CN112735699B - Support insulator and gas-insulated bus using same - Google Patents

Abstract

The invention relates to a support insulator and a gas-insulated bus using the support insulator, wherein the support insulator comprises a support body, and a conductive rod hole for inserting a conductive rod is formed in the support body; a finger groove for accommodating the elastic finger is formed in the conductive rod hole; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the combined force of the friction forces between the elastic contact finger of more than two supporting insulators matched with the conducting rod and the conducting rod is not smaller than the gravity of the corresponding conducting rod; at least three mounting holes are formed in the support body at intervals along the circumferential direction of the support body, and telescopic pieces capable of moving along the radial direction of the support body are respectively arranged in each mounting hole; the telescopic piece is provided with an inserting part which is used for being inserted into the blind hole of the shell of the gas-insulated bus and is in supporting fit with the hole wall of the blind hole; the support body is provided with an operation hand hole for adjusting the position of the telescopic piece and improving the assembly efficiency.

Description

Support insulator and gas insulated busbar using the support insulator

technical field

The invention relates to a supporting insulator and a gas insulated bus using the supporting insulator.

Background technique

In the prior art, the conductive rods in the gas-insulated metal-enclosed switchgear (GIS) or the gas-insulated transmission line (GIL) are all supported and positioned in the casing by insulators to form a gas-insulated bus. Specifically, when the conductive rods are vertically arranged, the insulators supporting and positioning the conductive rods include end insulators and internal insulators, wherein the end insulators are fixed at the ends of the casing, and the internal insulators are arranged inside the casing; the ends of the conductive rods Conductive connection between the end and the conductor on the end insulator, the vertical support of the conductive rod is realized through the end insulator, the internal insulator is clamped by the top wire spring on the conductive rod, and the radial positioning of the conductive rod is carried out through the internal insulator, the end Insulators and internal insulators are indispensable. When assembling a gas-insulated busbar, it is necessary to axially position the guide rod through the end insulator first, and then realize the positioning of the internal insulator in the housing through the conductive rod. The assembly efficiency of the gas-insulated busbar is low and the assembly cost is high.

Contents of the invention

The object of the present invention is to provide a supporting insulator, so that when the conducting rods are vertically arranged, the supporting insulator can simultaneously realize the radial and axial limit of the conducting rods in the housing, improve the assembly efficiency of the gas insulated busbar, and reduce the Assembly cost of the gas insulated busbar; the object of the present invention is to provide a gas insulated busbar to improve the assembly efficiency of the gas insulated busbar and reduce the assembly cost of the gas insulated busbar.

The supporting insulator of the present invention adopts the following technical scheme:

The supporting insulator includes a supporting body, the supporting body is provided with a conductive rod hole for the conductive rod to be inserted into; the conductive rod hole is provided with a contact finger groove for accommodating the elastic contact finger; when the conductive rod is inserted into the conductive rod hole and vertically When placed vertically, the friction force between the elastic contact fingers of a supporting insulator that cooperates with the conductive rod and the conductive rod or the resultant force of the friction force between the elastic contact fingers of two or more supporting insulators that cooperate with the conductive rod and the conductive rod is not equal. Less than the gravity of the corresponding conductive rod;

The supporting body is provided with at least three mounting holes at intervals along the circumferential direction of the supporting body, each mounting hole is respectively equipped with a telescopic piece that can move radially along the supporting body, and a radial locking mechanism is provided between the telescopic piece and the supporting body; The telescopic piece is provided with an insertion part for inserting into the blind hole of the shell of the gas insulated busbar and supporting and matching with the hole wall of the blind hole;

The support body is provided with an operating hand hole for adjusting the position of the telescopic element.

The beneficial effects of the present invention are: when assembling the gas insulated busbar, first insert the conductive rod into the corresponding hole of the conductive rod and assemble the elastic contact finger between the contact finger slot and the conductive rod, and at the same time adjust the radial position of the telescopic member on the supporting body , to ensure that the expansion piece will not affect the support insulator into the gas insulated bus shell; Insert it into the blind hole of the shell; then place the assembled gas-insulated bus bar vertically, and the supporting insulator is positioned in the shell along the axial direction of the shell through the telescopic piece, and the conductive rod is moved by the friction between the conductive rod and the elastic contact finger. It is limited to the axial setting position of the shell; the hole wall of the conductive rod hole limits the conductive rod to the radial setting position of the shell, and the supporting insulator of the present invention can realize the limit of the conductive rod in the radial and axial directions of the shell at the same time , which plays the role of internal insulators and end insulators in the prior art, only need to set support insulators inside the housing to meet the positioning requirements of the conductive rods, improve the assembly efficiency of the gas insulated busbars, and reduce the assembly efficiency of the gas insulated busbars cost.

As a preferred technical solution, the telescopic element is threadedly connected to the support body, and the radial locking mechanism is composed of the telescopic element and the thread on the support body or otherwise configured;

The inner end of the telescopic element is provided with a telescopic element adjustment structure, which is used to cooperate with the telescopic element adjustment tool to screw the telescopic element so that the outer end of the telescopic element is screwed into or out of the installation hole on the supporting body.

Beneficial effects: the telescopic part is threadedly connected to the support body, and at the same time the position adjustment of the telescopic part is realized through the telescopic part adjustment structure, the position adjustment of the telescopic part is convenient and the continuous adjustment of the position of the telescopic part can be realized.

As a preferred technical solution, the telescopic member includes a sleeve;

A ball seat and a ball rolling on the ball seat are arranged in the sleeve;

A gland is fixed at the outer end opening of the sleeve body, and the gland is provided with a ball hole for the ball to protrude from the outside of the gland. The diameter of the outer end opening of the ball hole is smaller than the diameter of the ball to prevent the ball from out of sleeve;

A support portion is provided in the sleeve body to provide support for the ball seat towards the outer end of the sleeve;

The insertion part is formed by the part where the ball protrudes from the gland or is formed by the outer end of the casing.

Beneficial effect: in this way, when the supporting insulator equipped with the conductive rod is pushed into the casing, the ball outside the telescopic casing plays the role of roller skating, which facilitates the pushing of the supporting insulator and the conductive rod into the casing, and at the same time, avoids the additional setting of roller skating The structure further saves the assembly cost of the gas insulated busbar.

As a preferred technical solution, the ball seat moves axially along the sleeve body and is assembled in the sleeve body;

The outside of the gland is provided with an external thread for threaded connection with the casing; the gland is also provided with a gland adjustment structure for cooperating with the gland adjustment tool to screw the gland so that the gland is screwed in or Unscrew the casing.

Beneficial effect: the position of the ball seat and the gland can be adjusted, so that the size of the ball protruding from the outer end of the casing can be adjusted according to the needs, so that the support insulator can adapt to the assembly of the conductive rod in the shell with different inner diameters, and the versatility of the support insulator is increased.

As a preferred technical solution, the insertion part is formed by the outer end of the casing, and the insertion part is provided with an external thread for threaded connection with a blind hole of a shell of the gas-insulated busbar.

Beneficial effects: the insertion part is threadedly connected to the casing, so that the telescopic element can be stably positioned on the casing, and the positioning stability of the conductive rod in the casing can be ensured.

The gas insulated bus bar of the present invention adopts the following technical scheme:

The gas insulated busbar includes a shell, the shell is provided with a blind hole extending radially along the shell, and the opening of the blind hole is arranged on the inner wall of the shell;

The housing is provided with a conductive rod;

The housing is also provided with a supporting insulator supporting the conductive rod; the supporting insulator includes a supporting body, and the supporting body is provided with a conductive rod hole for the conductive rod to be inserted into; the conductive rod hole is provided with a finger groove , there is an elastic contact finger in the contact finger groove; when the conductive rod is inserted into the hole of the conductive rod and placed vertically, the friction force between the elastic contact finger of a supporting insulator that cooperates with the conductive rod and the conductive rod or cooperates with the conductive rod The resultant force of friction between the elastic contact fingers of two or more supporting insulators and the conductive rod is not less than the gravity of the corresponding conductive rod;

The supporting body is provided with at least three mounting holes at intervals along the circumferential direction of the supporting body, each mounting hole is respectively equipped with a telescopic piece that can move radially along the supporting body, and a radial locking mechanism is provided between the telescopic piece and the supporting body; The telescopic piece is provided with an insertion part for inserting into the blind hole and supporting and matching with the hole wall of the blind hole;

The support body is provided with an operating hand hole for adjusting the position of the telescopic element.

The beneficial effects of the present invention are: when assembling the gas insulated busbar, first insert the conductive rod into the corresponding hole of the conductive rod and assemble the elastic contact finger between the contact finger slot and the conductive rod, and at the same time adjust the radial position of the telescopic member on the supporting body , to ensure that the expansion piece will not affect the support insulator into the gas insulated bus shell; Insert it into the blind hole of the shell; then place the assembled gas-insulated bus bar vertically, and the supporting insulator is positioned in the shell along the axial direction of the shell through the telescopic piece, and the conductive rod is moved by the friction between the conductive rod and the elastic contact finger. It is limited to the axial setting position of the shell; the hole wall of the conductive rod hole limits the conductive rod to the radial setting position of the shell, and the supporting insulator of the present invention can realize the limit of the conductive rod in the radial and axial directions of the shell at the same time , which plays the role of internal insulators and end insulators in the prior art, only need to set support insulators inside the housing to meet the positioning requirements of the conductive rods, improve the assembly efficiency of the gas insulated busbars, and reduce the assembly efficiency of the gas insulated busbars cost.

As a preferred technical solution, the telescopic element is threadedly connected to the support body, and the radial locking mechanism is composed of the telescopic element and the thread on the support body or otherwise configured;

The inner end of the telescopic element is provided with a telescopic element adjustment structure, which is used to cooperate with the telescopic element adjustment tool to screw the telescopic element so that the outer end of the telescopic element is screwed into or out of the installation hole on the supporting body. .

Beneficial effects: the telescopic part is threadedly connected to the support body, and at the same time the position adjustment of the telescopic part is realized through the telescopic part adjustment structure, the position adjustment of the telescopic part is convenient and the continuous adjustment of the position of the telescopic part can be realized.

As a preferred technical solution, the telescopic member includes a sleeve;

A ball seat and a ball rolling on the ball seat are arranged in the sleeve;

A gland is fixed at the outer end opening of the sleeve body, and the gland is provided with a ball hole for the ball to protrude from the outside of the gland. The diameter of the outer end opening of the ball hole is smaller than the diameter of the ball to prevent the ball from out of sleeve;

A support portion is provided in the sleeve body to provide support for the ball seat towards the outer end of the sleeve;

The insertion part is formed by the part where the ball protrudes from the gland or is formed by the outer end of the casing.

Beneficial effect: in this way, when the supporting insulator equipped with the conductive rod is pushed into the casing, the ball outside the telescopic casing plays the role of roller skating, which facilitates the pushing of the supporting insulator and the conductive rod into the casing, and at the same time, avoids the additional setting of roller skating The structure further saves the assembly cost of the gas insulated busbar.

As a preferred technical solution, the ball seat moves axially along the sleeve body and is assembled in the sleeve body;

The outside of the gland is provided with an external thread for threaded connection with the casing; the gland is also provided with a gland adjustment structure for cooperating with the gland adjustment tool to screw the gland so that the gland is screwed in or Unscrew the casing.

Beneficial effect: the position of the ball seat and the gland can be adjusted, so that the size of the ball protruding from the outer end of the casing can be adjusted according to the needs, so that the support insulator can adapt to the assembly of the conductive rod in the shell with different inner diameters, and the versatility of the support insulator is increased.

As a preferred technical solution, the insertion part is formed by the outer end of the casing, and the insertion part is screwed to the blind hole.

Beneficial effects: the insertion part is threadedly connected to the casing, so that the telescopic element can be stably positioned on the casing, and the positioning stability of the conductive rod in the casing can be ensured.

Description of drawings

Fig. 1 is a perspective view of a specific embodiment 1 of a supporting insulator of the present invention;

Fig. 2 is the front view of specific embodiment 1 of the supporting insulator of the present invention;

Fig. 3 is the A-A direction sectional view of Fig. 2;

Fig. 4 is the bottom view of specific embodiment 1 of the supporting insulator of the present invention;

Fig. 5 is the B-B direction sectional view of Fig. 4;

Fig. 6 is a perspective view of the universal wheel in Fig. 1;

Fig. 7 is the front view of universal wheel in Fig. 1;

Fig. 8 is a C-C cross-sectional view of Fig. 7;

Fig. 9 is the front view of the insulator in Fig. 1;

Fig. 10 is a D-D sectional view of Fig. 9;

Fig. 11 is a perspective view of the metal ring in Fig. 1;

Fig. 12 is a perspective view of a specific embodiment of the gas insulated bus bar of the present invention (elastic contact fingers are not shown);

Fig. 13 is a front view of a specific embodiment of the gas insulated bus bar of the present invention;

Fig. 14 is the E-E direction sectional view of Fig. 13;

Figure 15 is a partial enlarged view at G in Figure 14;

Figure 16 is a sectional view taken along the line F-F of Figure 13;

FIG. 17 is a partially enlarged view at H in FIG. 16 .

In the figure: 1-ball; 2-gland; 3-support tile; 4-ball; 5-compression spring; 6-compression spring seat; 7-adjustment hole; 8-sleeve; body; 11-conductive rod; 12-fixed block; 13-metal ring; 14-insulator; 15-copper row; 21-wall; 22-flange; 71-polygonal section; Aperture section; 82-small aperture section; 83-step surface; 91-flange; 100-universal wheel; 101-threaded hole; Finger groove; 106-blind hole.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that relative terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The characteristics and performance of the present invention will be described in further detail below in conjunction with the examples.

Specific embodiment 1 of the supporting insulator of the present invention:

As shown in Figures 1 to 5, the supporting insulator includes a supporting body 10, the supporting body 10 in this embodiment includes the insulator 14 shown in Figures 9 and 10, and the metal ring 13 shown in Figure 11, the metal ring 13 specifically The metal ring 13 is embedded on the outer periphery of the insulator 14 . The metal ring 13 is provided with a threaded hole 101, and the threaded hole 101 constitutes the installation hole of the support body 10 in this embodiment.

A central conductor 104 is embedded inside the insulator 14, and a conductive rod hole 103 is provided in the middle of the central conductor 104 for the insertion of the conductive rod of the gas-insulated bus bar. The central conductor 14 is provided with a contact finger groove 105 for accommodating spring contacts. The insulator 14 is also provided with an operating hand hole 102 , and the threaded hole 101 communicates with the operating hand hole 102 when the metal ring 13 is embedded on the insulator 14 .

The above-mentioned insulator 14 is formed by pouring epoxy resin. When making the support body 10, the central conductor 104 and the metal ring 13 are first fixed at the set positions, and then epoxy resin is poured inside the metal ring 13. After the epoxy resin solidifies An insulator 14 is formed, the metal ring 13 is embedded and fixed on the insulator 14 , and the central conductor 104 is embedded in the insulator 14 .

The supporting insulator also includes a universal wheel 100, which constitutes the telescopic element in this embodiment. As shown in Figures 6 to 8, the universal wheel 100 includes a sleeve body 8. In this embodiment, the inner hole of the sleeve body 8 is a stepped hole with a large aperture section 81 and a small aperture section 82, and the outer diameter of the large aperture section 81 is The diameter is greater than the outer diameter of the small aperture section 82. With one end of the casing 8 used to be connected to the support body 10 as the inner end, and one end used to be close to the outer shell of the conductive rod as the outer end, the large-aperture section 81 is arranged near the outer end of the casing 8, and the small-aperture section 82 is disposed near the inner end of the sleeve body 8 . The outer peripheral surface of the large-aperture section 81 is provided with a first external thread (not shown in the figure), which is used for threaded connection with the blind hole of the shell of the gas insulated busbar, and the sleeve 8 is provided with the first external thread. The insertion part in the present embodiment; the outer circumference of the small aperture section 82 is provided with a second external thread, the second external thread is threadedly connected with the threaded hole 101 of the support body 10, and the second external thread and the thread of the threaded hole 101 form simultaneously The radial locking mechanism in this embodiment.

As shown in Figure 8, the universal wheel 100 also includes an arc-shaped support shoe 3, the support shoe 3 moves axially along the sleeve body 8 and is assembled inside the sleeve body 8, and the support shoe 3 is provided with a plurality of balls 4 along its circumference ( Figure 4 shows only one ball), and the ball 1 is rolled on the supporting shoe 3 through the ball 4, and the friction between the ball 1 and the supporting shoe 3 can be reduced by the ball 4. The above-mentioned supporting shoe 3 together with each ball 4 constitutes the ball seat in this embodiment. In order to prevent the ball 4 from protruding from the supporting tile 3, flanges 22 facing the axis of the sleeve body 8 are respectively provided at both ends of the supporting tile 3 in the circumferential direction. The ball 4 is limited, and will not rub against the ball 1 again.

As shown in Figure 8, the universal wheel 100 also includes a gland 2, the gland 2 in this embodiment is screwed to the outer end of the casing 8, the gland 2 is provided with a ball hole, and the ball 1 is exposed to the pressure. The cover 2 is arranged outside, and the diameter of the opening formed by the ball hole at the outer end surface of the gland 2 is smaller than the diameter of the ball 1 to prevent the ball 1 from slipping out of the casing 8 .

The outer end surface of the gland 2 is also provided with a gland adjustment structure. The gland adjustment structure in this embodiment is two connecting holes (not shown in the figure) arranged at intervals along the radial direction of the gland 2. When in use, the gland The adjustment tool is inserted into the two connection holes, and at the same time exerts a force along the circumferential direction of the sleeve body 8 on the two connection holes to rotate the gland 2 to realize the position adjustment of the gland 2 in the axial direction of the sleeve body 8 . The gland adjustment tool in this embodiment can be composed of two rod bodies. When in use, the two rod bodies are respectively inserted into the connecting holes. In order to prevent the rod bodies from rotating in the connecting holes, the connecting holes can be set as polygonal holes. A polygonal structure that fits into a polygonal hole.

As shown in Figure 8, the sleeve body 8 is equipped with a compression spring seat 6. Specifically, the compression spring seat 6 is provided with external threads, and the compression spring seat 6 is threaded inside the sleeve body 8. The compression spring seat 6 and the support tile A compression spring 5 is pressed between the 3, through which the compression spring 5 provides elastic support force towards the outer end of the sleeve body 8 for the support tile 3, and the compression spring 5 constitutes the supporting part in this embodiment. The small-diameter section 82 of the casing 8 can play a role in radially positioning the compression spring 5 .

As shown in Figure 8, the inner side of the gland 2 is provided with a surrounding wall 21 that guides the reciprocating movement of the ball seat. Reciprocating movement for guidance.

As shown in Figure 8, the inner end of the sleeve body 8 in this embodiment is provided with an adjustment hole 7 communicating with the inner hole. The adjustment hole 7 includes a polygonal hole segment 71 and an insertion segment 72 with a polygonal cross section. The polygonal hole segment 71 is far away from the The outer end of the sleeve body 8 is arranged, and the insertion section 72 is arranged near the outer end of the sleeve body 8 . The polygonal hole segment 71 in this embodiment is a regular hexagonal hole segment, which is used to adapt to the telescopic member adjustment tool, so as to screw the sleeve body 8 through the telescopic member adjustment tool to realize the position adjustment of the sleeve body 8 in the radial direction of the support body 10 , the polygonal segment constitutes the adjusting structure of the telescopic member in this embodiment. Specifically, the expansion member adjustment tool can be other adjustment rods with an outer hexagonal structure such as an outer hexagonal wrench.

The end of the compression spring seat 6 far away from the gland 2 is provided with a compression spring seat adjustment structure, which is used to cooperate with the compression spring seat adjustment tool to realize the adjustment of the compression spring seat 6 in the axial direction of the sleeve body 8 . Specifically, the adjustment structure of the compression spring seat is a hexagonal hole (not shown in the figure) provided on the inner end surface of the compression spring seat, and the adjustment tool for the compression spring seat is an external hexagonal wrench adapted to the hexagonal hole. The polygonal hole section 71 and the inserting section 72 form an adjustment hole for the outer hexagonal wrench to extend into the sleeve body 8 .

Above-mentioned inserting section 72 is a circular hole section, and the diameter of inserting section 72 is less than the diameter of the small aperture section 82 of cover body 8, like this, the part that is provided with inserting section 72 of cover body 8 can play a role to clip spring seat 6 The blocking function prevents the compression spring 5 from pushing the compression spring seat 6 out of the sleeve body 8 along the direction towards the inner part of the sleeve body 8 in an unexpected situation.

In addition, when the inner diameter of the shell changes, it is necessary to adjust the length of the ball 1 protruding from the outer end surface of the sleeve body 8. At this time, the compression spring seat 6 can be screwed into the bottom of the small aperture section of the sleeve body 8, so that the compression spring 5 is in a loose state, and then adjust the position of the gland 2 to make the ball 1 in a proper working state. When adjusting the position of the gland 2, the compression spring 5 is in a loose state by adjusting the compression spring seat 6, which is beneficial to the adjustment of the position of the gland 2.

As shown in Fig. 1, Fig. 2 and Fig. 5, there are three conductive rod holes 103 evenly distributed along the circumferential direction of the support body 10 in this embodiment, for the insertion of three-phase conductive rods; There are also three uniformly spaced ones, and each threaded hole 101 is connected with the universal wheel 100 .

The concrete assembly process of universal wheel of the present invention:

During installation, the compression spring seat 6 is first screwed into the sleeve body 8, and then the compression spring 5, the support tile 3, the ball 4 and the ball 1 are loaded in sequence, and finally the gland 2 is screwed onto the sleeve body 8. When the preliminary installation of the universal wheel is completed; after that, the installed universal wheel is loaded into the supporting body 10 to form the supporting insulator shown in Figures 1 to 5, and an operating hand hole 102 is reserved on the supporting insulator for Put in for telescopic part adjustment tool and clip spring seat adjustment tool to regulate sleeve body 8 and clip spring seat 6.

As shown in Fig. 12 to Fig. 17, the gas insulated bus bar includes a shell, which includes a cylinder and a fixing block 12 welded and fixed on the outside of the cylinder. The hole 106, the blind hole in this embodiment is an internally threaded hole.

Before the support insulator is loaded into the shell, use the spring seat adjustment tool to adjust the spring seat 6, so that the spring 5 begins to relax; then rotate the gland 2, the gland 2 presses the ball 1, and the ball 1 drives the ball 4 and the support tile 3 retract into the inner hole of the sleeve body 8, when the support tile 3 touches the step surface 83 between the large aperture section 81 and the lower aperture section of the sleeve body 8, it cannot continue to be screwed inward, and the outer end surface of the gland 2 is located in the sleeve body. The inner side of the outer end surface of the body 8, at this time, most of the ball 1 enters the large-aperture section 81 of the sleeve body 8, and a small part protrudes from the outside of the sleeve body 1; then, insert the three conductive rods 11 on the supporting insulator, and Put the spring contact finger in the contact finger groove 105, and push the support insulator equipped with the conductive rod 11 into the set position in the housing. During this process, the ball 1 protrudes from the outer part of the sleeve body 8 to make the universal wheel 100 play a role of roller skating. ; Afterwards, adjust the sleeve body 8 using the telescopic part adjustment tool, so that the universal wheel 100 starts to unscrew from the support body 10, and the first external thread of the sleeve body 8 is threaded in the blind hole 106 to ensure the support between the insulator and the housing. Stable connection, at this time, the rotation of ball 1 is meaningless.

The support insulator is in a locked state on the housing, and the conductive rod hole 103 on the support insulator can radially position the conductive rod 11. At the same time, a spring contact finger (not shown in the figure) is set in the contact finger groove 105. The spring contact The finger presses the conductive rod 11 along the radial direction of the supporting insulator, so that there is a frictional force along the radial direction of the conductive rod 11 between the spring contact finger of the supporting insulator and the conductive rod 11, and the frictional force is not less than the gravity of the corresponding conductive rod, Make the supporting insulator play the role of limiting the axial direction of the conductive rod 11. Compared with the prior art, it only needs to install the supporting insulator inside the shell to meet the positioning requirements of the conductive rod 11, without setting the end insulator, which improves the The assembly efficiency of the gas-insulated busbar is improved, and the assembly cost of the gas-insulated busbar is reduced.

It should be noted that when the supporting insulator is fixed in the housing, the step surface 83 between the large aperture section 81 and the lower aperture section of the casing 8 and the gland 2 together limit the ball 1 and the supporting shoe 3, so that the ball 1Steady at the set position. Most of the ball 1 retracts into the inside of the sleeve body 8, and a small part protrudes outside the sleeve body 8. While ensuring that the universal wheel 100 plays the role of roller skating, it prevents the ball 1 from extending out of the sleeve body 8 too much and affecting the sleeve body 8. Depth screwed into blind hole 106.

When it is necessary to adjust the pressure spring seat 6 and the sleeve body 8, the above-mentioned operating hand hole 102 is used as an operating window, and the operating hand hole 102 can also be used as a snap-in part for manpower or tools to snap in when carrying the supporting insulator; the above-mentioned The busbar can be a GIS busbar or a GIL transmission line.

Specific embodiment 2 of the supporting insulator of the present invention:

The difference between it and the above-mentioned embodiment 1 mainly lies in that in the above-mentioned embodiment 1, the sleeve is provided with a second external thread for adjusting the position of the universal wheel. In this embodiment, the second external thread is not provided on the sleeve body. At this time, the mounting hole is a light hole, and a push-pull structure extending into the operating hand hole can be provided on the sleeve body. A plurality of threaded holes are provided on the wall of the mounting hole. Each threaded hole extends radially along the mounting hole and is arranged at intervals along the axial direction of the mounting hole. When it is necessary to adjust the position of the universal wheel, manually push and pull the universal wheel to a suitable position, and then connect the screw in the corresponding threaded hole so that the screw stops at the The inner end of the universal wheel is used to limit the inner end of the universal wheel, and the outer end of the universal wheel is limited by the bottom of the blind hole. At this time, the radial locking mechanism consists of the bottom of the blind hole, It consists of a threaded hole and a screw connected in the threaded hole.

Specific embodiment 3 of the supporting insulator of the present invention:

The main difference between it and the above-mentioned embodiment 1 is that: in the above-mentioned embodiment 1, the telescopic member is a universal wheel. In this embodiment, the telescopic member is only composed of a rod body that is telescopically assembled in the mounting hole. The rod body is provided with a first external thread and a second external thread from the outside to the inside. The first external thread is used to connect with the blind hole, and the second external thread The thread is used for threaded connection with the support body.

Specific embodiment 4 of the supporting insulator of the present invention:

The difference between it and the above-mentioned embodiment 1 mainly lies in that in the above-mentioned embodiment 1, balls are arranged between the support shoe and the ball, so as to reduce the frictional force between the ball and the support shoe. In this embodiment, no balls are provided between the supporting shoe and the ball, and at this time the surface of the supporting shoe used to cooperate with the ball should meet certain roughness requirements.

Specific embodiment 5 of the supporting insulator of the present invention:

The difference between it and the above-mentioned embodiment 1 mainly lies in that in the above-mentioned embodiment 1, a compression spring seat is provided in the casing, and the compression spring is press-fitted between the compression spring seat and the ball seat. In this embodiment, the compression spring is directly press-fitted between the bottom of the inner hole of the sleeve body and the ball seat, and the compression spring seat is no longer provided; it is also possible to directly fix the ball seat on the Inside the casing, the connection between the casing and the ball seat provides the ball seat with a pressure toward the outside of the casing. For example, the ball seat is threaded inside the casing. top pressure.

Specific embodiment 6 of the supporting insulator of the present invention:

The main difference between it and the above-mentioned embodiment 1 is that: in the above-mentioned embodiment 1, the insertion part is formed by the outer end of the casing. In this embodiment, the insertion part is formed by the part where the ball protrudes out of the casing.

Specific embodiment 7 of the supporting insulator of the present invention:

The difference between it and the above-mentioned embodiment 1 mainly lies in that: in the above-mentioned embodiment 1, both the ball seat and the gland are screwed into the sleeve body. In this embodiment, the ball seat is fixed in the casing by riveting or welding, and the gland is also fixed on the casing by riveting or welding. At this time, the positions of the ball seat and the gland cannot be adjusted.

Specific embodiment 8 of the supporting insulator of the present invention:

The main difference between it and the above-mentioned embodiment 1 is that the blind hole in the above-mentioned embodiment 1 is an internally threaded hole. In this embodiment, the blind hole is a light hole. At this time, the outer peripheral surface of the large-aperture section is a smooth surface suitable for the light hole, and there is no need to provide the first external thread.

As a specific embodiment of the gas-insulated busbar of the present invention, as shown in Fig. 12 to Fig. 17, the gas-insulated busbar includes a shell, and the shell is provided with a blind hole 106 extending radially along the shell. Specifically, the housing includes a cylinder body 9 , and fixing blocks 12 corresponding to the universal balls 100 are fixed on the outside of the cylinder body 9 , and blind holes 106 pass through the cylinder body and extend to the inside of the fixing block 12 . The housing in this embodiment is composed of two butt joints of cylinders 9, the two cylinders 9 are butted through a flange 91, and the fixing blocks 12 of the two cylinders 9 are provided with connecting holes, and the two cylinders 9 pass through Copper row 15 is conductively connected.

The housing is provided with a conductive rod and a supporting insulator supporting the conductive rod, and each cylinder 9 is respectively provided with a supporting insulator. The supporting insulator in this embodiment has the same structure as the supporting insulator described in the specific embodiment 1 of the supporting insulator above. ,No longer.

The support insulator is in a locked state on the housing, and the conductive rod hole 103 on the support insulator can radially position the conductive rod 11. At the same time, the spring contact finger presses the conductive rod 11 along the radial direction of the support insulator, so that the spring contact of the support insulator There is a frictional force between the finger and the conductive rod 11 along the axial direction of the conductive rod 11, and the frictional force is not less than the gravity of the corresponding conductive rod, so that the supporting insulator plays the role of limiting the axial direction of the conductive rod 11. Setting the support insulator inside the housing can meet the positioning requirements of the conductive rod 11, which improves the assembly efficiency of the gas-insulated busbar and reduces the assembly cost of the gas-insulated busbar. In addition, the end insulator fixed at the end of the conductive rod 11 for supporting the conductive rod 11 is also omitted, which reduces the usage of insulators and further saves the cost of the gas-insulated bus.

The above-mentioned gas insulated busbar may be a GIS busbar or a GIL transmission line.

In other embodiments, the support insulator can also be the support insulator in any one of the specific embodiments 2-8 of the above support insulator; the shell can only include a cylinder, and the opening of the blind hole is arranged inside the cylinder, and the blind The bottom of the hole is located on the cylinder wall of the cylinder; more than two support insulators can also be set in each cylinder, and spring contacts are arranged in the conductive rod holes of each support insulator. When the conductive rod is placed vertically, more than two The resultant force of the friction force between the spring contact fingers of the supporting junction and the conductive rod is greater than or equal to the gravity of the corresponding conductive rod, so that the radial direction and axial direction of the conductive rod can be realized through the mutual action of the supporting insulators fixed in the housing. orientation.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the description and accompanying drawings of the present invention, All should be included in the protection scope of the present invention in the same way.

Claims (10)

1. The support insulator is characterized by comprising a support body, wherein a conductive rod hole for inserting a conductive rod is formed in the support body; a finger groove for accommodating the elastic finger is formed in the conductive rod hole; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the combined force of the friction forces between the elastic contact finger of more than two supporting insulators matched with the conducting rod and the conducting rod is not smaller than the gravity of the corresponding conducting rod;

at least three mounting holes are formed in the support body at intervals along the circumferential direction of the support body, telescopic pieces capable of moving along the radial direction of the support body are respectively arranged in each mounting hole, and a radial locking mechanism is arranged between each telescopic piece and the support body; the telescopic piece is provided with an inserting part which is used for being inserted into the blind hole of the shell of the gas-insulated bus and is in supporting fit with the hole wall of the blind hole;

the support body is provided with an operation hand hole for adjusting the position of the telescopic piece.

2. The support insulator of claim 1, wherein the telescoping member is threadably attached to the support body, and the radial locking mechanism is formed or otherwise configured by threads on the telescoping member and the support body;

the inner end of the telescopic piece is provided with a telescopic piece adjusting structure which is used for being matched with a telescopic piece adjusting tool to screw the telescopic piece so that the outer end of the telescopic piece is screwed into or out of a mounting hole on a supporting body where the telescopic piece is located.

3. A support insulator according to claim 1 or 2, wherein the telescopic member comprises a sleeve;

a ball seat and a ball which is assembled on the ball seat in a rolling way are arranged in the sleeve body;

a gland is fixed at the orifice of the outer end of the sleeve body, a ball hole for the ball to extend out of the gland is arranged on the gland, and the diameter of the orifice of the outer end of the ball hole is smaller than that of the ball to prevent the ball from falling out of the sleeve body;

a supporting part which provides supporting force towards the outer end of the sleeve body for the ball seat is arranged in the sleeve body;

the insertion part is formed by a part of the ball extending out of the gland or by the outer end of the sleeve body.

4. A support insulator according to claim 3, wherein the ball seat is mounted in the sleeve body in an axially movable manner;

the gland is externally provided with external threads for being in threaded connection with the sleeve body; the gland is also provided with a gland adjusting structure which is used for being matched with a gland adjusting tool to screw the gland into or out of the sleeve body.

5. A support insulator according to claim 3, wherein the plug-in part is formed by the outer end of the sleeve body, and the plug-in part is provided with an external thread for threaded connection with the blind hole of the housing of the gas-insulated busbar.

6. The gas-insulated bus is characterized by comprising a shell, wherein a blind hole extending along the radial direction of the shell is formed in the shell, and an orifice of the blind hole is formed in the inner wall of the shell;

a conductive rod is arranged in the shell;

a supporting insulator for supporting the conducting rod is further arranged in the shell; the support insulator comprises a support body, wherein a conductive rod hole for inserting a conductive rod is formed in the support body; a contact finger groove is formed in the conducting rod hole, and an elastic contact finger is arranged in the contact finger groove; when the conducting rod is inserted into the conducting rod hole and vertically placed, the friction force between the elastic contact finger of one supporting insulator matched with the conducting rod and the conducting rod or the combined force of the friction forces between the elastic contact finger of more than two supporting insulators matched with the conducting rod and the conducting rod is not smaller than the gravity of the corresponding conducting rod;

at least three mounting holes are formed in the support body at intervals along the circumferential direction of the support body, telescopic pieces capable of moving along the radial direction of the support body are respectively arranged in each mounting hole, and a radial locking mechanism is arranged between each telescopic piece and the support body; the telescopic piece is provided with an inserting part which is used for being inserted into the blind hole and is in supporting fit with the hole wall of the blind hole;

the support body is provided with an operation hand hole for adjusting the position of the telescopic piece.

7. The gas insulated busbar of claim 6, wherein the telescoping member is threaded onto the support body, and the radial locking mechanism is comprised of threads on the telescoping member and the support body or otherwise configured;

the inner end of the telescopic piece is provided with a telescopic piece adjusting structure which is used for being matched with a telescopic piece adjusting tool to screw the telescopic piece so that the outer end of the telescopic piece is screwed into or out of a mounting hole on a supporting body where the telescopic piece is located.

8. The gas insulated bus of claim 6 or 7, wherein the telescoping member comprises a sleeve;

a ball seat and a ball which is assembled on the ball seat in a rolling way are arranged in the sleeve body;

a gland is fixed at the orifice of the outer end of the sleeve body, a ball hole for the ball to extend out of the gland is arranged on the gland, and the diameter of the orifice of the outer end of the ball hole is smaller than that of the ball to prevent the ball from falling out of the sleeve body;

a supporting part which provides supporting force towards the outer end of the sleeve body for the ball seat is arranged in the sleeve body;

the insertion part is formed by a part of the ball extending out of the gland or by the outer end of the sleeve body.

9. The gas insulated busbar of claim 8, wherein the ball seat is axially movably mounted in the sleeve body;

the gland is externally provided with external threads for being in threaded connection with the sleeve body; the gland is also provided with a gland adjusting structure which is used for being matched with a gland adjusting tool to screw the gland into or out of the sleeve body.

10. The gas insulated bus of claim 8, wherein the plug-in portion is formed by an outer end of a sleeve body, and the plug-in portion is threadedly connected with the blind hole.

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