High-power electric heating equipment under producing well pump
By deploying electrical heating equipment for screen pipes, hoist parts and carbon fiber heating bodies under the oil production well pump, the problem of heavy oil entering the pump is solved, and the fluidity of crude oil and reservoir extraction efficiency are improved.
Patent Information
- Application Number
- CN202510196993.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-05-09
AI Technical Summary
The existing technology cannot effectively solve the problem of heavy oil entering the pump, especially in the deep position of the oil pump, and traditional heating technology cannot meet the requirements of high-power power supply.
A high-power electric heating equipment under oil production well pumps is designed, including a heating body made of screen tubes, hanging parts and carbon fibers. The power is converted into heat through transmission cables to heat crude oil and improve its fluidity.
By heating crude oil, it improves its fluidity, and solves the problem of difficult oil entering the pump and achieves more efficient reservoir mining.
Smart Images
Figure CN119957151A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present disclosure relate to the technical field of downhole heating equipment, and in particular, to a high-power electric heating equipment under an oil well pump. Background Art
[0002] In oil extraction, in oil reservoirs such as heavy oil and high-viscosity oil, the crude oil contains colloids, asphalt, wax and other components, resulting in high viscosity of crude oil and great difficulty in extraction. If the viscosity reduction problem cannot be effectively solved, crude oil extraction will be difficult, production will be reduced or even impossible, which will have a great adverse impact on oil field development.
[0003] The main difficulties in its exploitation are the difficulty of pumping heavy oil and the heavy load of the pumping unit. The relationship between the viscosity of heavy oil and temperature is relatively sensitive. By heating the wellbore heavy oil to increase the wellbore crude oil temperature and maintaining the crude oil temperature above the inflection point temperature of the crude oil viscosity, the above exploitation difficulties can be effectively solved.
[0004] As far as the existing technology is concerned, the current supporting heating technology mainly includes electric heating of hollow sucker rods, electric heating of oil casing wellbore, electromagnetic heating of heating cables outside the oil pipe, and hot water circulation, which can effectively solve the problem of heating on the pump to achieve crude oil production. Although heating on the pump can effectively solve the problem of oil flow in the oil pipe, it cannot solve the problem of the difficulty of heavy oil entering the pump. Heating the heavy oil under the pump has become a difficult problem that needs to be solved urgently. The depth of the oil pump is generally about 1000-2500 meters underground. Due to the long transmission distance of the heater power supply cable and the large cable loss, the conventional pump heating technology cannot meet the high-power power supply requirements under the pump. Therefore, it is urgent to improve and optimize the existing technology to solve the above problems. Summary of the invention
[0005] To overcome the above defects, the embodiments of the present disclosure provide a high-power electric heating device under an oil well pump, which solves the problem in the related art that the low temperature of heavy oil leads to poor fluidity and makes it difficult for the heavy oil to enter the pump.
[0006] According to one aspect, at least one embodiment of the present disclosure provides a high-power electric heating device under an oil well pump, which is used to heat the crude oil under the oil pump of the oil well, and is characterized by comprising: A screen pipe, arranged at the inlet of the oil well pump; A hanging piece, arranged on the screen tube; A heating element is arranged on the hanging part and is used to heat the crude oil at the screen pipe. The heating element is made of carbon fiber and is electrically connected to a control cabinet arranged on the ground.
[0007] According to another aspect, in at least one embodiment of the present disclosure, the number of the heating elements is several, and the several heating elements are all electrically connected to the power transmission cable, and further includes: The protection tube is arranged on the outside of all the heating elements.
[0008] According to another aspect, in at least one embodiment of the present disclosure, an oil pipe is provided in the oil production well, and the oil pump is provided at an inlet below the oil pipe, and further comprises: A power transmission cable, arranged in the oil production well, for completing the electrical connection between the heating element and the control cabinet; An oil well power inlet sealing flange, arranged above the oil production well, for fixing the power transmission cable; A cable clamp is arranged on the oil pipe and is used for fixing the power transmission cable.
[0009] According to another aspect, in at least one embodiment of the present disclosure, the hanging member includes: A suspension rod is arranged on the screen tube, and a cable inlet is provided on the suspension rod; A connecting piece is arranged on the suspension rod, and a gap between the connecting piece and the suspension rod forms a cable entry gap, and the cable entry gap is located at a side of the cable entry port; A cable sealing joint, one end of which is arranged on the heating element, and the other end of which is arranged on the connecting piece; The power transmission cable passes through the cable entry gap, the cable entry port, and the cable sealing joint in sequence and is electrically connected to the heating element.
[0010] According to another aspect, in at least one embodiment of the present disclosure, the connecting member includes: A clamping member 1 and a clamping member 2 are mutually clamped, wherein the clamping member 1 has a groove 1 and a pin hole 1 which are connected to each other, and the clamping member 2 has a convex block 1, and the convex block 1 has a lock hole 1, and the convex block 1 is clamped in the groove 1; A lock pin shaft is arranged in the lock hole one and passes through the pin hole one.
[0011] According to another aspect, in at least one embodiment of the present disclosure, a groove 2 communicating with the pin hole 1 is provided on the side wall of the clamping member 1, and a clamping groove is provided on the lock pin shaft; and further comprising: The shaft locking block is slidably arranged in the second groove, and the shaft locking block has a U-shaped opening, and the U-shaped opening is clamped on the clamping groove.
[0012] According to another aspect, in at least one embodiment of the present disclosure, the shaft locking block has an anti-slip groove, and a sliding groove is provided at the bottom of the second groove, and after the shaft locking block slides, the sliding groove is aligned with or cancels the alignment with the anti-slip groove; and further comprising: A sliding pin is slidably arranged in the sliding groove, and the sliding pin is inserted into the anti-slip groove or cancels the insertion after sliding; An elastic member 1 is arranged in the slide groove, one end of the elastic member 1 acts on the bottom of the slide groove, and the other end of the elastic member 1 acts on the sliding pin.
[0013] According to another aspect, in at least one embodiment of the present disclosure, the first clamp has a third groove, the second clamp has a fourth groove, and the third groove and the fourth groove are combined to form the cable entry gap; the first clamp and the second clamp are both provided with a guide groove; and further comprising: The cable fixing member is slidably arranged in the guide groove 1, and the cable fixing member has a spherical head.
[0014] According to another aspect, in at least one embodiment of the present disclosure, the first clamp and the second clamp are both provided with a groove five; the suspension rod is provided with a limiting groove, and further comprises: A sliding member 1, slidably disposed on a side wall of the groove 5; Slider 2 is slidably arranged on the side wall of the groove 5 and abuts against the slide 1, the sliding directions of the slide 2 and the slide 1 are perpendicular to each other, and the slide 2 is inserted into the limit groove or cancels the insertion after sliding; A triggering member is arranged on the suspension rod, and the triggering member is in contact with the sliding member.
[0015] According to another aspect, at least one embodiment of the present disclosure further includes: The elastic member 2 is arranged in the groove 5, one end of the elastic member 2 acts on the sliding member 2, and the other end of the elastic member 2 acts on the side wall of the groove 5.
[0016] The beneficial effects of the embodiments of the present disclosure are: In the present disclosure, when the device is used, the power transmission of the power transmission cable is regulated by a control cabinet arranged on the ground; the power transmission cable uses an armored heating cable in the prior art; the heating element made of carbon fiber is used to convert the power and release the heat to heat the crude oil at the screen pipe, thereby improving the fluidity of the crude oil and solving the problem of difficulty in pumping heavy oil.
[0017] The carbon fiber is made into filaments and arranged in multiple groups of closed stainless steel tubes to form a shell-and-tube heat exchanger structure, which increases the heat release area of the heating element and improves the heating efficiency. At the same time, the heating element made of carbon fiber also has the following advantages: ① Fast heating speed: The heating speed is 2-4 times that of general metal electric heating tubes.
[0018] ② Energy saving and consumption reduction: It can save energy and reduce energy consumption costs during use.
[0019] ③Stable electrical performance: It will not cause damage to electrical circuits during use.
[0020] ④Long service life: The continuous service life of the carbon fiber heating tube can reach more than 6000 hours, and no noise and electromagnetic radiation will be generated during use.
[0021] ⑤ Reduce cable power consumption: By utilizing the high resistivity of carbon fiber heating wire, the power supply can be concentrated on the heater, reducing the power consumption of the power supply cable.
[0022] ⑥ Heater size is reduced: The carbon fiber heating wire has a large surface load and high resistance per unit length, which can effectively reduce the size of the heater and facilitate the installation of the heater. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.
[0024] Figure 1 It is a structural schematic diagram of the overall working state of one embodiment of the present disclosure; Figure 2 for Figure 1 A schematic diagram of the structure of the oil well pump, the screen tube and the heating element in the embodiment; Figure 3 It is a schematic diagram of the structure of the hanging part in the present disclosure; Figure 4 for Figure 3 A partial enlarged view of the middle A; Figure 5 It is a structural schematic diagram of the joint between the suspension rod and the transmission cable in the present disclosure; Figure 6 It is a schematic diagram of the structure of the card part 1 and the card part 2 (first angle) in the present disclosure; Figure 7 for Figure 6 A partial enlarged view of point B in the middle; Figure 8 for Figure 6 A partial enlarged view of point C in the middle; Fig. 9 It is a schematic diagram of the structure of the first and second clamps (second angle) in the present disclosure; Fig.10 It is a structural schematic diagram of the overlapped portion (groove 2) of the suspension rod and the clamping member 1 in the present disclosure; Fig.11 for Fig.10 A partial enlarged view of point D in the middle; Fig.12It is a structural schematic diagram of a lap joint (limiting groove) between a suspension rod and a clamp in the present disclosure; Fig.13 for Fig.12 A partial enlarged view of point E in the middle; Fig.14 It is a schematic diagram of the structure of the lock pin shaft in the present disclosure; In the figure: 1, oil well pump, 2, screen tube, 3, hanging part, 4, heating element, 5, power transmission cable, 6, control cabinet, 7, protection tube, 8, oil well power inlet sealing flange, 9, cable clamp, 10, hanging rod, 11, connecting part, 12, clamp part 1, 13, clamp part 2, 14, groove 1, 15, pin hole 1, 16, protrusion 1, 17, lock hole 1, 18, lock pin shaft, 19, groove 2, 20, clamping groove, 21, lock shaft block, 22, anti-slip groove, 23, slide groove, 24, sliding pin, 25, elastic part 1, 26, groove 3, 27, groove 4, 28, cable entry gap, 29, guide groove 1, 30, cable fixing part, 31, groove 5, 32, limit groove, 33, slide part 1, 34, slide part 2, 35, trigger part, 36, elastic part 2. DETAILED DESCRIPTION
[0025] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.
[0026] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0027] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.
[0028] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0029] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.
[0030] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0031] like Figure 1 to Figure 14 As shown, it shows a high-power electric heating device under an oil well pump in one embodiment of the present disclosure.
[0032] In some examples, the electric heating equipment includes a screen pipe 2, a hanger 3 and a heating element 4, and also includes a protective tube 7, a transmission cable 5, an oil well power inlet sealing flange 8 and a cable clamp 9; when in use, the power transmission of the transmission cable 5 is regulated by a control cabinet 6 arranged on the ground; the transmission cable 5 uses an armored heating cable in the prior art; the heating element 4 made of carbon fiber converts electricity and releases heat to heat the crude oil at the screen pipe 2, thereby improving the fluidity of the crude oil and solving the problem of difficulty in pumping heavy oil.
[0033] The carbon fiber is made into filaments and arranged in multiple groups of closed stainless steel tubes to form a shell-and-tube heat exchanger structure, which increases the heat release area of the heating element 4 and improves the heating efficiency. At the same time, the heating element 4 made of carbon fiber also has the following advantages: ① Fast heating speed: The heating speed is 2-4 times that of general metal electric heating tubes.
[0034] ② Energy saving and consumption reduction: It can save energy and reduce energy consumption costs during use.
[0035] ③Stable electrical performance: It will not cause damage to electrical circuits during use.
[0036] ④Long service life: The continuous service life of the carbon fiber heating tube can reach more than 6000 hours, and no noise and electromagnetic radiation will be generated during use.
[0037] ⑤ Reduce cable power consumption: By utilizing the high resistivity of carbon fiber heating wire, the power supply can be concentrated on the heater, reducing the power consumption of the power supply cable.
[0038] ⑥ Heater size is reduced: The carbon fiber heating wire has a large surface load and high resistance per unit length, which can effectively reduce the size of the heater and facilitate the installation of the heater.
[0039] The heating element 4 is suspended under the screen 2 by the hanging piece 3, so as to heat the crude oil in the target area where the screen 2 is located. The cable clamp 9 is used to fix the transmission cable 5 on the oil pipe of the oil well to improve the stability of the transmission cable 5. The protective tube 7 is used to protect the heating element 4. The protective tube 7 is in the shape of a screen, which facilitates the flow of oil and improves the heat exchange efficiency. At the same time, the protective tube 7 can prevent the heating element 4 from being bumped, deformed, damaged, etc. when entering the well, thereby extending the service life of the equipment.
[0040] like Figure 1 to Figure 14 As shown, it shows a high-power electric heating device under an oil well pump in another embodiment of the present disclosure. In some examples, the structure of the hanging member 3 of the heating equipment is refined, and the specific hanging member 3 includes a hanging rod 10, a connecting member 11 and a cable sealing joint; wherein the connecting member 11 includes a clamping member 12 and a clamping member 2 13 that are arranged in cooperation with each other, and also includes a locking pin shaft 18.
[0041] For example, Figure 2 As shown, when in use, after the lead wire of the heating element 4 is connected to the output end of the transmission cable 5, a high-temperature insulating sealant is poured to form a cable sealing joint. After the seal is cured, the conductivity and insulation performance of the joint can be guaranteed, and the corrosion of the joint by the underground environment can be avoided, thereby extending the service life. The connector 11 is used to fix the cable sealing joint to the suspension rod 10, and at the same time guides and protects the transmission cable 5, avoiding the transmission cable 5 from being bent or squeezed.
[0042] like Figures 3~9As shown, the connecting member 11 uses a clamp 12 and a clamp 13 that cooperate with each other. The clamp 12 and the clamp 13 are symmetrically arranged on the hanger 10, and the clamp 12 and the clamp 13 are both semicircular arc-shaped. When the two are matched together, they wrap the joint between the cable sealing joint and the hanger 10 and fix it. At the same time, with the help of the clamp 12 and the clamp 13, the transmission cable 5 is guided from the outer wall of the oil pipe of the oil well to the bottom of the oil pipe, which is convenient for docking with the heating element 4, ensuring the smoothness of the line and avoiding bending. During installation, first place the clamp 12 and the clamp 2 13 on both sides symmetrically of the suspension rod 10, then align the protrusion 16 with the groove 14, approach each other and clamp them until the protrusion 16 is completely inserted into the groove 14. At this time, the clamp 12 and the clamp 2 13 are clamped in place, and the clamp 12 and the clamp 2 13 complete the wrapped clamping of the suspension rod 10, and then insert the lock pin shaft 18 into the pin hole 15, and push the lock pin shaft 18 along the pin hole 15 until the lock pin shaft 18 passes through the lock hole 17; when the lock pin shaft 18 is fully inserted into the pin hole 15, the connection and fixation between the clamp 12 and the clamp 2 13 are completed, and at the same time, with the help of the pin hole 15 The locking pin shaft 18 is hidden to prevent the locking pin shaft 18 from being exposed to the outside. With the help of the hidden cooperation between the pin hole 15 and the locking pin shaft 18, the exposure of parts can be reduced while completing the connection and fixation. There is a lifting ear at one end of the locking pin shaft 18. When disassembling, the locking pin shaft 18 can be pulled out by hooking the lifting ear with a tool with a hook, and then the clamp 12 and the clamp 2 13 can be separated from the suspension rod 10 in the direction away from each other. With the help of the symmetrical clamping cooperation between the clamp 12 and the clamp 2 13, the connection operation between the suspension rod 10 and the cable sealing joint is facilitated, and the on-site construction operation sequence can be flexibly adjusted to improve the operation efficiency.
[0043] like Figures 3~14 As shown, the structure of the clamp 12 and the clamp 2 13 is further refined, a groove 2 19 connected to the pin hole 15 is added on the side wall of the clamp 12, a clamping groove 20 is provided on the lock pin shaft 18, the clamping groove 20 is located in the groove 2 19, a sliding pin 24 and an elastic member 25 are also added, and the sliding pin 24 is used to fix the lock shaft block 21.
[0044] When in use, the position of the lock pin shaft 18 is fixed by the lock shaft block 21 to prevent the lock pin shaft 18 from being separated from the pin hole 15, causing the connection piece 11 to be separated from the suspension rod 10, causing the cable sealing joint and the heating element 4 to sink in the oil well, and the crude oil heating fails; the position of the lock shaft block 21 is locked and fixed with the help of the sliding pin 24 and the elastic member 25. The elastic member 25 is preferably a spring in the prior art. There is a gap on the side of the slide groove 23 that is connected to the outer side of the clamping member 12. When it is necessary to release the lock, the tool can be inserted into the slide groove 23 along the gap, and then the elastic member 25 is compressed to separate the sliding pin 24 from the anti-slip groove 22, and then the lock shaft block 21 and the lock pin shaft 18 are disassembled in turn to separate the clamping member 12 from the clamping member 2 13.
[0045] like Figures 3~14 As shown, the structures of the clamp 12 and the clamp 2 13 are further refined, a groove 3 26 is added to the clamp 12, and a groove 4 27 is added to the clamp 2 13. The groove 3 26 and the groove 4 27 are combined to form a cable entry gap 28; a guide groove 1 29 is added to both the clamp 12 and the clamp 2 13; and a cable fixing member 30 is added, with the help of which the transmission cable 5 is constrained and fixed to reduce the shaking of the transmission cable 5. In order to improve the stability of the transmission cable 5 at the suspension rod 10, after the clamping piece 12 and the clamping piece 2 13 are clamped, the transmission cable 5 is located in the cable entry gap 28. At this time, the cable fixing piece 30 is taken out, and the spherical head on the cable fixing piece 30 is inserted into the cable entry gap 28. The arc surface on the cable fixing piece 30 is squeezed and contacted with the outer surface of the transmission cable 5 to prevent scratches or cuts on the outer surface of the transmission cable 5; external force is applied to align the cable fixing piece 30 with the guide groove 1 29, and then the cable fixing piece 30 is slid along the guide groove 1 29. With the help of the cable fixing piece 30, multiple transmission cables 5 are distributed in the cable entry gap 28 in sequence. If there is only one transmission cable 5, the position of the transmission cable 5 can be fixed with the help of two cable fixing pieces 30, and the transmission cable 5 can be straightened with the help of the cable fixing piece 30 to avoid bending of the transmission cable 5. The cable fixing piece 30 has multiple sizes and thicknesses, which can expand the application range of the heating device for transmission cables 5 with various diameters.
[0046] like Figures 3~14As shown, the structure of the clamp 12 and the clamp 2 13 is further refined, and a groove 5 31 is added to the clamp 12 and the clamp 2 13; a limit groove 32 is added to the suspension rod 10; a slide 1 33, a slide 2 34, a trigger member 35 and an elastic member 2 36 are also added; when in use, the elastic member 2 36 is in an extended state; a self-locking function is added between the connecting member 11 and the suspension rod 10 through the slide 1 33, the slide 2 34 and the trigger member 35 to prevent the connecting member 11 from sliding, dislocating, or even detaching on the suspension rod 10, causing the heating equipment to fail. During the process, in order to enhance the connection stability between the connecting piece 11 and the suspension rod 10, in the process of the clamping piece 12 and the clamping piece 2 13 approaching each other and being fastened, the suspension rod 10 is located between the clamping piece 12 and the clamping piece 2 13, and as the clamping piece 12 and the clamping piece 2 13 approach each other, the triggering piece 35 gradually approaches the sliding piece 1 33 and is in squeeze contact; with the squeezing effect of the triggering piece 35, the sliding piece 1 33 slides vertically upward along the groove 5 31, and the sliding piece 1 33 squeezes the sliding piece 2 34 to slide in the direction close to the suspension rod 10, and at the same time, the sliding piece 2 34 slides out of the groove 5 31, gradually approaches and is snapped into the limiting groove 32; in the vertical direction of the oil well, with the help of the sliding piece 1 33 and the sliding piece 2 34, the connection stability of the connecting piece 11 and the suspension rod 10 in the vertical direction is enhanced, the misalignment of the connecting piece 11 and the suspension rod 10 is avoided, the consistency of the assembly is improved, and at the same time, the connection stability of the heating equipment in the crude oil can be improved. The elastic member 2 36 is preferably a spring in the prior art. When the clamp 12 is separated from the clamp 2 13, the elastic member 2 36 drives the slide 2 34 to slide away from the suspension rod 10, so that the slide 2 34 slides back into the groove 5 31 and waits for the next operation.
[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.
Claims
1. A high-power electric heating device under an oil well pump, used to heat the crude oil under the oil well pump (1), characterized in that: include: A screen pipe (2) arranged at the inlet of the oil well pump (1); A hanging piece (3) is arranged on the screen tube (2); A heating element (4) is arranged on the hanging member (3) and is used to heat the crude oil at the screen pipe (2). The heating element (4) is made of carbon fiber. The heating element (4) is electrically connected to a control cabinet (6) arranged on the ground.
2. The high-power electric heating device under the oil well pump according to claim 1 is characterized in that: The number of the heating elements (4) is a plurality, and the plurality of heating elements (4) are all electrically connected to the power transmission cable (5), and further comprises: A protective tube (7) is arranged to cover the outside of all the heating elements (4).
3. The high-power electric heating device under the oil well pump according to claim 1 is characterized in that: An oil pipe is provided in the oil production well, and the oil pump (1) is provided at an inlet below the oil pipe, and further comprises: A power transmission cable (5), arranged in the oil production well, for completing the electrical connection between the heating element (4) and the control cabinet (6); An oil well power inlet sealing flange (8), arranged above the oil production well and used for fixing the power transmission cable (5); A cable clamp (9) is arranged on the oil pipe and is used to fix the power transmission cable (5).
4. The high-power electric heating device under the oil well pump according to claim 1 is characterized in that: The hanging member (3) comprises: A suspension rod (10) is arranged on the screen tube (2), and a cable inlet is provided on the suspension rod (10); A connecting member (11) is arranged on the suspension rod (10), the gap between the connecting member (11) and the suspension rod (10) forming a cable entry gap (28), and the cable entry gap (28) is located on the side of the cable entry opening; A cable sealing joint (37), one end of which is arranged on the heating element (4) and the other end of which is arranged on the connecting piece (11); The power transmission cable (5) passes through the cable entry gap (28), the cable entry port, and the cable sealing joint (37) in sequence and is electrically connected to the heating element (4).
5. The high-power electric heating device under the oil well pump according to claim 4 is characterized in that: The connecting member (11) comprises: A clamping member 1 (12) and a clamping member 2 (13) are mutually clamped, the clamping member 1 (12) having a groove 1 (14) and a pin hole 1 (15) which are connected to each other, the clamping member 2 (13) having a protrusion 1 (16), the protrusion 1 (16) having a locking hole 1 (17), and the protrusion 1 (16) being clamped in the groove 1 (14); A lock pin shaft (18) is arranged in the lock hole one (17) and passes through the pin hole one (15).
6. The high-power electric heating device under the oil well pump according to claim 5 is characterized in that: A second groove (19) communicating with the first pin hole (15) is provided on the side wall of the first clamping member (12), and a clamping groove (20) is provided on the lock pin shaft (18); and further comprising: A shaft locking block (21) is slidably disposed in the second groove (19); the shaft locking block (21) has a U-shaped opening, and the U-shaped opening is clamped on the clamping groove (20).
7. The high-power electric heating device under the oil well pump according to claim 6 is characterized in that: The shaft locking block (21) has an anti-slip groove (22), and a sliding groove (23) is provided at the bottom of the second groove (19). After the shaft locking block (21) slides, the sliding groove (23) is aligned with or cancels the alignment with the anti-slip groove (22); and further comprising: A sliding pin (24) is slidably disposed in the sliding groove (23), and the sliding pin (24) is engaged with the anti-slip groove (22) or cancels the engagement after sliding; An elastic member 1 (25) is arranged in the slide groove (23), one end of the elastic member 1 (25) acts on the bottom of the slide groove (23), and the other end of the elastic member 1 (25) acts on the sliding pin (24).
8. The high-power electric heating device under the oil well pump according to claim 5 is characterized in that: The first clamping member (12) has a groove three (26), and the second clamping member (13) has a groove four (27), and the groove three (26) and the groove four (27) are combined to form the cable entry gap (28); the first clamping member (12) and the second clamping member (13) are both provided with a guide groove one (29); and further comprising: The cable fixing member (30) is slidably disposed in the guide groove 1 (29), and the cable fixing member (30) has a spherical head.
9. The high-power electric heating device under the oil well pump according to claim 5, characterized in that: The first clamping member (12) and the second clamping member (13) are both provided with a groove five (31); the suspension rod (10) is provided with a limiting groove (32), and further comprises: A sliding member (33) is slidably disposed on the side wall of the groove (31); A second slide member (34) is slidably disposed on the side wall of the groove five (31) and abuts against the first slide member (33), wherein the sliding directions of the second slide member (34) and the first slide member (33) are perpendicular to each other, and the second slide member (34) is inserted into the limiting groove (32) or cancels the insertion after sliding; A trigger member (35) is arranged on the suspension rod (10), and the trigger member (35) abuts against the sliding member 1 (33).
10. The high-power electric heating device under the oil well pump according to claim 9, characterized in that: Also includes: The second elastic member (36) is arranged in the fifth groove (31), one end of the second elastic member (36) acts on the second sliding member (34), and the other end of the second elastic member (36) acts on the side wall of the fifth groove (31).