of output is opened fire test furnace and is tested, and equipment can open after high pressure power-off by secondary again after setting voltage back to zero
Dynamic running equipment, overtension when equipment being avoided to start damage hookup device and influence the accuracy of experiment.
Fig. 2 and Fig. 3 is GB29415-2013《Fire-resistant cable slot box》Hookup, wherein Fig. 2 be power cable experiment
Circuit, Fig. 3 cable testing circuits in order to control, power cable include three firewire L1, L2, L3, and a zero curve N controls cable packet
A firewire L and a zero curve N are included, fuse is connected on every firewire（FU1-FU4）With breaker (QF1-QF4), experiment electricity
Road is open circuit, can not have to access verification relay, and slot box is put into progress high-temperature flame-proof experiment, cable one end in fire test furnace
The high voltage that access standard requires, the other end access slot box, and slot box carries out high-temperature flame-proof experiment in fire test furnace.
GB29415-2013《Fire-resistant cable slot box》Experiment process, first be closed first switch SB1, relay KA1 two
Hold electric, normally opened contact KA1-1, KA1-2, KA1-3 are closed, and boosted switch SB5, starting transformer M are closed, by voltage tune
To test voltage needed for cable, test cable accesses the voltage of transformer output, is closed timing starting switch SB3, opens fire resisting
Trial furnace is tested, and when fire resistance test in-furnace temperature rises to 50 DEG C, can automatically turn on timer, if electric at high temperature
Cable damages, and high voltage can puncture insulating layer, causes have electric current generation in cable, and fuse or breaker can provide instead in time
Feedback, illustrates that test specimen is unqualified, can terminate to test.When reaching standard and wanting seeking time, fuse does not break, and breaker does not disconnect, then stops
It only tests, examined cable meets standard requirement；When fuse failure or breaker disconnect, it is closed timing pause TP switch SB4, pause
Timer, stops experiment, and examined cable is unsatisfactory for standard requirement.
Fig. 4 is GA/T 537-2005《Bus duct fire resistance test》In hookup, by three-phase four-wire system busbar main line list
Member（Bus duct）It is positioned in fire test furnace and carries out fire resistance test, every firewire in bus duct（L1-L3）It is connect with zero curve N
Enter power supply, and verification relay is accessed in each circuit（KA2-KA5）, load（RL1-RL4）, indicator light（D1-D4）, wherein
Firewire is further connected with fuse on circuit（FU1-FU3）With breaker (QF1-QF3), the normally-closed contact of supervisory relay（KA2-1-
KA5-1）After parallel with one another in access timing pause TP circuit, when fire resistance test circuit is connected, normally-closed contact（KA2-1-KA5-1）
It will disconnect, when there is open circuit in any one test loop, the normally-closed contact of the supervisory relay in the hookup（KA2-1 or
KA3-1 or KA4-1 or KA5-1）It can be closed, timing pause TP circuit is connected, timer stops timing.
GA/T 537-2005《Bus duct fire resistance test》Experimentation, with GB29415-2013《Fire-resistant cable slot box》
Difference, hookup are closed circuit, and each circuit concatenation fuse is 2A, and one ground circuit of three-phase is in series with adjustable load and refers to
Show lamp, load is adjusted according to the different test voltage of bus duct, so that electric current in circuit is reached the 0.25A that standard requires, so
Fire test furnace is opened afterwards to be tested, when fire resistance test in-furnace temperature rises to 50 DEG C, the conducting of timing start-up circuit, timer
Timing is automatically begun to, when experiment carries out wanting seeking time cable not break down to standard, time-out clock, off-test, institute
Inspection bus duct meets standard requirement；When there is short circuit in cable fault in any one test loop, fuse failure or breaker
It will disconnect, verification relay both ends dead electricity, the normally-closed contact of the supervisory relay in the hookup（KA2-1 or KA3-1 or
KA4-1 or KA5-1）It will be closed, timing pause TP circuit turn-on, timer automatic pause, while occur in the circuit of open circuit
Indicator light can extinguish, off-test, and examined cable is unsatisfactory for standard requirement；When there is open circuit in cable fault, verification relay
Both ends dead electricity, the normally-closed contact of the supervisory relay in the hookup（KA2-1 or KA3-1 or KA4-1 or KA5-1）It will close
It closes, timing pause TP circuit turn-on, timer automatic pause, indicator light goes out, off-test, and examined cable is unsatisfactory for standard requirement.
Finally it should be noted that：The foregoing is merely the preferred embodiments of the present invention, are not intended to restrict the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the present invention
Within the scope of shield.
Claims (6)
1. a kind of fire test furnace control device, for controlling fire resistance test circuit, it is characterised in that：Including start stop switch electricity
Road, timing start-up circuit, timing pause TP circuit, step-up/step-down circuit and transformer M, the transformer M and start stop switch circuit, meter
When start-up circuit, timing pause TP circuit, step-up/step-down circuit be in parallel, transformer M joint test circuits further include access experiment electricity
Supervisory relay, fuse in road and breaker.
2. according to the fire test furnace control device described in claim 1, it is characterised in that：The start stop switch circuit packet
The alarm B being sequentially connected in series, first switch SB1, second switch SB2, relay KA1 are included, the ends alarm B connect positive pole,
The ends relay KA1 connect power cathode, further include the relay KA1 normally opened contact KA1-1 in parallel with second switch.
3. according to the fire test furnace control device described in claim 1, it is characterised in that：The timing start-up circuit packet
Include the normally opened contact KA1-2, timing starting switch SB3, temperature sensor Rt of the relay KA1 being sequentially connected in series, normally opened contact
The ends KA1-2 connect positive pole, and the ends temperature sensor Rt connect power cathode.
4. according to the fire test furnace control device described in claim 3, it is characterised in that：The temperature sensor Rt
In test flume box.
5. according to the fire test furnace control device described in claim 1, it is characterised in that：The timing pause TP circuit packet
The normally-closed contact of supervisory relay is included, one end connects with timing pause TP switch SB4, normally opened contact KA1-2 and is followed by positive pole, separately
One termination power cathode.
6. according to the fire test furnace control device described in claim 1, it is characterised in that：The step-up/step-down circuit includes
The normally opened contact KA1-3 of boosted switch SB5, step-down switching SB6 and the first relay KA1, the boosted switch SB5 are opened with decompression
After closing SB3 parallel connections, the normally opened contact KA1-3 of the first relay KA1 of one end series connection connects positive pole, another termination power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638125.5A CN108508780A (en) | 2018-06-20 | 2018-06-20 | A kind of fire test furnace control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810638125.5A CN108508780A (en) | 2018-06-20 | 2018-06-20 | A kind of fire test furnace control device |
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| Publication Number | Publication Date |
|---|---|
| CN108508780A true CN108508780A (en) | 2018-09-07 |
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| CN201810638125.5A Pending CN108508780A (en) | 2018-06-20 | 2018-06-20 | A kind of fire test furnace control device |
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|---|---|---|---|---|
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| CN203310713U (en) * | 2013-05-09 | 2013-11-27 | 烟台金润核电应用技术有限公司 | Fire-resistant testing system of control cable fire-proof cladding device |
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-
2018
- 2018-06-20 CN CN201810638125.5A patent/CN108508780A/en active Pending
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|---|---|---|---|---|
| JP2008027840A (en) * | 2006-07-25 | 2008-02-07 | Sanyo Electric Co Ltd | Battery pack |
| CN201281746Y (en) * | 2008-11-06 | 2009-07-29 | 贵州雅光电子科技股份有限公司 | Hot load cyclic test stand |
| CN201293809Y (en) * | 2008-11-06 | 2009-08-19 | 天津电气传动设计研究所 | Automatic balancing and adjusting device for three-phase multipath current for temperature test |
| CN101846665A (en) * | 2010-05-30 | 2010-09-29 | 兴乐电缆有限公司 | Test device for simulation combustion of environment-friendly electric wire |
| CN201740830U (en) * | 2010-08-03 | 2011-02-09 | 南京信息工程大学 | Surge protector thermal stability testing device |
| CN203310713U (en) * | 2013-05-09 | 2013-11-27 | 烟台金润核电应用技术有限公司 | Fire-resistant testing system of control cable fire-proof cladding device |
| CN203275327U (en) * | 2013-05-10 | 2013-11-06 | 烟台金润核电应用技术有限公司 | Fire resistance testing system for power cable fire-proof cladding device |
| CN105305342A (en) * | 2014-05-28 | 2016-02-03 | 上海精成电器成套有限公司 | Compact cast fire-resistant bus duct with steel shell |
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