CN212161680U - Solid-sealed polar pole with higher measurement precision of current sensor - Google Patents

Abstract

The utility model relates to a higher solid utmost point post that seals of current sensor measurement accuracy, including utmost point post barrel and locate vacuum interrupter, quiet end conducting rod in the utmost point post barrel, move end conducting rod, at least one current sensor, at least one contact tube, quiet end conducting rod the inner is connected with the quiet end of vacuum interrupter, moves end conducting rod the inner and moves the end through the flexible coupling component and vacuum interrupter and be connected, moves end conducting rod and quiet end conducting rod in at least one body of rod overcoat be equipped with current sensor. The conductive tube is arranged corresponding to the current sensor, penetrates through the current sensor, is sleeved outside the movable end conductive rod or the static end conductive rod body and is arranged between the current sensor and the movable end conductive rod or the static end conductive rod body, and is in conductive connection with the movable end conductive rod or the static end conductive rod body penetrating through the conductive tube body. The utility model discloses a set up the structure of current-conducting tube in current sensor, improved current sensor's measurement accuracy.

Description

Solid-sealed polar pole with higher measurement precision of current sensor

Technical Field

The utility model relates to a high-voltage electrical switchgear field, concretely relates to higher solid utmost point post that seals of current sensor measurement accuracy.

Background

The outdoor pole-mounted vacuum circuit breaker is an important switch element of a power grid overhead line, plays a role in protecting and controlling the power grid line, the solid-sealed pole is an important part of the outdoor vacuum circuit breaker, and conductive parts related to a vacuum arc extinguish chamber and a circuit breaker are integrally implanted into epoxy resin to form the solid-sealed pole, so that the insulating and switching functions are played. With the gradual maturity of the smart grid technology based on the primary and secondary fusion of the internet of things technology, the smart grid switch is required to have parameters such as voltage, current and power loss in a real-time online detection power grid system, transmit power grid operation data in real time, and the sensor with high reliability and precision is vital.

The inventor of the present application discloses in patent applications 201810023907.8 and 201810961796.5 that a current sensor integrally connected with a pole cylinder and sleeved on a movable end conducting rod or a static end conducting rod through a core is used for measuring the current value of the movable end conducting rod or the static end conducting rod, but with the progress of the society, the structure has the problem of insufficient measurement precision in use, and the structure is difficult to adapt to the development of the technology.

Disclosure of Invention

The utility model provides a higher solid utmost point post that seals of current sensor measurement accuracy to solve the current measurement of solid utmost point post to its inside conducting rod in measurement accuracy scheduling problem inadequately.

The utility model adopts the following technical scheme:

the utility model provides a higher solid utmost point post that seals of current sensor measurement accuracy, including utmost point post barrel, vacuum interrupter, quiet end conducting rod, move the end conducting rod, at least one current sensor and at least one contact tube, quiet end conducting rod the inner is connected with the quiet end of vacuum interrupter, move end conducting rod the inner and move the end through flexible coupling component and vacuum interrupter and be connected, move the body of rod overcoat of at least one in end conducting rod and the quiet end conducting rod and be equipped with current sensor, vacuum interrupter, current sensor and quiet end conducting rod and the body of rod of moving the end conducting rod all locate in the utmost point post barrel. The conductive tube is arranged corresponding to the current sensor, penetrates through the current sensor, is sleeved outside the movable end conductive rod or the static end conductive rod body and is arranged between the current sensor and the movable end conductive rod or the static end conductive rod body, and is in conductive connection with the movable end conductive rod or the static end conductive rod body penetrating through the conductive tube body.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

the utility model discloses a structure that the body of rod of at least one was established in current sensor, contact tube and moved end conducting rod and quiet end conducting rod overlaps in proper order, and the structure of the end conducting rod or quiet end conducting rod body conductive connection is moved to deuterogamy contact tube and running through its body optimizes the electric field distribution who is located the current sensor side in sealing the utmost point post admittedly, and then improves current sensor's measurement accuracy.

Further:

the current sensor and the conductive tube are respectively provided with one, the current sensor is sleeved outside the conductive tube, and the conductive tube is sleeved outside the movable end conductive rod body and is sequentially sleeved outside the movable end conductive rod body.

The pole cylinder is of a cylindrical structure with an open cavity arranged therein, and the vacuum arc-extinguishing chamber, the current sensor, the conductive tube, the movable end conductive rod and the static end conductive rod body are arranged in the side wall of the pole cylinder and are integrally connected. The movable end of the vacuum arc extinguish chamber extends into the open cavity, and the opening of the open cavity is arranged in front of the movable end of the vacuum arc extinguish chamber in the moving direction. The inner end of the movable end conducting rod extends into the open cavity.

The pole cylinder is formed by solid sealing and pressure injection molding through an automatic pressure gel forming process of epoxy resin insulating materials. The current sensor is arranged in an annular structure. The current sensor is additionally provided with a supporting lead, one end of the supporting lead is connected with the current sensor, the other end of the supporting lead extends to the outer edge of the pole cylinder body where the opening of the open cavity is located, and the supporting lead is used for transmitting a signal measured by the current sensor when the current sensor works and supporting the current sensor in the forming process of the pole cylinder body. The conductive tube is arranged in the middle of the annular structure of the current sensor by penetrating through the current sensor.

Further:

the current conducting tube and the current sensor sleeved outside the circumferential side edge of the current conducting tube are connected with each other in a coated mode through the side wall of the pole column cylinder body when the pole column cylinder body is molded in an injection mode, and the current conducting tube is provided with the following two modes:

first, above-mentioned contact tube both ends communicate above-mentioned uncovered cavity and above-mentioned utmost point post barrel other ground end to end respectively and link up the setting. The inner end of the movable end conducting rod extends into the open cavity through the inner opening of the conducting tube, and the end part of the inner end of the movable end conducting rod in the open cavity is in locking connection with the flexible connecting component through a locking bolt. The outer end of the movable end conducting rod extends out of the pole column barrel through the outer end opening of the conducting tube. And a sealing nut is additionally arranged at the outer end of the movable end conducting rod positioned outside the pole column barrel body and is in threaded connection with the outer end of the movable end conducting rod. Namely, the inner end of the movable end conducting rod is fixed by the locking bolt, and the outer end of the movable end conducting rod is pressed against the outer edge of the pole cylinder by the sealing nut, so that the movable end conducting rod and the pole cylinder are relatively fixed.

The outer end of the conductive tube is of a horn-shaped structure with the tube diameter gradually increasing towards the end face of the outer end. The movable end conducting rod is also additionally provided with a conductive sealing sleeve and a sealing gasket, the conductive sealing sleeve and the sealing gasket are both sleeved outside the movable end conducting rod, the conductive sealing sleeve is arranged in a horn-shaped structure at the outer end of the conductive pipe, the sealing gasket is arranged between the sealing nut and the outer edge of the side wall of the pole cylinder, and the sealing gasket is pushed by the sealing nut to be abutted against the conductive sealing sleeve and the outer edge of the side wall of the pole cylinder. The outer edge of the conductive sealing sleeve is in a round platform-shaped structure matched with the horn-shaped structure at the outer end of the conductive tube.

The movable end conducting rod is provided with an assembling hole, and the assembling hole is of a blind hole structure arranged on the circumferential side edge of the rod body of the movable end conducting rod. The connecting piece and the elastic piece are arranged in the assembly hole, the connecting piece and the elastic piece are both made of conductive materials, the inner end of the elastic piece is fixedly arranged in the assembly hole, the connecting piece is fixedly arranged at the outer end of the elastic piece, and the connecting piece is driven by the elastic piece to be adjacent to the inner wall of the conductive tube.

As can be seen from the above description of the structure of the further aspects of the present invention, compared with the prior art, the present invention has the following advantages:

in the further scheme of the present invention, the conductive pipes are connected end to end and the movable conductive rods are inserted into the conductive pipes, and the movable conductive rods are assembled with the sealing nuts through the locking bolts, so that the structure assembly structure is more flexible, and the application flexibility of the solid-sealed polar columns is improved on the premise of improving the detection precision of the current sensor, specifically, the solid-sealed polar columns with the structure have different requirements for connecting the leading-out terminals of the solid-sealed polar columns by combining the movable conductive rods with different outer end structures (connecting jacks, connecting columns, etc.), thereby realizing the modular production of the product; and in combination utmost point post, the equipment mode of combination utmost point post also can be optimized to this structure, and then promotes the utility model discloses a gu seal the suitability of utmost point post, improve product market competition.

And move the mode that end conducting rod passes through the elastic component cooperation connecting piece and realize being connected with the electrically conductive pipe electrically conductively, at first move the above-mentioned structure of end conducting rod, simple structure and be convenient for produce, secondly, this structure will move the process of end conducting rod inserting the conducting pipe also simple and convenient easy operation, and then the double-barrelled manufacturing cost who has reduced the product together.

Secondly, at least one of the two ends of the conductive tube does not extend to penetrate through the side wall of the pole cylinder, namely the structure comprises the following three conditions:

the utility model provides a current sensor, the setting of the open cavity of terminal post barrel lateral wall is not run through to the contact tube inner, and the contact tube inner extends to and runs through terminal post barrel lateral wall and the outer end does not run through terminal post barrel lateral wall setting, and the terminal surface intercommunication above-mentioned uncovered cavity setting in the contact tube inner promptly moves the end conducting rod body towards moving along the aforesaid in the contact tube outer end and moves between the end conducting rod outer end position extends to above-mentioned current sensor and moves. The pole barrel side wall is wrapped and fixes the circumferential outer edge of the conducting tube, the outer end face of the conducting tube and the circumferential outer edge of the movable end conducting rod body between the outer ends of the movable end conducting rods, namely, under the condition, the pole barrel side wall wraps the conducting tube when the pole barrel is molded through pressure injection and the movable end conducting rod is close to the part of the pole body at the outer end of the movable end conducting rod, so that the movable end conducting rod and the pole barrel are fixed relatively.

And secondly, the outer end of the conductive tube extends to penetrate through the side wall of the pole cylinder body, and the inner end of the conductive tube does not penetrate through the side wall of the pole cylinder body. And thirdly, the inner end and the outer end of the conductive pipe are not arranged through the side wall of the pole cylinder. The two conditions are different from the first structure only in that the side wall of the pole cylinder is different from the part which is connected with the movable end conducting rod body in a cladding mode when the pole cylinder is molded in a pressing and injection mode.

As can be seen from the above description of the structure of the further aspects of the present invention, compared with the prior art, the present invention has the following advantages:

above-mentioned the utility model discloses in the further scheme, link up through the at least one end of contact tube, make the lateral wall of utmost point post barrel press and annotate the shaping in-process with the partial body of rod cladding that moves the end conducting rod promptly and be connected, the assembling process that is about to move the end conducting rod is also integrated in the press and annotate the shaping in-process of the utmost point post barrel of solid sealed utmost point post, ensured above-mentioned promotion current sensor detects under the prerequisite of precision, the influence to product production, cost such as equipment that brings is promoted by this current sensor detection precision in the reduction of at utmost.

Drawings

Fig. 1 is a schematic structural view of an embedded pole according to the first embodiment of the present invention.

Fig. 2 is an enlarged schematic structural view of a part a in fig. 1.

Fig. 3 is a schematic structural view of the embedded pole according to the second embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The first embodiment is as follows:

referring to fig. 1, an embedded pole with a higher measurement accuracy of a current sensor 5 comprises a pole barrel 1, a vacuum arc extinguish chamber 2, a static end conducting rod 3, a dynamic end conducting rod 4, at least one current sensor 5 and at least one conducting tube 6, wherein the inner end of the static end conducting rod 3 is connected with the static end of the vacuum arc extinguish chamber 2, the inner end of the dynamic end conducting rod 4 is connected with the dynamic end of the vacuum arc extinguish chamber 2 through a flexible connecting member 41, the outer rod body of at least one of the dynamic end conducting rod 4 and the static end conducting rod 3 is sleeved with the current sensor 5, and the outer ends of the dynamic end conducting rod 4 and the static end conducting rod 3 are respectively an outgoing line end and an incoming line end of the embedded pole. The technical personnel in the field of the structure that the current sensor 5 is sleeved outside the rod body of at least one of the movable end conducting rod 4 and the static end conducting rod 3 can select the part needing to measure the current according to the needs, and as related in the background art, the inventor submits the scheme of respectively measuring the movable end conducting rod 4 and the static end conducting rod 3, and certainly, the movable end conducting rod 4 and the static end conducting rod 3 can be measured simultaneously. Likewise, after the technical personnel in the field know this scheme, also can be the adaptability in order to promote current sensor 5 measurement accuracy with the utility model discloses the structure is applied to in the common solid utmost point post that seals. In fig. 1, only the pole cylinder 1, a part of the silica gel housing 11, the conductive tube 6, the movable end conductive rod 4 and the attached structures thereof are shown in a cross-sectional view.

With continued reference to fig. 1, the pole cylinder 1 is a pole cylinder 1 formed by an epoxy resin insulation material Automatic Pressure Gelation (APG) molding process through solid encapsulation and pressure injection molding. The pole column body 1 is externally coated with a silica gel shell 11. The pole cylinder 1 is a cylindrical structure with an open cavity 12 arranged therein. Above-mentioned vacuum interrupter 2, above-mentioned current sensor 5, above-mentioned contact tube 6 and the aforesaid move and hold the contact rod 4 and the 3 body of rod of the quiet end contact rod of the aforesaid all locate 1 lateral walls of utmost point post barrel and ground body coupling setting, above-mentioned part is all poured and is implanted through epoxy APG technology promptly and seal at 1 lateral walls of utmost point post barrel admittedly to form a whole with this utmost point post barrel 1, promote and seal utmost point post wholly insulating and sealing performance admittedly. The conductive tube 6 is arranged corresponding to the current sensor 5, the conductive tube 6 penetrates through the current sensor 5 and is sleeved outside the movable end conductive rod 4 or the static end conductive rod 3, and is arranged between the current sensor 5 and the movable end conductive rod 4 or the static end conductive rod 3, and the conductive tube 6 is in conductive connection with the movable end conductive rod 4 or the static end conductive rod 3 penetrating through the tube body. Specifically, in the present embodiment, the current sensor 5 and the conductive tube 6 are respectively provided with one, the current sensor 5 is sleeved outside the conductive tube 6, and the conductive tube 6 is sleeved outside the movable end conductive rod 4 and is sequentially sleeved outside the rod body.

With continued reference to fig. 1, the moving end of the vacuum interrupter 2 extends into the open cavity 12, and the opening of the open cavity 12 is located in front of the moving direction of the moving end of the vacuum interrupter 2. The inner end of the movable end conducting rod 4 extends into the open cavity 12. The movable end of the vacuum interrupter 2 is movably arranged by an insulated driving rod 21 entering the open cavity 12 from the opening of the open cavity 12. The movable end of the vacuum arc extinguish chamber 2 is connected with the inner end of the movable end conducting rod 4 in the open cavity 12 through the flexible connecting component 41. One end of the flexible connecting member 41 is locked at the joint of the insulating driving rod 21 and the movable end of the vacuum interrupter 2, and the other end is locked at the inner end of the movable end conducting rod 4 through a locking bolt 411. The flexible connecting member 41 may be a conductive deformable metal sheet structure, such as a silver-plated copper bar flexible connecting member 41. The current sensor 5 is provided in an annular structure. The current sensor 5 is additionally provided with a supporting lead 51, one end of the supporting lead 51 is connected with the current sensor 5, and the other end of the supporting lead 51 extends to the outer edge of the pole cylinder 1 where the opening of the open cavity 12 is located, and the supporting lead 51 is used for transmitting signals measured by the current sensor 5 when the current sensor 5 works and for supporting the current sensor 5 in the forming process of the pole cylinder 1. The conductive tube 6 is arranged from the middle of the annular structure of the current sensor 5 by penetrating through the current sensor 5.

Referring to fig. 1 and 2, two ends of the conductive tube 6 are respectively communicated with the open cavity 12 and the pole cylinder 1, and the two ends are arranged in a head-to-tail penetrating manner. The inner end and the outer end of the conductive tube 6 are both horn-shaped structures with the tube diameters gradually increasing towards the respective end surfaces. The inner end of the movable end conducting rod 4 extends into the open cavity 12 through the inner end opening of the conducting tube 6. The outer end of the movable end conducting rod 4 extends to the outside of the pole cylinder 1 through the outer end opening of the conducting tube 6. Lie in the outer end conducting rod 4 outer end that moves of utmost point post barrel 1 and attach and be equipped with a gland nut 42, a conductive seal cover 43 and a seal gasket 44, gland nut 42 and the 4 outer end threaded connection of end conducting rod that moves, conductive seal cover 43 all overlaps with seal gasket 44 and locates outside the end conducting rod 4 that moves, conductive seal cover 43 is located in the horn-shaped structure of this conducting tube 6 outer end, conductive seal cover 43 outer edge is the round platform column structure setting that matches with the horn-shaped structure of conducting tube 6 outer end, seal gasket 44 is located between gland nut 42 and the outer edge of utmost point post barrel 1 lateral wall, seal gasket 44 is promoted ground and conductive seal cover 43 by gland nut 42, utmost point post barrel 1 lateral wall is outer along the butt setting. Namely, the inner end of the movable end conducting rod 4 is fixed by the locking bolt 411, and the outer end of the movable end conducting rod 4 is pressed against the outer edge of the pole cylinder 1 by the sealing nut 42, so that the movable end conducting rod 4 and the pole cylinder 1 are relatively fixed. The movable end conductive rod 4 can be assembled by inserting the inner end of the movable end conductive rod 4 into the conductive tube 6 integrally molded with the pole cylinder 1 until the outer end of the conductive tube 6 penetrates out of the inner end of the conductive tube, and then installing the above components and locking the locking bolt 411 and the sealing nut 42.

With continued reference to fig. 1 and 2, the moving end conducting rod 4 is provided with an assembling hole 45, and the assembling hole 45 is a blind hole structure formed on the circumferential side of the rod body of the moving end conducting rod 4. The assembly hole 45 is internally provided with a connecting piece 451 and an elastic piece 452, the connecting piece 451 and the elastic piece 452 are made of conductive materials, the inner end of the elastic piece 452 is fixedly arranged in the assembly hole 45, the connecting piece 451 is fixedly arranged at the outer end of the elastic piece 452, and the connecting piece 451 is driven by the elastic piece 452 to be adjacent to the inner wall of the conductive tube 6. The connecting piece 451 is of a metal spherical structure which is not conductive, the elastic piece 452 is a conductive compression spring, the inner end of the elastic piece 452 can be fixedly connected with the wall of the assembly hole 45, the elastic piece can also be directly placed adjacent to the wall of the assembly hole 45, the connecting piece 451 can be fixedly connected with the outer end of the elastic piece 452 on the same principle, the connecting piece 451 can also be pressed into the assembly hole 45 through the compression spring structure which drives the elastic piece 452 to deform through the connecting piece 451, then the movable end conducting rod 4 is inserted into the conducting tube 6, and the connecting piece 451 and the elastic piece 452 cannot be separated from the assembly hole 45 under the limitation of the inner wall of the conducting tube 6. This electrically conductive seal cover 43 can realize playing waterproof dustproof effect to moving the sealed between end conducting rod 4 and the contact tube 6 to can realize moving the electrically conductive connection between end conducting rod 4 and the contact tube 6, play supplementary and promotion effect to the two effect of being connected through the electrically conductive connection that above-mentioned elastic component 452, connecting piece 451 realized.

Example two:

referring to fig. 3, the solid-sealed pole with the current sensor 5 having higher measurement accuracy comprises a pole barrel 1, a vacuum arc extinguish chamber 2, a static end conducting rod 3, a movable end conducting rod 4, a current sensor 5 and a conducting tube 6, wherein the inner end of the static end conducting rod 3 is connected with the static end of the vacuum arc extinguish chamber 2, the inner end of the movable end conducting rod 4 is connected with the movable end of the vacuum arc extinguish chamber 2 through a flexible connecting member 41, and the current sensor 5 is sleeved outside the rod body of the movable end conducting rod 4. The pole cylinder 1 is formed by solid sealing and pressure injection molding through an Automatic Pressure Gelation (APG) molding process of an epoxy resin insulating material. The pole column body 1 is externally coated with a silica gel shell 11. The pole cylinder 1 is a cylindrical structure with an open cavity 12 arranged therein. Above-mentioned vacuum interrupter 2, above-mentioned current sensor 5, above-mentioned contact tube 6 and the aforesaid move and hold the contact rod 4 and the 3 body of rod of the quiet end contact rod of the aforesaid all locate 1 lateral walls of utmost point post barrel and ground body coupling setting, above-mentioned part is all poured and is implanted through epoxy APG technology promptly and seal at 1 lateral walls of utmost point post barrel admittedly to form a whole with this utmost point post barrel 1, promote and seal utmost point post wholly insulating and sealing performance admittedly. The conductive tube 6 is arranged corresponding to the current sensor 5, the conductive tube 6 penetrates through the current sensor 5 and is sleeved outside the movable end conductive rod 4 and is arranged between the current sensor 5 and the movable end conductive rod 4 or between the static end conductive rod 3 and the movable end conductive rod 4, and the conductive tube 6 is in conductive connection with the movable end conductive rod 4. In fig. 3, only the pole cylinder 1, a part of the silica gel housing 11, the conductive tube 6 and the movable end conductive rod 4 are schematically shown in a cross-sectional view.

With continued reference to fig. 3, the moving end of the vacuum interrupter 2 extends into the open cavity 12, and the opening of the open cavity 12 is located in front of the moving direction of the moving end of the vacuum interrupter 2. The inner end of the movable end conducting rod 4 extends into the open cavity 12. The movable end of the vacuum interrupter 2 is movably arranged by an insulated driving rod 21 entering the open cavity 12 from the opening of the open cavity 12. The movable end of the vacuum arc extinguish chamber 2 is connected with the inner end of the movable end conducting rod 4 in the open cavity 12 through the flexible connecting component 41. One end of the flexible connecting member 41 is locked at the joint of the insulating driving rod 21 and the movable end of the vacuum interrupter 2, and the other end is locked at the inner end of the movable end conducting rod 4 through a locking bolt 411. The flexible connecting member 41 may be a conductive deformable metal sheet structure, such as a silver-plated copper bar flexible connecting member 41. The current sensor 5 is provided in an annular structure. The current sensor 5 is additionally provided with a supporting lead 51, one end of the supporting lead 51 is connected with the current sensor 5, and the other end of the supporting lead 51 extends to the outer edge of the pole cylinder 1 where the opening of the open cavity 12 is located, and the supporting lead 51 is used for transmitting signals measured by the current sensor 5 when the current sensor 5 works and for supporting the current sensor 5 in the forming process of the pole cylinder 1. The conductive tube 6 is arranged from the middle of the annular structure of the current sensor 5 by penetrating through the current sensor 5.

With continued reference to fig. 3, at least one of the inner and outer ends of the conductive tube 6 does not extend through the sidewall of the post cylinder 1. Namely, the structure includes the following three cases: firstly, the inner end of the conductive tube 6 extends to the side wall of the penetrating pole cylinder 1, and the outer end of the conductive tube does not penetrate the side wall of the pole cylinder 1. Secondly, the outer end of the conductive tube 6 extends to the side wall of the penetrating pole cylinder 1, and the inner end of the conductive tube is not arranged through the side wall of the pole cylinder 1. Thirdly, the inner end and the outer end of the conductive tube 6 are not arranged to penetrate through the side wall of the pole cylinder 1. The structure is that the fixing of the movable end conducting rod 4 and the insulating sealing of the circumferential side edge are realized by coating and fixing the local rod body of the movable end conducting rod 4 through the side wall of the pole cylinder body 1. The structure of the three cases only needs to be adaptively changed, so the embodiment adopts the structure of one of the above cases for detailed description, specifically:

the inner end of the conductive tube 6 extends to penetrate through the side wall of the pole barrel body 1, and the outer end of the conductive tube does not penetrate through the side wall of the pole barrel body 1, namely, the end face of the inner end of the conductive tube 6 is communicated with the open cavity 12, and the outer end of the conductive tube 6 extends to the position between the current sensor 5 and the outer end of the movable end conductive rod 4 along the position of the movable end conductive rod 4 facing the outer end of the movable end conductive rod 4. Above-mentioned 1 lateral wall cladding of utmost point post barrel is fixed the 6 circumference outer edges of conducting tube, the conducting tube 6 outer end terminal surface with move the 4 body of rod circumference outer edges settings of end conducting rod between the end conducting rod 4 outer ends, under this kind of circumstances promptly, 1 lateral wall cladding conducting tube 6 and move the partial body of rod that end conducting rod 4 outer end was close to and move end conducting rod 4 when 1 injection moulding of utmost point post barrel to the realization is moved end conducting rod 4 and utmost point post barrel 1's relatively fixed.

With reference to fig. 3, the structure of the conductive connection between the movable end conductive rod 4 and the conductive tube 6 may be configured according to the structure in the first embodiment, or the movable end conductive rod 4 and the inner wall of the conductive tube 6 may be connected through an integrated connection, a clamping connection, a threaded connection, or the like, before the post barrel 1 is molded by pressure injection, the conductive tube 6 and the movable end conductive rod 4 are connected, that is, only one component needs to be positioned for positioning the two components in the pressure injection process. Specifically, the outer end of the conductive tube 6 extends to the position between the current sensor 5 and the outer end of the movable end conductive rod 4 along the position of the movable end conductive rod 4 facing the outer end of the movable end conductive rod 4, and the end part of the outer end of the conductive tube 6 is integrally connected with the circumferential side edge of the movable end conductive rod 4.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (9)

1. An embedded pole with higher measurement accuracy of a current sensor comprises a pole barrel, a vacuum arc extinguish chamber, a static end conducting rod, a movable end conducting rod and at least one current sensor, wherein the inner end of the static end conducting rod is connected with the static end of the vacuum arc extinguish chamber; the method is characterized in that: the current sensor is arranged in the static end conducting rod body, the static end conducting rod body is arranged outside the static end conducting rod body between the current sensor and the static end conducting rod body, and the conducting tube is connected with the static end conducting rod body or the dynamic end conducting rod body which penetrates through the static end conducting rod body in a conducting mode.

2. The embedded pole with the higher measurement accuracy of the current sensor according to claim 1, characterized in that: the current sensor and the conductive tube are respectively provided with one, the current sensor is sleeved outside the conductive tube, and the conductive tube is sleeved outside the movable end conductive rod body and is sequentially sleeved outside the movable end conductive rod body.

3. The embedded pole with the higher measurement accuracy of the current sensor according to claim 2, characterized in that: the pole cylinder is of a cylindrical structure with an open cavity arranged inside, and the vacuum arc extinguish chamber, the current sensor, the conductive tube, the movable end conductive rod and the static end conductive rod are integrally connected with one another by arranging the movable end conductive rod and the static end conductive rod in the side wall of the pole cylinder; the movable end of the vacuum arc extinguish chamber extends into the open cavity, and the opening of the open cavity is arranged in the moving direction of the movable end of the vacuum arc extinguish chamber; the inner end of the movable end conducting rod extends into the open cavity.

4. The embedded pole of claim 3 with higher measurement accuracy of the current sensor is characterized in that: two ends of the conductive tube are respectively communicated with the open cavity and the pole cylinder body to be communicated end to end; the inner end of the movable end conducting rod extends into the open cavity through the inner end opening of the conducting tube, and the end part of the inner end of the movable end conducting rod in the open cavity is in locking connection with the flexible connecting component through a locking bolt; the outer end of the movable end conducting rod extends out of the pole column barrel through the outer end opening of the conducting tube; and a sealing nut is additionally arranged at the outer end of the movable end conducting rod positioned outside the pole column barrel body and is in threaded connection with the outer end of the movable end conducting rod.

5. The embedded pole with the higher measurement accuracy of the current sensor according to claim 4, characterized in that: the outer end of the conductive tube is of a horn-shaped structure with the tube diameter gradually increasing towards the end face of the outer end; the movable end conducting rod is also additionally provided with a conductive sealing sleeve and a sealing gasket, the conductive sealing sleeve and the sealing gasket are both sleeved outside the movable end conducting rod, the conductive sealing sleeve is arranged in a horn-shaped structure at the outer end of the conducting tube, the sealing gasket is arranged between the sealing nut and the outer edge of the side wall of the pole cylinder body, and the sealing gasket is arranged in a butting way with the conductive sealing sleeve and the outer edge of the side wall of the pole cylinder body in a pushing way by the sealing nut; the outer edge of the conductive sealing sleeve is in a round platform-shaped structure matched with the horn-shaped structure at the outer end of the conductive tube.

6. The embedded pole with the higher measurement accuracy of the current sensor according to claim 4, characterized in that: the movable end conducting rod is provided with an assembling hole which is of an inner blind hole structure arranged on the circumferential side edge of the rod body of the movable end conducting rod; the connecting piece and the elastic piece are arranged in the assembly hole and are made of conductive materials, the inner end of the elastic piece is fixedly arranged in the assembly hole, the connecting piece is fixedly arranged at the outer end of the elastic piece, and the connecting piece is driven by the elastic piece to be adjacent to the inner wall of the conductive tube.

7. The embedded pole of claim 3 with higher measurement accuracy of the current sensor is characterized in that: the end surface of the inner end of the conductive tube is communicated with the open cavity, and the outer end of the conductive tube extends to a position between the current sensor and the outer end of the movable end conductive rod along the position of the rod body of the movable end conductive rod facing the outer end of the movable end conductive rod; the pole barrel side wall is coated and fixed on the circumferential outer edge of the conductive tube, and the circumferential outer edge of the movable end conductive rod body between the end face of the outer end of the conductive tube and the outer end of the movable end conductive rod is arranged.

8. The embedded pole of claim 3 with higher measurement accuracy of the current sensor is characterized in that: the current sensor is arranged in an annular structure; the current sensor is additionally provided with a supporting lead, one end of the supporting lead is connected with the current sensor, the other end of the supporting lead extends to the outer edge of the pole cylinder body where the opening of the open cavity is located, and the supporting lead is used for transmitting a signal measured by the current sensor when the current sensor works and supporting the current sensor in the pole cylinder body forming process; the conductive tube is arranged by penetrating through the current sensor from the middle part of the annular structure of the current sensor.

9. The embedded pole with the higher measurement accuracy of the current sensor according to claim 1, characterized in that: the pole cylinder is formed by solid sealing and pressure injection molding through an automatic pressure gel forming process of epoxy resin insulating materials.

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