CN114484131A - Device for heating crude oil pipeline by utilizing graphene heating oil - Google Patents
Device for heating crude oil pipeline by utilizing graphene heating oil Download PDFInfo
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- CN114484131A CN114484131A CN202210127287.9A CN202210127287A CN114484131A CN 114484131 A CN114484131 A CN 114484131A CN 202210127287 A CN202210127287 A CN 202210127287A CN 114484131 A CN114484131 A CN 114484131A
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- oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a device for heating a crude oil pipeline by utilizing graphene heating oil, and relates to the technical field of crude oil heating. According to the invention, through the matching of the oil conveying pipe, the fixed pipe, the protective box, the oil pump shell, the first motor, the first gear, the second gear and the stirring device, the output shaft of the first motor rotates to drive the first gear to rotate, the graphene heating oil is conveyed to the inside of the oil conveying pipe by utilizing the rotation of the second gear, the crude oil in the crude oil pipe is heated through the attachment of the oil conveying pipe and the crude oil pipe, and the crude oil flows into the protective box after passing through the oil conveying pipe, so that the crude oil in the crude oil pipe is uniformly heated.
Description
Technical Field
The invention relates to the technical field of heating crude oil, in particular to a device for heating a crude oil pipeline by utilizing graphene heating oil.
Background
The crude oil pipeline mainly refers to a pipeline for conveying crude oil products, and is different from a finished oil pipeline, the crude oil pipeline refers to an oil pipeline for conveying crude oil in a long distance, a liquid phase part in crude oil is in petroleum, chemical components of the crude oil pipeline are paraffin base, naphthenic base and intermediate base, an intermediate pump station for pressurization is required to be arranged along the pipeline for long-distance conveying, an intermediate heating station is required to be arranged along the pipeline for conveying easily-coagulated high-viscosity oil, or injection devices such as diluent oil or pour point depressant are arranged at the starting point, and due to the fact that the graphene is high in conductive efficiency, the temperature rising speed of the graphene home heating oil is high, and the pipeline can be heated quickly.
The following problems exist in the prior art:
1. when the pipeline is heated, the graphene heating oil needs to be heated quickly, and if the graphene heating oil is directly heated on the outer wall of the pipeline, the heating speed of the graphene is slow, and the heating efficiency is affected;
2. when heating the pipeline, the condition of wax precipitation appears in the inner wall of crude oil pipeline, and long-time heating influences the transport of crude oil easily, reduces the transport efficiency of device.
Disclosure of Invention
The invention provides a device for heating a crude oil pipeline by utilizing graphene heating oil, which aims to have the capability of quickly heating the graphene heating oil and solve the problem of slow heating efficiency of the conventional device; the other purpose is to solve the problem that the inner wall of the oil pipe is easy to wax so as to achieve the effect of improving the crude oil conveying efficiency of the device.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides an utilize graphite alkene oil that generates heat to heat device of former oil pipe way, includes the heating device main part, the heating device main part is including former oil pipe, former oil pipe's outer wall fixedly connected with shell, former oil pipe's inside packing has crude oil, one side of shell is provided with hot oil device, former oil pipe's inside is provided with cleaning device, hot oil device is including defeated oil pipe, defeated oil pipe's inner wall and crude oil pipe's outer wall fixed connection, the fixed pipe of the both ends outer wall fixedly connected with of defeated oil pipe, one side of fixed pipe and one side fixed connection of shell, the inside of fixed pipe is provided with first gear and second gear, cleaning device is including the support frame, the outer wall of support frame and the inner wall fixed connection of crude oil pipe, one side of support frame is provided with screw and dwang.
The technical scheme of the invention is further improved as follows: the utility model discloses an oil pump, including defeated oil pipe, outer wall and fixed pipe, the one end fixedly connected with oil pump case of defeated oil pipe, the outer wall of oil pump case and the inner wall bottom fixed connection of fixed pipe, the first motor of outer wall one side fixedly connected with of oil pump case, the output shaft of first motor and one side fixed connection of first gear, the outer wall of first gear and the outer wall swing joint of second gear, one side of second gear and the inner wall swing joint of oil pump case, one side fixedly connected with protecting box of fixed pipe.
The technical scheme of the invention is further improved as follows: one side fixedly connected with of protective housing advances oil pipe, the one end that advances oil pipe and the one end fixed connection of fixed pipe, the bottom of advancing oil pipe is provided with out oil pipe, the one end that goes out oil pipe and one side fixed connection of oil pump case, the inside of protective housing is provided with agitating unit, the top fixedly connected with motor case of protective housing.
The technical scheme of the invention is further improved as follows: the inner wall fixedly connected with second motor of motor case, the output shaft fixedly connected with transfer line of second motor, the one end and the agitating unit's of transfer line top fixed connection, the inner wall bottom fixedly connected with heating pipe of guard box, the heating pipe sets up in agitating unit's inside, the inside packing of guard box has graphite alkene heating oil.
The technical scheme of the invention is further improved as follows: agitating unit is including rotating the post, the one end of rotating the post and the one end fixed connection of transfer line, the bottom of rotating the post and the bottom swing joint of guard box, the outer wall fixedly connected with support column of rotating the post, the other end fixedly connected with swivel becket of support column, the inboard swing joint of swivel becket has first churn, top one side swing joint of first churn has the pull rod, the other end swing joint of pull rod has the second churn, the top of second churn and the inner wall swing joint of swivel becket.
Adopt above-mentioned technical scheme, adopt defeated oil pipe, fixed pipe, protective housing, oil pump shell, first motor, first gear, second gear and agitating unit cooperation jointly in this scheme, evenly heat crude oil.
The technical scheme of the invention is further improved as follows: one side of screw and one side swing joint of dwang, the one end of screw and the one end fixed connection of dwang, the outer wall of dwang and the inner wall swing joint of support frame, the outer wall fixed connection of dwang has elastic device.
The technical scheme of the invention is further improved as follows: the outer wall of the elastic device is fixedly connected with a rotating column, the outer wall of the rotating column is fixedly connected with a scraping strip, and the outer wall of the scraping strip is movably connected with the inner wall of the crude oil pipe.
By adopting the technical scheme, the graphene heating oil is rapidly heated by adopting the common cooperation of the motor box, the second motor, the transmission rod, the oil outlet pipe, the oil inlet pipe, the heating pipe, the rotating column, the supporting column, the rotating ring, the first stirring column, the second stirring column and the pull rod in the scheme.
The technical scheme of the invention is further improved as follows: the elastic device is including the movable block, the bottom of movable block and the outer wall fixed connection of dwang, the outer wall swing joint of movable block has the fixed block, the top fixedly connected with spout of movable block, the outer wall swing joint of spout has the slip post, the outer wall fixedly connected with elastic ring of slip post, the top of elastic ring and the inner wall fixed connection of fixed block, the inner wall fixedly connected with elastic post of elastic ring.
By adopting the technical scheme, the supporting frame, the propeller, the rotating rod, the elastic device, the rotating column, the scraping strip, the fixed block, the movable block, the sliding chute, the sliding column, the elastic ring, the elastic column and the crude oil in the scheme are matched together to clean the oil wax in the oil pipe.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the technical progress that:
1. the invention provides a device for heating a crude oil pipeline by using graphene heating oil, which adopts the matching among an oil conveying pipe, a fixed pipe, a protective box, an oil pump shell, a first motor, a first gear, a second gear and a stirring device, an output shaft of the first motor rotates to drive the first gear to rotate, the rotation of the second gear is utilized to convey the graphene heating oil to the inside of the oil conveying pipe, crude oil in the crude oil pipe is heated by the attachment of the oil conveying pipe and the crude oil pipe and flows into the inside of the protective box after passing through the oil conveying pipe, so that the crude oil in the crude oil pipe is uniformly heated, the crude oil heating efficiency is improved, the crude oil is prevented from being larger due to slower heating efficiency, the blockage of the crude oil pipe is prevented, and the conveying efficiency of the device is influenced.
2. The invention provides a device for heating a crude oil pipeline by utilizing graphene heating oil, which adopts a motor box, a second motor, a transmission rod, an oil outlet pipe, an oil inlet pipe, a heating pipe, a rotating column, a support column, a rotating ring, a first stirring column, a second stirring column and a pull rod which are matched, an output shaft of the second motor rotates, the stirring device is driven to rotate by the transmission rod, the graphene heating oil in the first stirring column is heated by the heating pipe, the rotating ring rotates by the aid of the rotating rod of the rotating column, the graphene heating oil in the first stirring column is heated by the first stirring column, the first stirring column rotates due to rotating resistance, the second stirring column rotates by the pull rod, the graphene heating oil in the second stirring column is uniformly heated, and heating efficiency of the graphene heating oil is improved.
3. The invention provides a device for heating a crude oil pipeline by utilizing graphene heating oil, which adopts a support frame, a propeller, a rotating rod, an elastic device, a rotating column, a scraping strip, a fixed block, a movable block, a sliding groove, a sliding column, an elastic ring, the elastic column and crude oil to be matched, when the crude oil flows, the propeller is driven to rotate at one side of the support frame to drive the rotating rod to rotate, the movable block moves in the fixed block by utilizing the elasticity of the elastic ring to extrude the rotating column, and the extruding scraping strip is utilized to clean wax on the inner wall of the crude oil pipeline, so that more wax is prevented from influencing the transportation of the crude oil, and the efficiency of the device is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of a structural hot oil unit of the present invention;
FIG. 3 is a schematic cross-sectional view of a structural protective enclosure of the present invention;
FIG. 4 is a schematic cross-sectional view of a structural stirring device of the present invention;
FIG. 5 is a schematic cross-sectional view of a structural cleaning apparatus of the present invention;
fig. 6 is a cross-sectional view of the structural elastic device of the present invention.
In the figure: 1. a heating device main body; 2. a hot oil unit; 3. a cleaning device; 4. a crude oil pipe; 5. a housing; 21. an oil delivery pipe; 22. a fixed tube; 23. a protective box; 24. an oil pump housing; 25. a first motor; 26. a first gear; 27. a second gear; 28. a stirring device; 231. a motor case; 232. a second motor; 233. a transmission rod; 234. an oil outlet pipe; 235. an oil inlet pipe; 236. heating a tube; 281. rotating the column; 282. a support pillar; 283. a rotating ring; 284. a first stirring column; 285. a second stirring column; 286. a pull rod; 31. a support frame; 32. a propeller; 33. rotating the rod; 34. an elastic device; 35. a spin column; 36. scraping the strips; 341. a fixed block; 342. a movable block; 343. a chute; 344. a sliding post; 345. an elastic ring; 346. an elastic column; 41. crude oil.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
example 1
As shown in fig. 1-6, the present invention provides a device for heating a crude oil pipeline by using graphene heating oil, the heating device body 1 includes a crude oil pipe 4, an outer shell 5 is fixedly connected to an outer wall of the crude oil pipe 4, crude oil 41 is filled in the crude oil pipe 4, a hot oil device 2 is disposed on one side of the outer shell 5, a cleaning device 3 is disposed in the crude oil pipe 4, the hot oil device 2 includes an oil pipe 21, an inner wall of the oil pipe 21 is fixedly connected to an outer wall of the crude oil pipe 4, outer walls of two ends of the oil pipe 21 are fixedly connected to a fixed pipe 22, one side of the fixed pipe 22 is fixedly connected to one side of the outer shell 5, a first gear 26 and a second gear 27 are disposed in the fixed pipe 22, the cleaning device 3 includes a support frame 31, an outer wall of the support frame 31 is fixedly connected to an inner wall of the crude oil pipe 4, a propeller 32 and a rotating rod 33 are disposed on one side of the support frame 31, one end of the oil delivery pipe 21 is fixedly connected with an oil pump shell 24, the outer wall of the oil pump shell 24 is fixedly connected with the bottom of the inner wall of the fixed pipe 22, one side of the outer wall of the oil pump shell 24 is fixedly connected with a first motor 25, the output shaft of the first motor 25 is fixedly connected with one side of a first gear 26, the outer wall of the first gear 26 is movably connected with the outer wall of a second gear 27, one side of the second gear 27 is movably connected with the inner wall of the oil pump shell 24, one side of the fixed pipe 22 is fixedly connected with a protective box 23, the first gear 26 is driven to rotate by the rotation of the output shaft of the first motor 25, the graphene heating oil is conveyed to the inside of the oil delivery pipe 21 by the rotation of the second gear 27, the crude oil 41 inside the crude oil pipe 4 is heated by the attachment of the oil delivery pipe 21 and the crude oil pipe 4, and flows into the protective box 23 after passing through the oil delivery pipe 21, so that the crude oil 41 inside of the crude oil pipe 4 is uniformly heated, the heating efficiency of the crude oil 41 is improved.
Example 2
As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, one side of the protection box 23 is fixedly connected with an oil inlet pipe 235, one end of the oil inlet pipe 235 is fixedly connected with one end of the fixed pipe 22, the bottom of the oil inlet pipe 235 is provided with an oil outlet pipe 234, one end of the oil outlet pipe 234 is fixedly connected with one side of the oil pump shell 24, the interior of the protection box 23 is provided with a stirring device 28, the top of the protection box 23 is fixedly connected with a motor box 231, the inner wall of the motor box 231 is fixedly connected with a second motor 232, an output shaft of the second motor 232 is fixedly connected with a transmission rod 233, one end of the transmission rod 233 is fixedly connected with the top of the stirring device 28, the bottom of the inner wall of the protection box 23 is fixedly connected with a heating pipe 236, the heating pipe 236 is arranged inside the stirring device 28, the interior of the protection box 23 is filled with graphene heating oil, the stirring device 28 comprises a rotating column 281, one end of the rotating column 281 is fixedly connected with one end of the transmission rod 233, the bottom of the rotating column 281 is movably connected with the bottom of the protection box 23, the outer wall fixedly connected with support column 282 of rotation post 281, the other end fixedly connected with swivel 283 of support column 282, the inboard swing joint of swivel 283 has first stirring post 284, the top one side swing joint of first stirring post 284 has pull rod 286, the other end swing joint of pull rod 286 has second stirring post 285, the top of second stirring post 285 and the inner wall swing joint of swivel 283. The output shaft of the second motor 232 rotates, the stirring device 28 is driven to rotate through the transmission rod 233, and the graphene heating oil inside is heated through the heating pipe 236.
Example 3
As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, one side of screw 32 and one side swing joint of dwang 33, the one end of screw 32 and the one end fixed connection of dwang 33, the outer wall of dwang 33 and the inner wall swing joint of support frame 31, the outer wall fixed connection of dwang 33 has elastic device 34, the outer wall fixed connection of elastic device 34 has column spinner 35, the outer wall fixed connection of column spinner 35 scrapes strip 36, the outer wall of scraping strip 36 and the inner wall swing joint of crude oil pipe 4, dwang through column spinner 281, utilize support column 282 to make swivel ring 283 rotate, heat inside graphite alkene heating oil through first column stirrer 284, because pivoted resistance, make first column stirrer 284 rotate, pull second column stirrer 285 through pull rod 286 and rotate, make and carry out the even heating to inside graphite alkene heating oil.
Example 4
As shown in fig. 1 to 6, on the basis of embodiment 1, the present invention provides a technical solution: preferably, the elastic device 34 includes a movable block 342, the bottom of the movable block 342 is fixedly connected to the outer wall of the rotating rod 33, the outer wall of the movable block 342 is movably connected to a fixed block 341, the top of the movable block 342 is fixedly connected to a sliding groove 343, the outer wall of the sliding groove 343 is movably connected to a sliding column 344, the outer wall of the sliding column 344 is fixedly connected to an elastic ring 345, the top of the elastic ring 345 is fixedly connected to the inner wall of the fixed block 341, the inner wall of the elastic ring 345 is fixedly connected to an elastic column 346, when crude oil flows, the propeller 32 is driven to rotate on one side of the supporting frame 31, the rotating rod 33 is driven to rotate, the elastic force of the elastic ring 345 is utilized, the movable block 342 moves inside the fixed block 341, the rotating column 35 is extruded, and the extrusion scraping strip 36 is utilized to clean the oil wax on the inner wall of the crude oil pipe 4.
The working principle of the device for heating the crude oil pipeline by using the graphene heating oil is described in detail below.
As shown in fig. 1-6, firstly, the output shaft of the first motor 25 rotates to drive the first gear 26 to rotate, the rotation of the second gear 27 is utilized to convey the graphene heating oil to the inside of the oil conveying pipe 21, the crude oil 41 in the crude oil pipe 4 is heated by the adhesion of the oil conveying pipe 21 and the crude oil pipe 4, and flows into the interior of the protective box 23 after passing through the oil conveying pipe 21, so that the crude oil 41 in the crude oil pipe 4 is uniformly heated, the heating efficiency of the crude oil 41 is improved, the output shaft of the second motor 232 rotates to drive the stirring device 28 to rotate through the transmission rod 233, the graphene heating oil in the interior is heated through the heating pipe 236, the rotation ring 283 rotates through the rotation rod of the rotation column 281, the rotation ring 283 rotates through the support column 282, and the graphene heating oil in the interior is heated through the first stirring column 284, because pivoted resistance, make first stirring post 284 rotate, pull second stirring post 285 through pull rod 286 and rotate, make and carry out the even heating to inside graphite alkene heating oil, drive screw 32 when crude oil flows and rotate in one side of support frame 31, drive dwang 33 and rotate, utilize the elasticity of elasticity circle 345, make movable block 342 remove in the inside of fixed block 341, extrude rotation post 35, utilize the extrusion to scrape the wax of strip 36 to the inner wall of crude oil pipe 4 and clean.
The present invention has been described in general terms in the foregoing, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the present invention. Therefore, modifications or improvements are within the scope of the invention without departing from the spirit of the inventive concept.
Claims (8)
1. The utility model provides an utilize graphite alkene oil that generates heat to heat device of former oil pipe way, includes heating device main part (1), heating device main part (1) is including former oil pipe (4), the outer wall fixedly connected with shell (5) of former oil pipe (4), the inside packing of former oil pipe (4) has crude oil (41), its characterized in that: a hot oil device (2) is arranged on one side of the shell (5), and a cleaning device (3) is arranged in the crude oil pipe (4);
the hot oil device (2) comprises an oil delivery pipe (21), the inner wall of the oil delivery pipe (21) is fixedly connected with the outer wall of a raw oil pipe (4), the outer walls of the two ends of the oil delivery pipe (21) are fixedly connected with fixed pipes (22), one side of each fixed pipe (22) is fixedly connected with one side of the shell (5), and a first gear (26) and a second gear (27) are arranged inside each fixed pipe (22);
cleaning device (3) is including support frame (31), the outer wall of support frame (31) and the inner wall fixed connection of former oil pipe (4), one side of support frame (31) is provided with screw (32) and dwang (33).
2. The device for heating a crude oil pipeline by using graphene heating oil according to claim 1, wherein: the utility model discloses a hydraulic pump, including defeated oil pipe (21), one end fixedly connected with pump case (24), the outer wall of pump case (24) and the inner wall bottom fixed connection of fixed pipe (22), the first motor (25) of outer wall one side fixedly connected with of pump case (24), the output shaft of first motor (25) and one side fixed connection of first gear (26), the outer wall of first gear (26) and the outer wall swing joint of second gear (27), one side of second gear (27) and the inner wall swing joint of pump case (24), one side fixedly connected with protecting box (23) of fixed pipe (22).
3. The device for heating a crude oil pipeline by using graphene heating oil according to claim 2, wherein: one side fixedly connected with of protective housing (23) advances oil pipe (235), advance the one end of oil pipe (235) and the one end fixed connection of fixed pipe (22), the bottom of advancing oil pipe (235) is provided with out oil pipe (234), the one end of going out oil pipe (234) and one side fixed connection of oil pump case (24), the inside of protective housing (23) is provided with agitating unit (28), the top fixedly connected with motor case (231) of protective housing (23).
4. The device for heating a crude oil pipeline by using graphene heating oil according to claim 3, wherein: the inner wall fixedly connected with second motor (232) of motor case (231), the output shaft fixedly connected with transfer line (233) of second motor (232), the top fixed connection of the one end and agitating unit (28) of transfer line (233), the inner wall bottom fixedly connected with heating pipe (236) of guard box (23), heating pipe (236) set up in the inside of agitating unit (28), the inside packing of guard box (23) has graphite alkene heating oil.
5. The device for heating a crude oil pipeline by using graphene heating oil according to claim 4, wherein: agitating unit (28) is including rotating post (281), the one end of rotating post (281) and the one end fixed connection of transfer line (233), the bottom of rotating post (281) and the bottom swing joint of guard box (23), the outer wall fixedly connected with support column (282) of rotating post (281), the other end fixedly connected with swivel becket (283) of support column (282), the inboard swing joint of swivel becket (283) has first stirring post (284), top one side swing joint of first stirring post (284) has pull rod (286), the other end swing joint of pull rod (286) has second stirring post (285), the top of second stirring post (285) and the inner wall swing joint of swivel becket (283).
6. The device for heating a crude oil pipeline by using graphene heating oil according to claim 1, wherein: one side of screw (32) and one side swing joint of dwang (33), the one end of screw (32) and the one end fixed connection of dwang (33), the outer wall of dwang (33) and the inner wall swing joint of support frame (31), the outer wall fixed connection of dwang (33) has resilient means (34).
7. The device for heating a crude oil pipeline by using graphene heating oil according to claim 6, wherein: the outer wall fixedly connected with column spinner (35) of resilient means (34), the outer wall fixedly connected with of column spinner (35) scrapes strip (36), the outer wall swing joint of scraping strip (36) and the inner wall of former oil pipe (4).
8. The device for heating a crude oil pipeline by using graphene heating oil according to claim 7, wherein: elastic device (34) is including movable block (342), the bottom of movable block (342) and the outer wall fixed connection of dwang (33), the outer wall swing joint of movable block (342) has fixed block (341), the top fixedly connected with spout (343) of movable block (342), the outer wall swing joint of spout (343) has slip post (344), the outer wall fixedly connected with elastic ring (345) of slip post (344), the top of elastic ring (345) and the inner wall fixed connection of fixed block (341), the inner wall fixedly connected with elastic post (346) of elastic ring (345).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210127287.9A CN114484131A (en) | 2022-02-11 | 2022-02-11 | Device for heating crude oil pipeline by utilizing graphene heating oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210127287.9A CN114484131A (en) | 2022-02-11 | 2022-02-11 | Device for heating crude oil pipeline by utilizing graphene heating oil |
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| CN215568878U (en) * | 2021-06-07 | 2022-01-18 | 江苏宝金利消防科技有限公司 | High-temperature hot water conveying pipe |
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