Deep ground temperature monitoring equipment in geothermal well

Abstract

The utility model belongs to the technical field of geothermal well ground temperature monitoring, and particularly relates to geothermal well middle-deep ground temperature monitoring equipment, which comprises a lifting frame, the lifting frame is divided into two semi-circle parts, and a pull rod and a space for mounting a torsion spring are respectively mounted at the joint of the two semi-circle parts; a plurality of sliding wheels are installed in the two semicircular parts of the lifting frame respectively, and after the lifting frame is placed in the geothermal well and unfolded, the sliding wheels on the outer side of the lifting frame make contact with the well wall. And a detector is arranged on the lower surface of the lifting frame. After the lifting frame is arranged in the geothermal well, a space for other equipment to enter can be reserved in the center of the lifting frame, so that the lifting frame cannot influence the use of other equipment; furthermore, by arranging a sliding wheel which can only rotate in one direction, the lifting frame can still make close contact with the well wall after the pull rod is put down, the lifting frame is prevented from shaking and colliding with the well wall, and the lifting frame can also be prevented from sliding downwards.

Description

Technical Field

[0001] The utility model belongs to the technical field of geothermal well ground temperature monitoring, in particular to a deep ground temperature monitoring device in a geothermal well. Background Art

[0002] Geothermal wells refer to methods and devices for generating electricity from geothermal energy at depths of approximately 3,500 meters or from hot spring water with a temperature greater than 30°C. Geothermal energy is categorized as high, medium, and low temperatures. High-temperature geothermal energy is above 150°C and exists in the form of steam; medium-temperature geothermal energy exists in the form of a water-steam mixture between 90°C and 150°C; and low-temperature geothermal energy exists in the form of warm water, lukewarm water, or hot water, which is above 25°C and below 90°C. Prior art requires the use of temperature measurement devices to monitor the internal temperature of geothermal wells during exploration and detection.

[0003] However, the existing temperature measuring mechanism has the following shortcomings after it goes deep into the geothermal well: it is easy to shake and collide with the inner wall of the geothermal well, causing damage to the temperature measuring mechanism; and after the temperature measuring mechanism is inside the geothermal well, the empty area cannot be determined, which causes certain obstacles to the entry of other equipment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a deep ground temperature monitoring device for geothermal wells, and the technical solutions adopted are as follows:

[0005] A device for monitoring deep geothermal temperatures in a geothermal well comprises a lifting frame, the lifting frame being composed of two semicircular parts, with a pull rod and a space for installing a torsion spring respectively installed at the connection of the two semicircles; a plurality of sliding wheels are respectively installed in the two semicircular parts of the lifting frame, and after the lifting frame is placed in the geothermal well and unfolded, the sliding wheels on the outside of the lifting frame contact the well wall; a detector is provided on the lower surface of the lifting frame.

[0006] Furthermore, the detectors are temperature detectors and height detectors, which are respectively placed under the two semicircular parts of the lifting frame, and can respectively measure the height and temperature information in the geothermal well.

[0007] Furthermore, a stopper is provided on the inner side of the lifting frame and on one side of the pull rod, and a rotating block is provided on the outer side of the pull rod, which can prevent the pull ring from rotating excessively to the bottom of the lifting frame and make the pull ring rotate to the maximum parallel to the lifting frame.

[0008] Furthermore, in the retracted state, a limit clamp is installed on one side of the lifting frame, and a pull ring is provided on one side of the limit clamp. Through the limit clamp, the lifting frame can be in the retracted state when it just penetrates into the geothermal well.

[0009] Furthermore, the sliding wheel is a one-way rotating wheel, which can only rotate when the lifting frame is ascending, and will not rotate when the lifting frame is descending.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] After the lifting frame used in the utility model is placed in the geothermal well, a space for other equipment to enter can be reserved at the center of the lifting frame, so that the use of other equipment will not be affected; further, by providing a sliding wheel that can only rotate in one direction, the lifting frame can still be in close contact with the well wall after the pull rod is lowered, preventing the lifting frame from shaking and colliding with the well wall, and also preventing the lifting frame from sliding down.

[0012] The lifting frame of the utility model is composed of two parts, with a torsion spring in the middle, so that the lifting frame has the function of folding and rotating downward. When the lifting frame is rising, if it needs to be blocked, the two semicircular parts of the lifting frame can rotate downward and inward with the connection point between the pull rod and the lifting frame as the center of the circle to pass through the obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the utility model's lifting frame in a retracted state;

[0015] Figure 3 This is a schematic diagram of the utility model lifting frame in the unfolded state;

[0016] Figure 4 This is a schematic diagram of the utility model after the pull rod is lowered;

[0017] Figure 5 This is a schematic diagram of the position structure of the torsion spring of the utility model;

[0018] Figure 6 This is a schematic structural diagram of the limit clamp of the utility model;

[0019] Figure 7 This utility model Figure 4 Schematic diagram of the enlarged structure of A in the figure.

[0020] In the picture:

[0021] 1-lifting frame, 11-stop block, 2-pull rod, 21-rotating block, 3-torsion spring, 4-sliding wheel, 5-detector, 6-limiting clamp, 61-pull ring. DETAILED DESCRIPTION

[0022] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0023] As attached Figure 1-7 shown.

[0024] A deep geothermal well geothermal monitoring device includes a lifting frame 1, which is divided into two semicircular parts, and a pull rod 2 is installed at the connection of the two semicircles. The pull rod 2 serves to connect the two semicircular parts, and a space for installing a torsion spring 3 is respectively provided at the connection of the two semicircles. The torsion spring 3 is installed in the space and is sleeved on the outside of the pull rod 2. Two torsion feet act on the two semicircular parts respectively. Under the action of the torsion spring, the two semicircular parts of the lifting frame 1 can be rotated open and supported in the geothermal well.

[0025] A plurality of sliding wheels 4 are respectively installed in the two semicircular parts of the lifting frame 1. After the lifting frame 1 is placed in the geothermal well and unfolded, the sliding wheels 4 on the outer side of the lifting frame 1 are in contact with the well wall.

[0026] A stopper 11 is provided on the inner side of the lifting frame 1 and on one side of the pull rod 2, and a rotary block 21 is provided on the outer side of the pull rod 2. When the pull rod 2 rotates, the stopper 11 can block the rotary block 21 and limit the rotation angle of the pull rod 2. After loosening the rope hanging in the pull rod 2, the pull rod 2 can be moved as shown in the attached figure. Figure 4 、 5 As shown, it is parallel to the lifting frame 1, so that a hollow space can be formed inside the lifting frame 1, which is convenient for other equipment to extend into the geothermal well.

[0027] In order to facilitate the placement of the lifting frame 1 into the geothermal well, the lifting frame 1 must be placed in a retracted state. In the retracted state, a limit clamp 6 is installed on one side of the lifting frame 1. A pull ring 61 is provided on one side of the limit clamp 6, and a rope is tied to the pull ring 61. After the lifting frame 1 penetrates into the geothermal well to the required height, the limit clamp 6 can be torn off from the lifting frame 1 through the rope. After the limit clamp 6 is torn off, the two semicircular parts of the lifting frame 1 are expanded under the action of the torsion spring 3, so that the sliding wheel 4 contacts the wall of the geothermal well, thereby completing the fixation.

[0028] Under the action of the torsion spring 3 , the sliding wheel 4 is in close contact with the well wall. The sliding wheel 4 is a one-way rotating wheel. Its one-way rotating structure can be equipped with a one-way bearing at the connection between the sliding wheel 4 and the lifting frame 1 .

[0029] The rotation direction of the sliding wheel 4 is based on the observation of the upper surface of the lifting frame 1, and the sliding wheel 4 can only rotate toward the outside; therefore, after the lifting frame 1 is unfolded and the sliding wheel 4 is in close contact with the wall of the geothermal well, even if the rope pulling the pull rod 2 is loosened, the sliding wheel 4 will not reverse and cause the lifting frame 1 to slide down.

[0030] Furthermore, on the basis above, after the lifting frame 1 is installed in place, the rope can be slightly loosened to lower the pull rod 2 and leave space in the center of the lifting frame 1.

[0031] When the lifting frame 1 is pulled upward, the sliding wheel 4 can rotate. When the two semicircular parts of the lifting frame 1 are blocked, the two semicircular parts of the lifting frame 1 can rotate downward and inward with the connection point between the pull rod 2 and the lifting frame 1 as the center of the circle to pass through the blocked part.

[0032] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the scope of protection of the utility model.

Claims

1. A deep ground temperature monitoring device for a geothermal well, comprising a lifting frame (1), characterized in that: The lifting frame (1) is composed of two semicircular parts, and a pull rod (2) is installed at the connection of the two semicircles and a space for installing a torsion spring (3) is opened; a plurality of sliding wheels (4) are installed in the two semicircular parts of the lifting frame (1), and after the lifting frame (1) is placed in the geothermal well and unfolded, the sliding wheels (4) on the outside of the lifting frame (1) contact the well wall; a detector (5) is provided on the lower surface of the lifting frame (1).

2. The deep ground temperature monitoring device for a geothermal well according to claim 1, characterized in that: The detectors (5) are temperature detectors and height detectors, which are respectively placed below the two semicircular parts of the lifting frame (1).

3. The deep ground temperature monitoring device for a geothermal well according to claim 1, characterized in that: A stopper (11) is provided on the inner side surface of the lifting frame (1) and located on one side of the pull rod (2), and a rotating block (21) is provided on the outer side of the pull rod (2).

4. The deep ground temperature monitoring device for a geothermal well according to claim 1, characterized in that: In the retracted state, a limit clamp (6) is installed on one side of the lifting frame (1), and a pull ring (61) is provided on one side of the limit clamp (6).

5. The deep ground temperature monitoring device for a geothermal well according to claim 1, characterized in that: The sliding wheel (4) is a one-way rotating wheel.

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