Insulator contamination sampling device and sampling method

Abstract

The utility model relates to an insulator pollution sampling device, including cover, inner cover, the top wall of cover is equipped with half circle upper interface, the bottom of cover is equipped with half circle lower interface, two covers are opposite and form a hollow casing, two half circle upper interfaces form an integral circle upper interface, two half circle lower interfaces form an integral circle lower interface, the inner cover is in the middle, the inner cover is rotatably connected with the cover, the rotation axis of inner cover is with the axis of upper interface and lower interface is collinear, is equipped with sampling assembly on the inner wall of inner cover, the sampling assembly falls the pollution on the porcelain piece of insulator to the bottom wall of cover, does not need to take down insulator from the tower or frame when sampling, need not to divide insulator string into single insulator to complete the field pollution sampling, improves the safety of sampling process, and the sampling environment is totally sealed, avoids the influence of external environment, still has the characteristics such as flexible, convenient operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment sampling device, in particular to an insulator contamination sampling device and a sampling method. BACKGROUND

[0002] The insulator is an important component of overhead transmission line and transformer substation, and is greatly affected by the environment in operation. Various contaminations such as dust, industrial dust and bird droppings will deposit on the surface of the insulator under the action of gravity and air drag. When the air humidity is large, these contaminations may form a conductive solution, thereby shortening the insulation distance between the high and low voltage ends of the insulator and causing flashover. Contamination flashover often occurs simultaneously in multiple insulators or insulator strings, which usually causes multiple transmission lines or multiple transformer substations to lose power, thereby causing large-area power failure and extremely serious consequences. Regularly detecting the equivalent salt density, gray density and chemical composition of the contaminations deposited on the surface of the insulator is an important means to understand the contamination adhesion degree and risk of the insulator surface, and is crucial to prevent power grid pollution flashover. To meet the requirements of equivalent salt density and gray density detection of insulator contamination, wiping method and water washing method can be used to sample the insulator contamination. However, the samples obtained by the two methods are wet samples, which do not meet the requirements of insulator contamination composition detection such as microscopic morphology detection and crystal composition detection, and dry samples need to be obtained by scraping and brushing.

[0003] At present, during the sampling of insulator contamination, the sampling personnel often need to climb on a tens of meters high transmission tower or a few meters high transformer substation portal structure, cooperate with the personnel standing on the ground through pulleys, and then take down the suspended test insulator string or operating insulator string, and then disassemble the insulator string into single insulators for sampling in sequence. After sampling is completed, the insulators need to be reassembled and hoisted to the tower or structure through the pulleys again, and hung at the specified position. Since the insulators are installed at a high position, the insulators need to be taken down from the high position during sampling, especially for high-voltage grade transmission lines, the height of the tower is often tens of meters, and the personal safety of the personnel cannot be absolutely guaranteed. SUMMARY

[0004] Therefore, in view of the above problems, it is necessary to provide an insulator contamination sampling device.

[0005] It is also necessary to provide an insulator contamination sampling method.

[0006] The utility model provides an insulator pollution sampling device, including the outer cover, inner cover, the top wall of outer cover is equipped with half circle upper interface, the bottom of outer cover is equipped with half circle lower interface, two outer covers are opposite and form a hollow casing, two half circle upper interfaces form an integral circle upper interface, two half circle lower interfaces form an integral circle lower interface, the inner cover is in the middle, the inner cover is rotatably connected with the outer cover, the rotation axis of inner cover is with the axis of upper interface and lower interface is collinear, be equipped with sampling assembly on the inner wall of inner cover, sampling assembly falls the pollution on the porcelain piece of insulator to the bottom wall of outer cover with.

[0007] Preferably, the outer cover is hemispherical, and the upper interface and the lower interface are coaxially arranged.

[0008] Preferably, the top wall and the side wall of the outer cover are made of glass fiber reinforced plastic, and the upper surface of the bottom wall of the outer cover is coated with a polytetrafluoroethylene coating.

[0009] Preferably, the bottom walls of the two outer covers are magnetically connected.

[0010] Preferably, the insulator pollution sampling device further comprises a scale rod, the inner cover is hemispherical, the inner cover is open at the bottom, two inner covers are opposite and form a hollow casing, the scale rod is arranged at the bottom of the inner cover, one end of the scale rod is connected with the inner cover, and the other end of the scale rod extends to the axis of the inner cover.

[0011] Preferably, the sampling assembly comprises a sampling clamp, the sampling clamp is fixedly arranged on the inner wall of the inner cover, and the sampling clamp can be extended and retracted along the radial direction of the inner cover.

[0012] Preferably, the sampling assembly comprises a scraper, the scraper is mounted on the scale rod, and the scraper can be extended and retracted along the vertical direction.

[0013] Preferably, the scraper can move along the horizontal direction.

[0014] Preferably, the insulator pollution sampling device further comprises a pollution suction component, a pollution discharge port is arranged on the side wall of the outer cover, the pollution discharge port is arranged close to the bottom wall of the outer cover, the pollution suction component comprises a pollution suction box and a fan, the pollution suction box is internally provided with a pollution collection layer, so as to divide the inner cavity of the pollution suction box into a first collection chamber and a second collection chamber, the pollution collection layer is breathable, the first collection chamber is provided with a pollution suction port, the pollution suction port is connected with the pollution discharge port, the second collection chamber is provided with an air inlet, and the air inlet is connected with the inlet of the fan.

[0015] An insulator pollution sampling method based on an insulator pollution sampling device, comprising the following steps:

[0016] The sampling cloth is mounted on the sampling clamp;

[0017] The inner cover is correspondingly installed in the outer cover;

[0018] The two outer covers are connected oppositely, and the porcelain part of the insulator to be sampled is packaged in the hollow shell formed by the two outer covers, and the upper and lower interfaces are connected with the upper and lower iron caps of the insulator to be sampled, respectively.

[0019] The distance between the sampling cloth or the scraper and the porcelain part of the insulator is adjusted, and the inner cover is rotated relative to the outer cover, so that the dirt on the porcelain part of the insulator is scraped off by the sampling cloth or the scraper.

[0020] The dirt collecting part is opened to collect the dirt.

[0021] The dirt collecting part is closed, and the outer cover, the inner cover and the sampling cloth are removed in sequence, and the sampling is completed.

[0022] Compared with the prior art, the beneficial effects of the present application are that:

[0023] The insulator does not need to be taken off from the tower or the frame during sampling, and the on-site dirt sampling can be completed without disassembling the insulator string into single insulators, which improves the safety of the sampling process, the sampling environment is fully sealed, and the influence of the external environment is avoided. It also has the characteristics of flexible and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front view of the insulator dirt sampling device.

[0025] Figure 2 It is a top view of the insulator dirt sampling device.

[0026] Figure 3 It is a partial enlarged view of the insulator dirt sampling device.

[0027] Figure 4 It is a structural schematic view of the dirt collecting part.

[0028] In the figure: insulator 10, porcelain part 11, iron cap 12, outer cover 20, ring body 21, inner cover 30, connecting rod 31, roller 32, scale rod 40, sampling clamp 50, scraper 60, dirt collecting part 70, dirt collecting box 71, fan 72, dirt collecting layer 73. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0030] Referring to Figures 1 to 4The embodiment of the present application provides a kind of insulator pollution sampling device, including cover 20, inner cover 30, the top wall of cover 20 is equipped with half circle upper interface, the bottom of cover 20 is equipped with half circle lower interface, two cover 20 are connected oppositely to form a hollow shell, two half circle upper interfaces form an integral circle upper interface, two half circle lower interfaces form an integral circle lower interface, inner cover 30 is built in the middle, inner cover 30 is rotatably connected with cover 20, the rotation axis of inner cover 30 is collinear with the axis of upper interface and lower interface, sampling assembly is provided on the inner wall of inner cover 30, sampling assembly is scraped to the dirt on the porcelain piece 11 of insulator 10 to the bottom wall of cover 20.

[0031] As an example, the inner wall of the upper interface and the lower interface is sealingly connected with the outer wall of the iron cap 12 of the insulator 10.

[0032] Compared with the prior art, the present application has the following advantages:

[0033] The insulator 10 does not need to be removed from the tower or frame during sampling, and the insulator 10 string can be disassembled into a single insulator 10 to complete the on-site pollution sampling, which improves the safety of the sampling process, the sampling environment is completely sealed, and the influence of the external environment is avoided. It also has the characteristics of flexible and convenient operation.

[0034] Referring to Figures 1 to 4 Further, the cover 20 is hemispherical, and the upper interface and the lower interface are coaxially arranged.

[0035] Referring to Figures 1 to 4 Further, the top wall and the side wall of the cover 20 are made of glass steel, and the upper surface of the bottom wall of the cover 20 is provided with a polytetrafluoroethylene coating.

[0036] Referring to Figures 1 to 4 Further, the bottom walls of the two covers 20 are magnetically connected.

[0037] Referring to Figures 1 to 4 Further, the insulator pollution sampling device further comprises a scale rod 40, the inner cover 30 is hemispherical, the inner cover 30 is open at the bottom, the two inner covers 30 are connected oppositely to form a hollow shell, the scale rod 40 is arranged at the bottom of the inner cover 30, one end of the scale rod 40 is connected with the inner cover 30, and the other end of the scale rod 40 extends to the axis of the inner cover 30.

[0038] Referring to Figures 1 to 4 Further, the sampling assembly comprises a sampling clamp 50, the sampling clamp 50 is fixedly arranged on the inner wall of the inner cover 30, and the sampling clamp 50 can be telescoped along the radius direction of the inner cover 30.

[0039] As an example, a first micro electric telescopic rod is installed on the inner wall of the inner cover 30, and the sampling clamp 50 is fixedly arranged on the first micro electric telescopic rod.

[0040] Referring to Figures 1 to 4 Further, the sampling assembly comprises a scraper 60 mounted on the scale rod 40, and the scraper 60 is retractable in the vertical direction.

[0041] Referring to Figures 1 to 4 Further, the scraper 60 is movable in the horizontal direction.

[0042] As an example, a second micro electric retractable rod is mounted on the scale rod 40, and the scraper 60 is fixed on the second micro electric retractable rod.

[0043] As an example, a third micro electric retractable rod is mounted on the scale rod 40, the fixed end of the second micro electric retractable rod is in sliding connection with the scale rod 40, the retractable end of the third micro electric retractable rod is connected with the fixed end of the second micro electric retractable rod, and the fixed end of the second micro electric retractable rod not directly connected with the third micro electric retractable rod is connected through a spring.

[0044] Referring to Figures 1 to 4 Further, the insulator contamination sampling device further comprises a contamination suction component 70, and a contamination discharge port is arranged on the side wall of the outer cover 20, the contamination discharge port is arranged close to the bottom wall of the outer cover 20, and the inlet of the contamination suction component 70 is connected with the contamination discharge port.

[0045] Referring to Figures 1 to 4 Further, the contamination suction component 70 comprises a suction box 71 and a fan 72, the suction box 71 is internally provided with a contamination collection layer 73, so as to divide the inner cavity of the suction box 71 into a first collection chamber and a second collection chamber, the contamination collection layer 73 is air-permeable, the first collection chamber is provided with a suction port, the suction port is connected with the contamination discharge port, and the second collection chamber is provided with an air inlet, the air inlet is connected with the inlet of the fan 72.

[0046] As an example, a semicircular ring body 21 is arranged in each outer cover 20, the semicircular ring body 21 is arranged on the inner side top wall of the outer cover 20, two outer covers 20 are abutted to form a hollow shell, two semicircular ring bodies 21 are abutted to form a circular ring body 21, a groove is arranged on the outer ring wall of the circular ring body 21, the bottom wall of the groove is inclined, a plurality of connecting rods 31 are arranged on the outer side top wall of the inner cover 30, the connecting rods 31 are vertically arranged, the connecting rods 31 are circumferentially distributed with the center of the lower abutment or the center of the lower abutment as the center, the lower end of the connecting rod 31 is connected with the inner cover 30, and the upper end of the connecting rod 31 is mounted with an umbrella-shaped roller 32, the umbrella-shaped roller 32 is in rolling cooperation with the groove, so as to enable the inner cover 30 to rotate relative to the outer cover 20, and the rotation axis is coaxial with the lower abutment or the lower abutment. The problem that the rotation center between the outer cover 20 and the inner cover 30 cannot be pre-set is solved.

[0047] For example, a battery box is arranged outside the outer cover 20 to supply power to the first micro electric telescopic rod, the second micro electric telescopic rod, the third micro electric telescopic rod and the fan 72. A start-stop button is arranged outside the outer cover 20 to control the start-stop of the first micro electric telescopic rod, the second micro electric telescopic rod, the third micro electric telescopic rod and the fan 72. An infrared transceiver control module is arranged outside the outer cover 20 in parallel with the start-stop button circuit to control the power supply and stop of the lithium battery in parallel.

[0048] For example, a point-shaped protrusion is arranged on the bottom wall of the outer cover 20, and when the airflow passes through the bottom wall of the outer cover 20, the vortex is easily formed.

[0049] The embodiment of the present application provides a kind of insulator pollution sampling method, based on insulator pollution sampling device, including the following steps:

[0050] Sampling cloth is installed on sampling clamp 50;

[0051] One inner cover 30 is correspondingly installed in one outer cover 20;

[0052] Two outer covers 20 are connected, and the porcelain piece 11 of the insulator 10 to be sampled is packaged in the hollow shell formed by two outer covers 20, and the upper and lower interfaces of the whole circle are connected with the upper and lower two iron caps 12 of the insulator 10 to be sampled;

[0053] The distance between sampling cloth or scraper 60 and the porcelain piece 11 of insulator 10 is adjusted, and the inner cover 30 is rotated relative to the outer cover 20, so that the pollution on the porcelain piece 11 of the insulator 10 is scraped off by the sampling cloth or scraper 60;

[0054] Open the pollution suction component 70 to collect pollution;

[0055] Close the pollution suction component 70, remove the outer cover 20, the inner cover 30 and the sampling cloth in turn, and complete sampling.

[0056] The steps in the embodiment method can be sequentially adjusted, combined and deleted according to actual needs.

[0057] The modules or units in the embodiment device can be combined, divided and deleted according to actual needs.

[0058] The above only discloses the preferred embodiment of the present application, and of course cannot limit the scope of the present application, and those skilled in the art can understand that the whole or part of the above embodiment can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. An insulator pollution sampling device, characterized in that: The device includes an outer cover and an inner cover. The top wall of the outer cover has a semi-circular upper interface, and the bottom of the outer cover has a semi-circular lower interface. The two outer covers are joined together to form a hollow shell. The two semi-circular upper interfaces form a full-circular upper interface, and the two semi-circular lower interfaces form a full-circular lower interface. The inner cover is built into the inner cover and is rotatably connected to the outer cover. The rotation axis of the inner cover is collinear with the axes of the upper and lower interfaces. A sampling component is provided on the inner wall of the inner cover to scrape off dirt from the porcelain components of the insulator. The sampling device for insulator contamination includes a scale rod on the bottom wall of the outer cover. The inner cover is hemispherical with an opening at the bottom. Two inner covers are joined together to form a hollow shell. The scale rod is located at the bottom of the inner cover, with one end connected to the inner cover and the other end extending to the axis of the inner cover. The sampling assembly includes a sampling clamp and a scraper. The sampling clamp is fixed to the inner wall of the inner cover and can extend and retract along the radius of the inner cover. The scraper is mounted on the scale rod and can extend and retract vertically.

2. The insulator pollution sampling device as described in claim 1, characterized in that: The outer cover is hemispherical, and the upper and lower interfaces are coaxially arranged.

3. The insulator pollution sampling device as described in claim 1, characterized in that: The top and side walls of the outer cover are made of fiberglass, and the upper surface of the bottom wall of the outer cover is coated with polytetrafluoroethylene.

4. The insulator pollution sampling device as described in claim 1, characterized in that: The bottom walls of the two outer covers are magnetically connected.

5. The insulator pollution sampling device as described in claim 1, characterized in that: The scraper is capable of moving horizontally.

6. The insulator pollution sampling device as described in claim 1, characterized in that: The insulator contamination sampling device also includes a contamination suction component. A drain outlet is provided on the side wall of the outer casing, and the drain outlet is located near the bottom wall of the outer casing. The contamination suction component includes a suction box and a fan. The suction box is provided with a contamination collection layer to divide the inner cavity of the suction box into a first collection chamber and a second collection chamber. The contamination collection layer is breathable. The first collection chamber is provided with a suction port, which is connected to the drain outlet. The second collection chamber is provided with a vent, which is connected to the inlet of the fan.

7. A method for sampling insulator contamination, based on the insulator contamination sampling device according to any one of claims 1 to 6, characterized in that, The steps include: installing the sampling cloth onto the sampling clip; Install one inner cover inside one outer cover; The two outer covers are connected relative to each other, and the porcelain part of the insulator to be sampled is encapsulated in the hollow shell formed by the two outer covers. The upper and lower interfaces of the whole circle are connected to the upper and lower iron caps of the insulator to be sampled, respectively. Adjust the distance between the sampling cloth or scraper and the porcelain part of the insulator, and rotate the inner cover relative to the outer cover to scrape off the dirt on the porcelain part of the insulator through the sampling cloth or scraper; Activate the suction unit to collect the waste; Turn off the suction device, and remove the outer cover, inner cover, and sampling cloth in sequence to complete the sampling.

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