Heating equipment for oil well casing aluminum anode machining

Abstract

The invention relates to the technical field of aluminum anode machining, and discloses heating equipment for oil well casing aluminum anode machining, which comprises a bottom frame and further comprises two chucks which are mounted on the bottom frame and can rotate, and the two chucks are coaxially arranged and can be adjusted close to or away from each other so as to clamp an aluminum anode tube; the clamp structure is mounted on the opposite surface of the chuck and can center and fix the aluminum anode tube in an inner supporting or outer clamping manner, and a closed space is formed in the aluminum anode tube after the clamp structure is fixed; the heating part extends into the aluminum anode tube and is used for heating air in the aluminum anode tube and heating the aluminum anode tube in a heat conduction and heat convection manner; and the pressure control assembly can be used for pumping out or filling air in the aluminum anode tube. By switching between low voltage and high voltage in the aluminum anode tube, the aluminum anode tube can correspond to heating states in different time periods, so that the quality of a coating in the aluminum anode tube is improved, and the service life of the aluminum anode tube in a severe environment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum anode processing, in particular to a heating device for processing aluminum anodes of oil well casings. Background Art

[0002] In the protection of oil well casing, aluminum anode acts as a sacrificial anode, protecting the casing from corrosion by sacrificing itself. Therefore, during its processing, more attention is paid to the corrosion resistance and electrochemical activity of the anode, such as coating a special anti-corrosion or conductive coating on its surface and heating it with a heating device to promote the curing and adhesion of the coating.

[0003] In the actual processing process, the shape and design of the oil well casing aluminum anode will vary according to different application scenarios and engineering technical requirements, such as long strips, gang shapes, mesh or grid structures, or tubes or plates, etc., in order to maximize its current distribution efficiency in the soil or underwater.

[0004] Among them, the tubular aluminum anode is designed to be hollow so as to be inserted into the soil around the oil well casing. When the aluminum anode is to be placed in a particularly humid or highly corrosive environment, a coating needs to be applied to the inner wall to provide additional protection. Therefore, whether the aluminum anode is heated evenly during the heating process determines the adhesion quality of the coating and also determines the service life of the aluminum anode in subsequent use. Summary of the invention

[0005] The object of the present invention is to provide a heating device for processing aluminum anodes of oil well casings, so as to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: a heating device for oil well casing aluminum anode processing, comprising a base frame, and further comprising:

[0007] Two chucks mounted on the base frame and capable of rotation, the two chucks being coaxially arranged and capable of being adjusted to move closer or farther away to clamp the aluminum anode tube;

[0008] A clamp structure is installed on the opposite side of the clamping plate, and the clamp structure can fix the aluminum anode tube by inner support or outer clamping, and after fixing, a closed space is formed inside the aluminum anode tube;

[0009] A heating part extending into the aluminum anode tube, and the heating part is used to heat the air in the aluminum anode tube and heat the aluminum anode tube by heat conduction and heat convection;

[0010] A pressure control component can extract or fill air in the aluminum anode tube to switch and adjust the enclosed space in the aluminum anode tube between low pressure and high pressure environments.

[0011] Preferably, a slideway is provided on the top of the base frame, and two sliding blocks are slidably installed in the slideway, a bidirectional screw is rotatably installed in the slideway, the bidirectional screw passes through the two sliding blocks and is threadedly connected to the passing portion, a mounting shaft seat is fixed on the top of the two sliding blocks, and an external tube is fixed at the axis of the mounting shaft seat, a through hole for the external tube to pass through is provided at the center of the chuck, and the chuck and the external tube are rotatably connected.

[0012] Preferably, the pressure control assembly comprises an eccentric cavity which is opened on the outer wall of the clamping surface of the chuck and is eccentrically arranged therewith, a piston box is fixed to one end of the external pipe extending into the eccentric cavity, an internal pipe which is coaxially arranged with the external pipe is also fixed to the outer wall of the piston box, the internal pipe and the external pipe are both connected with the piston box, a piston block is slidably mounted on the inner wall of the piston box, push rods are fixed to the outer walls on both sides of the piston block, and one end of the two push rods which pass through the side wall of the piston box can slidably contact with the inner wall of the eccentric cavity;

[0013] The pressure control assembly also includes a switching member installed in the inner tube and the outer tube, and the switching member is used to switch the closed space formed by the inner tube and the outer tube in the aluminum anode tube between one-way air intake and one-way air outlet.

[0014] Preferably, the switching member comprises a switching tube, one-way valves are installed on the inner walls of both ends of the switching tube, and the two one-way valves are in opposite directions, a vent hole is opened on the middle tube wall of the switching tube, and the inner walls of the inner tube and the outer tube are both provided with narrow passages, and the switching tube is slidably installed in the narrow passages;

[0015] It also includes a control part that can control the axial sliding adjustment of the switching tube in the narrow passage part.

[0016] Preferably, the control unit includes two electromagnetic rings installed on the outer wall of the external tube, and the two electromagnetic rings are respectively located on the outer walls of the inner tube on both sides of the switching tube, and both ends of the switching tube are installed with ring magnets matching with the electromagnetic rings;

[0017] The control unit also includes an installation groove opened on the outer wall of the piston block, an adjustment block is slidably installed on the inner wall of the installation groove, two card slots are opened on the side wall of the installation groove, elastic card beads that can be embedded in the card slots are installed on the side wall of the adjustment block, and a contact switch connected to the electromagnetic ring electrical signal is installed on the inner wall of the installation groove.

[0018] Preferably, the heating portion comprises a heating element, both ends of which are provided with interfaces, and the heating element is butt-jointed and installed with the opposite ends of the two inner tubes through the interfaces.

[0019] Preferably, the clamp structure includes a plurality of clamp sliders slidably mounted on the outer wall of the chuck, and the plurality of clamp sliders can be adjusted centrifugally or centrifugally on the outer wall of the chuck, each of the clamp sliders is equipped with a fine-tuning part capable of adjusting the position, and a pin hoop is fixed on the fine-tuning part.

[0020] Preferably, the outer wall plane of the fine-tuning member, the outer wall plane of the clamp slider and the outer wall plane of the chuck are arranged flush, and the length of the fine-tuning member is greater than the wall thickness of the aluminum anode tube, and the fine-tuning member and the clamp slider are provided with adjustment scales and pointers.

[0021] Preferably, one end of the external pipe away from the chuck is connected to an external inert gas supply source through a three-way joint, and is connected when the external pipe takes air into the aluminum anode tube.

[0022] Preferably, sealing gaskets are provided on the opposite outer walls of the two chucks and at the contact surfaces with the aluminum anode tube.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention can correspond to the heating state of different time periods by switching between low and high voltage in the aluminum anode tube, thereby improving the quality of the coating inside the aluminum anode tube and further extending its service life in harsh environments.

[0025] 2. Under low pressure, the present invention can reduce the air content in the aluminum anode tube, so that the internal bubbles can overflow in the initial stage of coating curing to make the coating smoother. Secondly, the reduction of air content also means the reduction of oxygen content, which can reduce the oxidation risk of the coating during the curing process, and can also extract the moisture in the aluminum anode tube to avoid its accumulation in the space. Furthermore, the reduction of air content can also enable the coating to be heated slowly in the early stage of curing, prolonging the early curing speed to prevent the coating surface from curing prematurely and causing defects such as orange peel or ripples. This can not only enable the local position after the bubble overflow to be self-repaired under the action of centrifugation, so that the coating can be self-fine-tuned in the early stage, but also the slow heating in the early stage can reduce the internal thermal stress of the coating, thereby achieving the effect of reducing surface defects.

[0026] 3. Under high pressure, the present invention increases the air content in the aluminum anode tube, which can make the gas density higher, better transfer heat, improve the efficiency of heat exchange, and increase the subsequent curing speed. In addition, under high pressure, it helps the coating to form a denser structure during the curing process, thereby achieving the effect of improving the quality of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a front cross-sectional view of the present invention;

[0029] Figure 3 For the present invention Figure 2 A partial enlarged view of the inner and outer pipes;

[0030] Figure 4 For the present invention Figure 3 Cutaway stereograms and partial magnified diagrams from different viewing angles;

[0031] Figure 5 is an enlarged stereoscopic view of the switching tube of the present invention;

[0032] Figure 6 For the present invention Figure 2 Sectional view along AA;

[0033] Figure 7 For the present invention Figure 6 A sectional stereoscopic view and a partial enlarged view of the middle edge BB;

[0034] Figure 8 For the present invention Figure 1 The three-dimensional image and partial enlarged image without the aluminum anode tube;

[0035] Fig. 9 This is a disassembled diagram of the internal pipe and the heating element of the present invention.

[0036] In the figure: 1. base frame; 2. sliding block; 3. mounting shaft seat; 4. external pipe; 5. chuck; 6. aluminum anode tube; 7. bidirectional screw; 8. internal pipe; 9. narrow passage; 10. heating element; 11. eccentric chamber; 12. piston box; 13. piston block; 14. push rod; 15. switching tube; 16. one-way valve; 17. vent hole; 18. ring magnet; 19. electromagnetic ring; 20. mounting groove; 21. adjusting block; 22. elastic card bead; 23. card groove; 24. contact switch; 25. fixture slider; 26. fine adjustment piece; 27. pin hoop. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 9 The present invention provides a technical solution: a heating device for oil well casing aluminum anode processing, comprising a base frame 1, and also comprising:

[0039] Two chucks 5 mounted on the base frame 1 and capable of rotation, the two chucks 5 are coaxially arranged and can be adjusted to move closer or farther away to clamp the aluminum anode tube 6;

[0040] A clamp structure is installed on the opposite side of the clamping plate 5, and the clamp structure can fix the aluminum anode tube 6 by inner support or outer clamping, and after fixation, a closed space is formed inside the aluminum anode tube 6;

[0041] A heating portion extending into the aluminum anode tube 6, and the heating portion is used to heat the air in the aluminum anode tube 6 and heat the aluminum anode tube 6 by heat conduction and heat convection;

[0042] The pressure control component can extract or fill the air in the aluminum anode tube 6 so that the enclosed space in the aluminum anode tube 6 can be switched and adjusted between low-pressure and high-pressure environments.

[0043] When the oil well casing aluminum anode processing heating device is used, it mainly promotes the curing and adhesion of the surface coating of the aluminum anode tube 6 by heating, and the specific method is as follows;

[0044] First, the two chucks 5 are controlled by an external structure to adjust each other so as to clamp the aluminum anode tube 6 to be heated therebetween. Then, the clamp structure on the chuck 5 is used to center the aluminum anode tube 6 by means of internal support or external clamping, so that it can rotate coaxially with the chuck 5 and form a closed space inside the aluminum anode tube. During the rotation of the aluminum anode tube 6, the coating on the surface of the aluminum anode tube 6 is made more uniform by the effect of centrifugal force, so as to prevent the coating from flowing during the curing process and causing uneven thickness in various places, thereby making the quality of the cured coating higher.

[0045] The method of internal support or external clamping depends on whether the coating is added to the inner wall or the outer wall of the aluminum anode tube 6, and is selected according to the situation;

[0046] Then, in the process of the chuck 5 driving the aluminum anode tube 6 to rotate, the heating part heats the air in the aluminum anode tube 6, and heats the aluminum anode tube 6 by heat conduction and heat convection, so that the coating in the aluminum anode tube 6 is cured and heated more evenly. At the same time, the pressure control component first evacuates the aluminum anode tube 6 to switch it to a low pressure state. By reducing the air content in the aluminum anode tube 6, on the one hand, the internal bubbles can be overflowed in the initial stage of coating curing, so that the coating is smoother. Secondly, the reduction in air content also means a reduction in oxygen content, which can reduce the oxidation risk of the coating during the curing process, and can also extract the moisture in the aluminum anode tube 6 to avoid its accumulation in the space. Furthermore, the reduction in air content can also enable the coating to be heated slowly in the early stage of curing, prolonging the curing speed in the early stage, so as to prevent the coating surface from curing prematurely and causing defects such as orange peel or ripples. This not only allows it to self-repair the local position after the bubble overflows under the centrifugal action, so that the coating can be self-adjusted in the early stage, but also the slow heating in the early stage can reduce the internal thermal stress of the coating, thereby achieving the effect of reducing surface defects.

[0047] In the middle and late stages of heating, the coating has completed preliminary curing and needs further curing and adhesion improvement. At this time, the pressure control component fills the aluminum anode tube 6 with air to switch the interior to a high-pressure environment. On the one hand, increasing the air content in the aluminum anode tube 6 can make the gas density higher, better transfer heat, improve the efficiency of heat exchange, and increase the subsequent curing speed. In addition, the high-pressure state helps the coating to form a denser structure during the curing process, thereby achieving the effect of improving the coating quality.

[0048] In this way, the heating state of different time periods can be corresponded by switching between low and high pressure in the aluminum anode tube 6, and the heating efficiency and heat conduction efficiency can be adjusted by adjusting the air concentration, thereby improving the quality of the coating inside the aluminum anode tube 6, thereby achieving its service life in harsh environments;

[0049] It is worth mentioning that after the heating and curing is completed, the heating part stops heating, and at the same time, the pressure control component can extract the air in the aluminum anode tube 6 until the internal air pressure is the same as the external air pressure, and then the aluminum anode tube 6 can be removed. By using the slow pressure reduction method, the cured coating can be prevented from generating new bubbles due to too rapid pressure changes, thereby avoiding affecting the internal stress distribution of the coating.

[0050] The chuck 5 can be driven by an existing motor to rotate, for example, by a transmission belt, etc., which can be specifically achieved by existing methods, so it will not be described in detail in this case.

[0051] In one of the more preferred embodiments, an adjustment method is provided for driving the chucks 5 to move closer to or away from each other;

[0052] A slideway is provided at the top of the base frame 1, and two sliding blocks 2 are slidably installed in the slideway, a bidirectional screw 7 is rotatably installed in the slideway, the bidirectional screw 7 passes through the two sliding blocks 2 and is threadedly connected with the passing portion, a mounting shaft seat 3 is fixed on the top of the two sliding blocks 2, and an external tube 4 is fixed at the axis of the mounting shaft seat 3, a through hole is provided at the center of the chuck 5 for the external tube 4 to pass through, and the chuck 5 and the external tube 4 are rotatably connected.

[0053] See also Figure 1 By rotating the outer handle, the bidirectional screw 7 is driven to rotate, thereby driving the two sliding blocks 2 to move closer to or away from each other, so that the two chucks 5 can clamp or disassemble the aluminum anode tube 6, and the driving structure on the chuck 5 can also be installed on the sliding block 2 to facilitate its installation.

[0054] In one of the more preferred embodiments, an implementation of a pressure control component is provided, which can be specifically referred to in Figure 3 , Figure 4 , Figure 6 and Figure 8 ;

[0055] The pressure control assembly includes an eccentric cavity 11 which is opened on the outer wall of the clamping surface of the chuck 5 and is eccentrically arranged therewith, a piston box 12 is fixed to one end of the external pipe 4 extending into the eccentric cavity 11, an internal pipe 8 which is coaxially arranged with the external pipe 4 is also fixed to the outer wall of the piston box 12, the internal pipe 8 and the external pipe 4 are both connected to the piston box 12, a piston block 13 is slidably mounted on the inner wall of the piston box 12, push rods 14 are fixed to the outer walls of both sides of the piston block 13, and one end of the two push rods 14 which pass through the side wall of the piston box 12 can slide in contact with the inner wall of the eccentric cavity 11;

[0056] The pressure control assembly also includes a switching member installed in the inner tube 8 and the outer tube 4, and the switching member is used to switch the closed space formed by the inner tube 8 and the outer tube 4 in the aluminum anode tube 6 between one-way air intake and one-way air outlet.

[0057] It can be seen from the above content that in the early stage of heating, the aluminum anode tube 6 must be switched to a low-pressure state. At this time, the chuck 5 will rotate relative to the piston box 12 when rotating, and because the eccentric cavity 11 on the chuck 5 is eccentrically arranged, it will contact the push rod 14 during its rotation, and the piston block 13 will be driven to slide back and forth in the piston box 12 through alternating contact with the two push rods 14. In this process, the switching member at this time enables the internal pipe 8 and the external pipe 4 to only unidirectionally vent air to the enclosed space formed in the aluminum anode tube 6. In this way, the air in the aluminum anode tube 6 can be drawn out by the continuous reciprocating movement of the piston block 13, thereby creating a negative pressure state inside it, thereby achieving the above-mentioned coating defoaming and preliminary curing process in the early stage of heating.

[0058] In the middle and late stages of heating, the switching component will switch the internal pipe 8 and the external pipe 4 to only allow one-way air intake into the enclosed space. In this way, as the piston block 13 slides back and forth in the piston box 12, the external air can be pressed into the aluminum anode tube 6, thereby gradually switching from a negative pressure state to a high pressure state, thereby achieving the above-mentioned effect of helping the coating to form a denser structure during the curing process in the middle and late stages of heating, thereby improving the coating quality.

[0059] In this way, the purpose of switching the gas pressure of the aluminum anode tube 6 can be achieved by switching the switching element back and forth.

[0060] In one of the more preferred embodiments, an implementation of a switching member is provided, which can be specifically referred to in Figure 3-5 ;

[0061] The switching member includes a switching tube 15, and one-way valves 16 are installed on the inner walls of both ends of the switching tube 15, and the directions of the two one-way valves 16 are opposite. A vent hole 17 is opened on the middle tube wall of the switching tube 15, and the inner walls of the inner tube 8 and the outer tube 4 are both provided with a narrow passage 9, and the switching tube 15 is slidably installed in the narrow passage 9;

[0062] The control unit is also included, which can control the axial sliding adjustment of the switching tube 15 in the narrow passage 9 .

[0063] Since the two one-way valves 16 in the switching tube 15 are opposite to each other and the narrow passage 9 is provided, the sliding of the one-way valve 16 in the narrow passage 9 can cause one of the one-way valves 16 to slide into the inside thereof, and the air vent 17 provided on the middle tube wall of the switching tube 15 will render the other one-way valve 16 ineffective, that is, the air can flow through the air vent 17 and bypass the other one-way valve 16, so that only one of the two one-way valves 16 can function. In this way, by controlling the sliding adjustment of the switching tube 15 in the narrow passage 9 by the control unit, the inner tube 8 and the outer tube 4 can be adjusted to allow air to flow in only one direction, thereby achieving the above-mentioned exhaust and intake switching effect.

[0064] In one of the more preferred embodiments, an implementation of a control unit is provided, which can be specifically referred to in Figure 7 ;

[0065] The control unit includes two electromagnetic rings 19 installed on the outer wall of the external tube 4, and the two electromagnetic rings 19 are respectively located on the outer wall of the internal tube 8 on both sides of the switching tube 15, and both ends of the switching tube 15 are installed with ring magnets 18 that match the electromagnetic rings 19;

[0066] The control unit also includes an installation groove 20 opened on the outer wall of the piston block 13, and an adjustment block 21 is slidably installed on the inner wall of the installation groove 20. Two card grooves 23 are opened on the side wall of the installation groove 20. The side wall of the adjustment block 21 is installed with an elastic card bead 22 that can be embedded in the card groove 23. The inner wall of the installation groove 20 is installed with a contact switch 24 connected to the electrical signal of the electromagnetic ring 19.

[0067] As can be seen from the previous content, the air extraction and intake in the aluminum anode tube 6 are completed by the reciprocating sliding of the piston block 13 in the piston box 12. In the early stage of heating, as the air pressure in the aluminum anode tube 6 gradually decreases, the air pressure in the piston box 12 will also decrease when the piston block 13 slides. When the air pressure in the piston box 12 drops to a value exceeding the preset value, the tension exerted on the adjustment block 21 by the negative pressure in the piston box 12 will overcome the elastic force of the elastic card bead 22, so that the adjustment block 21 is sucked out of the installation groove 20, and the adjustment block 21 is also disconnected from the contact switch 24. Then the contact switch 24 controls the above-mentioned electromagnetic ring 19 to generate a reverse force on the ring magnet 18, so that the switching tube 15 completes the sliding adjustment, and then the two one-way valves 16 in it complete the switching, and the switching of the air flow direction is completed;

[0068] On the contrary, in the middle and late stages of heating, as the air pressure in the aluminum anode tube 6 gradually increases, the air pressure when the piston block 13 slides in the piston box 12 also gradually increases. When the air pressure exceeds the preset value, the air pressure in the piston box 12 will exert pressure on the regulating block 21, thereby overcoming the elastic force of the elastic card bead 22, causing it to complete the inward movement and reset and re-contact the contact switch 24, and then the contact switch 24 controls the electromagnetic ring 19 again, so that it cooperates with the ring magnet 18 to complete the reset sliding of the switching tube 15, thereby completing the switching of the air flow direction, and after the switching is completed, the above-mentioned purpose of slowly releasing the air pressure in the enclosed space in the aluminum anode tube 6 can also be achieved.

[0069] In one of the more preferred embodiments, the heating portion includes a heating element 10 , both ends of which are provided with interfaces, and the heating element 10 is butt-jointed and installed with the opposite ends of the two inner tubes 8 through the interfaces.

[0070] When installing the heating part, it can be installed on one of the inner tubes 8 first, and then when the two chucks 5 are close to each other, the two inner tubes 8 will be docked, so that the heating element 10 can be installed and powered on. For details, please refer to Figure 8 and Fig. 9 .

[0071] In one of the more preferred embodiments, the clamp structure includes a plurality of clamp sliders 25 slidably mounted on the outer wall of the chuck 5, and the plurality of clamp sliders 25 can be adjusted centrifugally or centrifugally on the outer wall of the chuck 5, and each clamp slider 25 is provided with a fine-tuning part 26 capable of adjusting the position, and a pin hoop 27 is fixed on the fine-tuning part 26.

[0072] The fixture structure can be found in Figure 8 The adjustment method of the clamp slider 25 can be in the form of a machine tool clamp. The existing method can be implemented, so the specific driving structure is no longer shown. The setting of the fine adjustment member 26 can be adjusted according to the subtle parts to correspond to the local conditions of different positions of the aluminum anode tube 6, and then the pin hoop 27 is used to clamp or fix the aluminum anode tube 6 in an internal support manner;

[0073] The pin hoop 27 is preferably cylindrical so that the error of the contact point with the aluminum anode tube 6 is smaller.

[0074] In one of the more preferred embodiments, the outer wall plane of the fine-tuning member 26 and the outer wall plane of the clamp slider 25 are arranged flush with the outer wall plane of the chuck 5, and the length of the fine-tuning member 26 is greater than the wall thickness of the aluminum anode tube 6, and adjustment scales and pointers are provided on the fine-tuning member 26 and the clamp slider 25.

[0075] By setting the outer wall plane of the fine-tuning member 26 and the outer wall plane of the clamp slider 25 flush with the outer wall plane of the chuck 5, it is possible to avoid that when the pin hoop 27 adopts the inner support type to fix the aluminum anode tube 6, the gap between the outer wall planes of the aluminum anode tube 6 and the clamp slider 25 is too large, thereby affecting the creation of a closed space in the aluminum anode tube 6. Similarly, the length of the fine-tuning member 26 is greater than the wall thickness of the aluminum anode tube 6, which can also avoid the adjustment groove where the fine-tuning member 26 is located directly connecting the inside and outside of the aluminum anode tube 6, which is also for better creating a closed space in the aluminum anode tube 6.

[0076] In one of the more preferred embodiments, one end of the external pipe 4 away from the chuck 5 is connected to an external inert gas supply source through a three-way joint, and is connected when the external pipe 4 takes air into the aluminum anode tube 6.

[0077] In order to further reduce the oxidation of the coating during the heating and curing process, when the aluminum anode tube 6 is switched to a high-pressure environment, an inert gas, such as nitrogen or helium, is filled into the tube to reduce the risk of oxidation.

[0078] In one of the more preferred embodiments, sealing gaskets are provided on the opposite outer walls of the two chucks 5 and at the contact surfaces with the aluminum anode tube 6 .

[0079] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating device for processing aluminum anodes of oil well casing, comprising a base frame (1), characterized in that: Also includes: Two chucks (5) mounted on the base frame (1) and capable of rotation, the two chucks (5) being coaxially arranged and capable of being adjusted to move closer or farther apart to clamp the aluminum anode tube (6); A clamp structure is installed on the opposite side of the clamping plate (5), and the clamp structure can fix the aluminum anode tube (6) by internal support or external clamping, and after fixation, a closed space is formed inside the aluminum anode tube (6); A heating portion extending into the aluminum anode tube (6), and the heating portion is used to heat the air in the aluminum anode tube (6) and to heat the aluminum anode tube (6) by means of heat conduction and heat convection; A pressure control component is provided, wherein the pressure control component can extract or fill air in the aluminum anode tube (6) so as to switch and adjust the enclosed space in the aluminum anode tube (6) between a low pressure environment and a high pressure environment.

2. The heating equipment for oil well casing aluminum anode processing according to claim 1 is characterized in that: A slideway is provided at the top of the base frame (1), and two sliding blocks (2) are slidably installed in the slideway. A bidirectional screw (7) is rotatably installed in the slideway. The bidirectional screw (7) passes through the two sliding blocks (2) and is threadedly connected to the penetration point. A mounting shaft seat (3) is fixed on the top of the two sliding blocks (2), and an external tube (4) is fixed at the axis of the mounting shaft seat (3). A through hole is provided at the center of the chuck (5) for the external tube (4) to pass through, and the chuck (5) is rotatably connected to the external tube (4).

3. The heating device for processing aluminum anode of oil well casing according to claim 2 is characterized in that: The pressure control assembly comprises an eccentric cavity (11) which is opened on the outer wall of the clamping surface of the chuck (5) and is eccentrically arranged therewith; a piston box (12) is fixed to one end of the external pipe (4) extending into the eccentric cavity (11); an internal pipe (8) which is coaxially arranged with the external pipe (4) is also fixed to the outer wall of the piston box (12); the internal pipe (8) and the external pipe (4) are both connected to the piston box (12); a piston block (13) is slidably mounted on the inner wall of the piston box (12); push rods (14) are fixed to the outer walls of both sides of the piston block (13); and one end of the two push rods (14) which pass through the side wall of the piston box (12) can be in slidable contact with the inner wall of the eccentric cavity (11); The pressure control assembly also includes a switching member installed in the inner pipe (8) and the outer pipe (4), the switching member being used to switch the closed space formed by the inner pipe (8) and the outer pipe (4) in the aluminum anode tube (6) between one-way air intake and one-way air outlet.

4. The heating device for oil well casing aluminum anode processing according to claim 3 is characterized in that: The switching member comprises a switching tube (15), one-way valves (16) are installed on the inner walls of both ends of the switching tube (15), and the two one-way valves (16) are in opposite directions, a vent hole (17) is opened on the middle tube wall of the switching tube (15), and the inner walls of the inner tube (8) and the outer tube (4) are both provided with narrow passages (9), and the switching tube (15) is slidably installed in the narrow passages (9); It also includes a control portion capable of controlling the axial sliding adjustment of the switching tube (15) in the narrow passage portion (9).

5. The heating device for processing aluminum anodes of oil well casing according to claim 4 is characterized in that: The control unit comprises two electromagnetic rings (19) installed on the outer wall of the external pipe (4), and the two electromagnetic rings (19) are respectively located on the outer walls of the internal pipe (8) on both sides of the switching pipe (15), and both ends of the switching pipe (15) are installed with ring magnets (18) that match the electromagnetic rings (19); The control unit also includes a mounting groove (20) provided on the outer wall of the piston block (13); an adjusting block (21) is slidably mounted on the inner wall of the mounting groove (20); two clamping grooves (23) are provided on the side wall of the mounting groove (20); elastic clamping beads (22) capable of being embedded in the clamping grooves (23) are mounted on the side wall of the adjusting block (21); and a contact switch (24) connected to the electromagnetic ring (19) via an electrical signal is mounted on the inner wall of the mounting groove (20).

6. The heating device for processing aluminum anodes of oil well casing according to claim 3 is characterized in that: The heating portion comprises a heating element (10), both ends of which are provided with interfaces, and are butt-jointed and installed with the opposite ends of the two inner pipes (8) via the interfaces.

7. The heating device for oil well casing aluminum anode processing according to claim 1 is characterized in that: The clamp structure comprises a plurality of clamp sliders (25) slidably mounted on the outer wall of the chuck (5), and the plurality of clamp sliders (25) can be adjusted centrifugally or centrifugally on the outer wall of the chuck (5), each of the clamp sliders (25) is provided with a fine-tuning member (26) capable of adjusting the position, and a pin hoop (27) is fixed on the fine-tuning member (26).

8. The heating device for oil well casing aluminum anode processing according to claim 7, characterized in that: The outer wall plane of the fine-tuning piece (26), the outer wall plane of the clamping slide block (25) and the outer wall plane of the chuck (5) are arranged flush, and the length of the fine-tuning piece (26) is greater than the wall thickness of the aluminum anode tube (6). The fine-tuning piece (26) and the clamping slide block (25) are provided with adjustment scales and pointers.

9. The heating device for processing aluminum anodes of oil well casing according to claim 2, characterized in that: One end of the external pipe (4) away from the chuck (5) is connected to an external inert gas supply source via a three-way joint, and is connected when the external pipe (4) takes in air into the aluminum anode tube (6).

10. The heating device for processing aluminum anodes of oil well casing according to any one of claims 1 to 9, characterized in that: Sealing gaskets are provided on the opposite outer walls of the two chucks (5) and at the contact surfaces with the aluminum anode tube (6).

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