Three-phase combined overvoltage protector

Abstract

The utility model provides a three-phase combined overvoltage protector, which relates to the technical field of electric power equipment and comprises a fixing plate, fixing bolts are mounted at four corners of the fixing plate, a mounting cavity is mounted at the top end of the fixing plate, a protector body is mounted above a protector base, and the protector body is mounted in the mounting cavity. An overvoltage action counter is installed at the front end of the protector base, a CT box is installed above the protector body, the outer wall of the protector body is made of synthetic silicone rubber, a cable is connected to the upper portion of the protector body, and the cable is a high-voltage insulation silicone rubber cable. The mounting mechanisms are arranged in the fixing plate, and the protector base and the protector main body can be conveniently mounted and dismounted through mutual cooperation of the mounting mechanisms, so that the protector base and the protector main body are more convenient and efficient during overhaul and maintenance; therefore, the convenience of the overvoltage protector in use is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a three-phase combined overvoltage protector. Background Art

[0002] With the development of economy and the continuous improvement of science and technology, my country's power industry has developed very rapidly. Overvoltage protectors are used more and more in daily life. Overvoltage protectors generally refer to ABB surge protectors. ABB surge protectors are an indispensable device for lightning protection of electronic equipment. They were often called "lightning arresters" or "overvoltage protectors" in the past.

[0003] However, when the existing overvoltage protector is in use, a plastic base of the overvoltage protector is usually fixed with multiple basic bolts, and the base is directly fixed on a metal base plate or a chassis. When the overvoltage protector is inspected and maintained, multiple bolts need to be removed. After the inspection is completed, it is installed, which is cumbersome during disassembly and installation, and it is inconvenient to conveniently disassemble and install the overvoltage protector, thereby greatly reducing the convenience of the overvoltage protector when in use. Therefore, the utility model proposes a three-phase combined overvoltage protector to solve the above problem. Summary of the invention

[0004] In view of the above problems, the utility model proposes a three-phase combined overvoltage protector, which solves the problem in the prior art that disassembly and installation are cumbersome and inconvenient to disassemble and install the overvoltage protector, thereby greatly reducing the convenience of the overvoltage protector in use.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a three-phase combined overvoltage protector, including a fixing plate, fixing bolts are installed at the four corners of the fixing plate, a mounting cavity is installed at the top of the fixing plate, a mounting mechanism is arranged inside the mounting cavity, a protector base is installed above the mounting cavity, a protector body is installed above the protector base, an overvoltage action counter is installed at the front end of the protector base, a CT box is installed above the protector body, the outer wall of the protector body is synthetic silicone rubber, a cable is connected above the protector body, and the cable adopts a high-voltage insulated silicone rubber cable.

[0006] A further improvement is that the mounting mechanism includes a mounting seat, a connecting rod, a fixing hole, a movable block and a transmission assembly, the mounting seat is installed on both sides of the bottom end of the mounting cavity, a connecting rod is arranged inside the mounting seat, the top end of the connecting rod extends to the outside of the mounting cavity, the top end of the connecting rod is connected to the bottom end of the protector base, a fixing hole is opened inside the connecting rod, and a movable block is arranged inside the fixing hole.

[0007] A further improvement is that the inner diameter of the fixing hole is larger than the outer diameter of the movable block, and a snap-fit ​​structure is formed between the fixing hole and the movable block.

[0008] Further improvements are: the transmission assembly includes a fixed cavity, a motor, a rotating sleeve, a rotating block, a transmission rod and a limiting structure, the fixed cavity is installed on both sides of the installation cavity, a motor is installed on one side of the fixed cavity, a rotating sleeve is installed inside the fixed cavity, the output end of the motor is connected to one end of the rotating sleeve, a rotating block is arranged inside the rotating sleeve, the inner wall of the rotating sleeve is provided with an internal thread, the outer wall of the rotating block is provided with an external thread, a threaded connection is formed between the rotating sleeve and the rotating block, a transmission rod is installed on one side of the rotating block, one end of the transmission rod extends to the inside of the installation cavity, and one end of the transmission rod is connected to one end of the movable block.

[0009] Further improvements are: the limiting structure includes a limiting groove, a limiting block, a positioning groove and a positioning block, the limiting groove is opened inside the fixed cavity, the limiting block is arranged inside the limiting groove, one end of the limiting block is connected to one end of the rotating sleeve, the positioning groove is opened above and below the transmission rod, the positioning block is arranged inside the positioning groove, and the positioning block is installed at one end inside the fixed cavity.

[0010] A further improvement is that the cross section of the limiting groove is larger than the cross section of the limiting block, and a rotation structure is formed between the limiting groove and the limiting block.

[0011] The beneficial effects of the utility model are as follows: by arranging an installation mechanism inside the fixed plate, and utilizing the mutual cooperation between the installation seat, connecting rod, fixing hole, movable block, fixing cavity, motor, rotating sleeve, rotating block, transmission rod, limit groove, limit block, positioning groove and positioning block of the installation mechanism, the protector base and the protector body can be conveniently installed and disassembled, making the protector base and the protector body more convenient and efficient during inspection and maintenance, thereby greatly improving the convenience of the overvoltage protector when in use; the units of the protector are all synthetic silicone rubber jackets, and the external connecting wires are led out with high-voltage insulated silicone rubber cables, which are fully sealed structures without any exposed metal except the cable terminal terminals; it is flame retardant, explosion-proof, and small in size, and the use of the overvoltage action counter has an intuitive overvoltage action counting function, which provides a basis for judging the protection between phases and between phases and ground, thereby greatly improving the practicality of the overvoltage protector when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the front cross-sectional structure of the installation mechanism of the utility model;

[0014] Figure 3 For the utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0015] Figure 4 For the utility model Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0016] Among them: 1. Fixed plate; 2. Fixed bolt; 3. Installation cavity; 4. Protector base; 5. Protector body; 6. Overvoltage action counter; 7. CT box; 8. Mounting seat; 9. Connecting rod; 10. Fixed hole; 11. Movable block; 12. Fixed cavity; 13. Motor; 14. Rotating sleeve; 15. Rotating block; 16. Transmission rod; 17. Limiting groove; 18. Limiting block; 19. Positioning groove; 20. Positioning block. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0018] according to Figure 1 , 2 , 3, and 4, the present embodiment proposes a three-phase combined overvoltage protector, comprising a fixing plate 1, wherein fixing bolts 2 are installed at the four corners of the fixing plate 1, a mounting cavity 3 is installed at the top of the fixing plate 1, a mounting mechanism is arranged inside the mounting cavity 3, a protector base 4 is installed above the mounting cavity 3, a protector body 5 is installed above the protector base 4, an overvoltage action counter 6 is installed at the front end of the protector base 4, a CT box 7 is installed above the protector body 5, the outer wall of the protector body 5 is synthetic silicone rubber, a cable is connected above the protector body 5, and the cable adopts The high-voltage insulated silicone rubber cable, when in use, the CT box 7 is respectively inserted into the protector body 5 according to the A, B, and C phases, and the network cable crystal head is connected to the action counter socket to complete the convenient installation of the overvoltage protector. The units of the protector are all synthetic silicone rubber jackets, and the external connection lines are led out with high-voltage insulated silicone rubber cables. It is a fully sealed structure, and there is no metal exposed except the cable terminal terminals; it is flame retardant, explosion-proof, and small in size. The use of the overvoltage action counter 6 has an intuitive overvoltage action counting function, which provides a basis for judging the protection between phases and between phases and ground, thereby greatly improving the practicality of the overvoltage protector when in use.

[0019] The mounting mechanism includes a mounting seat 8, a connecting rod 9, a fixing hole 10, a movable block 11 and a transmission assembly. The mounting seat 8 is installed on both sides of the bottom end of the mounting cavity 3. A connecting rod 9 is arranged inside the mounting seat 8. The top end of the connecting rod 9 extends to the outside of the mounting cavity 3. The top end of the connecting rod 9 is connected to the bottom end of the protector base 4. A fixing hole 10 is opened inside the connecting rod 9. A movable block 11 is arranged inside the fixing hole 10. The inner diameter of the fixing hole 10 is larger than the outer diameter of the movable block 11. A snap-fit ​​structure is formed between the fixing hole 10 and the movable block 11. The transmission assembly includes a fixed The fixed cavity 12, the motor 13, the rotating sleeve 14, the rotating block 15, the transmission rod 16 and the limiting structure, the fixed cavity 12 is installed on both sides of the installation cavity 3, the motor 13 is installed on one side of the fixed cavity 12, the rotating sleeve 14 is installed inside the fixed cavity 12, the output end of the motor 13 is connected to one end of the rotating sleeve 14, the rotating block 15 is arranged inside the rotating sleeve 14, the inner wall of the rotating sleeve 14 is arranged with an internal thread, the outer wall of the rotating block 15 is arranged with an external thread, the rotating sleeve 14 and the rotating block 15 are threadedly connected, the transmission rod 16 is installed on one side of the rotating block 15, and one end of the transmission rod 16 extends The protective device 4 is extended into the interior of the installation cavity 3, and one end of the transmission rod 16 is connected to one end of the movable block 11. When in use, the protector base 4 is taken out, and the connecting rod 9 is placed into the interior of the mounting seat 8. When the mounting seat 8 and the connecting rod 9 are engaged with each other, the motor 13 is started, and the rotating sleeve 14 is driven to rotate under the limit of the limit groove 17 and the limit block 18. Since the rotating sleeve 14 and the rotating block 15 are threadedly connected, the rotating block 15 is driven to move, and then under the limit of the positioning groove 19 and the positioning block 20, the transmission rod 16 is driven to move by the rotating block 15, and then the movable block 11 is driven to move, and the movable block 11 is moved to the fixed position. Inside the fixed hole 10, the position of the connecting rod 9 is engaged to complete the installation of the protector. When it needs to be repaired, the staff starts the motor 13 to reverse it, and uses the transmission rod 16 to move the movable block 11 out of the fixed hole 10. At this time, the protector base 4 and the protector body 5 can be easily removed and repaired. After the repair is completed, repeat the above steps to complete the installation of the protector base 4 and the protector body 5, making the protector base 4 and the protector body 5 more convenient and efficient during repair and maintenance, thereby greatly improving the convenience of the overvoltage protector when in use.

[0020] The limiting structure includes a limiting groove 17, a limiting block 18, a positioning groove 19 and a positioning block 20. The limiting groove 17 is opened inside the fixed cavity 12, and the limiting block 18 is arranged inside the limiting groove 17. One end of the limiting block 18 is connected to one end of the rotating sleeve 14. The positioning groove 19 is opened above and below the transmission rod 16. The positioning block 20 is arranged inside the positioning groove 19. The positioning block 20 is installed at one end inside the fixed cavity 12. The cross section of the limiting groove 17 is larger than the cross section of the limiting block 18. The limiting groove 17 and the limiting block 18 constitute a rotating structure. When in use, the limiting groove 17 and the limiting block 18 cooperate with each other to limit the rotating sleeve 14 when it moves, so that the rotating sleeve 14 is more stable when it rotates. The positioning groove 19 and the positioning block 20 cooperate with each other to limit the transmission rod 16 when it moves, so that the transmission rod 16 is more stable when it moves.

[0021] Working principle: The staff first fixes the fixing plate 1 in the appropriate position by fixing the bolts 2, then takes out the protector base 4, and places the connecting rod 9 into the inside of the mounting seat 8. When the mounting seat 8 and the connecting rod 9 are engaged with each other, the motor 13 is started, and the rotating sleeve 14 is driven to rotate under the limit of the limit groove 17 and the limit block 18. Since the rotating sleeve 14 and the rotating block 15 are threadedly connected, the rotating block 15 is driven to move, and then under the limit of the positioning groove 19 and the positioning block 20, the rotating block 15 is used to drive the transmission rod 16 to move, and then the movable block 11 is driven to move, and the movable block 11 is moved. To the inside of the fixing hole 10, the position of the connecting rod 9 is engaged, and then the CT box 7 is respectively inserted into the protector body 5 according to the A, B, and C phases. The network cable crystal head is connected to the action counter socket to complete the convenient installation of the overvoltage protector. When it needs to be repaired, the staff starts the motor 13 to reverse it, and uses the transmission rod 16 to move the movable block 11 out of the inside of the fixing hole 10. At this time, the protector base 4 and the protector body 5 can be easily removed and repaired. After the repair is completed, repeat the above steps to complete the installation of the protector base 4 and the protector body 5.

[0022] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A three-phase combined overvoltage protector, comprising a fixing plate (1), characterized in that: Fixing bolts (2) are installed at the four corners of the fixing plate (1); a mounting cavity (3) is installed at the top of the fixing plate (1); a mounting mechanism is arranged inside the mounting cavity (3); a protector base (4) is installed above the mounting cavity (3); a protector body (5) is installed above the protector base (4); an overvoltage action counter (6) is installed at the front end of the protector base (4); a CT box (7) is installed above the protector body (5); the outer wall of the protector body (5) is made of synthetic silicone rubber; a cable is connected above the protector body (5); the cable is a high-voltage insulated silicone rubber cable.

2. A three-phase combined overvoltage protector according to claim 1, characterized in that: The mounting mechanism comprises a mounting seat (8), a connecting rod (9), a fixing hole (10), a movable block (11) and a transmission assembly. The mounting seat (8) is mounted on both sides of the bottom end of the mounting cavity (3). A connecting rod (9) is arranged inside the mounting seat (8). The top end of the connecting rod (9) extends to the outside of the mounting cavity (3). The top end of the connecting rod (9) is connected to the bottom end of the protector base (4). The fixing hole (10) is opened inside the connecting rod (9). The movable block (11) is arranged inside the fixing hole (10).

3. A three-phase combined overvoltage protector according to claim 2, characterized in that: The inner diameter of the fixing hole (10) is greater than the outer diameter of the movable block (11), and a snap-fit ​​structure is formed between the fixing hole (10) and the movable block (11).

4. A three-phase combined overvoltage protector according to claim 3, characterized in that: The transmission assembly comprises a fixed cavity (12), a motor (13), a rotating sleeve (14), a rotating block (15), a transmission rod (16) and a limiting structure. The fixed cavity (12) is mounted on both sides of the mounting cavity (3). The motor (13) is mounted on one side of the fixed cavity (12). The rotating sleeve (14) is mounted inside the fixed cavity (12). The output end of the motor (13) is connected to one end of the rotating sleeve (14). The rotating block (15) is arranged inside the rotating sleeve (14). The inner wall of the rotating sleeve (14) is provided with an internal thread. The outer wall of the rotating block (15) is provided with an external thread. The rotating sleeve (14) and the rotating block (15) are threadedly connected. The transmission rod (16) is mounted on one side of the rotating block (15). One end of the transmission rod (16) extends into the interior of the mounting cavity (3). One end of the transmission rod (16) is connected to one end of the movable block (11).

5. A three-phase combined overvoltage protector according to claim 4, characterized in that: The limiting structure comprises a limiting groove (17), a limiting block (18), a positioning groove (19) and a positioning block (20); the limiting groove (17) is arranged inside the fixed cavity (12); a limiting block (18) is arranged inside the limiting groove (17); one end of the limiting block (18) is connected to one end of the rotating sleeve (14); the positioning groove (19) is arranged above and below the transmission rod (16); a positioning block (20) is arranged inside the positioning groove (19); and the positioning block (20) is installed at one end inside the fixed cavity (12).

6. A three-phase combined overvoltage protector according to claim 5, characterized in that: The cross section of the limiting groove (17) is larger than the cross section of the limiting block (18), and a rotation structure is formed between the limiting groove (17) and the limiting block (18).

Images