CN113484548A - Tensioning screw insulation measuring device and measuring method thereof - Google Patents
Tensioning screw insulation measuring device and measuring method thereof Download PDFInfo
- Publication number
- CN113484548A CN113484548A CN202110632082.1A CN202110632082A CN113484548A CN 113484548 A CN113484548 A CN 113484548A CN 202110632082 A CN202110632082 A CN 202110632082A CN 113484548 A CN113484548 A CN 113484548A
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- measuring
- lead
- insulation
- measurement
- conducting strip
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- 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
Abstract
The invention provides a tension screw insulation measuring device and a measuring method thereof, the device comprises an insulation meter which is connected with a pressurization measuring lead and a grounding measuring lead, and the device comprises a connecting mechanism, wherein the connecting mechanism comprises a sleeve cap, the bottom of the sleeve cap is provided with a through hole for the lead to pass through, the sleeve cap is internally provided with a first conducting strip and a second conducting strip, the first conducting strip is connected with the lead, a spring is arranged between the first conducting strip and the second conducting strip, the sleeve cap is internally provided with an internal thread matched with the tension screw, and the lead is electrically connected with the pressurization measuring lead. The device and the method are convenient for connecting the insulating meter and the tensioning screw rod, and improve the measurement efficiency.
Description
Technical Field
The invention belongs to the field of hydraulic generator detection equipment, and particularly relates to a tension screw insulation measuring device and a measuring method thereof.
Background
At present, for insulation measurement of large-scale hydroelectric generating set stator tension screws, a screw protective sleeve is firstly removed, then numbering is carried out, and then each tension screw is measured one by one, so that the measurement time is slow, the wire replacement is frequent, the measurement times are many, the service life of a digital insulation meter is greatly shortened, the service life of an insulation meter battery is shortened, and the tension screw and a pressurization measurement lead of the insulation meter are not easy to be connected and fixed, so that the measurement efficiency is influenced.
Disclosure of Invention
The invention aims to provide a tension screw insulation measuring device and a measuring method thereof, which are convenient for connecting an insulation meter and a tension screw and improve the measuring efficiency.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides an insulating measuring device of straining screw, includes insulating table, insulating table and pressurization measurement lead wire and ground connection measurement pin connection, including coupling mechanism, coupling mechanism includes the cover cap, and cover cap bottom is equipped with the through-hole that supplies the lead wire to pass, is equipped with first conducting strip and second conducting strip in the cover cap, first conducting strip and pin connection, is equipped with the spring between first conducting strip and the second conducting strip, is equipped with in the cover cap with straining screw complex internal thread, lead wire and pressurization measurement lead wire electric connection.
In the preferred scheme, a limiting step is arranged in the sleeve cap, and the first conducting strip and the second conducting strip are arranged between the limiting step and the end part of the sleeve cap.
In a preferred scheme, the connecting mechanism comprises a plurality of connecting mechanisms, a switch is arranged on a lead of each connecting mechanism, and a measuring head after the leads are gathered is connected with the pressurizing measuring lead.
In the preferred scheme, the device comprises a measuring disc, a switch is fixed on the measuring disc, and a mark is arranged on the measuring disc corresponding to the switch.
In a preferred scheme, a measuring hole is formed in the measuring disc, the measuring head after the leads are gathered is arranged in the measuring hole, and the measuring hole is matched with a measuring probe at the end part of the pressurization measuring lead.
In a preferred scheme, a fixed meter frame is arranged on the measuring disc, and the insulating meter is arranged on the fixed meter frame.
The invention also provides a measuring method of the tension screw insulation measuring device, which comprises the following steps:
step one, removing protective sleeves on all tensioning screws;
numbering the tightening screws;
step three, screwing the sleeve cap on the tensioning screw rod, and pressing down all switches;
fixing the insulation meter on a fixed meter frame, connecting a pressurizing measurement lead with a measuring head, and connecting a grounding measurement lead with a grounding point;
step five, pressurizing the insulation meter to complete the insulation measurement of the tension screw rod connected with the sleeve cap;
step six, if the insulation measurement is unqualified, the measurement of a single or a plurality of groups of tensioning screws is carried out through the opening and closing of a switch;
and seventhly, installing the protective sleeve of the tensioning screw rod.
In a preferred embodiment, in the fourth step, the pressurized measurement lead is connected to the measurement head by inserting the measurement probe of the pressurized measurement lead into the measurement hole.
According to the tension screw insulation measuring device and the measuring method thereof, the sleeve cap is screwed on the tension screw, the second conducting strip is tightly propped against the end part of the tension screw under the action of the spring to be fully contacted, the tension screw, the second conducting strip, the spring, the first conducting strip and the lead are sequentially connected or contacted to realize electrical connection, an insulation meter is conveniently connected with the tension screw, and the measuring efficiency is improved.
Adopt integrated measuring's principle, divide a plurality of tensioning screw to be a set of, once only can measure a plurality of tensioning screw insulating properties, through setting up the switch, can find the tensioning screw that has the problem through subdividing the district or measuring one by one when finding that certain a set of insulation has nonconforming phenomenon.
The device and the operation method have the advantages that the measurement efficiency is high, the measurement times are reduced by 90% in an ideal state, the structure is simple, the operation is convenient, and the corresponding numerical value of the measurement screw can be accurately recorded.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic external view of the connection mechanism;
FIG. 3 is a cross-sectional view of the coupling mechanism;
in the figure: the device comprises an insulating meter 1, a pressurization measurement lead 2, a grounding measurement lead 3, a sleeve cap 4, a lead 5, a first conducting strip 6, a second conducting strip 7, a spring 8, a switch 9, a measuring head 10, a measuring disc 11, a mark 12, a fixed meter frame 13, a limiting step 401 and a measuring hole 1101.
Detailed Description
As shown in fig. 1-3, an insulation measuring device for a tension screw rod, including insulation table 1, insulation table 1 chooses the digital insulation table for use, insulation table 1 is connected with pressurization measurement lead 2 and ground connection measurement lead 3, including coupling mechanism, coupling mechanism includes sleeve cap 4, sleeve cap 4 bottom is equipped with the through-hole that supplies lead 5 to pass, the diameter of through-hole is greater than the diameter of lead 5, be equipped with first conducting strip 6 and second conducting strip 7 in the sleeve cap 4, first conducting strip 6 is connected with lead 5, be equipped with spring 8 between first conducting strip 6 and the second conducting strip 7, spring 8 is electrically conductive material, be equipped with the internal thread with tension screw rod complex in the sleeve cap 4, lead 3 and pressurization measurement lead 2 electric connection.
Through setting up coupling mechanism, can realize with straining screw's high-speed joint, it is concrete, screw up on straining screw with cover cap 4, under spring 8's effect, tightly push up second conducting strip 7 at straining screw tip, make its abundant contact, realize that straining screw, second conducting strip 7, spring 8, first conducting strip 6 and lead wire 5 connect gradually or contact and realize electric connection, make things convenient for insulating table 1 and straining screw to be connected, improve measurement of efficiency.
Preferably, a limiting step 401 is arranged in the cap 4, and the first conducting strip 6 and the second conducting strip 7 are arranged between the limiting step 401 and the end of the cap 4.
The first conductive sheet 6 and the second conductive sheet 7 can be prevented from sliding out of the cap 4 by providing the limit step 401.
Preferably, as shown in fig. 1, the number of the connecting mechanisms is 10, in this embodiment, simultaneous measurement of 10 tensioning screws can be realized, a switch 9 is arranged on a lead 3 of the connecting mechanism, and a measuring head 10 after the lead 3 is gathered is connected with the pressure measurement lead 2.
Through setting up a plurality of coupling mechanism, can measure a plurality of straining screw rods simultaneously, improve measurement of efficiency.
The device comprises a measuring disc 11, a switch 9 is fixed on the measuring disc 11, and a mark 12 is arranged on the measuring disc 11 corresponding to the switch 9.
Be favorable to the fixed to the circuit on the one hand through setting up measuring disk 11, on the other hand can mark switch 9, conveniently realizes switch 9 and cover cap 4 and tensioning screw's correspondence.
The measuring disc 11 is provided with a measuring hole 1101, the measuring head 10 with the gathered lead wires 3 is arranged in the measuring hole 1101, and the measuring hole 1101 is matched with a measuring probe at the end part of the pressurizing measuring lead wire 2.
The quick connection of the pressurized measurement lead 2 to the measuring head 10 is realized by the adaptation of the measurement probe at the end of the pressurized measurement lead 2 to the measurement hole 1101.
And a fixed meter frame 13 is arranged on the measuring disc 11, and the insulation meter 1 is arranged on the fixed meter frame 13. Specifically, the solid meter support 13 is a clamping groove arranged on the measuring disc 11, and the insulating meter 1 is clamped in the clamping groove.
A measuring method of a tension screw insulation measuring device comprises the following steps:
step one, dismantling the protective sleeves on all the tensioning screws.
And step two, numbering the tightening screws, and specifically, recording data every 5 screws in the clockwise direction.
And step three, screwing the sleeve cap 4 on the tensioning screw rod, and pressing down all the switches 9.
Fixing the insulation meter 1 on the fixed meter frame 13, and connecting the pressurization measurement lead 2 with the measuring head 10, specifically, inserting the measurement probe of the pressurization measurement lead 2 into the measurement hole 1101 to connect the pressurization measurement lead 2 with the measuring head 10, and connecting the grounding measurement lead 3 to a grounding point.
And step five, pressurizing the insulation table 1 to finish the insulation measurement of the tension screw rod connected with the sleeve cap 4.
Step six, if the insulation measurement is unqualified, the measurement can be distributed through the switch 9, namely, the measurement of a single or a plurality of groups of tensioning screws is carried out through the opening and closing of the switch 9, the measurement can be carried out in two or five groups, the unqualified screws can be found quickly, and corresponding numbers are recorded.
And seventhly, installing the protective sleeve of the tensioning screw rod.
This device can realize insulating table 1 and tensioning screw's high-speed joint through setting up coupling mechanism, simultaneously, adopts integrated measuring's principle, divides 10 tensioning screw to be a set of, and it is insulating once only to measure 10 tensioning screw, through setting up switch 9, can find problematic tensioning screw through subdividing the district or measure one by one when finding that certain a set of insulation exists nonconforming phenomenon.
The device and the operation method have the advantages that the measurement efficiency is high, the measurement times are reduced by 90% in an ideal state, the structure is simple, the operation is convenient, and the corresponding numerical value of the measurement screw can be accurately recorded.
Claims (8)
1. The utility model provides a take-up screw insulation measurement device, including insulating table (1), insulating table (1) is connected with pressurization measurement lead (2) and ground connection measurement lead (3), a serial communication port, which comprises a connecting mechanism, connecting mechanism includes cover cap (4), cover cap (4) bottom is equipped with the through-hole that supplies lead (5) to pass, be equipped with first conducting strip (6) and second conducting strip (7) in cover cap (4), first conducting strip (6) are connected with lead (5), be equipped with spring (8) between first conducting strip (6) and second conducting strip (7), be equipped with in cover cap (4) with take-up screw complex internal thread, lead (3) and pressurization measurement lead (2) electric connection.
2. A tension screw insulation measuring device according to claim 1, characterized in that a limit step (401) is provided in the cap (4), and the first conducting strip (6) and the second conducting strip (7) are provided between the limit step (401) and the end of the cap (4).
3. A tension screw insulation measuring device according to claim 1, characterized in that the connecting mechanism comprises several, the lead (3) of the connecting mechanism is provided with a switch (9), and the measuring head (10) after the lead (3) is gathered is connected with the pressure measuring lead (2).
4. A tensioning screw insulation measuring device according to claim 3, characterized in that it comprises a measuring disc (11), the switch (9) being fixed to the measuring disc (11), the measuring disc (11) being provided with reference numerals (12) corresponding to the switch (9).
5. A tensioning screw insulation measuring device according to claim 4, characterized in that the measuring disc (11) is provided with a measuring hole (1101), the measuring head (10) with the lead (3) gathered together is arranged in the measuring hole (1101), and the measuring hole (1101) is adapted to a measuring probe pressing the end of the measuring lead (2).
6. A tensioning screw insulation measuring device according to claim 4, characterized in that the measuring plate (11) is provided with a fixed meter stand (13), and the insulation meter (1) is mounted on the fixed meter stand (13).
7. A method for measuring the insulation of a tension screw as in any one of claims 3 to 6, comprising the steps of:
step one, removing protective sleeves on all tensioning screws;
numbering the tightening screws;
step three, screwing the sleeve cap (4) on the tensioning screw rod, and pressing down all the switches (9);
fixing the insulation meter (1) on a fixed meter frame (13), connecting a pressure measurement lead (2) with a measuring head (10), and connecting a grounding measurement lead (3) on a grounding point;
step five, pressurizing the insulation meter (1) to complete the insulation measurement of the tension screw rod connected with the sleeve cap (4);
step six, if the insulation measurement is unqualified, the measurement of a single or a plurality of groups of tensioning screws is carried out through the opening and closing of a switch (9);
and seventhly, installing the protective sleeve of the tensioning screw rod.
8. A method for measuring a tension screw insulation measuring device according to claim 7, characterized in that in step four, the connection of the pressure measuring lead (2) to the measuring head (10) is achieved by inserting the measuring probe of the pressure measuring lead (2) into the measuring hole (1101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632082.1A CN113484548A (en) | 2021-06-07 | 2021-06-07 | Tensioning screw insulation measuring device and measuring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632082.1A CN113484548A (en) | 2021-06-07 | 2021-06-07 | Tensioning screw insulation measuring device and measuring method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113484548A true CN113484548A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110632082.1A Pending CN113484548A (en) | 2021-06-07 | 2021-06-07 | Tensioning screw insulation measuring device and measuring method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799518A (en) * | 2010-02-05 | 2010-08-11 | 贵阳新光电气有限公司 | Online monitoring and grounding protection methods of insulation of generator stator core tightening screw rods |
| CN204694811U (en) * | 2015-06-29 | 2015-10-07 | 中国长江电力股份有限公司 | A kind of Novel stator iron core clamping screw insulation measuring apparatus |
| CN104993265A (en) * | 2015-06-30 | 2015-10-21 | 张家港金海港电线电缆有限公司 | Cable connecting device |
| CN111127865A (en) * | 2020-02-10 | 2020-05-08 | 哈尔滨德利亚电子科技有限公司 | Wireless transmission mode speed sensor for commercial vehicle |
| CN112864667A (en) * | 2021-03-25 | 2021-05-28 | 泰兴市航海电连接器有限公司 | Aviation electric connector with good conductivity |
-
2021
- 2021-06-07 CN CN202110632082.1A patent/CN113484548A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799518A (en) * | 2010-02-05 | 2010-08-11 | 贵阳新光电气有限公司 | Online monitoring and grounding protection methods of insulation of generator stator core tightening screw rods |
| CN204694811U (en) * | 2015-06-29 | 2015-10-07 | 中国长江电力股份有限公司 | A kind of Novel stator iron core clamping screw insulation measuring apparatus |
| CN104993265A (en) * | 2015-06-30 | 2015-10-21 | 张家港金海港电线电缆有限公司 | Cable connecting device |
| CN111127865A (en) * | 2020-02-10 | 2020-05-08 | 哈尔滨德利亚电子科技有限公司 | Wireless transmission mode speed sensor for commercial vehicle |
| CN112864667A (en) * | 2021-03-25 | 2021-05-28 | 泰兴市航海电连接器有限公司 | Aviation electric connector with good conductivity |
Non-Patent Citations (1)
| Title |
|---|
| 李诚 等: "多芯电缆绝缘快速检测", 《电力设备管理》, 30 November 2020 (2020-11-30), pages 74 * |
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Application publication date: 20211008 |