CN209855757U

CN209855757U - Novel hot dry rock geothermal exploitation device

Info

Publication number: CN209855757U
Application number: CN201920638498.2U
Authority: CN
Inventors: 郑学武; 谢泽容; 林时强
Original assignee: Shaanxi Xuewei Clean Energy Technology Co Ltd
Current assignee: Shaanxi Xuewei Clean Energy Technology Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2019-12-27
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a novel hot dry rock geothermol power exploitation device, including the geothermal well, the inside of geothermal well is provided with the tube, the inside of tube is provided with the steam pipe, the outside parcel of steam pipe has insulation material, be provided with the fixed plate between geothermal well and the tube, and be provided with buffer between two fixed plates, the upper end of steam pipe is connected with the output tube, the upside of tube is provided with the heat exchanger, the inside of heat exchanger is provided with the heat exchange tube, the outside of heat exchanger is provided with fixed section of thick bamboo, the upside of fixed section of thick bamboo is provided with clamping device. This novel hot dry rock geothermol power exploitation device has increased heat transfer area of contact through set up the shape heat exchange tube of returning in the heat exchanger, improves heat exchange efficiency, makes the difficult loss of vapor heat in the output tube through set up insulation material in the steam pipe outside, has improved exploitation efficiency.

Description

Novel hot dry rock geothermal exploitation device

Technical Field

The utility model relates to a geothermal exploitation technical field specifically is a novel dry heat rock geothermal exploitation device.

Background

Hot dry rock, also called enhanced geothermal system, or engineering geothermal system, is a high temperature rock mass generally having a temperature greater than 200 ℃, buried several kilometers deep, and having no fluid inside or only a small amount of underground fluid. The composition of the rock mass can vary greatly, and most of the rock mass is medium-acidity invaded rock from the middle generation, but also can be medium-new generation metamorphic rock, and even massive sedimentary rock with huge thickness. The hot dry rock is mainly used for extracting heat in the hot dry rock, so that the main industrial index of the hot dry rock is the temperature in the rock body, at present, a large amount of heat energy is in the hot dry rock, but the hot dry rock is difficult to mine and is easily influenced by factors such as the climate environment, the heat energy is easily lost in the collection process, and the mining efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel hot dry rock geothermol power exploitation device possesses the advantage that heat exchange efficiency is high, has solved the problem that traditional exploitation device mining efficiency is low.

In order to achieve the above object, the utility model provides a following technical scheme: a novel geothermal exploitation device for hot dry rock comprises a geothermal well, wherein a pipe shell is arranged in the geothermal well, a heat absorption pipe is arranged on the lower side of the pipe shell, a steam pipe is arranged in the pipe shell, a heat insulation material is wrapped on the outer side of the steam pipe, a fixing plate is arranged between the geothermal well and the pipe shell, a buffer device is arranged between the two fixing plates, the upper end of the steam pipe is connected with an output pipe, the upper side of the pipe shell is provided with a heat exchanger, a heat exchange tube is arranged in the heat exchanger, the heat exchange tube and the inner wall of the heat exchanger are provided with connecting blocks, one end of the heat exchange tube is connected with the output tube, the other end of the heat exchange tube is fixedly connected with a return tube, the middle part of the return pipe is provided with a pressure pump, the outer side of the heat exchanger is provided with a fixed cylinder, the upper side of the fixed cylinder is provided with a clamping device, and the two sides of the heat exchanger are respectively provided with a water inlet and a water outlet.

Preferably, rubber pads are arranged at the joints of the output pipe and the return pipe with the heat exchanger.

Preferably, a baffle is arranged on the outer side of the pipe shell.

Preferably, the clamping device comprises a support, a screw rod is connected to the inner thread of the support, a clamping block is fixedly connected to one end of the screw rod, a handle is fixedly connected to the other end of the screw rod, and a sponge plate is arranged on the outer side of the clamping block.

Preferably, the fixing plate comprises a plate body, and a pipe shell fixing hole is formed in the plate body.

Preferably, the buffering device comprises a limiting sleeve and a limiting rod, and a spring is arranged on the outer side of the limiting rod of the limiting sleeve.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up back shape heat exchange tube in the heat exchanger, increased heat transfer area of contact, improve heat exchange efficiency, make the difficult loss of vapor heat in the output tube through set up insulation material in the steam pipe outside, improved exploitation efficiency.

2. The utility model discloses a set up fixed cylinder in the heat exchanger outside, play the effect of protection heat exchanger, be provided with clamping device at fixed cylinder upside again, play the effect of fixed heat exchanger, made things convenient for the dismantlement and the installation of heat exchanger.

Drawings

Fig. 1 is a schematic structural view of a cross section of the present invention;

fig. 2 is a schematic structural view of the fixing plate of the present invention;

fig. 3 is a schematic structural view of the buffering device of the present invention;

fig. 4 is a schematic structural view of the clamping device of the present invention.

In the figure: the device comprises a geothermal well 1, a tube shell 2, a steam tube 3, a heat insulating material 4, a heat absorbing tube 5, a fixing plate 6, a plate body 61, a tube shell fixing hole 62, a buffer device 7, a limiting sleeve 71, a limiting rod 72, a spring 73, an output tube 8, a return tube 9, a pressure pump 10, a heat exchanger 11, a heat exchange tube 12, a connecting block 13, a water inlet 14, a water outlet 15, a fixing cylinder 16, a clamping device 17, a support 171, a clamping block 172, a screw 173, a handle 174, a sponge plate 175, a baffle 18 and a rubber pad 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a novel geothermal rock exploitation device comprises a geothermal well 1, wherein a tube shell 2 is arranged inside the geothermal well 1, a heat absorption tube 5 is arranged on the lower side of the tube shell 2, a steam tube 3 is arranged inside the tube shell 2, a thermal insulation material 4 is wrapped on the outer side of the steam tube 3, a fixing plate 6 is arranged between the geothermal well 1 and the tube shell 2, the fixing plate 6 comprises a plate body 61, tube shell fixing holes 62 are arranged inside the plate body 61, a buffer device 7 is arranged between the two fixing plates 6, an output tube 8 is connected to the upper end of the steam tube 3, a heat exchanger 11 is arranged on the upper side of the tube shell 2, a heat exchange tube 12 is arranged inside the heat exchanger 11, connecting blocks 13 are arranged on the inner walls of the heat exchange tube 12 and the heat exchanger 11, one end of the heat exchange tube 12 is connected with the output tube 8, the other end of the heat, the middle part of the return pipe 9 is provided with a pressure pump 10, the outside of the heat exchanger 11 is provided with a fixed cylinder 16, the upside of the fixed cylinder 16 is provided with a clamping device 17, the two sides of the heat exchanger 11 are respectively provided with a water inlet 14 and a water outlet 15, the outside of the tube shell 2 is provided with a baffle 18, the tube shell 2 is heated by the high temperature of the hot dry rock, and the lower side of the tube shell 2 is provided with a heat absorption pipe 5 to improve the heat absorption efficiency, so that the liquid water in the tube shell 2 is absorbed by the heat and changed into the gas state, the steam pipe 3 conveys the high temperature steam out, the high temperature steam is transmitted to the heat exchanger 12 through an output pipe 8, the heat is transmitted out through the heat exchanger 12, after the heat exchange, the high temperature steam is changed into the low temperature liquid water, the pressure pump 10 pumps the low temperature water back into the tube shell 2, thereby realizing the exploitation of terrestrial heat, the heat exchange for the hot dry rock is The heat is difficult for running off, has increased heat exchange efficiency, and tube 2 is provided with two, has increased the area of contact with the hot dry rock, has improved the rate of heating of water, has increased heat transfer rate.

Referring to fig. 3, the buffering device 7 includes a limiting sleeve 71 and a limiting rod 72, a spring 73 is disposed outside the limiting rod 72 of the limiting sleeve 71, the fixing plate 6 plays a role in protecting when the tube housing 2 is lowered, when the well wall of the heat exchange well protrudes, the spring 73 disposed between the two fixing plates 6 plays a role in buffering, the limiting sleeve 71 cooperates with the limiting rod 72 to limit the spring 73 to move only up and down, the buffering device 7 is protected, and normal use of the buffering device 7 is ensured.

Referring to fig. 4, the clamping device 17 includes a support 171, a screw 173 is connected to the support 171 through a thread, a clamping block 172 is fixedly connected to one end of the screw 173, a handle 174 is fixedly connected to the other end of the screw 173, a sponge plate 175 is disposed outside the clamping block 172, the handle 174 is rotated to make the screw 173 drive the clamping block 172 to move inward, and the four clamping devices 17 disposed on the upper side of the fixed cylinder 16 are used in cooperation to fix the heat exchanger 11.

In summary, the following steps: the novel geothermal exploitation device for the hot dry rock is characterized in that the high-temperature heat of the hot dry rock is absorbed through the tube shell 2, the heat absorption pipe 5 is arranged on the lower side of the tube shell 2, the heat absorption efficiency is improved, liquid water in the tube shell 2 absorbs heat and turns into a gas state, high-temperature steam is conveyed out through the steam pipe 3 and is transmitted to the heat exchanger 12 through the output pipe 8, heat is transmitted out through the heat exchanger 12, after heat exchange, the high-temperature steam turns back to low-temperature liquid water, the low-temperature water is pumped back into the tube shell 2 through the pressure pump 10, geothermal exploitation is achieved, heat exchange is conducted on the hot dry rock through water serving as a circulating medium, the heat exchange cost is reduced, the energy is more energy-saving and environment-friendly, the heat of steam in the output pipe is not easy to lose due to the heat of the steam in the output pipe by the heat insulation material 3 which, the heating rate of water is improved, the heat exchange rate is increased, the fixing barrel 16 is arranged outside the heat exchanger 11, the heat exchanger 11 is protected, the clamping device 17 is arranged on the upper side of the fixing barrel 16, the screw 173 drives the clamping block 172 to move inwards by rotating the handle 174, the four clamping devices 17 arranged on the upper side of the fixing barrel 16 are matched to use to fix the heat exchanger 11, and the heat exchanger 11 is convenient to detach and install.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel hot dry rock geothermol power exploitation device, includes geothermal well (1), its characterized in that: the geothermal well is characterized in that a pipe shell (2) is arranged in the geothermal well (1), a heat absorption pipe (5) is arranged on the lower side of the pipe shell (2), a steam pipe (3) is arranged in the pipe shell (2), a heat insulation material (4) is wrapped on the outer side of the steam pipe (3), a fixing plate (6) is arranged between the geothermal well (1) and the pipe shell (2), a buffer device (7) is arranged between the two fixing plates (6), an output pipe (8) is connected to the upper end of the steam pipe (3), a heat exchanger (11) is arranged on the upper side of the pipe shell (2), a heat exchange pipe (12) is arranged in the heat exchanger (11), a connecting block (13) is arranged on the inner walls of the heat exchange pipe (12) and the heat exchanger (11), one end of the heat exchange pipe (12) is connected with the output pipe (8), and, the middle part of the return pipe (9) is provided with a pressure pump (10), the outer side of the heat exchanger (11) is provided with a fixed cylinder (16), the upper side of the fixed cylinder (16) is provided with a clamping device (17), and the two sides of the heat exchanger (11) are respectively provided with a water inlet (14) and a water outlet (15).

2. The novel geothermal exploitation of hot dry rock of claim 1, wherein: rubber pads (19) are arranged at the joints of the output pipe (8), the return pipe (9) and the heat exchanger (11).

3. The novel geothermal exploitation of hot dry rock of claim 1, wherein: and a baffle (18) is arranged on the outer side of the pipe shell (2).

4. The novel geothermal exploitation of hot dry rock of claim 1, wherein: clamping device (17) is including support (171), the internal thread of support (171) is connected with screw rod (173), the one end fixedly connected with clamp splice (172) of screw rod (173), the other end fixedly connected with handle (174) of screw rod (173), the outside of clamp splice (172) is provided with sponge board (175).

5. The novel geothermal exploitation of hot dry rock of claim 1, wherein: the fixing plate (6) comprises a plate body (61), and a pipe shell fixing hole (62) is formed in the plate body (61).

6. The novel geothermal exploitation of hot dry rock of claim 1, wherein: the buffer device (7) comprises a limiting sleeve (71) and a limiting rod (72), and a spring (73) is arranged on the outer side of the limiting sleeve (71) and the limiting rod (72).