CN107402253B - Detection device and method for crimping and positioning defects of splicing sleeve of power transmission line - Google Patents
Detection device and method for crimping and positioning defects of splicing sleeve of power transmission line Download PDFInfo
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- CN107402253B CN107402253B CN201710430862.1A CN201710430862A CN107402253B CN 107402253 B CN107402253 B CN 107402253B CN 201710430862 A CN201710430862 A CN 201710430862A CN 107402253 B CN107402253 B CN 107402253B
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- splicing sleeve
- detection
- crimping
- support
- compression
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- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 238000002788 crimping Methods 0.000 title claims abstract description 33
- 230000007547 defect Effects 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 39
- 230000006835 compression Effects 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 230000005389 magnetism Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 2
- 238000000605 extraction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/825—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by using magnetic attraction force
Abstract
The invention discloses a device and a method for detecting the crimping and positioning defects of a splicing sleeve of a power transmission line. The method comprises the following steps: s1: calibrating a digital display tension and compression dynamometer; s2: assembling; s3: erecting a bracket; s4: detecting; s5: and (5) repeating the detection for 2-3 times according to the step S4, so that the positioning result is more accurate. The invention has the advantages of simple and reliable structure, convenient operation, high safety and capability of realizing on-site nondestructive detection.
Description
Technical Field
The invention mainly relates to a detection technology of a crimping and positioning defect of a splicing sleeve of a power transmission line, in particular to a detection device and a detection method of the crimping and positioning defect of the splicing sleeve of the power transmission line.
Background
The splicing sleeve is an important connecting hardware fitting of the power transmission line and consists of an aluminum splicing sleeve and a steel splicing sleeve, wherein the steel splicing sleeve is used for splicing a steel anchor and a steel core of an aluminum conductor steel-cored strand and bearing the stress of the steel core of a conductor; the aluminum connecting tube is arranged outside the steel connecting tube and the lead aluminum strand and is used for enabling the aluminum connecting tube to generate plastic deformation through compression joint and enabling the inner surface of the aluminum connecting tube to be tightly combined with the aluminum strand to form friction force to bear the stress of the lead part; when the steel splicing sleeve is used, the steel splicing sleeve is sleeved on the wire steel core to be subjected to crimping and form six crimping planes, so that the positions, corresponding to the steel core, of the steel splicing sleeve are subjected to plastic deformation through crimping and are extruded, and the friction force between the steel splicing sleeve and the steel core is increased. However, as the splicing sleeve belongs to the hidden project of the power transmission line infrastructure construction, the internal defects of the aluminum splicing sleeve of the splicing sleeve, particularly the splicing positioning defects, are difficult to detect on site in a nondestructive mode, so that the phenomena of wire breakage, extraction and the like of the crimping position of a wire clamp occur, and the safe operation of a power grid is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a detection device and a detection method for the crimping and positioning defects of the splicing sleeve of the power transmission line, which have the advantages of simple and reliable structure, convenience in operation and high safety and can realize on-site nondestructive detection.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a detection apparatus for transmission line splicing sleeve crimping location defect, includes the support, the support bottom is equipped with the guide way that is used for the support to remove along the splicing sleeve axial direction that awaits measuring, sets up the cover chamber that extends to the guide way top on the support, the cover intracavity is built-in to be equipped with can follow the vertical movable magnetism of cover chamber and inhale the detection piece.
As a further improvement of the above technical solution:
the magnetic attraction detection part comprises a digital display tension and compression dynamometer and a permanent magnet, the top of the digital display tension and compression dynamometer is connected with the top of the support, and the permanent magnet is installed at the bottom of the digital display tension and compression dynamometer.
The sleeve cavity comprises a vertical strip cavity and a tile-shaped cavity, and the digital display tension and compression dynamometer and the permanent magnet are respectively positioned in the vertical strip cavity and the tile-shaped cavity.
The permanent magnet is a tile-shaped permanent magnet matched with the tile-shaped cavity in shape.
The support includes top cap and symmetrical arrangement and the preceding shell and the back shell of connecting, the top cap is installed at the top of preceding shell and back shell, the guide way sets up in the front of shell and back shell bottom, top cap, preceding shell and back shell enclose jointly and close the shape the cover chamber, the top and the top cap of detecting part are connected to magnetism.
The guide groove is provided with an arc-shaped groove, and two grooves which are in contact with two corners of the splicing sleeve to be tested are formed in the arc-shaped groove.
A detection method for the crimping and positioning defects of a splicing sleeve of a power transmission line is carried out by the detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line, and comprises the following steps:
s1: calibrating a digital display tension and compression dynamometer;
s2: assembling: installing the magnetic attraction detection piece in a sleeve cavity of the bracket;
s3: erecting a bracket: selecting two sections of a splicing sleeve to be detected in a compression joint mode and a non-compression joint area in the middle of the two sections as detection areas, and placing a guide groove of a support at the outer end of the compression joint area at one end of the splicing sleeve to be detected;
s4: and (3) detection: the bracket drives the digital display tension-compression dynamometer and the permanent magnet to move from the outer end to the inner end of the compression joint area at one end of the aluminum connecting pipe, the attractive force at each point in the compression joint area is measured, and if a sudden change of the force value is found at a certain position, the position is the position of one end of the steel connecting pipe; detecting the crimping area at the other end and the non-crimping area in the middle by the same method;
s5: and (5) repeating the detection for 2-3 times according to the step S4, so that the positioning result is more accurate.
Compared with the prior art, the invention has the advantages that:
the detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line comprises a support, wherein a guide groove used for moving the support along the axial direction of the splicing sleeve to be detected is formed in the bottom of the support, a sleeve cavity extending to the upper side of the guide groove is formed in the support, and a magnetic suction detection piece capable of moving vertically along the sleeve cavity is arranged in the sleeve cavity. When the device is used, the magnetic attraction detection piece is arranged in the sleeve cavity, then the splicing sleeve to be detected is positioned in the guide groove at the bottom of the support, the support is moved to drive the magnetic attraction detection piece to move along the axial direction of the splicing sleeve to be detected, the attraction force at each point in the detection area is measured, and if a force value at a certain position has an abrupt change, the position is the position of one end of the steel splicing sleeve. In the structure, the magnetic attraction principle is utilized for detection, the field nondestructive detection of hidden engineering can be realized, the phenomena of disconnection, extraction and the like of a compression joint part can not occur, the safe operation of a power grid is ensured, and the structure is also very simple and reliable. The detection method for the crimping and positioning defects of the splicing sleeve of the power transmission line is carried out by using the detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line, so that the detection method has the corresponding technical effect of the detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line.
Drawings
Fig. 1 is a schematic structural view of a detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line.
Fig. 2 is a schematic side view of the detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line.
Fig. 3 is a schematic view of the using state of the detection device for the crimping and positioning defects of the splicing sleeve of the power transmission line.
Fig. 4 is a flow chart of the method for detecting the crimping positioning defect of the power transmission line connecting tube.
The reference numerals in the figures denote:
1. a support; 11. a guide groove; 111. a groove; 12. a sleeve cavity; 121. a vertical bar cavity; 122. a tile-shaped cavity; 13. a top cover; 14. a front housing; 15. a rear housing; 2. a magnetic attraction detection piece; 21. a digital display tension and compression dynamometer; 22. permanent strong magnet.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
Fig. 1 to 3 show an embodiment of the detection device for detecting the crimping and positioning defects of the splicing sleeve of the power transmission line, which comprises a support 1, wherein a guide groove 11 for moving the support 1 along the axial direction of the splicing sleeve to be detected is formed in the bottom of the support 1, a sleeve cavity 12 extending above the guide groove 11 is formed in the support 1, and a magnetic attraction detection piece 2 capable of moving vertically along the sleeve cavity 12 is arranged in the sleeve cavity 12. When the device is used, the magnetic detection part 2 is arranged in the sleeve cavity 12, then the splicing sleeve to be detected is positioned in the guide groove 11 at the bottom of the support 1, the support 1 is moved to drive the magnetic detection part 2 to move along the axial direction of the splicing sleeve to be detected, the attractive force at each point in a detection area is measured, and if a force value at a certain position has an abrupt change, the position is the position of one end of the steel splicing sleeve. In the structure, the magnetic attraction principle is utilized for detection, the field nondestructive detection of hidden engineering can be realized, the phenomena of disconnection, extraction and the like of a compression joint part can not occur, the safe operation of a power grid is ensured, and the structure is also very simple and reliable.
In this embodiment, magnetism is inhaled and is detected piece 2 and include that digital display draws and presses dynamometer 21 and forever strong magnet 22, and digital display draws and presses dynamometer 21's top and support 1 top to be connected, and forever strong magnet 22 installs and draws and press dynamometer 21 bottom at the digital display. In the structure, the digital display tension and compression dynamometer 21 and the permanent magnet 22 are driven by the bracket 1 to slowly move from one end above the aluminum splicing sleeve area to be detected to the other end, the attractive force at each point in the detection area is measured, if a sudden change of the force value is found at a certain position, the position is the position of one end of the steel splicing sleeve, and the operation is very simple.
In this embodiment, the sleeve cavity 12 includes a vertical bar cavity 121 and a tile-shaped cavity 122, and the digital display tension and compression dynamometer 21 and the permanent magnet 22 are respectively located in the vertical bar cavity 121 and the tile-shaped cavity 122. In this structure, the dimensions of the vertical bar cavity 121 and the tile-shaped cavity 122 are slightly larger than those of the digital tension and compression dynamometer 21 and the permanent magnet 22, so that the digital tension and compression dynamometer 21 and the permanent magnet 22 have a moving space.
In this embodiment, the permanent magnet 22 is configured as a tile-shaped permanent magnet that is shaped to fit the tile-shaped cavity 122. The tile-shaped permanent magnet is arc-shaped and can be matched with the shape of the splicing tube to be detected, so that the magnetic attraction area is increased, and the detection efficiency is improved.
In this embodiment, the bracket 1 includes a top cover 13, a front housing 14 and a rear housing 15, which are symmetrically arranged and connected, the top cover 13 is installed on the top of the front housing 14 and the rear housing 15, the guide groove 11 is disposed on the bottom of the front housing 14 and the rear housing 15, the top cover 13, the front housing 14 and the rear housing 15 together enclose the shape of the sleeve cavity 12, and the top of the magnetic attraction detecting element 2 is connected with the top cover 13. In this structure, set up support 1 into the split type structure that top cap 13, preceding shell 14 and back shell 15 constitute, be convenient for on the one hand the magnetism inhale 2 cases of detection piece adorn in the cover chamber 12, on the other hand also utilizes the shaping.
In this embodiment, the guide groove 11 is provided with an arc-shaped groove, and the arc-shaped groove is provided with two grooves 111 contacting with two corners of the splicing sleeve to be tested. The arrangement of the groove 111 enables two corners of the splicing sleeve to be tested to fall into the groove, so that the splicing sleeve is convenient to position and convenient to axially move of the support 1.
Fig. 1 to 4 show an embodiment of the method for detecting the crimping positioning defect of the power transmission line splicing sleeve, which is performed by the device for detecting the crimping positioning defect of the power transmission line splicing sleeve, and comprises the following steps:
s1: calibrating a digital display tension and compression dynamometer 21;
s2: assembling: the magnetic attraction detection piece 2 is arranged in a sleeve cavity 12 of the bracket 1;
s3: erecting a support 1: selecting two sections of a splicing sleeve to be detected in compression joint and a non-compression joint area in the middle of the two sections as detection areas, and placing a guide groove 11 of a bracket 1 at the outer end of the compression joint area at one end of the splicing sleeve to be detected;
s4: and (3) detection: the bracket 1 drives a digital display tension and compression dynamometer 21 and a permanent magnet 22 to move from the outer end to the inner end of a compression joint area at one end of an aluminum connecting pipe, the attractive force at each point in the compression joint area is measured, and if a sudden change of a force value is found at a certain position, the position is the position of one end of the steel connecting pipe; detecting the crimping area at the other end and the non-crimping area in the middle by the same method;
s5: and (5) repeating the detection for 2-3 times according to the step S4, so that the positioning result is more accurate.
By adopting the method, the magnetic attraction principle is utilized for detection, the field nondestructive detection of the concealed engineering can be realized, the phenomena of disconnection, extraction and the like of a compression joint part can not occur, the safe operation of a power grid is ensured, and the structure is very simple and reliable.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (2)
1. The utility model provides a detection apparatus for transmission line splicing sleeve crimping location defect which characterized in that: including support (1), support (1) bottom is equipped with guide way (11) that are used for support (1) to remove along the splicing sleeve axial direction that awaits measuring, sets up cover chamber (12) that extend to guide way (11) top on support (1), the built-in magnetism that is equipped with in cover chamber (12) can follow the vertical activity of cover chamber (12) is inhaled and is detected piece (2), magnetism is inhaled and is detected piece (2) and is included digital display tension-compression dynamometer (21) and permanent magnet (22), the top of tension-compression dynamometer (21) is connected with support (1) top, permanent magnet (22) are installed in digital display tension-compression dynamometer (21) bottom, cover chamber (12) are including vertical bar chamber (121) and tile shape chamber (122), digital display tension-compression dynamometer (21) and permanent magnet (22) are located vertical bar chamber (121) and tile shape chamber (122) respectively, permanent magnet (22) set up to the tile shape permanent magnet with strong magnet of strong magnet chamber (122) shape adaptation, the tile shape is the arc form forever strong magnet, can with the splicing sleeve form adaptation that awaits measuring, guide way (11) set up the arc wall, set up two recess (111) with two corner contacts of splicing sleeve that awaits measuring on the arc wall, support (1) include preceding shell (14) and back shell (15) of top cap (13) and symmetrical arrangement and connection, shell (14) and back shell (15) the top before top cap (13) are installed, guide way (11) set up shell (14) and back shell (15) bottom in the front, top cap (13), preceding shell (14) and back shell (15) enclose the shape jointly cover chamber (12), the top and top cap (13) of detection piece (2) are connected to magnetism, cut off through the diapire of cover chamber (12) between guide way (11) and forever strong magnet (22).
2. A detection method for the crimping and positioning defects of a splicing sleeve of a power transmission line is characterized by comprising the following steps: the detection device for the crimping positioning defect of the splicing sleeve of the power transmission line, which is disclosed by claim 1, comprises the following steps of:
s1: calibrating a digital display tension and compression dynamometer (21);
s2: assembling: the magnetic attraction detection piece (2) is arranged in a sleeve cavity (12) of the bracket (1);
s3: erecting a support (1): selecting two sections of a splicing sleeve to be detected in a compression joint mode and a non-compression joint area in the middle of the two sections as detection areas, and placing a guide groove (11) of a support (1) at the outer end of the compression joint area at one end of the splicing sleeve to be detected;
s4: and (3) detection: the bracket (1) drives a digital display tension and compression dynamometer (21) and a permanent magnet (22) to move from the outer end to the inner end of a compression joint area at one end of an aluminum connecting pipe, the attractive force at each point in the compression joint area is measured, and if a sudden change of a force value is found at a certain position, the position is the position of one end of the steel connecting pipe; detecting the crimping area at the other end and the non-crimping area in the middle by the same method;
s5: and (5) repeating the detection for 2-3 times according to the step S4, so that the positioning result is more accurate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710430862.1A CN107402253B (en) | 2017-06-09 | 2017-06-09 | Detection device and method for crimping and positioning defects of splicing sleeve of power transmission line |
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| CN201710430862.1A CN107402253B (en) | 2017-06-09 | 2017-06-09 | Detection device and method for crimping and positioning defects of splicing sleeve of power transmission line |
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| CN107402253A CN107402253A (en) | 2017-11-28 |
| CN107402253B true CN107402253B (en) | 2021-02-05 |
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| CN2702308Y (en) * | 2004-05-28 | 2005-05-25 | 张俊峰 | Magnetic iron content analyzer |
| JP4415041B2 (en) * | 2007-10-10 | 2010-02-17 | 三菱電機ビルテクノサービス株式会社 | Rope inspection method |
| CN203116890U (en) * | 2013-01-18 | 2013-08-07 | 上海自动化仪表股份有限公司 | A measuring device for measuring a relation between the distance between a magnet and an attracted object and the magnetic field force |
| CN103713041B (en) * | 2013-12-06 | 2016-11-02 | 中铁宝桥（南京）有限公司 | The depth measurement device of ferrimagnet surface opening microdefect and measuring method |
| JP6305779B2 (en) * | 2014-02-03 | 2018-04-04 | 株式会社共和電業 | Screw looseness detection device and screw looseness monitoring system |
| CN106019385B (en) * | 2016-05-20 | 2019-03-29 | 浙江大学 | Steel pipe Position automatic detection device in cable splice pipe |
| CN105953756B (en) * | 2016-05-20 | 2019-02-05 | 浙江大学 | Steel pipe positioning detecting device in cable splice pipe based on synchronous belt driving |
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