Isolating switch for composite apparatus
By setting the side threaded holes and the rear end installation holes of the shield cover on the moving end conductor, the electric breakdown risk caused by the shield cover on the moving end conductor is solved, and safer electrical operation is achieved.
Patent Information
- Application Number
- CN202422426750.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The moving end conductor shield of the existing isolating switch adopts the side top wire installation method, which causes the top wire hole to have internal threads, which is prone to burrs, affecting the electric field and increasing the risk of electric breakdown.
A threaded hole facing the side is provided in the moving end conductor, and a mounting hole is opened at the rear end of the shield cover. The shield cover is fixed by screws, so that the screw installation position is in the shielded area. A countershot or disc head screw is used to reduce the impact on the electric field.
It effectively prevents the occurrence of electric breakdown, reduces the risk of discharge, and improves the safety and reliability of electrical appliances.
Smart Images
Figure CN223273171U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage switches, in particular to an isolating switch for combined electrical appliances. Background Art
[0002] Existing isolating switches such as Figure 1 As shown, the shielding cover of the moving end conductor is installed by side top screw installation. The shielding cover belongs to the high-voltage side, and the top screw hole is opened on the side. The top screw hole has an internal thread, which is prone to burrs and other conditions. It has a great impact on the electric field and is prone to electrical breakdown. Even after processing, it is still in the high-voltage area and has a high risk of discharge. Summary of the Invention
[0003] The utility model provides an isolating switch for a combined electrical appliance in order to overcome the deficiencies of the prior art.
[0004] To achieve the above-mentioned purpose, an isolating switch for a combination electrical appliance is designed, comprising a housing, a grounding contact seat is installed on the left side of the housing, a disc insulator 2 is installed on the right side of the housing, a static end of the isolating switch is installed on the inner side of the housing of the disc insulator 2, an isolating switch contact seat is provided on one side of the static end of the isolating switch, a disc insulator 1 is installed on the top of the housing, a moving end conductor is installed at the lower end of the disc insulator 1, a conductive rod is provided below the moving end conductor, the conductive rod is connected to the moving end conductor through a transmission mechanism, the transmission mechanism is used to drive the conductive rod to move left and right to contact the grounding contact seat or the isolating switch contact seat, two groups of left and right protrusions are provided at the bottom of the moving end conductor, and threaded holes facing the side are opened at the protrusions, and a mounting hole is opened at the rear end of the shielding cover, and screws are passed through the mounting holes and screwed into the threaded holes to fix the two shielding covers on both sides of the moving end conductor respectively.
[0005] The transmission mechanism is a gear, one side of the conductive rod is a rack, and the gear is meshed with the rack.
[0006] The gear is connected to an operating mechanism outside the housing.
[0007] A quick grounding switch contact seat is provided below the static end of the isolating switch, and a quick grounding switch is provided below the shell.
[0008] The grounding contact seat is fixedly connected to the grounding insulator, the grounding insulator is fixedly connected to the shell, and the grounding contact seat is bowl-shaped.
[0009] Compared with the prior art, the utility model provides a protrusion on the moving end conductor to open a threaded hole facing the side, and opens a mounting hole at the rear end of the shielding cover, so that the installation position of the screw is in the shielded area, effectively preventing electrical breakdown. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 Schematic diagram of the prior art.
[0011] Figure 2 It is a schematic diagram of the present utility model.
[0012] Figure 3 It is an enlarged view of the utility model.
[0013] See also Figure 1-Figure 3 , among which, 1 is the shell, 2 is the disc insulator 1, 3 is the moving end conductor, 3-1 is the protrusion, 3-2 is the threaded hole, 4 is the conductive rod, 4-1 is the rack, 5 is the gear, 6 is the shielding cover, 6-1 is the mounting hole, 7 is the disc insulator 2, 8 is the static end of the disconnector, 8-1 is the disconnector contact seat, 8-2 is the fast grounding switch contact seat, 9 is the grounding contact seat, 10 is the grounding insulator, and 11 is the fast grounding switch. DETAILED DESCRIPTION
[0014] The present invention will be further described below with reference to the accompanying drawings.
[0015] like Figure 1-Figure 3 As shown, a grounding contact seat 9 is installed on the left side of the housing 1, a disc insulator 2 7 is installed on the right side of the housing 1, and a static end 8 of the isolating switch is installed on the inner side of the housing 1 of the disc insulator 2 7. An isolating switch contact seat 8-1 is provided on one side of the static end 8 of the isolating switch. A disc insulator 1 2 is installed on the top of the housing 1, and a moving end conductor 3 is installed at the lower end of the disc insulator 1 2. A conductive rod 4 is provided below the moving end conductor 3. The conductive rod 4 is connected to the moving end conductor 3 through a transmission mechanism. The transmission mechanism is used to drive the conductive rod 4 to move left and right to contact the grounding contact seat 9 or the isolating switch contact seat 9-1. Two groups of left and right protrusions 3-1 are provided at the bottom of the moving end conductor 3. A threaded hole 3-2 facing the side is opened at the protrusion 3-1. A mounting hole 6-1 is opened at the rear end of the shielding cover 6. Screws are passed through the mounting hole 6-1 and screwed into the threaded hole 3-2 to fix the two shielding covers 6 on both sides of the moving end conductor 3.
[0016] The transmission mechanism is a gear 5, and one side of the conductive rod 4 is a rack 4-1, and the gear 5 is meshed with the rack 4-1.
[0017] The gear 5 is connected to an operating mechanism outside the housing 1 .
[0018] A quick earthing switch contact seat 8 - 2 is provided below the static end 8 of the isolating switch, and a quick earthing switch 11 is provided below the housing 1 .
[0019] The grounding contact seat 9 is fixedly connected to the grounding insulator 10 , and the grounding insulator 10 is fixedly connected to the housing 1 . The grounding contact seat 9 is bowl-shaped.
[0020] When the utility model is in use, the gear 5 is driven to rotate by the operating mechanism outside the shell 1, and the gear 5 is engaged with the rack 4-1 to enable the conductive rod 4 to move left and right. When the conductive rod 4 is in the middle position, it is in a bilaterally disconnected state. When the grounding switch needs to be closed, the conductive rod 4 moves to the left end and contacts the grounding contact seat 9; when the isolating switch needs to be closed, the conductive rod 4 moves to the right side and contacts the isolating switch contact seat 8-1; when the fast grounding switch needs to be closed, the contact of the fast grounding switch 11 extends into the fast grounding switch contact seat 8-2.
[0021] Shielding cover 6 is used to uniformly distribute the internal electric field. Mounting holes 6-1 are defined at the rear end of shielding cover 6, which is secured to threaded holes 3-2 on protrusion 3-1 of moving-end conductor 3 using screws. The screws are positioned within the shielded area. Either countersunk or pan-head screws can be used. Even with the presence of these holes, the electric field is virtually unaffected, effectively preventing electrical breakdown. Grounding contact 9 is connected to the external ground via grounding insulator 10. Grounding contact 9 can be designed to be sunken into housing 1, and its bowl-shaped shape facilitates uniform distribution of the electric field.
Claims
1. An isolating switch for a combination electrical appliance, comprising a housing (1), characterized in that: A grounding contact seat (9) is installed on the left side of the housing (1), a disc insulator No. 2 (7) is installed on the right side of the housing (1), a static end (8) of an isolating switch is installed on the inner side of the housing (1), and an isolating switch contact seat (8-1) is provided on one side of the static end (8) of the isolating switch. A disc insulator No. 1 (2) is installed on the upper side of the housing (1), a moving end conductor (3) is installed on the lower end of the disc insulator No. 1 (2), and a conductive rod (4) is provided below the moving end conductor (3). The conductive rod (4) is connected to the transmission mechanism. The structure is connected to the moving end conductor (3), and the transmission mechanism is used to drive the conductive rod (4) to move left and right to contact the grounding contact seat (9) or the isolating switch contact seat (8-1). The bottom of the moving end conductor (3) is provided with two groups of left and right protrusions (3-1), and the protrusions (3-1) are provided with threaded holes (3-2) facing the side. The rear end of the shielding cover (6) is provided with a mounting hole (6-1), and screws are passed through the mounting hole (6-1) and screwed into the threaded hole (3-2) to fix the two shielding covers (6) on both sides of the moving end conductor (3).
2. The isolating switch for combined electrical equipment according to claim 1, characterized in that: The transmission mechanism is a gear (5), one side of the conductive rod (4) is a rack (4-1), and the gear (5) is meshed with the rack (4-1).
3. The isolating switch for combined electrical equipment according to claim 2, characterized in that: The gear (5) is connected to an operating mechanism outside the housing (1).
4. The isolating switch for a combination electrical appliance according to claim 1, characterized in that: A quick grounding switch contact seat (8-2) is provided below the static end (8) of the isolating switch, and a quick grounding switch (11) is provided below the housing (1).
5. The isolating switch for combined electrical equipment according to claim 1, characterized in that: The grounding contact seat (9) is fixedly connected to the grounding insulator (10), and the grounding insulator (10) is fixedly connected to the housing (1). The grounding contact seat (9) is bowl-shaped.