CN114464435A - Voltage transformer for analog detection of humidity in SF6 gas - Google Patents

Abstract

The invention relates to a method for simulating and detecting SF₆A voltage transformer for gas humidity comprises a voltage transformer shell, a hollow connecting pipe, a humidity detector, a supporting plate, a positioning plate, a sealing flange and an electric connecting terminal. Mainly through the setting of cavity connecting pipe, moisture detector, backup pad, locating plate, sealing flange and electric connection terminal, can set up inside the cavity of cavity connecting pipe with moisture detector. In addition, the voltage transformer shell and the hollow connecting pipe can be sealed through the arrangement of the sealing flange, so that SF (sulfur hexafluoride) is avoided₆The leakage of gas keeps the sealing performance of the voltage transformer, so that the voltage transformer can meet the sealing requirement. The voltage transformer canSimulating the humidity and performance inside the voltage transformer to establish SF₆The relation between the gas humidity and the performance of the voltage transformer is used for rapidly troubleshooting whether the voltage transformer is subjected to the fault caused by the humidity for workers, and the troubleshooting efficiency of the voltage transformer is improved.

Description

Voltage transformer for analog detection of humidity in SF6 gas

technical field

The invention relates to the technical field of electrical components, in particular to a voltage transformer for simulating the detection of the humidity of SF ₆ gas.

Background technique

In GIS (Gas insulated Switchgear, gas-insulated fully enclosed combined electrical appliances) equipment, SF ₆ gas is usually charged into the GIS equipment to form an insulating environment inside the GIS equipment, so that the internal components of the GIS equipment are kept in good condition. Insulation, to maintain the safety of GIS equipment operation.

As one of the important components of GIS equipment, voltage transformers are widely used because of their functions such as power supply and measurement of line electrical performance parameters. The use of voltage transformers can not only provide good protection for the circuit, but also reflect the electrical performance parameters of the circuit in time, providing an important reference for the maintenance and improvement of the circuit. Similarly, when using voltage transformers, in order to maintain the insulation inside the voltage transformers, SF ₆ gas will also be charged inside the voltage transformers to avoid line faults such as short circuits inside the voltage transformers.

Although SF ₆ gas can play a good insulating role in the voltage transformer, during the use of the voltage transformer, the humidity inside the voltage transformer will inevitably fluctuate. Large fluctuations in humidity may adversely affect the performance of the voltage transformers. In the traditional use process, when the voltage transformer fails, it is difficult for the staff to locate whether the fault is caused by the humidity problem, which will bring some trouble to the troubleshooting of the fault. At this time, if the relationship between the humidity and the performance of the voltage transformer can be established, the staff can quickly check whether the fault of the voltage transformer is caused by humidity, and the efficiency of the fault checking of the voltage transformer can be improved.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a voltage transformer for simulating the detection of the humidity of SF ₆ gas. The humidity and performance of the voltage transformer can be simulated by the voltage transformer used for simulating the detection of the humidity of the SF ₆ gas, and the relationship between the humidity of the SF ₆ gas and the performance of the voltage transformer can be established, so that the staff can check whether the voltage transformer is The faults caused by humidity can be quickly checked to improve the troubleshooting efficiency of voltage transformers.

In order to solve the above technical problems, the technical scheme of the present invention is:

A voltage transformer for simulating the detection of SF ₆ gas humidity, comprising a voltage transformer shell, a hollow connecting pipe, a humidity detector, a support plate, a positioning plate, a sealing flange and an electrical connection terminal;

The voltage transformer casing is provided with a through hole, the hollow connecting pipe protrudes from the surface of the voltage transformer casing, and the cavity of the hollow connecting pipe communicates with the through hole; the support The plate is fixed on the inner wall of the hollow connecting pipe, the support plate is provided with a guide groove, the positioning plate is set in the guide groove, the humidity detector is fixed on the positioning plate, and the positioning plate can be along the the guide groove moves to drive the humidity detector to move in the cavity of the hollow connecting pipe;

The sealing flange is connected to one end of the hollow connection pipe away from the voltage transformer housing for sealing the hollow connection pipe; the electrical connection terminal is arranged on the sealing flange, and the electrical connection The connection terminal has a functional end and a control end, the functional end protrudes into the cavity of the hollow connecting pipe, the control end protrudes in a direction away from the hollow connecting pipe, the functional end is connected to the humidity detection The controller is electrically connected, and the control terminal is used for electrical connection with the external controller.

In one embodiment, the support plate has an installation part and a support part, the installation part is fixed on the inner wall of the hollow connecting pipe, and the support part protrudes from the installation part for supporting the positioning the board, the guide groove is arranged on the support part.

In one of the embodiments, the support portion is parallel to the axis of the hollow connecting pipe.

In one embodiment, the positioning plate is provided with a positioning card slot, and the humidity detector is clipped in the positioning card slot.

In one embodiment, the groove wall of the positioning card groove is perpendicular to the axis of the hollow connecting pipe.

In one embodiment, the positioning card slot extends to the inside of the voltage transformer housing, and the detection end of the humidity detector is clipped into the positioning card slot.

In one embodiment, the positioning plate has a raised portion, and the raised portion is connected to the support plate for protruding the positioning slot out of the support plate.

In one embodiment, the length of the guide groove is 75mm˜85mm.

In one embodiment, the length of the hollow connecting pipe is 18cm-25cm.

In one embodiment, the voltage transformer for simulating the detection of the humidity of SF ₆ gas further includes a locking plate, the locking plate is provided with a locking slot, and both ends of the locking plate are fixed to the A positioning plate, wherein the locking groove covers the surface of the humidity detector.

In the above-mentioned voltage transformer for simulating the detection of SF ₆ gas humidity, the humidity detector can be set to the hollow connection mainly through the setting of the hollow connecting pipe, the humidity detector, the support plate, the positioning plate, the sealing flange and the electrical connection terminal. inside the cavity of the tube. In addition, through the setting of the sealing flange, the voltage transformer housing and the hollow connecting pipe can be sealed to avoid the leakage of SF ₆ gas, maintain the sealing performance of the voltage transformer, and enable the voltage transformer to meet the sealing requirements. Since the cavity of the hollow connecting pipe is connected with the through hole on the voltage transformer housing, the humidity information of the SF ₆ gas inside the voltage transformer housing can be detected and acquired by the humidity detector. When using the above voltage transformer for simulating the detection of SF gas humidity, fix the humidity detector _on the positioning plate, install the positioning plate in the guide groove on the support plate, and connect the humidity detector with the function of the electrical connection terminal The terminals are electrically connected, and the hollow connecting pipe and the voltage transformer housing are sealed through the sealing flange. Then the control end of the electrical connection terminal is electrically connected to the external controller, and the external controller is used to control the humidity detector or receive and display the humidity information of SF ₆ gas detected by the humidity detector. The humidity and performance are simulated to establish the relationship between the humidity of SF ₆ gas and the performance of the voltage transformer, so that the staff can quickly check whether the fault of the voltage transformer is caused by humidity, and improve the troubleshooting efficiency of the voltage transformer. Further, through the movement of the positioning plate in the guide groove of the support plate, the position of the humidity detector can be controlled, and then the humidity of different positions inside the voltage transformer shell can be detected, which is beneficial to improve the humidity information of SF ₆ gas. detection accuracy.

Description of drawings

₁ is a schematic structural diagram of a voltage transformer for simulating detection of SF gas humidity in an embodiment of the present invention;

Fig. 2 is the top view of the voltage transformer corresponding to Fig. ₁ for simulating detection of SF gas humidity;

Fig. 3 is the internal schematic diagram of the hollow connecting pipe of the voltage transformer corresponding to Fig. ₁ for simulating detection of SF gas humidity;

4 is a schematic structural diagram of a support plate of a voltage transformer corresponding to FIG. ₁ for simulating detection of SF gas humidity, wherein (a) is a front view, and (b) is a bottom view;

5 is a schematic structural diagram of a positioning plate of a voltage transformer for simulating detection of SF gas humidity corresponding to FIG. ₁ , wherein (a) is a front view, and (b) is a bottom view;

FIG. 6 is a schematic structural diagram of a locking plate of a voltage transformer for simulating detection of SF ₆ gas humidity corresponding to FIG. 1 , wherein (a) is a front view and (b) is a bottom view.

Description of marks in the figure:

100. Potential transformer for simulating detection of SF ₆ gas humidity; 101. Potential transformer housing; 102. Connection flange; 1021. Connection flange fixing hole; 103. Hollow connection pipe; 1031. Fixed seat; 104, sealing flange; 1041, sealing flange fixing hole; 105, electrical connection terminal; 1051, functional end; 106, adsorber; 107, globe valve; 108, self-sealing joint; 109, protective cap; 110, insulator; 201, humidity Detector; 202, support plate; 2021, installation part; 2022, support part; 20221, guide groove; 203, positioning plate; 2031, positioning slot; 2032, booster part; 204, locking plate; 2041, locking card slot.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIGS. 1 to 6 , an embodiment of the present invention provides a voltage transformer 100 for simulating detection of the humidity of SF ₆ gas. The voltage transformer 100 for simulating the detection of SF ₆ gas humidity includes a voltage transformer housing 101 , a hollow connecting pipe 103 , a humidity detector 201 , a support plate 202 , a positioning plate 203 , a sealing flange 104 and an electrical connection terminal 105 . The voltage transformer housing 101 is provided with a through hole (not shown in the figure), the hollow connecting tube 103 protrudes from the surface of the voltage transformer housing 101, and the cavity of the hollow connecting tube 103 communicates with the through hole; the support plate 202 is fixed on the inner wall of the hollow connecting pipe 103, the support plate 202 is provided with a guide groove 20221, the positioning plate 203 is set in the guide groove 20221, the humidity detector 201 is fixed on the positioning plate 203, and the positioning plate 203 can move along the guide groove 20221 In order to drive the humidity detector 201 to move in the cavity of the hollow connecting pipe 103 . The sealing flange 104 is connected to the end of the hollow connection pipe 103 away from the voltage transformer housing 101 for sealing the hollow connection pipe 103; the electrical connection terminal 105 is arranged on the sealing flange 104, and the electrical connection terminal 105 has a functional end 1051 and a The control end (not shown in the figure), the functional end 1051 extends into the cavity of the hollow connecting pipe 103, the control end extends in the direction away from the hollow connecting pipe 103, and the functional end 1051 is electrically connected with the humidity detector 201 to control the The terminal is used for electrical connection with the external controller.

In the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas in this embodiment, the connection between the hollow connection pipe 103 , the humidity detector 201 , the support plate 202 , the positioning plate 203 , the sealing flange 104 and the electrical connection terminal 105 is mainly used. Setting, the humidity detector 201 can be arranged inside the cavity of the hollow connecting pipe 103 . In addition, through the arrangement of the sealing flange 104, the voltage transformer housing 101 and the hollow connecting pipe 103 can be sealed to avoid the leakage of _SF6 gas, maintain the sealing performance of the voltage transformer, and enable the voltage transformer to meet the sealing requirements. Since the cavity of the hollow connecting pipe 103 communicates with the through hole on the voltage transformer housing 101 , the humidity information of the SF ₆ gas inside the voltage transformer housing 101 can be detected and acquired by the humidity detector 201 . Using the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas in this embodiment, the humidity detector 201 is fixed on the positioning plate 203, the positioning plate 203 is installed in the guide groove 20221 on the support plate 202, and the humidity The detector 201 is electrically connected to the functional end 1051 of the electrical connection terminal 105 , and the hollow connection pipe 103 and the voltage transformer housing 101 are sealed by the sealing flange 104 . Then, the control end of the electrical connection terminal 105 is electrically connected to the external controller, and the external controller controls the humidity detector 201 or receives and displays the humidity information of the _SF gas detected by the humidity detector 201, so that the voltage mutual inductance can be measured. The humidity and performance inside the transformer are simulated to establish the relationship between the humidity of SF ₆ gas and the performance of the voltage transformer, so that the staff can quickly check whether the fault of the voltage transformer is caused by the humidity, and improve the troubleshooting efficiency of the voltage transformer. . Further, through the movement of the positioning plate 203 in the guide groove 20221 on the support plate 202, the position of the humidity detector 201 can be controlled, and then the humidity at different positions inside the voltage transformer housing 101 can be detected, which is beneficial to improve the Accuracy of SF ₆ gas humidity information detection.

Referring to FIG. 4 again, in a specific example, the support plate 202 has a mounting portion 2021 and a support portion 2022 , the mounting portion 2021 is fixed on the inner wall of the hollow connecting pipe 103 , and the support portion 2022 extends from the mounting portion 2021 for supporting The positioning plate 203 and the guide groove 20221 are arranged on the support portion 2022 . Further, the support portion 2022 is parallel to the axis of the hollow connecting pipe 103 . By disposing the mounting portion 2021 , the support portion 2022 can protrude from the inner wall of the hollow connecting pipe 103 to avoid interference with the inner wall of the hollow connecting pipe 103 , which is beneficial to improve the installation stability of the humidity detector 201 . Still further, the support portion 2022 is vertically arranged with the mounting portion 2021 .

Specifically, the length of the guide groove 20221 is 75mm˜85mm. That is, the movement stroke of the positioning plate 203 along the guide groove 20221 is 75mm˜85mm. Optionally, the length of the guide groove 20221 is 75mm, 76mm, 77mm, 78mm, 79mm, 80mm, 81mm, 82mm, 83mm, 84mm or 85mm.

Referring to FIG. 5 again, in a specific example, the positioning plate 203 is provided with a positioning slot 2031 , and the humidity detector 201 is clipped into the positioning slot 2031 . The setting of the positioning card slot 2031 can make the humidity detector 201 more stably installed on the positioning plate 203 . Further, the groove wall of the positioning groove 2031 is perpendicular to the axis of the hollow connecting pipe 103 . In this way, the parallel arrangement relationship between the humidity detector 201 and the inner wall of the hollow connecting pipe 103 can be further maintained, so that the movement of the humidity detector 201 is smoother.

In a specific example, the positioning slot 2031 extends to the inside of the voltage transformer housing 101 , and the detection end of the humidity detector 201 is clipped into the positioning slot 2031 . At this time, the humidity information of the SF ₆ gas inside the voltage transformer housing 101 can be directly detected by the humidity detector 201 .

Referring again to FIG. 5 , in a specific example, the positioning plate 203 has a raised portion 2032 , and the raised portion 2032 is connected to the support plate 202 for making the positioning slot 2031 protrude from the support plate 202 . The positioning slot 2031 can be protruded from the support plate 202 by the arrangement of the raised portion 2032 , which can effectively prevent the humidity detector 201 from colliding and interfering with the components in the hollow connecting pipe 103 during the movement. Further, the raised portion 2032 is fixedly connected to the support portion 2022 of the support plate 202 . It can be understood that, the booster portion 2032 can be fixedly connected to the support portion 2022 of the support plate 202 through the cooperation of the screw and nut assemblies.

Please refer to FIG. 3 and FIG. 6 again. In a specific example, the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas further includes a locking plate 204. The locking plate 204 is provided with a locking slot 2041 to lock the Both ends of the tightening plate 204 are fixed on the positioning plate 203 , and the locking slot 2041 covers the surface of the humidity detector 201 . The humidity detector 201 can be more stably fixed on the positioning plate 203 by the setting of the locking plate 204 . Further, the position of the humidity detector 201 can be further fixed by the clamping action of the locking groove 2041 . Specifically, both ends of the locking plate 204 are fixed on the raised portion 2032 of the positioning plate 203 . It can be understood that both ends of the locking plate 204 can be fixedly connected to the raised portion 2032 of the positioning plate 203 through the cooperation of the screw and nut assemblies.

In a specific example, the locking slot 2041 and the positioning slot 2031 are staggered. Further, the locking slot 2041 and the positioning slot 2031 are completely staggered.

Please refer to FIG. 1 to FIG. 3 again. In a specific example, the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas further includes a connecting flange 102 . Outside the transformer housing 101 , the connecting flange 102 is fixedly connected to one end of the hollow connecting tube 103 close to the voltage transformer housing 101 for fixing the hollow connecting tube 103 to the voltage transformer housing 101 . The hollow connection pipe 103 can be connected to the outside of the voltage transformer housing 101 more conveniently through the arrangement of the connection flange 102 .

Further, the connecting flange 102 and the hollow connecting pipe 103 are integrally formed. The integrated structure of the connecting flange 102 and the hollow connecting pipe 103 is convenient for processing and forming, and can also effectively improve the air tightness between the connecting flange 102 and the hollow connecting pipe 103, and also facilitate the connection with the voltage transformer housing 101. The air tightness between the hollow connecting pipe 103 and the voltage transformer housing 101 is improved.

In a specific example, one end of the hollow connecting pipe 103 close to the sealing flange 104 is provided with a fixing seat 1031 , and the fixing seat 1031 protrudes from the outer edge of the connecting pipe for connecting with the sealing flange 104 . The hollow connecting pipe 103 and the sealing flange 104 can be stably connected by the arrangement of the fixing seat 1031 , and then the hollow connecting pipe 103 and the sealing flange 104 can be fixedly connected. It can be understood that the fixing seat 1031 protrudes from the outer edge of the hollow connecting pipe 103 , and can be matched and connected with the sealing flange 104 more conveniently. Optionally, the outer diameter of the fixing seat 1031 is equal to the outer diameter of the sealing flange 104 .

Further, the fixing seat 1031 and the hollow connecting pipe 103 are integrally formed. The integrated structure of the fixed seat 1031 and the hollow connecting pipe 103 is convenient for processing and molding, and can also effectively improve the air tightness between the fixed seat 1031 and the hollow connecting pipe 103, and also facilitate the connection with the sealing flange 104 to improve the voltage transformer. The overall tightness of the housing 101 , the hollow connecting pipe 103 , the fixing seat 1031 and the sealing flange 104 .

In a specific example, the outer diameter of the sealing flange 104 is smaller than the outer diameter of the connecting flange 102 . It can be understood that, the sealing flange 104 and the connecting flange 102 are both provided with a plurality of fixing holes for the fixing members to pass through. When the sealing flange 104 and the connecting flange 102 are installed, the connecting flange 102 is installed on the voltage transformer housing 101 by inserting a fixing member in the fixing hole, and the sealing flange 102 is installed by inserting the fixing member in the fixing hole. 104 is installed on the connecting pipe. For the purpose of distinction, the fixing hole on the connecting flange 102 is the connecting flange fixing hole 1021 , and the fixing hole on the sealing flange 104 is the sealing flange fixing hole 1041 . It can be understood that the fixing member may be a screw rod, a screw, a pin or the like.

In a specific example, the connecting flange fixing holes 1021 on the connecting flange 102 are distributed around the center of the connecting flange 102 , and the sealing flange fixing holes 1041 on the sealing flange 104 are distributed around the center of the sealing flange 104 . Further, the connecting flange fixing holes 1021 on the connecting flange 102 are evenly distributed around the center of the connecting flange 102 , and the sealing flange fixing holes 1041 on the sealing flange 104 are evenly distributed around the center of the sealing flange 104 . Still further, the connecting flange fixing holes 1021 on the connecting flange 102 are even in number, and the sealing flange fixing holes 1041 on the sealing flange 104 are even in number. Still further, the number of the sealing flange fixing holes 1041 on the sealing flange 104 is twice the number of the connecting flange fixing holes 1021 on the connecting flange 102 . Still further, the distance between two adjacent sealing flange fixing holes 1041 on the sealing flange 104 is half the distance between the two adjacent connecting flange fixing holes 1021 on the connecting flange 102 . Furthermore, the connection flange fixing holes 1021 on the connection flange 102 are evenly distributed around the electrical connection terminals 105 , and the sealing flange fixing holes 1041 on the sealing flange 104 are evenly distributed around the electrical connection terminals 105 .

In the voltage transformer 100 for simulating detection of the humidity of SF ₆ gas shown in FIG. 1 , the number of the connecting flange fixing holes 1021 on the connecting flange 102 is 4, and the number of the sealing flange fixing holes on the sealing flange 104 is 4 The number of 1041 is 8. The four connecting flange fixing holes 1021 on the connecting flange 102 are evenly distributed around the electrical connection terminals 105 , and the eight sealing flange fixing holes 1041 on the sealing flange 104 are evenly distributed around the electrical connecting terminals 105 .

In a specific example, the length of the hollow connecting pipe 103 is 18 cm˜25 cm. Optionally, the length of the hollow connecting tube 103 is 18 cm, 19 cm, 20 cm, 21 cm, 22 cm, 23 cm, 24 cm or 25 cm. Preferably, the length of the hollow connecting pipe 103 is 20 cm. It can be understood that the length of the hollow connecting pipe 103 can be arbitrarily selected from the length ranges and length points listed above, that is, the length of the hollow connecting pipe 103 can be any length from 18cm to 25cm, and is not limited to 18cm. , 19cm, 20cm, 21cm, 22cm, 23cm, 24cm or 25cm.

Referring to FIG. 1 again, in a specific example, the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas further includes an adsorber 106 , and the adsorber 106 is located inside the voltage transformer housing 101 . The setting of the adsorber 106 can adsorb moisture and/or impurity gas inside the voltage transformer, and maintain the stable state of the SF ₆ gas inside the voltage transformer. It will be appreciated that adsorber 106 is filled with adsorbent.

Further, the adsorber 106 is closer to the top of the voltage transformer housing 101 than the through hole. The adsorber 106 is arranged on the top of the voltage transformer housing 101 closer to the through hole, which facilitates the installation of the adsorber 106 and can effectively maintain the installation regularity of the voltage transformer 100 for simulating the detection of SF ₆ gas humidity. In addition, the adsorber 106 is closer to the top of the voltage transformer housing 101 than the through hole, and is located in a position where there are no other electrical components inside the voltage transformer housing 101 , and does not interfere with the normal operation of other electrical components, so that the adsorber 106 can be fully utilized. effect.

Referring to FIG. 1 again, in a specific example, the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas further includes an insulator 110 , and the insulator 110 is located on the top of the voltage transformer housing 101 . The insulator 110 is located on the top of the voltage transformer housing 101 to improve the insulation between the inside of the voltage transformer housing 101 and the external environment. Further, the insulator 110 is a pot insulator.

In a specific example, the voltage transformer 100 for simulating the detection of the humidity of SF ₆ gas further includes a shut-off valve 107, the shut-off valve 107 is located outside the voltage transformer housing 101, and the shut-off valve 107 is used to realize the voltage transformer housing The penetration and isolation of the interior and exterior of 101. The setting of the shut-off valve 107 can be used to realize the addition or discharge of the SF ₆ gas inside the voltage transformer housing 101 . In addition, the shut-off valve 107 has good sealing performance, and can effectively maintain the sealing performance of the voltage transformer housing 101 .

It can be understood that the voltage transformer 100 for simulating the detection of the humidity of the SF ₆ gas further includes a self-sealing joint 108 , and the self-sealing joint 108 is installed on the shut-off valve 107 . The arrangement of the self-sealing joint 108 can further improve the sealing performance of the shut-off valve 107 , and further, the voltage transformer used for simulating the detection of the humidity of the SF ₆ gas also includes a protective cap 109 . The protective cap 109 is arranged on the self-sealing joint 108 . The protective cap 109 can make the self-sealing joint 108 more stably installed on the shut-off valve 107 . It can be understood that the protective cap 109 can be, but is not limited to, a nut.

It can be understood that the voltage transformer 100 for simulating the detection of the humidity of the SF ₆ gas also includes the indispensable electrical components of the voltage transformer, so as to better simulate the real use situation of the voltage transformer.

It can also be understood that the voltage transformer 100 for simulating the detection of the humidity of _{SF 6} gas also includes a plurality of connection components, such as screw and nut connection components. The components in the device 100 that need to be connected are connected.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be based on the appended claims, and the description and drawings can be used to explain the content of the claims.

Claims (10)

1. a voltage transformer for simulating detection of _SF gas humidity, is characterized in that, comprises voltage transformer housing, hollow connecting pipe, humidity detector, support plate, positioning plate, sealing flange and electrical connection terminal; The voltage transformer casing is provided with a through hole, the hollow connecting pipe protrudes from the surface of the voltage transformer casing, and the cavity of the hollow connecting pipe communicates with the through hole; the support The plate is fixed on the inner wall of the hollow connecting pipe, the support plate is provided with a guide groove, the positioning plate is set in the guide groove, the humidity detector is fixed on the positioning plate, and the positioning plate can be along the the guide groove moves to drive the humidity detector to move in the cavity of the hollow connecting pipe; The sealing flange is connected to one end of the hollow connection pipe away from the voltage transformer housing for sealing the hollow connection pipe; the electrical connection terminal is arranged on the sealing flange, and the electrical connection The connection terminal has a functional end and a control end, the functional end protrudes into the cavity of the hollow connecting pipe, the control end protrudes in a direction away from the hollow connecting pipe, the functional end is connected to the humidity detection The controller is electrically connected, and the control terminal is used for electrical connection with the external controller. 2 . The voltage transformer for simulating the detection of SF ₆ gas humidity according to claim 1 , wherein the support plate has a mounting portion and a support portion, and the mounting portion is fixed on the inner wall of the hollow connecting pipe. 3 . , the support portion protrudes from the mounting portion to support the positioning plate, and the guide groove is arranged on the support portion. 3 . The voltage transformer for simulating detection of the humidity of SF ₆ gas according to claim 2 , wherein the support portion is parallel to the axis of the hollow connecting pipe. 4 . 4. The voltage transformer for simulating detection of the humidity of SF ₆ gas according to claim 1, wherein the positioning plate is provided with a positioning slot, and the humidity detector is clamped to the positioning slot Inside. 5 . The voltage transformer for simulating detection of SF ₆ gas humidity according to claim 4 , wherein the groove wall of the positioning slot is perpendicular to the axis of the hollow connecting pipe. 6 . 6 . The voltage transformer for simulating the detection of SF ₆ gas humidity according to claim 4 , wherein the positioning slot extends to the inside of the voltage transformer housing, and the humidity detector detects The end is clamped in the positioning slot. 7 . The voltage transformer for simulating the detection of SF ₆ gas humidity according to claim 4 , wherein the positioning plate has a raised portion, and the raised portion is connected to the support plate for making The positioning slot protrudes from the support plate. 8 . The voltage transformer for simulating the detection of the humidity of SF ₆ gas according to claim 1 , wherein the length of the guide groove is 75mm˜85mm. 9 . 9 . The voltage transformer for simulating the humidity detection of SF ₆ gas according to claim 1 , wherein the length of the hollow connecting pipe is 18 cm to 25 cm. 10 . 10. The voltage transformer for simulating the detection of humidity of SF ₆ gas according to any one of claims 1 to 8, characterized in that it further comprises a locking plate, and the locking plate is provided with a locking slot , both ends of the locking plate are fixed on the positioning plate, and the locking slot covers the surface of the humidity detector.

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