Anti-explosion device for cable hole of anti-explosion wall

Abstract

The utility model discloses an anti-explosion device for an anti-explosion wall cable hole, and belongs to the technical field of anti-explosion wall hole treatment. Comprising a device outer envelope structure, the device outer envelope structure is arranged towards an end face opening of the anti-explosion wall, and the device outer envelope structure is composed of internal reinforcing steel bars and an attachment face outside the reinforcing steel bars. The anti-explosion device can effectively solve the problem that the anti-explosion capacity of an anti-explosion wall is weakened by a cable inlet hole, and shock waves released by an explosion point are absorbed by the anti-explosion device and cannot enter a non-explosion area from the cable inlet to damage personnel and equipment in the non-explosion area.

Description

Technical Field

[0001] This application belongs to the field of blast-resistant wall opening treatment technology, specifically relating to an blast-resistant device for cable openings in blast-resistant walls. Background Technology

[0002] Concrete blast-resistant walls are commonly used in the petrochemical industry. These walls isolate hazardous and non-hazardous areas to protect personnel and equipment. Non-hazardous areas contain numerous electrical devices such as distribution cabinets and central control cabinets, requiring power cables to be routed from the plant's power distribution room into these areas. This necessitates openings in the blast-resistant walls to access these cables. However, these openings weaken the walls' blast resistance, and if left untreated, explosive shockwaves can penetrate the non-hazardous areas, posing a threat to personal safety and property.

[0003] Currently, the treatment of cable entry openings in such blast-resistant walls involves simple concrete sealing or external brick wall isolation. However, such simple sealing will fail under large shock waves and cannot guarantee safety. Therefore, a safe and reliable blast-resistant device for cable openings in blast-resistant walls is designed to ensure the safety of non-explosive hazard areas under large shock waves. Utility Model Content

[0004] The technical problem to be solved by this application is to overcome the shortcomings of the prior art and provide an explosion-proof device for cable openings in explosion-proof walls. This application can effectively solve the problem of weakening the explosion-proof capability of cable entry openings in explosion-proof walls. The shock wave released by the explosion point is absorbed by this device and will not enter the non-explosive zone through the entry opening, causing damage to personnel and equipment in the non-explosive zone.

[0005] The technical solution adopted by this application to solve its existing problems is:

[0006] An explosion-proof device for cable openings in an explosion-proof wall includes an outer protective structure. The outer protective structure is arranged with an open end face facing the explosion-proof wall. The outer protective structure consists of internal reinforcing bars and an external attachment surface of the reinforcing bars.

[0007] Preferably, the steel reinforcement inside the outer enclosure structure of the device consists of horizontally arranged reinforcing bars and vertically arranged distribution bars, and the intersection of the reinforcing bars and distribution bars is connected by tie bars.

[0008] Preferably, a hinge support is provided at the intersection of the reinforcing bars on the two vertical ends of the outer enclosure structure of the device.

[0009] Preferably, the upper end of the outer enclosure structure of the device is open.

[0010] Preferably, a cover plate is provided at the upper opening of the outer enclosure structure of the device, and the cover plate has a cable tray opening.

[0011] Preferably, the device is provided with a secondary energy absorption device inside the enclosure, and the secondary energy absorption device is arranged in front of the cable bridge.

[0012] Preferably, the secondary energy absorption device comprises an energy absorption box arranged in front of the cable bridge, and the rear end of the energy absorption box is connected to the blast-resistant wall on both sides of the hole in the blast-resistant wall through a pipe.

[0013] Preferably, a first spring is sleeved on the pipe.

[0014] Preferably, the front end of the energy absorption box is provided with a front protective plate, and a plurality of second springs are arranged between the front protective plate and the energy absorption box.

[0015] Preferably, the end face of the front protective plate towards the energy absorption box is provided with an impact block, and in the initial state, the impact block is arranged in a spaced manner with the energy absorption box, and the front protective plate is vertically connected with guide plates on both sides, and the energy absorption box is arranged between the two guide plates.

[0016] Compared with the prior art, the application has the beneficial effects of:

[0017] (1) effectively solve the problem of weakening the anti-explosion ability of the blast-resistant wall at the cable inlet hole. The shock wave released by the explosion point is absorbed by the device and will not enter the non-explosion area through the inlet hole to cause damage to personnel and equipment in the non-explosion area.

[0018] (2) The device has low cost, simple material acquisition and can effectively resist explosion shock wave. The device can resist 21KPa of explosion shock load, and the device can meet the anti-explosion requirements of most anti-explosion devices on the market. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described below in combination with the drawings and examples.

[0020] Figure 1 Figure 4 is a structure diagram of the anti-explosion device of the cable hole of the blast-resistant wall according to the application,

[0021] Figure 2 Figure 5 is a top view of the anti-explosion device of the cable hole of the blast-resistant wall according to the application,

[0022] Figure 3 Figure 6 is a sectional view of the anti-explosion device of the cable hole of the blast-resistant wall according to the application,

[0023] Figure 4 Figure 7 is a connection structure diagram of the anti-explosion device of the cable hole of the blast-resistant wall according to the application and the blast-resistant wall,

[0024] Figure 5 Figure 8 is a cover plate structure diagram of the anti-explosion device of the cable hole of the blast-resistant wall according to the application,

[0025] Figure 6 Figure 1 is a top view of an anti-blast device for a cable opening of an anti-blast wall with a secondary energy absorption device.

[0026] In the figure: 1-anti-blast device, 101-cover plate, 102-device peripheral structure, 103-load bearing steel bars, 1031-hinged support, 104-distribution steel bars, 105-tie steel bars, 106-bridge opening, 2-anti-blast wall, 3-cable bridge, 4-feeder cable, 5-anti-blast wall opening, 6-energy absorption box, 7-tube, 8-first spring, 9-front guard plate, 901-guide plate, 902-impact block, 10-second spring. DETAILED DESCRIPTION

[0027] The best embodiment of the anti-blast device for a cable opening of an anti-blast wall is shown in the accompanying drawings, and will be described in further detail below in conjunction with the drawings.

[0028] As shown in Figures 1 to 5 , an anti-blast device for a cable opening of an anti-blast wall includes a device peripheral structure 102, which is in the shape of a box and is arranged with an open end facing the anti-blast wall 2. The device peripheral structure 102 is composed of internal steel bars and an attached surface outside the steel bars. The device peripheral structure 102 has an inner diameter of 2000mmX1500mm and is cast with C30 concrete, with HRB400 steel bars arranged inside.

[0029] The internal steel bars of the device peripheral structure 102 include horizontally arranged load bearing steel bars 103 and vertically arranged distribution steel bars 104, which are connected at the intersection by tie steel bars 105. The load bearing steel bars 103 at the intersection of the two vertical ends of the device peripheral structure 102 are provided with hinged supports 1031. The load bearing steel bars 103 and the distribution steel bars 104 have a diameter of 14mm and are arranged at intervals of 150mm in a double-layered and double-directional manner.

[0030] In order to facilitate the installation of the cable bridge 3, the upper end of the device peripheral structure 102 is arranged with an open end. A cover plate 101 is provided on the open end of the device peripheral structure 102, and a bridge opening 106 is provided on the cover plate 101. The cover plate 101 is made of C30 concrete, has a thickness of 150mm, and has a 30mm-thick waterproof mortar brushed on the surface and HRB400 steel bars arranged inside. A waterproof sleeve is provided on the upper part of the bridge opening 106, which is sleeved on the outside of the cable bridge 3 and is made of stainless steel and integrally cast with the cover plate 101. Steel bars with a diameter of 14mm and an interval of 150mm are arranged in the cover plate 101, which also has a certain anti-blast capacity.

[0031] In use, the above anti-explosion device 1 is installed on the anti-explosion wall 2 with an anti-explosion wall opening 5, the device outer enclosure covers the anti-explosion wall opening 5, the cable bridge 3 penetrates into the device outer enclosure 102 through the bridge opening 106, the incoming cable 4 in the cable bridge 3 enters into the anti-explosion wall 2 through the anti-explosion wall opening 5. The force-bearing steel bars 103 are anchored in the anti-explosion wall 2.

[0032] In this embodiment, the anti-explosion effect is further improved in the following two ways.

[0033] Firstly, fine sand is filled in the device outer enclosure 102.

[0034] Secondly, a secondary energy-absorbing device is arranged in the device outer enclosure 102, and the secondary energy-absorbing device is arranged in front of the cable bridge 3.

[0035] The secondary energy-absorbing device comprises an energy-absorbing box 6, the energy-absorbing box 6 is arranged in front of the cable bridge 3, and the rear end of the energy-absorbing box 6 is connected with the anti-explosion wall 2 on both sides of the anti-explosion wall opening 5 through a pipe 7. A first spring 8 is sleeved on the pipe 7.

[0036] A front protection plate 9 is arranged at the front end of the energy-absorbing box 6, and a plurality of second springs 10 are arranged between the front protection plate 9 and the energy-absorbing box 6.

[0037] The end surface of the front protection plate 9 towards the energy-absorbing box 6 is convexly provided with an impact block 902, and the impact block 902 is arranged in an interval with the energy-absorbing box 6 in the initial state. The front protection plate 9 is vertically connected with a guide plate 901 on both sides, and the energy-absorbing box 6 is arranged between the two guide plates 901.

[0038] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. An anti-blast device for a cable opening in a blast wall, characterized in that: it comprises a device peripheral structure (102) which is arranged open towards the end face of the blast wall (2), and the device peripheral structure (102) is composed of internal steel bars and an attached surface outside the steel bars.

2. The anti-blast device for a cable opening in a blast wall according to claim 1, characterized in that: the internal steel bars of the device peripheral structure (102) are composed of horizontally arranged load-bearing steel bars (103) and vertically arranged distribution steel bars (104), and the load-bearing steel bars (103) and the distribution steel bars (104) are connected through tie steel bars (105) at the intersection.

3. The anti-blast device for a cable opening in a blast wall according to claim 2, characterized in that: hinge supports (1031) are arranged at the intersection of the load-bearing steel bars (103) of the two vertical end faces of the device peripheral structure (102).

4. The anti-blast device for a cable opening in a blast wall according to claim 1 or 2 or 3, characterized in that: the upper end of the device peripheral structure (102) is arranged open.

5. The anti-blast device for a cable opening in a blast wall according to claim 4, characterized in that: a cover plate (101) is arranged on the open upper end of the device peripheral structure (102), and a bridge opening (106) is arranged on the cover plate (101).

6. The anti-blast device for a cable opening in a blast wall according to claim 1 or 2 or 3 or 5, characterized in that: a secondary energy absorption device is arranged inside the device peripheral structure (102), and the secondary energy absorption device is arranged in front of the cable bridge (3).

7. The anti-blast device for a cable opening in a blast wall according to claim 6, characterized in that: the secondary energy absorption device comprises an energy absorption box (6), the energy absorption box (6) is arranged in front of the cable bridge (3), and the rear end of the energy absorption box (6) is connected to the blast wall (2) on both sides of the blast wall opening (5) through a pipe (7).

8. The anti-blast device for a cable opening in a blast wall according to claim 7, characterized in that: a first spring (8) is arranged on the pipe (7).

9. The anti-blast device for a cable opening in a blast wall according to claim 7 or 8, characterized in that: a front protection plate (9) is arranged at the front end of the energy absorption box (6), and a plurality of second springs (10) are arranged between the front protection plate (9) and the energy absorption box (6).

10. The anti-blast device for a cable opening in a blast wall according to claim 9, characterized in that: an impact block (902) is protrudingly arranged on the end face of the front protection plate (9) towards the energy absorption box (6), and in the initial state, the impact block (902) is arranged spaced apart from the energy absorption box (6), the front protection plate (9) is vertically connected with guide plates (901) on both sides, and the energy absorption box (6) is arranged between the two guide plates (901). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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