CN109212317B - Cubical switchboard major loop resistance measurement frock - Google Patents
Cubical switchboard major loop resistance measurement frock Download PDFInfo
- Publication number
- CN109212317B CN109212317B CN201710525893.5A CN201710525893A CN109212317B CN 109212317 B CN109212317 B CN 109212317B CN 201710525893 A CN201710525893 A CN 201710525893A CN 109212317 B CN109212317 B CN 109212317B
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- China
- Prior art keywords
- probe
- insulating
- conductive contact
- conducting plate
- copper bar
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- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 239000000523 sample Substances 0.000 claims abstract description 92
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052802 copper Inorganic materials 0.000 claims abstract description 48
- 239000010949 copper Substances 0.000 claims abstract description 48
- 239000012212 insulator Substances 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
Abstract
The invention relates to a switch cabinet main loop resistance measuring tool which comprises an insulating rod, wherein one end of the insulating rod is fixedly provided with a current conducting plate which is used for being in conductive contact with a main loop copper bar to be measured, the current conducting plate is provided with a current signal output part which is used for being connected with a current signal line of a resistance meter, the current conducting plate is provided with a probe which is used for being in conductive contact with the main loop copper bar to be measured in an insulating way, and the probe is provided with a voltage signal output part which is used for being connected with a voltage signal line of the resistance meter. Utilize the electrically conductive contact of current conducting plate and probe and corresponding copper bar to gather corresponding voltage signal and current signal, and utilize the insulator spindle to send current conducting plate and probe into the cabinet body in, make the measurement of realization major loop resistance that can relax, convenient outside the cabinet body.
Description
Technical Field
The invention belongs to the field of remote contact type measurement, and particularly relates to a switch cabinet main loop resistance measurement tool.
Background
The loop resistance of the switch cabinet product is an important technical parameter of the product, and directly influences the temperature rise heating performance of the product. The user attaches extra importance to the parameter, and if the effective measurement is lacked, the major hidden danger is brought to the field operation of the product.
When the KYN61 cabinet is used for measuring ABC three-phase resistance of the main circuit, one pole of the resistance tester is required to be in reliable contact with the upper branch of the copper bar positioned in the busbar chamber, and the other pole of the resistance tester is required to be in reliable contact with the lower branch of the copper bar in the cable chamber. The busbar chamber has fewer elements and is convenient to operate, but the cable chamber has more elements. The lower branch is also located innermost in the cable compartment, making access for the operator difficult. It is difficult to ensure reliable contact with the lower branch, and repeated measurement is often required under the condition that the loop resistance is actually normal, so that the experimental process is influenced. And because the cable chamber component is more, portable space is narrow and small. It is easy to injure staff who enter the cable chamber.
Disclosure of Invention
The invention aims to provide a switch cabinet main loop resistance measuring tool which can remotely realize switch cabinet main loop resistance measurement without entering the interior of a switch cabinet.
In order to achieve the purpose, the technical scheme of the switch cabinet main loop resistance measuring tool provided by the invention is as follows: the utility model provides a cubical switchboard major loop resistance measurement frock, includes the insulator spindle, insulator spindle one end set firmly be used for with the current conducting plate of the major loop copper bar conductive contact that awaits measuring, be equipped with the current signal output part that is used for connecting resistance appearance current signal line on the current conducting plate, on the current conducting plate insulating assembly be equipped with be used for with the probe of the major loop copper bar conductive contact that awaits measuring is equipped with the voltage signal output part that is used for connecting resistance appearance voltage signal line on the probe.
The probe is movably assembled on the conductive plate, and an elastic piece which is used for applying force to the probe to press the probe to the corresponding main loop copper bar to be detected is arranged between the probe and the conductive plate.
The conductive plate is provided with two conductive contact arms which extend in parallel along the extension direction of the insulating rod and are arranged at intervals, and the probe is arranged in the interval between the two conductive contact arms through the insulating mounting frame.
The insulating mounting rack is fixedly arranged on the conductive contact arm, the probe is movably assembled on the insulating mounting rack along the extending direction of the conductive contact arm in a guiding mode so as to realize movable assembly between the probe and the conductive plate, and an anti-falling structure for preventing the probe from falling off under the action of the elastic piece is arranged between the probe and the insulating mounting rack.
The elastic piece is a reset spring with one end pressing on the probe and the other end press-fitted with the top of the insulating mounting frame, and the reset spring is sleeved on the probe.
The anti-falling structure comprises a blocking piece integrally arranged on the probe, and the corresponding end of the reset spring is in top-pressing fit with the blocking piece.
The probe is a copper bar probe, the head of the copper bar probe is used for contacting the tip end, the tail end of the copper bar probe is provided with a bending section, and the voltage signal output part is a signal wire connecting hole arranged on the bending section.
The insulating mounting frame comprises at least two insulating pressing plate components which are sequentially arranged at intervals along the extending direction of the conductive contact arms, the elastic piece is arranged between the two corresponding insulating pressing plate components, each insulating pressing plate component comprises two insulating pressing plates which are oppositely matched to clamp and fix the probe, and the two insulating pressing plates are fixed on the two conductive contact arms through a bolt connecting structure.
And one side of each insulating pressing plate, which faces the probe, is provided with a boss, and the side face of each boss, which faces the probe, is provided with a groove for positioning and clamping the probe.
The conductive plate is a conductive copper plate, the conductive copper plate is fixedly arranged on the insulating rod through a bolt fastening connecting piece arranged on the conductive copper plate, and the bolt fastening connecting piece on the conductive plate copper plate is the voltage signal output part.
The invention has the beneficial effects that: in the tool for measuring the resistance of the main loop of the switch cabinet, the current conducting plate is arranged at the corresponding end of the insulating rod, the probe is installed on the current conducting plate in an insulating mode, when the resistance of the main loop needs to be measured, the current conducting plate and the probe can be directly stretched into the cabinet body through the insulating rod outside the cabinet body, the current conducting plate and the probe are in conductive contact with the corresponding copper bar of the main loop to be measured, the current signal output part on the current conducting plate is connected with the current signal line of the resistance meter, and the voltage signal output part on the probe is connected with the voltage signal line of the resistance meter, so that the resistance meter can effectively measure the resistance of the main loop. Utilize current conducting plate and probe to realize the electrically conductive contact with corresponding copper bar to gather corresponding voltage signal and current signal, and utilize the insulator spindle to send current conducting plate and probe into the cabinet body in, make the measurement that can relax, convenient realization major loop resistance in the external portion of cabinet.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a switch cabinet main circuit resistance measurement tool provided by the invention;
FIG. 2 is a schematic structural view of the insulating rod of FIG. 1;
FIG. 3 is a top view of the insulating rod of FIG. 2;
FIG. 4 is a schematic diagram of the structure of the conductive plate of FIG. 1;
FIG. 5 is a right side schematic view of the conductive plate of FIG. 4;
FIG. 6 is a schematic view of the insulating platen of FIG. 1;
FIG. 7 is a top view of the insulating platen shown in FIG. 6;
FIG. 8 is a schematic structural view of the return spring of FIG. 1;
FIG. 9 is a schematic diagram of the structure of the probe of FIG. 1;
fig. 10 is a right side schematic view of the probe shown in fig. 9.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 to 10, the fixture for measuring resistance of a main circuit of a switch cabinet in the embodiment of the present invention specifically includes an insulating rod 1 for an operator to support remotely. As shown in fig. 1, the one end of insulator spindle sets firmly be used for with the main loop copper bar conductive contact's that awaits measuring current conducting plate 2, is equipped with the current signal output part that is used for connecting resistance appearance current signal line on the current conducting plate 2, the insulating assembly has the probe 5 that is used for with the main loop copper bar conductive contact that awaits measuring on the current conducting plate 2, is equipped with the voltage signal output part that is used for connecting resistance appearance voltage signal line on the probe 5. During the use, operating personnel remote operation insulator spindle sends the current conducting plate and probe into the cubical switchboard to correspond electrically conductive contact with corresponding major loop copper bar, and then realize the resistance measurement of corresponding major loop.
As shown in fig. 2, 3 and 4, the insulating rod 1 is a thin plate structure, two mounting screws 11 are disposed at one end of the insulating rod 1, bolt fastening connectors, i.e., bolt mounting holes 23, are disposed on the conductive plates 2 and are correspondingly matched with the mounting screws, and the conductive plates can be fixedly mounted on the insulating rod by screwing corresponding nuts.
In this embodiment, the insulating rod is an insulating structure as a whole. In other embodiments, the insulating rod may also be a distal operating member provided with a corresponding insulating sheath or insulating portion, as long as a corresponding insulating isolation is ensured.
As shown in fig. 4 and 5, the conductive plate 2 in the present embodiment is specifically a conductive copper plate, the conductive copper plate extends along the extending direction of the insulating rod as a whole, the conductive copper plate has two conductive contact arms 21 extending in parallel and arranged at intervals, the respective end surfaces of the two conductive contact arms 21 are used for being in conductive contact with the respective main circuit copper bar, and the two conductive contact arms form an interval 22. Two bolt fastening connecting pieces are arranged on the conducting plate 2, the bolt fastening connecting pieces are specifically bolt mounting holes 23 which are correspondingly matched with the mounting screw rods 11 on the insulating rod, and one of the two bolt mounting holes 23 is a current signal output part on the conducting plate 2. During the use, can directly spread into corresponding bolt mounting hole with corresponding current signal line on the resistance appearance, also can be connected current signal line on the installation screw rod that corresponds in order to realize being connected with the electric conduction of current conducting plate.
As shown in fig. 1, the probe 5 is disposed in the space between the two conductive contact arms through the insulating mounting frame, the probe 5 is movably mounted on the conductive plate 2, and in order to ensure effective contact between the probe 5 and the conductive plate 2, an elastic member is disposed between the probe 5 and the conductive plate 2 for applying force to the probe to press the corresponding main circuit copper bar to be tested, so that the probe 5 is movably mounted on the insulating mounting frame along the extending direction of the conductive contact arms to achieve movable mounting between the probe and the conductive plate, and an anti-disengaging structure for preventing the probe from disengaging from the insulating mounting frame under the action of the elastic member is disposed between the probe 5 and the insulating mounting frame, and the anti-disengaging structure includes a blocking piece 52 integrally disposed on the probe 5 and a blocking portion disposed on the insulating mounting frame and corresponding to the blocking piece.
In practice, as shown in fig. 1, 6 and 7, the insulating mounting frame includes two insulating pressing plate assemblies 3 arranged at intervals along the extending direction of the conductive contact arms, including a front insulating pressing plate assembly and a rear insulating pressing plate assembly, each insulating pressing plate assembly 3 is fixed on the two conductive contact arms respectively and is used in cooperation with the two insulating pressing plates 30 for clamping and fixing the probe, and each insulating pressing plate 30 is fixed on the two conductive contact arms 21 respectively through a bolt connection structure.
Moreover, a boss 31 is provided on the side of each insulating pressing plate 30 facing the probe, a groove 32 for positioning and clamping the probe is provided on the side of the boss 31 facing the probe, and the groove 32 is specifically an arc groove.
Fig. 6 and 7 are actually schematic structural diagrams of the two insulating press plates in the rear insulating press plate assembly in abutting fit with the return spring 4, the end part of the circular arc-shaped groove corresponding to the return spring is provided with a stepped structure 33, and when the two insulating press plates are buckled together, the return spring 4 directly abuts against the stepped structure to form the installation and positioning of the return spring.
The structure of the two insulating platens in the front insulating platen assembly is substantially the same as that of the insulating platens shown in fig. 6 and 7, except that the stepped structure is omitted. Of course, in other embodiments, corresponding stepped structures may be provided as well.
As shown in fig. 1 and 8, the elastic member is specifically a return spring 4 with one end pressing against the probe and the other end press-fitted with the top of the insulating mounting frame, and the return spring 4 is sleeved on the probe 5. In fact, the corresponding end of the return spring 4 is pressed against the stop piece 52 as the anti-falling structure on the probe, and the other end is directly pressed against the corresponding rear insulating pressing plate assembly.
As shown in fig. 1, 9 and 10, in this embodiment, the probe 5 is specifically a copper bar probe, a head of the copper bar probe is a contact tip 51 for contacting with a main circuit copper bar to be tested, a tail end of the copper bar probe is provided with a bent section 53, and the voltage signal output portion is a signal line connection hole 54 provided on the bent section 53.
When the ABC three-phase main circuit of the switch cabinet needs to be subjected to resistance measurement, corresponding resistance measurement is carried out on each main circuit respectively, one pole of the resistance tester is reliably contacted with an upper branch copper bar located in a switch cabinet busbar chamber, and a voltage line and a current line of the other pole of the resistance tester are correspondingly connected onto the resistance measurement tool. From the back door outside of cubical switchboard, utilize insulator spindle 1, directly push up current conducting plate 2 and probe 5 on the indoor lower branch copper bar of cable of cubical switchboard, through reset spring 4's elastic action, frock self weight and operating personnel application of force, can make probe 5, current conducting plate 2 and corresponding copper bar well contact, so, can easily realize the measurement of corresponding major loop resistance high-efficiently outside the cabinet, then measure other double-phase major loop resistance in proper order, can realize the resistance measurement work of cubical switchboard ABC three-phase major loop.
In use, the voltage signal line is connected to the probe, and the current signal line is connected to the conductive plate, considering the reason that a large current flows through the current signal line. And the adoption of the copper bar and the copper conducting plate can effectively improve the measurement precision and reliability.
In this embodiment, the probe is movably assembled on the conductive plate, and the elastic member is provided to apply a corresponding elastic acting force to the probe, so as to ensure reliable contact. In other embodiments, the spring may be omitted and the probe may be directly fixed to the conductive plate.
In the embodiment, the conductive plate is provided with the two conductive contact arms, and the probe is arranged between the two conductive contact arms, so that the contact position of the probe and the corresponding copper bar and the contact position of the two conductive contact arms and the corresponding copper bar are staggered by a set distance, and the measurement precision is improved.
In this embodiment, utilize insulating clamp plate subassembly to install the probe on the current conducting plate, mounting structure is comparatively simple, installs and removes comparatively conveniently. In other embodiments, the insulating mounting frame can adopt other structures as long as the probe is movably assembled on the conductive plate in an insulating mode.
In this embodiment, the conductive plate and the probe are made of copper material. In other embodiments, other metal conductive materials may be used for the conductive plates and probes.
Claims (3)
1. The utility model provides a cubical switchboard major loop resistance measurement frock which characterized in that: including the insulator spindle, insulator spindle one end set firmly be used for with the current conducting plate of the main loop copper bar conductive contact that awaits measuring, be equipped with the current signal output portion that is used for connecting resistance appearance current signal line on the current conducting plate, the insulating assembly be used for with the probe of the main loop copper bar conductive contact that awaits measuring on the current conducting plate, the current conducting plate has two conductive contact arms that extend parallelly and interval arrangement along insulator spindle extending direction, the corresponding terminal surface of two conductive contact arms is used for with corresponding main loop copper bar conductive contact, the probe is arranged in the interval of two conductive contact arms through insulating mounting bracket, the probe is followed the mobilizable assembly of conductive contact arm extending direction is equipped with to realize the activity assembly between probe and the current conducting plate on the insulating mounting bracket, is equipped with to the probe and applys the elastic component that forces the probe to compress tightly corresponding main loop copper bar that awaits measuring between probe and the current conducting plate, insulating mounting bracket sets firmly on the conductive contact arm, an anti-falling structure for preventing the probe from falling off under the action of the elastic piece is arranged between the probe and the insulating mounting rack, the elastic piece is a reset spring with one end pressed on the probe and the other end press-fitted with the top of the insulating mounting frame, the reset spring is sleeved on the probe, the anti-falling structure comprises a baffle sheet integrally arranged on the probe, the corresponding end of the reset spring is in top-pressing fit with the baffle sheet, the insulating mounting frame comprises at least two insulating pressure plate assemblies which are sequentially arranged at intervals along the extending direction of the conductive contact arm, the elastic piece is arranged between the two corresponding insulating pressing plate assemblies, each insulating pressing plate assembly respectively comprises two insulating pressing plates which are oppositely matched to clamp and fix the probe, the two insulating pressing plates are fixed on the two conductive contact arms through a bolt connecting structure, one side of each insulating pressing plate, which faces the probe, is provided with a boss, and the side face, which faces the probe, of each boss is provided with a groove for positioning and clamping the probe; in an initial state, one end of the probe, which is far away from the insulating rod, extends out of the interval between the two conductive contact arms, and a voltage signal output part for connecting a voltage signal wire of the resistance instrument is arranged on the probe.
2. The switchgear main loop resistance measurement tool of claim 1, characterized in that: the probe is a copper bar probe, the head of the copper bar probe is a contact tip, the tail end of the copper bar probe is provided with a bending section, and the voltage signal output part is a signal wire connecting hole arranged on the bending section.
3. The switch cabinet main loop resistance measurement tool according to claim 1 or 2, characterized in that: the current conducting plate is a conductive copper plate, the conductive copper plate is fixedly arranged on the insulating rod through a bolt fastening connecting piece arranged on the conductive copper plate, and the bolt fastening connecting piece on the conductive copper plate is the current signal output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525893.5A CN109212317B (en) | 2017-06-30 | 2017-06-30 | Cubical switchboard major loop resistance measurement frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525893.5A CN109212317B (en) | 2017-06-30 | 2017-06-30 | Cubical switchboard major loop resistance measurement frock |
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| Publication Number | Publication Date |
|---|---|
| CN109212317A CN109212317A (en) | 2019-01-15 |
| CN109212317B true CN109212317B (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710525893.5A Active CN109212317B (en) | 2017-06-30 | 2017-06-30 | Cubical switchboard major loop resistance measurement frock |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111198803B (en) * | 2020-01-11 | 2022-08-02 | 苏州浪潮智能科技有限公司 | Copper bar power supply reliability connection detection circuit and method for complete cabinet server |
| CN114137312B (en) * | 2020-11-02 | 2023-12-22 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
| CN112881807B (en) * | 2021-01-08 | 2023-11-14 | 大唐长春第二热电有限责任公司 | Tool and method for measuring loop resistance and carbon brush loop resistance of generator rotor |
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| CN109212317A (en) | 2019-01-15 |
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