Gas insulation transformer bushing

Abstract

The utility model discloses a gas insulation transformer bushing, which comprises a main body module, the main body module comprises a sleeve body, a plurality of insulating umbrellas which are integrally fixed on the outer side of the sleeve body in an array, a sealing cover which sleeves the top end of the sleeve body, a conductor which passes through the sleeve body and the sealing cover, a sealing element which is fixed on the top end of the sleeve body, and a second sealing ring which is fixed on the inner top wall of the sealing cover; the sealing cover is arranged on the casing pipe body, the air pressure sensor is arranged on the sealing cover and extends into an inner cavity of the sealing cover, the alarm lamp is fixed on the outer side of the sealing cover in an annular array mode, the locking piece is arranged in an inner cavity of the casing pipe body in an annular array mode and extends out of the casing pipe body to penetrate through the sealing cover, and the casing pipe body is used for protecting a conductor and is filled with SF6 gas. The sealing cover is used for sealing the transformer bushing and plays a role in gas insulation, the insulating umbrella is used for insulation and plays a role in heat dissipation, and the gas insulation transformer bushing has the advantages that the sealing cover is convenient to mount and dismount and high in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer bushings, and particularly relates to a gas-insulated transformer bushing. Background Technique

[0002] An insulating bushing is an insulator used to pass through a conductive conductor. As an important insulating component, it is mainly installed in power equipment such as transformers, reactors, circuit breakers, and walls, and undertakes the functions of insulation against the ground, support, and current-carrying, and is widely used.

[0003] The existing gas-insulated transformer bushings mainly have the following drawbacks during use: the connection method between the sealing top cover and the connecting collar is too complex, and the sealing performance after connection is not strong, resulting in difficulties in later leakage or maintenance. Therefore, there is room for improvement. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] For this reason, the technical solution adopted by the utility model is as follows: a gas-insulated transformer bushing, comprising: a main body module, the main body module includes a bushing body, a plurality of insulating umbrellas integrally and fixedly arranged on the outer side of the bushing body in an array, a sealing cover sleeved on the top end of the bushing body, a conductor passing through the bushing body and the sealing cover, a sealing member fixed on the top end of the bushing body, a second sealing ring fixed on the inner top wall of the sealing cover, a pressure sensor installed on the sealing cover and extending into the inner cavity of the sealing cover, warning lights fixedly arranged on the outer side of the sealing cover in a circumferential array, and locking members arranged in the inner cavity of the bushing body in a circumferential array and extending out of the bushing body through the sealing cover.

[0006] A circular cavity is formed inside the sealing cover, and the pressure sensor extends into the circular cavity.

[0007] In a preferred example, the utility model can be further configured as: the sealing member includes a first sealing ring fixed on the top end of the bushing body and two protrusions fixed on the surface of the first sealing ring.

[0008] In a preferred example, the utility model can be further configured as: when the first sealing ring is in close contact with the second sealing ring, an air cavity is formed between the first sealing ring, the second sealing ring and the two protrusions, and the circular cavity is communicated with the air cavity through a through hole.

[0009] In a preferred example, the utility model can be further configured as: the locking member includes a plug rod movably arranged inside the bushing main body and extending out of the bushing main body, and a spring connecting the plug rod and the inner wall of the bushing main body.

[0010] In a preferred embodiment of the present utility model, it can be further configured that: circular holes are arranged in an annular array on the outer side surface of the sealing cover, and the insertion rods are fitted in the circular holes.

[0011] In a preferred embodiment of the present utility model, it can be further configured that: the end of the insertion rod is provided with an arc-shaped surface.

[0012] In a preferred embodiment of the present utility model, it can be further configured that: the output end of the air pressure sensor is electrically connected to the input end of the alarm lamp through an electric wire.

[0013] By adopting the above technical solutions, the beneficial effects achieved by the present utility model are as follows:

[0014] 1. In the present utility model, a plurality of locking members are arranged in an array within the sleeve body, and a plurality of circular holes are arranged in an array on the sealing cover. When installing the sealing cover, only need to sleeved the sealing cover on the top end of the sleeve body. At this time, the locking members connect the sealing cover and the sleeve body together. When disassembling the sealing cover, only need to press the locking members in to release the connection between the two, making the installation and disassembly between the sealing cover and the sleeve body more convenient and fast, and increasing the practical performance.

[0015] 2. In the present utility model, a sealing member is fixed at the top end of the sleeve body, and a second sealing ring is fixed on the inner top wall of the sealing cover. When the sleeve body is connected to the sealing cover, the sealing member and the second sealing ring are in close contact to ensure the sealing performance between the two. At the same time, an annular cavity is arranged inside the sealing cover, and the annular cavity is communicated with the air cavity between the sealing member and the second sealing ring through a through hole, and an air pressure sensor is installed to monitor the air pressure change in the annular cavity in real time. When there is a leakage between the sealing surface and the second sealing ring, the air pressure in the annular cavity changes, and the air pressure sensor detects the air pressure change and alarms through the alarm lamp, which can ensure that the sleeve is discovered in time when it fails, and further increases the practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a cross-sectional schematic diagram of the present utility model;

[0018] Figure 3 is a cross-sectional structural schematic diagram of the present utility model;

[0019] Figure 4 is an exploded cross-sectional structural schematic diagram of the present utility model.

[0020] Reference numerals:

[0021] 100, Main body module; 110, Casing body; 120, Insulating umbrella; 130, Sealing cover; 131, Annular cavity; 132, Through hole; 133, Round hole; 140, Conductor; 150, Sealing element; 151, First sealing ring; 152, Protrusion; 160, Second sealing ring; 170, Pressure sensor; 180, Alarm lamp; 190, Locking member; 191, Insert rod; 192, Spring. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments may be combined with each other.

[0023] Some embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0024] Embodiment 1:

[0025] Combined with Figures 1-4 As shown, this embodiment provides a gas-insulated transformer bushing, including: a main body module 100.

[0026] The main body module 100 includes a casing body 110, a plurality of insulating umbrellas 120 fixedly integrated in an array on the outer side of the casing body 110, a sealing cover 130 sleeved on the top end of the casing body 110, a conductor 140 passing through the casing body 110 and the sealing cover 130, a sealing element 150 fixed on the top end of the casing body 110, a second sealing ring 160 fixed on the inner top wall of the sealing cover 130, a pressure sensor 170 installed on the sealing cover 130 and extending into the inner cavity of the sealing cover 130, alarm lamps 180 fixedly arranged in an annular array on the outer side of the sealing cover 130, and locking members 190 installed in an annular array in the inner cavity of the casing body 110 and extending out of the casing body 110 through the sealing cover 130.

[0027] The casing main body is used to protect the conductor 140, and SF6 gas is filled inside the casing main body to play a role in gas insulation. The insulating umbrellas 120 are used for insulation and play a role in heat dissipation. The sealing cover 130 cooperates with the casing body 110 to seal the casing body 110 to prevent the insulating gas inside from leaking. The conductor 140 is used for current flow.

[0028] The seal 150 is used to seal between the cover 130 and the bushing body 110. It includes a first sealing ring 151 fixed to the top end of the bushing body 110 and two protrusions 152 fixed to the surface of the first sealing ring 151. The first sealing ring 151 is used to cooperate with the second sealing ring 160 to ensure the sealing performance between the cover 130 and the bushing body 110. When the first sealing ring 151 is in close contact with the second sealing ring 160, an air cavity is formed among the first sealing ring 151, the second sealing ring 160 and the two protrusions 152. An annular cavity 131 is formed inside the cover 130. The annular cavity 131 is communicated with the air cavity through a through hole 132. The pressure sensor 170 extends into the annular cavity 131. When there is a leakage between the first sealing ring 151 and the second sealing ring 160, the air pressure in the air cavity changes, that is, the air pressure in the annular cavity 131 changes. When the pressure sensor 170 detects the change in the air pressure in the annular cavity 131, it can determine that the seal between the first sealing ring 151 and the second sealing ring 160 fails.

[0029] The warning lamp 180 is used to alarm the maintenance personnel, so that the maintenance personnel can know in time that the insulation bushing seal fails and carry out maintenance in time.

[0030] The locking member 190 is used to connect and fix the cover 130 and the bushing body 110. A plurality of circular grooves are formed in an annular array on the bushing body 110. The locking member 190 includes a plug rod 191 movably arranged inside the circular groove and extending out of the bushing body and a spring 192 connecting the plug rod 191 and the inner wall of the bushing body. Circular holes 133 are formed in an annular array on the outer side surface of the cover 130. The plug rod 191 is fitted in the circular holes 133, so that the cover 130 and the bushing body 110 can be fixedly connected together. At the same time, the end of the plug rod 191 is provided with an arc surface. When the cover 130 is pressed down, the plug rod 191 can be pressed into the circular groove, and when the circular hole 133 is flush with the plug rod 191, the plug rod 191 pops out under the action of the spring 192 and is fitted in the circular hole 133 to complete the fixation of the cover 130.

[0031] Working principle and usage process of the utility model: During use, the sealing cover 130 is sleeved on the sleeve body 110, and the sealing cover 130 is pressed down. As the sealing cover 130 is pressed down, the insertion rod 191 is pressed into the interior of the sleeve body 110. When the circular hole 133 on the sealing cover 130 is aligned with the locking member 190, under the action of the spring 192, the insertion rod 191 is inserted into the circular hole 133, connecting the sealing cover 130 and the sleeve body 110 together to complete the installation of the sealing cover 130. After the installation of the sealing cover 130 is completed, the sealing member 150 is closely attached to the second sealing ring 160 to ensure the sealing performance between the sealing cover 130 and the sleeve body 110. At the same time, due to the setting of the protrusions 152 on the first sealing ring 151, an air cavity is formed between the first sealing ring 151, the second sealing ring 160, and the two protrusions 152. The air in this air cavity is communicated with the annular cavity 131 through the through hole 132. When leakage occurs between the first sealing ring 151 and the second sealing ring 160, the air pressure in this air cavity changes, that is, the air pressure in the annular cavity 131 changes. The air pressure sensor 170 detects the change in the air pressure in the annular cavity 131 and turns on the alarm lamp 180 for alarm, facilitating maintenance personnel to promptly know that leakage has occurred in the sealing cover 130.

[0032] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A gas-insulated transformer bushing, comprising: The main body module (100), characterized in that the main body module (100) includes a sleeve body (110), a plurality of insulating umbrellas (120) fixedly integrated in an array on the outer side of the sleeve body (110), a sealing cover (130) sleeved on the top end of the sleeve body (110), a conductor (140) passing through the sleeve body (110) and the sealing cover (130), a sealing member (150) fixed on the top end of the sleeve body (110), a second sealing ring (160) fixed on the inner top wall of the sealing cover (130), a pressure sensor (170) installed on the sealing cover (130) and extending into the inner cavity of the sealing cover (130), warning lights (180) fixedly arranged in an annular array on the outer side of the sealing cover (130), and locking members (190) installed in an annular array in the inner cavity of the sleeve body (110) and extending out of the sleeve body (110) through the sealing cover (130); An annular cavity (131) is formed inside the sealing cover (130), and the pressure sensor (170) extends into the annular cavity (131).

2. The gas-insulated transformer bushing according to claim 1, characterized in that, The sealing member (150) includes a first sealing ring (151) fixed on the top end of the sleeve body (110) and two protrusions (152) fixed on the surface of the first sealing ring (151).

3. The gas-insulated transformer bushing according to claim 2, characterized in that, When the first sealing ring (151) is in close contact with the second sealing ring (160), an air chamber is formed between the first sealing ring (151), the second sealing ring (160) and the two protrusions (152), and the annular cavity (131) is communicated with the air chamber through a through hole (132).

4. A gas-insulated transformer bushing according to claim 1, characterized in that, The locking member (190) includes a plug rod (191) movably arranged inside the sleeve body and extending out of the sleeve, and a spring (192) connecting the plug rod (191) to the inner wall of the sleeve body.

5. A gas-insulated transformer bushing according to claim 4, characterized in that, Round holes (133) are formed in an annular array on the outer side surface of the sealing cover (130), and the plug rod (191) is fitted in the round holes (133).

6. The gas-insulated transformer bushing according to claim 4, wherein, The end of the plug rod (191) is arranged as an arc surface.

7. A gas-insulated transformer bushing according to claim 1, characterized in that, The output end of the pressure sensor (170) is electrically connected to the input end of the warning light (180) through an electric wire.

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