Ceramic vacuum switch tube

Abstract

The utility model discloses a ceramic vacuum switch tube, and relates to the technical field of automobile high-voltage fuses, the ceramic vacuum switch tube comprises a ceramic shell and a reinforcing assembly, the upper end of the ceramic shell is fixedly connected with a movable cover plate, a guide sleeve is attached to the inner side of the movable cover plate, and the upper end in the ceramic shell is slidably connected with a movable conducting rod; the lower end of the ceramic shell is fixedly connected with a static cover plate, and a static conducting rod is arranged at the lower end in the ceramic shell. The ceramic vacuum switch tube is provided with the reinforcing rings, and the structural strength of the movable cover plate and the static cover plate is enhanced through the reinforcing rings, thereby preventing the movable cover plate and the static cover plate from sinking due to strong impact and the like, and prolonging the service life of the whole vacuum switch tube. Meanwhile, the four supporting blocks on the outer sides of the reinforcing rings on the inner sides of the movable cover plate and the static cover plate are correspondingly buckled in the mounting grooves matched with the structural size to be fixed, so that the mounting structural strength of the reinforcing rings, the movable cover plate and the static cover plate is improved, and the mounting strength of the movable cover plate and the static cover plate can also be improved through the counterpoint buckling connection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of power switches, in particular to a ceramic vacuum switch tube. Background Art

[0002] Ceramic vacuum switch tube is a new type of core component of high-performance medium and high voltage power switch. Its main function is to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off from the power supply through the excellent insulation of the vacuum in the tube, so as to achieve the function of safely breaking the circuit and controlling the power grid, and avoid accidents and unexpected events. Compared with oil-type arc-extinguishing switches, ceramic vacuum switch tubes have the characteristics of energy saving, material saving, fire prevention, explosion prevention, small size, long life, low maintenance cost, reliable operation and no pollution. With the successful implementation of the "oil-free" transformation of my country's power distribution system in recent years, the application of vacuum interrupters has become more and more extensive.

[0003] For example, the utility model with application number CN202021225084.6 discloses a vacuum switch tube for indoor circuit breakers, comprising a ceramic shell, a moving end cover, a shielding cover and a static end cover. The moving end cover is brazed on the top of the ceramic shell, the static end cover is brazed on the bottom of the ceramic shell, and the shielding cover is brazed on the circumferential inner wall of the ceramic shell. The vacuum switch tube for indoor circuit breakers adopts isostatically pressed 95% porcelain with good uniformity and consistency, and ensures the size, roundness and inner diameter requirements of large-size porcelain shells, while meeting the relevant performance requirements of the vacuum switch tube for porcelain shells. By arranging a buckle plate on the outside of the shielding cover and cooperating with the boss buckle inside the ceramic shell, reasonable design ensures that the large current carrying capacity requirements of the vacuum switch tube are met. Through the reasonable layout and optimized design of the internal space of the vacuum switch tube, the temperature rise and heat dissipation requirements of the vacuum tube when current is passing are met, and the performance is reliable and stable.

[0004] The high-speed scanners similar to the above applications currently have the following shortcomings:

[0005] The ceramic vacuum switch tube has poor protective strength, which can easily lead to overall deformation, thereby affecting the sealing performance, service life and overall safety of the entire ceramic vacuum switch tube.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and a ceramic vacuum switch tube is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a ceramic vacuum switch tube to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ceramic vacuum switch tube, comprising a ceramic shell and a reinforcement component, wherein a moving cover plate is fixedly connected to the upper end of the ceramic shell, and a guide sleeve is fitted on the inner side of the moving cover plate, a moving conductive rod is slidably connected to the upper end of the interior of the ceramic shell, a static cover plate is fixedly connected to the lower end of the ceramic shell, and a static conductive rod is arranged at the lower end of the interior of the ceramic shell, the reinforcement component for reinforcement is arranged on the inner side of the moving cover plate and the static cover plate, the reinforcement component comprises a reinforcement ring and a support block, and support blocks are fixedly connected to the outer side of the reinforcement ring, and mounting grooves are provided at the upper and lower ends of the interior of the ceramic shell.

[0009] Furthermore, the reinforcement ring is snap-connected to the ceramic shell through a support block and a mounting groove, and the support block is triangular in shape.

[0010] Furthermore, the reinforcement assembly also includes a sealing sleeve, the sealing sleeve is attached to the outer side of the rear end of the reinforcement ring, and the sealing sleeve passes through the interior of the support block.

[0011] Furthermore, a protective component is fixedly connected to the outside of the ceramic shell, and the protective component includes a ring sleeve, a static protective sheet and a rubber sleeve. The inside of the ring sleeve is fixedly connected to the static protective sheet, and the rubber sleeve is bonded to the inside of the ring sleeve.

[0012] Furthermore, the protective assembly also includes a connecting rod, a dynamic protective plate and a support spring. The outer side of the static protective plate is fixedly connected to a connecting rod, and the connecting rod is T-shaped. The outer side of the connecting rod is slidably connected to a dynamic protective plate at one end away from the ceramic shell, and a support spring is sleeved on the outer side of the connecting rod.

[0013] Furthermore, there are four ring sleeves equidistantly distributed on the outer surface of the ceramic shell, and the ring sleeves are fluffy and porous.

[0014] Furthermore, the dynamic protection sheet is elastically connected to the static protection sheet via a support spring, and the connecting rod runs through the middle of the static protection sheet.

[0015] Furthermore, a bellows is installed at the upper end of the ceramic shell, and an auxiliary shielding cover is arranged at the bottom end of the bellows, and contact pieces are installed at the ends of the moving conductive rod and the static cover plate that are close to each other.

[0016] The utility model provides a ceramic vacuum switch tube, which has the following beneficial effects:

[0017] 1. The utility model is provided with a reinforcement ring, which enhances the structural strength of the dynamic cover plate and the static cover plate to prevent the two from being dented due to strong impacts, thereby improving the service life of the entire vacuum switch tube. At the same time, the support block is buckled with the mounting groove on the inner side of the ceramic shell, which not only increases the installation structural strength of the reinforcement ring and the dynamic cover plate and the static cover plate, but also improves the installation strength of the dynamic cover plate and the static cover plate through the alignment buckle.

[0018] 2. The utility model is provided with a sealing sleeve, which can effectively seal the vacuum environment inside the ceramic shell through the sealing limit of the sealing sleeve, and can also block and protect the connection between the dynamic cover plate, the static cover plate and the reinforcement ring, thereby improving the overall installation strength.

[0019] 3. The utility model is provided with a ring sleeve, and four annular ring sleeves are sleeved on the outside of the ceramic shell for protection. The ring sleeve is made of a fluffy and porous foam material as a whole, which can effectively protect against external impacts. At the same time, the protruding ring sleeve can also receive the impact when falling, and cooperate with the internal buffer protection part to absorb the applied force and improve the overall protection strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a ceramic vacuum switch tube of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a ceramic vacuum switch tube of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of a static cover plate and a reinforcement component of a ceramic vacuum switch tube of the utility model;

[0023] Figure 4 The utility model is a three-dimensional structural schematic diagram of a protective component of a ceramic vacuum switch tube.

[0024] In the figure: 1. Ceramic shell; 2. Moving cover plate; 3. Guide sleeve; 4. Moving conductive rod; 5. Bellows; 6. Auxiliary shielding cover; 7. Contact piece; 8. Static conductive rod; 9. Static cover plate; 10. Reinforcement assembly; 1001. Reinforcement ring; 1002. Support block; 1003. Sealing sleeve; 11. Protection assembly; 1101. Ring sleeve; 1102. Static protection sheet; 1103. Connecting rod; 1104. Moving protection sheet; 1105. Support spring; 1106. Rubber sleeve; 12. Mounting groove. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, a ceramic vacuum switch tube includes a ceramic shell 1 and a reinforcement component 10, wherein a moving cover plate 2 is fixedly connected to the upper end of the ceramic shell 1, and a guide sleeve 3 is attached to the inner side of the moving cover plate 2, a moving conductive rod 4 is slidably connected to the upper end of the interior of the ceramic shell 1, a static cover plate 9 is fixedly connected to the lower end of the ceramic shell 1, and a static conductive rod 8 is arranged at the lower end of the interior of the ceramic shell 1, a reinforcement component 10 for reinforcement is arranged on the inner side of the moving cover plate 2 and the static cover plate 9, the reinforcement component 10 includes a reinforcement ring 1001 and a support block 1002, and the support block 1002 is fixedly connected to the outer side of the reinforcement ring 1001 around, the reinforcement ring 1001 is snap-connected to the ceramic shell 1 through the support block 1002 and the mounting groove 12, and the support block 1002 is triangular, and a reinforcement ring 10 is fixed to one end of the moving cover plate 2 and the static cover plate 9 close to the inner side of the ceramic shell 1 01 is used to improve the installation strength of the two cover plates and prevent them from being dented due to strong impact, thereby improving the service life of the entire vacuum switch tube. A mounting groove 12 is opened at the upper and lower ends of the inner side of the ceramic shell 1. Four support blocks 1002 on the outer side of the reinforcement ring 1001 on the inner side of the moving cover plate 2 and the static cover plate 9 are correspondingly snapped into the mounting groove 12 with the same structural dimensions and fixed. On the one hand, the inverted triangle-shaped support blocks 1002 increase the installation structural strength of the reinforcement ring 1001 and the moving cover plate 2 and the static cover plate 9 to prevent them from detaching. On the other hand, the connection method of the alignment snap buckle can also improve the installation strength of the moving cover plate 2 and the static cover plate 9 to prevent them from being dislocated, fractured or damaged due to external torque, thereby improving the structural strength and internal vacuum sealing of the entire ceramic vacuum switch tube. The reinforcement assembly 10 also includes a sealing sleeve 1003. The sealing sleeve 1003 is attached to the outer side of the rear end of the reinforcement ring 1001, and the sealing sleeve 1003 runs through the inside of the support block 1002. A through hole is set at the right-angle end of the reinforcement ring 1001, which is used to place the high-temperature resistant sealing sleeve 1003 for installation. The sealing sleeve 1003 can not only effectively seal the vacuum environment inside the ceramic shell 1, but also block and protect the connection between the dynamic cover plate 2, the static cover plate 9 and the reinforcement ring 1001, thereby improving the overall installation strength. The upper and lower ends of the ceramic shell 1 are provided with installation grooves 12.

[0027] like Figure 1 and Figure 4As shown, a protective component 11 is fixedly connected to the outside of the ceramic shell 1, and the protective component 11 includes a ring sleeve 1101, a static protective sheet 1102 and a rubber sleeve 1106. The static protective sheet 1102 is fixedly connected to the inside of the ring sleeve 1101, and the rubber sleeve 1106 is bonded to the inside of the ring sleeve 1101. There are four ring sleeves 1101 equidistantly distributed on the outer surface of the ceramic shell 1, and the ring sleeves 1101 are fluffy and porous. Four annular ring sleeves 1101 are sleeved on the outside of the ceramic shell 1 for protection. The ring sleeve 1101 is made of a fluffy and porous foam material as a whole, so it can effectively protect against external impacts. At the same time, the protruding ring sleeve 1101 can also be used to receive a drop, thereby improving the overall protection strength. The protection component 11 also includes a connecting rod 1103, a dynamic protection sheet 1104 and a support spring 1105. The connecting rod 1103 is fixedly connected to the outer side of the static protection sheet 1102, and the connecting rod 1103 is T-shaped. The dynamic protection sheet 1104 is slidably connected to the end of the outer side of the connecting rod 1103 away from the ceramic shell 1, and the support spring 1105 is sleeved on the outer side of the connecting rod 1103. The dynamic protection sheet 1104 is elastically connected to the static protection sheet 1102 through the support spring 1105, and the connecting rod 1103 runs through the middle part of the static protection sheet 1102. A hard static protection sheet 1102, a connecting rod 1103 and a dynamic protection sheet 1104 are arranged inside the ring sleeve 1101. The dynamic protection sheet 1104 is lifted up by the support spring 1105 and can slide along with the connecting rod 1103, so that it can be received and buffered when subjected to external impact, thereby reducing the impact on the ceramic shell 1 and improving the overall protection strength. A bellows 5 is installed at the upper end of the ceramic housing 1, and an auxiliary shielding cover 6 is arranged at the bottom end of the bellows 5. Contact pieces 7 are installed at the ends close to the moving conductive rod 4 and the static cover plate 9.

[0028] In summary, if Figures 1 to 4As shown, when the ceramic vacuum switch tube is in use, firstly, a reinforcing ring 1001 is fixed to one end of the moving cover plate 2 and the static cover plate 9 close to the inner side of the ceramic shell 1 for connection, so as to improve the installation strength of the two cover plates, avoid the moving cover plate 2 and the static cover plate 9 from being sunken due to external forces, and improve the service life of the entire vacuum switch tube, and a mounting groove 12 is provided at both upper and lower ends of the inner side of the ceramic shell 1, and four supporting blocks 1002 on the outer side of the reinforcing ring 1001 on the inner side of the moving cover plate 2 and the static cover plate 9 are all snapped into the mounting groove 12 with the same structural dimensions for fixation, on the one hand, the inverted triangle-shaped supporting blocks 1002 increase the installation structural strength of the reinforcing ring 1001 and the moving cover plate 2 and the static cover plate 9, and on the other hand, the connection mode of the alignment buckle can also improve the installation strength of the moving cover plate 2 and the static cover plate 9, avoid the two from being dislocated, fractured, or damaged due to external torque, thereby improving the structural strength and internal vacuum sealing of the entire ceramic vacuum switch tube, and at the same time A ring-shaped high-temperature resistant sealing sleeve 1003 passes through the right-angle end of the reinforcement ring 1001 to seal the vacuum environment inside the ceramic shell 1, thereby improving the sealing performance of the ceramic vacuum switch tube; and four groups of ring sleeves 1101 are arranged at the outer end of the ceramic shell 1, and the ring sleeves 1101 are tightened and sleeved on the outer surface of the ceramic shell 1 through the rubber sleeves 1106 integrated on the inner side. In this way, it is convenient for users to remove or install it according to needs, and a hard static protective sheet 1102, a connecting rod 1103 and a dynamic protective sheet 1104 are arranged inside the ring sleeve 1101. When the entire ceramic vacuum switch tube accidentally falls or is subjected to external impact, it is first protected by the ring sleeve 1101 made of fluffy and porous foam material, and then transmitted to the dynamic protective sheet 1104. The dynamic protective sheet 1104 is pressed inward to compress the support spring 1105, and slides inward itself, thereby playing a role of buffer protection, reducing the impact on the ceramic shell 1, and improving the overall protection strength.

[0029] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A ceramic vacuum switch tube, comprising a ceramic housing (1) and a reinforcement component (10), characterized in that: The upper end of the ceramic shell (1) is fixedly connected to a moving cover plate (2), and a guide sleeve (3) is attached to the inner side of the moving cover plate (2); the upper end of the interior of the ceramic shell (1) is slidably connected to a moving conductive rod (4); the lower end of the ceramic shell (1) is fixedly connected to a stationary cover plate (9), and a stationary conductive rod (8) is arranged at the lower end of the interior of the ceramic shell (1); the reinforcement component (10) for reinforcement is arranged on the inner side of the moving cover plate (2) and the stationary cover plate (9); the reinforcement component (10) comprises a reinforcement ring (1001) and a support block (1002), and the outer side of the reinforcement ring (1001) is fixedly connected to the support block (1002); and the upper and lower ends of the interior of the ceramic shell (1) are provided with mounting grooves (12).

2. The ceramic vacuum switch tube according to claim 1, characterized in that: The reinforcement ring (1001) is snap-connected to the ceramic housing (1) via a support block (1002) and a mounting groove (12), and the support block (1002) is triangular in shape.

3. The ceramic vacuum switch tube according to claim 1, characterized in that: The reinforcement assembly (10) further comprises a sealing sleeve (1003), the sealing sleeve (1003) being attached to the outer side of the rear end of the reinforcement ring (1001), and the sealing sleeve (1003) passing through the interior of the support block (1002).

4. The ceramic vacuum switch tube according to claim 1, characterized in that: The ceramic housing (1) is fixedly connected to a protective component (11) on its outside, and the protective component (11) comprises a ring sleeve (1101), a static protective sheet (1102) and a rubber sleeve (1106); the ring sleeve (1101) is fixedly connected to a static protective sheet (1102) on its inside, and the rubber sleeve (1106) is bonded to the inside of the ring sleeve (1101).

5. The ceramic vacuum switch tube according to claim 4, characterized in that: The protection component (11) further comprises a connecting rod (1103), a dynamic protection sheet (1104) and a support spring (1105); the outer side of the static protection sheet (1102) is fixedly connected to the connecting rod (1103), and the connecting rod (1103) is T-shaped; the outer side of the connecting rod (1103) is slidably connected to the dynamic protection sheet (1104) at one end away from the ceramic housing (1), and the outer side of the connecting rod (1103) is sleeved with the support spring (1105).

6. The ceramic vacuum switch tube according to claim 4, characterized in that: There are four ring sleeves (1101) equidistantly distributed on the outer surface of the ceramic shell (1), and the ring sleeves (1101) are fluffy and porous.

7. The ceramic vacuum switch tube according to claim 5, characterized in that: The dynamic protection sheet (1104) is elastically connected to the static protection sheet (1102) via a support spring (1105), and the connecting rod (1103) passes through the middle of the static protection sheet (1102).

8. The ceramic vacuum switch tube according to claim 1, characterized in that: A bellows (5) is installed at the upper end of the ceramic housing (1), and an auxiliary shielding cover (6) is provided at the bottom end of the bellows (5). Contact pieces (7) are installed at the adjacent ends of the moving conductive rod (4) and the static cover plate (9).

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