Deep-layer dry heat rock and medium-deep-layer geothermal source energy-gathering heat-exchange device
A technology of deep dry hot rock and heat exchange device, which is applied in the field of mid-deep geothermal source energy gathering heat exchange device and deep dry hot rock field, can solve the problems of high temperature heat exchange medium again radiating heat, and the heat extraction efficiency cannot be improved, so as to prevent jamming. The effect of drilling, reducing consumption, accumulating heat
Pending Publication Date: 2019-01-11
张雨
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[0004] In order to overcome the deficiencies of the existing technology and solve the technical problem that the high-temperature heat exchange medium after heat exchange dissipates heat again during the trans
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[0021] The present invention will be further described in detail below in conjunction with the drawings and embodiments.
[0022] Such as figure 1 The illustrated deep dry hot rock, mid-deep geothermal source energy gathering heat exchange device includes a heat extraction device and a sliding sleeve, wherein: the sliding sleeve is installed under the heat extraction device;
[0023] The heat extraction device includes an outer layer of heating sleeve, a central sleeve 2 and an insulation tube 4. The middle and upper positions of the outer layer of heating sleeve are set as wide mouth sections 11, and the outer layer of heating sleeve The lower part is provided with a narrow mouth section 12. The central sleeve 2 is installed in the narrow mouth section 12. An annular space is provided between the outer side wall of the central sleeve 2 and the inner side wall of the narrow mouth section 12. A screen hole 21 is provided on the side wall of the central sleeve 2 and the upper end of...
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Abstract
The invention discloses a deep-layer dry heat rock and medium-deep-layer geothermal source energy-gathering heat-exchange device, belongs to the technical field of geothermal energy heat-taking devices, and solves the problem of low heat-taking efficiency of high-temperature heat exchange medium after heat exchange and pressure building in a well during the lowering process of a sleeve. The solution is that the device comprises a heat-taking device and a sliding sleeve, wherein the sliding sleeve is arranged below the heat-taking device; the heat-taking device comprises an outer heat-taking sleeve, a central sleeve and an insulation pipe; the insulation pipe is arranged on the central sleeve; and the side wall of the insulation pipe is provided with a hollow interlayer; the sliding sleevecomprises an energy-gathering sleeve, a sliding sleeve housing and a sliding sleeve connecting seat for connecting the energy-gathering sleeve with the sliding sleeve housing; and the central part ofthe sliding sleeve housing is provided with a sliding sleeve center pipe, and a pressure relief plug is fixedly installed on the inner side wall of the sliding sleeve center pipe through a fixed connecting column. According to the invention, the heat exchange medium input into the heat exchange device is increased, heat dissipation again of the high-temperature heat exchange medium after heat exchange during the transportation process in the well is avoided, the heat exchange efficiency is improved, and the pressure building in the well during the lowering process is avoided through arrangement of the sliding sleeve.
Description
technical field [0001] The invention belongs to the technical field of geothermal energy heat extraction devices, in particular to an energy-gathering heat exchange device for deep-layer hot dry rocks and mid-deep geothermal sources. Background technique [0002] The average geothermal gradient in my country is about 3°C / 100 meters. That is, below the constant temperature layer, the ground temperature increases by about 3°C for every 100 meters downward. The ground is 1000-4000 meters underground, and the ground temperature is about 50-135 °C. The temperature of this part of deep geothermal resources is not enough to be developed and utilized for power generation, but it can become a stable heat source for building heating. [0003] At present, my country's utilization of mid-deep geothermal energy mainly adopts the method of directly exploiting mid-deep geothermal water for building heating, that is, digging geothermal wells in areas rich in geothermal water resources, ...
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Login to view more IPC IPC(8): F24T10/10
CPCY02E10/10
Inventor 张雨李靓鲜保安王盛昌
Owner 张雨
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