Energy segment heat exchange pipeline pre-buried pouring structure and construction method thereof
By using a combined structure of casting mold and positioning base during the construction of energy pipe sheets, fixing the vertical section of the header and tying the capillary branch onto the steel cage, the problems of easy offset of the header interface and header bending are solved, and the molding pass rate and installation stability are improved.
Patent Information
- Application Number
- CN202510310208.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2025-05-30
AI Technical Summary
During the construction of energy pipe sheets, the lack of fixing devices on the interface of the inlet and outlet water header pipes, resulting in a position that is prone to offset during the pouring process, a low molding pass rate, and the vertical section of the header pipe and the steel cage cannot be fixed, which is prone to bending and interface displacement.
The combined structure of casting mold and positioning base is adopted. By opening installation holes on the mold and installing the positioning base, the vertical sections of the header and the rebar are fixed to ensure the stability of the header, and the installation is improved by tying the capillary branch pipe and heat exchange pipe to the steel cage.
The molding pass rate of the inlet and outlet water header interface is improved, the difficulty and cost of post-processing is reduced, the problems of bending and interface displacement of the vertical section of the header are avoided, and the stable installation and effective heat dissipation of the heat exchange pipeline are ensured.
Smart Images
Figure CN120061569A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of energy segment, and particularly to a pre-buried casting structure for a heat exchange pipeline of an energy segment and a construction method thereof. Background Art
[0002] Currently, the concept of an energy segment is to pre-bury a heat exchange pipeline in the segment, and then utilize the heat exchange between the segment and the surrounding constant-temperature rock and soil mass. In summer, the waste heat in the tunnel and the station can be dissipated to the surrounding rock and soil mass, while in winter, the heat of the rock and soil mass can be absorbed and heat can be provided to the surrounding buildings with heating requirements through a heat pump.
[0003] After the heat exchange pipeline is truncated and arranged in the precast segment, a connection space for the heat exchange pipe between the segments is reserved, and a reliable method is used to reconnect after the segment installation is completed. Utilizing the widely distributed tunnels below the urban surface as underground heat exchangers can not only solve the problem of waste heat retention during the operation of the subway, transfer the waste heat inside the tunnel to the rock and soil mass through the lining, but also extract waste heat and shallow geothermal energy for the heating of surrounding buildings in winter, and achieve the thermal balance of the rock and soil mass at the same time.
[0004] During the construction process, it is found that due to the lack of fixing devices for the water inlet and outlet headers, the position is extremely prone to deviation during the pouring process, and the qualified rate of the first forming is extremely low. After statistics, about 63% of the water inlet and outlet headers of the ground source heat pump segments are unqualified in the first forming, and the later treatment is difficult, costly, and the repair effect is poor. Problems such as the header interface being covered, damage around the interface, incorrect hole formation of the interface, and incorrect installation position are likely to occur. At the same time, the header material is PPR, and the vertical section of the header cannot be tied and fixed to the steel reinforcement cage. During the concrete pouring and vibration process, the vertical section of the header may be bent, resulting in the gradual upward movement of the bottom interface. Summary of the Invention
[0005] The present application provides a pre-buried casting structure for a heat exchange pipeline of an energy segment and a construction method thereof to solve the problems in the background art.
[0006] To solve the above technical problems, the present application provides a pre-buried casting structure for a heat exchange pipeline of an energy segment, including: a casting mold, a casting cavity is arranged on the outer surface of the casting mold; a plurality of installation holes are formed in the casting cavity, positioning bases are fixed on each of the plurality of installation holes, a steel reinforcement cage is installed in the casting cavity, a heat exchange pipeline is arranged on the outer surface of the steel reinforcement cage, the heat exchange pipeline includes a water inlet pipe inserted into any positioning base, a water outlet pipe inserted into another positioning base, and a header connected between the water inlet pipe and the water outlet pipe. A plurality of capillary branches are arranged at intervals in the length direction of the header, and the water inlet pipe, the water outlet pipe, the header, and the plurality of capillary branches are all attached to the steel reinforcement cage.
[0007] In some embodiments of the present application, the positioning base includes a rubber sleeve, a partition plate disposed within the rubber sleeve, and a mounting screw disposed on the partition plate. The mounting screw extends to one side of the partition plate, and an inner hexagon nut is fixedly connected to the other side of the partition plate and the mounting screw.
[0008] In some embodiments of the present application, multiple groups of capillary branch pipes are provided, and a casting port is provided between adjacent groups of capillary branch pipes. The casting port extends into the steel reinforcement cage.
[0009] In some embodiments of the present application, the capillary branch pipes are fixedly bound to the adjacent steel reinforcement cages, with no less than 8 binding points, and the distance between adjacent binding points is not greater than 400 mm.
[0010] In some embodiments of the present application, both the water inlet pipe and the water outlet pipe are fixedly bound to the adjacent steel reinforcement cages, and the binding of both the water inlet pipe and the water outlet pipe is not less than 4 times.
[0011] In some embodiments of the present application, the capillary branch pipes, the water inlet pipe, and the water outlet pipe are all fixedly bound using 0.7 mm galvanized steel wire.
[0012] In some embodiments of the present application, header interfaces are provided at the ends of the water inlet pipe and the water outlet pipe close to the positioning base. The outer diameter of the header interface is the same as the inner diameter of the rubber sleeve, and the header interface is inserted into the rubber sleeve.
[0013] In some embodiments of the present application, the materials of the water inlet pipe, the water outlet pipe, the header pipe, and the capillary branch pipes are all PPR.
[0014] In some embodiments of the present application, a construction method for a pre-embedded casting structure of an energy segment heat exchange pipeline is as follows: Step 1, during construction, first weld the steel bar framework, and then bind threaded steel bars to the vertical section of the header pipe; Step 2, open holes at the bottom of the mold, install the positioning base at the holes of the mold, and install the header interface at the end of the vertical section of the header pipe. Insert the header interface into the positioning base to connect the vertical section of the header pipe and the header pipe body; Step 3, use a traveling crane to cooperate with a special lifting tool to lift the steel reinforcement cage into the mold, and correctly install each embedded part of the steel reinforcement cage in the designated position according to specific requirements to ensure firm installation; Step 4, align the water inlet pipe and the water outlet pipe and insert them into the positioning base on the mold. After ensuring that the internal thread interface is immersed in the positioning base, start binding the header pipe and the steel reinforcement cage, and fixedly bind the header pipe and the capillary network to the adjacent steel bars of the steel reinforcement cage; Step 5, after the binding work is completed, check again whether the internal thread interfaces of the inlet and outlet header pipes are separated from the positioning base. After ensuring that the connection is in place, enter the casting chamber for casting. After reaching the demolding strength, the segment moves vertically upward under the action of a vacuum suction cup, and the header interface is separated from the positioning base to achieve demolding.
[0015] Compared with the prior art, the present invention has the following characteristics and beneficial effects: In the present invention, the inclined section of the header is tied and fixed with deformed steel bars to prevent the displacement of the interfaces of the header driven by the inclination of the vertical section of the header. Moreover, by opening installation holes in the casting mold and installing positioning bases on the installation holes, the positioning bases form good positioning for the ends of the header, which improves the installation speed to a certain extent, reduces the probability of unqualified first forming of the header interfaces, avoids later repair, reduces the prefabrication cost, and installs the heat exchange pipeline outside the steel reinforcement cage, making it closer to the surrounding rock and soil, with better heat dissipation and heat absorption effects, meeting the requirements of the industry for new technologies and new processes, having significant social benefits, and being able to produce beneficial effects when popularized and used. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic diagram of the overall structure of the casting structure according to an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the positioning base according to an embodiment of the present invention; Figure 3 is a top view schematic diagram of the positioning base according to an embodiment of the present invention; Figure 4 is a developed view schematic diagram of the segment according to an embodiment of the present invention; Figure 5 is a front view schematic diagram of the segment according to an embodiment of the present invention; Figure 6 is a sectional view schematic diagram of the segment according to an embodiment of the present invention.
[0017] In the figure, 100, casting mold; 200, positioning base; 210, rubber sleeve; 220, partition board; 230, installation screw; 240, hexagon socket head cap screw; 300, steel reinforcement cage; 400, heat exchange pipeline; 410, water inlet pipe; 420, water outlet pipe; 430, header; 440, capillary branch pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will further describe in detail the specific embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.
[0019] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.
[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.
[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0022] As Figures 1-6 shown, in some embodiments of this application, a pre-embedded casting structure for an energy segment heat exchange pipeline includes: a casting mold 100, a casting cavity is arranged on the outer surface of the casting mold 100; a plurality of mounting holes are formed in the casting cavity, positioning bases 200 are fixed on each of the plurality of mounting holes, a steel reinforcement cage 300 is installed in the casting cavity, a heat exchange pipeline 400 is arranged on the outer surface of the steel reinforcement cage 300, the heat exchange pipeline 400 includes a water inlet pipe 410 inserted into any one of the positioning bases 200, a water outlet pipe 420 inserted into another positioning base 200, and a header pipe 430 connected between the water inlet pipe 410 and the water outlet pipe 420. A plurality of capillary branch pipes 440 are arranged at intervals along the length direction of the header pipe 430. The water inlet pipe 410, the water outlet pipe 420, the header pipe 430, and the plurality of capillary branch pipes 440 are all attached to the steel reinforcement cage 300.
[0023] In some embodiments of this application, the positioning base 200 includes a rubber sleeve 210, a partition plate 220 arranged inside the rubber sleeve 210, and a mounting screw 230 arranged on the partition plate 220. The mounting screw 230 extends to one side of the partition plate 220, and an internal hexagonal nut 240 is fixedly connected to the other side of the partition plate 220 and the mounting screw 230.
[0024] In some embodiments of this application, the capillary branch pipes 440 are arranged in multiple groups, a casting port is arranged between adjacent groups of capillary branch pipes 440, and the casting port extends into the steel reinforcement cage 300.
[0025] In some embodiments of this application, the capillary branch pipes 440 are tied and fixed to the adjacent steel reinforcement cages 300, and the number of ties is not less than 8, and the distance between adjacent tying points is not greater than 400 mm.
[0026] In some embodiments of the present application, both the water inlet pipe 410 and the water outlet pipe 420 are tied and fixed to the adjacent steel reinforcement cage 300, and the bundling of the water inlet pipe 410 and the water outlet pipe 420 is not less than 4 places.
[0027] In some embodiments of the present application, the capillary branch pipes 440, the water inlet pipe 410, and the water outlet pipe 420 are all tied and fixed using 0.7mm galvanized steel wire drawing.
[0028] In some embodiments of the present application, header connectors are provided at the ends of the water inlet pipe 410 and the water outlet pipe 420 close to the positioning base 200. The outer diameter of the header connector is the same as the inner diameter of the rubber sleeve 210, and the header connector is inserted into the rubber sleeve 210.
[0029] In some embodiments of the present application, the materials of the water inlet pipe 410, the water outlet pipe 420, the header pipe 430, and the capillary branch pipes 440 are all PPR.
[0030] In some embodiments of the present application, a construction method for a pre-buried pouring structure of an energy segment heat exchange pipeline is as follows: Step 1, during construction, first weld the steel bar framework, and then tie threaded steel bars to the vertical section of the header pipe 430; Step 2, open holes at the bottom of the mold, install the positioning base 200 at the holes of the mold, and install a header connector at the end of the vertical section of the header pipe 430. Insert the header connector into the positioning base 200 to connect the vertical section of the header pipe 430 and the main body of the header pipe 430; Step 3, use a crane in cooperation with a special lifting tool to lift the steel reinforcement cage 300 into the mold, and correctly install each embedded part of the steel reinforcement cage 300 in the designated position according to specific requirements to ensure firm installation; Step 4, insert the water inlet pipe 410 and the water outlet pipe 420 into the positioning base 200 on the mold. After ensuring that the internal thread interface is immersed in the positioning base 200, start tying the header pipe 430 and the steel reinforcement cage 300, and tie and fix the header pipe 430 and the capillary network to the steel bars adjacent to the steel reinforcement cage 300; Step 5, after the tying work is completed, check again whether the internal thread interface of the inlet and outlet header pipes 430 is separated from the positioning base 200. After ensuring that the connection is in place, enter the pouring chamber for pouring. After reaching the demolding strength, the segment moves vertically upward under the action of a vacuum suction cup, and the header connector is separated from the positioning base 200 to achieve demolding.
[0031] In summary, the present invention relates to the technical field of energy segment, and discloses a pre-buried casting structure for a heat exchange pipeline of an energy segment and a construction method thereof, including: a casting mold, a casting cavity is arranged on the outer surface of the casting mold; a plurality of installation holes are formed in the casting cavity, positioning bases are fixed on each of the plurality of installation holes, a steel reinforcement cage is installed in the casting cavity, a heat exchange pipeline is arranged on the outer surface of the steel reinforcement cage, the heat exchange pipeline includes a water inlet pipe inserted into any one of the positioning bases, a water outlet pipe inserted into another positioning base, and a header pipe connected between the water inlet pipe and the water outlet pipe, a plurality of capillary branch pipes are arranged at intervals in the length direction of the header pipe, the water inlet pipe, the water outlet pipe, the header pipe and the plurality of capillary branch pipes are all attached to the steel reinforcement cage, which can improve the qualified rate of the first forming of the water inlet and outlet header pipe interfaces, reduce the difficulty of later treatment, save costs, and at the same time effectively avoid the bending of the vertical section of the header pipe and prevent the gradual upward movement of the bottom interface.
[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.
Claims
1. A pre-buried casting structure for heat exchange pipelines of energy pipe segments, comprising: A casting mold (100), wherein a casting cavity is provided on the outer surface of the casting mold (100); the casting cavity is characterized in that a plurality of mounting holes are opened on the casting cavity, and a positioning base (200) is fixed on each of the plurality of mounting holes; a steel cage (300) is installed in the casting cavity; a heat exchange pipeline (400) is provided on the outer surface of the steel cage (300); the heat exchange pipeline (400) comprises an inlet pipe (410) plugged into any one of the positioning bases (200), an outlet pipe (420) plugged into another positioning base (200), and a header (430) connected between the inlet pipe (410) and the outlet pipe (420); a plurality of capillary branches (440) are provided at intervals in the length direction of the header (430); the inlet pipe (410), the outlet pipe (420), the header (430) and the plurality of capillary branches (440) are all attached to the steel cage (300).
2. The pre-buried casting structure of the heat exchange pipeline of the energy pipe segment according to claim 1 is characterized in that: The positioning base (200) comprises a rubber sleeve (210), a partition (220) arranged in the rubber sleeve (210), and a mounting screw (230) arranged on the partition (220), wherein the mounting screw (230) extends to one side of the partition (220), and the other side of the partition (220) is fixedly connected to the mounting screw (230) with a hexagonal nut (240).
3. The pre-buried casting structure of energy pipe segment heat exchange pipeline according to claim 1 is characterized in that: The capillary branch tubes (440) are arranged in a plurality of groups, and pouring openings are arranged between adjacent groups of capillary branch tubes (440), and the pouring openings extend into the steel cage (300).
4. The pre-buried casting structure of heat exchange pipelines of energy pipe segments according to claim 1 is characterized in that: The capillary branch tube (440) is tied and fixed to the adjacent steel cage (300) at no less than 8 locations, and the distance between adjacent tying points is no more than 400 mm.
5. The pre-buried casting structure of energy pipe segment heat exchange pipeline according to claim 1 is characterized in that: The water inlet pipe (410) and the water outlet pipe (420) are both tied and fixed to the adjacent steel cage (300), and the water inlet pipe (410) and the water outlet pipe (420) are tied at no less than 4 locations.
6. The pre-buried casting structure of energy pipe segment heat exchange pipeline according to claim 1 is characterized in that: The capillary branch tube (440), the water inlet pipe (410) and the water outlet pipe (420) are all tied and fixed using 0.7 mm galvanized steel wire drawing.
7. The pre-buried casting structure of energy pipe segment heat exchange pipeline according to claim 1 is characterized in that: The ends of the water inlet pipe (410) and the water outlet pipe (420) close to the positioning base (200) are both provided with manifold interfaces, the outer diameter of the manifold interface is consistent with the inner diameter of the rubber sleeve (210), and the manifold interface is plugged into the rubber sleeve (210).
8. The pre-buried casting structure of energy pipe segment heat exchange pipeline according to claim 1 is characterized in that: The water inlet pipe (410), the water outlet pipe (420), the header (430) and the capillary branch tube (440) are all made of PPR.
9. A construction method for a pre-buried casting structure of a heat exchange pipeline of an energy pipe segment according to any one of claims 1 to 8, characterized in that: The specific steps of the method are as follows: Step 1, during construction, first weld the steel frame, and then tie the threaded steel bars on the vertical section of the header (430); Step 2: a hole is opened at the bottom of the mold, a positioning base (200) is installed at the opening of the mold, and a manifold interface is installed at the end of the vertical section of the manifold (430), and the manifold interface is inserted into the positioning base (200) to connect the vertical section of the manifold (430) and the main body of the manifold (430); Step 3: The steel cage (300) is hoisted into the mold by a crane in cooperation with a special hoist, and each embedded part of the steel cage (300) is correctly installed in the designated position according to specific requirements to ensure a firm installation; Step 4: Align the water inlet pipe (410) and the water outlet pipe (420) with the positioning base (200) on the mold and insert them. After ensuring that the inner thread interface is immersed in the positioning base (200), start tying the header (430) and the steel cage (300), and tie and fix the steel bars adjacent to the header (430) and the capillary network and the steel cage (300); Step 5. After the binding work is completed, check again whether the inlet and outlet water header interfaces are detached from the positioning base (200). After ensuring that the connection is in place, enter the pouring chamber for pouring. After reaching the demoulding strength, the pipe segment moves vertically upward under the action of the vacuum suction cup, and the header interface is detached from the positioning base (200) to achieve demoulding.