GIS gas insulated switchgear ultrahigh frequency test shielding device

Abstract

The invention discloses a GIS (gas insulated switchgear) ultrahigh frequency test shielding device which comprises a device body, an insulation basin is arranged on the outer side face of the device body, a storage box is mounted on the outer side face of the insulation basin, a support, a baffle and a limiting sliding rail are fixedly mounted in the storage box, and a rotating shaft is mounted in the support. A shielding belt and a clockwork spring are installed on the outer side face of the rotating shaft. A clamping base is fixedly installed at the end, away from the rotating shaft, of the shielding belt. According to the invention, the shielding tape is pulled outwards to drive the rotating shaft to rotate and enable the clockwork spring to generate elastic deformation, so that after the shielding tape is installed, the shielding tape can be tightly attached to the insulating spacer under the acting force of the clockwork spring; and under the acting force of the clockwork spring, the shielding belt can be wound on the outer side face of the rotating shaft and withdrawn into the storage box, and the overall practicability of the device is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-frequency testing, and in particular relates to an ultra-high frequency testing shielding device for GIS gas-insulated switchgear. Background Art

[0002] GIS (Gas-Insulated Switchgear) is a closed high-voltage electrical equipment that uses insulating gas as the insulating medium and arc extinguishing medium. Compared with traditional air-insulated switchgear, GIS has the advantages of small footprint, high reliability and low maintenance cost. It is widely used in urban power grid transformation, substation construction and power system upgrade.

[0003] The core advantage of GIS equipment lies in its internal insulating gas, sulfur hexafluoride (SF6), which is a colorless, odorless, non-toxic and non-flammable gas with excellent insulation and arc extinguishing properties. In GIS equipment, SF6 gas is filled around high-voltage electrical components to form an insulating layer, which ensures the insulation between each live part and between the live part and the metal casing. In addition, in switchgear such as circuit breakers, SF6 gas can also quickly extinguish arcs, thereby ensuring the safe operation of the equipment.

[0004] Although GIS equipment has many advantages, in actual operation, due to factors such as manufacturing process and material defects, tiny bubbles, particles or burrs may appear inside the equipment. These tiny defects may cause partial discharge. Partial discharge will not only further damage the insulation performance of the equipment, but may also cause greater failures and even damage the equipment. Therefore, it is very important to monitor the partial discharge inside the GIS equipment in real time.

[0005] Ultra-high frequency (UHF) detection technology is a non-invasive partial discharge monitoring method currently widely used in the power industry. This technology determines whether there is a partial discharge phenomenon and the severity of the discharge by detecting the ultra-high frequency electromagnetic wave signal generated inside the GIS equipment. However, in actual applications, due to the large number of electromagnetic interference sources in the external environment, such as mobile communication base stations, radio stations, radars, etc., the electromagnetic waves generated by these interference sources may affect the ultra-high frequency detection signals and reduce the accuracy of the detection results.

[0006] There is a UHF test shielding device for GIS gas insulated switchgear. The sensor is fixed in a metal box, and the sensor signal line passes through the signal line shielding sleeve to connect with the sensor. Each time the signal is tested, the annular shielding cover is put on the outer periphery of the flange of the metal tank of the GIS gas insulated switchgear. The left-right symmetrical semicircular ring metal shell is conveniently and quickly connected by bolts, and the flexible shielding belt is connected by bolt clips, which can adapt to the flange of the metal tank of the GIS gas insulated switchgear with different diameters. However, in actual use, the signal line shielding sleeve and the metal box of the device are large in size, which is not convenient for storage and management; in addition, the device uses bolt clips to fix the shielding belt, which is inconvenient to disassemble and assemble, reducing the overall work efficiency. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a GIS gas insulated switchgear ultra-high frequency test shielding device in view of the deficiencies in the above-mentioned prior art, so as to solve the technical problems of complex installation and low efficiency of the existing shielding devices.

[0008] The present invention adopts the following technical solutions: A GIS gas insulated switchgear ultra-high frequency test shielding device comprises a device body, an insulating basin is arranged outside the device body, a storage box is installed on the outer surface of the insulating basin, and a support, a baffle and a limit slide rail are fixed inside the storage box; A rotating shaft is installed inside the support, a shielding belt and a spring are installed outside the rotating shaft, a clamping seat is fixed to one end of the shielding belt away from the rotating shaft, and a first limit block is installed inside the clamping seat; A slider is slidably installed inside the limiting slide rail, a second limiting block is connected to the inner side of the slider, a compression spring is installed on the bottom surface of the second limiting block, a connecting rod is installed on the top surface of the second limiting block, and a handle is installed on the top end of the connecting rod; The baffle is arranged between the limiting slide rail and the connecting rod.

[0009] Preferably, the number of the support and the number of the clockwork spring are both two.

[0010] Preferably, one end of the clockwork spring away from the rotating shaft is fixedly connected to the inside of the support.

[0011] Preferably, the number of the limiting slide rails and the number of the sliding blocks are both two.

[0012] Preferably, there are plural compression springs.

[0013] Preferably, one end of the plurality of compression springs away from the second limiting block is fixedly connected to the interior of the storage box.

[0014] Preferably, there are two first limiting blocks.

[0015] Preferably, the outer side surfaces of the two first limit blocks and the second limit block are both arranged as inclined surfaces, and the two first limit blocks are both clamped on the inner side surface of the second limit block.

[0016] Preferably, a test hole and a shielding cover are provided on the outer side of the shielding tape.

[0017] Preferably, Velcro is provided on the outer side of the shielding belt and the inner side of the shielding cover.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: A UHF test shielding device for GIS gas insulated switchgear, which can drive the rotating shaft to rotate and elastically deform the clockwork spring by pulling the shielding belt outward, and then push the clamping seat to make the inclined surfaces of the two first limit blocks contact the inclined surfaces of the second limit blocks, and the two first limit blocks will squeeze and move the second limit block downward, and then after the first limit block leaves the position of the second limit block, the second limit block can move upward under the reaction force of multiple compression springs, thereby effectively clamping the position of the first limit block; by pressing the handle, the handle can drive the connecting rod and the second limit block to move downward together The plurality of compression springs are compressed, and then when the second limit block leaves the position where the first limit block is engaged, the first limit block and the holder can be taken out, and then the handle is released, and the second limit block can be restored to its original position under the reaction force of the plurality of compression springs, and the shielding belt can be wound around the outer surface of the rotating shaft under the action of the clockwork spring and retracted into the interior of the storage box, thereby effectively improving the overall practicality of the device; at the same time, the limit slide rail can effectively limit the movement range of the slider and the second limit block to prevent them from being dislocated or offset, thereby improving the overall stability of the device and ensuring the normal operation of the device.

[0019] Furthermore, when installing the shielding belt, pulling the shielding belt outward can drive the rotating shaft to rotate and elastically deform the clockwork spring. Therefore, after the shielding belt is installed, it can fit tightly on the insulating basin under the force of the clockwork spring. In addition, when removing the shielding belt, the shielding belt can be wound around the outer surface of the rotating shaft under the force of the clockwork spring and retracted into the interior of the storage box, which effectively improves the overall practicality of the device.

[0020] Furthermore, the two sliders can move respectively inside the two limit slide rails, and the limit slide rails can effectively limit the movement range of the slider and the second limit block to prevent them from being misaligned or offset, thereby improving the overall stability of the device and ensuring the normal operation of the device.

[0021] Furthermore, the second limit block is abutted against the bottom surface of the baffle by the reaction force provided by multiple compression springs. In addition, when the first limit block is clamped on the inner side surface of the second limit block, the reaction force provided by the multiple compression springs cooperates with the second limit block to effectively limit the position of the first limit block and the socket, thereby improving the overall stability of the device.

[0022] Furthermore, when installing the shielding belt, the inclined surfaces of the two first limit blocks are brought into contact with the inclined surfaces of the second limit block by pushing the socket, and the two first limit blocks will squeeze and move the second limit block downward. After that, after the first limit block leaves the position of the second limit block, the second limit block can move upward under the reaction force of multiple compression springs, thereby effectively locking the position of the first limit block.

[0023] Furthermore, when the shielding belt needs to be removed, the handle is pressed, and the handle can drive the connecting rod and the second limit block to move downward and compress multiple compression springs. Thereafter, when the second limit block leaves the position where the first limit block is engaged, the first limit block and the socket can be taken out, and then the handle is released. The second limit block can be restored to its original position under the reaction force of the multiple compression springs, effectively improving the overall convenience and work efficiency of the device.

[0024] Furthermore, when a close contact test of the insulating basin is required, the shielding cover is opened, and the test equipment can be fitted and tested with the insulating basin through the test hole. The Velcro can easily and quickly open and close the shielding cover, thereby improving the overall convenience and work efficiency of the device.

[0025] To summarize, the present invention can drive the rotating shaft to rotate and elastically deform the clockwork spring by pulling the shielding belt outward, and then push the socket to make the inclined surfaces of the two first limit blocks contact with the inclined surfaces of the second limit blocks, and the two first limit blocks will squeeze and move the second limit block downward, and then after the first limit block leaves the position of the second limit block, the second limit block can move upward under the reaction force of multiple compression springs, and thus can effectively clamp the position of the first limit block; when it is necessary to conduct a close contact test on the insulating basin, open the shielding cover, and the test equipment can be attached and tested with the insulating basin through the test hole, and the Velcro can conveniently and quickly open and close the shielding cover, thereby improving the overall convenience and work efficiency of the device.

[0026] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings to be used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a three-dimensional schematic diagram of the shielding cover and other parts of the present invention; Figure 3 It is a left side cross-sectional schematic diagram of the storage box and other parts of the present invention; Figure 4 It is a three-dimensional cross-sectional schematic diagram of the support and other parts of the present invention; Figure 5 It is a three-dimensional cross-sectional schematic diagram of parts such as the limiting slide rail of the present invention.

[0029] Among them: 1. Equipment body; 2. Insulation basin; 3. Storage box; 4. Support; 5. Baffle; 6. Limit slide rail; 7. Rotating shaft; 8. Shielding belt; 9. Spring; 10. Holder; 11. First limit block; 12. Slider; 13. Second limit block; 14. Compression spring; 15. Connecting rod; 16. Handle; 17. Test hole; 18. Shielding cover; 19. Velcro. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0034] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0035] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0036] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] The present invention provides a GIS gas insulated switchgear ultra-high frequency test shielding device, wherein an insulating basin is arranged on the outer side of the device body, a storage box is installed on the outer side of the insulating basin, a support, a baffle and a limit slide rail are fixedly installed inside the storage box, a rotating shaft is installed inside the support, a shielding belt and a spring spring are installed on the outer side of the rotating shaft, and a holder is fixedly installed on the end of the shielding belt away from the rotating shaft. By pulling the shielding belt outward, the rotating shaft can be driven to rotate and the spring spring can be elastically deformed, so after the shielding belt is installed, it can be tightly attached to the insulating basin under the action of the spring spring, and when the shielding belt is removed, the shielding belt can be wound around the outer side of the rotating shaft under the action of the spring spring and retracted into the storage box, effectively improving the overall practicality of the device.

[0038] See also Figure 1 The present invention discloses a UHF test shielding device for GIS gas insulated switchgear, comprising a device body 1, an insulating basin 2, a storage box 3, a support 4, a baffle 5, a limiting slide rail 6, a rotating shaft 7, a shielding belt 8, a clockwork spring 9, a holder 10, a first limiting block 11, a slider 12, a second limiting block 13, a compression spring 14, a connecting rod 15 and a handle 16.

[0039] An insulating basin 2 is provided on the outer side of the equipment body 1, and a storage box 3 is installed on the outer side of the insulating basin 2. A support 4, a baffle 5 and a limiting slide rail 6 are fixedly installed inside the storage box 3. A rotating shaft 7 is installed inside the support 4, and a shielding belt 8 and a clockwork spring 9 are installed on the outer side of the rotating shaft 7. A holder 10 is fixedly installed on the end of the shielding belt 8 away from the rotating shaft 7, and a first limiting block 11 is fixedly installed on the inner side of the holder 10. A slider 12 is slidably installed inside the limiting slide rail 6, and a second limiting block 13 is fixedly connected to the inner side of the slider 12. A compression spring 14 is fixedly installed on the bottom surface of the second limiting block 13, a connecting rod 15 is fixedly installed on the top surface of the second limiting block 13, and a handle 16 is fixedly installed on the top of the connecting rod 15.

[0040] See also Figure 4, the number of the support 4 and the number of the spring 9 are both provided with two, and the end of the spring 9 away from the rotating shaft 7 is fixedly connected to the inside of the support 4. The advantage is that, through this structure, when installing the shielding belt 8, pulling the shielding belt 8 outward can drive the rotating shaft 7 to rotate and elastically deform the spring 9, so after the shielding belt 8 is installed, it can be tightly attached to the insulating basin 2 under the action of the spring 9, and when the shielding belt 8 is removed, the shielding belt 8 can be wound around the outer surface of the rotating shaft 7 under the action of the spring 9 and retracted into the inside of the storage box 3, which effectively improves the overall practicality of the device.

[0041] Specifically, the number of the limit slide rails 6 and the slider 12 is set to two; the advantage is that, through this structure, the two sliders 12 can move inside the two limit slide rails 6 respectively, and at the same time, the limit slide rails 6 can effectively limit the movement range of the slider 12 and the second limit block 13 to prevent them from being misplaced or offset, thereby improving the overall stability of the device and ensuring the normal operation of the device.

[0042] Specifically, there are multiple compression springs 14, and one end of each of the compression springs 14 away from the second limit block 13 is fixedly connected to the interior of the storage box 3; the advantage is that the second limit block 13 is abutted against the bottom surface of the baffle 5 by the reaction force provided by the multiple compression springs 14. In addition, when the first limit block 11 is clamped on the inner side surface of the second limit block 13, the reaction force provided by the multiple compression springs 14 cooperates with the second limit block 13 to effectively limit the position of the first limit block 11 and the socket 10, thereby improving the overall stability of the device.

[0043] See also Figure 3 and Figure 5There are two first limit blocks 11 , and the outer sides of the two first limit blocks 11 and the second limit block 13 are both inclined surfaces, and the two first limit blocks 11 are both clamped on the inner side of the second limit block 13 . The advantage is that, through this structure, when installing the shielding belt 8, by pushing the socket 10, the inclined surfaces of the two first limit blocks 11 are in contact with the inclined surfaces of the second limit blocks 13, and the two first limit blocks 11 will squeeze and move the second limit block 13 downward, and then after the first limit block 11 leaves the position of the second limit block 13, the second limit block 13 can move upward under the reaction force of multiple compression springs 14, and thus the position of the first limit block 11 can be effectively clamped; when the shielding belt 8 needs to be removed, the handle 16 is pressed, and the handle 16 can drive the connecting rod 15 and the second limit block 13 to move downward together and compress the multiple compression springs 14, and then when the second limit block 13 leaves the clamping position of the first limit block 11, the first limit block 11 and the socket 10 can be taken out, and then the handle 16 is released, and the second limit block 13 can be restored to its original position under the reaction force of multiple compression springs 14, which effectively improves the overall convenience and work efficiency of the device.

[0044] See also Figure 2 The outer side of the shielding belt 8 is provided with a test hole 17 and a shielding cover 18, and the outer side of the shielding belt 8 and the inner side of the shielding cover 18 are both provided with a Velcro 19. The advantage is that, through this structure, when the insulating basin 2 needs to be closely contacted for testing, the shielding cover 18 is opened, and the test equipment can be attached and tested with the insulating basin 2 through the test hole 17, and the Velcro 19 can conveniently and quickly open and close the shielding cover 18, thereby improving the overall convenience and work efficiency of the device.

[0045] When the ultra-high frequency test shielding device for GIS gas-insulated switchgear of the present invention is used, the shielding belt 8 is pulled outward to drive the rotating shaft 7 to rotate and the clockwork spring 9 to produce elastic deformation; Then, the card holder 10 is pushed to make the inclined surfaces of the two first limit blocks 11 contact the inclined surfaces of the second limit block 13, and the two first limit blocks 11 will squeeze and move the second limit block 13 downward; After the first limit block 11 leaves the position of the second limit block 13, the second limit block 13 can move upward under the reaction force of the plurality of compression springs 14, thereby effectively locking the position of the first limit block 11; When the insulating basin 2 needs to be tested in close contact, the shielding cover 18 is opened, and the test equipment can be attached to the insulating basin 2 through the test hole 17 for testing. The Velcro 19 can open and close the shielding cover 18 conveniently and quickly, thereby improving the convenience and work efficiency of the device as a whole. When removing the shielding belt 8, the handle 16 is pressed, and the handle 16 can drive the connecting rod 15 and the second limit block 13 to move downward and compress the multiple compression springs 14; Afterwards, when the second limit block 13 leaves the position where the first limit block 11 is engaged, the first limit block 11 and the holder 10 can be taken out; Then release the handle 16, the second limit block 13 can be restored to its original position under the reaction force of multiple compression springs 14, and the shielding belt 8 can be wound around the outer surface of the rotating shaft 7 under the action of the clockwork spring 9 and retracted into the interior of the storage box 3, which effectively improves the overall practicality of the device; at the same time, the limiting slide rail 6 can effectively limit the movement range of the slider 12 and the second limit block 13 to prevent them from being misplaced or offset, thereby improving the overall stability of the device and ensuring the normal operation of the device.

[0046] In summary, the ultra-high frequency test shielding device for GIS gas-insulated switchgear of the present invention has the advantages of easy storage and management, simple structure, convenient assembly and disassembly, and improved work efficiency, thus solving the above-mentioned technical problems.

[0047] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A UHF test shielding device for GIS gas insulated switchgear, characterized in that: The device comprises a device body (1), an insulating basin (2) is arranged outside the device body (1), a storage box (3) is installed on the outer surface of the insulating basin (2), and a support (4), a baffle (5) and a limit slide rail (6) are fixed inside the storage box (3); A rotating shaft (7) is installed inside the support (4), a shielding belt (8) and a spring (9) are installed outside the rotating shaft (7), a clamping seat (10) is fixed to one end of the shielding belt (8) away from the rotating shaft (7), and a first limit block (11) is installed inside the clamping seat (10); A slider (12) is slidably mounted inside the limiting slide rail (6), a second limiting block (13) is connected to the inner side of the slider (12), a compression spring (14) is mounted on the bottom surface of the second limiting block (13), a connecting rod (15) is mounted on the top surface of the second limiting block (13), and a handle (16) is mounted on the top end of the connecting rod (15); The baffle plate (5) is arranged between the limiting slide rail (6) and the connecting rod (15).

2. The UHF test shielding device for GIS gas insulated switchgear according to claim 1 is characterized in that: The number of the support (4) and the number of the winding spring (9) are both two.

3. The UHF test shielding device for GIS gas insulated switchgear according to claim 2 is characterized in that: One end of the clockwork spring (9) away from the rotating shaft (7) is fixedly connected to the inside of the support (4).

4. The UHF test shielding device for GIS gas insulated switchgear according to claim 1, characterized in that: The number of the limiting slide rail (6) and the number of the sliding block (12) are both two.

5. The UHF test shielding device for GIS gas insulated switchgear according to claim 1, characterized in that: The number of compression springs (14) is plural.

6. The UHF test shielding device for GIS gas insulated switchgear according to claim 5, characterized in that: One end of the plurality of compression springs (14) away from the second limiting block (13) is fixedly connected to the interior of the storage box (3).

7. The UHF test shielding device for GIS gas insulated switchgear according to claim 1, characterized in that: The number of the first limiting blocks (11) is two.

8. The UHF test shielding device for GIS gas insulated switchgear according to claim 7, characterized in that: The outer side surfaces of the two first limit blocks (11) and the second limit block (13) are both arranged as inclined surfaces, and the two first limit blocks (11) are both clamped on the inner side surface of the second limit block (13).

9. The UHF test shielding device for GIS gas insulated switchgear according to claim 1, characterized in that: A test hole (17) and a shielding cover (18) are provided on the outer side of the shielding belt (8).

10. The UHF test shielding device for GIS gas insulated switchgear according to claim 9, characterized in that: Velcro (19) is provided on the outer side of the shielding belt (8) and the inner side of the shielding cover (18).

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