CN111121993A - Temperature measuring device and method for circuit breaker - Google Patents
Temperature measuring device and method for circuit breaker Download PDFInfo
- Publication number
- CN111121993A CN111121993A CN202010029224.0A CN202010029224A CN111121993A CN 111121993 A CN111121993 A CN 111121993A CN 202010029224 A CN202010029224 A CN 202010029224A CN 111121993 A CN111121993 A CN 111121993A
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- China
- Prior art keywords
- measuring device
- temperature measuring
- temperature
- circuit breaker
- circuit board
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides a temperature measuring device and a method for a circuit breaker, wherein the device comprises a temperature measuring device circuit board, and the temperature measuring device circuit board is provided with a temperature measuring device metal sheet; the circuit board of the temperature measuring device is fixed on the contact or the lead plate of the circuit breaker through a screw; the temperature sensor of the temperature measuring device is welded on the circuit board of the temperature measuring device and is contacted with the metal sheet of the temperature measuring device; the screw and the contact/lead of the circuit breaker are in a conducting state, and the screw and a metal sheet of a temperature measuring device arranged on a circuit board of the temperature measuring device are in a conducting state. The circuit board of the temperature measuring device provided with the metal sheet of the temperature measuring device is fixed on the contact or the lead plate of the circuit breaker by using screws; the temperature of the contact or the lead plate of the circuit breaker is transmitted to a temperature sensor of the temperature measuring device arranged on the circuit board of the temperature measuring device by utilizing a metal sheet of the temperature measuring device arranged on the circuit board of the temperature measuring device. The invention has the advantages of simple structure, small volume, strong applicability, strong universality, convenient installation, convenient replacement and low cost.
Description
Technical Field
The invention relates to the field of power systems, in particular to a temperature measuring device and method for a circuit breaker.
Background
In the existing power supply system, a circuit breaker is installed in a power supply circuit and used for protecting the safety of the power supply circuit, a contact and a lead plate of the circuit breaker can generate heat under the action of current to generate temperature in the operation process, and particularly, the temperature can be rapidly increased when the lead plate and an external lead are in poor contact due to various reasons, so that the abnormal heat generation of a wiring board and an internal lead can influence the service life of the circuit breaker and even damage the circuit breaker body. Therefore, it is important to detect the body of the breaker in real time to prevent the breaker from being damaged.
There are three types of current detection of the temperature of the contacts of a circuit breaker: the first is to glue the temperature probe to the contact or lead plate of the circuit breaker. The second is to use a fitting with the circuit breaker case to insert the temperature probe into the circuit breaker contact or lead plate. And the third is to fasten the temperature probe to the contact or lead plate of the circuit breaker by adopting a screw fixing mode.
The first temperature detection is currently found in use to have two disadvantages: the first mode that adopts glue is not known to have or not contact well at the operation in-process, whether glues to glue firmly, and the mode detection accuracy degree of this kind of detection temperature is difficult to guarantee from the theory. Secondly, the temperature probe is costly. The second type of temperature sensing has two disadvantages: the first is to modify the breaker housing, the limitation is small, and the universality is not strong. Secondly, the temperature probe is costly. The third temperature measurement has two disadvantages: the first is that the versatility is difficult to achieve due to the volume of the temperature probe. Secondly, the temperature probe is costly.
Disclosure of Invention
The invention aims to provide a temperature measuring device and a temperature measuring method for a circuit breaker, which have the advantages of simple structure, small size, convenience in installation, strong applicability, accurate detection temperature, high precision, convenience in replacement, low cost and the like, and can be installed without changing a shell.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a temperature measuring device of a circuit breaker comprises a temperature measuring device circuit board (1-1) and a temperature measuring device temperature sensor (1-6);
the temperature measuring device circuit board (1-1) is provided with a temperature measuring device metal skin (1-5);
the temperature measuring device circuit board (1-1) is fixed on a circuit breaker contact or a lead plate through a screw;
the temperature sensor (1-6) of the temperature measuring device is welded on the circuit board (1-1) of the temperature measuring device and is in contact with the metal skin (1-5) of the temperature measuring device;
the screw and the contact/lead of the circuit breaker are in a conducting state, and the metal sheet (1-5) of the temperature measuring device arranged on the circuit board (1-1) of the temperature measuring device is in a conducting state, so that the temperature of the contact/lead of the circuit breaker is transmitted to the temperature sensor (1-6) of the temperature measuring device through the metal sheet of the temperature measuring device.
Furthermore, the metal sheet (1-5) of the temperature measuring device is a copper sheet.
Further, the temperature measuring device circuit board (1-1) is provided with a temperature measuring device screw fixing hole (1-2), a temperature measuring device bonding pad (1-3) is arranged along the temperature measuring device screw fixing hole (1-2), and the temperature measuring device bonding pad (1-3) is provided with a temperature measuring device wire passing hole (1-4).
Furthermore, a temperature measuring device temperature sensor lead bonding pad (1-7) is arranged on the temperature measuring device circuit board (1-1), and the temperature measuring device temperature sensor (1-6) is connected with external equipment through a temperature measuring device temperature sensor lead (1-8) connected with the temperature measuring device temperature sensor lead bonding pad (1-7).
Furthermore, the temperature sensor (1-6) of the temperature measuring device and the welding pad (1-3) of the temperature measuring device are distributed at two ends of the metal skin (1-5) of the temperature measuring device.
A method of circuit breaker temperature measurement, the method comprising:
fixing a temperature measuring device circuit board (1-1) provided with a temperature measuring device metal sheet (1-5) on a circuit breaker contact or a lead plate by using a screw;
the temperature of a contact of the circuit breaker or a lead plate is transferred to a temperature sensor (1-6) of the temperature measuring device arranged on a circuit board (1-1) of the temperature measuring device by utilizing a metal sheet (1-5) of the temperature measuring device arranged on the circuit board (1-1) of the temperature measuring device.
Compared with the background art, the invention has the advantages of simple structure, small volume, strong applicability, strong universality, convenient installation, convenient replacement and low cost; the temperature is accurate through circuit board copper sheet spread data, and the precision is high.
Drawings
Fig. 1 is a schematic diagram of a temperature measuring device for a circuit breaker according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a temperature measuring device for a miniature circuit breaker equipped with a circuit breaker according to a second embodiment of the present invention.
Fig. 3 is a schematic diagram of a circuit breaker mounted circuit breaker temperature measuring device according to a third embodiment of the present invention.
Detailed Description
The technical solution adopted by the present invention will be further explained with reference to the schematic drawings.
The first embodiment of the invention provides a temperature measuring device of a circuit breaker, as shown in figure 1, the temperature measuring device comprises a temperature measuring device circuit board 1-1, a temperature measuring device screw fixing hole 1-2, a temperature measuring device welding disc 1-3, a temperature measuring device wire passing hole 1-4, a temperature measuring device metal sheet 1-5 and a temperature measuring device temperature sensor 1-6.
As can be seen in FIG. 1, the surface of the circuit board 1-1 of the temperature measuring device is provided with the metal sheet 1-5 of the temperature measuring device, the metal sheet 1-5 of the temperature measuring device comprises but is not limited to a copper sheet, and the high heat conduction process is realized by utilizing the good heat conduction performance of the copper sheet. The metal sheet 1-5 of the temperature measuring device is of a special-shaped structure, one end of a circuit board 1-1 of the temperature measuring device is provided with a screw fixing hole 1-2 of the temperature measuring device, a pad 1-3 of the temperature measuring device is arranged along the screw fixing hole 1-2 of the temperature measuring device, the pad 1-3 of the temperature measuring device is provided with a wire through hole 1-4 of the temperature measuring device, and the wire through hole 1-4 of the temperature measuring device in the embodiment is communicated with the circuit board 1-1 of the temperature measuring device and is eight in number.
The temperature measuring device metal sheet 1-5 is provided with a temperature measuring device pad 1-3 connecting terminal which is conducted with the temperature measuring device pad 1-3 and can conduct heat conduction and an equal-width part which extends towards the other end of the temperature measuring device circuit board 1-1, the equal-width part of the temperature measuring device metal sheet 1-5 is provided with a temperature measuring device temperature sensor 1-6 in a welding mode, the temperature measuring device temperature sensor 1-6 is in contact with the temperature measuring device metal sheet 1-5, therefore, the copper sheet can transmit the high temperature of a contact/lead of the circuit breaker to the temperature measuring device temperature sensor 1-6, and the temperature measuring device temperature sensor 1-6 sends obtained data to a monitoring terminal.
It is worth mentioning that the circuit board 1-1 of the temperature measuring device is fixed on the contact or the lead plate of the circuit breaker through screws, the screws are arranged at the screw fixing holes 1-2 of the temperature measuring device, and the temperature sensor 1-6 of the temperature measuring device is welded on the circuit board 1-1 of the temperature measuring device and is in contact with the metal sheet 1-5 of the temperature measuring device, so that the heat conduction temperature measurement work can be carried out by utilizing the copper sheet.
It should be noted that the screw and the contact/lead of the circuit breaker are in a conducting state, and the screw and the metal sheet 1-5 of the temperature measuring device arranged on the circuit board 1-1 of the temperature measuring device are in a conducting state, so that the temperature of the contact/lead of the circuit breaker can be ensured to be transmitted to the temperature sensor 1-6 of the temperature measuring device through the metal sheet of the temperature measuring device.
Referring to fig. 1, a circuit board 1-1 of the temperature measuring device is provided with temperature measuring device temperature sensor lead bonding pads 1-7, wherein the temperature measuring device temperature sensor lead bonding pads 1-7 are distributed on two sides of a temperature measuring device metal skin 1-5 with equal width, the temperature measuring device temperature sensor 1-6 is connected with external equipment through a temperature measuring device temperature sensor lead 1-8 connected with the temperature measuring device temperature sensor lead bonding pads 1-7, and the temperature measuring device temperature sensor lead bonding pads 1-7 are electrically connected with the temperature measuring device temperature sensor 1-6.
As can be seen from the above, the circuit breaker temperature measuring device is analyzed through fig. 1, the temperature sensor detects the temperature of the copper sheet of the circuit board in real time, and the copper sheet of the circuit board and the fixing screw are in a conduction state. It can be understood that the temperature sensor detects the temperature of the circuit breaker in real time.
The method for realizing the temperature measurement of the circuit breaker by utilizing the device provided by the embodiment comprises the following steps: fixing a temperature measuring device circuit board provided with a temperature measuring device metal sheet on a circuit breaker contact or a lead plate by using a screw; the temperature of the contact or the lead plate of the circuit breaker is transmitted to a temperature sensor of the temperature measuring device arranged on the circuit board of the temperature measuring device by utilizing a metal sheet of the temperature measuring device arranged on the circuit board of the temperature measuring device.
According to the invention, the temperature sensor is welded on the circuit board (namely the circuit board of the temperature measuring device), the circuit board of the temperature measuring device is fixed on the contact or the lead plate of the circuit breaker in a screw fixing mode, the screw for fixing the temperature measuring device, the contact of the circuit breaker and the lead plate of the circuit breaker are in a conduction state, and the screw for fixing the temperature measuring device is tightly connected with the circuit board and is in a conduction state with the copper sheet of the circuit board (the copper material has good heat conductivity). When the circuit breaker normally operates, the temperature at the contact or the temperature at the lead plate is transmitted to the temperature sensor through the copper sheet of the circuit board, and the temperature sensor can detect the temperature. The detection method is direct contact temperature measurement, temperature detection is carried out by physical transmission instead of traditional air transmission, and the detection device is more accurate and more reliable, and the false detection is almost zero. The withstand voltage value of the temperature sensor and the copper sheet of the circuit board is above 6KV, and the problem of voltage breakdown does not exist.
A second embodiment of the present invention provides a miniature circuit breaker mounted circuit breaker temperature measurement device, see fig. 2, which includes: the circuit breaker temperature measuring device comprises an outgoing line breaker temperature measuring device 2-1, an outgoing line breaker temperature measuring device fixing screw 2-2, an outgoing line small circuit breaker lead plate 2-3, an incoming line small circuit breaker contact 2-4, an incoming line breaker temperature measuring device fixing screw 2-5 and an incoming line breaker temperature measuring device 2-6. The miniature circuit breaker normal operating, circuit breaker temperature measuring device real-time detection miniature circuit breaker temperature, it is accurate reliable, the precision is high.
A third embodiment of the invention provides a circuit breaker mounted circuit breaker temperature measurement device, see fig. 3, which includes: the circuit breaker comprises an incoming circuit breaker contact 3-1, an incoming circuit breaker temperature measuring device 3-2, an incoming circuit breaker temperature measuring device fixing screw 3-3, an outgoing circuit breaker temperature measuring device 3-4, an outgoing circuit breaker temperature measuring device fixing screw 3-5 and an outgoing circuit breaker lead plate 3-6. The circuit breaker temperature measuring device is arranged on the circuit breaker to be analyzed through the graph 3, and the copper sheet of the circuit board is in a conducting state with the incoming line contact and the outgoing line lead plate of the circuit breaker. The circuit breaker normal operating, circuit breaker temperature measuring device real-time detection circuit breaker temperature, it is accurate reliable, the precision is high.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A temperature measuring device of a circuit breaker is characterized by comprising a temperature measuring device circuit board (1-1) and a temperature measuring device temperature sensor (1-6);
the temperature measuring device circuit board (1-1) is provided with a temperature measuring device metal skin (1-5);
the temperature measuring device circuit board (1-1) is fixed on a circuit breaker contact or a lead plate through a screw;
the temperature sensor (1-6) of the temperature measuring device is welded on the circuit board (1-1) of the temperature measuring device and is in contact with the metal skin (1-5) of the temperature measuring device;
the screw and the contact/lead of the circuit breaker are in a conducting state, and the metal sheet (1-5) of the temperature measuring device arranged on the circuit board (1-1) of the temperature measuring device is in a conducting state, so that the temperature of the contact/lead of the circuit breaker is transmitted to the temperature sensor (1-6) of the temperature measuring device through the metal sheet of the temperature measuring device.
2. The temperature measuring device for the circuit breaker according to claim 1, wherein the metal sheet (1-5) of the temperature measuring device is a copper sheet.
3. The temperature measuring device of the circuit breaker according to claim 1, wherein the temperature measuring device circuit board (1-1) is provided with a temperature measuring device screw fixing hole (1-2), a temperature measuring device pad (1-3) is arranged along the temperature measuring device screw fixing hole (1-2), and the temperature measuring device pad (1-3) is provided with a temperature measuring device wire passing hole (1-4).
4. The temperature measuring device of the circuit breaker according to claim 1, characterized in that the circuit board (1-1) of the temperature measuring device is provided with a temperature measuring device temperature sensor lead pad (1-7), and the temperature measuring device temperature sensor (1-6) is connected with external equipment through a temperature measuring device temperature sensor lead (1-8) connected with the temperature measuring device temperature sensor lead pad (1-7).
5. The temperature measuring device for the circuit breaker according to claim 1, wherein the temperature sensor (1-6) of the temperature measuring device and the bonding pad (1-3) of the temperature measuring device are distributed at two ends of the metal skin (1-5) of the temperature measuring device.
6. A method for measuring the temperature of a circuit breaker is characterized by comprising the following steps:
fixing a temperature measuring device circuit board (1-1) provided with a temperature measuring device metal sheet (1-5) on a circuit breaker contact or a lead plate by using a screw;
the temperature of a contact of the circuit breaker or a lead plate is transferred to a temperature sensor (1-6) of the temperature measuring device arranged on a circuit board (1-1) of the temperature measuring device by utilizing a metal sheet (1-5) of the temperature measuring device arranged on the circuit board (1-1) of the temperature measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029224.0A CN111121993A (en) | 2020-01-10 | 2020-01-10 | Temperature measuring device and method for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029224.0A CN111121993A (en) | 2020-01-10 | 2020-01-10 | Temperature measuring device and method for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121993A true CN111121993A (en) | 2020-05-08 |
Family
ID=70488581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010029224.0A Withdrawn CN111121993A (en) | 2020-01-10 | 2020-01-10 | Temperature measuring device and method for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121993A (en) |
-
2020
- 2020-01-10 CN CN202010029224.0A patent/CN111121993A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200508 |
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| WW01 | Invention patent application withdrawn after publication |