Temperature control system of crustal stress water pressure simulation experiment device

Abstract

The utility model provides a temperature control system of a crustal stress water pressure simulation experiment device, and relates to the field of crustal stress water pressure simulation experiments. The temperature control system of the crustal stress water pressure simulation experiment device comprises a crustal stress water pressure tester main body, the bottom surface of the crustal stress water pressure tester main body is fixedly connected with a bearing plate, the surface of the bearing plate is fixedly connected with a placing block, and a temperature control assembly is installed in the placing block. Through the arrangement of the pressure sensor, the electromagnetic valve and the temperature control assembly, water pressure can be measured, stable output of the water pressure is ensured, quick response can be achieved so that the water pressure can be adjusted, the reliability and accuracy of an experiment result can be ensured, and meanwhile, in order to more comprehensively research the relation between crustal stress and temperature, the experiment result is more accurate. According to the device, a temperature control system is designed to simulate crustal stress creep differences at different temperatures from normal temperature to high temperature so as to simulate various possible temperature conditions in a stratum.

Description

Technical Field

[0001] This application relates to the technical field of in-situ stress and water pressure simulation experiments, and particularly relates to a temperature control system for an in-situ stress and water pressure simulation experiment device. Background Art

[0002] In-situ stress is the stress distribution state in the strata, which has an important impact on stratum stability, seismic activities, oil and gas field development, etc. However, the in-situ stress distribution is complex and affected by many factors, making it difficult to accurately measure and predict. Therefore, it is very necessary to study in-situ stress and its variation law through simulation experiment methods.

[0003] At present, there are already some in-situ stress simulation experiment devices on the market, but most of the devices have single functions and low control accuracy. The purpose of this project is to improve the pressure control and temperature control systems, which can achieve high-precision and high-stability simulation experiments, and has strong competitive advantages and market prospects. Utility Model Content

[0004] This application provides a temperature control system for an in-situ stress and water pressure simulation experiment device to solve the problems of in-situ stress and water pressure simulation experiments.

[0005] This application provides a temperature control system for an in-situ stress and water pressure simulation experiment device, including the main body of an in-situ stress and water pressure tester. A load-bearing plate is fixedly connected to the bottom surface of the main body of the in-situ stress and water pressure tester. A placement block is fixedly connected to the surface of the load-bearing plate. A temperature control component is installed inside the placement block. A placement rack is fixedly connected to the surface of the load-bearing plate. A high-pressure pump is threadedly connected to the surface of the placement rack. One end of the high-pressure pump is connected through a through connection to a pressure control mechanism; the temperature control component includes a heating plate installed inside the placement block. One side of the heating plate is electrically connected to a controller through a power cord; the pressure control mechanism includes a hose connected through a through connection to one end of the high-pressure pump. One end of the hose is connected through a through connection to a drainage pipe. One end of the drainage pipe is connected through a through connection to an electromagnetic valve. One end of the electromagnetic valve is connected through a through connection to a nozzle. A pressure sensor is installed on the inner wall of the nozzle. One side of both the electromagnetic valve and the pressure sensor is electrically connected to one side of the controller through a power cord.

[0006] Preferably, the other end of the high-pressure pump is connected through a through connection to a water suction pipe. One end of the water suction pipe is inserted into a water tank, and the water tank is convenient for storing water.

[0007] Preferably, a support ring is slidably connected to the surface of the drainage pipe, and the number of the support rings is two groups. The support rings are convenient for supporting the drainage pipe.

[0008] Preferably, two groups of mounting blocks are fixedly connected to both sides of the load-bearing plate. Bolts are threadedly connected inside the four mounting blocks. The bolts are convenient for improving the stability of the device.

[0009] Preferably, experimental materials are placed on the surface of the placement block, and water injection holes are formed on the surface of the experimental materials. The water injection holes facilitate water injection and pressurization.

[0010] Preferably, a left clamping plate is lapped on the left side of the experimental material, and a right clamping plate is lapped on the right side of the experimental material. The left clamping plate and the right clamping plate facilitate the auxiliary clamping of the experimental material.

[0011] Preferably, a hydraulic cylinder A is fixedly connected to the surface of the left clamping plate, and a hydraulic cylinder B is fixedly connected to the surface of the right clamping plate. The hydraulic cylinder A and the hydraulic cylinder B facilitate providing power for clamping the experimental material.

[0012] Beneficial effects:

[0013] Considering the problems of in-situ stress and water pressure simulation experiments, by setting the pressure sensor, solenoid valve and temperature control component, the water pressure can be measured, the stable output of the water pressure can be ensured, and the water pressure can be adjusted quickly in response to ensure the reliability and accuracy of the experimental results. At the same time, in order to study the relationship between in-situ stress and temperature more comprehensively, the device designs a temperature control system to simulate the differences in in-situ stress creep at different temperatures, from normal temperature to high temperature, to simulate various temperature conditions that may occur in the formation.

[0014] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically gives the specific implementation manners of the present application. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the temperature control system of a ground stress and water pressure simulation experiment device of the present utility model.

[0017] Figure 2 It is a schematic diagram of the temperature control component structure of a ground stress and water pressure simulation experiment device of the present utility model.

[0018] Figure 3 It is a schematic diagram of the high-pressure pump and water tank structure of a ground stress and water pressure simulation experiment device of the present utility model.

[0019] Figure 4 This is a schematic structural diagram of the pressure control mechanism of the temperature control system of a ground stress and water pressure simulation experiment device of the present utility model.

[0020] Description of the reference numerals:

[0021] 1. Main body of the ground stress and water pressure tester; 2. Load-bearing plate; 3. Placing block; 4. Temperature control component; 401. Heating plate; 402. Controller; 5. Placing rack; 6. High-pressure pump; 7. Pressure control mechanism; 701. Hose; 702. Drainage pipe; 703. Solenoid valve; 704. Sprinkler head; 705. Pressure sensor; 8. Water suction pipe; 9. Water tank; 10. Support ring; 11. Mounting block; 12. Experimental material; 13. Left clamping plate; 14. Right clamping plate; 15. Hydraulic cylinder A; 16. Hydraulic cylinder B. Specific implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the drawings are intended to cover non-exclusive inclusion.

[0024] Reference to "embodiment" herein means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various places in the specification is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0026] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through screws, bolts or other fixing members; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0027] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0028] The present utility model provides a temperature control system for a ground stress and water pressure simulation experiment device as Figures 1-4 shown, which includes a ground stress and water pressure tester main body 1. A bearing plate 2 is fixedly connected to the bottom surface of the ground stress and water pressure tester main body 1. A placement block 3 is fixedly connected to the surface of the bearing plate 2. A temperature control component 4 is installed inside the placement block 3. A placement rack 5 is fixedly connected to the surface of the bearing plate 2. A high-pressure pump 6 is threadedly connected to the surface of the placement rack 5. One end of the high-pressure pump 6 is connected through a through connection to a pressure control mechanism 7; the temperature control component 4 includes a heating plate 401 installed inside the placement block 3. One side of the heating plate 401 is electrically connected to a controller 402 through a power cord; the pressure control mechanism 7 includes a hose 701 connected through a through connection to one end of the high-pressure pump 6. One end of the hose 701 is connected through a through connection to a drainage pipe 702. One end of the drainage pipe 702 is connected through a through connection to an electromagnetic valve 703. One end of the electromagnetic valve 703 is connected through a through connection to a spray head 704. A pressure sensor 705 is installed on the inner wall of the spray head 704. One side of both the electromagnetic valve 703 and the pressure sensor 705 is electrically connected to one side of the controller 402 through a power cord.

[0029] Wherein, the other end of the high-pressure pump 6 is connected through a water suction pipe 8, and one end of the water suction pipe 8 is inserted with a water tank 9.

[0030] The water tank 9 is convenient for storing water, supplying water to the high-pressure pump 6, and thus assisting in the progress of the simulation experiment.

[0031] Wherein, a support ring 10 is slidably connected to the surface of the drainage pipe 702, and the number of the support rings 10 is two groups.

[0032] The support ring 10 is convenient for supporting the drainage pipe 702, so that the operator can directly push the drainage pipe 702 to inject water and press the experimental material 12.

[0033] Wherein, two groups of mounting blocks 11 are fixedly connected to both sides of the bearing plate 2, and bolts are threadedly connected inside the four groups of mounting blocks 11.

[0034] The bolts are convenient for assisting the mounting blocks 11 to fix the device, which is beneficial to improving the stability of the device.

[0035] Wherein, an experimental material 12 is placed on the surface of the placing block 3, and a water injection hole is opened on the surface of the experimental material 12.

[0036] The water injection hole is convenient for water injection and pressurization to test the experimental material 12.

[0037] Wherein, a left clamping plate 13 is lapped on the left side of the experimental material 12, and a right clamping plate 14 is lapped on the right side of the experimental material 12.

[0038] The left clamping plate 13 and the right clamping plate 14 are convenient for assisting in clamping the experimental material 12 to prevent the experimental material 12 from moving during the experiment.

[0039] Wherein, a hydraulic cylinder A15 is fixedly connected to the surface of the left clamping plate 13, and a hydraulic cylinder B16 is fixedly connected to the surface of the right clamping plate 14.

[0040] The hydraulic cylinder A15 and the hydraulic cylinder B16 are convenient for providing power for clamping the experimental material 12.

[0041] The model of the pressure sensor 705 is: NS-TH18; the above parameters and models can be selected according to the actual situation;

[0042] Working principle: When the temperature control system of the in-situ stress water pressure simulation experiment device is used, first place the experimental material 12 on the placing block 3, turn on the power supply, the controller 402 sets the heating temperature, and the controller 402 controls the heating plate 401 to heat, so as to heat the experimental material 12;

[0043] Slide the drainage pipe 702 at the same time, insert the nozzle 704 into the water injection hole opened on the surface of the experimental material 12, start the high-pressure pump 6. The high-pressure pump 6 pumps the water in the water tank 9 through the water suction pipe 8, the high-pressure pump 6, the hose 701, the drainage pipe 702 and the solenoid valve 703, and finally sprays out from the nozzle 704. The pressure sensor 705 transmits the water pressure magnitude to the controller 402 through an electrical signal. According to the value, the controller 402 controls the opening size of the solenoid valve 703 to control the water flow rate, and further controls the water pressure. The water flow impacts the experimental material 12 to cause fracturing, and finally the in-situ stress water pressure tester main body 1 measures the in-situ stress of the experimental material 12.

[0044] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A temperature control system for a geostress and water pressure simulation experimental device, comprising a geostress and water pressure tester body (1), characterized in that: The bottom surface of the main body (1) of the ground stress water pressure tester is fixedly connected to a load-bearing plate (2), the surface of the load-bearing plate (2) is fixedly connected to a placement block (3), a temperature control component (4) is installed inside the placement block (3), the surface of the load-bearing plate (2) is fixedly connected to a placement rack (5), the surface of the placement rack (5) is threadedly connected to a high-pressure pump (6), and one end of the high-pressure pump (6) is through-connected to a pressure control mechanism (7); The temperature control component (4) comprises a heating plate (401) installed inside the placement block (3), and one side of the heating plate (401) is electrically connected to a controller (402) via a power line; The pressure control mechanism (7) comprises a hose (701) connected to one end of the high-pressure pump (6); one end of the hose (701) is connected to a drainage tube (702); one end of the drainage tube (702) is connected to a solenoid valve (703); one end of the solenoid valve (703) is connected to a nozzle (704); a pressure sensor (705) is installed on the inner wall of the nozzle (704); one side of the solenoid valve (703) and the pressure sensor (705) are both electrically connected to one side of the controller (402) via a power line.

2. A temperature control system for a geostress and water pressure simulation experimental device according to claim 1, characterized in that: The other end of the high-pressure pump (6) is connected to a water pumping pipe (8), and one end of the water pumping pipe (8) is plugged into a water tank (9).

3. A temperature control system for a geostress and water pressure simulation experimental device according to claim 1, characterized in that: The surface of the drainage tube (702) is slidably connected with a support ring (10), and the number of the support rings (10) is two groups.

4. The temperature control system of a geostress and water pressure simulation experimental device according to claim 1, characterized in that: Two groups of mounting blocks (11) are fixedly connected to both sides of the load-bearing plate (2), and bolts are threadedly connected inside the four groups of mounting blocks (11).

5. The temperature control system of the geostress and water pressure simulation experimental device according to claim 1 is characterized by: An experimental material (12) is placed on the surface of the placement block (3), and a water injection hole is opened on the surface of the experimental material (12).

6. A temperature control system for a geostress and water pressure simulation experimental device according to claim 5, characterized in that: The left side of the experimental material (12) is overlapped with a left clamping plate (13), and the right side of the experimental material (12) is overlapped with a right clamping plate (14).

7. A temperature control system for a geostress and water pressure simulation experimental device according to claim 6, characterized in that: A hydraulic cylinder A (15) is fixedly connected to the surface of the left clamping plate (13), and a hydraulic cylinder B (16) is fixedly connected to the surface of the right clamping plate (14).

Images