Underground pressure monitoring device for geothermal resource exploitation

Abstract

The utility model belongs to the technical field of underground pressure monitoring, and particularly discloses an underground pressure monitoring device for geothermal resource exploitation, which comprises a U-shaped mounting bottom plate, an external receiving end, a wind-up roller, a pressure sensor and a data line, the external receiving end and the wind-up roller are mounted in the U-shaped mounting bottom plate, and the pressure sensor is mounted in the U-shaped mounting bottom plate. A guide pipe is arranged on the outer wall of one side of the U-shaped mounting bottom plate, the data line is wound around the outer wall of the winding roller, a socket matched with an external receiving end is formed in one end of the data line, and the other end of the data line penetrates through the guide pipe to be output and is connected with a pressure sensor. According to the scheme, during use, the pressure sensor is fixed to a pressure monitoring point of the pipeline, the pressure in the pipeline is monitored in real time, the use state of the pipeline can be obtained in real time, when pressure fluctuation occurs, the pressure fluctuation can be found in time, and the data line can be conveniently stored in a winding and unwinding mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of downhole pressure monitoring, in particular to a downhole pressure monitoring device for geothermal resource exploitation. BACKGROUND

[0002] Geothermal resource exploitation is a complex systematic project, involving geological exploration, drilling engineering, resource utilization and environmental protection and multiple links. At present, geothermal resource exploitation is widely used in heating.

[0003] Geothermal heating is a process of extracting and delivering the heat energy stored in the earth to the user end for heating through technical means. Geothermal heating obtains underground heat energy through geothermal wells or buried pipes, and delivers it to the building heating system through pipe network after temperature is raised by heat exchange equipment (such as heat exchanger, heat pump).

[0004] Pressure monitoring equipment needs to be installed on the pipeline of geothermal heating to monitor the pressure in the pipeline in real time. Through pressure monitoring, pipeline pressure abnormalities can be found in time to avoid leakage accidents. The geothermal heating system (especially the medium-deep geothermal direct supply pipeline) is in a high-temperature and high-pressure environment for a long time, and the pipeline interface, valve or weld may cause pressure drop due to corrosion and aging. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a downhole pressure monitoring device for geothermal resource exploitation to solve the problem of pipeline leakage caused by long-term high pressure in the background technology.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a downhole pressure monitoring device for geothermal resource exploitation, comprising:

[0007] U-shaped mounting bottom plate, external receiving end, winding roller, pressure sensor and data line;

[0008] Among them, the external receiving end and the winding roller are installed inside the U-shaped mounting bottom plate, a guide pipe is arranged on one side of the outer wall of the U-shaped mounting bottom plate, the data line is wound on the outer wall of the winding roller, one end of the data line is provided with a socket matched with the external receiving end, and the other end of the data line is output from the guide pipe and connected with the pressure sensor.

[0009] Preferably, the guide pipe is downwardly bent, and a flared cover is arranged at the connection between the guide pipe and the U-shaped mounting bottom plate.

[0010] Preferably, the pressure sensor is installed on the mounting seat, the mounting seat comprises an upper cover plate and a flange plate connected to the lower surface of the upper cover plate through a support column, the pressure sensor is installed in the middle of the flange plate, and the detection end of the pressure sensor extends to the lower side of the flange plate.

[0011] Preferably, a fastening plug is inserted into the inner part of the flared cover, which is matched with the shape and size of the inner part of the flared cover, and the data line passes through the inner part of the fastening plug.

[0012] Preferably, a taking and placing handle is connected to the right side wall of the fastening plug.

[0013] Preferably, a cutout is transversely arranged in the middle left side of the fastening plug, an insertion opening is arranged in the middle of the right wall of the fastening plug, the cutout extends to the left side of the insertion opening, and the taking and placing handle is arranged on the upper and lower sides of the insertion opening.

[0014] Preferably, the fastening plug is made of rubber.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] When the scheme is used, the pressure sensor is fixed at a pressure monitoring point of the pipeline, the pressure in the pipeline is monitored in real time, the state of use of the pipeline can be acquired in real time, when the pressure fluctuates, it can be found in time, and the data line can be conveniently stored by winding and releasing.

[0017] In addition, the fastening plug is arranged, the data line is clamped based on the extrusion of the fastening plug and the flared cover after the data line is released to a target depth, and the data line is prevented from further falling. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a structural schematic view of the data line, the flange plate and the pressure sensor of the utility model;

[0020] Figure 3 It is a structural schematic view of the guide pipe, the flared cover and the fastening plug of the utility model;

[0021] Figure 4 It is a sectional view of the fastening plug of the utility model;

[0022] Figure 5 It is a structural schematic view of the utility model U-shaped installation bottom plate external hoop ring.

[0023] In the drawing: 1, U-shaped installation bottom plate; 2, guide pipe; 3, winding roller; 4, data line; 5, insertion opening; 6, external receiving end; 7, flange plate; 8, pressure sensor; 9, flared cover; 10, fastening plug; 11, cutout; 12, taking and placing handle; 13, insertion opening. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] Embodiment one:

[0027] Please refer to Figures 1-5 The present application provides a technical scheme: a downhole pressure monitoring device for geothermal resource exploitation, comprising: a U-shaped installation bottom plate 1, an external receiving end 6, a winding roller 3, a pressure sensor 8 and a data line 4.

[0028] Among them, the external receiving end 6 and the winding roller 3 are installed inside the U-shaped installation bottom plate 1, a guide pipe 2 is arranged on one side of the outer wall of the U-shaped installation bottom plate 1, the data line 4 is wound on the outer wall of the winding roller 3, one end of the data line 4 is provided with a socket 5 matched with the external receiving end 6, and the other end of the data line 4 is output from the guide pipe 2 and connected with the pressure sensor 8.

[0029] The above content is analyzed: in use, a connecting hole is opened on the right side of the U-shaped installation bottom plate 1, the U-shaped installation bottom plate 1 is fixed to the ground installation position through screws, the data line 4 is made of waterproof and high-temperature resistant material, or a corresponding protective layer is coated on the outer surface of the data line 4 (prior art, not described here), the data line 4 is measured by measuring or a preset scale pattern on the surface of the data line 4, after reaching the position, the socket 5 is connected with the external receiving end 6, and the external receiving end 6 is selected as PLC, industrial development board and other existing devices capable of receiving monitoring pressure values according to the requirements of use.

[0030] Embodiment two:

[0031] Please refer to Figures 1-5 The present application provides a technical scheme based on embodiment one: the guide pipe 2 is downwardly bent, and the connection between the guide pipe 2 and the U-shaped installation bottom plate 1 is provided with a flared cover 9.

[0032] The above content is analyzed: the bending part of the guide pipe is arranged in an arc shape, and the flared cover 9 is arranged so that the wear of the data line 4 at the connection with the flared cover 9 is small.

[0033] Embodiment three:

[0034] Please refer to Figures 1-5 The utility model provides a technical scheme based on embodiment one: the pressure sensor 8 is installed on the mounting seat, the mounting seat includes the upper cover plate and the flange plate 7 connected on the lower surface of the upper cover plate through the support, the pressure sensor 8 is installed in the middle part of the flange plate 7, and the detection end of the pressure sensor 8 extends to the lower side of the flange plate 7.

[0035] The above content is analyzed: the upper cover plate protects the pressure sensor 8 from the outside, the flange plate 7 is used for fixing the pressure sensor 8 and can be connected with the corresponding flange structure of the pipeline monitoring point, and a sealing structure is set when connecting, and after connection, the detection end of the pressure sensor 8 is inserted into the pipeline.

[0036] Embodiment four:

[0037] Please refer to Figures 1-5 The utility model provides a technical scheme based on embodiment two: the inside of the flared cover 9 is inserted with the fastening plug 10, the fastening plug 10 is matched with the inside shape and size of the flared cover 9, and the data line 4 passes through the inside of the fastening plug 10. The right side wall of the fastening plug 10 is connected with the taking handle 12, the left side of the middle of the fastening plug 10 is transversely provided with the notch 11, the right wall of the fastening plug 10 is provided with the insertion port 13 in the middle, the notch 11 extends to the left side of the insertion port 13, and the taking handle 12 is located on the upper and lower sides of the insertion port 13. The fastening plug 10 is made of rubber.

[0038] The above content is analyzed: in use, the data line 4 is previously passed through the notch 11 and the insertion port 13, when winding or collecting the data line 4 below, one hand holds the fastening plug 10, the fastening plug 10 does not move with the movement of the data line 4 when the data line moves, after the data line 4 is moved in place, the fastening plug 10 is inserted into the flared cover 9, the fastening plug 10 is made of rubber, is deformed in the flared cover 9, is extruded to the data line 4, the data line is not easy to move, and when the data line 4 is released outward, the fastening plug 10 has the tendency to push the flared cover 9 inside, so that the connection between the fastening plug 10 and the flared cover 9 is more fastened.

[0039] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be considered as limiting the claims involved.

[0040] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A downhole pressure monitoring device for geothermal resource extraction, characterized in that, include: U-shaped mounting base plate (1), external receiving end (6), winding roller (3), pressure sensor (8) and data cable (4); The external receiving end (6) and the take-up roller (3) are installed inside the U-shaped mounting base plate (1). A guide tube (2) is provided on one side of the outer wall of the U-shaped mounting base plate (1). The data cable (4) is wound around the outer wall of the take-up roller (3). One end of the data cable (4) is provided with a socket (5) that matches the external receiving end (6). The other end of the data cable (4) passes through the guide tube (2) and is output and connected to the pressure sensor (8).

2. The downhole pressure monitoring device for geothermal resource extraction according to claim 1, characterized in that: The guide tube (2) is bent downwards, and a mask (9) is provided at the connection between the guide tube (2) and the U-shaped mounting base plate (1).

3. The downhole pressure monitoring device for geothermal resource extraction according to claim 1, characterized in that: The pressure sensor (8) is mounted on a mounting base, which includes an upper cover plate and a flange plate (7) connected to the lower surface of the upper cover plate by a support column. The pressure sensor (8) is mounted in the middle of the flange plate (7), and the detection end of the pressure sensor (8) extends to the lower side of the flange plate (7).

4. The downhole pressure monitoring device for geothermal resource extraction according to claim 2, characterized in that: A fastening plug (10) is inserted inside the expanding mask (9). The fastening plug (10) is adapted to the internal shape and size of the expanding mask (9). The data cable (4) passes through the inside of the fastening plug (10).

5. The downhole pressure monitoring device for geothermal resource extraction according to claim 4, characterized in that: The right side wall of the fastening plug (10) is connected to a pick-and-place handle (12).

6. The downhole pressure monitoring device for geothermal resource extraction according to claim 5, characterized in that: A slit (11) is provided laterally on the left side of the fastening plug (10), and an insertion port (13) is provided in the middle of the right wall of the fastening plug (10). The slit (11) extends to the left side of the insertion port (13), and the pick-and-place handle (12) is located on the upper and lower sides of the insertion port (13).

7. A downhole pressure monitoring device for geothermal resource extraction according to any one of claims 4-6, characterized in that: The fastening plug (10) is made of rubber.

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