CN202470523U

CN202470523U - Device for acquiring heat from crust temperature-increasing layer

Info

Publication number: CN202470523U
Application number: CN 201220065546
Authority: CN
Inventors: 潘金龙
Original assignee: HANGZHOU GEOTECHNICAL ENGINEERING Co Ltd
Current assignee: GEOTECHNICAL TECHNOLOGY CO., LTD.
Priority date: 2012-02-27
Filing date: 2012-02-27
Publication date: 2012-10-03
Anticipated expiration: 2022-02-27

Abstract

The utility model relates to a device for acquiring heat from a crust temperature-increasing layer, and aims to provide a device which has the characteristics of high efficiency, long service life, simple structure, small investment and low operational cost. The technical scheme is that the device comprises a deep well formed by vertically drilling the crust through a drilling machine, and is characterized in that the deep well extends downwards to the crust temperature-increasing layer and has the depth of more than 800m; a U-shaped pipe which is made of a metal material and used for delivering water is arranged in the deep well and extends downwards to the bottom of the deep well, and the pipe orifices of a water inlet pipe and a water outlet pipe are formed on the ground; the water inlet pipe is provided with a check valve, and the pipe orifice of the water inlet pipe is communicated with a water pipe communicated with a pressure water source; the water outlet pipe is provided with a valve for switching; the bottom of the U-shaped pipe is provided with a water tank; and the bottoms of the water inlet pipe and the water outlet pipe are communicated with the water tank.

Description

A kind of device that obtains heat from earth's crust thermosphere

Technical field

The utility model relates to a kind of device that obtains heat from earth's crust thermosphere.

Background technology

A kind of energy that comes from earth interior of geothermal energy is mainly produced by the radioactive element decay, reach as high as several thousand degrees centigrade in the earth interior temperature, and geothermal energy circulates through phreatic depths and the magma intrusion at profound place is brought near the face of land.Each regional geothermal gradient of the whole world has nothing in common with each other, and in the Asia, approximately whenever increases dark 100 meters, 2.5 ℃ of increase in temperature; In North America, approximately whenever increase dark 100 meters, 2～2.5 ℃ of increase in temperature.Therefore geothermal energy is a kind of the have cleaning and reproducible energy, and its DEVELOPMENT PROSPECT is very wide.

Temperature in the earth's crust can be divided three layers: ground floor is outer thermosphere (troposphere), the main radiant heat energy that receives from the sun of this layer, and this layer temperature is with the height of latitude, the distribution of extra large land, season, round the clock with the variation of vegetation and different; The second layer is normal temperature layer (thermostat layer), and this layer is roughly local year-round average temperature for the lower interface (being the interface of inside and outside thermosphere) of outer thermosphere, this layer temperature; The 3rd layer is interior thermosphere (thermosphere), and this layer do not receive the influence of solar radiation, and secondly the main geothermal energy that receives from earth interior receives the heat energy that is transformed by other energy (like mechanical energy, chemical energy, gravitation energy, energy of rotation etc.).

The main mode of exploitation geothermal energy is to extract GEOTHERMAL WATER at present, is about to deep-well and beats to the rock stratum of underground deep layer, extracts deep phreatic water to the face of land and carries out heat exchange.In the resourceful area of GEOTHERMAL WATER, the exploitation GEOTHERMAL WATER is operating cost cheap (only when building, needing bigger input) not only, can be used for heat supply and generating, and can reduce the consumption of oil effectively, reduces carbon emission.

But this mining type also has weak point: in the many areas of China; Usually from cost consideration; Cooled GEOTHERMAL WATER is not recharged processing, directly is thrown into the face of land, and the GEOTHERMAL WATER that has a little Yu Wen can cause thermal pollution to soil; Owing to generally contain harmful substances such as fluorine, sulphur in the GEOTHERMAL WATER, also can cause chemical contamination simultaneously to soil; And do not have planning ground and exploit GEOTHERMAL WATER privately, can make groundwater level descend, cause the bottom surface sedimentation easily, cause geological disaster.

Summary of the invention

The purpose of the utility model is the deficiency that overcomes in the above-mentioned background technology, and a kind of device that from earth's crust thermosphere, obtains heat is provided, and this device should have efficient height, long service life and characteristics simple in structure, that investment is less, operating cost is lower.

The technical scheme that the utility model adopts is:

A kind ofly obtain the device of heat, comprise the deep-well that utilizes rig on the earth's crust, vertically to bore system and form from earth's crust thermosphere; It is characterized in that: said deep-well down extends to earth's crust thermosphere, and the degree of depth is greater than 800 meters; Also dispose metal material in the deep-well and process the U-shaped pipe that is beneficial to be used for water delivery, this U-shaped pipe down overhang to deep-well bottom and the mouth of pipe of the mouth of pipe of its water inlet pipe and outlet pipe all on ground; Check-valves is installed on the water inlet pipe, and the mouth of pipe of water inlet pipe is connected with the water pipe that is communicated with pressure water source; The valve that switch is used is installed on the outlet pipe.

The bottom of said U-shaped pipe is a water tank, and the bottom of said water inlet pipe and outlet pipe all is connected with this water tank.

The bottom mouth of pipe of said water inlet pipe is also past in water tank to extend below a segment distance, is beneficial to wash away de-sludging.

Said U-shaped pipe is a stainless steel tube.

The outlet pipe of said U-shaped pipe, overhead 800 meters to ground outer surfaces partly are covered with insulation material.

The degree of depth of said deep-well is 1000 meters to 3000 meters.

The operation principle of the utility model is: behind the water entering deep-well of water inlet pipe mouth of pipe input; Be transformed into hot water or steam is got back to ground through earth's crust thermosphere heating; Discharge and can utilize from the outlet pipe mouth of pipe: high steam can be used for steam turbine power generation, and hot water or steam all can be used for heating.

The beneficial effect of the utility model is: the utility model is as long as just can carry out heat exchange through the underground water in U-shaped tube wall and the thermosphere at water inlet pipe input water, thereby heat exchanger effectiveness is higher; When effectively utilizing geothermal energy, reducing the consumption of traditional energies such as oil coal; Thermal pollution and the chemical contamination of having avoided original mode (heat exchange is carried out on groundwater mining to the face of land) to produce also can be avoided polluted underground water source and the secondary pollution that the causes during end of groundwater recharge to ground; Can also avoid overdraft underground water to cause water level in addition and descend, prevent surface subsidence; Have environmental protection and energy-conservation characteristics.In addition, the apparatus structure that the utility model provides is simple, and manufacture difficulty is not high; Adopt corrosion resistant stainless pipeline, also have long service life, characteristics that operating cost is lower.

Description of drawings

Fig. 1 is the principle schematic of the utility model.

The specific embodiment

Further specify below in conjunction with embodiment shown in the drawings.

Earth's crust thermosphere heat-obtaining device as shown in Figure 1, that the method that adopts the utility model to provide is processed, main body are one to place the U-shaped pipe 2 of deep-well 1; This deep-well is the deep-well that gets out with km rig or other rig; The diameter of deep-well is generally about 20 centimetres to 120 centimetres; The degree of depth of deep-well is greater than 800 meters, usually at (cost performance of package unit is best during at 1000 meters to 2000 meters) about 1000 meters to 3000 meters.

Said U-shaped pipe generally should adopt the excellent and corrosion resistant metallic conduit (preferred stainless steel tube) of heat-conducting effect; The two ends pipeline of U-shaped pipe is respectively water inlet pipe 2-1 and outlet pipe 2-2, and (water tank is fixed with water inlet pipe and outlet pipe welding usually to be communicated with the water tank 2-5 of bottom respectively; The water tank size is confirmed as required).The water inlet pipe caliber is generally 10cm～30cm; And its bottom mouth of pipe 2-6 can be toward extending below some distances (this distance can be confirmed as required) in water tank; So that the flow velocity of water (arrow is represented water (flow) direction among the figure) is accelerated to obtain scouring effect, reduce the generation of incrustation scale.The outlet pipe caliber is generally greater than the water inlet pipe caliber, and the nozzle position of outlet pipe in water tank should be higher than water inlet pipe.Pressure water source (adopt water pump setting-out or directly connect running water) gets into deep-well after connecting water inlet pipe through pipeline, absorbs phreatic heat and returns ground and discharge from outlet pipe, can be used; Check-valves 3 is housed on the water inlet pipe of U-shaped pipe, refluxes from water inlet pipe to prevent hot water; Valve 7 is housed on the outlet pipe, is used to control water outlet.External application insulation material 4 on the outlet pipe of U-shaped pipe, this insulation material can be processed with asbestos or plastic foam material, and the heat that can reduce in the current uphill process runs off, generally from 6 part should apply this insulation material to ground apart from 800 meters on ground.In addition, also can in apart from the ground certain limit, between the borehole wall and U-shaped pipe, add hole plug 5 (conventional structure of deep-well) the U-shaped pipe is carried out closed reinforcement; The material of this hole plug uses insulation material (asbestos etc.) to process usually.

In addition, the U-shaped pipe need regularly carry out the scale removal processing; Usually can in water inlet pipe, import pickle, close outlet pipe and static a period of time; Behind the incrustation scale on water inlet pipe to be removed, the outlet pipe inwall, drain the water in the U-shaped pipe and suitably wash away the back.

Water in the U-shaped pipe becomes hot water after through the heating of earth's crust thermosphere or water vapour is discharged from outlet pipe, and high steam can be used for steam turbine power generation, and hot water and steam can be used for heating.

Claims

1. one kind is obtained the device of heat from earth's crust thermosphere, comprises the deep-well (1) that utilizes rig on the earth's crust, vertically to bore system and form; It is characterized in that: said deep-well down extends to earth's crust thermosphere, and the degree of depth is greater than 800 meters; Also dispose metal material in the deep-well and process the U-shaped pipe (2) that is beneficial to be used for water delivery, this U-shaped pipe down overhang to deep-well bottom and the mouth of pipe of the mouth of pipe of its water inlet pipe (2-1) and outlet pipe (2-2) all on ground; Check-valves (3) is installed on the water inlet pipe, and the mouth of pipe of water inlet pipe is connected with the water pipe that is communicated with pressure water source; The valve (7) that switch is used is installed on the outlet pipe.

2. according to claim 1ly a kind ofly obtain the device of heat from earth's crust thermosphere, the bottom that it is characterized in that said U-shaped pipe is a water tank (2-5), and the bottom of said water inlet pipe and outlet pipe all is connected with this water tank.

3. according to claim 2ly a kind ofly obtain the device of heat from earth's crust thermosphere, the bottom mouth of pipe (2-6) that it is characterized in that said water inlet pipe also in water tank toward extending below a segment distance, be beneficial to wash away de-sludging.

4. according to claim 2ly a kind ofly obtain the method for heat, it is characterized in that said U-shaped pipe is a stainless steel tube from earth's crust thermosphere.

5. according to claim 4ly a kind ofly obtain the device of heat from earth's crust thermosphere, it is characterized in that the outlet pipe of said U-shaped pipe, overhead 800 meters to ground outer surfaces partly are covered with insulation material (4).

6. according to claim 5ly a kind ofly obtain the device of heat from earth's crust thermosphere, the degree of depth that it is characterized in that said deep-well is 1000 meters to 3000 meters.