High-temperature and high-voltage electrical stability testing device and method

Abstract

The invention belongs to the technical field of electrical stability testing, and discloses a high-temperature and high-voltage electrical stability testing device and method.The high-temperature and high-voltage electrical stability testing device comprises a testing kettle body, the inlet end of the testing kettle body is sequentially connected with a liquid inlet valve, a pressure stabilizing assembly and a pressure stabilizing pump, the bottom end of the testing kettle body is connected with a blow-down valve, and the testing kettle body is connected with a control instrument; the testing kettle body comprises a kettle body, a sealing sleeve is installed at the top end of the kettle body, an assembling sleeve is installed in the sealing sleeve, a locking ring is installed between the sealing sleeve and the assembling sleeve, a flow guide plate is installed at the bottom of the assembling sleeve, a conductive cavity is formed between the flow guide plate and the assembling sleeve, and a sealing ring is installed in the conductive cavity. Two groups of side head electrodes are mounted in the assembly sleeve, a conductive silver block is mounted in the conductive cavity, and the lower ends of the two groups of side head electrodes extend into the conductive cavity and are connected with the conductive silver block, so that the problem of short service life of an existing high-temperature and high-voltage electrical stability tester is solved, and the detection precision of the high-temperature and high-voltage electrical stability tester is improved.

Description

Technical Field

[0001] This invention belongs to the field of electrical stability testing technology, specifically a high-temperature and high-pressure electrical stability testing device and method. Background Technology

[0002] With the increase in high-temperature deep well drilling, the frequency of using oil-based drilling fluids has greatly increased. Effectively simulating actual downhole conditions and accurately evaluating the emulsion stability of oil-based drilling fluids under high-temperature and high-pressure environments is crucial for downhole safety. Existing high-temperature and high-pressure electrical stability testing instruments, such as the one disclosed in Chinese utility model patent CN201637718U, include a high-temperature vessel, testing electrodes, and a controller. Two sets of side electrodes are mounted on the top of the high-temperature vessel via a high-temperature lid; these side electrodes are connected to the controller via wires. While this instrument can meet the electrical stability testing requirements of oil-based drilling fluids to a certain extent, it has the following problems:

[0003] First: When existing test samples are placed inside the high-temperature reactor, the test samples will deposit inside the high-temperature reactor due to the deposition effect, resulting in relatively poor detection accuracy of existing test instruments.

[0004] Second: During use, the side electrodes of this tester may corrode or accumulate dirt. Therefore, the tester needs to be recalibrated after prolonged use, which requires adjusting the conductive distance between the two sets of side electrodes. Existing testers do not have the capability to adjust the distance between the two sets of side electrodes, thus resulting in a short service life due to the inability to perform secondary calibration. Summary of the Invention

[0005] This invention provides a high-temperature and high-pressure electrical stability testing device and method, which solves the problems of relatively poor detection accuracy and short service life of existing oil-based drilling fluid high-temperature and high-pressure electrical stability testing.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-temperature, high-pressure electrical stability testing device includes a test vessel. An inlet valve, a pressure stabilizing component, and a pressure stabilizing pump are sequentially connected to the inlet end of the test vessel. A drain valve is connected to the bottom end of the test vessel. A controller is connected to the test vessel. The test vessel includes a vessel body. A sealing sleeve is installed at the top of the vessel body. An assembly is installed inside the sealing sleeve. A locking ring is installed between the sealing sleeve and the assembly. A guide plate is installed at the bottom of the assembly. A conductive cavity is provided between the guide plate and the assembly. Two sets of side electrodes are installed inside the assembly. A conductive silver block is installed inside the conductive cavity. The lower ends of the two sets of side electrodes extend into the conductive cavity and connect to the conductive silver block.

[0008] Preferably, the upper end of the side electrode is connected to the controller via a wire.

[0009] Preferably, two sets of operating handles are symmetrically mounted on the sealing sleeve.

[0010] Preferably, the device is provided with a liquid-filling straight hole, the top end of which is connected to a liquid-filling cavity, and the lower end of which is connected to a conductive cavity. The liquid-filling straight hole and the liquid-filling cavity are located between two sets of side electrodes.

[0011] Preferably, a heating plate is provided on the surface of the vessel body.

[0012] Preferably, a motor is installed at the bottom of the vessel body, and an agitator blade is connected to the motor, the agitator blade being located inside the vessel body.

[0013] Preferably, a liquid inlet is provided on the upper part of one side of the vessel body, and a liquid outlet is provided on the lower part. The liquid inlet is connected in sequence to the liquid inlet valve, the pressure stabilizing component and the pressure stabilizing pump, and the liquid outlet is connected to the drain valve.

[0014] Preferably, the pressure stabilizing assembly includes a pressure stabilizing cylinder, the inside of which is equipped with a sliding piston. The bottom end of the pressure stabilizing cylinder is connected to a pressure stabilizing pump, and the top of the pressure stabilizing cylinder is equipped with a sealing cap, which is connected to an inlet valve.

[0015] Preferably, the side electrode is installed inside the assembly via a guide sleeve.

[0016] A method for testing the electrical stability of a high-temperature and high-pressure vessel involves removing the sealing sleeve, along with the fittings and locking ring, from the top of the vessel body. The vessel body is then filled with the liquid to be tested. The sealing sleeve, fittings, and locking ring are then installed and fixed to the top of the vessel body. The liquid to be tested is placed inside a pressure stabilizing assembly. The pressure stabilizing pump, heating plate, motor, and controller are started to test the electrical stability of the liquid. After the electrical stability test is completed, the liquid inside the vessel body is drained through a drain valve, and the vessel body and pressure stabilizing assembly are then cleaned.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a high temperature and high pressure electrical stability testing device, in which a conductive cavity is provided between the guide plate and the device, and two sets of side electrodes are installed in the device. A conductive silver block is installed in the conductive cavity, and the lower ends of the two sets of side electrodes extend into the conductive cavity and are connected to the conductive silver block. During operation, the spacing between the side electrodes can be adjusted by replacing the conductive silver block, and secondary calibration can be performed, which solves the problem of short service life of existing high temperature and high pressure electrical stability testers.

[0018] Furthermore, the assembly includes a liquid-filling straight hole, which ensures that the space between the conductive silver blocks is always filled with conductive liquid, thus improving the detection accuracy of the high-temperature and high-pressure electrical stability tester. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a high-temperature and high-pressure electrical stability testing device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the test vessel of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the test vessel body structure;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0023] Figure 5 This is a schematic diagram of the voltage stabilizing component of a high-temperature and high-voltage electrical stability testing device according to the present invention.

[0024] In the diagram: 1-Test vessel body; 2-Inlet valve; 3-Pressure stabilizing component; 4-Pressure stabilizing pump; 5-Drain valve; 6-Wire; 7-Controller; 8-Vessel body; 9-Sealing sleeve; 10-Assembly assembly; 11-Locking ring; 12-Guide plate; 13-Conductive cavity; 14-Guide hole; 15-Side electrode; 16-Conductive silver block; 17-Inlet hole; 18-Drain hole; 19-Liquid filling straight hole; 20-Liquid filling chamber; 21-Operating handle; 22-Heating plate; 23-Motor; 24-Stirring blade; 25-Pressure stabilizing cylinder; 26-Sliding piston; 27-Sealing cover; 28-Guide sleeve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] 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.

[0028] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1As shown, the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0033] During operation, the detection liquid inside the vessel body 8 can enter the conductive cavity 13 through the guide hole 14.

[0034] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0035] The upper end of the side electrode 15 is connected to the controller 7 via the wire 6.

[0036] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0037] Two sets of operating handles 21 are symmetrically mounted on the sealing sleeve 9. During assembly, the sealing sleeve 9 can be installed or removed by operating the handles 21.

[0038] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0039] The assembly 10 is provided with a liquid-filling straight hole 19. The top end of the liquid-filling straight hole 19 is connected to a liquid-filling cavity 20. The lower end of the liquid-filling straight hole 19 is connected to a conductive cavity 13. The liquid-filling straight hole 19 and the liquid-filling cavity 20 are located between two sets of side electrodes 15.

[0040] The purpose of setting up the liquid placement straight hole 19 and the liquid placement chamber 20 is to allow the detection liquid in the vessel body 8 to enter the conductive cavity 13 through the guide hole 14 and then continue to enter the liquid placement chamber 20 along the liquid placement straight hole 19. In this way, even if there are air bubbles in the detection liquid in the assembly 10, the air bubbles will be stored in the liquid placement chamber 20 due to their own characteristics. This ensures that the detection liquid between the conductive silver blocks 16 is in a bubble-free state, thereby avoiding the problem of air bubbles affecting the measuring instrument and measurement accuracy.

[0041] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0042] A heating plate 22 is provided on the surface of the vessel body 8.

[0043] The purpose of setting up the heating plate 22 is to heat the vessel body 8 during operation, thereby placing the detection liquid inside the vessel body 8 in a high-temperature environment to simulate the detection liquid in a high-temperature geological environment.

[0044] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0045] A motor 23 is installed at the bottom of the vessel body 8, and an agitator blade 24 is connected to the motor 23. The agitator blade is located inside the vessel body 8.

[0046] The purpose of setting the stirring blade 24 is to make the test liquid tumble and flow up and down under the action of rotating the stirring blade 24 after entering the interior of the vessel body 8, thereby achieving the purpose of homogenizing the test liquid and avoiding the relatively poor detection accuracy caused by the inconsistency between the electrical stability performance of the upper layer and the lower layer when the test liquid precipitates.

[0047] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0048] The upper part of one side of the vessel body 8 is provided with a liquid inlet hole 17 and the lower part is provided with a liquid outlet hole 18; the liquid inlet hole 17 is connected to the liquid inlet valve 2, the pressure stabilizing component 3 and the pressure stabilizing pump 4 in sequence; the liquid outlet hole 18 is connected to the drain valve 5.

[0049] During operation, the detection liquid, with the cooperation of the pressure stabilizing component 3 and the pressure stabilizing pump 4, can enter the interior of the vessel body 8 through the liquid inlet 17.

[0050] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0051] The pressure stabilizing assembly 3 includes a pressure stabilizing cylinder 25, inside which is installed a sliding piston 26. The bottom end of the pressure stabilizing cylinder 25 is connected to the pressure stabilizing pump 4, and the top of the pressure stabilizing cylinder 25 is equipped with a sealing cover 27, which is connected to the liquid inlet valve 2.

[0052] The purpose of setting up the pressure stabilizing component 3 in this way is to place part of the liquid to be tested inside the pressure stabilizing cylinder 25 above the sliding piston 26 during operation. This allows the pressure stabilizing medium output by the pressure stabilizing pump 4 to squeeze the sliding piston 26 and force the liquid to be tested into the interior of the reactor body 8, thereby achieving the purpose of keeping the liquid to be tested inside the reactor body 8 under high pressure.

[0053] Another embodiment of the present invention provides a high-temperature and high-pressure electrical stability testing device, including a test vessel 1. The inlet end of the test vessel 1 is sequentially connected to an inlet valve 2, a pressure stabilizing component 3, and a pressure stabilizing pump 4. The bottom end of the test vessel 1 is connected to a drain valve 5. The test vessel 1 is connected to a controller 7. The test vessel 1 includes a vessel body 8. A sealing sleeve 9 is installed at the top of the vessel body 8. A fitting 10 is installed inside the sealing sleeve 9. A locking ring 11 is installed between the sealing sleeve 9 and the fitting 10. A guide plate 12 is installed at the bottom of the fitting 10. A conductive cavity 13 is provided between the guide plate 12 and the fitting 10. Two sets of side electrodes 15 are installed inside the fitting 10. A conductive silver block 16 is installed inside the conductive cavity 13. The lower ends of the two sets of side electrodes 15 extend into the conductive cavity and are connected to the conductive silver block 16.

[0054] The side electrode 15 is installed inside the mounting kit 10 via the guide sleeve 28.

[0055] The present invention also provides a method for testing the electrical stability of high temperature and high pressure. The sealing sleeve 9, together with the fitting 10 and the locking ring 11, is removed from the upper end of the vessel body 8. Then, the vessel body 8 is filled with the liquid to be tested. The sealing sleeve 9, the fitting 10 and the locking ring 11 are then installed and fixed on the upper end of the vessel body 8. The liquid to be tested is placed inside the pressure stabilizing component 3. The pressure stabilizing pump 4, the heating plate 22, the motor 23 and the controller 7 are started to test the electrical stability of the liquid to be tested. After the electrical stability test is completed, the liquid inside the vessel body 8 is drained through the drain valve 5, and then the vessel body 8 and the pressure stabilizing component 3 are cleaned.

[0056] Specifically, placing the liquid to be tested inside the pressure stabilizing assembly 3 involves opening the sealing cover 27 at the top of the pressure stabilizing cylinder 25; placing the liquid to be tested inside the pressure stabilizing cylinder 25 above the sliding piston 26, and then closing the sealing cover 27.

[0057] Although embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, guided by the specification, can make many other modifications without departing from the scope of the claims of the present invention, and all of these modifications are within the scope of protection of the present invention.

Claims

1. A high temperature high voltage electrical stability test apparatus, characterized by, The utility model provides a test kettle, including test kettle body (1), the inlet end of test kettle body (1) is connected with liquid inlet valve (2), pressure stabilizing component (3) and pressure stabilizing pump (4) in proper order, the bottom end of test kettle body (1) is connected with blowdown valve (5), test kettle body (1) is connected with control instrument (7), test kettle body (1) includes kettle body (8), the top end of kettle body (8) is installed with sealing sleeve (9), sealing sleeve (9) inside is installed with assembly sleeve (10), locking ring (11) is installed between sealing sleeve (9) and assembly sleeve (10), the bottom of assembly sleeve (10) is installed with guide vane (12), guide electrically conducting cavity (13) is arranged between guide vane (12) and assembly sleeve (10), two groups of side head electrodes (15) are installed in assembly sleeve (10), and electrically conducting silver block (16) is installed in guide electrically conducting cavity (13), and the lower end of two groups of side head electrodes (15) extends to guide electrically conducting cavity and is connected with electrically conducting silver block (16).

2. The high temperature high voltage electrical stability test device of claim 1, wherein, The upper end of side head electrode (15) is connected with control instrument (7) through wire (6).

3. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Two groups of operating handles (21) are symmetrically installed on sealing sleeve (9).

4. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Liquid placing straight hole (19) is arranged in assembly sleeve (10), the top end of liquid placing straight hole (19) is connected with liquid placing cavity (20), the lower end of liquid placing straight hole (19) is connected with guide electrically conducting cavity (13), and liquid placing straight hole (19) and liquid placing cavity (20) are located between two groups of side head electrodes (15).

5. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Heating plate (22) is arranged on the surface of kettle body (8).

6. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Motor (23) is installed at the bottom of kettle body (8), stirring paddle (24) is connected on motor (23), and stirring paddle (24) is located in kettle body (8).

7. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Liquid inlet hole (17) is arranged on the upper portion of one side of kettle body (8), and liquid outlet hole (18) is arranged on the lower portion of one side of kettle body (8); liquid inlet hole (17) is connected with liquid inlet valve (2), pressure stabilizing component (3) and pressure stabilizing pump (4) in proper order; liquid outlet hole (18) is connected with blowdown valve (5).

8. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Pressure stabilizing component (3) includes pressure stabilizing cylinder (25), sliding piston (26) is arranged in pressure stabilizing cylinder (25), the bottom end of pressure stabilizing cylinder (25) is connected with pressure stabilizing pump (4), sealing cover (27) is arranged on the top of pressure stabilizing cylinder (25), and sealing cover (27) is connected with liquid inlet valve (2).

9. The high temperature high voltage electrical stability test apparatus of claim 1, wherein, Side head electrode (15) is installed in assembly sleeve (10) through guide sleeve (28).

10. A high temperature high voltage electrical stability test method, characterized by, The high temperature and high pressure electric stability testing device according to any one of claims 1-9, comprising: removing the sealing sleeve (9) together with the assembly sleeve (10) and the locking ring (11) from the upper end of the kettle body (8), then filling the kettle body (8) with the liquid to be detected, then installing and fixing the sealing sleeve (9), the assembly sleeve (10) and the locking ring (11) at the upper end of the kettle body (8), placing the liquid to be detected inside the pressure stabilizing assembly (3), starting the pressure stabilizing pump (4), the heating plate (22), the motor (23) and the control instrument (7), detecting the electric stability of the liquid to be detected, after the electric stability detection is completed, draining the liquid in the kettle body (8) through the blowdown valve (5), and then cleaning the kettle body (8) and the pressure stabilizing assembly (3).

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