Self-protection device for inspection and maintenance of explosion-proof integrated control box
By designing a self-protection device in the explosion-proof integrated control box, the locking and automatic power supply and power outage of the sealing door are achieved by using the cooperation of locking components and control components, the explosion risk caused by gas inlet and electric spark contact during maintenance is solved, and safety is ensured.
Patent Information
- Application Number
- CN202421286552.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-06
AI Technical Summary
During the maintenance of the explosion-proof comprehensive control box, combustible and explosive gases or dust from the outside easily enter the control box, and the electric sparks generated during the operation of the relay may cause explosions and cause major accidents.
A self-protection device is designed, including a locking assembly and a control assembly. The locking component realizes the locking of the sealing door through the coordination of the movable shaft, the retaining ring, the handle, the locking block and the clamping block; the control component realizes the automatic power on when the sealing door is closed and the automatic power off when the sealing door is opened.
It effectively prevents external gas from entering the control box during maintenance, and avoids contact between electric sparks and gas during the relay operation, avoiding explosion accidents.
Smart Images
Figure CN222916310U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of explosion-proof boxes, in particular to a self-protection device for inspection, repair and maintenance of an explosion-proof integrated control box. Background Art
[0002] The explosion-proof integrated control box is applicable to flammable and explosive occasions and has functions such as high safety factor, strong operation function and stable performance.
[0003] A plurality of relays for controlling electronic devices are installed inside the control box. However, when it is necessary to repair the relays inside the control box, during the process of opening the door, external flammable and explosive gases or dust are likely to enter the inside of the control box, and electric sparks will be generated during the operation of the relays. Once the electric sparks come into contact with the explosive gases, a violent explosion will occur, causing major accidents. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and to propose a self-protection device for inspection, repair and maintenance of an explosion-proof integrated control box.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A self-protection device for inspection, repair and maintenance of an explosion-proof integrated control box, including a box body, a sealing door is movably installed on the outer wall of the box body, a hinge is connected between the box body and the sealing door, a locking component is installed at one end of the box body and the sealing door away from the hinge, and a control component is installed at one end of the box body and the sealing door close to the hinge;
[0006] The locking component includes a movable shaft, a retaining ring, a handle, a lock block and a clamping block. The movable shaft is movably installed at one end of the sealing door away from the hinge. There are two retaining rings fixedly connected to both ends of the movable shaft. The handle is fixedly connected to the outer wall of the movable shaft. The lock block is fixedly connected to the end of the movable shaft away from the handle. A clamping block corresponding to the lock block is fixedly connected to the inner wall of the box body, and the clamping block is located in front of the lock block;
[0007] The control component includes a push plate, a mounting block, a copper plate, a spring, a copper rod, a copper column, a push block, a live wire, a copper ring and a connecting wire. The push plate is fixedly connected to the rear end of the sealing door. A mounting block is fixedly connected to one end of the inner wall of the box body close to the push plate. The copper plate is installed inside the mounting block. The spring is movably installed inside the mounting block. The copper rod is slidably installed inside the mounting block and is located inside the spring. The copper column is fixedly connected to the outer wall of the copper rod and is located in front of the spring. The push block is fixedly connected to the end of the copper column away from the copper rod. The live wire is installed inside the mounting block and is located on the outer wall of the copper plate. The copper ring is fixedly installed inside the mounting block and is located on the outer wall of the copper column. The connecting wire is fixedly connected to the outer wall of the copper ring.
[0008] Further: The locking assembly further includes a movable hole. A movable hole is provided at one end of the sealing door away from the hinge, and the movable shaft 6 is movably installed inside the movable hole 5.
[0009] Further: The mounting block and the push block are made of insulating materials, and the outer diameter of the copper column is the same as the inner diameter of the copper ring.
[0010] Further: A connection block is installed at one end of the connection line away from the copper ring, and a zero wire is installed at one end of the connection block.
[0011] Further: Two wire holes are provided inside the box body. Insulating sleeves are installed inside the wire holes, and the live wire and the zero wire are both installed through the insulating sleeves in sequence.
[0012] Further: Glass is embedded inside the sealing door.
[0013] The utility model has the following beneficial effects:
[0014] 1. Compared with the prior art, by providing the box body, the push plate, the mounting block, the copper plate, the spring, the copper rod, the copper column, the push block, the live wire, the copper ring, the connection line and the zero wire, when the sealing door is closed, the push plate pushes the push block into the mounting block, and at the same time drives the copper column and the copper rod to move inward together, so that the copper rod contacts the end of the copper plate away from the live wire, and the outer wall of the copper column fits with the inner wall of the copper ring. At this time, the current in the live wire sequentially passes through the copper plate, the copper rod, the copper column and the copper ring and enters the connection line, and powers the relay inside the box body through cooperation with the zero wire; when the sealing door is opened, the push plate also moves at the same time. At this time, the push block has no inward thrust and is pushed outwards by the spring, so that the copper rod leaves the copper plate and the copper column leaves the copper ring, and the current will be interrupted. It can realize automatic power-off when the sealing door is opened and automatic power-on when the sealing door is closed, preventing major accidents caused by explosion during maintenance.
[0015] 2. Compared with the prior art, by providing the movable shaft, the retaining ring, the handle, the lock block and the clamping block, when the sealing door is closed, after closing the sealing door and rotating it clockwise by °, the lock block is stuck at the rear end of the clamping block through the movable shaft, and the sealing door can be locked. At the same time, due to the gravity of the handle itself, the position of the lock block can be driven to always be at the rear end of the clamping block, so that when the sealing door is closed, the sealing door can be locked to prevent it from being accidentally opened and the current from being interrupted, resulting in the equipment stopping working. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the first perspective of the utility model;
[0017] Figure 2 is a schematic structural diagram of the second perspective of the utility model;
[0018] Figure 3Schematic structural diagram when the sealing door of the present utility model is opened;
[0019] Figure 4 Exploded structural diagram of the locking assembly of the present utility model;
[0020] Figure 5 Cross-sectional structural diagram of the control assembly of the present utility model;
[0021] Figure 6 Schematic structural diagram of the circuit principle of the present utility model.
[0022] Legend description:
[0023] 1. Box body; 2. Sealing door; 3. Hinge; 4. Glass; 5. Moving hole; 6. Moving shaft; 7. Retaining ring; 8. Handle; 9. Lock block; 10. Block; 11. Push plate; 12. Mounting block; 13. Copper plate; 14. Spring; 15. Copper rod; 16. Copper column; 17. Push block; 18. Live wire; 19. Copper ring; 20. Connecting wire; 21. Connecting block; 22. Neutral wire; 23. Insulating sleeve. Specific implementation manner
[0024] Refer to Figure 1-6, a self - protection device for inspection, repair and maintenance of an explosion - proof integrated control box provided by the utility model: It includes a box body 1, a sealing door 2 is movably installed on the outer wall of the box body 1, a hinge 3 is connected between the box body 1 and the sealing door 2, a locking component is installed at one end of the box body 1 and the sealing door 2 away from the hinge 3, and a control component is installed at one end of the box body 1 and the sealing door 2 close to the hinge 3; The locking component includes a movable shaft 6, a retaining ring 7, a handle 8, a lock block 9 and a clamping block 10. The movable shaft 6 is movably installed at one end of the sealing door 2 away from the hinge 3. There are two retaining rings 7 fixedly connected to both ends of the movable shaft 6. The handle 8 is fixedly connected to the outer wall of the movable shaft 6. The lock block 9 is fixedly connected to one end of the movable shaft 6 away from the handle 8. A clamping block 10 corresponding to the lock block 9 is fixedly connected to the inner wall of the box body 1. The clamping block 10 is located in front of the lock block 9; The control component includes a push plate 11, a mounting block 12, a copper plate 13, a spring 14, a copper rod 15, a copper column 16, a push block 17, a live wire 18, a copper ring 19 and a connecting wire 20. The rear end of the sealing door 2 is fixedly connected with a push plate 11. A mounting block 12 is fixedly connected to one end of the inner wall of the box body 1 close to the push plate 11. The copper plate 13 is installed inside the mounting block 12. The spring 14 is movably installed inside the mounting block 12. The copper rod 15 is slidably installed inside the mounting block 12 and is located inside the spring 14. The copper column 16 is fixedly connected to the outer wall of the copper rod 15 and is located in front of the spring 14. The push block 17 is fixedly connected to one end of the copper column 16 away from the copper rod 15. The live wire 18 is installed inside the mounting block 12 and is located on the outer wall of the copper plate 13. The copper ring 19 is fixedly installed inside the mounting block 12 and is located on the outer wall of the copper column 16. The connecting wire 20 is fixedly connected to the outer wall of the copper ring 19. When in use, when closing the sealing door 2, after closing the sealing door 2, rotate it clockwise by 90°. Through the movable shaft 6, the lock block 9 is stuck at the rear end of the clamping block 10, and the sealing door 2 can be locked. At the same time, due to the gravity of the handle 8 itself, the position of the lock block 9 can be driven to always be at the rear end of the clamping block 10; When the movable shaft 6 rotates inside the movable hole 5, the front - rear position of the movable shaft 6 can be restricted by the retaining rings 7 at both ends of the movable shaft 6. When opening the sealing door 2, the push plate 11 also moves at the same time. At this time, the push block 17 has no inward thrust, so it is pushed outwards by the spring 14, causing the copper rod 15 to leave the copper plate 13 and the copper column 16 to leave the copper ring 19, and the current will be interrupted.
[0025] The locking component further includes a movable hole 5. A movable hole 5 is opened at one end of the sealing door 2 away from the hinge 3. The movable shaft 6 is movably installed inside the movable hole 5. The movable hole 5 is used for installing the movable shaft 6, facilitating the staff to rotate the handle 8 and the lock block 9 to realize the opening and closing of the sealing door 2.
[0026] The materials of the mounting block 12 and the push block 17 are insulating materials, which can prevent electric shock caused by current leakage. The outer diameter of the copper column 16 is the same as the inner diameter of the copper ring 19, which is convenient for the copper column 16 to slide smoothly inside the copper ring 19.
[0027] One end of the connecting wire 20 away from the copper ring 19 is installed with a connecting block 21, and one end of the connecting block 21 is installed with a neutral wire 22. During use, through the connection between the neutral wire 22 and the connecting block 21, and in cooperation with the connection of the live wire 18, the relay inside the box body 1 can work normally.
[0028] Two wire holes are opened inside the box body 1, and insulating sleeves 23 are installed inside the wire holes. The live wire 18 and the neutral wire 22 are both installed in sequence through the insulating sleeves 23. During use, through the insulating sleeves 23, the current generated by the live wire 18 and the neutral wire 22 can be isolated from the outside.
[0029] A glass 4 is embedded inside the sealing door 2. When the sealing door 2 is closed, the staff can observe the relay inside the box body 1 through the glass 4.
[0030] Working principle: When the sealing door 2 is closed, the push block 17 is pushed into the inside of the mounting block 12 through the push plate 11, and at the same time, the copper column 16 and the copper rod 15 are driven to move inward at the same time, so that the copper rod 15 contacts one end of the copper plate 13 away from the live wire 18, and the outer wall of the copper column 16 fits with the inner wall of the copper ring 19. At this time, the current in the live wire 18 passes through the copper plate 13, the copper rod 15, the copper column 16 and the copper ring 19 in sequence and enters the connecting wire 20, and supplies power to the relay inside the box body 1 through cooperation with the neutral wire 22; when it is necessary to repair and check the relay inside the box body 1, the sealing door 2 is opened, and the push plate 11 moves at the same time. At this time, the push block 17 has no inward thrust and is pushed outwards by the spring 14, so that the copper rod 15 leaves the copper plate 13 and the copper column 16 leaves the copper ring 19, and the current will be interrupted.
[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A self-protection device for inspection and maintenance of an explosion-proof integrated control box, comprising a box body (1), characterized in that: A sealed door (2) is movably mounted on the outer wall of the box body (1); a hinge (3) is connected between the box body (1) and the sealed door (2); a locking component is mounted at one end between the box body (1) and the sealed door (2) and away from the hinge (3); and a control component is mounted at one end between the box body (1) and the sealed door (2) and close to the hinge (3); The locking assembly comprises a movable shaft (6), a retaining ring (7), a handle (8), a locking block (9) and a clamping block (10); the movable shaft (6) is movably mounted on an end of the sealed door (2) away from the hinge (3); the retaining ring (7) has two ends fixedly connected to the movable shaft (6); the handle (8) is fixedly connected to the outer wall of the movable shaft (6); the locking block (9) is fixedly connected to an end of the movable shaft (6) away from the handle (8); the inner wall of the box body (1) is fixedly connected with a clamping block (10) corresponding to the locking block (9); and the clamping block (10) is located at the front end of the locking block (9); The control assembly comprises a push plate (11), a mounting block (12), a copper plate (13), a spring (14), a copper rod (15), a copper column (16), a push block (17), a live wire (18), a copper ring (19) and a connecting wire (20); the rear end of the sealed door (2) is fixedly connected to the push plate (11); the inner wall of the box body (1) and one end close to the push plate (11) is fixedly connected to the mounting block (12); the copper plate (13) is installed inside the mounting block (12); the spring (14) is movably installed inside the mounting block (12); the copper rod (15) is fixedly connected to the inner wall of the box body (1) and one end close to the push plate (11) is fixedly connected to the mounting block (12); the copper plate (13) is installed inside the mounting block (12); the spring (14) is movably installed inside the mounting block (12); the copper rod (15) is fixedly connected to the inner wall of the box body (1) and the copper plate (13) is fixedly connected to the inner wall of the box body (1). 5) is slidably mounted inside the mounting block (12) and located inside the spring (14); the copper column (16) is fixedly connected to the outer wall of the copper rod (15) and located at the front end of the spring (14); the push block (17) is fixedly connected to the end of the copper column (16) away from the copper rod (15); the live wire (18) is mounted inside the mounting block (12) and located on the outer wall of the copper plate (13); the copper ring (19) is fixedly mounted inside the mounting block (12) and located on the outer wall of the copper column (16); and the connecting wire (20) is fixedly connected to the outer wall of the copper ring (19).
2. The self-protection device for inspection and maintenance of an explosion-proof integrated control box according to claim 1 is characterized in that: The locking assembly comprises a movable hole (5), an end of the sealed door (2) away from the hinge (3) is provided with the movable hole (5), and the movable shaft (6) is movably mounted inside the movable hole (5).
3. The self-protection device for inspection and maintenance of an explosion-proof integrated control box according to claim 1 is characterized in that: The material of the mounting block (12) and the pushing block (17) is insulating material, and the outer diameter of the copper column (16) is the same as the inner diameter of the copper ring (19).
4. The self-protection device for inspection and maintenance of an explosion-proof integrated control box according to claim 1 is characterized in that: A connection block (21) is installed at one end of the connection line (20) away from the copper ring (19), and a neutral line (22) is installed at one end of the connection block (21).
5. The self-protection device for inspection and maintenance of an explosion-proof integrated control box according to claim 1 is characterized in that: Two wire holes are provided inside the box (1), and an insulating sleeve (23) is installed inside the wire hole. The live wire (18) and the neutral wire (22) are installed in sequence and pass through the insulating sleeve (23).
6. The self-protection device for inspection and maintenance of an explosion-proof integrated control box according to claim 1 is characterized in that: Glass (4) is embedded inside the sealed door (2).