CN116682625A - Insulator chain R-shaped locking pin capable of monitoring loosening displacement, monitoring and manufacturing method - Google Patents
Insulator chain R-shaped locking pin capable of monitoring loosening displacement, monitoring and manufacturing method Download PDFInfo
- Publication number
- CN116682625A CN116682625A CN202310968550.1A CN202310968550A CN116682625A CN 116682625 A CN116682625 A CN 116682625A CN 202310968550 A CN202310968550 A CN 202310968550A CN 116682625 A CN116682625 A CN 116682625A
- Authority
- CN
- China
- Prior art keywords
- sensing element
- pressure sensing
- flexible pressure
- locking pin
- shaped locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 56
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 47
- 238000012544 monitoring process Methods 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 13
- 238000003745 diagnosis Methods 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 8
- 239000004734 Polyphenylene sulfide Substances 0.000 description 7
- 229920000069 polyphenylene sulfide Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
- H01B17/10—Fastening of insulator to support, to conductor, or to adjoining insulator by intermediate link
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides an insulator chain R type locking pin that can monitor loose displacement, monitoring and manufacturing method, R type locking pin includes: the main control circuit device, the operation ring, the first pin leg and the second pin leg, wherein a hump is arranged on the first pin leg; a plurality of flexible pressure sensing elements are arranged on the first pin leg, the first flexible pressure sensing element (1) is arranged between the operation ring and the hump, and the pressure value PA at the point A of the position is collected; the second flexible pressure sensing element (2) is arranged at the top of the hump, and acquires a pressure value PB of a point B; the third flexible pressure sensing element (3) is arranged between the hump and the end part of the first pin leg, and is used for collecting a pressure value PC at a point C; the flexible pressure sensing element is connected with the main control circuit device, and the main control circuit sends the collected point position pressure to the monitoring background in a wireless mode. The R-shaped locking pin of the insulator chain can monitor and early warn the loosening displacement of the R-shaped locking pin according to the pressure change characteristic during the loosening displacement.
Description
Technical Field
The application relates to the technical field of power transmission line insulation, in particular to an insulator chain R-shaped locking pin capable of monitoring loosening displacement, and a monitoring and manufacturing method thereof.
Background
Although the insulator locking pin of the power transmission line is small, the effect is not general, and if the locking pin falls off, the serious consequence of falling off of the insulator string can be caused. At present, the R-shaped locking pin is a common locking device for high-voltage line insulator strings, and the locking pin is easy to loose and fall off under the influence of environmental vibration such as external strong wind and the like. The traditional mode mainly confirms whether the locking pin is loosened and falls off through manual climbing inspection, and the mode is time-consuming and labor-consuming; whether the locking pin is loosened and falls off is confirmed through an unmanned aerial vehicle photographing image recognition method, but the method is affected by photographing angles, light rays and the like, omission or misjudgment is easy to occur, and timeliness is not achieved. There is also research to monitor the state of R type locking pin through pressure sensor and confirm whether the locking pin takes place to loosen and drop, and this mode can only realize the monitoring that drops of pin, fails to perceive the not hard up condition of pin, and the security risk when dropping is greater than the pin and becomes flexible far away, has the potential safety hazard.
The technical scheme in the prior art can not sense the loose displacement state of the R-shaped locking pin of the insulator string in real time, so that the technical problems of untimely state sensing and inconvenience in intelligent operation and maintenance are caused.
Prior art document 1 (CN 211742800U) discloses an insulator chain R-shaped locking pin based on an RFID tag, the RFID tag cannot be damaged in the locking process of the locking pin, and when the locking pin slides or falls off, the barb and the strip-shaped body can bend and move, and then damage the RFID tag, so that the antenna is disabled, and whether the locking pin loosens or falls off can be detected in real time by measuring the RFID tag in real time. The tag identification method has the defects that the reader-writer cannot identify the tag, and the conditions except the fact that the tag loosens or falls off possibly exist in the unidentified factors, such as damage to the tag caused by wind and sun exposure under long-term outdoor conditions, the identification accuracy is not enough, the operation, maintenance and repair work is easily misled, and the workload is increased. The R-shaped locking pin is only qualitatively judged to be in a falling (or loosening) state and normal state, the specific position of the loosening displacement of the locking pin cannot be quantitatively judged, namely when RFID label information cannot be received, the R-shaped locking pin can fall off, a good early warning effect cannot be achieved, potential safety hazards are large, and the whole sensing device is hung on the head of the R-shaped locking pin, so that the integration level is low.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides the R-shaped locking pin which can monitor the loosening displacement and is designed based on the pressure sensor, so that the real-time sensing of the loosening displacement state of the R-shaped locking pin of the insulator string is realized, and the intellectualization and the instantaneity of sensing and the timeliness of operation and maintenance are improved.
The application adopts the following technical scheme. The first aspect of the application provides an insulator string R-shaped locking pin capable of monitoring loose displacement, comprising: the main control circuit device, the operation ring, the first pin leg and the second pin leg, wherein a hump is arranged on the first pin leg; the first pin leg is provided with a plurality of flexible pressure sensing elements, and the plurality of flexible pressure sensing elements comprise a first flexible pressure sensing element, a second flexible pressure sensing element and a third flexible pressure sensing element;
the first flexible pressure sensing element is arranged between the operation ring and the hump, the position is marked as a point A, and the first flexible pressure sensing element acquires a pressure value PA applied to the point A; the second flexible pressure sensing element is arranged at the top of the hump, the position is marked as a point B, and the second flexible pressure sensing element acquires a pressure value PB applied to the point B; the third flexible pressure sensing element is arranged between the hump and the end part of the first pin leg, the position is marked as a point C, and the third flexible pressure sensing element collects a pressure value PC applied to the point C;
each flexible pressure sensing element is connected with the main control circuit device respectively and is used for sending the collected pressure value to the main control circuit device, so that the main control circuit device sends the pressure value collected by each flexible pressure sensing element to the monitoring background in a wireless mode.
Preferably, under normal conditions, the contact position of the R-shaped locking pin and the insulator ball head is point a, the pressure measured by the first flexible pressure sensing element at the point a is pa=a, when the R-shaped locking pin is loosely displaced to point B, the pressure measured by the second flexible pressure sensing element is pb=b, when the R-shaped locking pin is loosely displaced to point C, the pressure measured by the third flexible pressure sensing element is pc=c, and the magnitude relation among the three is: a < b, b > c, a < c.
Preferably, a plurality of grooves are provided on the first pin leg, and the first flexible pressure sensing element, the second flexible pressure sensing element, and the third flexible pressure sensing element are each disposed within a respective one of the plurality of grooves.
Preferably, the first flexible pressure sensing element, the second flexible pressure sensing element and the third flexible pressure sensing element are each less than 0.5mm thick; the depth of the groove was 0.5mm.
Preferably, the first flexible pressure sensing element, the second flexible pressure sensing element and the third flexible pressure sensing element are fixed with the corresponding grooves by gluing through silica gel glue; stainless steel foil pieces are arranged on the upper covers of the grooves, and the stainless steel foil pieces are welded and fixed with the grooves through locking pins.
Preferably, the main control circuit device includes: the main control unit and the antenna are connected;
the common end COM of the first flexible pressure sensing element, the second flexible pressure sensing element and the third flexible pressure sensing element is connected to the grounding point of the main control circuit device through a lead; the signal ends of the first flexible pressure sensing element, the second flexible pressure sensing element and the third flexible pressure sensing element are connected to the main control unit, and the main control unit is connected with the monitoring background through the antenna.
Preferably, the wire is an enameled wire with the diameter of 0.1mm, a wire groove with the diameter of 0.15mm is formed in the first pin leg, the enameled wire is arranged in the wire groove, and a silica gel glue is arranged at the opening of the wire groove for sealing.
Preferably, the circuit board of the main control circuit device integrally adopts three-proofing paint for protection treatment, the circuit board is arranged in the electromagnetic shielding cover and fixed on the inner wall of the electromagnetic shielding cover, a wireless communication signal through window is arranged on the electromagnetic shielding cover, and the antenna transmits communication signals outwards through the wireless communication signal through window.
Preferably, a plastic housing is provided outside the electromagnetic shield, said plastic housing being made of PPS material.
Preferably, the main control circuit device is fixed on the head of the R-shaped locking pin through a buckle.
Preferably, at least one flexible pressure sensing element is also provided between the third flexible pressure sensing element and the first pin leg.
Preferably, a flexible pressure sensing element is provided on the second pin leg in correspondence of the first pin leg.
The second aspect of the application provides a method for monitoring and diagnosing loosening displacement of an R-shaped locking pin of an insulator string, which is based on the R-shaped locking pin of the insulator string in the first aspect of the application, and is characterized by comprising the following steps:
step 1, inputting pressure values a, b and c, wherein the pressure value a refers to that the contact part of an R-shaped locking pin and an insulator ball head is an A point under normal conditions, and the pressure measured by a flexible pressure sensing element at the A point is PA=a; the pressure value B refers to the pressure measured by the flexible pressure sensing element when the R-shaped locking pin is loosely displaced to the point B, namely PB=b; the pressure value C refers to the magnitude relation among a, b and C of the pressure measured by the flexible pressure sensing element when the R-shaped locking pin is loosely displaced to the point C, wherein the magnitude relation is as follows: a < b, b > c, a < c;
step 2, judging whether the R-shaped locking pin is positioned at a normal position, namely whether the contact part of the R-shaped locking pin and the bulb of the insulator is an A point or not, and expressing the contact part by the following formula,
，
if the output is normal, ending the diagnosis; otherwise, entering a step 3;
step 3, judging whether the contact part of the R-shaped locking pin and the bulb of the insulator is a point B, and expressing the contact part by the following formula,
，
if the first-level early warning is output, ending the diagnosis; otherwise, entering a step 4;
step 4, judging whether the contact part of the R-shaped locking pin and the bulb of the insulator is a C point or not, and expressing the contact part by the following formula,
，
if the second-level early warning is output, ending the diagnosis; otherwise, enter step 5;
step 5, judging whether the R-shaped locking pin is already fallen off, and expressing the R-shaped locking pin by the following formula,
，
if the output is already dropped, ending the diagnosis; otherwise, outputting the abnormal R-shaped locking pin.
The third aspect of the application provides a method for manufacturing an insulator chain R-shaped locking pin capable of monitoring loosening displacement, which comprises the following steps:
step 1, grooves with set depth are formed in a plurality of positions on the surface of a first pin leg of an R-shaped locking pin;
step 2, arranging a wire slot with a set depth on the first pin leg for connecting and wiring the flexible pressure sensing element and the main control circuit device;
step 3, embedding a flexible pressure sensing element in each groove, bonding and fixing the flexible pressure sensing element, and connecting the flexible pressure sensing element with a main control circuit device through a wire;
step 4, sealing the groove for protecting the flexible pressure sensing element in the groove;
and 5, packaging the main control circuit device in the shell and fixing the main control circuit device at the head part of the R-shaped locking pin.
Compared with the prior art, the insulator chain R-shaped locking pin with the loosening displacement monitoring capability integrates the wireless pressure sensing device and the R-shaped locking pin, and the pressure change condition of a special point position when the R-shaped locking pin is in loosening displacement is determined through the linear flexible pressure sensing element, so that monitoring and early warning of multiple stages when the R-shaped locking pin is in loosening displacement are realized, reference basis is provided for operation and maintenance personnel to take measures in time, hidden danger is eliminated in the first time before the R-shaped locking pin falls off, and operation safety of a power transmission line is ensured.
Drawings
FIG. 1 is a block diagram of an R-lock pin designed based on a pressure sensor to monitor loosening displacement in the present application;
FIG. 2 is a circuit diagram of an insulator string R-lock pin with loose displacement monitoring capability;
FIG. 3 is a flow chart of a method for monitoring and diagnosing loosening displacement of an R-shaped locking pin of an insulator string;
fig. 4 is a method for manufacturing an R-type locking pin of an insulator string with loosening displacement monitoring capability.
In the figure:
1-a first flexible pressure sensing element;
2-a second flexible pressure sensing element;
3-a third flexible pressure sensing element;
4-R type locking pins;
5-a master control circuit device;
6, conducting wires;
7-a circuit board;
8-an electromagnetic shielding cover;
9-a wireless communication signal pass-through window;
10-a shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. The described embodiments of the application are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are within the scope of the present application.
As shown in fig. 1 and 2, embodiment 1 of the present application provides an R-type locking pin 4 of an insulator string with loosening displacement monitoring capability, comprising: the device comprises a main control circuit device, an operation ring, a first pin leg and a second pin leg, wherein a hump is arranged on the first pin leg, and a plurality of flexible pressure sensing elements are arranged on the first pin leg.
In a preferred but non-limiting embodiment of the application, the plurality of flexible pressure sensing elements comprises a first flexible pressure sensing element 1, a second flexible pressure sensing element 2, a third flexible pressure sensing element 3. Namely, three flexible pressure sensing elements are arranged on the first pin leg, the first flexible pressure sensing element 1 is arranged between the operation ring and the hump, the position is marked as a point A, and the first flexible pressure sensing element 1 acquires a pressure value PA applied to the point A; the second flexible pressure sensing element 2 is arranged at the top of the hump, the position is marked as a point B, and the second flexible pressure sensing element 2 acquires a pressure value PB applied to the point B; the third flexible pressure sensing element 3 is arranged between the hump and the end of the first leg, this position being noted as point C, the third flexible pressure sensing element 3 acquiring a pressure value PC applied to the point C.
It is noted that, under normal conditions, the contact position between the R-type locking pin and the insulator ball head is point a, the pressure measured by the flexible pressure sensing element 1 at point a is pa=a, when the R-type locking pin is loosely displaced to point B, the pressure measured by the flexible pressure sensing element 2 is pb=b, when the R-type locking pin is loosely displaced to point C, the pressure measured by the flexible pressure sensing element 3 is pc=c, and the magnitude relation among the three is: a < b, b > c, a < c.
Compared with the prior art, the insulator chain R-shaped locking pin provided by the embodiment 1 of the application has the beneficial technical effects that the R-shaped locking pin can monitor and early warn the loosening displacement of the R-shaped locking pin according to the pressure change characteristic during the loosening displacement.
It is noted that it is within the scope of the application for one skilled in the art to obtain a flexible sensor by the disclosed approach to practice the application. Because the R-shaped locking pin is not large in size, has a thickness and a width of millimeter, and has an arc-shaped surface, it is not very suitable to use a non-flexible pressure sensor integrated as represented by prior art document 1. In a further preferred but non-limiting embodiment of the application, therefore, a plurality of grooves are provided on the first pin leg, the first flexible pressure sensing element 1, the second flexible pressure sensing element 2 and the third flexible pressure sensing element 3 being respectively provided within respective ones of the plurality of grooves.
Still further, the thickness of the first flexible pressure sensing element 1, the second flexible pressure sensing element 2 and the third flexible pressure sensing element 3 is less than 0.5mm; the arc surface of the locking pin is grooved by 0.5mm, namely the depth of the groove for installing the third flexible pressure sensing element is 0.5mm; the first flexible pressure sensing element 1, the second flexible pressure sensing element 2 and the third flexible pressure sensing element 3 are embedded in the grooves, and can be tightly attached and integrated with the locking pin due to the flexibility of the locking pin, and the strength of the locking pin is hardly affected.
Compared with the prior art, the application designs the linear multipolar pressure sensing monitoring device by utilizing the flexible pressure sensing element and combining the R-shaped locking pin structure, namely designs the position of the pressure sensing unit according to a plurality of typical points of loosening of the R-shaped locking pin, and realizes the monitoring of loosening displacement of the R-shaped locking pin. The technical problems in the prior art are solved by the technical scheme of the application.
In a further preferred but non-limiting embodiment of the application, the first flexible pressure sensing element 1, the second flexible pressure sensing element 2 and the third flexible pressure sensing element 3 are adhesively secured with the respective grooves by means of a glue of silicone; stainless steel foil sheets are arranged on the upper covers of the grooves, and the stainless steel foil sheets are welded and fixed with the locking pins. As one of the beneficial technical effects obtained by the application, the method is more reliable, and other methods such as gluing and the like are easy to damage, misplace and the like in the moving process of the locking pin, so that the sensing measurement is influenced.
In a preferred but non-limiting embodiment of the application, the master circuit means comprises: the main control unit, the antenna, the power supply, the peripheral circuit, the circuit board 7, the electromagnetic shielding cover 8 and the shell 10.
The common end COM of the first flexible pressure sensing element 1, the second flexible pressure sensing element 2 and the third flexible pressure sensing element 3 is connected to a grounding point of the main control circuit device through a lead 6; the signal ends of the first flexible pressure sensing element 1, the second flexible pressure sensing element 2 and the third flexible pressure sensing element 3 are connected to a main control unit of the main control circuit device and used for sending the acquired pressure value to the main control unit, and the main control unit sends the pressure value to a monitoring background in real time through an antenna.
Further, the wire 6 is an enameled wire with a diameter of 0.1mm, a wire groove, preferably but not limited to a wire groove with a diameter of 0.15mm, is arranged on the first pin leg, the enameled wire is arranged in the wire groove, and the opening of the wire groove is sealed by silica gel glue. The connecting wire between the flexible pressure sensing element and the main control circuit device is also embedded into the locking pin for integration, and the strength of the locking pin is hardly influenced due to the fact that the wire slot is small and shallow.
In a further preferred but non-limiting embodiment, the circuit board 7 is integrally protected by three-proofing paint, is arranged in the electromagnetic shielding cover 8 and is fixed on the electromagnetic shielding cover 8 by screws, one surface of the electromagnetic shielding cover 8 is provided with a wireless communication signal through window 9, the antenna sends communication signals outwards through the wireless communication signal through window 9, and the through window 9 is in a grid shape, so that power frequency electromagnetic interference near a high-voltage line can be shielded, and wireless communication of data transmission is not affected.
The plastic shell 10 made of PPS (Polyphenylene sulfide ) material is arranged on the outer side of the electromagnetic shielding cover 8, the plastic shell 10 is made of special engineering plastic PPS with excellent comprehensive performance, and the plastic shell has the characteristics of excellent high temperature resistance, corrosion resistance, radiation resistance, flame retardance, balanced physical and mechanical properties, excellent dimensional stability, excellent electrical property (insulation) and the like, and is very suitable for the outdoor severe environment of a high-voltage transmission line.
As shown in fig. 3, embodiment 2 of the present application provides a method for monitoring and diagnosing loosening displacement of R-shaped locking pins of an insulator string, comprising the following steps:
the loosening displacement of the R-shaped locking pin can be approximately divided into three stages, wherein the position of the flexible pressure sensing element 1 is set as the point A, the position of the flexible pressure sensing element 2 is set as the point B, the position of the flexible pressure sensing element 3 is set as the point C, the first stage of the loosening displacement of the R-shaped locking pin is A to B, the second stage is B to C, and finally the falling-off of the R-shaped locking pin is the third stage.
Step 1, inputting pressure values a, b and c, wherein the pressure value a refers to that the contact part of an R-shaped locking pin and an insulator ball head is an A point under normal conditions, and the pressure measured by a flexible pressure sensing element 1 at the A point is PA=a; the pressure value B refers to the pressure measured by the flexible pressure sensing element 2 when the R-shaped locking pin is loosely displaced to the point B, and PB=b; the pressure value C refers to the magnitude relation among a, b and C of the pressure measured by the flexible pressure sensing element 3 when the R-shaped locking pin is loosely displaced to the point C, wherein the magnitude relation is as follows: a < b, b > c, a < c.
Step 2, judging whether the R-shaped locking pin is positioned at a normal position, namely whether the contact part of the R-shaped locking pin and the bulb of the insulator is an A point or not, and expressing the contact part by the following formula,
，
if the output is normal, ending the diagnosis; otherwise, entering a step 3;
step 3, judging whether the contact part of the R-shaped locking pin and the bulb of the insulator is a point B, and expressing the contact part by the following formula,
，
if the first-level early warning is output, ending the diagnosis; otherwise, entering a step 4;
step 4, judging whether the contact part of the R-shaped locking pin and the bulb of the insulator is a C point or not, and expressing the contact part by the following formula,
，
if the second-level early warning is output, ending the diagnosis; otherwise, enter step 5;
step 5, judging whether the R-shaped locking pin is already fallen off, and expressing the R-shaped locking pin by the following formula,
，
if the output is already dropped, ending the diagnosis; otherwise, outputting the abnormal R-shaped locking pin.
As shown in fig. 4, embodiment 3 of the present application provides a method for manufacturing an R-type locking pin of an insulator string with loose displacement monitoring capability, comprising the steps of:
step 1, grooves with set depths are formed in a plurality of positions on the surface of a first pin leg of an R-shaped locking pin.
In a preferred but non-limiting embodiment, the groove depth is 0.5mm; the number of the grooves is three, the first groove is arranged between the operation ring and the hump, and the position is marked as point A; the second groove is arranged at the top of the hump, and the position is marked as a point B; a third groove is provided between the hump and the end of the first leg, this position being designated as point C.
And 2, arranging a wire slot with a set depth on the first pin leg for connecting and wiring the flexible pressure sensing element and the main control circuit device.
In a preferred but non-limiting embodiment, the wire grooves are 0.15mm deep, it being understood that the small and shallow grooves have little effect on the locking pin strength.
And 3, embedding a flexible pressure sensing element in each groove, bonding and fixing the flexible pressure sensing element, and connecting the flexible pressure sensing element with a main control circuit device through a wire.
In a preferred but non-limiting embodiment, a glue of silica gel is applied around the flexible pressure sensing element for adhesive fixation. It is worth noting that as one of the beneficial effects of the application, the connecting wire between the flexible pressure sensing element and the main control circuit device is also embedded into the locking pin for integration, and the small and shallow wire slot has almost no influence on the strength of the locking pin. The connecting wire can be an enameled wire with the diameter of 0.1mm, is arranged in a wire slot with the diameter of 0.15mm, and is sealed by silica gel glue.
And 4, sealing the groove for protecting the flexible pressure sensing element in the groove.
In a preferred but non-limiting embodiment, the groove is sealed with a stainless steel foil and welded with an R-shaped locking pin; it is noted that, as one of the beneficial effects of the present application, compared with other sealing methods, the sealing method is more reliable, and other methods such as gluing are easy to damage, misplacement, etc. during the movement of the locking pin, so as to affect the sensing measurement.
And 5, packaging the main control circuit device in the shell 10 and fixing the main control circuit device on the head part of the R-shaped locking pin.
In a preferred but non-limiting embodiment, the circuit board 7 is integrally protected by three-proofing paint, and can be fixed on the electromagnetic shielding cover 8 by screws, one side of the electromagnetic shielding cover 8 is provided with a wireless communication signal through window 9 which is in a grid shape, so that the circuit board can shield power frequency electromagnetic interference near a high-voltage line and does not influence wireless communication of data transmission.
The plastic shell 10 prepared from PPS (Polyphenylene sulfide ) material is arranged on the outer side of the electromagnetic shielding cover 8, and the plastic shell 10 is made of special engineering plastic PPS with excellent comprehensive performance, has the characteristics of excellent high temperature resistance, corrosion resistance, radiation resistance, flame retardance, balanced physical and mechanical properties, excellent dimensional stability, excellent electrical property (insulation) and the like, and is very suitable for the outdoor severe environment of a high-voltage transmission line.
Further, the main control circuit device 5 can be conveniently fixed at the head of the R-shaped locking pin in a buckling manner.
The embodiment 4 of the application provides an insulator chain R-shaped locking pin with loosening displacement monitoring capability. A fourth flexible pressure sensing element is also provided between the third flexible pressure sensing element and the first pin leg, which is different from embodiment 1. It can be appreciated that the addition of the fourth flexible pressure sensing element can make a more detailed determination of the pre-warning information. The second flexible pressure sensing element is used for indicating that the locking pin is loosened, the third flexible pressure sensing element is used for indicating that the locking pin is seriously loosened, and the fourth flexible pressure sensing element is used for indicating that the locking pin is about to fall off.
The embodiment 5 of the application provides an insulator chain R-shaped locking pin with loosening displacement monitoring capability. The difference from embodiment 1 is that the flexible pressure sensing element corresponding to the first pin leg is arranged on the second pin leg, the loosening condition of the locking pin is more accurately identified through combined monitoring, and when one pressure sensor is abnormal, the position of the locking pin can be judged through the data of the other pressure sensor corresponding to the point position, so that misjudgment is avoided, misleading is caused, and unnecessary trouble is brought.
Furthermore, the two conditions of single pin leg and double pin leg combination are set with the criterion, and the criterion of comparison of two groups of sensing data can be added to improve the judgment accuracy under the condition of single leg and foot combination monitoring similar to the bottom book.
It is noted that the various embodiments of the present application may be implemented in combination and are within the scope of the present application, such as, but not limited to, having 4 flexible pressure sensing elements, or more flexible pressure sensing elements, on each of the first and second legs.
Compared with the prior art, the R-shaped locking pin with the loosening displacement monitoring capability for the insulator string has the advantages that the wireless pressure sensing device is integrated with the R-shaped locking pin, the monitoring and early warning of multiple stages when the R-shaped locking pin is in loosening displacement are realized through the linear flexible pressure sensing element based on the pressure change condition of a special point position when the R-shaped locking pin is in loosening displacement, reference is provided for operation and maintenance personnel to take measures in time, hidden danger is eliminated in the first time before the R-shaped locking pin falls off, and the operation safety of a power transmission line is ensured.
The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the application without departing from the spirit and scope of the application, which is intended to be covered by the claims.
Claims (14)
1. An insulator string R-lock pin for monitoring loose displacement, comprising: the main control circuit device, the operation ring, the first pin leg and the second pin leg are respectively connected with the operation ring, and a hump is arranged on the first pin leg; the method is characterized in that:
a plurality of flexible pressure sensing elements are arranged on one side, away from the second pin leg, of the first pin leg, and each flexible pressure sensing element comprises a first flexible pressure sensing element (1), a second flexible pressure sensing element (2) and a third flexible pressure sensing element (3);
the first flexible pressure sensing element (1) is arranged between the operation ring and the hump, the position of a first pin leg where the first flexible pressure sensing element (1) is positioned is marked as a point A, and the first flexible pressure sensing element (1) acquires a pressure value PA applied to the point A; the second flexible pressure sensing element (2) is arranged at the top of the hump, the position of the first pin leg where the second flexible pressure sensing element (2) is positioned is marked as a point B, and the second flexible pressure sensing element (2) acquires a pressure value PB applied to the point B; the third flexible pressure sensing element (3) is arranged between the hump and the end part of the first pin leg, the position of the first pin leg where the third flexible pressure sensing element (3) is positioned is marked as a point C, and the third flexible pressure sensing element (3) acquires a pressure value PC applied to the point C;
each flexible pressure sensing element is connected with the main control circuit device respectively and is used for sending the collected pressure value to the main control circuit device, so that the main control circuit device sends the pressure value collected by each flexible pressure sensing element to the monitoring background in a wireless mode.
2. The insulator string R-shaped locking pin for monitoring loose displacement of claim 1, wherein:
under normal conditions, the contact part of the R-shaped locking pin and the insulator ball head is an A point, the pressure measured by a first flexible pressure sensing element (1) at the A point is PA=a, when the R-shaped locking pin is loosely displaced to a B point, the pressure measured by a second flexible pressure sensing element (2) is PB=b, when the R-shaped locking pin is loosely displaced to a C point, the pressure measured by a third flexible pressure sensing element (3) is PC=c, and the magnitude relation among the three is: a < b, b > c, a < c.
3. The insulator string R-shaped locking pin for monitoring loose displacement of claim 1, wherein:
a plurality of grooves are formed in the first pin leg, and the first flexible pressure sensing element (1), the second flexible pressure sensing element (2) and the third flexible pressure sensing element (3) are respectively arranged in corresponding grooves in the plurality of grooves.
4. An insulator string R-shaped locking pin for monitoring loose displacement as claimed in claim 3, wherein:
the thicknesses of the first flexible pressure sensing element (1), the second flexible pressure sensing element (2) and the third flexible pressure sensing element (3) are all smaller than 0.5mm; the depth of the groove was 0.5mm.
5. The insulator string R-shaped locking pin for monitoring loose displacement of claim 4, wherein:
the first flexible pressure sensing element (1), the second flexible pressure sensing element (2) and the third flexible pressure sensing element (3) are fixed with the corresponding grooves through glue by silica gel; stainless steel foil pieces are arranged on the upper covers of the grooves, and the stainless steel foil pieces are welded and fixed with the grooves through locking pins.
6. The insulator string R-shaped locking pin for monitoring loose displacement of claim 1, wherein:
the master control circuit device includes: the main control unit and the antenna are connected;
the common end COM of the first flexible pressure sensing element (1), the second flexible pressure sensing element (2) and the third flexible pressure sensing element (3) is connected to the grounding point of the main control circuit device through a lead (6); the signal ends of the first flexible pressure sensing element (1), the second flexible pressure sensing element (2) and the third flexible pressure sensing element (3) are connected to a main control unit, and the main control unit is connected with a monitoring background through an antenna.
7. The insulator string R-shaped locking pin for monitoring loose displacement of claim 6, wherein:
the wire (6) is an enameled wire with the diameter of 0.1mm, a wire groove with the diameter of 0.15mm is formed in the first pin leg, the enameled wire is arranged in the wire groove, and a silica gel glue is arranged at the opening of the wire groove for sealing.
8. The insulator string R-shaped locking pin for monitoring loose displacement of claim 7, wherein:
the master control circuit device further includes: the circuit board (7) and the electromagnetic shielding cover (8), the circuit board (7) is integrally protected by three-proofing paint, the circuit board (7) is arranged in the electromagnetic shielding cover (8) and fixed on the inner wall of the electromagnetic shielding cover (8), the electromagnetic shielding cover (8) is provided with a wireless communication signal through window (9), and the antenna transmits communication signals outwards through the wireless communication signal through window (9).
9. The insulator string R-shaped locking pin for monitoring loose displacement of claim 8, wherein:
a plastic housing (10) is arranged on the outer side of the electromagnetic shielding cover (8), and the plastic housing (10) is made of PPS material.
10. The insulator string R-shaped locking pin for monitoring loose displacement of claim 6, wherein:
the main control circuit device (5) is fixed at the head part of the R-shaped locking pin through a buckle.
11. The insulator string R-shaped locking pin for monitoring loose displacement of claim 1, wherein:
at least one flexible pressure sensing element is also disposed between the third flexible pressure sensing element and the first pin leg.
12. An insulator string R-lock pin for monitoring loose displacement as claimed in claim 1 or 11, wherein:
a flexible pressure sensing element is disposed on the second leg in correspondence with the first leg.
13. An insulator chain R-shaped locking pin loosening displacement monitoring and diagnosing method based on the insulator chain R-shaped locking pin according to any one of claims 1 to 12, comprising the steps of:
step 1, inputting pressure values a, b and c, wherein the pressure value a refers to that the contact part of an R-shaped locking pin and an insulator ball head is an A point under normal conditions, and the pressure measured by a flexible pressure sensing element (1) at the A point is PA=a; the pressure value B refers to the pressure measured by the flexible pressure sensing element (2) when the R-shaped locking pin is loosely displaced to the point B, namely PB=b; the pressure value C refers to the magnitude relation among a, b and C of the pressure measured by the flexible pressure sensing element (3) when the R-shaped locking pin is loosely displaced to the point C, wherein the magnitude relation is as follows: a < b, b > c, a < c;
step 2, judging whether the R-shaped locking pin is positioned at a normal position, namely whether the contact part of the R-shaped locking pin and the bulb of the insulator is an A point or not, and expressing the contact part by the following formula,
，
if the output is normal, ending the diagnosis; otherwise, entering a step 3;
step 3, judging whether the contact part of the R-shaped locking pin and the bulb of the insulator is a point B, and expressing the contact part by the following formula,
，
if the first-level early warning is output, ending the diagnosis; otherwise, entering a step 4;
step 4, judging whether the contact part of the R-shaped locking pin and the bulb of the insulator is a C point or not, and expressing the contact part by the following formula,
，
if the second-level early warning is output, ending the diagnosis; otherwise, enter step 5;
step 5, judging whether the R-shaped locking pin is already fallen off, and expressing the R-shaped locking pin by the following formula,
，
if the output is already dropped, ending the diagnosis; otherwise, outputting the abnormal R-shaped locking pin.
14. The manufacturing method of the insulator chain R-shaped locking pin for monitoring loosening displacement is characterized by comprising the following steps of:
step 1, grooves with set depth are formed in a plurality of positions on the surface of a first pin leg of an R-shaped locking pin;
step 2, arranging a wire slot with a set depth on the first pin leg for connecting and wiring the flexible pressure sensing element and the main control circuit device;
step 3, embedding a flexible pressure sensing element in each groove, bonding and fixing the flexible pressure sensing element, and connecting the flexible pressure sensing element with a main control circuit device through a wire;
step 4, sealing the groove for protecting the flexible pressure sensing element in the groove;
and 5, packaging the main control circuit device in a shell (10) and fixing the main control circuit device at the head part of the R-shaped locking pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310968550.1A CN116682625B (en) | 2023-08-03 | 2023-08-03 | Insulator chain R-shaped locking pin capable of monitoring loosening displacement, monitoring and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310968550.1A CN116682625B (en) | 2023-08-03 | 2023-08-03 | Insulator chain R-shaped locking pin capable of monitoring loosening displacement, monitoring and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116682625A true CN116682625A (en) | 2023-09-01 |
| CN116682625B CN116682625B (en) | 2023-10-27 |
Family
ID=87782282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310968550.1A Active CN116682625B (en) | 2023-08-03 | 2023-08-03 | Insulator chain R-shaped locking pin capable of monitoring loosening displacement, monitoring and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116682625B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110001778A (en) * | 2009-06-30 | 2011-01-06 | 한국전력공사 | Spacer damper and system for monitoring overhead transmission line using thereof |
| CN207718947U (en) * | 2018-01-23 | 2018-08-10 | 安徽东盾电力有限公司 | A kind of special ball-and-socket of suspended compound insulator |
| KR101934741B1 (en) * | 2018-06-12 | 2019-01-03 | (주)인곡기술사사무소 | Connection structure of an overhead electric power line |
| CN211552900U (en) * | 2020-03-30 | 2020-09-22 | 国网上海市电力公司 | Monitoring device for sensing bolt and pin loosening state of power transmission line |
| CN211742800U (en) * | 2019-12-30 | 2020-10-23 | 中光华研电子科技有限公司 | R-shaped locking pin for insulator string based on RFID label |
| CN213935787U (en) * | 2020-11-24 | 2021-08-10 | 中国葛洲坝集团电力有限责任公司 | Windage yaw prevention insulator ball head hanging plate based on measurement and control technology of Internet of things |
| CN216528235U (en) * | 2021-08-26 | 2022-05-13 | 乐清迪祥电力金具有限公司 | Ball socket for suspension type composite insulator |
| CN218829005U (en) * | 2022-11-08 | 2023-04-07 | 内蒙古电力(集团)有限责任公司乌海超高压供电分公司 | Bulb hanging ring with safety function |
| CN116526401A (en) * | 2023-06-13 | 2023-08-01 | 国网福建省电力有限公司电力科学研究院 | Composite insulator end wire clamp with pressure sensing device and use method thereof |
-
2023
- 2023-08-03 CN CN202310968550.1A patent/CN116682625B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110001778A (en) * | 2009-06-30 | 2011-01-06 | 한국전력공사 | Spacer damper and system for monitoring overhead transmission line using thereof |
| CN207718947U (en) * | 2018-01-23 | 2018-08-10 | 安徽东盾电力有限公司 | A kind of special ball-and-socket of suspended compound insulator |
| KR101934741B1 (en) * | 2018-06-12 | 2019-01-03 | (주)인곡기술사사무소 | Connection structure of an overhead electric power line |
| CN211742800U (en) * | 2019-12-30 | 2020-10-23 | 中光华研电子科技有限公司 | R-shaped locking pin for insulator string based on RFID label |
| CN211552900U (en) * | 2020-03-30 | 2020-09-22 | 国网上海市电力公司 | Monitoring device for sensing bolt and pin loosening state of power transmission line |
| CN213935787U (en) * | 2020-11-24 | 2021-08-10 | 中国葛洲坝集团电力有限责任公司 | Windage yaw prevention insulator ball head hanging plate based on measurement and control technology of Internet of things |
| CN216528235U (en) * | 2021-08-26 | 2022-05-13 | 乐清迪祥电力金具有限公司 | Ball socket for suspension type composite insulator |
| CN218829005U (en) * | 2022-11-08 | 2023-04-07 | 内蒙古电力(集团)有限责任公司乌海超高压供电分公司 | Bulb hanging ring with safety function |
| CN116526401A (en) * | 2023-06-13 | 2023-08-01 | 国网福建省电力有限公司电力科学研究院 | Composite insulator end wire clamp with pressure sensing device and use method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘媛;贾勇勇;杨景刚;宋思齐;高山;李洪涛;: "一起220 kV GIS设备异响缺陷分析与处理", 高压电器, no. 02 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116682625B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7806657B2 (en) | Device for detecting damage of a wind energy turbine rotor blade due to a lightning strike | |
| US8002592B2 (en) | Data collecting connection | |
| CN106482845A (en) | Temp measuring system and method based on RFID | |
| CN202794092U (en) | Metro tunnel concrete crack monitoring device based on flexible conductive coating | |
| CN106092376B (en) | A kind of wireless temperature measurement means for correcting and method | |
| CN208606779U (en) | A kind of wireless intelligence sensor of built-in antenna type | |
| CN204030866U (en) | A kind of temperature measuring equipment for hydraulic generator stator and rotor windings | |
| CN110659711A (en) | RFID temperature measurement label for cable connector, installation method and temperature measurement method | |
| CN104011518A (en) | Infrared sensor and infrared sensor device | |
| CN116682625B (en) | Insulator chain R-shaped locking pin capable of monitoring loosening displacement, monitoring and manufacturing method | |
| US20020028110A1 (en) | Sensor for monitoring system of liner breakage at landfill | |
| CN209910848U (en) | Detection apparatus integrating RFID temperature measurement, transient ground voltage detection and ultrasonic detection | |
| CN219223981U (en) | Cable monitoring system | |
| CN211085491U (en) | Temperature measuring device of capacitor | |
| CN205921353U (en) | Cable joint with temperature measuring function | |
| CN209043417U (en) | A kind of reservoir construction water level monitor device | |
| CN207976226U (en) | Extra long distance reads the quick access device of digital temperature sensor data | |
| CN111079886A (en) | RFID anti-metal temperature measurement label | |
| CN216846535U (en) | Wireless intelligent vibration temperature sensor | |
| CN212614681U (en) | Double-probe underground pressure gauge | |
| CN113866220B (en) | Cable welding point fault monitoring device and method | |
| CN218600626U (en) | Flow sensor of temperature resistant structure | |
| CN2631168Y (en) | Mobile phone electromagnetic radiation detecting probe | |
| CN208206340U (en) | Insulating tube type busbar temperature monitoring device | |
| CN220288663U (en) | Remote sensing detection device based on GIS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |