Anode anti-blocking device for well

Abstract

The invention discloses an anode anti-blocking device for a well. The device comprises a core tube, a sliding assembly, a sealing joint and a partition assembly, a fluid channel for circulating a solution is arranged in the core tube; the sliding assembly comprises a sliding push tube, an anode assembly and an energy storage element, and the energy storage element can deform in the axial direction of the core tube to store energy; an extrusion cavity is formed among the core tube, the sealing joint and the sliding push tube, the fluid channel is divided into two blind channels which are not communicated with each other by the partition assembly, and the blind channel close to one side of a fluid outlet of the core tube is communicated with the extrusion cavity. A high-pressure extrusion medium enters the extrusion cavity through the pressure applying opening, and the anode assembly and the energy storage element can slide relative to the core tube due to the sliding push tube; and the energy storage element releases the stored energy and pushes the sliding push pipe and the anode assembly to reset, so that the anode assembly and the inner wall of the sleeve continuously rub and vibrate to successfully release clamping, and the technical problem of clamping caused by eccentric wear between the anode tool and the inner wall of the sleeve is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum extraction, and in particular relates to an anode anti-sticking device for a well. Background Art

[0002] At present, an anode anti-corrosion device is often installed in the wellhead casing of oil fields and mines. It is connected to the oil pipe and brought into the oil and water well. The contact arm contacts the inner wall of the casing to achieve the purpose of sacrificial anode protection of the casing and realize the goal of corrosion prevention inside the casing. However, it is found in actual use that for some inclined wells or oil wells with serious wax and scaling downhole, traditional anode tools are easily stuck with the inner wall of the casing or stuck by wax and scaling. Under normal circumstances, a lot of resources are required to salvage and lift them, and the maintenance cycle is long, which wastes manpower and material resources. Summary of the invention

[0003] The object of the present invention is to provide an anode anti-sticking device for wells to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above object, the present invention provides a well anode anti-sticking device, comprising:

[0005] A core tube, wherein a fluid channel for circulating a solution is provided inside the core tube;

[0006] A sliding assembly, the sliding assembly comprises a sliding push tube, an anode assembly and an energy storage element, wherein the sliding push tube, the anode assembly and the energy storage element are sequentially slidably sleeved on the outer side of the core tube along the axial direction of the core tube; the sliding push tube is arranged at an end of the core tube close to the fluid outlet; an end of the energy storage element away from the anode assembly is detachably connected to the core tube, and the energy storage element can deform along the axial direction of the core tube to store energy;

[0007] A sealing joint, wherein the sealing joint is detachably sleeved on one end of the core tube fluid outlet, and the end of the sealing joint close to the anode assembly is sleeved on the outer side of the sliding push tube, an extrusion cavity is arranged between the core tube, the sealing joint and the sliding push tube, a pressure port for conducting the fluid channel and the extrusion cavity is arranged on the core tube, and a pressure relief port is opened on the sealing joint, and the pressure port and the pressure relief port are arranged in sequence from the fluid outlet to the fluid inlet;

[0008] A partition assembly is detachably connected to one side of the core tube fluid outlet, and the partition assembly divides the fluid channel into two blind passages that are not connected to each other, and the blind passage close to the core tube fluid outlet is connected to the extrusion chamber.

[0009] Optionally, a first coupling is detachably connected to one end of the core tube close to the fluid outlet, and the first coupling is detachably connected to the sealing joint.

[0010] Optionally, one end of the core tube close to the fluid inlet is detachably connected to a second coupling hoop, the outer side of the core tube is provided with a support sleeve, one side of the support sleeve is detachably connected to the second coupling hoop, and the other end of the support sleeve is detachably connected to the energy storage element.

[0011] Optionally, the energy storage element is a spring.

[0012] Optionally, the partition assembly includes a sealing seat, which is detachably connected to the inside of the core tube, and the sealing seat is arranged on a side of the pressure port away from the fluid outlet.

[0013] Optionally, the sealing seat is a sealing ball seat, which is provided with a flow hole, and the flow hole is used to connect the two blind passages; the sealing ball seat is clamped with a sealing ball, the flow hole is in a closed state, and the two blind passages are not connected.

[0014] Optionally, a ball seat fixing tube and an internal support tube are inserted into the core tube, and the ball seat fixing tube and the internal support tube are respectively arranged on both sides of the sealing ball seat and abut against it, the ball seat fixing tube is arranged at one end close to the fluid outlet, and the diameter of the sealing ball is smaller than the inner diameter of the ball seat fixing tube.

[0015] Optionally, a receiving cavity for receiving descaling particles is provided between the inner support tube and the core tube, and a plurality of communication holes are provided on the inner support tube, and the communication holes are used to connect the fluid channel and the receiving cavity.

[0016] Optionally, the anode assembly comprises:

[0017] An insulating tube, wherein the insulating tube is slidably sleeved on the outer side of the core tube, one end of the insulating tube abuts against the sliding push tube, and the other end of the insulating tube is detachably connected to the energy storage element;

[0018] A sacrificial anode tube, wherein the sacrificial anode tube is sleeved on the outside of the insulating tube, and a first insulating sleeve is provided between one end of the sacrificial anode tube and the sliding push tube;

[0019] A support element, wherein the support element is sleeved on the outer side of the insulating tube, the other end of the sacrificial anode tube is detachably connected to one end of the support element, and a second insulating sleeve is provided between the other end of the support element and the energy storage element;

[0020] An elastic contact arm is detachably connected to the outside of the supporting element, and is used to contact the inner wall of the external sleeve to make the sacrificial anode tube electrically conductive with the external sleeve.

[0021] Optionally, the supporting element comprises:

[0022] An energy storage support tube, wherein the energy storage support tube is sleeved on the outside of the insulating tube, and the energy storage support tube is arranged between the sliding push tube and the energy storage element;

[0023] The pressure ring is provided in two groups and is respectively arranged at the two ends of the energy storage support tube, and the end of the elastic contact arm is clamped between the energy storage support tube and the pressure ring.

[0024] Compared with the prior art, the present invention has the following advantages and technical effects:

[0025] When the well anode anti-stuck device provided by the present invention is in use, the fluid channel is divided into two blind passages which are not connected to each other through the partition component, the blind passage close to the fluid outlet side of the core tube is connected to the extrusion chamber and the blind passage is externally connected to an extrusion medium source, and the high-pressure extrusion medium is supplied to the blind passage connected thereto through the extrusion medium source, and the high-pressure extrusion medium enters the extrusion chamber through the pressure port, and because the sliding push tube, the anode assembly and the energy storage element can slide relative to the core tube, under the action of the continuous supply of the high-pressure extrusion medium, the space of the extrusion chamber becomes larger, the sliding push tube starts to slide, and then pushes the anode assembly to slide, and the energy storage element starts to store energy until the pressure relief port is in the open state, the extrusion medium is ejected from the pressure relief port, and the extrusion medium source stops supplying the extrusion medium; the energy storage element releases the stored energy, pushes the sliding push tube and the anode assembly to reset, and further drives the anode assembly to slide, and repeats the above process, so that the anode assembly and the inner wall of the casing are continuously rubbed and vibrated, and the jam is successfully released, thereby solving the technical problem of eccentric wear between the anode tool and the inner wall of the casing causing jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the anode anti-stuck device for wells of the present invention;

[0028] Figure 2 It is a partial schematic diagram of the anode anti-sticking device for wells of the present invention;

[0029] Figure 3 Another partial schematic diagram of the anode anti-sticking device for wells of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the anode anti-stuck device for a well in which the pressure relief port is in a sealed state according to the present invention;

[0031] Figure 5It is a structural schematic diagram of the anode anti-stuck device for a well in which the pressure relief port is in an open state;

[0032] Figure 6 It is a schematic diagram of the internal support tube structure of the present invention.

[0033] Among them, 1. the first coupling, 2. the ball seat fixing tube, 3. the core tube, 4. the sealing joint, 5. the first sealing ring, 6. the first sliding sealing ring, 7. the second sliding sealing ring, 8. the sealing ball seat, 9. the sliding push tube, 10. the accommodating cavity, 11. the internal support tube, 12. the first insulating sleeve, 13. the sacrificial anode tube, 14. the first pressure ring, 15. the elastic contact arm, 16. the energy storage support tube, 17. the insulating tube, 18. the second pressure ring, 19. the second insulating sleeve, 20. the fixing joint, 21. the energy storage element, 22. the support sleeve, 23. the second coupling, 24. the fluid channel, 25. the extrusion cavity, 26. the pressure port, 27. the pressure relief port, 28. the flow hole, 29. the sealing ball. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] The present invention provides an anode anti-sticking device for wells, which is mainly used in oil wells; the device comprises a core tube 3, a sliding component, a sealing joint 4 and a partition component.

[0036] A fluid channel 24 for circulating the solution is provided inside the core tube 3; the two ends of the fluid channel 24 are divided into a fluid inlet and a fluid outlet along the flow direction of the solution. The solution mentioned here is the solution mainly circulating inside the core tube 3, not the extrusion medium described later; in this specific embodiment, the solution refers to crude petroleum liquid.

[0037] The sliding assembly includes a sliding push tube 9, an anode assembly and an energy storage element 21, which are sequentially slidably sleeved on the outer side of the core tube 3 along the axial direction of the core tube 3; the sliding push tube 9 is arranged at one end of the core tube 3 close to the fluid outlet; the end of the energy storage element 21 away from the anode assembly is detachably connected to the core tube 3, and the energy storage element 21 can deform along the axial direction of the core tube 3 to store energy.

[0038] The sealing joint 4 is detachably sleeved on one end of the fluid outlet of the core tube 3, and one end of the sealing joint 4 close to the anode assembly is sleeved on the outer side of the sliding push tube 9. An extrusion cavity 25 is provided between the core tube 3, the sealing joint 4 and the sliding push tube 9. A pressure port 26 for conducting the fluid channel 24 and the extrusion cavity 25 is provided on the core tube 3. A pressure relief port 27 is provided on the sealing joint 4. The pressure port 26 and the pressure relief port 27 are arranged in sequence from the fluid outlet to the fluid inlet.

[0039] The partition assembly is detachably connected to the fluid outlet side of the core tube 3 , and the partition assembly divides the fluid channel 24 into two blind passages that are not connected to each other. The blind passage close to the fluid outlet side of the core tube 3 is connected to the extrusion chamber 25 .

[0040] In this embodiment, the pressure relief port 27 has two states, namely a sealed state and an open state: when the pressure relief port 27 is in the sealed state, the sliding push tube 9 blocks the pressure relief port 27, and the pressure relief port 27 and the extrusion chamber 25 are not connected; when the pressure relief port 27 is in the open state, the pressure relief port 27 and the extrusion chamber 25 are connected; wherein, the sealed state and the open state of the pressure relief port 27 are switched by the position of the sliding push tube 9 relative to the pressure relief port 27.

[0041] Preferably, a first sealing ring 5 is provided at the connection between the sealing joint 4 and the core tube 3, and two sliding sealing rings are provided between the sealing joint 4 and the sliding push tube 9, namely a first sliding sealing ring 6 and a second sliding sealing ring 7. In this embodiment, the sealing of the extrusion chamber 25 is ensured by a multi-seal structure to prevent the extrusion medium from flowing out from the gaps between the sealing joint 4 and the core tube 3 and between the sealing joint 4 and the sliding push tube 9 when the extrusion medium source supplies the extrusion medium to the extrusion chamber 25, thereby affecting the movement effect of the sliding push tube 9. The extrusion medium in this embodiment can be a fluid medium such as air and water.

[0042] When the well anode anti-stuck device provided by the present invention is used, the fluid channel 24 is divided into two blind passages that are not connected to each other by the partition component. The blind passage near the fluid outlet side of the core tube 3 is connected to the extrusion chamber 25 and the blind passage is externally connected to the extrusion medium source. The high-pressure extrusion medium is supplied to the blind passage connected thereto by the extrusion medium source. The high-pressure extrusion medium enters the extrusion chamber 25 through the pressure port 26. Since the sliding push tube 9, the anode assembly and the energy storage element 21 can slide relative to the core tube 3, under the continuous supply of the high-pressure extrusion medium, the extrusion chamber 25 The space becomes larger, the sliding push tube 9 starts to slide, and then pushes the anode assembly to slide, and the energy storage element 21 starts to store energy until the pressure relief port 27 is in the open state, the extrusion medium is ejected from the pressure relief port 27, and the extrusion medium source stops supplying the extrusion medium; the energy storage element 21 releases the stored energy, pushes the sliding push tube 9 and the anode assembly to reset, and further drives the anode assembly to slide, and repeats the above process, so that the anode assembly and the inner wall of the casing are continuously rubbed and vibrated, and the jam is successfully released, thereby solving the technical problem of eccentric wear between the anode tool and the inner wall of the casing, which leads to jamming.

[0043] Further optimizing the scheme, the end of the core tube 3 near the fluid outlet is detachably connected with a first coupling 1, and the first coupling 1 and the sealing joint 4 are detachably connected. The first coupling 1 is used to connect and conduct the core tube 3 with an external pipe or an external connector, and the sealing joint 4 is detachably connected to achieve relative fixation of the sealing joint 4 with respect to the core tube 3. Preferably, the first coupling 1 is threadedly connected and sleeved on the outside of the core tube 3, and the sealing joint 4 is threadedly connected and sleeved on the outside of the first coupling 1; the first coupling 1 and the core tube 3 are detachably connected, and the sealing joint 4 and the first coupling 1 are detachably connected. Of course, the first coupling 1 and the core tube 3, and the sealing joint 4 and the first coupling 1 can also be detachably connected by plugging, clamping, etc.

[0044] Further optimized solution, the end of the core tube 3 close to the fluid inlet is detachably connected with a second coupling 23, the outer side of the core tube 3 is sleeved with a support sleeve 22, one side of the support sleeve 22 is detachably connected to the second coupling 23, and the other end of the support sleeve 22 is detachably connected to the energy storage element 21. The second coupling 23 is used to connect and conduct the core tube 3 with an external pipe or an external connector, and the second coupling 23 and the support sleeve 22 are detachably connected to achieve relative fixation of the support sleeve 22 relative to the core tube 3, and then achieve detachable connection of the end of the energy storage element 21 away from the anode assembly with the core tube 3, thereby ensuring that one end of the energy storage element 21 is fixed relative to the core tube 3, ensuring that the energy storage element 21 can deform along the axial direction of the core tube 3 to store energy, and can release energy later to push the anode assembly and the sliding push tube 9 to reset.

[0045] Preferably, the second coupling 23 is threadedly connected and sleeved on the outside of the core tube 3, and the support sleeve 22 is threadedly connected and sleeved on the outside of the second coupling 23; the detachable connection between the second coupling 23 and the core tube 3, and between the second coupling 23 and the support sleeve 22 is achieved by means of threaded connection. Of course, the detachable connection between the second coupling 23 and the core tube 3, and between the second coupling 23 and the support sleeve 22 can also be achieved by means of plug-in, clip-on, etc.

[0046] Further optimization scheme, the energy storage element 21 is a spring, the spring sleeve is arranged outside the core tube, one end of the spring is detachably connected to the anode assembly, the other end of the spring is detachably connected to the core tube 3, and in this embodiment, the other end of the spring is fixedly connected to the support sleeve 22. When the anode assembly squeezes the spring, the spring deforms axially along the core tube 3 to store energy. Of course, the energy storage element 21 in the present application can also adopt other structures, such as plastic bellows, etc.

[0047] The partition assembly can adopt an integrated structure or a split structure to divide the fluid channel 24 into two blind passages that are not connected to each other. When the partition assembly adopts an integrated structure, a sealing plate, a sealing cylinder and the like can be adopted. For example, when the partition assembly adopts a sealing cylinder, the sealing cylinder can be detachably inserted in the core tube 3, and the bottom of the sealing cylinder is a closed structure. The sealing cylinder divides the fluid channel 24 into two blind passages that are not connected to each other. A through hole that is connected to the pressure port 26 is provided on the inner wall of the sealing cylinder, so that the extruded medium can enter the extrusion chamber 25 through the sealing cylinder, the through hole and the pressure port 26.

[0048] Preferably, the partition assembly includes a sealing seat, which is detachably connected to the inside of the core tube 3 and is arranged on the side of the pressure port 26 away from the fluid outlet. In this embodiment, the sealing seat is detachably connected to the inside of the core tube 3, and the sealing ball seat divides the fluid channel 24 into two blind passages that are not connected to each other, and the sealing ball seat is arranged on the side of the pressure port 26 away from the fluid outlet, so that the blind passage close to the fluid outlet side of the core tube 3 is connected to the extrusion chamber 25, ensuring that the extruded medium can enter the extrusion chamber 25 through the pressure port 26; the sealing seat has a simple structure and is easy to operate. The sealing seat in this embodiment can be detachably connected to the inside of the core tube 3 by plugging, threading, snapping, etc.

[0049] When the partition assembly adopts a split structure, the conduction and non-conduction of the two blind passages are achieved through the split structure. Preferably, the sealing seat is a sealing ball seat 8, and the sealing ball seat 8 is provided with a flow hole 28, and the flow hole 28 is used to conduct the two blind passages; the sealing ball seat 8 is clamped with a sealing ball 29, and the flow hole 28 is in a closed state, and the two blind passages are not conductive. In this embodiment, the sealing seat is a sealing ball seat 8 with a flow hole 28, and the sealing ball seat 8 is detachably connected to the core tube 3. When the unblocking operation is not required, the sealing ball 29 and the sealing ball seat 8 are in a non-clamped state, and the flow hole 28 is in a conductive state, that is, the fluid channel 24 can pass the solution normally. When the unblocking operation is required, the sealing ball 29 is engaged in the sealing ball seat 8, the flow hole 28 is in a closed state, and the two blind passages are not connected, ensuring that the extruded medium can enter the extrusion chamber 25 through the pressure port 26. By controlling whether the sealing ball 29 and the sealing ball seat 8 are engaged, whether the flow hole is connected is controlled to ensure that the sealing ball 29 and the sealing ball seat 8 can play a role in isolating the fluid channel 24. In the non-unblocking state, only the sealing ball 29 and the sealing ball seat 8 need to be separated to ensure that the fluid channel can flow the solution normally, and the operation is simple.

[0050] Preferably, the core tube 3 is plugged with a ball seat fixing tube 2 and an internal support tube 11, which are respectively arranged on both sides of the sealing ball seat 8 and abut against it, and the ball seat fixing tube 2 is arranged at one end close to the fluid outlet, and the diameter of the sealing ball 29 is smaller than the inner diameter of the ball seat fixing tube 2. In this embodiment, the first coupling 1 and the second coupling 23 are arranged at both ends of the core tube 3, and the ball seat fixing tube 2, the sealing ball seat 8 and the internal support tube 11 are squeezed together by the first coupling 1 and the second coupling 23, and the three are limited at the same time, so as to ensure that the ball seat fixing tube 2, the sealing ball seat 8 and the internal support tube 11 are fixed relative to the core tube 3. Of course, the ball seat fixing tube 2 can also be detachably connected to the core tube 3 by means of plug-in connection, threaded connection, etc. The diameter of the sealing ball 29 is smaller than the inner diameter of the ball seat fixing tube 2, ensuring that the sealing ball 29 can move in the ball seat fixing tube 2, making it easy to put the sealing ball 29 into the sealing ball seat 8 for engagement, and the sealing ball 29 is fixedly connected to a traction line. After the card is successfully released and the pipeline is pulled out, the traction line can be used to control the sealing ball 29 and the sealing ball seat 8 to separate, ensuring that the sealing ball 29 can be taken out from the ball seat fixing tube 2.

[0051] Further optimization scheme, a receiving chamber 10 for receiving descaling particles is provided between the internal support tube 11 and the core tube 3, and a plurality of communication holes are provided on the internal support tube 11, and the communication holes are used to conduct the fluid channel 24 and the receiving chamber 10. The receiving chamber 10 is filled with descaling particles, and after the crude oil and other solutions enter the core tube 3, the descaling agent is dissolved. Since a cross baffle is installed in the internal support tube 11, the large particle agent cannot be directly flushed out, so that the output of the descaling agent is stable, the blockage of the oil pipeline is improved, and the crude oil is prevented from forming crystal scale inside the core tube 3.

[0052] According to a further optimized solution, the anode assembly includes an insulating tube 17 , a sacrificial anode tube 13 , a supporting element and an elastic contact arm 15 .

[0053] The insulating tube 17 is slidably sleeved on the outer side of the core tube 3, one end of the insulating tube 17 is in contact with the sliding push tube 9, and the other end of the insulating tube 17 is detachably connected to the energy storage element 21; the insulating tube 17 is used to insulate the core tube 3 from other components or structures in the anode assembly to protect the core tube 3.

[0054] The sacrificial anode tube 13 is sleeved on the outside of the insulating tube 17, and a first insulating sleeve 12 is provided between one end of the sacrificial anode tube 13 and the sliding push tube 9; the sacrificial anode refers to the case where the electrochemical theoretical metal is used as the anode, and the anode is gradually consumed with the outflowing current. The sacrificial anode tube 13 in the present application is sleeved on the insulating tube 17, and the sacrificial anode tube 13 is consumed to protect the external casing from corrosion, thereby achieving the goal of corrosion prevention inside the casing. The sacrificial anode tube 13 is insulated from the sliding push tube 9 by the first insulating sleeve 12 to prevent the sliding push tube 9 from being used as an anode and corroded.

[0055] The support element is sleeved on the outside of the insulating tube 17, and the other end of the sacrificial anode tube 13 is detachably connected to one end of the support element. A second insulating sleeve 19 is provided between the other end of the support element and the energy storage element 21; the second insulating sleeve 19 insulates the support element and the energy storage element 21 to prevent the energy storage element 21 from being treated as an anode and corroded. The support element is provided between the sacrificial anode tube 13 and the energy storage element 21 to support both, and applies the thrust of the sacrificial anode tube 13 to the energy storage element 21 to prevent the elastic contact arm 15 from deforming and absorbing energy.

[0056] The elastic contact arm 15 is detachably connected to the outer side of the support element. The elastic contact arm 15 is used to contact the inner wall of the external sleeve to make the sacrificial anode tube 13 electrically conductive with the external sleeve. The electrical connection between the external sleeve and the sacrificial anode tube 13 is achieved through the elastic contact arm 15, thereby consuming the sacrificial anode tube 13 and preventing the external sleeve from being corroded. There are three elastic contact arms 15, which are arranged in a ring on the outer side of the support element.

[0057] In the present technical solution, the sacrificial anode tube 13, supporting element and insulating tube 17 in the anode assembly are all rigid structures. Theoretically, no deformation of the core tube 3 in the axial direction occurs. The sliding push tube 9 pushes the anode assembly to move, thereby pushing the energy storage element 21 to deform along the axial direction of the core tube 3 to store energy.

[0058] Preferably, the support element comprises:

[0059] An energy storage support tube 16, which is sleeved on the outside of the insulating tube 17 and is arranged between the sliding push tube 9 and the energy storage element 21;

[0060] The pressure ring is provided with two groups and is respectively arranged at the two ends of the energy storage support tube 16. The end of the elastic contact arm 15 is clamped between the energy storage support tube 16 and the pressure ring. The pressure ring is provided with two first pressure rings 14 and second pressure rings 18, which are respectively arranged at the two ends of the elastic contact arm 15.

[0061] In this specific embodiment, the two ends of the elastic contact arm 15 are fixed by the pressure ring and the energy storage support tube 16, so that the elastic contact arm 15 is distributed in an arc shape, and the elastic contact arm 15 is connected with the sleeve in abutment, thereby realizing electrical conduction between the elastic contact arm 15 and the external sleeve. The two ends of the elastic contact arm 15 are supported by the energy storage support tube 16 and the pressure ring to prevent the elastic contact arm 15 from being deformed. The energy storage support tube 16 completely applies the force it receives to the energy storage element 21, preventing the elastic contact arm 15 from being deformed due to external force.

[0062] The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for a person skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0063] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0064] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A well anode anti-stuck device, characterized in that: include A core tube (3), wherein a fluid channel (24) for circulating a solution is provided inside the core tube (3); A sliding assembly, the sliding assembly comprising a sliding push tube (9), an anode assembly and an energy storage element (21), the sliding push tube (9), the anode assembly and the energy storage element (21) being sequentially slidably sleeved on the outer side of the core tube (3) along the axial direction of the core tube (3); the sliding push tube (9) being arranged at an end of the core tube (3) close to the fluid outlet; an end of the energy storage element (21) away from the anode assembly is detachably connected to the core tube (3), and the energy storage element (21) is capable of deforming along the axial direction of the core tube (3) to store energy; A sealing joint (4), wherein the sealing joint (4) is detachably sleeved on one end of the fluid outlet of the core tube (3), and one end of the sealing joint (4) close to the anode assembly is sleeved on the outer side of the sliding push tube (9). An extrusion cavity (25) is provided between the core tube (3), the sealing joint (4) and the sliding push tube (9). A pressure port (26) for conducting the fluid channel (24) and the extrusion cavity (25) is provided on the core tube (3). A pressure relief port (27) is provided on the sealing joint (4), and the pressure port (26) and the pressure relief port (27) are arranged in sequence from the fluid outlet to the fluid inlet. A partition assembly is detachably connected to one side of the fluid outlet of the core tube (3), and the partition assembly divides the fluid channel (24) into two blind passages that are not connected to each other, and the blind passage close to the side of the fluid outlet of the core tube (3) is connected to the extrusion chamber (25).

2. The well anode anti-sticking device according to claim 1, characterized in that: One end of the core tube (3) close to the fluid outlet is detachably connected to a first coupling hoop (1), and the first coupling hoop (1) and the sealing joint (4) are detachably connected.

3. The well anode anti-sticking device according to claim 1, characterized in that: One end of the core tube (3) close to the fluid inlet is detachably connected to a second coupling hoop (23); a support sleeve (22) is sleeved on the outer side of the core tube (3); one side of the support sleeve (22) is detachably connected to the second coupling hoop (23); and the other end of the support sleeve (22) is detachably connected to an energy storage element (21).

4. The well anode anti-sticking device according to claim 1, characterized in that: The energy storage element (21) is a spring.

5. The well anode anti-sticking device according to claim 1, characterized in that: The partition assembly comprises a sealing seat, which is detachably connected to the inside of the core tube (3) and is arranged on a side of the pressure port (26) away from the fluid outlet.

6. The well anode anti-sticking device according to claim 5, characterized in that: The sealing seat is a sealing ball seat (8), and the sealing ball seat (8) is provided with a flow hole (28), and the flow hole (28) is used to conduct the two blind passages; the sealing ball seat (8) is clamped with a sealing ball (29), and the flow hole (28) is in a closed state, and the two blind passages are not conducting.

7. The well anode anti-sticking device according to claim 6, characterized in that: A ball seat fixing tube (2) and an internal support tube (11) are inserted into the core tube (3); the ball seat fixing tube (2) and the internal support tube (11) are respectively arranged on both sides of the sealing ball seat (8) and abut against it; the ball seat fixing tube (2) is arranged at one end close to the fluid outlet; and the diameter of the sealing ball (29) is smaller than the inner diameter of the ball seat fixing tube (2).

8. The well anode anti-sticking device according to claim 7, characterized in that: A receiving cavity (10) for receiving descaling particles is provided between the internal support tube (11) and the core tube (3), and a plurality of communication holes are provided on the internal support tube (11), wherein the communication holes are used to conduct the fluid channel (24) and the receiving cavity (10).

9. The well anode anti-sticking device according to claim 1, characterized in that: The anode assembly comprises: An insulating tube (17), wherein the insulating tube (17) is slidably sleeved on the outer side of the core tube (3), one end of the insulating tube (17) is in contact with the sliding push tube (9), and the other end of the insulating tube (17) is detachably connected to the energy storage element (21); A sacrificial anode tube (13), wherein the sacrificial anode tube (13) is sleeved on the outside of the insulating tube (17), and a first insulating sleeve (12) is provided between one end of the sacrificial anode tube (13) and the sliding push tube (9); a support element, the support element being sleeved on the outside of the insulating tube (17), the other end of the sacrificial anode tube (13) being detachably connected to one end of the support element, and a second insulating sleeve (19) being provided between the other end of the support element and the energy storage element (21); An elastic contact arm (15) is detachably connected to the outside of the supporting element, and the elastic contact arm (15) is used to contact the inner wall of the external sleeve to make the sacrificial anode tube (13) electrically conductive with the external sleeve.

10. The well anode anti-sticking device according to claim 9, characterized in that: The support element comprises: An energy storage support tube (16), wherein the energy storage support tube (16) is sleeved on the outside of the insulating tube (17), and the energy storage support tube (16) is arranged between the sliding push tube (9) and the energy storage element (21); A pressure ring is provided in two groups and is respectively provided at two ends of the energy storage support tube (16); the end of the elastic contact arm (15) is clamped between the energy storage support tube (16) and the pressure ring.

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