CN214011483U - Modular electric fire detector exempts from to work a telephone switchboard test box - Google Patents
Modular electric fire detector exempts from to work a telephone switchboard test box Download PDFInfo
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- CN214011483U CN214011483U CN202022677513.XU CN202022677513U CN214011483U CN 214011483 U CN214011483 U CN 214011483U CN 202022677513 U CN202022677513 U CN 202022677513U CN 214011483 U CN214011483 U CN 214011483U
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Abstract
The utility model relates to a modular electric fire detector exempts from test box of working a telephone switchboard, including the test shell, be equipped with a detector product in the test shell, be provided with test circuit board on the test shell, mutual inductance coil is connected to test circuit board's lower extreme, passes the current input line in the mutual inductance coil, is provided with residual current test probe, temperature test probe and alarm bus on the test circuit board, and residual current test probe links to each other with the residual current test channel of detector product, and temperature test probe links to each other with the temperature test channel of detector product, alarm bus connects the alarm system of detector product. The utility model provides a technical scheme can avoid artificial repeated wiring and dismouting link, realizes that combination formula electrical fire detector mass production detects, reduces the cost of labor in the product inspection process.
Description
Technical Field
The utility model belongs to the technical field of the product detects, a modular electric fire detector test box is related to, especially a modular electric fire detector test box of exempting from to work a telephone switchboard.
Background
The occurrence of the electric fire accident not only brings great economic loss, but also threatens the life safety of people, and the electric fire detector is bred in order to strengthen the prevention of the electric fire. The electric fire detector predicts the possibility of fire occurrence by detecting the magnitude of leakage current and the temperature of the lead in a line in real time. Before the electric fire detector leaves a factory, the functions of the electric fire detector need to be detected so as to ensure the service performance of the electric fire detector.
The whole test channel number of combination formula electric fire detector is more, need the tester to open a way to every passageway during the inspection, the function of state such as short circuit and fire alarm tests one by one, if combination formula electric fire detector has M residual current test channel and N temperature test channel, then single product short circuit test need carry out M + N short circuit and M + N repeals the operation, open a way the test and need carry out M + N disconnection and M + N pressure line operation, fire alarm test need carry out M times current regulation and N times intensification operation, batch production tests and then needs the operation more, need carry out repeatedly the disconnection to the circuit, cause the large amount of consumption of man-hour, be unfavorable for the batch production of combination formula electric fire detector product to detect, this is prior art's weak point.
Therefore, it is necessary to provide a modular electrical fire detector junction-free testing box to solve the above-mentioned problems in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a design modular electric fire detector test box of exempting from to work a telephone switchboard to need carry out the tearing open that relapse to the circuit when combination formula electric fire detector tests, a large amount of consumption man-hours to solve above-mentioned technical problem, avoid artificial repeated wiring and dismouting link, realize that combination formula electric fire detector mass production detects, reduce the cost of labor in the product inspection process.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model provides a modular electric fire detector exempts from test box of working a telephone switchboard, including the test shell, a detector product is equipped with in the test shell, the test shell is fixed and spacing to the upside of detector product, the downside, the left side, right side and front side, the rear side of detector product is fixed by the fixation clamp on the test shell, be provided with test circuit board on the test shell, mutual inductance coil is connected to test circuit board's lower extreme, pass the electric current input line in the mutual inductance coil, the last residual current test probe that is provided with of test circuit board, temperature test probe and alarm bus, residual current test probe links to each other with the residual current test channel of detector product, temperature test probe links to each other with the temperature test channel of detector product, alarm bus connects the alarm system of detector product.
Preferably, the current input line is connected with a digital three-purpose meter calibrator; the current required by the alarm value is input to the current input line through the digital three-purpose meter calibrator, and whether the leakage current alarm function of the detector product is normal or not is detected.
Preferably, the detector product comprises one residual current test channel and four temperature test channels.
Preferably, the test circuit board comprises a relay K2, a relay K4 and a relay K7, a first end of a coil of the relay K2, a first end of a coil of the relay K4 and a first end of a coil of the relay K7 are all connected with a first end of a short-circuit control line, a second end of a coil of the relay K2, a second end of a coil of the relay K4 and a second end of a coil of the relay K7 are all connected with a second end of the short-circuit control line, when the first end and the second end of the short-circuit control line are connected, the relay K2, the relay K4 and the relay K7 are operated, corresponding to the short circuit of one residual current testing channel and four temperature testing channels, the first end and the second end of the short circuit control line are disconnected, the relay K2, the relay K4 and the relay K7 are recovered, the corresponding residual current testing channel and the four temperature testing channels return to a normal monitoring state, the short-circuit fault is recovered, and two ends of the short-circuit control line are connected with a short-circuit switch of the DC24V selective power supply switch; the short circuit test of 1 residual current test channel and 4 temperature test channels of the detector product can be completed through the closing and opening operation of the short circuit switch.
Preferably, the test circuit board comprises a relay K3, a relay K5 and a relay K8, a first end of a coil of the relay K3, a first end of a coil of the relay K5 and a first end of a coil of the relay K8 are all connected with a first end of an open control line, a second end of a coil of the relay K3, a second end of a coil of the relay K5 and a second end of a coil of the relay K8 are all connected with a second end of the open control line, when the first end and the second end of the open control line are connected, the relay K3, the relay K5 and the relay K8 are operated, corresponding to the open circuit of one residual current testing channel and four temperature testing channels, the first end and the second end of the open circuit control line are disconnected, the relay K3, the relay K5 and the relay K8 are recovered, the corresponding residual current test channel and the four temperature test channels return to a normal monitoring state, open-circuit faults are recovered, and two ends of the open-circuit control line are connected with an open-circuit switch of the DC24V selective power supply switch; the open circuit test of 1 residual current test channel and 4 temperature test channels of the detector product can be completed through one-time closing and opening operation of the open circuit switch.
Preferably, an equivalent load 100K Ω is connected between temperature test probes on the test circuit board, 100K Ω is equivalent to the internal resistance of the temperature sensing resistor at the ambient temperature of 25 ℃, the test circuit board comprises a relay K1 and a relay K6, a first coil end of the relay K1 and a first coil end of the relay K6 are both connected with a first temperature control line end, a second coil end of the relay K1 and a second coil end of the relay K6 are both connected with a second temperature control line end, when the first end and the second end of the temperature control line are connected, the relay K1 and the relay K6 operate, the four temperature testing channels are simultaneously connected with a 20K omega resistor in parallel on the basis of the original 100K omega resistor, the resistance values of the four temperature testing channels are changed into 16.67K omega which is slightly higher than the alarm value of the temperature testing channels, the temperature testing channels alarm, the two ends of the temperature control line are connected with a temperature alarm switch of the DC24V selective power supply switch; whether the high-temperature alarm function of the detector product is normal can be detected through the on-off operation of the temperature alarm switch once.
The utility model has the advantages that the combined electrical fire detector wiring-free test box replaces the original screw line pressing connection mode by adopting the contact connection mode of the probe, by switching control of the electromagnetic relay, the short circuit state and the open circuit state in the testing link are simulated, by measuring the normal state resistance value and the alarm state resistance value of the thermistor and adopting a fixed value resistor for replacement, the operation of connecting the thermistor is saved, the test box can complete the function debugging of all residual current test channels and temperature test channels of the detector product at one time through the control of 3 switches and the adjustment of the digital three-purpose meter calibrator at one time, compared with the original production test flow, the manual repeated wiring and dismounting links are avoided, thereby saving a large amount of manual operation time and directly reducing the labor cost in the product inspection process. Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.
Therefore, compared with the prior art, the utility model has the substantive characteristics and the progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a wiring-free testing box of the combined electrical fire detector in the embodiment.
Fig. 2 is a circuit diagram of a test circuit board.
The device comprises a temperature test probe 1, a test shell 2, a detector product 3, a fixing clamp 4, a test circuit board 5, a mutual inductor 6 and a residual current test probe 7.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the utility model provides a combined electrical fire detector wiring-free testing box, which comprises a testing shell 2, the utility model discloses a detector product 3, the test shell 2 is equipped with a detector product 3 in, test shell 2 is to the upside of detector product 3, the downside, the left side, right side and front side are fixed and spacing, the rear side of detector product 3 is fixed by fixation clamp 4 on the test shell 2, be provided with test circuit board 5 on the test shell 2, mutual inductor 6 is connected to test circuit board 5's lower extreme, pass the current input line in the mutual inductor 6, be provided with alarm bus on the test circuit board 5, residual current test probe 7 and temperature test probe 1, residual current test probe 7 links to each other with the residual current test channel of detector product 3, temperature test probe 1 links to each other with the temperature test channel of detector product 3, alarm bus connects the alarm system of detector product 3.
The current input line is connected with the digital three-purpose meter calibrator; the current required by the alarm value is input into the current input line through the digital three-purpose meter calibrator, and whether the leakage current alarm function of the detector product 3 is normal or not is detected.
The detector product 3 comprises a residual current test channel and four temperature test channels.
As shown in fig. 2, the test circuit board 5 includes a relay K2, a relay K4 and a relay K7, a first end of a coil of the relay K2, a first end of a coil of the relay K4 and a first end of a coil of the relay K7 are all connected to a first end of a short-circuit control line, a second end of a coil of the relay K2, a second end of a coil of the relay K4 and a second end of a coil of the relay K7 are all connected to a second end of the short-circuit control line, when the first end and the second end of the short-circuit control line are connected, the relay K2, the relay K4 and the relay K7 are operated, corresponding to the short circuit of one residual current testing channel and four temperature testing channels, the first end and the second end of the short circuit control line are disconnected, the relay K2, the relay K4 and the relay K7 are recovered, the corresponding residual current testing channel and the four temperature testing channels return to a normal monitoring state, the short-circuit fault is recovered, and two ends of the short-circuit control line are connected with a short-circuit switch of the DC24V selective power supply switch; the short circuit test of 1 residual current test channel and 4 temperature test channels of the detector product 3 can be completed through one-time closing and opening operation of the short circuit switch.
The test circuit board 5 comprises a relay K3, a relay K5 and a relay K8, wherein the first end of a coil of the relay K3, the first end of a coil of the relay K5 and the first end of a coil of the relay K8 are all connected with the first end of an open circuit control line, the second end of a coil of the relay K3, the second end of a coil of the relay K5 and the second end of a coil of the relay K8 are all connected with the second end of the open circuit control line, when the first end and the second end of the open circuit control line are connected, the relay K3, the relay K5 and the relay K8 act, corresponding to the open circuit of one residual current testing channel and four temperature testing channels, the first end and the second end of the open circuit control line are disconnected, the relay K3, the relay K5 and the relay K8 are recovered, the corresponding residual current test channel and the four temperature test channels return to a normal monitoring state, open-circuit faults are recovered, and two ends of an open-circuit control line are connected with an open-circuit switch of the DC24V selective power supply switch; the open circuit test of 1 residual current test channel and 4 temperature test channels of the detector product 3 can be completed through one closing and opening operation of the open circuit switch.
An equivalent load 100K omega is connected between temperature test probes 1 on the test circuit board 5, 100K omega is equivalent to the internal resistance value of a temperature sensing resistor at the ambient temperature of 25 ℃, the test circuit board 5 comprises a relay K1 and a relay K6, the first end of a coil of the relay K1 and the first end of a coil of the relay K6 are both connected with the first end of a temperature control line, the second end of the coil of the relay K1 and the second end of the coil of the relay K6 are both connected with the second end of the temperature control line, when the first end and the second end of the temperature control line are connected, the relay K1 and the relay K6 act, the four temperature testing channels are simultaneously connected with a 20K omega resistor in parallel on the basis of the original 100K omega resistor, the resistance values of the four temperature testing channels are changed into 16.67K omega which is slightly higher than the alarm value of the temperature testing channels, the temperature testing channels alarm, the two ends of the temperature control line are connected with a temperature alarm switch of the DC24V selective power supply switch; whether the high-temperature alarm function of the detector product 3 is normal can be detected through the on and off operations of the temperature alarm switch once.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any person skilled in the art can think of the inventive changes, and several improvements and decorations made without departing from the principle of the present invention should fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a modular electric fire detector exempts from test box of working a telephone switchboard, a serial communication port, including the test shell, a detector product is equipped with in the test shell, the test shell is to the upside of detector product, the downside, the left side, right side and front side are fixed and spacing, the rear side of detector product is fixed by the fixation clamp on the test shell, be provided with test circuit board on the test shell, mutual inductance coil is connected to test circuit board's lower extreme, pass the electric current input line in the mutual inductance coil, the last residual current test probe that is provided with of test circuit board, temperature test probe and alarm bus, residual current test probe links to each other with the residual current test channel of detector product, temperature test probe links to each other with the temperature test channel of detector product, alarm bus connects the alarm system of detector product.
2. The modular electrical fire detector junction-free test box of claim 1, wherein the current input line is connected to a digital multimeter verifier.
3. A modular electrical fire detector hot-line free test box according to claim 1 or claim 2, wherein the detector product includes one residual current test channel and four temperature test channels.
4. The modular electrical fire detector junction-free testing box of claim 3, wherein the testing circuit board comprises a relay K2, a relay K4 and a relay K7, the first coil end of the relay K2, the first coil end of the relay K4 and the first coil end of the relay K7 are all connected to the first end of the short-circuit control line, the second coil end of the relay K2, the second coil end of the relay K4 and the second coil end of the relay K7 are all connected to the second end of the short-circuit control line, when the first and second ends of the short-circuit control line are connected, the relay K2, the relay K4 and the relay K7 are operated to short-circuit a residual current testing channel and four temperature testing channels, the first and second ends of the short-circuit control line are disconnected, the relay K2, the relay K4 and the relay K7 are restored, and the residual current testing channel and the four temperature testing channels are returned to the normal monitoring state, and (4) recovering from the short-circuit fault, wherein the two ends of the short-circuit control line are connected with the short-circuit switch of the DC24V selective power supply switch.
5. The modular electrical fire detector junction-free testing box of claim 4, wherein the testing circuit board comprises a relay K3, a relay K5 and a relay K8, a first coil end of the relay K3, a first coil end of the relay K5 and a first coil end of the relay K8 are all connected to a first open control line end, a second coil end of the relay K3, a second coil end of the relay K5 and a second coil end of the relay K8 are all connected to a second open control line end, when the first and second open control lines are connected, the relay K3, the relay K5 and the relay K8 are operated to open a residual current testing channel and four temperature testing channels, the first and second ends of the open control lines are disconnected, the relay K3, the relay K5 and the relay K8 are restored, and the residual current testing channel and the four temperature testing channels are returned to a normal monitoring state, and (4) recovering the open-circuit fault, wherein the open-circuit switch of the DC24V selective power supply switch is connected to two ends of the open-circuit control line.
6. The combined electrical fire detector wiring-free test box of claim 5, wherein the equivalent load 100K Ω is connected between the temperature test probes on the test circuit board, 100K Ω is equivalent to the internal resistance of the temperature sensing resistor at 25 ℃ of ambient temperature, the test circuit board comprises a relay K1 and a relay K6, the first end of the coil of the relay K1 and the first end of the coil of the relay K6 are both connected with the first end of the temperature control line, the second end of the coil of the relay K1 and the second end of the coil of the relay K6 are both connected with the second end of the temperature control line, when the first end and the second end of the temperature control line are connected, the relay K1 and the relay K6 act, corresponding to four temperature test channels, a 20K Ω resistor is connected in parallel on the basis of the original 100K Ω resistor, the resistance of the four temperature test channels becomes 16.67K Ω, which is slightly higher than the alarm value of the temperature test channels, and a temperature test channel alarm is realized, and two ends of the temperature control line are connected with a temperature alarm switch of the DC24V selective power supply switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022677513.XU CN214011483U (en) | 2020-11-17 | 2020-11-17 | Modular electric fire detector exempts from to work a telephone switchboard test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022677513.XU CN214011483U (en) | 2020-11-17 | 2020-11-17 | Modular electric fire detector exempts from to work a telephone switchboard test box |
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| Publication Number | Publication Date |
|---|---|
| CN214011483U true CN214011483U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022677513.XU Active CN214011483U (en) | 2020-11-17 | 2020-11-17 | Modular electric fire detector exempts from to work a telephone switchboard test box |
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| Country | Link |
|---|---|
| CN (1) | CN214011483U (en) |
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- 2020-11-17 CN CN202022677513.XU patent/CN214011483U/en active Active
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