External explosion-proof cabinet for high-voltage soft starter

Abstract

The utility model relates to the technical field of explosion prevention, and discloses an external explosion-proof cabinet for a high-voltage soft starter, which comprises an explosion-proof cabinet body, an explosion-proof cabinet door is arranged on one side of the explosion-proof cabinet body in a sliding manner, and a locking mechanism for limiting the explosion-proof cabinet door is arranged on one side, adjacent to the explosion-proof cabinet door, of the explosion-proof cabinet body. A heat conduction bottom plate is arranged at the bottom of an inner cavity of the explosion-proof cabinet door, and a semiconductor refrigerator is arranged on the lower surface of the heat conduction bottom plate; through cooperation of the explosion-proof cabinet body, the explosion-proof cabinet door, the locking mechanism, the cooling fan, the flow guide fan, the semiconductor cooler and the cooling fins, the semiconductor cooler is used for cooling the heat conduction bottom plate, so that the bottom of an inner cavity of the explosion-proof cabinet body is cooled through the multiple sets of heat dissipation and heat conduction fins, the semiconductor cooler is cooled through the flow guide fan, the service life of the explosion-proof cabinet body is prolonged, and the service life of the explosion-proof cabinet body is prolonged. And heat at the top of the inner cavity of the explosion-proof cabinet body is discharged under the action of the heat dissipation fan, so that the heat dissipation efficiency of the high-voltage soft starter is improved.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof technology, specifically to an external explosion-proof cabinet for a high-voltage soft starter. Background Technology

[0002] A soft starter is a motor controller that integrates motor soft starting, soft stopping, light-load energy saving and multiple protection functions. Its main components are three anti-parallel thyristors connected in series between the power supply and the controlled motor and its electronic control circuit. High-voltage soft starters of 3kV to 10kV are widely used in many fields such as machinery manufacturing, cement production, metallurgy, mining, chemical industry, and water treatment.

[0003] In the prior art, Chinese Utility Model Application No. CN201921422263.6 discloses an external explosion-proof cabinet for a high-voltage soft starter. This cabinet includes a shell, a locking mechanism, and a driving mechanism. The shell has a partition forming a first cavity and a second cavity. The first cavity has a front door. The partition has several first through holes connecting the first and second cavities. A stationary contact is located at one of the first through holes in the second cavity. An insulating plate is located in the first cavity, and the insulating plate has several second through holes corresponding to the first through holes. The locking mechanism is connected to the front door. When the front door is open, it locks the insulating plate; when the front door is closed, it unlocks the insulating plate. The driving mechanism is connected to the insulating plate. After the insulating plate is unlocked, it drives the insulating plate until the second through holes connect with the first through holes. This utility model has a reasonable structure, is easy to install, has high safety, and strong compatibility.

[0004] While existing explosion-proof cabinets improve compatibility, their heat dissipation performance is insufficient, causing the high-voltage soft starter to be easily damaged due to the inability to dissipate the heat generated during operation. Therefore, we need to propose an external explosion-proof cabinet for high-voltage soft starters. Utility Model Content

[0005] The purpose of this utility model is to provide an external explosion-proof cabinet for high-voltage soft starters, which facilitates the rapid dissipation of heat generated by the high-voltage soft starter during use, thereby improving the service life of the high-voltage soft starter and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof cabinet for a high-voltage soft starter, comprising an explosion-proof cabinet body, an explosion-proof cabinet door slidably disposed on one side of the explosion-proof cabinet body, a locking mechanism for limiting the explosion-proof cabinet door disposed on the side of the explosion-proof cabinet body adjacent to the explosion-proof cabinet door, a heat-conducting base plate disposed at the bottom of the inner cavity of the explosion-proof cabinet door, a semiconductor cooler disposed on the lower surface of the heat-conducting base plate, a heat exchange chamber disposed below the heat-conducting base plate, side holes communicating with the heat exchange chamber being opened on both sides of the explosion-proof cabinet body, dustproof nets disposed in the side holes, a guide fan disposed in one set of the side holes, multiple sets of heat-conducting fins disposed on the upper surface of the heat-conducting base plate, a heat dissipation pipe disposed on the other side of the explosion-proof cabinet body, a heat dissipation fan disposed in the heat dissipation pipe, and a dustproof cover detachably disposed at one end of the heat dissipation pipe.

[0007] Preferably, a support mesh plate is provided above the heat-conducting base plate, a positioning mechanism for limiting the high-voltage soft starter is provided at the top of the inner cavity of the explosion-proof cabinet, and an installation plate for limiting the high-voltage soft starter is fixedly connected to the inner cavity of the explosion-proof cabinet.

[0008] Preferably, the positioning mechanism includes multiple sets of first telescopic rods fixedly connected to the top of the inner cavity of the explosion-proof cabinet, with a pressure plate fixedly connected to the lower end of each set of first telescopic rods, and a first spring sleeved on the outer side of each set of first telescopic rods. Multiple sets of anti-slip strips are adhered to the lower surface of the pressure plate.

[0009] Preferably, heat-conducting side plates are fixedly connected to both sides of the inner cavity of the explosion-proof cabinet, and multiple sets of heat exchange plates are provided on one side of the heat-conducting side plates, with the multiple sets of heat exchange plates arranged at equal intervals.

[0010] Preferably, a retaining strip is fixedly connected to the outer side of the explosion-proof cabinet door, a limiting groove is provided on the inner wall of the explosion-proof cabinet for the retaining strip to slide, and a handle and a retaining plate are fixedly connected to one side of the explosion-proof cabinet door.

[0011] Preferably, the locking mechanism includes a fixed plate fixedly connected to one side of the explosion-proof cabinet, a second telescopic rod fixedly connected to the upper surface of the fixed plate, a second spring sleeved on the outer side of the second telescopic rod, a protective shell slidably connected to the upper end of the second telescopic rod, and a stop block fixedly connected to the upper surface of the protective shell.

[0012] Preferably, the upper end of one side of the stop block is provided with a first rounded corner portion, and the lower end of one side of the card plate is provided with a second rounded corner portion.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model mainly utilizes the cooperation between the explosion-proof cabinet, explosion-proof cabinet door, locking mechanism, cooling fan, airflow fan, semiconductor cooler, and heat dissipation fins. The semiconductor cooler cools the heat-conducting base plate, thereby using multiple sets of heat dissipation fins to cool the bottom of the explosion-proof cabinet's inner cavity. The airflow fan further cools the semiconductor cooler, improving its service life. Under the action of the cooling fan, the heat at the top of the explosion-proof cabinet's inner cavity is dissipated, thus improving the heat dissipation efficiency of the high-voltage soft starter. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the explosion-proof cabinet of this utility model;

[0017] Figure 3 This is a schematic diagram of the explosion-proof cabinet door structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the positioning mechanism structure of this utility model;

[0019] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Explosion-proof cabinet; 2. Explosion-proof cabinet door; 21. Locking strip; 22. Handle; 23. Locking plate; 3. Heat-conducting base plate; 4. Heat exchange chamber; 5. Semiconductor cooler; 6. Heat-conducting fins; 7. Support mesh plate; 8. Heat-conducting side plate; 9. Heat exchange plate; 10. Positioning mechanism; 101. Pressure plate; 102. First telescopic rod; 103. First spring; 104. Anti-slip strip; 11. Mounting plate; 12. Heat dissipation pipe; 13. Cooling fan; 14. Dust cover; 15. Side hole; 16. Dustproof net; 17. Guide fan; 18. Locking mechanism; 181. Fixing plate; 182. Protective shell; 183. Stop block; 184. Second telescopic rod; 185. Second spring; 19. Limiting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This utility model provides a technical solution: an explosion-proof cabinet for a high-voltage soft starter, including an explosion-proof cabinet body 1, an explosion-proof cabinet door 2 slidably disposed on one side of the explosion-proof cabinet body 1, a locking mechanism 18 for limiting the explosion-proof cabinet door 2 disposed on the side adjacent to the explosion-proof cabinet body 1 and the explosion-proof cabinet door 2, a heat-conducting base plate 3 disposed at the bottom of the inner cavity of the explosion-proof cabinet door 2, a semiconductor cooler 5 disposed on the lower surface of the heat-conducting base plate 3, a heat exchange chamber 4 disposed below the heat-conducting base plate 3, side holes 15 communicating with the heat exchange chamber 4 are opened on both sides of the explosion-proof cabinet body 1, a dustproof net 16 is disposed in the side hole 15, a guide fan 17 is disposed in one set of side holes 15, multiple sets of heat-conducting fins 6 are disposed on the upper surface of the heat-conducting base plate 3, a heat dissipation pipe 12 is disposed on the other side of the explosion-proof cabinet body 1, a heat dissipation fan 13 is disposed in the heat dissipation pipe 12, and a dustproof cover 14 is detachably disposed at one end of the heat dissipation pipe 12.

[0023] A support mesh plate 7 is provided above the heat-conducting base plate 3. A positioning mechanism 10 for limiting the high-voltage soft starter is provided at the top of the inner cavity of the explosion-proof cabinet 1. An installation plate 11 for limiting the high-voltage soft starter is fixedly connected to the inner cavity of the explosion-proof cabinet 1. The support mesh plate 7 facilitates the upward flow of cold air at the bottom of the explosion-proof cabinet 1, thereby improving the heat dissipation efficiency of the high-voltage soft starter.

[0024] The positioning mechanism 10 includes multiple sets of first telescopic rods 102 fixedly connected to the top of the inner cavity of the explosion-proof cabinet 1. The lower ends of the multiple sets of first telescopic rods 102 are fixedly connected to pressure plates 101. The outer sides of the multiple sets of first telescopic rods 102 are all fitted with first springs 103. Multiple sets of anti-slip strips 104 are bonded to the lower surface of the pressure plate 101. The multiple sets of anti-slip strips 104 prevent the pressure plate 101 from rigidly pressing the high-voltage soft starter and causing damage, while improving the stability of the positioning of the high-voltage soft starter.

[0025] Both sides of the inner cavity of the explosion-proof cabinet 1 are fixedly connected to heat-conducting side plates 8. Multiple sets of heat exchange plates 9 are provided on one side of the heat-conducting side plates 8. The multiple sets of heat exchange plates 9 are arranged at equal intervals. The heat-conducting side plates 8 are used to accelerate the absorption of heat dissipated by the high-voltage soft starter, and at the same time, the heat dissipation efficiency is improved under the action of air flow.

[0026] A retaining strip 21 is fixedly connected to the outer side of the explosion-proof cabinet door 2. A limiting groove 19 is provided on the inner wall of the explosion-proof cabinet body 1 for the retaining strip 21 to slide. A handle 22 and a retaining plate 23 are fixedly connected to one side of the explosion-proof cabinet door 2. The handle 22 is used to quickly and easily pull out the explosion-proof cabinet door 2, thereby improving the disassembly efficiency of the explosion-proof cabinet door 2.

[0027] The locking mechanism 18 includes a fixed plate 181 fixedly connected to one side of the explosion-proof cabinet 1. A second telescopic rod 184 is fixedly connected to the upper surface of the fixed plate 181. A second spring 185 is sleeved on the outer side of the second telescopic rod 184. A protective shell 182 that slides with the fixed plate 181 is fixedly connected to the upper end of the second telescopic rod 184. A stop block 183 is fixedly connected to the upper surface of the protective shell 182. The position of the stop block 183 can be easily reset by the elastic change of the second spring 185, thereby facilitating the fixing of the card plate 23 on the explosion-proof cabinet door 2 and improving the stability of the explosion-proof cabinet door 2 after closing.

[0028] The upper side of the stop block 183 is provided with a first rounded corner, and the lower side of the card plate 23 is provided with a second rounded corner. The contact between the first rounded corner and the second rounded corner facilitates the quick closing of the explosion-proof cabinet door 2.

[0029] In use, the high-voltage soft starter is installed on the support mesh plate 7, and the first spring 103 on the first telescopic rod 102 presses the pressure plate 101 against the high-voltage soft starter, thereby improving the stability of the high-voltage soft starter installation. Then, the explosion-proof cabinet door 2 is inserted into the limiting groove 19, so that the clamping plate 23 abuts against the stop block 183. After compressing the second spring 185, the clamping plate 23 moves between the explosion-proof cabinet body 1 and the baffle. The second spring 185 drives the protective shell 182 to reset, and then the baffle fixes the clamping plate 23, thereby completing the installation of the explosion-proof cabinet door 2. The fixed position improves the stability of the explosion-proof cabinet door 2 installation. The high-voltage soft starter generates heat during operation, which accumulates in the inner cavity of the explosion-proof cabinet 1. The semiconductor cooler 5 cools the heat-conducting base plate 3, thereby cooling the heat-conducting fins 6 and the bottom of the inner cavity of the explosion-proof cabinet 1. Under the guidance of the cooling fan 13, the cold air at the bottom is guided upwards. At the same time, the heat emitted by the high-voltage soft starter is discharged through the heat dissipation pipe 12 under the action of air flow, thereby improving the heat dissipation efficiency inside the explosion-proof cabinet 1.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof cabinet for a high-voltage soft starter, comprising an explosion-proof cabinet body (1), characterized in that: An explosion-proof cabinet door (2) is slidably provided on one side of the explosion-proof cabinet (1). A locking mechanism (18) for limiting the explosion-proof cabinet door (2) is provided on the side adjacent to the explosion-proof cabinet (1). A heat-conducting base plate (3) is provided at the bottom of the inner cavity of the explosion-proof cabinet door (2). A semiconductor cooler (5) is provided on the lower surface of the heat-conducting base plate (3). A heat exchange chamber (4) is provided below the heat-conducting base plate (3). Both sides of the explosion-proof cabinet (1) are provided with... A side hole (15) is connected to the heat exchange chamber (4). A dustproof net (16) is installed in the side hole (15). A flow guide fan (17) is installed in one set of the side holes (15). Multiple sets of heat-conducting fins (6) are installed on the upper surface of the heat-conducting base plate (3). A heat dissipation pipe (12) is installed on the other side of the explosion-proof cabinet (1). A heat dissipation fan (13) is installed in the heat dissipation pipe (12). A dustproof cover (14) is detachably installed at one end of the heat dissipation pipe (12).

2. The explosion-proof cabinet for a high-voltage soft starter according to claim 1, characterized in that: A support mesh plate (7) is provided above the heat-conducting base plate (3), and a positioning mechanism (10) for limiting the high-voltage soft starter is provided at the top of the inner cavity of the explosion-proof cabinet (1). An installation plate (11) for limiting the high-voltage soft starter is fixedly connected to the inner cavity of the explosion-proof cabinet (1).

3. The explosion-proof cabinet for a high-voltage soft starter according to claim 2, characterized in that: The positioning mechanism (10) includes multiple sets of first telescopic rods (102) fixedly connected to the top of the inner cavity of the explosion-proof cabinet (1). The lower ends of the multiple sets of first telescopic rods (102) are fixedly connected to pressure plates (101). The outer sides of the multiple sets of first telescopic rods (102) are all fitted with first springs (103). The lower surface of the pressure plate (101) is bonded with multiple sets of anti-slip strips (104).

4. The explosion-proof cabinet for a high-voltage soft starter according to claim 3, characterized in that: Both sides of the inner cavity of the explosion-proof cabinet (1) are fixedly connected to heat-conducting side plates (8). Multiple sets of heat exchange plates (9) are provided on one side of the heat-conducting side plates (8), and the multiple sets of heat exchange plates (9) are arranged at equal intervals.

5. The explosion-proof cabinet for a high-voltage soft starter according to claim 4, characterized in that: The explosion-proof cabinet door (2) is fixedly connected to a locking strip (21) on the outside. The explosion-proof cabinet body (1) has a limiting groove (19) for the locking strip (21) to slide on the inner wall. A handle (22) and a locking plate (23) are fixedly connected to one side of the explosion-proof cabinet door (2).

6. The explosion-proof cabinet for a high-voltage soft starter according to claim 5, characterized in that: The locking mechanism (18) includes a fixing plate (181) fixedly connected to one side of the explosion-proof cabinet (1). A second telescopic rod (184) is fixedly connected to the upper surface of the fixing plate (181). A second spring (185) is sleeved on the outer side of the second telescopic rod (184). A protective shell (182) that slides with the fixing plate (181) is fixedly connected to the upper end of the second telescopic rod (184). A stop block (183) is fixedly connected to the upper surface of the protective shell (182).

7. The explosion-proof cabinet for a high-voltage soft starter according to claim 6, characterized in that: The upper side of the stop block (183) is provided with a first rounded corner, and the lower side of the card plate (23) is provided with a second rounded corner.

Images