CN208283749U - A kind of fire test furnace control device - Google Patents
A kind of fire test furnace control device Download PDFInfo
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- CN208283749U CN208283749U CN201820950087.2U CN201820950087U CN208283749U CN 208283749 U CN208283749 U CN 208283749U CN 201820950087 U CN201820950087 U CN 201820950087U CN 208283749 U CN208283749 U CN 208283749U
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Abstract
The utility model 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 utility model passes through setting 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 occupied, save the cost.
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 technique
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 needs to carry out GB29415-2013 " fire-resistant cable slot box " and GA/T for cable
Two groups of tests of 537-2005 " bus mains system (bus duct) is fire-retardant, prevents fires, the test method of fire resistance ", in the prior art
This two groups of test and experiment devices are mutually indepedent, and also waste of resource inconvenient to use, now needing to design a control device can be same
When suitable for two different tests.
Summary of the invention
In view of the above deficiencies, 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 occupied, save the cost.
The present invention is achieved by the following technical solutions: a kind of fire test furnace control device, is used to 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 end alarm B connect positive pole, and it is negative that the end relay KA1 connects 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 start switch SB3, temperature sensor Rt, the end normally opened contact KA1-2 connects positive pole, temperature
It spends the end 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 the normally closed touching of supervisory relay
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, the invention has the benefit that
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 dress
It sets, saves space occupied, save the cost.
2, it is equipped with fuse on every firewire of hookup and concatenates breaker simultaneously, can reflect every route 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 of replacement 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, test gained fire resistance period can be made more accurate.
Detailed description of the invention
Fig. 1 is circuit diagram of the 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 embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments 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 furnace control device of the present invention can by GB29415-2013 " fire-resistant cable slot box " and
GA/T 537-2005 " bus mains system (bus duct) is fire-retardant, prevents fires, the test method of fire resistance " (abbreviation GA/T 537-
2005 " bus duct fire resistance tests ") two kinds of tests, share a set of control device.
As described in Figure 1, a kind of fire test furnace control device, be used to 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 and start stop switch circuit, timing start
Circuit, timing pause TP circuit, step-up/step-down circuit are in parallel, transformer M joint test circuit, 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
KA1, the end alarm B connect positive pole, and the end relay KA1 connects power cathode, and second switch SB2 parallel connection relay KA1 is normal
Contact KA1-1 is opened, latching circuit is constituted, wherein first switch SB1 is normally closed switch, when second switch SB2 closure, 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 test
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 that the normally opened contact KA1-2 for the relay KA1 being sequentially connected in series, timing start switch SB3, temperature
Sensor Rt, normally opened contact KA1-2 connection positive pole are spent, the end temperature sensor Rt connects power cathode, temperature sensor
Rt is mounted in test flume box, and temperature sensor Rt is accessed in timing start-up circuit, rises to 50 to fire resistance test in-furnace temperature
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 increasing apparatus by pole, another termination power cathode, and test cable accesses transformer
The voltage of output is opened fire test furnace and is tested, and equipment is secondary again after can returning to zero setting voltage to open after high pressure power-off
Dynamic running equipment, overtension when equipment being avoided to start damage on hookup device and influence the accuracy of test.
Fig. 2 and Fig. 3 is the hookup of GB29415-2013 " fire-resistant cable slot box ", and wherein Fig. 2 is power cable test
Circuit, Fig. 3 are control cable testing circuit, and power cable includes three firewire L1, L2, L3, a zero curve N, control cable packet
A firewire L and a zero curve N are included, fuse (FU1-FU4) and breaker (QF1-QF4), test electricity are connected on every firewire
Road is open circuit, can not have to access verification relay, and slot box is put into progress high-temperature flame-proof test, cable one end in fire test furnace
The high voltage of standard requirements is accessed, the other end accesses slot box, and slot box carries out high-temperature flame-proof test in fire test furnace.
The test process of GB29415-2013 " fire-resistant cable slot box ", first closure 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, and closure timing starts 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 the standard requirements time, fuse does not break, and breaker does not disconnect, then stops
It only tests, examined cable meets standard requirements；When fuse failure or breaker disconnect, it is closed timing pause TP switch SB4, pause
Timer, stops test, and examined cable is unsatisfactory for standard requirements.
Fig. 4 is the hookup in GA/T 537-2005 " bus duct fire resistance test ", by three-phase four-wire system bus main line list
First (bus duct), which is placed in fire test furnace, carries out fire resistance test, and the every firewire (L1-L3) and zero curve N in bus duct connect
Enter power supply, and accesses verification relay (KA2-KA5), load (RL1-RL4), indicator light (D1-D4) in each circuit, wherein
Fuse (FU1-FU3) and breaker (QF1-QF3), the normally-closed contact (KA2-1- of supervisory relay are further connected on firewire circuit
KA5-1) in rear access timing pause TP circuit parallel with one another, when the conducting of fire resistance test circuit, normally-closed contact (KA2-1-KA5-1)
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.
The experimentation of GA/T 537-2005 " bus duct fire resistance test ", with GB29415-2013 " fire-resistant cable slot box "
Difference, hookup are closed circuit, and each route concatenation fuse is 2A, and one ground route of three-phase is in series with adjustable load and refers to
Show lamp, payload size is adjusted according to the different test voltage of bus duct, so that electric current in route is reached the 0.25A of standard requirements, 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 test carries out without failure to standard requirements time cable, time-out clock, off-test, institute
Inspection bus duct meets standard requirements；When there is short circuit in cable fault in any one test loop, fuse failure or breaker
Will disconnect, verification relay both ends power loss, 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, the conducting of timing pause TP circuit, timer automatic pause, while occurring in breaking circuit
Indicator light can extinguish, off-test, and examined cable is unsatisfactory for standard requirements；When there is open circuit in cable fault, verification relay
The normally-closed contact (KA2-1 or KA3-1 or KA4-1 or KA5-1) of both ends power loss, the supervisory relay in the hookup will close
It closes, the conducting of timing pause TP circuit, timer automatic pause, indicator light off, off-test, and examined cable is unsatisfactory for standard requirements.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of 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
It modifies the technical solutions described in the foregoing embodiments 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 guarantor of the 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 circuit further includes access test electricity
Supervisory relay, fuse and breaker in road.
2. fire test furnace control device according to 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 end alarm B connects positive pole,
The end relay KA1 connects power cathode, further includes the relay KA1 normally opened contact KA1-1 in parallel with second switch.
3. fire test furnace control device according to claim 1, it is characterised in that: the timing start-up circuit packet
Include the normally opened contact KA1-2 for the relay KA1 being sequentially connected in series, timing starts switch SB3, temperature sensor Rt, normally opened contact
The end KA1-2 connects positive pole, and the end temperature sensor Rt connects power cathode.
4. fire test furnace control device according to claim 3, it is characterised in that: the temperature sensor Rt
It is mounted in test flume box.
5. fire test furnace control device according to 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. fire test furnace control device according to 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 connection, 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 |
|---|---|---|---|
| CN201820950087.2U CN208283749U (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 |
|---|---|---|---|
| CN201820950087.2U CN208283749U (en) | 2018-06-20 | 2018-06-20 | A kind of fire test furnace control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208283749U true CN208283749U (en) | 2018-12-25 |
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ID=64699210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820950087.2U Active CN208283749U (en) | 2018-06-20 | 2018-06-20 | A kind of fire test furnace control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208283749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508780A (en) * | 2018-06-20 | 2018-09-07 | 江苏省建筑工程质量检测中心有限公司 | A kind of fire test furnace control device |
| CN114926004A (en) * | 2022-05-13 | 2022-08-19 | 镇江西门子母线有限公司 | Method and system for evaluating fire resistance of ceramic-based composite bus duct |
-
2018
- 2018-06-20 CN CN201820950087.2U patent/CN208283749U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108508780A (en) * | 2018-06-20 | 2018-09-07 | 江苏省建筑工程质量检测中心有限公司 | A kind of fire test furnace control device |
| CN114926004A (en) * | 2022-05-13 | 2022-08-19 | 镇江西门子母线有限公司 | Method and system for evaluating fire resistance of ceramic-based composite bus duct |
| CN114926004B (en) * | 2022-05-13 | 2023-11-24 | 镇江西门子母线有限公司 | Method and system for evaluating fire resistance of ceramic matrix composite bus duct |
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