CN219415270U

CN219415270U - Ground energy absorbing pre-buried device and building fresh air ground energy utilization system

Info

Publication number: CN219415270U
Application number: CN202320622050.8U
Authority: CN
Inventors: 张兆瑞; 王君; 典琪; 王国军
Original assignee: Shandong Zhimaide Intelligent Technology Co ltd
Current assignee: Shandong Zhimaide Intelligent Technology Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-07-25
Anticipated expiration: 2033-03-23

Abstract

The utility model discloses a geothermal energy absorbing pre-burying device and a building fresh air geothermal energy utilizing system. The ground energy absorbing pre-burying device comprises an outer sleeve and an inner core pipe, wherein the inner core pipe extends to the bottom of the outer sleeve, an air inlet chamber is formed between the inner wall of the outer sleeve pipe body and the outer wall of the inner core pipe body, an air outlet chamber is formed in the pipe cavity of the inner core pipe, and the air inlet chamber is isolated from the top of the air outlet chamber and is communicated with the bottom of the air outlet chamber; the opening at the upper end of the outer sleeve forms an air inlet communicated with the air inlet chamber, and the inner core pipe is provided with an air outlet communicated with the air outlet chamber. The ground energy absorbing pre-burying device has simple and ingenious structural design, construction is not influenced by geological conditions, the outer sleeve can conveniently extend into deep soil, larger pre-burying depth can be conveniently realized, air flow can flow to the deep soil to exchange heat with the soil through the pipe wall, the whole circulation flow path of the air flow is long, and the ground energy can be efficiently absorbed and utilized; the outer sleeve forms a multipoint friction steel pile or end bearing steel pile structure in the foundation, and simultaneously effectively plays a role in foundation anti-floating.

Description

Ground energy absorbing pre-buried device and building fresh air ground energy utilization system

Technical Field

The utility model belongs to the technical field of building energy-saving design, and particularly relates to a geothermal energy absorbing pre-buried device and a building fresh air geothermal energy utilization system.

Background

The energy consumption of the buildings in China accounts for more than 25% of the total energy consumption of the whole society, and half of the energy consumption of the buildings comes from heating, ventilation, air conditioning and related systems, so the energy consumption problem of the air conditioner becomes a hot problem in the current energy saving field of the buildings. Almost all buildings today use air conditioning systems for air conditioning and ventilation and refrigeration, and their relatively high energy consumption has become a major consumer of building energy consumption. In addition, the fresh air system of the air conditioner creates a good indoor environment and brings a certain damage to an external environment, and the problem of reducing the indoor temperature by using renewable energy sources becomes a fresh air hot spot.

According to the underground temperature change, the crust is often divided into the following 4 geothermal zones: (1) temperature daily change zone: the temperature of the belt is influenced by the air temperature every day, and the variation depth range of the belt is generally not more than 1m; (2) temperature annual change zone: the temperature of the belt is influenced by seasonal air temperature variation, and the depth range of the belt is generally not more than 20m; (3) constant temperature belt: at a depth below 20m, is not affected by seasonal air temperature changes; (4) geothermal warming zone: below the zone of constant temperature, the formation temperature increases with the depth of burial due to the influence of thermal forces within the earth. From the distribution of the ground temperature zone, the soil around the buried pipe which is pre-buried to a certain depth is used as a cold source to cool the fresh air in summer, and the soil around the buried pipe which is pre-buried to a certain depth is used as a heat source to preheat the fresh air in winter, so that the energy consumption of an air conditioner can be reduced.

The prior geothermal energy utilization mode is not suitable for a mature scheme of a high-rise building, for example, patent document with publication number of CN1415910A discloses a geothermal pipe heat supply air conditioning system and application thereof, and the geothermal pipe heat supply air conditioning system consists of a heat pump unit, a hot water preparation heat exchanger, a direct cooling heat exchanger, a hot water reservoir, a floor heating coil, an indoor heat exchanger and a geothermal pipe heat exchanger, wherein the components are connected through connecting pipelines, the underground part of the geothermal pipe heat exchanger adopts a buried U-shaped pipe structure, the above-ground part is respectively connected with the heat pump unit and the direct cooling heat exchanger through pipelines, and can form closed circulation pipelines which are respectively independent, a circulation working medium is filled in the pipes, and a circulation pump and a pipeline switch are arranged in the circulation pipelines. In this scheme, not only structural design is complicated, and construction cost is higher, owing to buried pipe heat exchanger underground part adopts buried U-shaped tube structure moreover, utilizes intraductal circulation working medium and soil to carry out the heat exchange, has decided in an objective way like this that U type pipe pre-buried degree of depth is limited, and soil can use in fact limitedly on the one hand, and on the other hand is used for a long time after, and intraductal circulation medium has and leaks the potential safety hazard, once circulation medium leaks, hardly restores the maintenance.

The patent document with publication number of CN107449075 discloses an underground buried pipe fresh air system, through the serpentine buried pipe in the underground soil, air is introduced into the underground buried pipe from an outdoor air inlet, and heat exchange is carried out between the pipe wall and the soil, so that the energy consumption is reduced, the operation cost is low, the system structure is simple, the fault maintenance is small, and the investment is small. However, in the scheme, the serpentine buried pipe is influenced by the structural design, the buried depth of the underground buried pipe is limited (the buried depth is 5 meters at most), the buried depth of the buried pipe is limited by the pit depth, and the heat exchange efficiency between air in the buried pipe and soil is low, so that the soil can be used limitedly; the snakelike pipe burying mode is after the construction deep digging earth pit, need add a large amount of tubular piles and thicken raft foundation to guarantee foundation strength, not only will greatly increase the construction degree of difficulty and building construction cost like this, the practicality is poor, receives geological conditions to influence greatly moreover, then can't promote the application.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the geothermal energy absorbing pre-burying device which has ingenious structural design, can conveniently realize larger pre-burying depth, is convenient for efficiently absorbing and utilizing deep soil energy and can effectively play a role in resisting foundation floating.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the ground energy absorbing pre-burying device comprises an outer sleeve with a closed lower end and an open upper end, an inner core tube is sleeved in the outer sleeve, a tube body of the inner core tube extends to the bottom of the outer sleeve, an air inlet chamber is formed between the inner wall of the tube body of the outer sleeve and the outer wall of the tube body of the inner core tube, an air outlet chamber is formed in the tube cavity of the inner core tube, the air inlet chamber is isolated from the top of the air outlet chamber, and the air inlet chamber is communicated with the bottom of the air outlet chamber; an opening at the upper end of the outer sleeve forms an air inlet communicated with the air inlet chamber, and an air permeable cover plate is arranged at the air inlet; the inner core pipe is provided with an air outlet communicated with the air outlet chamber.

As a preferable technical scheme, the outer peripheral side of the outer sleeve is provided with a plurality of heat conducting fins.

As a preferable technical scheme, the heat conducting fins are of a sheet-shaped or spiral design.

As a preferable technical scheme, the lower end of the outer sleeve is cone-shaped.

As a preferable technical scheme, the length of the outer sleeve is 8-25 m.

As an optimal technical scheme, a plurality of air inlets are formed in the lower pipe wall of the inner core pipe.

As an optimal technical scheme, the breathable cover plate is made of self-luminous materials.

The utility model also provides a system for utilizing the fresh air geothermal energy of the building, which comprises:

the ground energy absorbing pre-embedments are respectively buried in the foundation downwards along the longitudinal direction, and the ground energy absorbing pre-embedments are the ground energy absorbing pre-embedments; the top end of the ground energy absorbing pre-buried device extends to the basement of the building through the raft foundation, and the air inlet of the ground energy absorbing pre-buried device is communicated with the basement of the building;

the ground energy wind conveying branch pipes are correspondingly arranged with the ground energy absorbing pre-burying devices, one ends of the ground energy wind conveying branch pipes are connected with the air outlets on the corresponding ground energy absorbing pre-burying devices, the other ends of the ground energy wind conveying branch pipes are connected with the fans through the ground energy wind conveying main pipe, and the fans are connected with the fresh air conveying pipe.

As a preferable technical scheme, the geothermal energy absorbing pre-embedders are distributed in an array.

As a preferred technical solution, the geothermal energy absorbing pre-buried units are distributed in the underground area between the foundation structure columns of the building.

Due to the adoption of the technical scheme, the utility model has at least the following beneficial effects:

(1) The first innovative can absorb pre-buried ware to put forward, this can absorb pre-buried ware structural design ingenious, can prefabricate and form, and the metal outer tube can conveniently stretch into in the deep soil during the construction, not only can conveniently realize great pre-buried degree of depth, need not to dig in addition and establish the foundation ditch pre-buried, does not receive geological conditions influence, and the construction is simple and easy convenient.

(2) Because the ground energy absorbing pre-buried ware sets up the inlet chamber and go out the air chamber, and the top of inlet chamber and outlet chamber is isolated, the bottom is linked together, like this air gets into in the outer tube from the air inlet under the fan effect, and flow down along the inlet chamber between the body inner wall of outer tube and the body outer wall of inner core pipe earlier, flow to the bottom of outer tube after, get into the outlet chamber that inner core pipe cavity formed, flow from bottom to top along the outlet chamber of inner core pipe again, the whole circulation flow path length of air current, the air current can flow to deep soil department and carry out the heat exchange through pipe wall and soil, utilize deep soil can be as the cold source to cool down to the new trend in summer, utilize deep soil can preheat the new trend as the heat source in winter, can effectively reduce the energy consumption.

(3) The main structure of the ground energy absorbing pre-buried device only comprises an outer sleeve and an inner core pipe, the structure design is simple, the manufacturing cost is low, after the array arrangement is carried out during construction, the outer sleeve is used as a steel pile to be applied to a high pile foundation, a low pile foundation or a raft foundation to generate an end bearing steel pile or a friction steel pile, the foundation anti-floating function can be effectively played, and the anti-floating capacity of the pile raft foundation can be better improved due to the spiral heat conduction fin outer sleeve design. Meanwhile, condensed water generated by heat exchange between the deep soil and the soil through the pipe wall can be used for recycling and flushing toilets, watering flowers, vegetables and the like.

Drawings

The following drawings are only for purposes of illustration and explanation of the present utility model and are not intended to limit the scope of the utility model. Wherein:

FIG. 1 is a schematic diagram of a system for utilizing fresh air energy of a building in an embodiment of the utility model;

FIG. 2 is a schematic diagram of a front view of a ground absorptive pre-buried device according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2;

FIG. 4 is a schematic top view of a ground absorptive pre-buried device according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing the structure of the lower portion of the inner core tube in the embodiment of the present utility model;

FIG. 6 is a schematic airflow diagram of a geothermal energy absorptive pre-buried unit in accordance with an embodiment of the present utility model;

FIG. 7 is a schematic view of a structure in which spiral heat conducting fins are arranged on the outer peripheral side of an outer sleeve;

fig. 8 is a schematic view of a structure in which sheet-like heat conducting fins are provided on the outer peripheral side of an outer jacket tube;

FIG. 9 is a schematic cross-sectional view of the structure at B-B in FIG. 8;

FIG. 10 is a schematic diagram of a connection structure between a geothermal energy absorbing pre-buried unit and a geothermal energy air duct manifold in an embodiment of the present utility model.

Detailed Description

The utility model is further illustrated in the following, in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present utility model are described by way of illustration only. It is needless to say that the person skilled in the art realizes that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope.

As shown in fig. 1 and 10, the system for utilizing fresh air in a building comprises a plurality of underground energy absorbing pre-embedders 10 and an underground energy air delivery branch pipe 20, wherein the underground energy absorbing pre-embedders 10 are distributed in an array, are respectively buried in a foundation downwards along a longitudinal direction, have a buried depth of 8-25 m and are distributed in an underground area between foundation structure columns 70 of the building, and thus the underground energy absorbing pre-embedders 10 can be used as stress piles simultaneously to assist in the foundation anti-floating. The top end of the ground energy absorbing pre-buried device 10 penetrates through the raft foundation 30 to extend to the basement of the building, and the air inlet of the ground energy absorbing pre-buried device 10 is communicated with the basement of the building. The geothermal energy wind conveying branch pipe 20 is correspondingly arranged with the geothermal energy absorbing pre-burying device 10, one end of the geothermal energy wind conveying branch pipe 20 is connected with a gas outlet on the corresponding absorbing pre-burying device, the other end of the geothermal energy wind conveying branch pipe 20 is connected with the fan 50 through the geothermal energy wind conveying main pipe 40, the fan 50 is connected with the fresh air conveying pipe 60, and the fresh air conveying pipe is used for being connected with a fresh air system in a building.

Under the action of the fan 50, the air in the basement can exchange heat with the deep soil through the earth energy absorption pre-buried device 10, the deep soil energy is used as a cold source to cool the fresh air in summer, and the deep soil energy is used as a heat source to preheat the fresh air in winter, so that the energy consumption can be effectively reduced. Meanwhile, as the earth energy absorbing pre-embeders 10 are distributed in the foundation in an array mode to form a multi-point end bearing steel pile or friction steel pile structure, the foundation anti-floating effect can be effectively achieved, and therefore construction cost is reduced.

Referring to fig. 2 to 4, the geothermal energy absorbing pre-buried device 10 comprises an outer sleeve 11 with a closed lower end and an open upper end, an inner core tube 12 is sleeved in the outer sleeve 11, the inner core tube 12 is fixed with the outer sleeve 11 through a fixing piece 19, a tube body of the inner core tube 12 extends to the bottom of the outer sleeve 11, an air inlet chamber 13 is formed between the inner wall of the tube body of the outer sleeve 11 and the outer wall of the tube body of the inner core tube 12, a cavity of the inner core tube 12 forms an air outlet chamber 14, the air inlet chamber 13 is isolated from the top of the air outlet chamber 14, and the air inlet chamber 13 is communicated with the bottom of the air outlet chamber 14; an opening at the upper end of the outer sleeve 11 forms an air inlet 15 communicated with the air inlet chamber 13, an air-permeable cover plate 16 is arranged at the air inlet 15, and the air-permeable cover plate 16 is preferably made of self-luminous materials, so that illumination and indication effects can be achieved in the basement; the inner core pipe 12 is provided with an air outlet 17 communicated with the air outlet chamber 14, and the air outlet 17 of the inner core pipe 12 is connected with the geothermal energy air delivery branch pipe 20, so that a flow path is naturally formed by the outer sleeve 11 and the inner core pipe 12 from top to bottom and then from bottom to top.

Referring to fig. 2 and 6, clean air in a basement enters the outer sleeve 11 from the air inlet 15 through the ventilation cover plate 16, flows downwards from top to bottom along the air inlet chamber 13 between the inner wall of the pipe body of the outer sleeve 11 and the outer wall of the pipe body of the inner core pipe 12, flows to the bottom of the outer sleeve 11, enters the air outlet chamber 14 formed by the pipe cavity of the inner core pipe 12, flows upwards from bottom to top along the air outlet chamber 14 of the inner core pipe 12, has a long whole circulation flow path of air flow, can flow to deep soil to exchange heat with the soil through the pipe wall, cools fresh air by using deep soil energy as a cold source in summer, preheats fresh air by using deep soil energy as a heat source in winter, and can effectively reduce energy consumption.

Referring to fig. 5, in order to ensure the bottom connectivity of the air inlet chamber 13 and the air outlet chamber 14 to be safe and reliable, a plurality of air inlet holes 121 are formed on the lower pipe wall of the inner core pipe 12.

Referring to fig. 7 to 9, the outer circumference side of the outer sleeve 11 is preferably provided with a plurality of heat conducting fins 18, and the heat conducting fins 18 can increase the contact area with soil to transmit the ground energy, and can increase the overall strength of the collector to be used as friction steel piles or ends Cheng Gangzhuang, and simultaneously improve the foundation anti-floating effect. The heat conducting fins 18 may be of sheet or spiral design.

Referring to fig. 2, in order to conveniently absorb the sinking construction of the embedment device 10, the lower end of the outer sleeve 11 is preferably tapered. The length of the outer sleeve 11 is preferably 8 to 25 m.

The utility model provides the ground energy absorbing pre-burying device for the first time innovatively, the ground energy absorbing pre-burying device is ingenious in structural design, can be prefabricated, can be conveniently inserted into deep soil during construction, can realize large pre-burying depth, does not need to dig foundation pit for pre-burying, is not influenced by geological conditions, and is simple and convenient to construct.

The main structure of the ground energy absorbing pre-buried device only comprises the outer sleeve and the inner core pipe, the structure design is simple, the manufacturing cost is low, after the construction array is arranged, the outer sleeve forms a multipoint friction steel pile or an end bearing steel pile in the foundation, and meanwhile, the foundation anti-floating function is effectively achieved, and the ground energy absorbing pre-buried device is particularly suitable for popularization and application in high-rise energy-saving buildings.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model, and are intended to be within the scope of this utility model.

Claims

1. The pre-buried ware of geothermal energy absorption, its characterized in that: the inner core pipe is sleeved in the outer sleeve, the pipe body of the inner core pipe extends to the bottom of the outer sleeve, an air inlet chamber is formed between the inner wall of the pipe body of the outer sleeve and the outer wall of the pipe body of the inner core pipe, an air outlet chamber is formed in the pipe cavity of the inner core pipe, the air inlet chamber is isolated from the top of the air outlet chamber, and the air inlet chamber is communicated with the bottom of the air outlet chamber; an opening at the upper end of the outer sleeve forms an air inlet communicated with the air inlet chamber, and an air permeable cover plate is arranged at the air inlet; the inner core pipe is provided with an air outlet communicated with the air outlet chamber.

2. The geothermal energy absorbing pre-buried unit according to claim 1, wherein: and the outer peripheral side of the outer sleeve is provided with heat conducting fins.

3. The geothermal energy absorbing pre-buried unit according to claim 2, wherein: the heat conducting fins are of a sheet-shaped or spiral design.

4. The geothermal energy absorbing pre-buried unit according to claim 1, wherein: the lower end of the outer sleeve is conical.

5. The geothermal energy absorbing pre-buried unit according to claim 1, wherein: the length of the outer sleeve is 8-25 m.

6. The geothermal energy absorbing pre-buried unit according to claim 1, wherein: the lower pipe wall of the inner core pipe is provided with a plurality of air inlets.

7. The geothermal energy absorbing pre-buried unit according to claim 1, wherein: the breathable cover plate is made of self-luminous materials.

8. Building new trend ground can utilize system, its characterized in that includes:

a plurality of geothermal energy absorbing pre-embedments, each of which is buried in a foundation downward in a longitudinal direction, the geothermal energy absorbing pre-embedments being according to any one of claims 1 to 7; the top end of the ground energy absorbing pre-buried device extends to the basement of the building through the raft foundation, and the air inlet of the ground energy absorbing pre-buried device is communicated with the basement of the building;

9. The building fresh air geothermal energy utilization system of claim 8, wherein: the geothermal energy absorbing pre-embedders are distributed in an array.

10. The building fresh air geothermal energy utilization system of claim 9, wherein: the geothermal energy absorbing pre-buried devices are distributed in the underground area between foundation structure columns of the building.