Hole plugging device for power plant

Abstract

The invention discloses a hole plugging device for a power plant, and belongs to the technical field of plugging devices, the hole plugging device comprises an outer support and a door body, an outer ring of the outer support is matched with a through hole of a wall body, the through hole comprises an inclined outer hole, the outer support comprises an inclined outer surface matched with the inclined outer hole, and the inclined outer hole is gradually reduced from outside to inside of the through hole; an outer sealing ring is arranged between the inclined outer face and the inclined outer hole, the door body is matched with an inner ring of the outer support, an inner sealing ring is arranged between the door body and the inner ring of the outer support, and the door body is detachably connected. By arranging the outer support, the outer sealing ring, the inclined outer face and the inclined outer hole, the sealing performance of connection between the outer support and the hole can be guaranteed, and smog or fire is prevented from being transmitted through the hole under the adverse conditions such as fire disasters; the door body and the inner sealing ring are arranged, and the connecting screw rod is in threaded connection with the supporting block, so that the sealing performance is guaranteed; and through the arrangement of the wire hole sealing ring, the upper U-shaped pressing plate and the pressing plate spring, the cable is pressed tightly through the upper U-shaped pressing plate and the pressing plate spring after passing through, and the sealing performance is kept.

Description

Technical Field

[0001] The invention relates to the technical field of plugging devices, and in particular to a hole plugging device used in a power plant. Background Art

[0002] The hole plugging of power plants is an important maintenance work to ensure the safety and efficiency of power plants. In the prior art, the hole plugging devices of general power plants are directly used to plug the holes in cooperation with the holes. However, direct plugging has poor sealing performance because the side walls of the holes cannot be completely even and flat, and there will be slightly raised parts and slightly sunken areas. Smoke can still be transmitted from one side of the plugging device to the other side and cause a larger fire. Alternatively, the plugging device and the hole are directly plugged and sealed by materials such as concrete or glue. However, the use of concrete or glue will lead to greater construction difficulty and higher construction requirements. Once the concrete or glue is dry, the plugging device can no longer be disassembled or opened, which cannot meet the use requirements of some scenarios. In addition, the existing plugging device also has a hole for wires and cables to pass through. The sealing performance of the hole is poor, and smoke can pass through the hole to the other side, or the hole is plugged by materials such as glue, resulting in the wires and cables being bonded to the hole. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a hole plugging device for a power plant to solve the problem raised in the background technology, which can improve the overall sealing performance of the plugging device and prevent smoke or fire from being transmitted from one side to the other.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A hole plugging device for a power plant comprises an outer bracket and a door body, wherein the outer ring of the outer bracket cooperates with a through hole in a wall, the through hole comprises an inclined outer hole, the outer bracket comprises an inclined outer surface cooperating with the inclined outer hole, the inclined outer hole gradually becomes smaller from the outside to the inside of the through hole, an outer sealing ring is provided between the inclined outer surface and the inclined outer hole, the door body cooperates with the inner ring of the outer bracket, an inner sealing ring is provided between the door body and the inner ring of the outer bracket, and the door body is detachably connected.

[0006] Preferably, a wire hole is provided on the door body, a wire hole sealing ring is sleeved in the wire hole, a lower U-shaped pressure plate is provided on the outer side of the door body, the inner wall of the lower U-shaped pressure plate is in contact with the outer wall of the wire hole sealing ring, an upper U-shaped pressure plate is provided above the lower U-shaped pressure plate, the upper U-shaped pressure plate is connected to a pressure plate spring, the pressure plate spring is connected to a pressure plate stopper at one end away from the upper U-shaped pressure plate, and the pressure plate stopper is provided on the door body.

[0007] Preferably, the outer bracket also includes a support block arranged in the inner circle, the support block is connected to the inner circle of the outer bracket through a number of connecting rods, a movable connecting block is provided on the side of the support block away from the door body, the movable connecting block is rotatably connected to the screw through the movable block, a support baffle is provided on the side of the wall away from the door body, a threaded hole cooperating with the screw is provided on the support baffle, and a rotating handle is provided on the end of the screw away from the support block.

[0008] Preferably, a plurality of tension springs are provided between the outer bracket and the supporting baffle, and after the outer bracket is installed, any one of the tension springs is in a tensioned state.

[0009] Preferably, a connecting screw is provided on a side of the door body away from the pressure plate spring, and a threaded hole matching with the connecting screw is provided on the support block.

[0010] Preferably, a fastening handle is provided on the outer side of the door body.

[0011] Preferably, the outer sealing ring is detachably connected to the wall, and the wall is provided with a circle of mounting grooves that cooperate with the outer sealing ring.

[0012] Preferably, the outer sealing ring, the inner sealing ring and the wire hole sealing ring are all made of silicone rubber material, and the silicone rubber material includes fireproof filler.

[0013] The above technical solution has the following beneficial effects:

[0014] By providing an external bracket, an external sealing ring, and providing an oblique outer surface and an oblique outer hole, the sealing of the connection between the external bracket and the hole can be ensured, so as to avoid the occurrence of a fire or other unfavorable situation in which smoke or fire is transmitted through the hole and causes a larger fire;

[0015] The sealing performance can be ensured by arranging the door body and the inner sealing ring, and by threading the connecting screw and the supporting block;

[0016] By setting a wire hole sealing ring, an upper U-shaped pressure plate and a pressure plate spring, the cable is pressed by the upper U-shaped pressure plate and the pressure plate spring after passing through to maintain sealing;

[0017] The outer sealing ring, the inner sealing ring and the wire hole sealing ring are all made of silicone rubber material. The silicone rubber material includes fireproof filler and can play a flame retardant role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a hole plugging device used in a power plant according to the present invention;

[0019] Figure 2 Another three-dimensional structural schematic diagram of a hole plugging device for a power plant according to the present invention;

[0020] Figure 3 It is a schematic diagram of the main structure of a hole plugging device used in a power plant according to the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA line;

[0022] Figure 5 for Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 6 It is a left-side structural schematic diagram of a hole plugging device for a power plant according to the present invention;

[0024] Figure 7 The figure is a schematic diagram of the rear view structure of a hole plugging device used in a power plant according to the present invention. DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] refer to Figure 1 to Figure 7 The hole plugging device includes an outer bracket 2 and a door body 3. The outer ring of the outer bracket 2 cooperates with the through hole 22 of the wall 1. The through hole 22 includes an oblique outer hole 23. The outer bracket 2 includes an oblique outer surface 24 that cooperates with the oblique outer hole 23. The oblique outer hole 23 gradually becomes smaller from the outside to the inside of the through hole 22. An outer sealing ring 18 is provided between the oblique outer surface 24 and the oblique outer hole 23. The door body 3 cooperates with the inner ring of the outer bracket 2. An inner sealing ring 19 is provided between the door body 3 and the inner ring of the outer bracket 2. The door body 3 is detachably connected;

[0027] The outer bracket 2 cooperates with the through hole 22, and the through hole 22 includes an oblique outer hole 23 and a flat through hole. The cooperation between the outer bracket 2 and the through hole 22 is specifically the cooperation with the oblique outer hole 23. The sealing performance is maintained by setting an outer sealing ring 18. A mounting groove is set at the intersection of the oblique outer hole 23 and the flat through hole for installing the outer sealing ring 18. The outer sealing ring 18 includes an area that cooperates with the mounting groove and a part that cooperates with the oblique outer hole 23. One side of the part is in contact with the oblique outer hole 23, and the other side is in contact with the oblique outer surface 24. The size of the part can be completely covered with the oblique outer surface 24, or it can be covered with a part of the oblique outer surface 24 area to ensure tightness. In order to ensure the sealing performance, a screw 7 is provided to tighten the outer bracket 2, and the tightening direction is the direction in which the oblique outer hole 23 gradually shrinks, so that the outer bracket 2 is subjected to tension to press the outer sealing ring 18, so that the oblique outer surface 24 is closely fitted to the outer sealing ring 18, and in the process of close fitting after the force is applied, the oblique outer hole 23 is also closely fitted to the outer sealing ring 18, thereby ensuring the tightness of the outer bracket 2 and the oblique outer hole 23, and at the same time, in the process of applying force, a force is also applied to the part of the outer sealing ring 18 in the groove, so that the part is closely fitted in the groove, thereby ensuring the sealing of the entire connection;

[0028] After the outer bracket 2 is installed, the outer bracket 2 is pulled by rotating the screw rod 7, and the screw rod 7 is rotated by using the rotating handle 8. When the screw rod 7 passes through the supporting baffle 4, it is connected with the threaded hole on it. The outer bracket 2 can be tightened during the rotation process. However, this method cannot guarantee that it can still fit tightly after a period of use. In order to make it fit tightly for a long time, a plurality of tension springs 9 are provided. After the outer bracket 2 is installed and adjusted in place, the tension is maintained by the elastic force of the tension spring 9. At this time, the tension spring is in a stretched state, giving force to the outer bracket 2. The specific tension spring 9 can be detachably connected. The specific number of the tension springs 9 is two or four. For example, the two tension springs 9 can be arranged in the left and right directions or in the up and down directions, and can be symmetrically arranged about the screw rod 7. Four can also be arranged, and the four are arranged 90 degrees apart from each other. On the one hand, it is easy to install, and on the other hand, the overall force of the outer bracket 2 is kept balanced to avoid excessive force on one side relative to the other side, thereby causing the outer bracket 2 to tilt.

[0029] In the prior art, hole plugging devices are mostly directly matched with holes. However, the shape of the hole inside is irregular, and the direct matching mode will result in low sealing after plugging. In some fields, such as underground rail transit, there are certain requirements for sealing. The technical solution in the present application has good sealing performance after plugging, and can isolate smoke. If a fire occurs on one side after isolation, the other side can avoid the spread of fire and prevent smoke from passing through the plugging device. The door body 3 is also easier to open, and the installation of the entire device is easier and more labor-saving.

[0030] The door body 3 is provided with a wire hole 21, in which a wire hole sealing ring 13 is sleeved, a lower U-shaped pressing plate 14 is provided on the outer side of the door body 3, the inner side wall of the lower U-shaped pressing plate 4 is in contact with the outer side wall of the wire hole sealing ring 13, an upper U-shaped pressing plate 15 is provided above the lower U-shaped pressing plate 4, the upper U-shaped pressing plate 15 is connected to a pressing plate spring 16, and the pressing plate spring 16 is connected to a pressing plate stopper 17 at one end away from the upper U-shaped pressing plate 15, and the pressing plate stopper 17 is provided on the door body 3;

[0031] The wire hole 21 is used to allow wires and cables to pass through. When passing through, the wires can pass through the wire hole sealing ring 13. After the wires or cables are installed, the wire hole sealing ring 13 is placed on the lower U-row pressing plate 4. The lower U-row pressing plate 4 plays a supporting role. When installing the wires, the pressing plate spring 16 can be manually compressed to allow the wires or cables to pass through. After reaching the position, the pressing plate spring 16 is released to allow the upper U-shaped pressing plate 15 to press the wire hole sealing ring 13 under the elastic force of the spring to keep it tight. By supporting the wire hole sealing ring 13 and then cooperating with the upper U-shaped pressing plate 15, the wire hole sealing ring 13 is pressed to ensure the sealing performance;

[0032] The outer bracket 2 also includes a support block 5 arranged in the inner ring, and the support block 5 is connected to the inner ring of the outer bracket 2 through a plurality of connecting rods 20. The connecting rods 20 can be two and are symmetrically arranged about the support block 5. A movable connecting block 6 is provided on the side of the support block 5 away from the door body 3. The movable connecting block 6 is rotatably connected to the screw 7 through a movable block 10. The movable block 10 is placed inside the movable connecting block 6 so that the movable block 10 can be rotated and moved, but will not be separated from the movable connecting block 6. A support baffle 4 is provided on the side of the wall 1 away from the door body 3. The support baffle 4 can be connected to the wall 1 through expansion bolts. The support baffle 4 is provided with a threaded hole that cooperates with the screw 7. A rotating handle 8 is provided at the end of the screw 7 away from the support block 5. The handle 8 is rotated by action to rotate the screw 7. The screw 7 rotates, which can drive the outer bracket 2 to move, so that the outer bracket 2 can press the outer sealing ring 18;

[0033] A plurality of tension springs 9 are arranged between the outer bracket 2 and the support baffle 4. After the outer bracket 2 is installed, any tension spring 9 is in a tensioned state. The spring in the tensioned state will give force to the outer bracket 2, so that the outer bracket 2 is always in a tensioned state, ensuring that it is tightly fitted with the outer sealing ring 18, and can maintain this fitting state for a long time, thereby ensuring sealing for a long time;

[0034] A connecting screw 11 is provided on one side of the door body 3 away from the pressure plate spring 16, and a threaded hole matching the connecting screw 11 is provided on the support block 5. The connecting screw 11 is used to connect and install the door body 3. When installing the door body 3, the door body 3 can be rotated to connect the connecting screw 11 with the support block 5. As the door body 3 is installed tightly with continued rotation, the side wall of the door body 3 is also an inclined surface with a larger outside and a smaller inside. After tightening, the inner sealing ring 19 will be compressed. The inner sealing ring 19 can be made of silicone rubber material and has a certain elasticity. At this time, the compressed inner sealing ring 19 can not only maintain the sealing performance, but also prevent loosening to a certain extent, so that the door body 3 can maintain a close fit for a long time, and the inner sealing ring can completely cover the inner ring of the outer bracket 2;

[0035] A fastening handle 12 is provided on the outer side of the door body 3. Two fastening handles 12 can be provided. The two fastening handles 12 provided can be symmetrically arranged about the wire hole 21, so that the door body 3 can be rotated by grasping the two fastening handles 12 to install or remove the door body 3. The door body 3 can be a disc-shaped door, and the two fastening handles 12 are symmetrical about the axis of the disc-shaped door body 3.

[0036] The outer sealing ring 18 is detachably connected to the wall 1. A circle of mounting grooves matching the outer sealing ring 18 is provided on the wall 1. The mounting groove is used to install the outer sealing ring 18. When in use, the outer sealing ring 18 is first inserted into the mounting groove. After the installation is completed, the outer bracket 2 is installed to improve the efficiency of the installation and ensure that the outer sealing ring 18 fully plays a sealing role.

[0037] The outer sealing ring 18, the inner sealing ring 19, and the wire hole sealing ring 13 are all made of silicone rubber material, and the silicone rubber material includes a fireproof filler. By adding the fireproof filler, the outer sealing ring 18, the inner sealing ring 19, and the wire hole sealing ring 13 are all fireproof and have a certain elasticity. While ensuring the sealing performance, they can also prevent fire, prevent the fire on one side of the wall 1 from burning to the other side, and prevent the smoke on one side of the wall 1 from passing through the sealing device to the other side;

[0038] By providing the outer bracket 2, the outer sealing ring 18, the oblique outer surface 24, and the oblique outer hole 23, the sealing property of the connection between the outer bracket 2 and the hole can be ensured, and smoke or fire can be prevented from being transmitted through the hole sealing device in adverse circumstances such as fire.

[0039] By providing the door body 3 and the inner sealing ring 19, and by threading the connecting screw 11 with the support block 5, the sealing can be ensured;

[0040] By providing the wire hole sealing ring 13, the upper U-shaped pressure plate 15 and the pressure plate spring 16, the cable is pressed by the upper U-shaped pressure plate 15 and the pressure plate spring 16 after passing through to maintain the sealing performance;

[0041] The outer sealing ring 18, the inner sealing ring 19 and the wire hole sealing ring 13 are all made of silicone rubber material. The silicone rubber material includes a fireproof filler and can play a flame retardant role.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A hole plugging device for a power plant, characterized in that: It comprises an outer bracket (2) and a door body (3), wherein the outer ring of the outer bracket (2) cooperates with a through hole (22) of a wall body (1), the through hole (22) comprises an inclined outer hole (23), the outer bracket (2) comprises an inclined outer surface (24) cooperating with the inclined outer hole (23), the inclined outer hole (23) gradually becomes smaller from the outside to the inside of the through hole (22), an outer sealing ring (18) is provided between the inclined outer surface (24) and the inclined outer hole (23), the door body (3) cooperates with the inner ring of the outer bracket (2), an inner sealing ring (19) is provided between the door body (3) and the inner ring of the outer bracket (2), and the door body (3) is detachably connected.

2. A hole plugging device for a power plant according to claim 1, characterized in that: The door body (3) is provided with a wire hole (21), a wire hole sealing ring (13) is sleeved in the wire hole (21), a lower U-shaped pressure plate (14) is provided on the outer side of the door body (3), the inner side wall of the lower U-shaped pressure plate (4) is in contact with the outer side wall of the wire hole sealing ring (13), an upper U-shaped pressure plate (15) is provided above the lower U-shaped pressure plate (4), the upper U-shaped pressure plate (15) is connected to a pressure plate spring (16), and the pressure plate spring (16) is connected to a pressure plate stopper (17) at one end away from the upper U-shaped pressure plate (15), and the pressure plate stopper (17) is provided on the door body (3).

3. A hole plugging device for a power plant according to claim 1, characterized in that: The outer bracket (2) also includes a support block (5) arranged in the inner ring, the support block (5) is connected to the inner ring of the outer bracket (2) through a plurality of connecting rods (20), a movable connecting block (6) is provided on the side of the support block (5) away from the door body (3), the movable connecting block (6) is rotatably connected to the screw rod (7) through a movable block (10), a support baffle (4) is provided on the side of the wall (1) away from the door body (3), a threaded hole is provided on the support baffle (4) that cooperates with the screw rod (7), and a rotating handle (8) is provided on the end of the screw rod (7) away from the support block (5).

4. A hole plugging device for a power plant according to claim 3, characterized in that: A plurality of tension springs (9) are provided between the outer bracket (2) and the supporting baffle (4); after the outer bracket (2) is installed, any one of the tension springs (9) is in a tensioned state.

5. The hole plugging device for a power plant according to claim 3, characterized in that: A connecting screw (11) is provided on the side of the door body (3) away from the pressure plate spring (16), and a threaded hole matching the connecting screw (11) is provided on the support block (5).

6. A hole plugging device for a power plant according to claim 1, characterized in that: A fastening handle (12) is provided on the outer side of the door body (3).

7. A hole plugging device for a power plant according to claim 1, characterized in that: The outer sealing ring (18) is detachably connected to the wall (1), and the wall (1) is provided with a circle of mounting grooves that cooperate with the outer sealing ring (18).

8. The hole plugging device for a power plant according to claim 1, characterized in that: The outer sealing ring (18), the inner sealing ring (19) and the wire hole sealing ring (13) are all made of silicone rubber material, and the silicone rubber material includes fireproof filler.

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