Low-voltage draw-out type complete low-voltage switchgear

Abstract

The utility model discloses a low-voltage draw-out type complete low-voltage switch device, and relates to the technical field of switch devices, in particular to a low-voltage draw-out type complete low-voltage switch device, which comprises a cabinet body, a mounting bin is arranged at the upper end of the cabinet body, a cooling box is arranged in the mounting bin, and a connecting sliding rod is arranged on the inner wall of the cooling box. A connecting ring is slidably connected to the outer surface of the connecting sliding rod, a first spring is arranged on the lower surface of the connecting ring, a limiting piece is arranged at the end, away from the connecting ring, of the first spring, the limiting piece is arranged at the lower end of the connecting sliding rod, and the first spring sleeves the outer surface of the connecting sliding rod. According to the low-voltage draw-out type complete low-voltage switchgear, through cooperative arrangement of the cooling box, the connecting frame, the arched filter cover, the filter screen, the fixed cylinder, the driving motor, the turbine blade, the ventilation net, the air guide hole and the drainage hole, the low-voltage draw-out type complete low-voltage switchgear has the effects of improving the heat dissipation effect of the switchgear and improving the dustproof performance of the switchgear.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage switch equipment, in particular to a low-voltage withdrawable complete set of low-voltage switch equipment. Background Art

[0002] Switchgear is a commonly used equipment in power transmission and distribution of power grids. It is widely used in power plants, power transmission of small and medium-sized generators, power distribution of industrial and mining enterprises, and power receiving and transmission of secondary substations of power systems, as well as starting of large high-voltage motors. MNS low-voltage electric control cabinet is an advanced low-voltage switchgear designed and improved with reference to the design of foreign MNS series low-voltage switchgear. It meets the needs of various power supply and distribution and can be widely used in various low-voltage distribution systems such as power plants, substations, industrial enterprises, buildings, hotels, and municipal construction.

[0003] During the use of existing switchgear, the functional rooms of low-voltage switchgear are mostly closed, which is not conducive to the dissipation of heat and has poor heat dissipation performance. At the same time, when the bottom of the control box of the existing switch cabinet is not level, the drawer will automatically reset and pop out, causing inconvenience to the user. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a low-voltage withdrawable complete low-voltage switchgear, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a low-voltage withdrawable complete low-voltage switchgear, comprising a cabinet, an installation bin is provided at the upper end of the cabinet, a cooling box is placed inside the installation bin, a connecting slide rod is provided on the inner wall of the cooling box, a connecting ring is slidably connected to the outer surface of the connecting slide rod, a first spring is provided on the lower surface of the connecting ring, a limiting piece is provided on the end of the first spring away from the connecting ring, the limiting piece is provided on the lower end of the connecting slide rod, the first spring is sleeved on the outer surface of the connecting slide rod, a connecting frame is provided on the outer surface of the connecting ring, the connecting frame is slidably connected to the inside of the installation bin, an arc-shaped filter cover is provided on the upper surface of the connecting frame, a limiting strip is provided on the inner wall of the cooling box, a filter screen is placed on the upper surface of the limiting strip, a mounting plate is provided at one end of the filter screen, the filter screen and the mounting plate are slidably connected to the inside of the cooling box, and a fixing cylinder is provided at the lower end of the cooling box.

[0008] Optionally, a support frame is provided on the inner wall of the fixed cylinder, a drive motor is provided in the middle of the support frame, and a turbine blade is provided at one end of the output shaft of the drive motor.

[0009] Optionally, an air permeable net is provided on the inner top wall of the installation bin, an air guide hole is provided on one side of the air permeable net, and a drainage hole is provided on the inner wall of the cabinet, and the drainage hole and the air guide hole are interconnected.

[0010] Optionally, a connecting through hole is opened on the side of the cabinet, a fixing bolt is inserted into the connecting through hole, and the cooling box is threadedly connected to the inside of the installation bin through the fixing bolt.

[0011] Optionally, an L-shaped connecting seat is provided on the inner wall of the cabinet, a fixed drawer is slidably connected to the upper surface of the L-shaped connecting seat, and limiting holes are provided on the inner side surface of the L-shaped connecting seat, and the number of limiting holes on each L-shaped connecting seat is two.

[0012] Optionally, a connecting groove is provided inside the fixed drawer, and the internal sliding connection of the connecting groove is connected to a limiting block, the outer surface of the limiting block is provided with a support ring, the internal sliding connection of the support ring is connected to a limiting slide rod, both ends of the limiting slide rod are provided on the inner wall of the connecting groove, and the outer surface of the support ring is provided with a second spring, and one end of the second spring is provided on the inner wall of the connecting groove.

[0013] Optionally, a control groove is provided on the outer side of the fixed drawer, a handle is slidably connected to the inside of the control groove, a traction rope is provided on the outer surface of the control handle, the end of the traction rope away from the control handle is provided on a limit block, a guide roller is rotatably connected to the inside of the connecting groove, and the traction abuts against the outer surface of the guide roller, and the position of the limit block is adapted to the position of the limit hole.

[0014] Optionally, the bottom surface of the cabinet is provided with supporting legs, the inner bottom wall of the cabinet is provided with an exhaust hole, and a dust cover is provided inside the exhaust hole.

[0015] (III) Beneficial effects

[0016] The utility model provides a low-voltage withdrawable complete set of low-voltage switchgear, which has the following beneficial effects:

[0017] 1. The low-voltage withdrawable complete low-voltage switchgear has the effects of improving the heat dissipation effect of the switchgear and increasing the dustproofness of the switchgear through the coordinated arrangement of a cooling box, a connection frame, an arched filter cover, a filter screen, a fixing cylinder, a driving motor, a turbine blade, a breathable screen, an air guide hole and a discharge hole.

[0018] 2. The low-voltage withdrawable complete set of low-voltage switchgear has the effect of preventing the switchgear from being pulled out by itself through the arrangement of an L-shaped connecting seat, a fixed drawer, a limit card block, a second spring, a traction rope, a handle and a limit hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the cooling box of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the cabinet of the utility model from a top view;

[0022] Figure 4 This is a schematic diagram of the internal structure of the cabinet of the utility model from the front;

[0023] Figure 5 This is a schematic diagram of the internal structure of the fixed cylinder of the utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the fixed drawer of the utility model;

[0025] Figure 7 For this utility model Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0026] In the figure: 1. cabinet; 2. cooling box; 3. first spring; 4. connecting frame; 5. arc-shaped filter cover; 6. limit strip; 7. filter screen; 8. fixing cylinder; 9. driving motor; 10. turbine blade; 11. breathable net; 12. air guide hole; 13. drainage hole; 14. L-shaped connecting seat; 15. fixed drawer; 16. limit hole; 17. limit block; 18. second spring; 19. handle; 20. traction rope; 21. guide roller; 22. support leg. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1

[0029] A low-voltage withdrawable complete low-voltage switchgear comprises a cabinet 1, an installation bin is provided at the upper end of the cabinet 1, a cooling box 2 is placed inside the installation bin, a connecting slide rod is provided on the inner wall of the cooling box 2, a connecting ring is slidably connected to the outer surface of the connecting slide rod, a first spring 3 is provided on the lower surface of the connecting ring, a limiting piece is provided at one end of the first spring 3 away from the connecting ring, the limiting piece is provided at the lower end of the connecting slide rod, the first spring 3 is sleeved on the outer surface of the connecting slide rod, a connecting frame 4 is provided on the outer surface of the connecting ring, the connecting frame 4 is slidably connected to the inside of the installation bin, an arc-shaped filter cover 5 is provided on the upper surface of the connecting frame 4, and a connecting frame 4 is provided on the inner wall of the cooling box 2. A limit strip 6 is provided, a filter screen 7 is placed on the upper surface of the limit strip 6, a mounting plate is provided at one end of the filter screen 7, the filter screen 7 and the mounting plate are slidably connected inside the cooling box 2, a fixing cylinder 8 is provided at the lower end of the cooling box 2, a support frame is provided on the inner wall of the fixing cylinder 8, a driving motor 9 is provided in the middle of the support frame, a turbine blade 10 is provided at one end of the output shaft of the driving motor 9, an air permeable net 11 is provided on the inner top wall of the installation bin, an air guide hole 12 is provided on one side of the air permeable net 11, a drainage hole 13 is provided on the inner wall of the cabinet 1, the drainage hole 13 is communicated with the air guide hole 12, a connecting through hole is provided on the side of the cabinet 1, and the connecting through hole A fixing bolt is inserted inside, and the cooling box 2 is threadedly connected to the inside of the installation bin through the fixing bolt. An L-shaped connecting seat 14 is provided on the inner wall of the cabinet 1. A fixed drawer 15 is slidably connected to the upper surface of the L-shaped connecting seat 14. A limiting hole 16 is provided on the inner side of the L-shaped connecting seat 14. There are two limiting holes 16 on each L-shaped connecting seat 14. A connecting groove is provided inside the fixed drawer 15. The internal sliding connection of the connecting groove is connected to a limiting block 17. The outer surface of the limiting block 17 is provided with a support ring. The internal sliding connection of the support ring is connected to a limiting slide rod. The two ends of the limiting slide rod are arranged on the inner wall of the connecting groove. The outer surface of the support ring A second spring 18 is provided, one end of which is arranged on the inner wall of the connecting groove, a control groove is opened on the outer side of the fixed drawer 15, a handle 19 is slidably connected inside the control groove, a traction rope 20 is provided on the outer surface of the control handle 19, and one end of the traction rope 20 away from the control handle 19 is arranged on the limit block 17, a guide roller 21 is rotatably connected inside the connecting groove, and traction abuts on the outer surface of the guide roller 21, the position of the limit block 17 is matched with the position of the limit hole 16, a supporting leg 22 is provided on the bottom surface of the cabinet 1, an exhaust through hole is opened on the inner bottom wall of the cabinet 1, and a dust cover is provided inside the exhaust through hole.

[0030] In order to achieve the effect of improving the heat dissipation effect of the low-voltage withdrawable complete low-voltage switchgear and increasing the dustproofness of the switchgear, and to make the low-voltage withdrawable complete low-voltage switchgear have the effect of preventing the switchgear from self-pulling, as shown in the attached Figure 1-7As shown, the present application adopts the following structure, through the setting of the cooling box 2, the connecting frame 4, the arched filter cover, the filter screen 7, the fixing cylinder 8, the driving motor 9, the turbine blades 10, the air permeable net 11, the air guide hole 12 and the discharge hole 13, the L-shaped connecting seat 14, the fixing drawer 15, the limit block 17, the second spring 18, the traction rope 20, the handle 19 and the limit hole 16, during use, the cooling box 2 is fixed to the installation bin by the fixing bolts, and under the action of the arched process cover, the external dust impurities can be preliminarily filtered. At the same time, due to the arc shape of the arched filter cover, the larger impurities from the outside will slide from above the arched filter cover and will not accumulate above the arched filter cover. When larger impurities from the outside fall onto the arched filter cover, they will squeeze the arched filter cover and the connecting frame 4, thereby squeezing the first spring 3. Under the elastic force of the first spring 3, the impact force of the impact object will be buffered to protect the switch device body. At the same time, the gas containing dust passes through the arched filter cover and enters the interior of the cooling box 2, where it is filtered for the second time by the filter screen 7 to block most of the dust, thereby effectively improving the dustproof effect of the switch device (the switch device is generally set indoors and does not need to consider rain protection. The density efficiency of the arched filter cover is higher than the density of the filter screen 7). At the same time, the rotation of the driving motor 9 drives the turbine blades 10 to rotate, generating an airflow so that the filtered gas The air flows into the interior of the cabinet 1 in all directions through the air permeable net 11 and the air guide holes 12, and the equipment inside the cabinet 1 is fully cooled and dissipated. Finally, the hot air flows out through the exhaust holes at the bottom, thereby realizing that the low-voltage withdrawable complete low-voltage switchgear has the effect of improving the heat dissipation effect of the switchgear and increasing the dustproofness of the switchgear. When it is necessary to inspect and replace the internal equipment, by pulling the handle 19, under the action of traction, the limit block 17 is pulled, and the second spring 18 is squeezed to make the limit block 17 disengage from the limit hole 16, and then the drawer is quickly pulled out. When the upper limit block 17 of the drawer moves to the outside of the cabinet 1, under the elastic force of the second spring 18, The limit card block 17 is stuck in the outer limit hole 16 to fix the position of the drawer 15, thereby avoiding the phenomenon of automatic resetting and self-popup of the drawer when the bottom of the control box is not horizontal. When closing the drawer, the drawer is pushed, and the arc surface of the limit card block 17 contacts the limit edge, so that it is automatically stored in the fixed drawer 15, so that the fixed drawer 15 can be smoothly buckled into the inside of the solid. At the same time, when the limit card block 17 moves to the inner limit hole 16, it can be automatically popped out under the elastic force of the second spring 18, and the drawer 15 is firmly fixed, thereby achieving the effect of preventing the switch device from being automatically pulled out of the low-voltage withdrawable complete low-voltage switchgear;

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-voltage withdrawable complete low-voltage switchgear, comprising a cabinet, characterized in that: The upper end of the cabinet is provided with an installation bin, a cooling box is placed inside the installation bin, a connecting slide rod is provided on the inner wall of the cooling box, a connecting ring is slidably connected to the outer surface of the connecting slide rod, a first spring is provided on the lower surface of the connecting ring, a limiting piece is provided on the end of the first spring away from the connecting ring, the limiting piece is provided on the lower end of the connecting slide rod, the first spring is sleeved on the outer surface of the connecting slide rod, a connecting frame is provided on the outer surface of the connecting ring, the connecting frame is slidably connected to the inside of the installation bin, an arc-shaped filter cover is provided on the upper surface of the connecting frame, a limiting strip is provided on the inner wall of the cooling box, a filter screen is placed on the upper surface of the limiting strip, a mounting plate is provided at one end of the filter screen, the filter screen and the mounting plate are slidably connected to the inside of the cooling box, and a fixing cylinder is provided at the lower end of the cooling box.

2. A low-voltage withdrawable complete low-voltage switchgear according to claim 1, characterized in that: A support frame is arranged on the inner wall of the fixed cylinder, a driving motor is arranged in the middle of the support frame, and a turbine blade is arranged at one end of the output shaft of the driving motor.

3. The low-voltage withdrawable complete low-voltage switchgear according to claim 1 is characterized in that: The inner top wall of the installation bin is provided with an air permeable net, one side of the air permeable net is provided with an air guide hole, the inner wall of the cabinet is provided with a drainage hole, and the drainage hole and the air guide hole are communicated with each other.

4. The low-voltage withdrawable complete low-voltage switchgear according to claim 1 is characterized in that: A connecting through hole is provided on the side of the cabinet body, a fixing bolt is inserted into the connecting through hole, and the cooling box is threadedly connected to the inside of the installation bin through the fixing bolt.

5. The low-voltage withdrawable complete low-voltage switchgear according to claim 1 is characterized in that: The inner wall of the cabinet is provided with an L-shaped connecting seat, the upper surface of which is slidably connected with a fixed drawer, and the inner side surface of the L-shaped connecting seat is provided with limiting holes, and the number of limiting holes on each L-shaped connecting seat is two.

6. A low-voltage withdrawable complete low-voltage switchgear according to claim 5, characterized in that: A connecting groove is provided inside the fixed drawer, and a limiting block is slidably connected inside the connecting groove. A supporting ring is provided on the outer surface of the limiting block. A limiting slide rod is slidably connected inside the supporting ring. Both ends of the limiting slide rod are arranged on the inner wall of the connecting groove. A second spring is provided on the outer surface of the supporting ring, and one end of the second spring is arranged on the inner wall of the connecting groove.

7. The low-voltage withdrawable complete low-voltage switchgear according to claim 5, characterized in that: A control groove is provided on the outer side of the fixed drawer, a handle is slidably connected to the inside of the control groove, a traction rope is provided on the outer surface of the control handle, the end of the traction rope away from the control handle is provided on a limit block, a guide roller is rotatably connected to the inside of the connecting groove, and the traction abuts on the outer surface of the guide roller, and the position of the limit block is adapted to the position of the limit hole.

8. The low-voltage withdrawable complete low-voltage switchgear according to claim 1, characterized in that: The bottom surface of the cabinet is provided with supporting legs, the inner bottom wall of the cabinet is provided with an exhaust through hole, and a dust cover is provided inside the exhaust through hole.

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