阅读说明：本技术 一种中深层地热换热井的开放式钻孔壁装置 (Open type drilling wall device of middle-deep geothermal heat exchange well ) 是由 葛佳文 高玉胜 于 2020-07-30 设计创作，主要内容包括：本发明公开了一种中深层地热换热井的开放式钻孔壁装置,包括第一技术套管、第二技术套管、抵触机构、螺纹槽、按压机构、连杆、压杆和复位弹簧。本发明的有益效果是：将第一技术套管和第二技术套管螺纹连接后放入地热井内部,当放入到一定的位置后,通过转动第一技术套管,从而使第一技术套管对压杆进行抵触下滑并对抵触机构动作,使抵触机构与地热井内侧壁抵触,起到了支撑和稳固的作用,当反向转动第一技术套管时,第一技术套管向上滑动,从而使压杆在复位弹簧的作用下向上复位,并使连杆复位拉动抵触机构收缩,从而方便第一技术套管与第二技术套管抽出地热井。(The invention discloses an open type drilling wall device of a middle-deep geothermal heat exchange well, which comprises a first technical sleeve, a second technical sleeve, a butting mechanism, a thread groove, a pressing mechanism, a connecting rod, a pressing rod and a return spring. The invention has the beneficial effects that: put into geothermal well inside behind first technology sleeve pipe and the second technology sleeve pipe threaded connection, after putting into certain position, through rotating first technology sleeve pipe, thereby make first technology sleeve pipe contradict the gliding and to the mechanism action of touching the depression bar, make conflict mechanism and geothermal well inside wall conflict, the effect of supporting and stabilizing has been played, when the first technology sleeve pipe of reverse rotation, first technology sleeve pipe upwards slides, thereby make the depression bar upwards restore to the throne under reset spring's effect, and make the connecting rod restore to the throne and stimulate conflict mechanism shrink, thereby make things convenient for first technology sleeve pipe and second technology sleeve pipe to take out geothermal well.)

1. An open borehole wall device for a geothermal heat exchange well in a medium depth, comprising a first technical casing (1) and a second technical casing (2) mounted at the bottom of the first technical casing (1), characterized in that: the inner side of the top of the second technical casing (2) is provided with a thread groove (4) with an annular structure, the bottom of the first technical casing (1) extends to the inner side of the top of the second technical casing (2), and the first technical casing (1) is in threaded connection with the inner part of the second technical casing (2) through the thread groove (4); the top side wall of the second technical sleeve (2) is internally provided with a plurality of annularly distributed abutting mechanisms (3), pressing mechanisms (5) are respectively arranged between the abutting mechanisms (3) and the second technical sleeve (2), each pressing mechanism (5) comprises a connecting rod (51), a pressing rod (52) and a return spring (53), the plurality of pressing rods (52) are respectively arranged inside the side wall of the second technical sleeve (2), the return springs (53) are arranged on the outer sides of the plurality of pressing rods (52), and the plurality of pressing rods (52) are in sliding connection with the inside of the second technical sleeve (2) through the return springs (53); the tops of the plurality of pressure levers (52) penetrate through the second technical sleeve (2) and extend to the inside of the thread groove (4), the bottoms of the plurality of pressure levers (52) are rotatably connected with one end of the connecting rod (51), and the bottom of the connecting rod (51) is connected with the abutting mechanism (3).

2. An open borehole wall arrangement for a geothermal heat exchange well of a medium depth according to claim 1, wherein: conflict mechanism (3) include spout (31), the top lateral wall of second technique sleeve pipe (2) is equipped with a plurality ofly and is the annular distribution spout (31), just one side of spout (31) extends to the second technique sleeve pipe (2) lateral wall outside.

3. An open borehole wall arrangement for a geothermal heat exchange well of a medium depth according to claim 2, wherein: conflict mechanism (3) still including pushing away groove (34), it is a rectangle structure to push away groove (34), and is a plurality of push away groove (34) and locate respectively the inside of second technique sleeve pipe (2), just push away groove (34) with spout (31) intercommunication.

4. An open borehole wall arrangement for a geothermal heat exchange well of a medium depth according to claim 3, wherein: conflict mechanism (3) still include ejector pad (32), ejector pad (32) are the triangle-shaped structure, and are a plurality of ejector pad (32) respectively with spout (31) inside sliding connection, just the one end of ejector pad (32) extends to the inside of shallow groove (34).

5. An open bore wall arrangement for a geothermal heat exchange well at a medium depth as claimed in claim 4, wherein: conflict mechanism (3) still include guide slot (33), guide slot (33) are equipped with a plurality ofly, and are a plurality of guide slot (33) are located respectively the inboard of ejector pad (32), just guide slot (33) both ends extend to respectively the lateral wall of ejector pad (32) is outside.

6. An open bore wall arrangement for a geothermal heat exchange well at a medium depth as claimed in claim 5, wherein: conflict mechanism (3) still include expanding spring (35), expanding spring (35) are equipped with a plurality ofly, and are a plurality of expanding spring (35) install respectively in the one end lateral wall of ejector pad (32), the other end of expanding spring (35) respectively with the inside wall of shallow groove (34) is connected.

7. An open bore wall arrangement for a geothermal heat exchange well at a medium depth as claimed in claim 4, wherein: the pressing mechanism (5) further comprises fixing blocks (54), the two fixing blocks (54) are mounted at two ends of one side of the pushing block (32), one fixing block (54) is rotatably connected with the bottom of the connecting rod (51), the other fixing block (54) is rotatably connected with the top of the other connecting rod (51), and the bottom of the other connecting rod (51) is rotatably connected with the bottom side of the inner portion of the pushing groove (34).

Technical Field

The invention relates to an open type drilling wall device, in particular to an open type drilling wall device of a middle-deep geothermal heat exchange well, and belongs to the technical field of geothermal energy heat exchange.

Background

Geothermal energy is natural heat energy extracted from the earth's crust, from lava rock inside the earth, in the form of heat, which is energy that causes volcanic eruptions and earthquakes, and the temperature inside the earth is as high as 7000 c, and drops to 650 to 1200 c at depths of 80 to 100 miles. Through the flow of groundwater and the gushing of lava to the crust 1 to 5 km from the ground, the heat is transferred closer to the ground. The hot lava heats up the nearby ground water which eventually seeps out of the ground, using geothermal energy in the simplest and most cost-effective way of directly taking the heat source and extracting its energy.

For better heat exchange extraction of geothermal energy, according to the prior patent numbers: 201721379516.7 an open borehole wall device of a middle-deep geothermal heat exchange well can rapidly extract the deep energy of a locally stable heat reservoir in a stratum, can rapidly extract the heat of middle-deep geothermal water, however, the device is easily inserted into the geothermal well to cause a pipeline to shake, and meanwhile, when the device is collapsed in a rock stratum, the device can cause internal blockage, so that the efficiency of extracting geothermal water is reduced or the geothermal water cannot be extracted.

Disclosure of Invention

The present invention is directed to solve the above problems and to provide an open borehole wall device for a geothermal heat exchange well in a middle-deep layer, which can support and protect a geothermal water extraction pipe against a rock formation inside the geothermal well.

The invention achieves the aim through the following technical scheme, and the open type drilling wall device of the intermediate-deep geothermal heat exchange well comprises a first technical sleeve and a second technical sleeve arranged at the bottom of the first technical sleeve, wherein the inner side of the top of the second technical sleeve is provided with a thread groove with an annular structure, the bottom of the first technical sleeve extends to the inner side of the top of the second technical sleeve, and the first technical sleeve is in threaded connection with the inner part of the second technical sleeve through the thread groove; the top side wall of the second technical sleeve is internally provided with a plurality of annularly distributed abutting mechanisms, pressing mechanisms are respectively arranged between the abutting mechanisms and the second technical sleeve and comprise connecting rods, pressing rods and reset springs, the plurality of pressing rods are respectively arranged inside the side wall of the second technical sleeve, the reset springs are arranged outside the plurality of pressing rods, and the plurality of pressing rods are in sliding connection with the inside of the second technical sleeve through the reset springs; the tops of the plurality of pressure levers penetrate through the second technical sleeve and extend to the inside of the thread groove, and the bottoms of the plurality of pressure levers are connected with the abutting mechanism.

Preferably, for the convenience the ejector pad can slide, conflict mechanism includes the spout, second technique sheathed tube top lateral wall is equipped with a plurality ofly and is the annular distribution the spout, just one side of spout extends to the second technique sheathed tube lateral wall outside.

Preferably, for the convenience the connecting rod is right the ejector pad is contradicted, conflict mechanism still includes and pushes away the groove, it is the rectangle structure to push away the groove, and is a plurality of it locates respectively to push away the groove the sheathed tube inside of second technique, just push away the groove with the spout intercommunication.

Preferably, in order to be closely collided with the inner side of the geothermal well, the collision mechanism further comprises a push block, the push block is of a triangular structure, the push block is respectively connected with the inside of the sliding groove in a sliding mode, and one end of the push block extends to the inside of the push groove.

Preferably, in order to make things convenient for ground hot water can circulate and take out, conflict mechanism still includes the guide slot, the guide slot is equipped with a plurality ofly, and is a plurality of the guide slot is located respectively the inboard of ejector pad, just the guide slot both ends extend to respectively the lateral wall outside of ejector pad.

Preferably, in order to play the effect that resets, conflict mechanism still includes expanding spring, expanding spring is equipped with a plurality ofly, and is a plurality of expanding spring install respectively in the one end lateral wall of ejector pad, expanding spring's the other end respectively with the inside wall that pushes away the groove is connected.

Preferably, in order to be in the effect that the connecting rod extrusion is contradicted is right down the ejector pad removes to contradict fixedly to the rock stratum is inside, pressing means still includes the fixed block, two the fixed block install in one side both ends of ejector pad, and one of them the fixed block with the connecting rod bottom is rotated and is connected, another the fixed block with another the connecting rod top is rotated and is connected, and another the connecting rod bottom with push away the inside bottom side of groove and rotate and be connected.

The invention has the beneficial effects that: the invention is convenient for subsequent disassembly and transportation by connecting and installing the first technical sleeve pipes and the second technical sleeve pipes end to end in a threaded manner, then the first technical sleeve pipes and the second technical sleeve pipes are placed in the geothermal well, when the sleeve pipes are placed at a certain position, the first technical sleeve pipes slide downwards under the action of the thread grooves by rotating the first technical sleeve pipes, the first technical sleeve pipes resist and slide downwards the compression rods in the second technical sleeve pipes, the compression rods break away from the action of the return springs and slide downwards, and simultaneously the compression rods act on the abutting mechanism through the action of the connecting rods, so that the abutting mechanism is abutted against the inner side wall of the geothermal well, the first technical sleeve pipes and the second technical sleeve pipes are placed in the geothermal well stably and are not easy to shake, and simultaneously play a role of supporting the inner side wall of the geothermal well, and the collapse caused by the loosening of the inner soil layer is prevented, when the first technical sleeve rotates reversely, the first technical sleeve slides upwards, so that the pressure rod is reset upwards under the action of the reset spring, the connecting rod is reset, the abutting mechanism is pulled to contract, and the first technical sleeve and the second technical sleeve are conveniently drawn out of the geothermal well.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic view of a connection structure of the second technical socket and the interference mechanism shown in fig. 2;

fig. 4 is an enlarged view of the portion B shown in fig. 3.

In the figure: 1. the technical support comprises a first technical sleeve, a second technical sleeve, a third technical sleeve, a fourth technical sleeve, a fifth technical sleeve, a sixth technical sleeve, a fifth technical sleeve, a sixth technical sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an open borehole wall device for a geothermal heat exchange well at a middle and deep layer comprises a first technical casing 1 and a second technical casing 2 installed at the bottom of the first technical casing 1, wherein a thread groove 4 with a ring structure is formed on the inner side of the top of the second technical casing 2, the bottom of the first technical casing 1 extends to the inner side of the top of the second technical casing 2, and the first technical casing 1 is in threaded connection with the inner part of the second technical casing 2 through the thread groove 4; the inside of the top side wall of the second technical sleeve 2 is provided with a plurality of annularly distributed abutting mechanisms 3, pressing mechanisms 5 are respectively arranged between the abutting mechanisms 3 and the second technical sleeve 2, each pressing mechanism 5 comprises a connecting rod 51, a pressing rod 52 and a return spring 53, the plurality of pressing rods 52 are respectively arranged inside the side wall of the second technical sleeve 2, the return springs 53 are arranged outside the plurality of pressing rods 52, and the plurality of pressing rods 52 are slidably connected with the inside of the second technical sleeve 2 through the return springs 53; the tops of the plurality of pressing rods 52 extend through the second technical sleeve 2 to the inside of the thread groove 4, and the bottoms of the plurality of pressing rods 52 are connected with the interference mechanism 3.

As a technical optimization scheme of the present invention, the abutting mechanism 3 includes a sliding groove 31, a plurality of sliding grooves 31 are annularly distributed on a top side wall of the second technical sleeve 2, and one side of the sliding groove 31 extends to an outer side of a side wall of the second technical sleeve 2.

As a technical optimization scheme of the present invention, the abutting mechanism 3 further includes a pushing groove 34, the pushing groove 34 is a rectangular structure, the pushing grooves 34 are respectively disposed inside the second technical sleeve 2, and the pushing grooves 34 are communicated with the sliding groove 31.

As a technical optimization scheme of the present invention, the abutting mechanism 3 further includes a pushing block 32, the pushing block 32 is a triangular structure, the pushing blocks 32 are respectively connected with the inside of the sliding groove 31 in a sliding manner, and one end of each pushing block 32 extends to the inside of the corresponding pushing groove 34.

As a technical optimization scheme of the present invention, the abutting mechanism 3 further includes a plurality of guide grooves 33, the plurality of guide grooves 33 are respectively disposed on the inner side of the pushing block 32, and two ends of each guide groove 33 respectively extend to the outer portion of the side wall of the pushing block 32.

As a technical optimization scheme of the present invention, the abutting mechanism 3 further includes a plurality of extension springs 35, the plurality of extension springs 35 are respectively mounted on a side wall of one end of the push block 32, and the other ends of the extension springs 35 are respectively connected with an inner side wall of the push groove 34.

As a technical optimization scheme of the present invention, the pressing mechanism 5 further includes two fixing blocks 54, the two fixing blocks 54 are mounted at two ends of one side of the pushing block 32, one of the fixing blocks 54 is rotatably connected to the bottom of the connecting rod 51, the other fixing block 54 is rotatably connected to the top of the other connecting rod 51, and the bottom of the other connecting rod 51 is rotatably connected to the bottom side inside the pushing groove 34.

When the invention is used, firstly, a plurality of first technical sleeves 1 and a plurality of second technical sleeves 2 are connected and installed in a head-to-tail threaded manner, so that the subsequent disassembly and transportation are convenient, then the first technical sleeves 1 and the second technical sleeves 2 are placed into the geothermal well, after the technical sleeves are placed at a certain position, the first technical sleeves 1 slide downwards under the action of the thread grooves 4 by rotating the first technical sleeves 1, the first technical sleeves 1 slide downwards against the pressure bars 52 in the second technical sleeves 2, the pressure bars 52 slide downwards under the action of the return springs 53, meanwhile, the pressure bars 52 extrude and rotate the fixed block 54 under the action of the connecting rod 51, so that the push block 32 slides with the inside of the push groove 34 under the extrusion of the connecting rod 51, the push block 32 extends to the outside of the sliding groove 31 under the action of the extension springs 35 and abuts against the side wall in the geothermal well, thereby make first technique sleeve pipe 1 and second technique sleeve pipe 2 place stably difficult rocking in the inside of geothermal well, the effect of support has also been played to the geothermal well inside wall simultaneously, prevent that inside soil layer is not hard up to cause the collapse, be the triangle-shaped structure in ejector pad 32 one end, and ejector pad 32 is inside to be equipped with a plurality of guide slots 33, be favorable to geothermal water to carry the circulation, when first technique sleeve pipe 1 of antiport, first technique sleeve pipe 1 upwards slides, thereby make depression bar 52 upwards reset under reset spring 53's effect, and make connecting rod 51 restore to the throne pulling ejector pad 32 remove, make better taking in of ejector pad 32 advance inside the spout 31 deposit under the effect of expanding spring 35 simultaneously, thereby make things convenient for first technique sleeve pipe 1 and second technique sleeve pipe 2 to take out geothermal well.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.