Prefabricated isolation layer and ring main unit

Abstract

The utility model relates to an assembly type prefabricated isolation layer and ring main unit, including reinforced skeleton, be located in reinforced skeleton and be used for the fixed pipe of cable and pour in reinforced skeleton on concrete, the fixed pipe is equipped with the cable variable diameter module for cable passing, the fixed ring of cable sealing element is fixed to the fixed pipe inside screw thread connection and is extruded sealing with fixed pipe support, the utility model discloses when using, use prefabricated isolation layer to place on ring main unit opening, then use sealant to seal the gap, thereby play the function of preventing condensation, make ring main unit keep dry, use fixed pipe and cable variable diameter module simultaneously for cable through, cable variable diameter module, for prior art, its circumference is equipped with sealing rubber layer, uses fixed ring and fixed pipe screw thread connection while extruding sealing rubber layer, thereby realize the sealing of fixed pipe and cable variable diameter module, thereby avoid condensation to enter into ring main unit.

Description

Technical Field

[0001] This utility model relates to the field of basic technology, and in particular to the field of prefabricated basic technology, specifically referring to a prefabricated prefabricated isolation layer and ring network box. Background Technology

[0002] In power systems, ring main units (RMUs) are critical distribution equipment, and the stability and reliability of their installation foundations are crucial to the stable operation of the entire power system. Traditional on-site cast-in-place foundations suffer from problems such as long construction cycles, difficulty in quality control, and significant susceptibility to weather conditions. With the acceleration of urbanization and the growth of electricity demand, higher requirements are being placed on the prefabrication, standardization, and modularization of RMU foundations.

[0003] Chinese utility model patent application number 202021292475.X discloses a prefabricated ring main unit foundation, but it does not have an isolation layer to prevent condensation. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a prefabricated prefabricated isolation layer and a ring network box, which are used in conjunction with the ring network box to achieve the effect of preventing condensation.

[0005] This utility model is achieved through the following technical solution: a prefabricated prefabricated isolation layer, including a steel reinforcement skeleton, a fixing pipe located inside the steel reinforcement skeleton for passing through cables, and concrete poured on the steel reinforcement skeleton. The fixing pipe is provided with a cable reducing module for the cable to pass through, and a fixing ring is threadedly connected inside the fixing pipe to support and squeeze and seal the cable sealing component with the fixing pipe.

[0006] In use, this utility model employs a prefabricated isolation layer placed on the opening of the ring main unit, followed by sealing the gaps with sealant to prevent condensation and keep the inside of the ring main unit dry. Simultaneously, a fixed pipe and a cable reducing module are used for cable passage. The cable reducing module, a prior art technology, has a circumferentially sealed rubber layer. The sealing rubber layer is compressed while the fixed ring is threadedly connected to the fixed pipe, thus achieving a seal between the fixed pipe and the cable reducing module, preventing condensation from entering the ring main unit.

[0007] Preferably, the fixed pipe includes a top pipe, a first reducing pipe, an intermediate pipe, a second reducing pipe, and a bottom pipe arranged sequentially from top to bottom. The bottom pipe has a thread that is threaded to the fixing ring. The diameters of the bottom pipe and the top pipe are both larger than the diameter of the intermediate pipe.

[0008] This preferred solution improves the sealing effect by setting a second reducing tube, which allows the sealing rubber layer of the cable reducing module to fully contact the second reducing tube.

[0009] Preferably, both the bottom pipe and the top pipe are provided with expansion rings on their circumferential surfaces. This preferred embodiment increases the contact area with the concrete by providing expansion rings, thereby improving the connection strength between the fixed pipe and the concrete.

[0010] Preferably, the fixing ring includes a connecting pipe that is threaded to the bottom pipe, and an extrusion pipe that is fixed to the connecting ring and extruded and sealed to the second reducing pipe to fix the cable reducing module.

[0011] This preferred solution achieves compression sealing by using a compression tube to compress the sealing rubber layer.

[0012] Preferably, the reinforcing steel frame is also fixedly connected to a threaded pipe for hoisting. This preferred embodiment facilitates hoisting by pre-embedding the threaded pipe.

[0013] Preferably, it also includes angle steel bolted to the ring network box and supporting the concrete and steel reinforcement skeleton.

[0014] This preferred solution uses angle steel to support the concrete and steel reinforcement framework.

[0015] A ring network box using the aforementioned prefabricated prefabricated isolation layer.

[0016] The beneficial effects of this utility model are as follows: A prefabricated isolation layer is placed on the opening of the ring main unit, and then sealant is used to seal the gaps, thereby preventing condensation and keeping the inside of the ring main unit dry. At the same time, a fixed pipe and a cable reducing module are used for cable passage. The cable reducing module is an existing technology, and it has a sealing rubber layer on its circumference. The sealing rubber layer is squeezed while the fixed ring is threaded to the fixed pipe, thereby achieving a seal between the fixed pipe and the cable reducing module, thus preventing condensation from entering the ring main unit. By setting a second reducing pipe, the sealing rubber layer of the cable reducing module is in full contact with the second reducing pipe, thereby improving the sealing effect. Attached Figure Description

[0017] Figure 1 This is a top view of the structural components of this utility model; Figure 2 This is a top view of the steel reinforcement cage of this utility model; Figure 3 This is a sectional view of the fixing tube and the fixing ring; Figure 4 This is a schematic diagram of the angle steel section; Figure 5 This is a three-dimensional schematic diagram of the ring mesh box in Example 2; Figure 6 This is a top view of the connection between the base plate and the embedded plate in Example 2; Figure 7 This is a schematic cross-sectional view of the main body in Example 2; As shown in the figure: 1. Embedded plate, 2. Base plate, 3. Main body, 4. Low well, 5. High well, 6. Top cover, 7. Height-enhancing wall, 8. Protrusion, 9. Limiting steel bar, 10. Limiting ring, 20. Steel cage, 21. Threaded pipe, 22. Fixed pipe, 23. Second reducing pipe, 24. Expanding ring, 25. Fixed ring, 26. Angle steel, 31. Reserved frame groove, 32. Reserved hole groove. Detailed Implementation

[0018] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0019] Example 1: See attached document Figure 1-4 This utility model discloses a prefabricated prefabricated isolation layer and a ring network box. The prefabricated prefabricated isolation layer includes a steel reinforcement frame 20, a fixing pipe 22 located inside the steel reinforcement frame 20 for cable installation, and concrete poured on the steel reinforcement frame 20. The fixed pipe 22 is equipped with a cable reducing module for the cable to pass through. The cable reducing module is existing technology. The cable reducing module is also called a cable through-wall sealing module, sealing module, or reducing module. It is composed of two half pieces and a central plug. It adopts modular reducing technology. By simply peeling off the layers in the two half pieces, it can match cables or pipes of different sizes. Moreover, the cable reducing module can be customized.

[0020] The fixing tube 22 is internally threaded with a fixing ring 25 that supports and is squeezed and sealed to fix the cable seal.

[0021] The fixed pipe 22 includes a top pipe, a first reducing pipe, an intermediate pipe, a second reducing pipe 23, and a bottom pipe arranged sequentially from top to bottom. The bottom pipe has a thread that is threaded to the fixed ring 25. The diameters of the bottom pipe and the top pipe are both larger than the diameter of the intermediate pipe.

[0022] Both the bottom pipe and the top pipe are provided with expansion rings 24 on their circumferential surfaces.

[0023] The fixing ring 25 includes a connecting pipe that is threaded to the bottom pipe, and a compression pipe that is fixed to the connecting ring and squeezed and sealed to the second reducing pipe 23 to fix the cable reducing module.

[0024] The steel reinforcement cage 20 is also fixed with a threaded pipe 21 for hoisting.

[0025] This solution is installed inside the ring main unit, which contains angle steel 26 bolted to the ring main unit and supporting the prefabricated isolation layer.

[0026] After placing the prefabricated isolation layer into the ring network box, sealant is then used to seal the gaps between the isolation layer and the ring network box.

[0027] After the cable reducing module is placed into the second reducing tube 23, the sealing rubber layer inside the cable reducing module is laid on the inner circumference of the second reducing tube 23. Then, the fixing ring 25 is threaded onto the fixing tube 22, and the extrusion tube squeezes the sealing rubber layer.

[0028] A prefabricated isolation layer is placed on the opening of the ring main unit, and then sealant is used to seal the gaps to prevent condensation and keep the inside of the ring main unit dry. At the same time, a fixed pipe 22 and a cable reducing module are used for cable passage. The cable reducing module is existing technology and has a sealing rubber layer around its circumference. The sealing rubber layer is squeezed by the threaded connection between the fixed ring 25 and the fixed pipe 22, thereby achieving a seal between the fixed pipe 22 and the cable reducing module, thus preventing condensation from entering the ring main unit. The setting of the second reducing pipe 23 allows the sealing rubber layer of the cable reducing module to fully contact the second reducing pipe 23, thereby improving the sealing effect.

[0029] Example 2: See attached document Figure 1-7 This embodiment is a prefabricated prefabricated isolation layer and ring network box. The prefabricated prefabricated isolation layer includes a steel reinforcement frame 20, a fixing pipe 22 located inside the steel reinforcement frame 20 for cable installation, and concrete poured on the steel reinforcement frame 20. The fixed tube 22 is provided with a cable reducing module for the cable to pass through. The cable reducing module is existing technology. The fixed tube 22 is internally threaded with a fixing ring 25 that supports and is squeezed and sealed to fix the cable sealing element.

[0030] The fixed pipe 22 includes a top pipe, a first reducing pipe, an intermediate pipe, a second reducing pipe 23, and a bottom pipe arranged sequentially from top to bottom. The bottom pipe has a thread that is threaded to the fixed ring 25. The diameters of the bottom pipe and the top pipe are both larger than the diameter of the intermediate pipe.

[0031] Both the bottom pipe and the top pipe are provided with expansion rings 24 on their circumferential surfaces.

[0032] The fixing ring 25 includes a connecting pipe that is threaded to the bottom pipe, and a compression pipe that is fixed to the connecting ring and squeezed and sealed to the second reducing pipe 23 to fix the cable reducing module.

[0033] The steel reinforcement cage 20 is also fixed with a threaded pipe 21 for hoisting.

[0034] After the cable reducing module is placed into the second reducing pipe 23, the sealing rubber layer inside the cable reducing module is laid on the inner circumference of the second reducing pipe 23. Then, the fixing ring 25 is threaded onto the fixing pipe 22, and the extrusion pipe squeezes the sealing rubber layer in place. The ring network box includes a prefabricated box foundation and a pre-embedded foundation. The prefabricated box foundation includes a base plate 2 and a frame set on the base plate 2 and sealed to the base plate 2. The frame includes a main body 3 connecting the high well 5 and the low well 4, and an upper cover 6 set on the main body 3. A height-enhancing wall 7 is also provided between the main body 3 and the upper cover 6. The height-enhancing wall 7 can be selected for use according to the actual situation. The gaps between the main body 3, the high well 5, the low well 4, the base plate 2, and the height-enhancing wall 7 are all sealed with sealant.

[0035] The main body 3 includes a long and high sidewall, a wide and high sidewall, a long and high sidewall, and a wide and high sidewall that are connected end to end and arranged in a circumferential order. The long and high sidewall is a sidewall based on the long side and the high side of the main body 3, and the wide and high sidewall is a sidewall based on the wide side and the high side of the main body 3. The length of the long side of the main body 3 is greater than the length of the wide side. A reserved frame groove 31 is provided on one long and high sidewall and one wide and high sidewall. A reserved hole groove 32 for cable to pass through is provided on another long and high sidewall and another wide and high sidewall.

[0036] The embedded foundation includes an embedded plate 1 that supports the base plate 2. The embedded plate 1 is made of concrete. The embedded plate 1 is provided with a number of limiting steel bars 9 arranged along the edge of the base plate 2. The number of limiting steel bars 9 form a rectangle that matches the edge of the base plate 2.

[0037] The base plate 2 is also connected to a limiting rod corresponding to the limiting steel bar 9. A limiting ring 10 is fixed to the limiting rod and inserted into the limiting steel bar 9. The inner diameter of the limiting ring 10 is larger than the diameter of the limiting steel bar 9. The height of the limiting steel bar 9 in front of the base plate 2, the height of the limiting steel bar 9 on the left side of the base plate 2, the height of the limiting steel bar 9 behind the base plate 2, and the height of the limiting steel bar 9 on the right side of the base plate 2 gradually decrease.

[0038] See attached document Figure 2 The top side is front, the bottom side is back, the left side is left, and the right side is right.

[0039] The base plate 2 has slots on its four sides that correspond to and fit the limiting rods. The limiting rods are inserted into the slots and connected to the slots by friction.

[0040] The top surface of the pre-embedded plate 1 is provided with an upward protrusion 8, and the bottom plate 2 is provided with a groove for the protrusion 8 to be inserted.

[0041] The top cover has an opening for placing the prefabricated isolation layer. An angle steel supporting the prefabricated isolation layer is bolted inside the top cover. After the prefabricated isolation layer is placed on the angle steel, the gap between the isolation layer and the top cover is sealed with sealant.

[0042] The pouring of the embedded plate 1 makes the ground beneath the base plate 2 flat and firm, facilitating the support of the precast box foundation. Simultaneously, the setting of the limiting steel bars 9 marks the edge of the base plate 2, making its placement easier. The limiting rings 10 are inserted into the limiting steel bars 9, thus positioning the base plate 2 on the corresponding side. If all the limiting steel bars 9 are the same height, during hoisting, all the limiting rings 10 and limiting steel bars 9 need to be aligned at the same height, increasing the positioning difficulty. However, when the limiting steel bars 9 on different sides have different heights, they can be positioned side by side according to their height, reducing the positioning difficulty. Both the reserved frame groove 31 and the reserved hole groove 32 are grooves, allowing for the drilling of corresponding reserved hole grooves or reserved frame grooves 31 based on the actual site conditions, meeting the needs of various site environments.

[0043] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A prefabricated modular isolation layer, characterized in that: It includes a steel reinforcement cage (20), a fixing pipe (22) located inside the steel reinforcement cage (20) for passing through the cable, and concrete poured on the steel reinforcement cage (20). The fixing pipe (22) is provided with a cable reducing module for the cable to pass through. The fixing pipe (22) is threaded with a fixing ring (25) that supports and presses and seals the cable sealing element with the fixing pipe (22).

2. The prefabricated prefabricated isolation layer according to claim 1, characterized in that: The fixed pipe (22) includes a top pipe, a first reducing pipe, an intermediate pipe, a second reducing pipe (23), and a bottom pipe arranged sequentially from top to bottom. The bottom pipe has a thread that is threaded to the fixed ring (25). The diameters of the bottom pipe and the top pipe are both larger than the diameter of the intermediate pipe.

3. The prefabricated prefabricated isolation layer according to claim 2, characterized in that: Both the bottom pipe and the top pipe are provided with expansion rings (24) on their circumferential surfaces.

4. The prefabricated prefabricated isolation layer according to claim 2, characterized in that: The fixing ring (25) includes a connecting pipe that is threaded to the bottom pipe, and a compression pipe that is fixed to the connecting ring and squeezed and sealed to the second reducing pipe (23) to fix the cable reducing module.

5. The prefabricated prefabricated isolation layer according to claim 1, characterized in that: The steel reinforcement cage (20) is also fixed with a threaded pipe (21) for hoisting.

6. The prefabricated prefabricated isolation layer according to claim 1, characterized in that: It also includes angle steel (26) bolted to the ring mesh box and supporting the concrete and steel reinforcement skeleton (20).

7. A ring main unit, characterized in that: The ring network box is equipped with the prefabricated isolation layer as described in claim 1.

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