Geothermal energy constant temperature method thermal physical property testing equipment

Abstract

The application provides a geothermal energy constant-temperature method thermal physical property test device, relates to the technical field of geothermal well temperature test, and comprises a heat preservation water tank, the heat preservation water tank is used for storing water, and the heat preservation water tank is provided with a heater for heating water, a first temperature sensor is further arranged in the heat preservation water tank, a threaded opening is arranged at the top of the heat preservation water tank, and a threaded cover is connected to the threaded opening, a one-way air inlet valve is communicated with the top of the threaded cover, the top end of the one-way air inlet valve is connected with an air inlet pipe, the end, away from the one-way air inlet valve, of the air inlet pipe is connected with a heat insulation pipe, and heating wires are arranged in the heat insulation pipe. The heater can heat the water in the heat preservation water tank, so that the initial constant temperature of the test water is maintained, the water temperature interference of the test water caused by environmental factors is effectively reduced, the initial water temperature of the test water is kept stable, and therefore the accuracy of the geothermal energy thermal physical property test result is improved, and a reliable basis is provided for accurately evaluating the heat exchange performance of the geothermal well.

Description

Technical Field

[0001] This utility model relates to the field of geothermal well temperature testing technology, and more specifically, to a geothermal energy isothermal thermophysical property testing device. Background Technology

[0002] With the increasing global demand for renewable energy, geothermal energy, as a clean and sustainable energy form, has received widespread attention and development. Geothermal wells, as key facilities for the development and utilization of geothermal energy, directly affect the extraction and utilization of geothermal energy through their heat exchange efficiency. By measuring changes in heat, i.e., calorimetry, such as by measuring specific heat and thermal conductivity, the thermal properties of geothermal wells can be evaluated.

[0003] In existing technologies, calorimetry (such as calculating thermal conductivity by measuring the temperature difference before and after heat exchange in water) is commonly used to evaluate the heat exchange performance of geothermal wells. However, the test water is usually taken directly from the environment or a simple insulated container, and its initial water temperature is easily affected by fluctuations in ambient temperature (such as diurnal temperature range and seasonal changes). This can lead to deviations in the initial water temperature of multiple sets of experiments in the same test procedure, affecting the repeatability and accuracy of the test data. Therefore, we have made improvements to this by proposing a geothermal energy isothermal thermophysical property testing device. Utility Model Content

[0004] This utility model provides a geothermal energy constant temperature method thermophysical property testing device, including an insulated water tank for storing water and equipped with a heater for heating the water. A first temperature sensor is also installed inside the insulated water tank. The top of the insulated water tank is provided with a threaded port, and a threaded cap is connected to the threaded port. The top of the threaded cap is connected to a one-way air inlet valve. The top of the one-way air inlet valve is connected to an air inlet pipe. The end of the air inlet pipe away from the one-way air inlet valve is connected to a heat insulation pipe, and a heating wire is installed inside the heat insulation pipe.

[0005] As a preferred technical solution of this application, a second temperature sensor is provided inside the air intake pipe.

[0006] As a preferred technical solution of this application, a protective box is installed at the bottom of the insulated water tank, and a testing mechanism is provided inside the protective box.

[0007] As a preferred technical solution of this application, the testing mechanism includes a delivery pump installed in a protective box, the inlet end of the delivery pump is connected to a first connecting pipe, the top end of the first connecting pipe extends into the insulated water tank, the outlet end of the delivery pump is connected to a third temperature sensor, the third temperature sensor is connected to a flow meter, and the flow meter is connected to a first connector.

[0008] As a preferred technical solution of this application, the testing mechanism further includes a drain pipe and a second connector installed on the protective box. A fourth temperature sensor is connected between the second connector and the drain pipe. One end of the drain pipe extends from the back of the protective box to the outside of the protective box. One end of both the first connector and the second connector extends to the outside of one side of the protective box.

[0009] As a preferred technical solution of this application, a touch screen is installed inside the protective box, and a controller is provided on the back of the touch screen. The touch screen, the third temperature sensor, the flow meter, the fourth temperature sensor, the first temperature sensor, the heating wire, and the second temperature sensor are all connected to the controller.

[0010] As a preferred technical solution of this application, the front of the protective box is connected to a door by a hinge, a transparent window is provided in the middle of the door, and a buckle is provided between the door and the protective box.

[0011] As a preferred technical solution of this application, the bottom of the protective box is equipped with wheels.

[0012] As a preferred technical solution of this application, two support seats are installed on one side of the protective box, and a handrail is fixedly installed between the tops of the two support seats. A support frame is fitted on the outer surface of the handrail, and a protective cover is connected to the inner side of the support frame through a damping pivot. A notch is provided on the protective cover.

[0013] As a preferred technical solution of this application, the side of the support frame is threaded with a hand-tightening bolt, one end of which passes through the support frame and abuts against the handrail.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] This application utilizes a heater to heat the water in the insulated water tank, thereby maintaining a constant initial temperature for the test water. This effectively reduces environmental interference with the water temperature, ensuring a stable initial water temperature and improving the accuracy of geothermal energy thermal property test results. It provides a reliable basis for accurately evaluating the heat exchange performance of geothermal wells. As the water level in the insulated water tank decreases, outside air enters the tank through the insulation pipe, air inlet pipe, and one-way air inlet valve to maintain air pressure. During this process, the outside air is first heated by the heating wire to the same temperature as the inside of the insulated water tank. This design reduces the impact of low-temperature outside air on the temperature inside the insulated water tank. Attached Figure Description

[0017] Figure 1 A schematic diagram of the geothermal energy isothermal thermophysical property testing equipment provided in this application;

[0018] Figure 2 A schematic diagram of the structure of the box door after it is opened, as provided in this application;

[0019] Figure 3 This is a schematic diagram of the heating wire provided in this application;

[0020] Figure 4 A schematic diagram of the notch provided in this application;

[0021] Figure 5 This is a partial cross-sectional structural diagram of the geothermal energy isothermal method thermophysical property testing equipment provided in this application during use.

[0022] The image shows:

[0023] 1. Insulated water tank; 101. Heater; 102. Threaded cap; 103. One-way air inlet valve; 104. Air inlet pipe; 105. Heat insulation pipe; 106. Heating wire; 108. First temperature sensor; 2. Testing mechanism; 201. Delivery pump; 202. First connecting pipe; 203. Third temperature sensor; 204. Flow meter; 205. First connector; 206. Second connector; 207. Fourth temperature sensor; 208. Drain pipe; 209. Touch screen; 3. Support base; 301. Handrail; 302. Support frame; 303. Protective cover; 304. Hand-tightening bolt; 305. Notch; 4. Protective box; 401. Wheel; 402. Box door; 403. Transparent window; 5. Heat exchange pipe; 501. Second connecting pipe. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] For an example, please refer to... Figures 1-5A geothermal energy constant temperature method thermal property testing device includes an insulated water tank 1 for storing water and equipped with a heater 101 for heating the water. A first temperature sensor 108 is also installed in the insulated water tank 1. The heater 101 can heat the water in the insulated water tank 1 to maintain the constant temperature of the test water at the beginning. This can effectively reduce the interference of environmental factors on the water temperature of the test water, so that the initial water temperature of the test water remains stable, thereby improving the accuracy of the geothermal energy thermal property test results and providing a reliable basis for accurately evaluating the heat exchange performance of geothermal wells.

[0028] The top of the insulated water tank 1 is provided with a threaded opening, and the threaded opening is connected to a threaded cap 102. The top of the threaded cap 102 is connected to a one-way air inlet valve 103. The top of the one-way air inlet valve 103 is connected to an air inlet pipe 104. The end of the air inlet pipe 104 away from the one-way air inlet valve 103 is connected to a heat insulation pipe 105. A heating wire 106 is installed inside the heat insulation pipe 105. As the water level in the insulated water tank 1 drops, outside air enters the insulated water tank 1 through the heat insulation pipe 105, the air inlet pipe 104, and the one-way air inlet valve 103 to maintain the air pressure. During this process, the outside air is first heated by the heating wire 106 to the same temperature as the inside of the insulated water tank 1. This setting can reduce the influence of the low temperature outside air on the temperature inside the insulated water tank 1.

[0029] Furthermore, a second temperature sensor is installed inside the air intake pipe 104. The second temperature sensor can detect the temperature of the air after it has been heated by the heating wire 106, so as to control the heating temperature of the heating wire 106.

[0030] Furthermore, a protective box 4 is installed at the bottom of the insulated water tank 1, and a testing mechanism 2 is installed inside the protective box 4. The testing mechanism 2 includes a delivery pump 201 installed inside the protective box 4. The inlet end of the delivery pump 201 is connected to a first connecting pipe 202, the top end of the first connecting pipe 202 extends into the insulated water tank 1, and the outlet end of the delivery pump 201 is connected to a third temperature sensor 203. The third temperature sensor 203 is connected to a flow meter 204, and the flow meter 204 is connected to a first connector 205. Through the delivery pump 201 and the first connecting pipe 202, water in the insulated water tank 1 can be delivered to the third temperature sensor 203, the flow meter 204, and the first connector 205.

[0031] Furthermore, the testing mechanism 2 also includes a drain pipe 208 and a second connector 206 installed on the protective box 4. A fourth temperature sensor 207 is connected between the second connector 206 and the drain pipe 208. One end of the drain pipe 208 extends from the back of the protective box 4 to the outside of the protective box 4. One end of the first connector 205 and the second connector 206 both extend to the outside of one side of the protective box 4. The fourth temperature sensor 207 can detect the water temperature after it has been heated by the geothermal well.

[0032] Furthermore, a touch screen 209 is installed inside the protective box 4. A controller is located on the back of the touch screen 209. The touch screen 209, the third temperature sensor 203, the flow meter 204, the fourth temperature sensor 207, the first temperature sensor 108, the heating wire 106, and the second temperature sensor are all connected to the controller. The touch screen 209, the third temperature sensor 203, the flow meter 204, the fourth temperature sensor 207, the first temperature sensor 108, the heating wire 106, and the second temperature sensor are all existing components. Their specific structures and principles are all existing technologies, and will not be described in detail in this application.

[0033] Furthermore, the front of the protective box 4 is connected to a door 402 via a hinge. A transparent window 403 is provided in the middle of the door 402, and a buckle is provided between the door 402 and the protective box 4. The transparent window 403 facilitates observation of the interior of the protective box 4.

[0034] Furthermore, the bottom of the protective box 4 is equipped with wheels 401, which facilitates the movement of the entire unit.

[0035] Furthermore, two support seats 3 are installed on one side of the protective box 4. A handrail 301 is fixedly installed between the tops of the two support seats 3. A support frame 302 is fitted on the outer surface of the handrail 301. A protective cover 303 is connected to the inner side of the support frame 302 through a damping pivot. A notch 305 is provided on the protective cover 303. In the non-test state, the support frame 302 can protect the second connector 206 and the first connector 205. The notch 305 is set to avoid the second connector 206 and the first connector 205 when the protective cover 303 is raised or lowered. The protective cover 303 can rotate. Therefore, when the protective cover 303 protects the second connector 206 and the first connector 205, the protective cover 303 can be rotated so that the notch 305 corresponds to the support seat 3 and the support frame 302, so that the support seat 3 and the support frame 302 can block the notch 305.

[0036] Furthermore, the side of the support frame 302 is threaded with a hand-tightening bolt 304. One end of the hand-tightening bolt 304 is inserted into the support frame 302 and abuts against the handrail 301. Tightening the hand-tightening bolt 304 can fix the position of the protective cover 303.

[0037] It also includes a heat exchange pipe 5 placed in a geothermal well during testing. The two ends of the heat exchange pipe 5 are connected to the first connector 205 and the second connector 206 by a second connecting pipe 501. Point A in the figure is marked as the geothermal well.

[0038] In use, after loosening the hand-tightening bolt 304, rotate the protective cover 303 so that the notch 305 faces downward, and then push the support frame 302 upward so that the protective cover 303 rises. During the rising process, the second connector 206 and the first connector 205 are avoided through the notch 305. After rising, tighten the hand-tightening bolt 304 and connect the second connector 206 and the first connector 205 to the heat exchange tube 5 through the second connecting pipe 501.

[0039] The heater 101 heats the water in the insulated water tank 1 to a set temperature, which is detected by the first temperature sensor 108. The heater 101 stops heating when the set temperature is reached, and continues heating when the temperature is lower. The delivery pump 201 draws water from the insulated water tank 1 through the first connecting pipe 202 and then passes it through the third temperature sensor 203, the flow meter 204, the first connector 205, the second connecting pipe 501, the heat exchange pipe 5, the second connector 206, the fourth temperature sensor 207, and the drain pipe 208. During this process, the third temperature sensor 203 measures the temperature of the water before heat exchange with the geothermal well, the fourth temperature sensor 207 measures the temperature of the water after heat exchange with the geothermal well, and the flow meter 204 measures the water consumption.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A geothermal energy thermostatic method thermal physical property testing device, characterized by, The device includes an insulated water tank (1) for storing water and is equipped with a heater (101) for heating water. A first temperature sensor (108) is also installed inside the insulated water tank (1). The top of the insulated water tank (1) is provided with a threaded opening and a threaded cap (102) is connected to the threaded opening. A one-way air inlet valve (103) is connected to the top of the one-way air inlet valve (103). An air inlet pipe (104) is connected to the top of the air inlet pipe (104) away from the one-way air inlet valve (103). A heat insulation pipe (105) is installed inside the heat insulation pipe (105). A heating wire (106) is installed inside the heat insulation pipe (105).

2. The geothermal energy isothermal method thermophysical property test device according to claim 1, characterized in that, A second temperature sensor is installed inside the air intake pipe (104).

3. The geothermal energy isothermal method thermophysical property test device according to claim 2, characterized in that, The bottom of the insulated water tank (1) is equipped with a protective box (4), and a testing mechanism (2) is installed inside the protective box (4).

4. The geothermal energy isothermal method thermal physical property test equipment according to claim 3, characterized in that, The testing mechanism (2) includes a delivery pump (201) installed in a protective box (4). The inlet end of the delivery pump (201) is connected to a first connecting pipe (202), the top end of the first connecting pipe (202) extends into the insulated water tank (1), the outlet end of the delivery pump (201) is connected to a third temperature sensor (203), the third temperature sensor (203) is connected to a flow meter (204), and the flow meter (204) is connected to a first connector (205).

5. The geothermal energy thermostatted HPHT test apparatus of claim 4, wherein, The testing mechanism (2) also includes a drain pipe (208) and a second connector (206) installed on the protective box (4). A fourth temperature sensor (207) is connected between the second connector (206) and the drain pipe (208). One end of the drain pipe (208) extends from the back of the protective box (4) to the outside of the protective box (4). One end of the first connector (205) and the second connector (206) both extend to the outside of one side of the protective box (4).

6. The geothermal energy isothermal method thermal physical property test equipment according to claim 5, characterized in that, The protective box (4) is equipped with a touch screen (209). A controller is provided on the back of the touch screen (209). The touch screen (209), the third temperature sensor (203), the flow meter (204), the fourth temperature sensor (207), the first temperature sensor (108), the heating wire (106) and the second temperature sensor are all connected to the controller.

7. The geothermal energy thermostatted thermophysical property test apparatus of claim 3, wherein, The protective box (4) has a door (402) connected to the front by a hinge. A transparent window (403) is provided in the middle of the door (402), and a buckle is provided between the door (402) and the protective box (4).

8. The geothermal energy thermostatted thermophysical property test apparatus of claim 3, wherein, The bottom of the protective box (4) is equipped with wheels (401).

9. The geothermal energy thermostatted thermophysical property test apparatus of claim 5, wherein, Two support seats (3) are installed on one side of the protective box (4). A handrail (301) is fixedly installed between the tops of the two support seats (3). A support frame (302) is fitted on the outer surface of the handrail (301). A protective cover (303) is connected to the inner side of the support frame (302) through a damping pivot. A notch (305) is opened on the protective cover (303).

10. The geothermal energy thermostatted HPHT test apparatus of claim 9, wherein, The side surface of the support frame (302) is threadedly connected with a hand screw bolt (304), one end of the hand screw bolt (304) penetrating into the support frame (302) and abutting against the handrail (301).

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