CN210801673U - Assembly structure of pipe-embedded heat exchanger in assembled underground diaphragm wall - Google Patents

Abstract

The utility model relates to an underground diaphragm wall pipe laying field, in particular to an assembly structure of a pipe laying heat exchanger in an assembly type underground diaphragm wall, which comprises a water inlet main pipe and a water return main pipe which are arranged in the assembly type underground diaphragm wall, and comprises a plurality of groups of soil facing surface U-shaped pipes and excavation surface U-shaped pipes which are respectively arranged on main ribs of the assembly type underground diaphragm wall close to a soil facing surface and an excavation surface, and two groups of U-shaped pipe-to-pipe series pipes are respectively arranged between the groups of the soil facing surface U-shaped pipes and the excavation surface U-shaped pipes, compared with the prior art that the temperature of the wall body of the underground diaphragm wall is obviously higher than the original temperature due to hydration heat in the ground source heat pump pipe laying in the cast-in-place concrete underground diaphragm wall, the utility model discloses a soil facing surface U-shaped pipe and the excavation surface U-shaped pipe are arranged in the assembly type underground diaphragm wall, the problem of hydration and heat release of cast-in-place concrete is solved, and the original ground temperature is not affected.

Description

Assembly structure of pipe-embedded heat exchanger in assembled underground diaphragm wall

Technical Field

The utility model relates to an underground continuous wall pipe laying field specifically is an assembly type underground continuous wall internal pipe laying heat exchanger package assembly.

Background

The ground source heat pump technology is a new building energy-saving technology which utilizes the property that the temperature of a stratum at a certain depth keeps constant all the year round, takes the ground as a heat source to provide heating in winter and cooling in summer for an upper building, and provides hot water supply all the year round. Since the ground temperature is much higher than the air temperature in winter and much lower than the air temperature in summer, the air conditioning system using the ground source heat pump has higher efficiency than the conventional air conditioner. The ground source heat pump technology also has the defects of high initial investment, mainly drilling cost, occupation of extra underground space and the like, and the application of the ground source heat pump technology is often limited to a certain extent when urban buildings are particularly dense.

The buried pipe technology in the underground continuous wall is a new development direction of the ground source heat pump technology, and is a new technology for directly binding the buried pipe on the main rib of the underground continuous wall to form a heat exchange member together with the underground continuous wall. The technology saves the drilling cost, has the advantages of good heat transfer effect, good stability and durability, no occupation of extra underground space and the like, and is suitable for medium and small-scale buildings when surrounding buildings are particularly dense.

The prior art has the following disadvantages: the hydration heat of cast-in-place concrete can make the wall temperature of the underground continuous wall obviously higher than the original ground temperature, and the temperature recovery speed is very slow. The temperature of the wall is higher, and the heat exchange effect under the working condition of heat dissipation in summer can be weakened. As studies on the system of buried pipes in the natural museum in shanghai indicate: when the ground source heat pump is put into use, the ground temperature at a position about 10m below a basement bottom plate is most affected by the hydration heat of water and mud, and the average rise of the ground temperature at a position 2.85m away from an underground continuous wall is 2.2 ℃; the heat exchange quantity of the buried pipe under the summer working condition is linearly reduced along with the rise of the initial ground temperature, and the heat exchange quantity of the buried pipe under the summer working condition is reduced by more than 5 percent when the ground temperature around the buried pipe rises by 1 ℃; the ground source heat pump system takes corresponding measures to the buried pipe within 13m from the underground continuous wall when the ground source heat pump system is put into use for the first time under the working condition in summer so as to ensure the efficient operation of the heat exchange system.

Disclosure of Invention

In order to solve the problem, the utility model provides an assembly type underground continuous wall internal heat exchanger package assembly.

The utility model provides an embedded pipe heat exchanger package assembly in assembled underground continuous wall, is including setting up the water inlet main pipe and the return water main pipe in prefabricated assembled underground continuous wall, still includes that a plurality of groups set up respectively and are close to the soil facing surface U type pipe and the excavation face U type pipe on the main muscle of soil facing surface and excavation face, every group soil facing surface U type pipe and excavation face U type pipe between all have to set up two sets of U type intertube and establish ties the pipe.

The soil facing surface U-shaped pipe, the excavation surface U-shaped pipe and the two groups of U-shaped pipes are connected in series to form a W-shaped buried pipe.

The soil facing surface U-shaped pipe, the excavation surface U-shaped pipe and the series pipes among the U-shaped pipes are all PE100 type polyethylene pipes with the outer diameter of 25mm and the heat conductivity coefficient of 0.42W/m.DEG.C.

The distance between the branch pipes of the groups of soil-facing surface U-shaped pipes is 750mm, and the distance between the branch pipes of the groups of excavation surface U-shaped pipes is 150 mm.

A plurality of groups of W-shaped buried pipes are connected with a water inlet main pipe and a water return main pipe in parallel to form a loop.

The utility model has the advantages that: compare in current cast in situ concrete underground continuous wall internal ground source heat pump buried pipe because the heat of hydration can make underground continuous wall's wall body temperature obviously be higher than original ground temperature, weaken the heat transfer effect of heat dissipation operating mode in summer, the utility model discloses a to meet the setting of soil face U type pipe and excavation face U type pipe in prefabricated assembled underground continuous wall, assemble prefabricated underground continuous wall at the scene, do not have the exothermic problem of hydration, can not cause the influence to original ground temperature, because the ground source heat pump buried pipe is implanted when assembled underground continuous wall is prefabricated, need not transfer along with the reinforcing bar when the underground continuous wall is pour to the construction site together, simplified construction operation flow, installation quality is guaranteed.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the front perspective structure of the assembled underground diaphragm wall of the present invention;

FIG. 2 is a schematic view of the top perspective structure of the assembled underground diaphragm wall of the present invention;

FIG. 3 is a schematic view of the vertical structure of the W-shaped buried pipe in the single-unit assembly type underground continuous wall

Fig. 4 is a schematic view of the top-view three-dimensional structure of the W-shaped buried pipe in the single-unit assembled underground continuous wall of the present invention.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, and the utility model is further explained below.

As shown in fig. 1 to 4, an assembly structure of a pipe-embedded heat exchanger in an assembly type underground continuous wall comprises a water inlet main pipe 5 and a water return main pipe 4 which are arranged in a prefabricated assembly type underground continuous wall 6, and further comprises a plurality of groups of soil-facing surface U-shaped pipes 1 and excavation surface U-shaped pipes 2 which are respectively arranged on main ribs of the prefabricated assembly type underground continuous wall 6 close to a soil-facing surface and an excavation surface, and two groups of U-shaped inter-pipe series pipes 3 are arranged between each group of soil-facing surface U-shaped pipes 1 and each group of excavation surface U-shaped pipes 2.

The soil facing surface U-shaped pipe 1, the excavation surface U-shaped pipe 2 and the two groups of U-shaped pipes are connected in series through the series pipes 3 to form a W-shaped buried pipe.

Compare in current cast in situ concrete underground continuous wall ground source heat pump buried pipe because cast in situ concrete hydration heat can make underground continuous wall's wall body temperature, hydration heat influence scope soil body temperature obviously is higher than original ground temperature, weakens the heat transfer effect of heat dissipation operating mode in summer, the utility model discloses a with meeting the setting of soil side U type pipe 1 and excavation face U type pipe 2 in prefabricated assembled underground continuous wall 6, there is not the exothermic problem of hydration, can not cause the influence to original ground temperature, and because ground source heat pump buried pipe implants when prefabricated assembled underground continuous wall 6 is prefabricated, need not pour underground continuous wall at the construction site and transfer along with the reinforcing bar together, simplified construction operation flow, installation quality is guaranteed.

Make through W type buried pipe the utility model discloses can have better heat transfer effect, under experimental operating mode, W type buried pipe form can improve 25% ~ 40% than single U type buried pipe by the heat transfer volume under the same condition.

The soil facing surface U-shaped pipe 1, the excavation surface U-shaped pipe 2 and the serial pipes 3 among the U-shaped pipes are all PE100 type polyethylene pipes with the outer diameter of 25mm and the heat conductivity coefficient of 0.42W/m DEG C.

The distance between the branch pipes of the groups of the U-shaped pipes 1 facing the soil surface is 750mm, the distance between the branch pipes of the groups of the U-shaped pipes 2 facing the soil surface is 150mm, and the heat exchange effect can be improved by 11%.

A plurality of groups of W-shaped buried pipes are connected with a water inlet main pipe 5 and a water return main pipe 4 in parallel to form a loop.

4 groups of W-shaped buried pipes are arranged in each prefabricated underground continuous wall 6.

The W-shaped buried pipe, the water inlet main pipe 5 and the water return main pipe 4 are connected in parallel to form a loop, so that the problem that the heat exchange effect of the heat dissipation working condition in summer is weakened due to the fact that the wall temperature and the hydration heat influence range soil body temperature of the underground continuous wall are obviously higher than the original ground temperature due to hydration heat of cast-in-place concrete of the buried pipe heat exchanger structure in the cast-in-place concrete underground continuous wall is solved.

The utility model discloses a use method: when the prefabricated underground diaphragm wall 6 is prefabricated, a W-shaped buried pipe is implanted, and the water inlet main pipe 5 and the water return main pipe 4 are matched with the W-shaped buried pipe and connected in parallel to form a loop.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and what is described in the specification are the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are intended to fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides an embedded pipe heat exchanger package assembly in assembled underground continuous wall, is including setting up intaking main pipe (5) and return water main pipe (4) on prefabricated assembled underground continuous wall (6), its characterized in that: the prefabricated underground diaphragm wall is characterized by further comprising a plurality of groups of soil-facing surface U-shaped pipes (1) and excavation surface U-shaped pipes (2) which are arranged on the main ribs of the prefabricated underground diaphragm wall (6) close to the soil-facing surface and the excavation surface, and two groups of U-shaped inter-pipe series-connected pipes (3) are arranged between each group of soil-facing surface U-shaped pipes (1) and each group of excavation surface U-shaped pipes (2).

2. An assembled underground diaphragm wall inside pipe laying heat exchanger package according to claim 1 wherein: the soil facing surface U-shaped pipe (1), the excavation surface U-shaped pipe (2) and the two groups of U-shaped pipes are connected in series through the series pipes (3) to form a W-shaped buried pipe.

3. An assembled underground diaphragm wall inside pipe laying heat exchanger package according to claim 1 wherein: the soil facing surface U-shaped pipe (1), the excavation surface U-shaped pipe (2) and the serial pipes (3) among the U-shaped pipes are all PE100 type polyethylene pipes with the outer diameter of 25mm and the heat conductivity coefficient of 0.42W/m DEG C.

4. An assembled underground diaphragm wall inside pipe laying heat exchanger package according to claim 1 wherein: the distance between the branch pipes of the groups of soil-facing U-shaped pipes (1) is 750mm, and the distance between the branch pipes of the groups of excavation surface U-shaped pipes (2) is 150 mm.

5. An assembled underground diaphragm wall inside pipe laying heat exchanger package according to claim 1 wherein: a plurality of groups of W-shaped buried pipes are connected with the water inlet main pipe (5) and the water return main pipe (4) in parallel to form a loop.

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