Open type insulating cylinder

Abstract

The utility model discloses an open-type insulating cylinder, relates to the technical field of electrical equipment, and aims to provide an open-type insulating cylinder which is fast in installation, less in cylinder structure, and less in heating and resistance, the technical key points are that the open-type insulating cylinder comprises an insulating cylinder, the lower part of the insulating cylinder is provided with an installation hole, the insulating cylinder is provided with an upper disc, and the upper disc is provided with a lower disc. The upper disc and the insulating cylinder are integrally formed, the side surface of the insulating cylinder is provided with an upper wire outlet end and a lower wire outlet end, and a vacuum arc extinguish chamber is arranged between the upper wire outlet end and the lower wire outlet end. According to the utility model, the inner disc is connected with the insulating cylinder, and then the bolt is connected with the upper wire outlet end and the vacuum arc-extinguishing chamber, so that the installation work of the upper end aluminum support is directly saved, in addition, the inner disc is clamped with the insulating cylinder, the installation of the lower end aluminum support is avoided, and the labor intensity of the installation and assembly work is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an open insulating cylinder. Background Art

[0002] The insulating cylinder is a vacuum circuit breaker used in high-voltage lines. It has the advantages of high stability and convenient installation. At present, the insulating cylinders of most mainstream insulating cylinder vacuum circuit breakers adopt a hollow design and are equipped with a cover on the top. This design requires the addition of upper and lower aluminum brackets when installing the vacuum arc chamber. On the one hand, it makes the installation work cumbersome. On the other hand, it leads to more structures inside the cylinder, resulting in higher heat generation during use, which is easy to affect the normal operation of the equipment and reduce its service life. In addition, due to the large number of internal components, the increase in bolted connections will increase the loop resistance and affect the circuit breaker parameters. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides an open insulating cylinder which is quick to install, has fewer structures inside the cylinder, and has lower heat generation and resistance.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an open insulating cylinder, comprising an insulating cylinder, a mounting hole is opened at the bottom of the insulating cylinder, an upper plate is provided on the insulating cylinder, the upper plate and the insulating cylinder are integrally formed, an upper wire outlet end and a lower wire outlet end are provided on the side of the insulating cylinder, a vacuum arc extinguishing chamber is provided between the upper wire outlet end and the lower wire outlet end, and a bolt connected with the upper wire outlet end and the vacuum arc extinguishing chamber is provided in the upper plate, a lower end pull rod is provided under the vacuum arc extinguishing chamber, an inner plate is provided under the insulating cylinder and is sleeved on the side of the lower end pull rod, the inner plate is connected to the insulating cylinder through a clamping mechanism close to the lower wire outlet end, and a heat sink is provided on the side of the insulating cylinder close to the lower wire outlet end.

[0007] Preferably, a conductive block is additionally provided between the vacuum arc extinguishing chamber and the upper outlet terminal, and the conductive block is used to fill the gap between the vacuum arc extinguishing chamber and the upper outlet terminal, and the conductive block can be replaced with a suitable size according to the gap.

[0008] Preferably, the clamping mechanism includes a limit card and a spring, the limit card is slidably connected in the insulating cylinder, and the insulating cylinder is provided with a slide groove allowing the limit card to be accommodated, the spring is connected between the slide groove and the limit card, and applies an outward thrust to the limit card, and the lower side of the limit card is set as a slope.

[0009] Preferably, a sealing cover is provided on the upper plate, the sealing cover is clamped with the upper plate, and the sealing cover is used to cover and protect the bolts located in the upper plate.

[0010] Preferably, a sealing ring is provided in the insulating cylinder at a position corresponding to the inner disk, the sealing ring is in contact with the upper end surface of the inner disk, and the sealing ring and the inner disk have an interference fit.

[0011] Preferably, a telescopic sleeve is provided under the inner plate, the upper end of the telescopic sleeve is connected to the inner plate, the lower end of the telescopic sleeve is connected to the lower end pull rod, and the telescopic sleeve is hollow.

[0012] Preferably, a humidity test paper is provided on the side of the insulating cylinder, one end of the humidity test paper is located inside the insulating cylinder, and the other end is located outside the insulating cylinder, and the end of the humidity test paper located outside is plastic-sealed.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an open insulating cylinder, which has the following beneficial effects:

[0015] 1. By setting the upper plate and the inner plate, the upper plate is formed in an integrated manner with the insulating cylinder, and then connected with the upper outlet terminal and the vacuum arc extinguishing chamber by bolts, so that the installation work of the upper aluminum bracket is directly saved. In addition, the clamping connection between the inner plate and the insulating cylinder eliminates the installation of the lower aluminum bracket, which greatly reduces the labor intensity of installation and assembly work, reduces the space occupied by the upper and lower aluminum brackets in the insulating cylinder, simplifies the structure in the insulating cylinder, reduces the heat and resistance of the components, and improves the service life and parameter accuracy of the device.

[0016] 2. By setting a conductive block, the conductive block can be connected between the vacuum arc chamber and the upper outlet terminal to ensure the connectivity of the circuits of the two. At the same time, the conductive block can be replaced with a suitable size according to the distance between the vacuum arc chamber and the upper outlet terminal. By replacing the conductive block, the insulating tube can adapt to vacuum arc chambers of various sizes, thereby improving the versatility of the insulating tube and greatly increasing the convenience of manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of the insulating cylinder of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross section of the insulating cylinder of the utility model;

[0020] Figure 4 For this utility model Figure 3 A is an enlarged schematic diagram.

[0021] In the figure: 1. Insulating cylinder; 2. Upper plate; 3. Upper outlet terminal; 4. Lower outlet terminal; 5. Sealing cover; 6. Heat sink; 7. Mounting hole; 8. Humidity test paper; 9. Vacuum arc extinguishing chamber; 10. Bolt; 11. Conductive block; 12. Lower end pull rod; 13. Inner plate; 14. Sealing ring; 15. Limit card; 16. Spring; 17. Telescopic sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , an open insulating cylinder, comprising an insulating cylinder 1, a mounting hole 7 is opened at the bottom of the insulating cylinder 1, an upper plate 2 is arranged on the insulating cylinder 1, the upper plate 2 and the insulating cylinder 1 are integrally formed, an upper outlet terminal 3 and a lower outlet terminal 4 are arranged on the side of the insulating cylinder 1, a vacuum arc extinguishing chamber 9 is arranged between the upper outlet terminal 3 and the lower outlet terminal 4, and a bolt 10 connected with the upper outlet terminal 3 and the vacuum arc extinguishing chamber 9 is arranged in the upper plate 2, a lower end pull rod 12 is arranged under the vacuum arc extinguishing chamber 9, an inner plate 13 sleeved on the side of the lower end pull rod 12 is arranged under the insulating cylinder 1, the inner plate 13 is connected to the insulating cylinder 1 through a clamping mechanism close to the lower outlet terminal 4, and a heat sink 6 is arranged on the side of the insulating cylinder 1 close to the lower outlet terminal 4;

[0024] By setting the upper plate 2 and the inner plate 13, the vacuum arc chamber 9 is firmly fixed by the one-piece die-cast upper plate 2 and the clamped inner plate 13, and the upper and lower aluminum brackets are taken away, which greatly saves costs and simplifies the assembly process. In addition, with the reduction of metal parts and bolts 10 connections in the barrel, the heat dissipation condensation problem is greatly improved, the loop resistance is greatly reduced, the stability and service life of the device are guaranteed, and the accuracy of circuit parameter control is improved. In addition, it needs to be further explained that the one-piece insulating cylinder 1 with the upper plate 2 is connected by epoxy resin casting, which greatly improves the insulation performance while ensuring the fixing strength.

[0025] A conductive block 11 is provided between the vacuum interrupter 9 and the upper outlet terminal 3. The conductive block 11 is used to fill the gap between the vacuum interrupter 9 and the upper outlet terminal 3, and the conductive block 11 can be replaced with a suitable size according to the gap.

[0026] By setting the conductive block 11, the upper outlet terminal 3 and the vacuum arc chamber 9 can be connected by the conductive block 11, and by adjusting the size of the conductive block 11, it can be adapted to vacuum arc chambers 9 of various sizes and heights, which greatly improves the convenience of manufacturers and increases the versatility of the insulating tube 1.

[0027] The clamping mechanism includes a limit card 15 and a spring 16. The limit card 15 is slidably connected in the insulating tube 1, and a slide groove is provided in the insulating tube 1 to allow the limit card 15 to be received. The spring 16 is connected between the slide groove and the limit card 15 and applies an outward thrust to the limit card 15. The lower side of the limit card 15 is arranged as an inclined surface.

[0028] By setting the limit card 15 and the spring 16, when the inner plate 13 is installed, the inner plate 13 first uses the inclined surface to squeeze the limit card 15 so that the limit card 15 is retracted into the slide groove. After the inner plate 13 is installed in place, the limit card 15 pops out under the push of the spring 16 and is clamped on the lower end of the inner plate 13, thereby achieving the purpose of clamping the inner plate 13 and improving the convenience of installing the inner plate 13.

[0029] The upper plate 2 is provided with a sealing cover 5, which is clamped with the upper plate 2 and is used to cover and protect the bolts 10 located in the upper plate 2;

[0030] By setting the sealing cover 5, the sealing cover 5 can be tightly clamped on the upper plate 2 and cover the bolts 10 located in the upper plate 2, so as to avoid the bolts 10 being exposed to the air for a long time, prevent the bolts 10 from being corroded by air and water vapor, and ensure the service life of the bolts 10.

[0031] A sealing ring 14 is provided in the insulating cylinder 1 at a position corresponding to the inner disk 13, and the sealing ring 14 is in contact with the upper end surface of the inner disk 13, and the sealing ring 14 and the inner disk 13 are interference fit;

[0032] By setting the sealing ring 14, the sealing ring 14 plays a positioning role for the inner disk 13. On the one hand, the sealing ring 14 can be interference fit with the inner disk 13 to achieve the purpose of sealing the bottom of the insulating cylinder 1, prevent dust and water vapor from invading the insulating cylinder 1, and ensure the service life of internal parts. On the other hand, the sealing ring 14 can support and position the inner disk 13 at a corresponding position to ensure that the inner disk 13 can be stably connected to the clamping mechanism.

[0033] A telescopic sleeve 17 is provided under the inner plate 13, the upper end of the telescopic sleeve 17 is connected to the inner plate 13, the lower end of the telescopic sleeve 17 is connected to the lower end pull rod 12, and the telescopic sleeve 17 is hollow;

[0034] By setting up the telescopic sleeve 17, the telescopic sleeve 17 utilizes the connection with the inner disk 13 and the lower end pull rod 12 so that it can tightly seal the gap between the lower end pull rod 12 and the inner disk 13 to ensure the air tightness of the insulating tube 1, and the telescopic sleeve 17 can also follow the movement of the lower end pull rod 12 to expand and contract, so that it will not have wear problems with the lower end pull rod 12.

[0035] A humidity test paper 8 is provided on the side of the insulating cylinder 1, one end of the humidity test paper 8 is located inside the insulating cylinder 1, and the other end is located outside the insulating cylinder 1, and the end of the humidity test paper 8 located outside is plastic-sealed;

[0036] By setting the humidity test paper 8, the humidity test paper 8 can detect the air humidity in the insulating cylinder 1 and display it through the change of its own color, so that the maintenance personnel can observe the air humidity in the insulating cylinder 1 from the outside and judge whether the insulating cylinder 1 can meet the use requirements. In addition, it needs to be further explained that the humidity test paper 8 is located at one end of the outside world and is isolated from the air by plastic packaging to avoid misdetection of the air outside the insulating cylinder 1.

[0037] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. An open insulating cylinder, comprising an insulating cylinder (1), characterized in that: A mounting hole (7) is provided at the bottom of the insulating cylinder (1); an upper plate (2) is provided on the insulating cylinder (1); the upper plate (2) and the insulating cylinder (1) are integrally formed; an upper wire outlet (3) and a lower wire outlet (4) are provided on the side of the insulating cylinder (1); a vacuum arc extinguishing chamber (9) is provided between the upper wire outlet (3) and the lower wire outlet (4); a bolt (10) connected to the upper wire outlet (3) and the vacuum arc extinguishing chamber (9) is provided in the upper plate (2); a lower end pull rod (12) is provided at the bottom of the vacuum arc extinguishing chamber (9); an inner plate (13) sleeved on the side of the lower end pull rod (12) is provided at the bottom of the insulating cylinder (1); the inner plate (13) is connected to the insulating cylinder (1) via a clamping mechanism close to the lower wire outlet (4); a heat sink (6) is provided on the side of the insulating cylinder (1) close to the lower wire outlet (4).

2. An open insulating cylinder according to claim 1, characterized in that: A conductive block (11) is additionally provided between the vacuum interrupter (9) and the upper outlet terminal (3), the conductive block (11) being used to fill the gap between the vacuum interrupter (9) and the upper outlet terminal (3), and the conductive block (11) can be replaced with a suitable size according to the gap.

3. The open insulating cylinder according to claim 1, characterized in that: The clamping mechanism comprises a limit card (15) and a spring (16); the limit card (15) is slidably connected in the insulating tube (1); a slide groove is provided in the insulating tube (1) to allow the limit card (15) to be received; the spring (16) is connected between the slide groove and the limit card (15) and applies an outward thrust to the limit card (15); and the lower side of the limit card (15) is provided with an inclined surface.

4. The open insulating cylinder according to claim 1, characterized in that: A sealing cover (5) is provided on the upper plate (2), the sealing cover (5) is clamped to the upper plate (2), and the sealing cover (5) is used to cover and protect the bolts (10) located in the upper plate (2).

5. The open insulating cylinder according to claim 1, characterized in that: A sealing ring (14) is provided in the insulating cylinder (1) at a position corresponding to the inner disk (13); the sealing ring (14) is in contact with the upper end surface of the inner disk (13), and the sealing ring (14) and the inner disk (13) are in interference fit.

6. The open insulating cylinder according to claim 1, characterized in that: A telescopic sleeve (17) is provided under the inner plate (13), the upper end of the telescopic sleeve (17) is connected to the inner plate (13), the lower end of the telescopic sleeve (17) is connected to the lower end pull rod (12), and the telescopic sleeve (17) is hollow.

7. The open insulating cylinder according to claim 1, characterized in that: A humidity test paper (8) is provided on the side of the insulating cylinder (1), one end of the humidity test paper (8) is located inside the insulating cylinder (1), and the other end is located outside the insulating cylinder (1), and the end of the humidity test paper (8) located outside is plastic-sealed.

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