Fireproof detection structure of MPP cable protection pipe

Abstract

The utility model discloses a fireproof detection structure of an MPP cable protection pipe, and relates to the technical field of wires and cables. The device comprises an upper positioning tube, a lower positioning tube and positioning air bags, a detection air pump is clamped and fixed at the top of the upper positioning tube, the lower positioning tube is rotatably clamped at one end of the bottom of the upper positioning tube, the positioning air bags are clamped and fixed on two sides in the upper positioning tube and the lower positioning tube, and a positioning air pump is clamped on one side of one positioning air bag in a penetrating manner. Through the arrangement of the upper positioning pipe, the lower positioning pipe and the positioning air bag, the problems that when a fireproof plugging structure is used for improving the fireproof performance of the cable protection pipe, whether a gap exists between the plugging structure and the protection pipe or not is difficult to judge during construction, the detection structure of the cable protection pipe is complex, the use mode is tedious, and the construction cost is low are solved. The size is generally large, and transportation and storage are inconvenient.

Description

Technical Field

[0001] This utility model belongs to the field of wire and cable technology, and in particular relates to a fire-resistant detection structure for an MPP cable protection pipe. Background Technology

[0002] A cable is an electrical or signal transmission device, typically composed of several or groups of conductors. It is mainly classified into power cables, control cables, shielded cables, high-temperature cables, signal cables, coaxial cables, fire-resistant cables, aluminum alloy cables, etc. When cables are put into use, to ensure their normal operation, cable protection conduits are usually installed on their outer sides. MPP cable protection conduits are widely used in municipal, telecommunications, power, gas, water supply, and heating pipeline projects due to their lightweight, smooth surface, low frictional resistance, weldability, excellent electrical insulation, high heat distortion temperature, and low-temperature impact resistance. However, they still have the following drawbacks in practical use:

[0003] The utility model disclosed in CN217362423U is a fireproof sealing device for cable protection pipes. The protective sleeve contains a protective pipe with its right end extending to the right side of the protective sleeve. The protective pipe contains a cable with its left end extending to the left side of the protective sleeve. The right end of the protective sleeve is symmetrically and rotatably connected to two arc-shaped clamps. The fireproof sealing device prevents external gases from entering the cable protection pipe. However, after the device is installed, it is often impossible to determine whether a stable seal has been achieved inside the cable protection pipe. Gaps may exist between the device and the protective pipe, resulting in poor sealing effect and failure to provide fire protection.

[0004] Testing devices for cable protection pipes are often complex in structure and cumbersome in operation, increasing the difficulty of operation. In addition, the devices are large in size. Especially when the performance of cable protection pipes needs to be tested after actual construction and installation, the devices often need to be transported, increasing construction costs. Utility Model Content

[0005] The purpose of this utility model is to provide a fireproof detection structure for MPP cable protection pipes. By using an upper positioning pipe, a lower positioning pipe, and a positioning airbag, it solves the problem that while fireproof sealing structures can improve the fireproof performance of cable protection pipes, it is difficult to determine whether there are gaps between the sealing structure and the protection pipe during construction. In addition, the detection structure of cable protection pipes is relatively complex, the usage is cumbersome, and the size is usually large, making it inconvenient for transportation and storage.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a fireproof detection structure for an MPP cable protection pipe, including an upper positioning tube, a lower positioning tube and a positioning airbag. A detection air pump is snapped and fixed at the top of the upper positioning tube, and the lower positioning tube is rotatably snapped and fixed at one end of the bottom of the upper positioning tube. Positioning airbags are snapped and fixed on both sides of the upper and lower positioning tubes, and a positioning air pump is snapped and fixed through one side of each positioning airbag.

[0008] After fixing the fireproof sealing structure to the outside of the cable protection pipe, the upper and lower positioning tubes are fitted onto the outer circumference of the cable protection pipe and the fireproof sealing structure. The positioning air pump is controlled to inflate the positioning airbag, causing the airbag to expand and press against the outer circumference of the cable protection pipe, thus wrapping the connection position of the cable protection pipe and the fireproof sealing structure. Then, the detection air pump is controlled to pump air into the upper and lower positioning tubes, causing the air pressure inside the structure to rise to a certain value. The rate of change of air pressure is then used to determine whether there is a gap between the cable protection pipe and the fireproof sealing structure. When a gap exists, the air inside the detection structure can squeeze into the fireproof sealing structure and the cable protection pipe through the gap, causing the rate of change of air pressure to exceed the threshold. This allows the staff to make timely adjustments to ensure the fireproof effect of the cable protection pipe. The detection structure is compact, easy to transport and store, simple in structure, and easy to operate.

[0009] Furthermore, a control component is snapped through the top of the upper positioning tube, a pressure sensing component is snapped through the bottom of the control component, an air inlet pipe is snapped through the bottom of the detection air pump, and the air inlet pipe is inserted through the top of the upper positioning tube.

[0010] The control components enable control of the detection air pump and the positioning air pump, improving the ease of use of the detection structure. After air is pumped into the detection structure by the detection air pump, the air pressure sensor components can monitor the air pressure inside the detection structure. When there is a gap, the air inside the detection structure can squeeze into the fireproof sealing structure and cable protection pipe through the gap, causing the air pressure velocity change to exceed the threshold, which allows the staff to make timely adjustments and ensure the fireproof effect of the cable protection pipe.

[0011] Furthermore, a first limiting plate is welded and fixed to both sides of the bottom of the upper positioning tube, and a first connecting plate is welded and fixed to one end of the bottom of the upper positioning tube. The two positioning airbags are respectively attached to the inner sides of the two first limiting plates.

[0012] The first connecting plate enables the upper and lower positioning tubes to be positioned and connected, ensuring the stability of the detection structure during fire detection. The first limiting plate limits the positioning airbag, ensuring that the positioning airbag is stably attached to the outer circumference of the cable protection tube.

[0013] Furthermore, a second limiting plate is welded and fixed to both sides of the top of the lower positioning tube, a second connecting plate is welded and fixed to one end of the top of the lower positioning tube, a connecting bolt is screwed through the bottom of the second connecting plate, the second connecting plate is attached to the bottom of the first connecting plate, the connecting bolt is screwed through the bottom of the first connecting plate, and the two positioning airbags are respectively attached to the inner sides of the two second limiting plates.

[0014] When using the fire detection structure, the upper positioning tube is fitted onto the outside of the cable protection pipe and the fireproof sealing structure, and then the lower positioning tube is rotated to fit onto the outside of the cable protection pipe and the fireproof sealing structure. The upper and lower positioning tubes are then positioned and connected by tightening the connecting bolts. The operation is simple and convenient.

[0015] Furthermore, a connecting tube is inserted through and snapped onto one side of one of the positioning airbags, and the other end of the connecting tube is inserted through and snapped onto one side of another positioning airbag; the positioning air pump is inserted through and snapped onto one side of a first connecting plate.

[0016] By pumping air into the two positioning airbags using a positioning air pump, the two airbags can expand and press against the outer circumference of the cable protection pipe, thus wrapping and sealing the connection position and fireproof sealing structure of the cable protection pipe, ensuring the accuracy of subsequent test results.

[0017] This utility model has the following beneficial effects:

[0018] This invention solves the problem of cable protection pipes being protected from external gas entry by fireproof sealing devices. However, after installation, it is often impossible to determine whether the device provides a stable seal to the cable protection pipe, and gaps may exist between the device and the protection pipe, resulting in poor sealing and ineffective fire protection. After the upper and lower positioning tubes are fixed at the connection position of the cable protection pipe and on the outside of the fireproof sealing structure, a detection air pump is controlled to pump air into the detection structure, raising the air pressure inside the structure to a certain value. When gaps exist, the air inside the detection structure can squeeze into the fireproof sealing structure and the cable protection pipe through the gaps, causing the air pressure change rate inside the detection structure to exceed the threshold, facilitating timely adjustments by staff and ensuring the fireproof effect of the cable protection pipe.

[0019] This invention solves the problems of complex structures, cumbersome operation, and large size of cable protection pipe testing devices by setting up an upper positioning tube, a lower positioning tube, and a positioning cylinder. These issues are particularly problematic when testing the performance of cable protection pipes after installation, as the devices often require transportation, increasing construction costs. After fixing a fireproof sealing structure to the outside of the cable protection pipe, the upper and lower positioning tubes are fitted onto the outer circumference of both the cable protection pipe and the fireproof sealing structure. A positioning air pump inflates the positioning airbag, causing it to expand and press against the outer circumference of the cable protection pipe, thus wrapping and sealing the connection point and the fireproof sealing structure. Then, a testing air pump pumps air into the testing structure, raising the internal air pressure to a certain value. The rate of change in air pressure determines whether there is a gap between the cable protection pipe and the fireproof sealing structure. The testing structure is compact, easy to transport and store, simple in structure, and convenient to operate. Attached Figure Description

[0020] Figure 1 This is a structural rendering of the present invention;

[0021] Figure 2 This is a structural diagram of the upper positioning tube of this utility model;

[0022] Figure 3 This is a bottom view of the upper positioning tube of this utility model;

[0023] Figure 4 This is a structural diagram of the lower positioning tube of this utility model;

[0024] Figure 5 This is a structural diagram of the positioning airbag of this utility model.

[0025] Figure label:

[0026] 1. Upper positioning tube; 101. Control component; 102. Detection air pump; 103. First connecting plate; 104. Air pressure sensor component; 105. Air inlet pipe; 106. First limiting plate; 2. Lower positioning tube; 201. Second limiting plate; 202. Second connecting plate; 203. Connecting bolt; 3. Positioning airbag; 301. Positioning air pump; 302. Connecting tube. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Please see Figure 1-5As shown, this utility model is a fireproof detection structure for an MPP cable protection pipe, including an upper positioning tube 1, a lower positioning tube 2 and a positioning airbag 3. A detection air pump 102 is fixedly snapped to the top of the upper positioning tube 1, and the lower positioning tube 2 is rotatably snapped to one end of the bottom of the upper positioning tube 1. Positioning airbags 3 are snapped to both sides of the upper positioning tube 1 and the lower positioning tube 2. A positioning air pump 301 is snapped through one side of a positioning airbag 3.

[0029] After fixing the fireproof sealing structure on the outside of the MPP cable protection pipe, the upper positioning tube 1 and the lower positioning tube 2 are sleeved on the outer circumference of the cable protection pipe and the fireproof sealing structure. The connecting bolt 203 is tightened to connect and position the upper positioning tube 1 and the lower positioning tube 2. The positioning air pump 301 is controlled to inflate the positioning airbag 3, causing the positioning airbag 3 to expand and press and position itself on the outer circumference of the cable protection pipe, thus wrapping and sealing the connection position of the cable protection pipe and the fireproof sealing structure. The detection air pump 102 is controlled to pump air into the upper positioning tube 1 and the lower positioning tube 2, causing the air pressure inside the structure to rise to a certain value. The air pressure is monitored by the control component 101 and the air pressure sensing component 104. When there is a gap between the cable protection pipe and the fireproof sealing structure, the air inside the detection structure is squeezed into the fireproof sealing structure and the cable protection pipe through the gap, which causes the air pressure rate to change greater than the threshold, making it convenient for staff to make timely adjustments.

[0030] Among them, such as Figure 1-3 As shown, a control component 101 is snapped through the top of the upper positioning tube 1, and a pressure sensor component 104 is snapped through and fixed to the bottom of the control component 101. An air inlet pipe 105 is snapped through and fixed to the bottom of the detection air pump 102. The air inlet pipe 105 is inserted through and connected to the top of the upper positioning tube 1. First limiting plates 106 are welded and fixed to both sides of the bottom of the upper positioning tube 1. A first connecting plate 103 is welded and fixed to one end of the bottom of the upper positioning tube 1. Two positioning airbags 3 are respectively attached to the inner side of the two first limiting plates 106.

[0031] After the upper positioning tube 1 and the lower positioning tube 2 are positioned outside the MPP cable protection pipe, the detection air pump 102 is controlled by the control component 101 to pump air into the detection structure through the air inlet pipe 105, and the air pressure in the detection structure is monitored by the air pressure sensor component 104. After the air pressure in the detection structure reaches a suitable value, the detection air pump 102 is turned off, and the air pressure change in the detection structure is viewed by the control component 101. When there is a gap between the cable protection pipe and the fireproof sealing structure, the air in the detection structure is squeezed into the fireproof sealing structure and the cable protection pipe through the gap, which causes the air pressure rate change to exceed the threshold, so that the staff can make timely adjustments.

[0032] Among them, such as Figure 1 , 4As shown, the lower positioning tube 2 has a second limiting plate 201 welded and fixed on both sides of the top. The lower positioning tube 2 has a second connecting plate 202 welded and fixed at one end of the top. The bottom of the second connecting plate 202 is screwed through and connected with a connecting bolt 203. The second connecting plate 202 is attached to the bottom of the first connecting plate 103. The connecting bolt 203 is screwed through and connected to the bottom of the first connecting plate 103. The two positioning airbags 3 are respectively attached to the inner side of the two second limiting plates 201.

[0033] When using the fire detection structure, the upper positioning tube 1 is sleeved on the outside of the cable protection pipe and the fireproof sealing structure, and then the lower positioning tube 2 is rotated to sleeve on the outside of the cable protection pipe and the fireproof sealing structure. The connecting bolt 203 is tightened to pass through the first connecting plate 103, thus positioning and connecting the upper positioning tube 1 and the lower positioning tube 2.

[0034] Among them, such as Figure 1 , 5 As shown, a connecting tube 302 is inserted and snapped into one side of a positioning airbag 3, and the other end of the connecting tube 302 is inserted and snapped into one side of another positioning airbag 3. The positioning air pump 301 is inserted and snapped into one side of a first connecting plate 103.

[0035] After the upper positioning tube 1 and the lower positioning tube 2 are sleeved on the outside of the MPP cable protection pipe and the fireproof sealing structure, the positioning air pump 301 is controlled to pump air into the two positioning airbags 3, so that the two positioning airbags 3 expand and are squeezed against the outer circumference of the cable protection pipe, thus wrapping and sealing the connection position of the cable protection pipe and the fireproof sealing structure.

[0036] The specific working principle of this utility model is as follows: When using the fireproof detection structure, the upper positioning tube 1 is sleeved on the outside of the MPP cable protection pipe and the fireproof sealing structure. Then, the lower positioning tube 2 is rotated to sleeve on the outside of the cable protection pipe and the fireproof sealing structure. The connecting bolt 203 is tightened to pass through the first connecting plate 103, thus positioning and connecting the upper positioning tube 1 and the lower positioning tube 2. The positioning air pump 301 is controlled by the control component 101 to pump air into the two positioning airbags 3, causing the two positioning airbags 3 to expand and press against the outer circumference of the cable protection pipe, thus positioning and connecting the cable protection pipe. The fire-sealing structure is wrapped and sealed. The detection air pump 102 pumps air into the detection structure through the air inlet pipe 105, and the air pressure in the detection structure is monitored by the air pressure sensor component 104. After the air pressure in the detection structure reaches a suitable value, the detection air pump 102 is turned off, and the air pressure change in the detection structure is viewed by the control component 101. When there is a gap between the cable protection pipe and the fire-sealing structure, the air in the detection structure is squeezed into the fire-sealing structure and the cable protection pipe through the gap, which causes the air pressure rate change to exceed the threshold, so that the staff can make timely adjustments.

[0037] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A fire-resistant detection structure for an MPP cable protection pipe, comprising an upper positioning tube (1), a lower positioning tube (2), and a positioning airbag (3), characterized in that: The top of the upper positioning tube (1) is fixed with a detection air pump (102), and the bottom end of the upper positioning tube (1) is rotatably fixed with a lower positioning tube (2). Both sides of the upper positioning tube (1) and the lower positioning tube (2) are fixed with positioning airbags (3), and a positioning air pump (301) is fixed through one side of a positioning airbag (3).

2. The fire detection structure for an MPP cable protection pipe according to claim 1, characterized in that: The top of the upper positioning tube (1) is connected to a control component (101), the bottom of the control component (101) is fixed to a pressure sensing component (104), the bottom of the detection air pump (102) is connected to an air inlet pipe (105), and the air inlet pipe (105) is inserted into the top of the upper positioning tube (1).

3. The fire detection structure for an MPP cable protection pipe according to claim 1, characterized in that: The upper positioning tube (1) has a first limiting plate (106) welded and fixed on both sides of its bottom. The upper positioning tube (1) has a first connecting plate (103) welded and fixed at one end of its bottom. The two positioning airbags (3) are respectively attached to the inner sides of the two first limiting plates (106).

4. The fire detection structure for an MPP cable protection pipe according to claim 3, characterized in that: The lower positioning tube (2) has a second limiting plate (201) welded and fixed on both sides of the top. The lower positioning tube (2) has a second connecting plate (202) welded and fixed at one end of the top. The bottom of the second connecting plate (202) is screwed with a connecting bolt (203). The second connecting plate (202) is attached to the bottom of the first connecting plate (103). The connecting bolt (203) is screwed to the bottom of the first connecting plate (103). The two positioning airbags (3) are respectively attached to the inner side of the two second limiting plates (201).

5. The fire detection structure for an MPP cable protection pipe according to claim 3, characterized in that: A connecting tube (302) is inserted through one side of one of the positioning airbags (3), and the other end of the connecting tube (302) is inserted through one side of another positioning airbag (3). The positioning air pump (301) is inserted through one side of a first connecting plate (103).

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