Geothermal well temperature measuring device

Abstract

The utility model discloses a geothermal well temperature measuring device which comprises a gravity plate, a motor, a floating shell, an adjusting cylinder, a threaded cylinder and a temperature measuring module, the output end of the motor is connected with a second rotating rod, and a first protruding block is arranged on the outer side of the second rotating rod; the adjusting cylinder is movably installed on the outer side of the second rotating rod, a second protruding block matched with the first protruding block is arranged on the inner side of the adjusting cylinder, a threaded rod is arranged at the lower end of the adjusting cylinder, the threaded cylinder is installed on the threaded rod, and the temperature measuring module is installed on the lower side of the threaded cylinder. The floating shell is mounted on the lower side of the gravity plate through the telescopic cover; and the floating shell is provided with an outlet matched with the temperature measuring module. In the falling process, the temperature measuring module is stored in the floating shell, so that the temperature measuring module is protected, and the temperature measuring module is prevented from being adhered with dust or damaged; when falling onto the liquid, the temperature measuring module can linearly reciprocate and extend out of the outlet to measure the temperature; and the accuracy and precision of geothermal well temperature measurement are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal well exploration, and in particular to a geothermal well temperature measuring device. Background Art

[0002] Geothermal wells are devices that extract energy from geothermal energy for heating or power generation. The depth of geothermal wells is generally between 50-200 meters, and the diameter of the well is between 20-30 centimeters. The geothermal energy in geothermal wells is a renewable resource. Among them, the medium-deep figure-eight geothermal wells can be used in radiators, floor heating and cooling and heating devices, without consuming limited fossil fuels, and can effectively save energy resources.

[0003] Geothermal wells need to be temperature measured before use. Temperature measurement of geothermal wells is helpful for understanding the underground thermal environment and evaluating the potential of geothermal resources. By analyzing data such as geothermal gradient, water temperature, and geothermal flow, the feasibility of geothermal energy utilization can be determined, providing a basis and decision-making support for geothermal energy development.

[0004] The traditional method of measuring temperature in geothermal wells uses the thermometer method. When measuring, the thermometer is sent into the well stem through the device for measurement, and then the thermometer is left in the well for a period of time until the temperature reaches a balanced state. Then the thermometer is taken out and the measurement results are recorded. Due to the depth of the geothermal well, when the thermometer is sent into the well stem through the device, it is easy to encounter obstacles. Especially when moving in the curved part of the eight-shaped geothermal well, on the one hand, the temperature measuring device will be subject to resistance, affecting the efficiency of the thermometer; on the other hand, there is a lot of dust inside the geothermal well. When the thermometer is exposed and moves along the geothermal well, dust is easy to adhere to the temperature measuring head of the thermometer, and even damage the thermometer, affecting the temperature measurement accuracy. Utility Model Content

[0005] In view of the above-mentioned technical problems existing in the prior art, the utility model provides a geothermal well temperature measuring device, which protects the temperature measuring module to prevent the temperature measuring module from being adhered to dust or being damaged.

[0006] The utility model discloses a geothermal well temperature measuring device, comprising a gravity plate, a motor, a floating shell, an adjusting cylinder, a threaded cylinder and a temperature measuring module, wherein the motor is mounted on the gravity plate, the output end of the motor is connected to a second rotating rod, and a first protrusion is arranged on the outer side of the second rotating rod; the adjusting cylinder is movably mounted on the outer side of the second rotating rod, and a second protrusion matching with the first protrusion is arranged on the inner side of the adjusting cylinder; a threaded rod is arranged at the lower end of the adjusting cylinder, the threaded cylinder is mounted on the threaded rod, and the temperature measuring module is mounted on the lower side of the threaded cylinder; the floating shell is mounted on the lower side of the gravity plate through a telescopic cover; and an outlet matching with the temperature measuring module is arranged on the floating shell.

[0007] Preferably, a baffle is provided at the lower side of the outlet, and the baffle is mounted on the floating shell through an elastic hinge.

[0008] Preferably, it further comprises a spring, one end of which is mounted on the gravity plate and the other end of which is mounted on the adjustment cylinder.

[0009] Preferably, a first limiting member is disposed on the upper side of the adjusting cylinder, and a second limiting member cooperating with the first limiting member is disposed on the outer side of the second rotating rod.

[0010] Preferably, a plurality of circumferentially arranged first protrusions are disposed on the outer side of the second rotating rod; a plurality of circumferentially arranged second protrusions are disposed on the inner side of the adjusting cylinder, and a groove is disposed between two adjacent second protrusions.

[0011] Preferably, a first rotating rod is further provided on the upper side of the output end of the motor, and a plurality of fan blades are provided on the first rotating rod; and a hanging piece is also provided on the upper end of the first rotating rod.

[0012] Preferably, it further comprises a sliding mechanism, wherein the sliding mechanism comprises a plurality of swing arms arranged circumferentially and a pulley installed on the outer side of the swing arms;

[0013] A connecting block is arranged on the outer side of the gravity plate.

[0014] The swing arm is hinged on the connecting block via a rotating shaft.

[0015] Preferably, the sliding mechanism further comprises an elastic member, the outer end of the elastic member is mounted on the connecting block via a fixing member, and the inner end of the elastic member is mounted on the rotating shaft;

[0016] Two swing arms are fixed on the rotating shaft, and the two swing arms extend toward the upper side and the lower side respectively;

[0017] The outer side surface of the pulley is a smooth surface, and a plurality of balls are arranged on the smooth surface, and the balls have a smooth surface.

[0018] Preferably, the geothermal well temperature measurement method comprises:

[0019] When the floating shell is lowered from the geothermal well onto the liquid, the floating shell is blocked;

[0020] The second rotating rod descends, and the first protrusion enters the groove between two adjacent second protrusions;

[0021] The motor drives the second rotating rod to rotate, and the adjustment cylinder is driven to rotate through the cooperation of the first protrusion and the second protrusion. At the same time, the threaded rod and the threaded cylinder rotate relative to each other, so that the threaded cylinder drives the temperature measuring module to move downward;

[0022] The temperature measuring module extends from an outlet on the lower side of the floating shell to measure the temperature of the geothermal well.

[0023] Preferably, the temperature measurement module pushes the baffle downward and extends out from the outlet;

[0024] After the temperature measurement is completed, the motor rotates in the opposite direction to shrink the temperature measurement module into the outlet, and the baffle is reset under the action of the elastic hinge to cover the outlet; or

[0025] Pull the lifting piece upward, the gravity plate moves up, and at the same time the first protrusion moves up and disengages from the second protrusion; the adjustment cylinder rotates in the opposite direction under the reset action of the spring, and at the same time drives the threaded rod and the threaded cylinder to rotate, and the temperature measuring module shrinks into the outlet.

[0026] Compared with the prior art, the utility model has the following beneficial effects: during the falling process, the temperature measuring module is stored in the floating shell to protect the temperature measuring module and prevent the temperature measuring module from being adhered to dust or being damaged; when falling onto the liquid, the temperature measuring module can move back and forth in a straight line and extend from the outlet to measure the temperature; thus improving the accuracy and precision of geothermal well temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a geothermal well temperature measuring device of the utility model;

[0028] Figure 2 It is a cross-sectional diagram of a geothermal well temperature measuring device;

[0029] Figure 3 It is a structural diagram of the swing arm;

[0030] Figure 4 1 is a schematic diagram of the installation of the elastic member;

[0031] Figure 5 is a schematic diagram of the cooperation between the first protrusion and the second protrusion;

[0032] Figure 6 is a schematic diagram of the cooperation between the first rotating rod and the adjusting cylinder;

[0033] Figure 7 This is a schematic diagram of the installation of the baffle.

[0034] Markings in the figure:

[0035] 1 geothermal well temperature measuring device, 11 gravity plate, 16 connecting block;

[0036] 2 motor, 21 first rotating rod, 22 second rotating rod, 221 first protrusion, 222 first stopper, 23 fan blade, 24 hanging member;

[0037] 3 floating shell, 31 adjusting cylinder, 311 second protrusion, 312 second stopper, 32 spring, 33 threaded rod, 34 threaded cylinder, 36 telescopic cover, 38 outlet, 39 baffle, 391 elastic hinge,

[0038] 5 temperature measuring module, 6 sliding mechanism, 62 rotating shaft, 63 swing arm, 64 pulley, 65 ball bearing, 66 elastic member, 67 fixing member. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0041] A geothermal well temperature measuring device 1, such as Figure 1-7 , including a gravity plate 11, a motor 2, a floating shell 3, an adjusting cylinder 31, a threaded cylinder 34 and a temperature measuring module 5, wherein the motor 2 is mounted on the gravity plate 11, and the lower output end of the motor 2 is connected to the second rotating rod 22, and the outer side of the second rotating rod 22 is provided with a first protrusion 221; the adjusting cylinder 31 is movably mounted on the outer side of the second rotating rod 22, and the inner side of the adjusting cylinder 31 is provided with a second protrusion 311 that matches the first protrusion 221; the lower end of the adjusting cylinder 31 is provided with a threaded rod 33, and the threaded cylinder 34 is mounted on the threaded rod 33, and the temperature measuring module 5 is mounted on the lower side of the threaded cylinder 34; the floating shell 3 is mounted on the lower side of the gravity plate 11 through a telescopic cover 36; the floating shell 3 is provided with an outlet 38 that matches the temperature measuring module 5.

[0042] When the floating shell 3 falls from the geothermal well onto the liquid, the floating shell 3 is blocked; the second rotating rod 22 descends, and the first protrusion 221 enters the groove between two adjacent second protrusions 311; the motor 2 drives the second rotating rod 22 to rotate, and the adjustment cylinder 31 is driven to rotate by the cooperation of the first protrusion 221 and the second protrusion 311, and at the same time, the threaded rod 33 and the threaded cylinder 34 rotate relative to each other, so that the threaded cylinder 34 drives the temperature measuring module 5 to move downward, and the temperature measuring module 5 extends from the outlet 38 on the lower side of the floating shell 3 to measure the temperature of the geothermal well. During the falling process, the temperature measuring module 5 is stored in the floating shell 3, and the temperature measuring module 5 is protected to prevent the temperature measuring module from adhering to dust or being damaged; when falling onto the liquid, the temperature measuring module 5 can move back and forth in a straight line and extend from the outlet 38 to measure the temperature; the accuracy and precision of the temperature measurement of the geothermal well are improved.

[0043] When the adjusting tube 31 approaches the second rotating rod 22 , the first protrusion 221 matches with the second protrusion 311 ; when the distance between the adjusting tube 31 and the second rotating rod 22 increases, the first protrusion 221 and the second protrusion 311 are separated.

[0044] like Figure 2 and Figure 7 A baffle 39 is provided at the lower side of the outlet 38, and the baffle 39 is mounted on the floating housing 3 through an elastic hinge 391. During the descent or ascent process, the baffle 9 is in close contact with the bottom surface of the floating housing 7, which can prevent dust from entering the outlet 8 and further protect the temperature measurement module. Figure 7 yes Figure 2 The outlet 38 in the figure is in a square structure, and the temperature measuring module 5 is in a corresponding square structure, which can prevent the temperature measuring module 5 and the threaded barrel 34 from rotating, and ensure that the threaded barrel 34 and the threaded rod 33 can rotate relative to each other.

[0045] Figure 2 and Figure 6 A spring 32 is also shown, one end of which is mounted on the gravity plate 11 and the other end of which is mounted on the adjustment cylinder 31, so as to provide power for resetting the temperature measuring module 5. Figure 6 A first stopper 222 is disposed on the upper side of the adjusting cylinder 31 , and a second stopper 312 matched with the first stopper 222 is disposed on the outer side of the second rotating rod 22 to prevent the adjusting cylinder from being separated from the second rotating rod 22 .

[0046] like Figure 5 and Figure 6 The outer side of the second rotating rod 22 is provided with a plurality of circumferentially arranged first protrusions 221; the inner side of the adjusting cylinder 31 is provided with a plurality of circumferentially arranged second protrusions 311, and a groove is provided between two adjacent second protrusions 311. When the second rotating rod 22 descends, the first protrusion 221 enters into the groove, and when the second rotating rod 22 descends, it maintains a certain rotation and can smoothly enter into the groove.

[0047] like Figure 1 and Figure 2 A first rotating rod 21 is also provided on the upper side of the output end of the motor 2, and a plurality of blades 23 are provided on the first rotating rod 21; a hanging piece 24 is also provided on the upper end of the first rotating rod 21. The rotation of the blades 23 can provide a certain power for the geothermal well temperature measuring device to descend; the geothermal well temperature measuring device can be installed on the hanging piece 24 through a rope, and the geothermal well temperature measuring device can be placed into the geothermal wellhead through the rope for temperature measurement. The hanging piece 24 is specifically a hanging ball, and the motor 2 is specifically a double-headed motor.

[0048] Figure 1-Figure 4A sliding mechanism 6 is also shown, and the sliding mechanism 6 includes a plurality of swing arms 63 arranged circumferentially and a pulley 64 installed on the outside of the swing arms 63; a connecting block 16 is arranged on the outside of the gravity plate 11, and the swing arm 63 is hinged on the connecting block 16 through a rotating shaft 62. The sliding mechanism 6 can enable the utility model to bypass certain obstacles during the descent process, which is conducive to the overall rapid and safe descent.

[0049] The sliding mechanism 6 also includes an elastic member 66, the outer end of which is mounted on the connecting block 16 through a fixing member 67, and the inner end of which is mounted on the rotating shaft 62; two swing arms 63 are fixed on the rotating shaft 62, and the two swing arms 63 extend upward and downward respectively; the outer side surface of the pulley 64 is a smooth surface, and a plurality of balls 65 are arranged on the smooth surface, and the balls 65 have a smooth surface. The friction between the pulley and the geothermal well can be reduced, and the pulley can be applied to geothermal wells of different diameters, thereby improving the obstacle avoidance capability.

[0050] Specific geothermal well temperature measurement methods include:

[0051] Step 101: Rope is hung on the hanging member, and the geothermal well temperature measuring device is placed in the geothermal well by the rope. When in use, firstly, the hanging member 24 is connected by a sufficiently long rope from the outside.

[0052] Step 102: When the floating shell 3 falls from the geothermal well onto the liquid, the floating shell 3 is blocked.

[0053] Step 103 : the second rotating rod 22 descends, and the first protrusion 221 enters into the groove between two adjacent second protrusions 311 .

[0054] Step 104: the motor 2 drives the second rotating rod 22 to rotate, and drives the adjusting cylinder 31 to rotate through the cooperation of the first protrusion 221 and the second protrusion 311. At the same time, the threaded rod 33 and the threaded cylinder 34 rotate relative to each other, so that the threaded cylinder 34 drives the temperature measuring module 5 to move downward.

[0055] Step 105 : The temperature measuring module 5 extends from the outlet 38 at the lower side of the floating shell 3 to measure the temperature of the geothermal well. More specifically, the temperature measuring module 5 pushes the baffle 39 downward and extends from the outlet 38 .

[0056] After the temperature measurement is completed, step 106 or 107 is executed.

[0057] Step 106 : the motor 2 rotates in the reverse direction to shrink the temperature measuring module 5 into the outlet 38 . The baffle 39 is reset under the action of the elastic hinge 391 and blocks the outlet 38 .

[0058] Step 107 : Pull the hanging member 24 upwards, the gravity plate 11 moves upwards, and at the same time the first protrusion 221 moves upwards and disengages from the second protrusion 311 , and then execute step 108 .

[0059] Step 108 : the adjusting cylinder 31 rotates in the opposite direction under the reset action of the spring 32 , driving the threaded rod 33 and the threaded cylinder 34 to rotate, so that the temperature measuring module 5 contracts into the outlet 38 .

[0060] The utility model can accelerate the rate of overall descent through the cooperation of the gravity plate and the fan blades; the overall moving speed in the geothermal well can be increased or decreased by adjusting the rotation direction of the fan blades; the temperature measuring module is stored in the outlet and the baffle to prevent dust from adhering to the temperature measuring module and affecting the temperature measurement accuracy, and to prevent the temperature measuring module from being damaged during the descent. When the floating shell floats on the liquid, the temperature measuring module 5 can move back and forth in a straight line along the inner wall of the outlet 38, and the temperature measuring module can push and open the baffle and extend from the outlet to measure the temperature of the geothermal well.

[0061] The outer surface of the pulley of the utility model is a smooth surface, which can reduce the friction between the pulley and the geothermal well, which is conducive to sliding down. The outer surface of each pulley is rotatably connected with a ball, which can further reduce the friction, thereby facilitating the overall rapid descent. By setting up multiple sets of swing arms, each swing arm can rotate independently, which is not only suitable for geothermal wells of different diameters, but also can move downward along the obstacle by rotating when encountering an obstacle on the inner wall of the geothermal well, thereby bypassing the obstacle.

[0062] Among them, the gravity plate can also be provided with electrical components such as a circuit board, a microcontroller, a memory, and a battery. The circuit board and the battery are connected to the temperature measurement module through flexible wires. The temperature measurement module can use a temperature sensor, etc. The microcontroller is connected to the memory, the battery, the motor, and the temperature measurement module respectively. The circuit board, the microcontroller, the battery, and other electrical components are prior art, and the utility model will not repeat them.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A geothermal well temperature measuring device, characterized in that: It comprises a gravity plate (11), a motor (2), a floating shell (3), an adjustment cylinder (31), a threaded cylinder (34) and a temperature measurement module (5). The motor (2) is mounted on the gravity plate (11); the output end of the motor (2) is connected to a second rotating rod (22); and a first protrusion (221) is provided on the outer side of the second rotating rod (22); The adjusting cylinder (31) is movably mounted on the outside of the second rotating rod (22), and a second convex block (311) matching with the first convex block (221) is arranged on the inside of the adjusting cylinder (31). A threaded rod (33) is provided at the lower end of the adjusting cylinder (31), a threaded cylinder (34) is mounted on the threaded rod (33), and the temperature measuring module (5) is mounted on the lower side of the threaded cylinder (34); The floating shell (3) is installed on the lower side of the gravity plate (11) via a telescopic cover (36); The floating housing (3) is provided with an outlet (38) that matches the temperature measuring module (5).

2. The geothermal well temperature measuring device according to claim 1, characterized in that: A baffle (39) is arranged at the lower side of the outlet (38), and the baffle (39) is mounted on the floating shell (3) via an elastic hinge (391).

3. The geothermal well temperature measuring device according to claim 1, characterized in that: It also includes a spring (32), one end of which is mounted on the gravity plate (11) and the other end of which is mounted on the adjustment cylinder (31).

4. The geothermal well temperature measuring device according to claim 1, characterized in that: A first limiting member (222) is arranged on the upper side of the adjusting cylinder (31), and a second limiting member (312) matching with the first limiting member (222) is arranged on the outer side of the second rotating rod (22).

5. The geothermal well temperature measuring device according to claim 1, characterized in that: The outer side of the second rotating rod (22) is provided with a plurality of first protrusions (221) arranged in a circumferential direction; A plurality of second protrusions (311) arranged in a circumferential direction are provided on the inner side of the adjusting cylinder (31). A groove is arranged between two adjacent second protrusions (311).

6. The geothermal well temperature measuring device according to claim 5, characterized in that: A first rotating rod (21) is also provided on the upper side of the output end of the motor (2), and a plurality of fan blades (23) are provided on the first rotating rod (21); a hanging piece (24) is also provided on the upper end of the first rotating rod (21).

7. The geothermal well temperature measuring device according to claim 5, characterized in that: It also includes a sliding mechanism (6), wherein the sliding mechanism (6) includes a plurality of swing arms (63) arranged circumferentially and a pulley (64) installed outside the swing arms (63); A connecting block (16) is arranged outside the gravity plate (11). The swing arm (63) is hinged to the connecting block (16) via a rotating shaft (62).

8. The geothermal well temperature measuring device according to claim 7, characterized in that: The sliding mechanism (6) further comprises an elastic member (66), the outer end of the elastic member (66) being mounted on the connecting block (16) via a fixing member (67), and the inner end of the elastic member (66) being mounted on the rotating shaft (62); Two swing arms (63) are fixed on the rotating shaft (62), and the two swing arms (63) extend toward the upper side and the lower side respectively; The outer side surface of the pulley (64) is a smooth surface, and a plurality of balls (65) are arranged on the smooth surface. The balls (65) have a smooth surface.

9. The geothermal well temperature measuring device according to claim 5, characterized in that: When the floating shell (3) falls from the geothermal well onto the liquid, the floating shell (3) is blocked; The second rotating rod (22) descends, and the first protrusion (221) enters the groove between two adjacent second protrusions (311); The motor (2) drives the second rotating rod (22) to rotate, and drives the adjusting cylinder (31) to rotate through the cooperation of the first protrusion (221) and the second protrusion (311), and at the same time, the threaded rod (33) and the threaded cylinder (34) rotate relatively, so that the threaded cylinder (34) drives the temperature measuring module (5) to move downward; The temperature measurement module (5) extends from an outlet (38) on the lower side of the floating shell (3) to measure the temperature of the geothermal well.

10. The geothermal well temperature measuring device according to claim 9, characterized in that: The temperature measuring module (5) pushes the baffle (39) downward and extends out from the outlet (38); After the temperature measurement is completed, the motor (2) rotates in the opposite direction, causing the temperature measurement module (5) to retract into the outlet (38), and the baffle (39) is reset under the action of the elastic hinge (391) to cover the outlet (38); or When the hanging member (24) is pulled upward, the gravity plate (11) moves upward, and at the same time the first protrusion (221) moves upward and disengages from the second protrusion (311); The regulating cylinder (31) rotates in the opposite direction under the resetting action of the spring, and at the same time drives the threaded rod (33) and the threaded cylinder (34) to rotate, and the temperature measuring module (5) shrinks into the outlet (38).

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