CN220751419U - Distribution drawer main contact clamping force sensor - Google Patents
Distribution drawer main contact clamping force sensor Download PDFInfo
- Publication number
- CN220751419U CN220751419U CN202322638584.2U CN202322638584U CN220751419U CN 220751419 U CN220751419 U CN 220751419U CN 202322638584 U CN202322638584 U CN 202322638584U CN 220751419 U CN220751419 U CN 220751419U
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- Prior art keywords
- clamping force
- force sensor
- copper alloy
- main contact
- alloy shell
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- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 54
- 239000000956 alloy Substances 0.000 claims abstract description 6
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 238000012795 verification Methods 0.000 abstract description 15
- 239000000084 colloidal system Substances 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of detection technology accessories, in particular to a power distribution drawer main contact clamping force sensor; the high-voltage relay can allow large current to pass through, thermal relay verification and leakage protection relay verification can be performed, and operation is convenient; the device comprises a clamping force sensor copper alloy shell, wherein a mounting groove is formed in the clamping force sensor copper alloy shell, and a resistance type pressure strain gauge is arranged in the mounting groove; an insulating layer is filled between the resistance type pressure strain gauge and the inner wall of the mounting groove; the insulating layer is connected with the mounting groove and the resistance type pressure strain gauge through colloid bonding; the clamping force sensor copper alloy shell is in a clamp head shape, and a gap is formed in the middle of the clamping force sensor copper alloy shell; a fixing hole is formed in the copper alloy shell of the clamping force sensor; a current wiring terminal, a power terminal and a signal terminal for transmitting and supplying signals of the resistance type pressure strain gauge are arranged on the copper alloy shell of the clamping force sensor; the copper alloy shell of the clamping force sensor is made of beryllium copper alloy material.
Description
Technical Field
The utility model relates to the technical field of detection technology accessories, in particular to a clamping force sensor for a main contact of a power distribution drawer.
Background
The power distribution drawer needs to regularly check the clamping force of the main contact, so that poor contact between the main contact and the copper bar of the power distribution cabinet caused by insufficient clamping force is avoided. The existing clamping force sensor is a stainless steel shell internally embedded with a resistance type pressure strain gauge, so that the clamping force of a main contact can be measured.
For example, chinese patent utility model discloses a one-time plug-in tension tester (publication number CN 213239421U) for a power distribution drawer. The tension tester comprises a microcomputer and a clamping force probe, wherein the microcomputer is connected with the clamping force probe, the clamping force probe transmits measured clamping force data signals to the microcomputer for data processing and analysis, and measured values are displayed through a display screen connected with the microcomputer. The tension tester can be used for testing the one-time insertion tension of the power distribution drawer, and can carry out audible and visual alarm when the test value is smaller than the threshold value so as to prompt operators.
However, when the present inventors embodied this device, the following drawbacks were found to exist: besides clamping force verification, the verification items of the distribution drawer also include items such as leakage protection relay verification by a thermal relay, and the like, and the test verification items need to input larger current to a main contact of the distribution drawer so as to verify the accuracy of protection actions; in order to save time and improve efficiency during verification of the distribution drawer, after the clamping force sensor is clamped by the main contact of the distribution drawer, the tension of the main contact can be measured, and larger current can flow to the main contact of the distribution drawer, so that the verification functions of the thermal relay, such as a leakage protection relay, are realized; however, when the clamping force sensor shell passes through a large current, the sensor is heated seriously due to a large resistance value, so that the clamping force sensor is easy to damage, and the clamping force sensor shell has certain use limitation.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides the distribution drawer main contact clamping force sensor which can allow large current to pass, can perform thermal relay verification and leakage protection relay verification and is convenient to operate.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a distribution drawer main contact presss from both sides tight force transducer, includes the tight force transducer copper alloy casing of clamp, offered the mounting groove on the tight force transducer copper alloy casing, the mounting groove embeds there is resistance type pressure strain gauge.
As a preferable scheme, an insulating layer is filled between the resistance type pressure strain gauge and the inner wall of the mounting groove.
As a preferable scheme, the insulating layer is connected with the mounting groove and the resistance type pressure strain gauge through colloid bonding.
As a preferable scheme, the copper alloy shell of the clamping force sensor is in a clamp head shape, and a gap is formed in the middle of the copper alloy shell of the clamping force sensor.
As a preferable scheme, the copper alloy shell of the clamping force sensor is provided with a fixing hole.
As a preferable scheme, the copper alloy shell of the clamping force sensor is provided with a current connecting terminal, a power terminal and a signal terminal for transmitting and supplying signals of the resistance type pressure strain gauge.
As a preferable scheme, the copper alloy shell of the clamping force sensor is made of beryllium copper alloy material.
As a preferred embodiment, the insulating layer is made of a modified phenolic material.
(III) beneficial effects
Compared with the prior art, the utility model provides the power distribution drawer main contact clamping force sensor, which has the following beneficial effects: the main contact clamping force sensor of the power distribution drawer has the advantages that the copper alloy shell of the clamping force sensor is wear-resistant, the stress transmission cannot be influenced due to repeated plugging and unplugging, the electric conductivity is good, the heating value is small when larger current flows, and the performance of the internal embedded resistance type pressure strain gauge cannot be influenced; the high-current-allowable thermal relay and leakage protection relay can be checked, and the operation is convenient.
Drawings
FIG. 1 is a schematic plan view of the present utility model;
FIG. 2 is a schematic diagram of an embodiment of the detection process of the present utility model;
the reference numerals in the drawings: 1. clamping a force sensor copper alloy shell; 2. a mounting groove; 3. a resistive pressure strain gage; 4. an insulating layer; 5. a slit; 6. a fixing hole; 7. a current connection terminal; 8. a power supply terminal; 9. a signal terminal; 10. and a main contact of the power distribution drawer.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
The power distribution drawer one-time insertion tension tester in the background art has the advantages that the items of checking the power distribution drawer, such as clamping force checking, thermal relay checking, leakage protection relay checking and the like, are included, and larger current needs to be input to the power distribution drawer main contact 10 for checking the accuracy of protection actions; in order to save time and improve efficiency during verification of the distribution drawer, after the clamping force sensor is clamped by the distribution drawer main contact 10, the tension of the distribution drawer main contact 10 can be measured, and larger current can flow to the distribution drawer main contact 10, so that the verification functions of a leakage protection relay and the like of the thermal relay are realized; however, when the clamping force sensor shell passes through a large current, the clamping force sensor is heated seriously due to a large resistance value, so that the clamping force sensor is easy to damage, and certain use limitation exists.
In order to solve the technical problem, the utility model provides a power distribution drawer main contact clamping force sensor which is applied to power distribution drawer detection.
1-2, the power distribution drawer main contact clamping force sensor specifically comprises:
the pressure sensor comprises a clamping force sensor copper alloy shell 1, wherein a mounting groove 2 is formed in the clamping force sensor copper alloy shell 1, and a resistance type pressure strain gauge 3 is arranged in the mounting groove 2.
According to the power distribution drawer main contact clamping force sensor, the clamping force sensor copper alloy shell 1 is abrasion-resistant, stress transmission is not affected due to repeated insertion and extraction, the conductivity is good, the heating value is small when larger current flows, and the performance of the internally embedded resistance type pressure strain gauge 3 is not affected; the high-current-allowable thermal relay and leakage protection relay can be checked, and the operation is convenient.
In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Example 1
Referring to fig. 1, a clamping force sensor for a main contact of a power distribution drawer comprises a copper alloy shell 1 of the clamping force sensor, wherein a mounting groove 2 is formed in the copper alloy shell 1 of the clamping force sensor, and a resistance type pressure strain gauge 3 is arranged in the mounting groove 2; an insulating layer 4 is filled between the resistance type pressure strain gauge 3 and the inner wall of the mounting groove 2; the insulating layer 4 is connected with the mounting groove 2 and the resistance type pressure strain gauge 3 through colloid bonding; the insulating layer 4 is made of modified phenolic material.
The power distribution drawer main contact clamping force sensor provided by the embodiment is characterized in that the mounting groove 2 is formed in the position shown in fig. 1 of the copper alloy shell 1 of the clamping force sensor, the resistance type pressure strain gauge 3 is placed in the mounting groove 2, the resistance type pressure strain gauge 3 is separated from the inner wall of the mounting groove 2 by the modified phenolic material, an insulating layer 4 is formed, the phenolic material is made of a rigid material, deformation can be well transmitted, the influence on precision error of clamping force measurement is small, the notch of the mounting groove 2 is sealed by colloid such as 704 silica gel, and the falling of the resistance type pressure strain gauge 3 and the modified phenolic insulating material inside the mounting groove 2 is avoided.
Example 2
The power distribution drawer main contact clamping force sensor provided by the embodiment 1 is further optimized, and specifically comprises a clamping force sensor copper alloy shell 1, wherein a mounting groove 2 is formed in the clamping force sensor copper alloy shell 1, and a resistance type pressure strain gauge 3 is arranged in the mounting groove 2; the clamping force sensor copper alloy shell 1 is in a clamp head shape, and a gap 5 is formed in the middle of the clamping force sensor copper alloy shell 1; a fixing hole 6 is formed in the copper alloy shell 1 of the clamping force sensor; the clamping force sensor copper alloy shell 1 is provided with a current wiring terminal 7, a power terminal 8 and a signal terminal 9 for signal transmission and power supply of the resistance type pressure strain gauge 3; the clamping force sensor copper alloy shell 1 is in a pincerlike shape, so that the clamping force sensor copper alloy shell 1 can be conveniently inserted into the main contact 10 of the power distribution drawer, the reserved gap 5 can meet the deformation requirement of the clamping force sensor copper alloy shell 1, the current wiring terminal 7 can allow external large current to be transmitted to the clamping force sensor copper alloy shell 1, the large current flows into the power distribution drawer to be detected, the functions of checking a thermal relay and the like are realized, multiple checks can be realized through one-time plugging, multiple plugging operations are avoided, the fact that the volume and the weight of the power distribution drawer are large is considered, the testing efficiency can be greatly improved, and the labor intensity of the checking is reduced by using the sensor; the fixing hole 6 can allow the external testing system main equipment to be connected with the clamping force sensor copper alloy shell 1 into a whole after being spliced, so that the using convenience of the clamping force sensor copper alloy shell 1 is improved.
Specifically, the copper alloy shell 1 of the clamping force sensor is made of beryllium copper alloy material; the whole clamping force sensor copper alloy shell 1 is formed by processing and shaping beryllium copper alloy materials, the clamping force sensor copper alloy shell 1 made of the beryllium copper alloy materials is wear-resistant, stress transmission cannot be influenced due to repeated insertion and extraction, the conductivity is good, the heating value is small when large current flows, and the performance of the resistor type pressure strain gauge 3 buried in the inside cannot be influenced.
The using process of the power distribution drawer main contact clamping force sensor provided by the utility model is as follows: when the power distribution drawer main contact 10 is used, the clamping force sensor copper alloy shell 1 is clamped into the power distribution drawer main contact 10, the clamping force sensor copper alloy shell 1 transmits a pressure signal to the resistance type pressure strain gauge 3, the resistance type pressure strain gauge 3 converts the pressure signal into an electric signal, and the electric signal is transmitted to the outside through the signal terminal 9, so that the verification and measurement of the pressing force of the power distribution drawer main contact 10 are realized. Simultaneously, external large current flows into the clamping force sensor copper alloy shell 1 through the large current wiring terminal, the clamping force sensor copper alloy shell 1 is contacted with the main contact 10 of the power distribution drawer, and the current flows into the power distribution drawer, so that functions such as thermal relay verification and the like are realized; multiple kinds of verification can be realized through one-time plugging.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.
Claims (8)
1. The utility model provides a distribution drawer main contact presss from both sides tight force transducer, its characterized in that includes presss from both sides tight force transducer copper alloy casing (1), install mounting groove (2) on pressing from both sides tight force transducer copper alloy casing (1), install resistive pressure strain gauge (3) in mounting groove (2).
2. The distribution drawer main contact clamping force sensor of claim 1, wherein an insulating layer (4) is filled between the resistive pressure strain gauge (3) and the inner wall of the mounting groove (2).
3. The distribution drawer main contact clamping force sensor of claim 2, wherein the insulating layer (4) is adhesively connected with the mounting groove (2) and the resistive pressure strain gauge (3) by glue.
4. The power distribution drawer main contact clamping force sensor according to claim 1, wherein the clamping force sensor copper alloy shell (1) is in a clamp head shape, and a gap (5) is formed in the middle of the clamping force sensor copper alloy shell (1).
5. The distribution drawer main contact clamping force sensor of claim 4, wherein the clamping force sensor copper alloy shell (1) is provided with a fixing hole (6).
6. The power distribution drawer main contact clamping force sensor according to claim 5, characterized in that the clamping force sensor copper alloy shell (1) is provided with a current wiring terminal (7), and a power terminal (8) and a signal terminal (9) for signal transmission and power supply of the resistance type pressure strain gauge (3).
7. The distribution drawer main contact clamping force sensor of claim 1, wherein the clamping force sensor copper alloy housing (1) is made of beryllium copper alloy material.
8. The distribution drawer main contact clamping force sensor of claim 2, wherein the insulating layer (4) is a modified phenolic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322638584.2U CN220751419U (en) | 2023-09-27 | 2023-09-27 | Distribution drawer main contact clamping force sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322638584.2U CN220751419U (en) | 2023-09-27 | 2023-09-27 | Distribution drawer main contact clamping force sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220751419U true CN220751419U (en) | 2024-04-09 |
Family
ID=90556596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322638584.2U Active CN220751419U (en) | 2023-09-27 | 2023-09-27 | Distribution drawer main contact clamping force sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220751419U (en) |
-
2023
- 2023-09-27 CN CN202322638584.2U patent/CN220751419U/en active Active
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