Freezing pipeline system for open cut tunnel
By designing a refrigeration piping system and utilizing connecting components and valves to achieve detachable connections between refrigeration pipes and connecting pipes, the problems of refrigeration pipe leakage and inconvenient replacement are solved, thereby improving the efficiency of refrigeration pipe replacement and construction safety.
Patent Information
- Application Number
- CN202423282420.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-30
AI Technical Summary
During the shield receiving process, the freezing pipes are prone to leakage when passing through the concrete layer in the open hole, causing stratum collapse and groundwater leakage. In addition, the freezing pipes are inconvenient to replace, which increases the difficulty and risk of construction.
A refrigeration piping system was designed, including refrigeration pipes, connecting pipes, and valves. The refrigeration pipes and connecting pipes are detachably connected by connecting components. The valves are used to cut off the liquid flow to prevent leakage, and the refrigeration pipes can be replaced within the working space, simplifying the replacement process.
It improves the efficiency of refrigerant pipe replacement, reduces costs, ensures the safety and ease of operation at the construction site, and avoids the impact of the cover plate on the maintenance and replacement of refrigerant pipes.
Smart Images
Figure CN223459419U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of shield receiving, especially relates to a frozen pipeline system for open cut tunnel. BACKGROUND
[0002] Shield receiving is an important link in shield construction and is widely used in underground engineering such as subway and tunnel. The prior art adopts the combination of open cut tunnel and frozen pipe during shield receiving. The open cut tunnel can provide a buffer zone for shield receiving, so that the shield machine can gradually adapt to the transition from the tunneling state to the stopping state during the receiving process, avoiding the direct impact of the shield machine on the receiving well structure, and protecting the safety of the receiving well and the shield machine. The frozen pipe can freeze the water in the stratum into ice to form a frozen wall, thereby improving the strength and stability of the stratum and preventing stratum collapse and underground water leakage during shield receiving, thus improving the efficiency and safety of shield receiving.
[0003] During shield receiving by the combination of open cut tunnel and frozen pipe, the frozen pipe needs to pass through the concrete layer in the open cut tunnel. When water seepage occurs in the open cut tunnel, the water pressure in the open cut tunnel will increase suddenly, which can easily cause the frozen pipe to leak or even break, affecting the stability of the frozen wall and causing potential safety hazards such as stratum collapse and underground water leakage during the receiving process of the shield machine, posing a threat to the safety of the shield machine and the surrounding environment. Moreover, when the frozen pipe is repaired or replaced, it is inconvenient to repair or replace the frozen pipe because the frozen pipe passes through the concrete layer in the open cut tunnel, increasing the difficulty and risk of construction.
[0004] Therefore, there is an urgent need for a frozen pipeline system for open cut tunnel to solve the above problems. UTILITY MODEL CONTENTS
[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a frozen pipeline system for open cut tunnel, which can improve the efficiency of replacing the frozen pipe in the open cut tunnel, reduce the cost of replacing the frozen pipe, and ensure the safety of the construction site during the replacement of the frozen pipe.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A frozen pipeline system for open cut tunnel is provided, a cover plate is arranged at the portal of the open cut tunnel, a concrete layer is arranged in the open cut tunnel, and the frozen pipeline system comprises:
[0008] A frozen pipe is arranged on one side of the cover plate and is used to form a frozen wall in the open cut tunnel. The concrete layer and the cover plate are vertically spaced apart, a working space is formed between the concrete layer and the cover plate, the upper end of the frozen pipe is located above the cover plate, and the lower end of the frozen pipe extends into the working space.
[0009] The connecting pipe is arranged in the concrete layer, and the upper end of the connecting pipe is located in the working space; the connecting assembly is located in the working space, and the upper end of the connecting pipe is detachably connected with the lower end of the refrigeration pipe through the connecting assembly.
[0010] The valve is arranged in the connecting pipe and is used for cutting off or connecting the connecting pipe.
[0011] Optionally, the refrigeration pipe system further comprises a plurality of water-stopping ring plates embedded in the concrete layer, the water-stopping ring plates are sleeved on the connecting pipe and are fixedly connected with the connecting pipe.
[0012] Optionally, the water-stopping ring plates are made of steel.
[0013] Optionally, the connecting assembly comprises a fastener, a first connecting piece and a second connecting piece, the first connecting piece is sealingly connected with the lower end of the refrigeration pipe, the second connecting piece is sealingly connected with the upper end of the connecting pipe, and the first connecting piece is detachably connected with the second connecting piece through the fastener.
[0014] Optionally, a fish scale is arranged between the first connecting piece and the refrigeration pipe and between the second connecting piece and the connecting pipe.
[0015] Optionally, the fastener comprises a screw rod part and a fastening seat, the screw rod part is arranged in the first connecting piece and the second connecting piece and is threadedly connected with the fastening seat.
[0016] Optionally, one end of the screw rod part is provided with a limiting part, when the screw rod part is arranged in the first connecting piece and the second connecting piece, the limiting part is located on the side of the first connecting piece away from the fastening seat, so as to limit the movement of the screw rod part.
[0017] Optionally, the open cut tunnel is provided with an external pipeline other than the refrigeration pipe system, and the lower end of the connecting pipe is detachably connected with the external pipeline.
[0018] Optionally, the upper end of the connecting pipe is kept at a preset distance from the top surface of the concrete layer, and the lower end of the connecting pipe is kept at a preset distance from the bottom surface of the concrete layer.
[0019] Optionally, the connecting pipe is a seamless steel pipe.
[0020] Compared with the prior art, the refrigeration pipe system has the following beneficial effects:
[0021] The utility model provides a kind of for open cut tunnel's frozen pipeline system, when needing to replace frozen pipe, close valve to cut off connecting pipe, so that connecting pipe and frozen pipe inside will not have liquid pass again, to avoid frozen pipe replacement process liquid from connecting pipe, to leak phenomenon occurs, ensure the safety of construction site when frozen pipe replacement;After valve is closed, in working space, connecting pipe is separated from frozen pipe using connecting assembly, and using connecting assembly can be connected with connecting pipe after replacement frozen pipe, without replacing the connecting pipe arranged in concrete layer, improve the efficiency of frozen pipe replacement, reduce the cost of frozen pipe replacement;After frozen pipe replacement is completed, open valve to connect connecting pipe, frozen pipeline system can be restored normal operation, convenient and fast, convenient for construction site use.In addition, frozen pipe is arranged in the side of cover plate, can avoid cover plate influence frozen pipe subsequent maintenance and replacement. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 The utility model provides a kind of for open cut tunnel's frozen pipeline system's planar arrangement drawing;
[0023] Figure 2 The utility model provides a kind of for open cut tunnel's frozen pipeline system's elevation view;
[0024] Figure 3 For Figure 2 Enlarged view in A of middle.
[0025] Wherein:
[0026] 100, cover plate;200, concrete layer;300, external pipeline;
[0027] 1, frozen pipe;2, connecting pipe;3, connecting assembly;31, fastener;32, first connecting piece;33, second connecting piece;34, fish scale buckle;4, valve;5, water stop ring plate. DETAILED DESCRIPTION
[0028] It needs to be understood that, in the description of the utility model, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.
[0029] It should be noted that in the description of the utility model, unless there are definite provisions and limitations, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixed connection, but also can be detachable connection, or integral connection, can be mechanical connection, but also can be electrical connection, can be directly connected, but also through the intermediate medium indirectly connected, can be two elements inside the communication. For ordinary skilled in the art, the above terms can be understood by the specific meaning in the utility model through specific circumstances.
[0030] The technical scheme of the utility model will be further illustrated below by specific embodiments in combination with the drawings.
[0031] As Figures 1 to 3 Indicated, the utility model provides a kind of freeze pipe system for open cut tunnel, can improve the efficiency of freeze pipe 1 replacement in open cut tunnel, reduce the cost of freeze pipe 1 replacement, also can guarantee the safety of construction site in freeze pipe 1 replacement process.
[0032] Referring to Figure 1 And Figure 2 , the portal of open cut tunnel is provided with cover plate 100, and concrete layer 200 is arranged in open cut tunnel, and the freeze pipe system includes freeze pipe 1, connecting pipe 2, connecting assembly 3 and valve 4, freeze pipe 1 is set to one side of cover plate 100, for forming freeze wall in open cut tunnel, and concrete layer 200 is vertically spaced apart from cover plate 100, and working space is formed between concrete layer 200 and cover plate 100, the upper end of freeze pipe 1 is located above cover plate 100, and the lower end of freeze pipe 1 extends into working space;Connecting pipe 2 is arranged in concrete layer 200, and the upper end of connecting pipe 2 is located in working space, and connecting assembly 3 is located in working space, and the upper end of connecting pipe 2 is detachably connected with the lower end of freeze pipe 1 through connecting assembly 3;Valve 4 is arranged in connecting pipe 2, for cutting off or connecting connecting pipe 2.
[0033] The refrigeration pipeline system for the open cut tunnel provided by the embodiment can cut off the connection pipe 2 by closing the valve 4 when the refrigeration pipe 1 needs to be replaced, so that no liquid can pass through the connection pipe 2 and the refrigeration pipe 1, thereby avoiding the leakage phenomenon caused by the liquid flowing out of the connection pipe 2 during the replacement of the refrigeration pipe 1, and ensuring the safety of the construction site during the replacement of the refrigeration pipe 1; after the valve 4 is closed, the connection pipe 2 can be separated from the refrigeration pipe 1 by using the connection assembly 3 in the working space, and the refrigeration pipe 1 after replacement can be connected with the connection pipe 2 by using the connection assembly 3, so that the connection pipe 2 arranged in the concrete layer 200 does not need to be replaced, the efficiency of the replacement of the refrigeration pipe 1 is improved, and the cost of the replacement of the refrigeration pipe 1 is reduced; after the replacement of the refrigeration pipe 1 is completed, the valve 4 can be opened to connect the connection pipe 2, so that the normal operation of the refrigeration pipeline system can be restored, and the operation is convenient and fast and is convenient for use at the construction site. In addition, the refrigeration pipe 1 is arranged on one side of the cover plate 100, so that the cover plate 100 can not affect the subsequent maintenance and replacement of the refrigeration pipe 1.
[0034] Specifically, during the open cut tunnel receiving process, low-temperature liquid nitrogen or liquid carbon dioxide or other refrigerants are transported into the refrigeration pipe 1, the refrigerants are transported into the stratum through the refrigeration pipe 1 and the connection pipe 2, water in the stratum is gradually frozen, and a frozen wall is formed, so that the underground water is effectively isolated, the water gushing disaster is prevented, and the safety of the construction is ensured.
[0035] Further, the refrigeration pipe 1 is a flexible pipe, which has higher flexibility and bendability than a rigid pipe. Under the special geological and engineering conditions of the open cut tunnel, the flexible pipe can reduce the risk of leakage and damage caused by improper pipe connection or terrain changes, thereby improving the reliability and stability of the entire cooling pipeline system. Moreover, due to the material properties of the flexible pipe, the flexible pipe can better adapt to temperature changes and reduce deformation and damage of the refrigeration pipe 1 caused by temperature changes.
[0036] For example, referring to Figure 1 The cover plate 100 is provided with a construction area with a width B of 400 mm between the ring beams of the open cut tunnel, so as to facilitate the replacement of the refrigeration pipe 1.
[0037] In the embodiment, referring to Figure 2 The valve 4 is a ball valve, and the opening and closing operation of the ball valve is simple, which can be completed by rotating 90 degrees, thereby saving the time for cutting off or connecting the connection pipe 2, reducing the operation difficulty and labor intensity, and being convenient for use at the construction site.
[0038] In the embodiment, referring to Figure 2 The connection pipe 2 is a steel pipe, which has high strength and is not prone to deformation in the concrete layer 200, thereby ensuring the stability of the operation of the cooling pipeline system. Specifically, the connection pipe 2 is a seamless steel pipe with a diameter of 48 mm, and 26 connection pipes 2 are arranged along the length direction of the cover plate 100.
[0039] Optionally, referring to Figure 2 , the refrigeration pipeline system further comprises a plurality of water-stopping ring plates 5 embedded in the concrete layer 200, the water-stopping ring plates 5 being sleeved on the connecting pipes 2 and fixedly connected with the connecting pipes 2. The water-stopping ring plates 5 are arranged to make the water flow pass through the concrete layer 200 from bottom to top and bypass the water-stopping ring plates 5, thereby forming a solid water-proof barrier, increasing the length of the seepage path and the resistance of the water flow, slowing down the water flow speed, and reducing the possibility of leakage.
[0040] Exemplarily, the water-stopping ring plates 5 are made of steel and welded with the connecting pipes 2.
[0041] Optionally, referring to Figure 2 , the connecting assembly 3 comprises a fastener 31, a first connecting piece 32 and a second connecting piece 33, the first connecting piece 32 being sealingly connected with the lower end of the refrigeration pipe 1, the second connecting piece 33 being sealingly connected with the upper end of the connecting pipe 2, and the first connecting piece 32 being detachably connected with the second connecting piece 33 through the fastener 31. When the refrigeration pipe 1 needs to be replaced, the first connecting piece 32 can be separated from the second connecting piece 33 by using the fastener 31, without the need to disassemble the entire refrigeration pipeline system, thereby improving the maintenance efficiency and convenience of the refrigeration pipeline system. Moreover, the sealing connection between the first connecting piece 32 and the refrigeration pipe 1 and the sealing connection between the second connecting piece 33 and the connecting pipe 2 can effectively prevent the leakage of the fluid in the refrigeration pipe 1 or the connecting pipe 2, thereby ensuring the safe operation of the refrigeration pipeline system when the refrigeration pipe 1 is connected with the connecting pipe 2.
[0042] In this embodiment, referring to Figure 2 and Figure 3 , a fish scale buckle 34 is arranged between the first connecting piece 32 and the refrigeration pipe 1 and between the second connecting piece 33 and the connecting pipe 2. The fish scale buckle 34 can increase the contact area and the friction force between the first connecting piece 32 and the refrigeration pipe 1 and between the second connecting piece 33 and the connecting pipe 2, so that the connection between the first connecting piece 32 and the refrigeration pipe 1 and between the second connecting piece 33 and the connecting pipe 2 is more firm and less likely to be loosened or detached, and the sealing property of the connection between the first connecting piece 32 and the refrigeration pipe 1 and between the second connecting piece 33 and the connecting pipe 2 is ensured, thereby effectively preventing the leakage of the liquid from the connection between the refrigeration pipe 1 and the connecting pipe 2 and ensuring the safety of the refrigeration pipeline system during use.
[0043] Exemplarily, the first connecting piece 32 and the second connecting piece 33 are both flanges, and the second connecting piece 33 is welded with the connecting pipe 2.
[0044] In the embodiment, the fastener 31 comprises a screw rod part and a fastening seat, the screw rod part is arranged through the first connecting piece 32 and the second connecting piece 33 and is threadedly connected with the fastening seat. The screw rod part is threadedly connected with the fastening seat, so that the first connecting piece 32 and the second connecting piece 33 have the characteristics of connection fastening and simple operation. Specifically, screwing the fastening seat can loosen the restriction on the screw rod part, so that the screw rod part can be separated from the first connecting piece 32 and the second connecting piece 33, so as to quickly separate the refrigeration pipe 1 from the connecting pipe 2; when connecting the refrigeration pipe 1 and the connecting pipe 2, the screw rod part is arranged through the first connecting piece 32 and the second connecting piece 33 in sequence and is threadedly connected with the fastening seat, so as to realize the quick connection of the connecting pipe 2 and the refrigeration pipe 1, and the operation is convenient and fast.
[0045] Further, one end of the screw rod part is provided with a limiting part, when the screw rod part is arranged through the first connecting piece 32 and the second connecting piece 33, the limiting part is located on the side of the first connecting piece 32 away from the fastening seat, so as to limit the movement of the screw rod part. The arrangement of the limiting part can prevent the screw rod part from being separated from the first connecting piece 32 and / or the second connecting piece 33, and the stability of the installation of the screw rod part between the first connecting piece 32 and the second connecting piece 33 is ensured.
[0046] Exemplarily, the screw rod part is a rod part of a bolt, the limiting part is a head part of the bolt, and the fastening seat is a nut.
[0047] Optionally, referring to Figure 2 , the open tunnel is provided with an external pipeline 300 such as a drainage pipe in addition to the refrigeration pipeline system, and the lower end of the connecting pipe 2 is detachably connected with the external pipeline 300, so as to facilitate the circulation and heat dissipation of the refrigerant in the open tunnel and ensure the normal operation of the refrigeration pipeline system; the detachable connection of the connecting pipe 2 and the external pipeline 300 not only facilitates the quick connection of the connecting pipe 2 and the external pipeline 300, but also facilitates the installation and dismounting of the connecting pipe 2, and the efficiency of construction is improved.
[0048] In the embodiment, referring to Figure 2 , the lower end of the connecting pipe 2 and the external pipeline 300 are also detachably connected through the connecting assembly 3, and the connection mode is the same as that of the connection of the connecting pipe 2 and the refrigeration pipe 1, which will not be described herein again.
[0049] Optionally, referring to Figure 2 , the upper end of the connecting pipe 2 is kept at a preset interval H from the top surface of the concrete layer 200, and the lower end of the connecting pipe 2 is kept at a preset interval H from the bottom surface of the concrete layer 200, so as to provide a certain space for the connection between the connecting pipe 2 and the refrigeration pipe 1 and the connection between the connecting pipe 2 and the external pipeline 300, and facilitate the on-site construction.
[0050] In the embodiment, referring to Figure 2 , the preset interval H is not less than 200 mm.
[0051] The process of replacing the refrigeration pipe 1 using the refrigeration pipe system provided by the embodiment is as follows:
[0052] Close the valve 4, screw the fastening seat to make the screw rod part disengage from the first connecting piece 32 and the second connecting piece 33; take out the refrigeration pipe 1 from the working space and separate the connecting pipe 2 from the first mounting piece; then, connect the new refrigeration pipe 1 with the first mounting piece and extend the new refrigeration pipe 1 into the working space; next, make the screw rod part pass through the first connecting piece 32 and the second connecting piece 33 in sequence and be screwed with the fastening seat; finally, open the valve 4 and the refrigeration pipe system resumes operation.
[0053] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. It should be understood by those skilled in the art that any changes or replacements within the technical scope disclosed by the present application can be easily thought of by any person skilled in the art, and all these changes or replacements fall within the protection scope and disclosure scope of the present application.
Claims
1. A frozen conduit system for a cut-and-cover tunnel, a cover (100) being provided at a portal of the cut-and-cover tunnel, a concrete layer (200) being provided in the cut-and-cover tunnel, characterized in that, The freezing pipeline system comprises: a freezing pipe (1) arranged on one side of the cover plate (100) and used for forming a freezing wall in the open cut tunnel, the concrete layer (200) being arranged vertically spaced apart from the cover plate (100), a working space being formed between the concrete layer (200) and the cover plate (100), the upper end of the freezing pipe (1) being located above the cover plate (100), and the lower end of the freezing pipe (1) extending into the working space; a connecting pipe (2) and a connecting assembly (3), the connecting pipe (2) being arranged in the concrete layer (200) and the upper end of the connecting pipe (2) being located in the working space, the connecting assembly (3) being arranged in the working space, and the upper end of the connecting pipe (2) being detachably connected with the lower end of the freezing pipe (1) through the connecting assembly (3); a valve (4) arranged in the connecting pipe (2) and used for cutting off or connecting the connecting pipe (2).
2. The freeze pipe system for a cut-and-cover tunnel according to claim 1, wherein The freezing pipeline system further comprises a plurality of water-stopping ring plates (5) embedded in the concrete layer (200), the water-stopping ring plates (5) being sleeved on the connecting pipe (2) and fixedly connected with the connecting pipe (2).
3. The refrigerant piping system for a cut-and-cover tunnel according to claim 2, characterized by, The water-stopping ring plates (5) are made of steel.
4. The refrigerant piping system for a cut-and-cover tunnel according to claim 1, wherein The connecting assembly (3) comprises a fastener (31), a first connecting piece (32) and a second connecting piece (33), the first connecting piece (32) being sealingly connected with the lower end of the freezing pipe (1), the second connecting piece (33) being sealingly connected with the upper end of the connecting pipe (2), and the first connecting piece (32) being detachably connected with the second connecting piece (33) through the fastener (31).
5. The refrigerant piping system for a cut-and-cover tunnel according to claim 4, wherein Fish scale buckles (34) are arranged between the first connecting piece (32) and the freezing pipe (1) and between the second connecting piece (33) and the connecting pipe (2).
6. The refrigerant piping system for a cut-and-cover tunnel according to claim 4, wherein The fastener (31) comprises a screw rod portion and a fastening seat, the screw rod portion being arranged in the first connecting piece (32) and the second connecting piece (33) and being threadedly connected with the fastening seat.
7. The refrigerant piping system for a cut-and-cover tunnel according to claim 6, wherein One end of the screw rod portion is provided with a limiting portion, when the screw rod portion is arranged in the first connecting piece (32) and the second connecting piece (33), the limiting portion is located on the side of the first connecting piece (32) away from the fastening seat, so as to limit the movement of the screw rod portion.
8. The freeze pipe system for a cut-and-cover tunnel according to any one of claims 1 to 7, characterized in that, The open cut tunnel is provided with an external pipeline (300) other than the freezing pipeline system, and the lower end of the connecting pipe (2) is detachably connected with the external pipeline (300).
9. A freeze pipe system for a cut-and-cover tunnel according to any one of claims 1-7, wherein, The upper end of the connecting pipe (2) is kept at a predetermined distance from the top surface of the concrete layer (200), and the lower end of the connecting pipe (2) is kept at a predetermined distance from the bottom surface of the concrete layer (200).
10. The freeze pipe system for a cut-and-cover tunnel according to any one of claims 1 to 7, characterized in that, The connecting pipe (2) is a seamless steel pipe.