CN210036341U - Drawable double-helix heating coil structure - Google Patents
Drawable double-helix heating coil structure Download PDFInfo
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- CN210036341U CN210036341U CN201920522368.2U CN201920522368U CN210036341U CN 210036341 U CN210036341 U CN 210036341U CN 201920522368 U CN201920522368 U CN 201920522368U CN 210036341 U CN210036341 U CN 210036341U
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Abstract
The utility model discloses a can take out formula double helix heating coil structure, including outer heating coil, inlayer heating coil, crude oil import mouthpiece, crude oil export mouthpiece and can take out formula track, outer heating coil inboard is equipped with inlayer heating coil, and wherein an outer heating coil end connection inlayer heating coil tip, another end connection crude oil import mouthpiece of outer heating coil, wherein another end connection crude oil export mouthpiece of inlayer heating coil, outer heating coil outside axial position is connected with can take out formula track. The utility model discloses can take out formula double helix heating coil adopts novel overall structure, is the novel coil pipe structure of a detachable, has changed traditional coil pipe maintenance and change mode, very big solution the field operation difficulty, and the dismouting time is no longer than 6h, and the dismouting process need not the operation of starting a fire.
Description
Technical Field
The utility model belongs to the technical field of the heat exchange tube of heating crude oil among the oil field ground gathering system engineering, especially, relate to a can take out formula double helix heating coil pipe structure, mainly used heats the horizontal water jacket heating furnace of crude oil.
Background
In the process of oil and gas storage and transportation, the water jacket heating furnace is a heating device which transfers heat generated by fuel combustion to a heated medium through an intermediate medium water to raise the temperature of the heated medium, and is mainly used in an oil and gas gathering and transportation system to heat crude oil, natural gas and well products to the temperature required by the process, then carry out the transportation, sedimentation, separation, dehydration and primary processing of production media, provide heating of stations and other heat loads, and the fuel mainly takes heavy oil and associated gas produced by oil and gas fields as main materials.
The heating coil is a core heat exchange element of the water jacket heating furnace, is mainly immersed in a water bath, and heats intermediate heat transfer medium water in the furnace body by fuel combustion through radiation heat transfer of a fire tube and convection heat transfer of a smoke tube, and heat is transferred to the crude oil heating coil due to the rise of water temperature, so that the temperature of the process medium is raised, and the heating purpose is achieved.
Generally, in the running process of a water jacket heating furnace, due to the changes of temperature and flow velocity and the characteristics of crude oil containing water, scales are easy to form in a heating coil pipe, most scales are barium and strontium scales, and the heating efficiency and the heat transfer characteristics of the crude oil are influenced to a great extent. The existing coil structure is mostly a U-shaped coil, scaling and blocking are easy to occur at a 180-degree corner, local resistance at the corner accounts for more than 60% of total resistance of the coil, maintenance difficulty of the heating furnace is increased, when a fire tube and the heating coil are replaced, the water jacket heating furnace end socket can be maintained only by cutting, and the maintenance and installation process is complex, high in cost and long in period.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a drawable double helix heating coil pipe structure and heating method, overcome among the prior art 1: the existing coil pipe is mostly in a U-shaped coil pipe structure form, scaling and blockage are easy to occur at a 180-degree turning position, and the local resistance at the turning position accounts for more than 60% of the total resistance of the coil pipe; 2: the maintenance difficulty of the heating furnace is increased, and when the fire tube and the heating coil are replaced, the water jacket heating furnace end socket is required to be cut for maintenance; 3: complex maintenance and installation process, high cost, long period and the like.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a can draw formula double helix heating coil structure, includes outer heating coil, inlayer heating coil, crude oil import nozzle, crude oil export nozzle and can draw formula track, outer heating coil inboard is equipped with inlayer heating coil, and wherein an outer heating coil end connection inlayer heating coil tip, another end connection crude oil import nozzle of outer heating coil, another end connection crude oil export nozzle of inlayer heating coil wherein, outer heating coil outside axial position is connected with can draw formula track.
Preferably, outer heating coil and inlayer heating coil are helical coil, and wherein the helical coil diameter of outer heating coil is greater than the helical coil diameter of inlayer heating coil, helical coil is coiled by a heat exchange tube and is formed, and wherein the heat exchange tube intercommunication of outer heating coil and inlayer heating coil one end, the material of wherein heat exchange tube is 20# seamless steel pipe.
Preferably, outer heating coil and inlayer heating coil intercommunication department are connected through heating communicating pipe, wherein heat communicating pipe and connect by straight tube and return bend two parts and constitute, outer heating coil is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of outer heating coil radius, and wherein heat communicating pipe and outer heating coil and inlayer heating coil and pass through welded connection.
Preferably, the diameter of the spiral coil of the inner heating coil is 0.5-0.75 times of that of the spiral coil of the outer heating coil, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Preferably, the outer heating coil is connected with a crude oil inlet nozzle in a welding mode, the inner heating coil is connected with a crude oil outlet nozzle in a welding mode, and the crude oil inlet nozzle and the crude oil outlet nozzle are connected with an external pipeline through WN-RF flanges.
Preferably, still include spacing support pull rod, outer heating coil and inlayer heating coil outside axial position all are equipped with four spacing support pull rods, and wherein spacing support pull rod on two adjacent outer heating coils is 90 with the contained angle of outer heating coil center pin, and wherein spacing support pull rod on two adjacent inlayer heating coils is 90 with the contained angle of inlayer heating coil center pin, and wherein spacing support pull rod is connected through spot welding mode with outer heating coil and inlayer heating coil.
Preferably, still include preceding backplate and backplate, an terminal surface of outer heating coil and inlayer heating coil is equipped with the preceding backplate, and wherein another terminal surface of outer heating coil and inlayer heating coil is equipped with the backplate, and wherein preceding backplate and backplate pass through bolt and nut with spacing support pull rod respectively and are connected.
Preferably, the drawable track is a primary-secondary channel steel, wherein the primary-secondary channel steel is formed by mutually embedding two large and small channel steels, and the drawing function is realized through the displacement between the two channel steels.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model adopts a novel integral structure, is a detachable novel coil pipe structure, changes the traditional coil pipe maintenance and replacement mode, greatly solves the problem of difficult field operation, has the disassembly and assembly time not exceeding 6h, and does not need fire operation in the disassembly and assembly process;
(2) the utility model discloses the spiral coil diameter of the inlayer heating coil of formula of can drawing double helix heating coil is 0.5~0.75 times of the spiral coil diameter of outer heating coil, the diameter d of heat exchange tube is 50~100mm, the pitch of spiral coil is 0.5~1d, the straight tube length of heating communicating pipe is 200~250mm, the return bend radian of heating communicating pipe is 90, the return bend radius of heating communicating pipe is 0.5 times of outer heating coil radius, this size design has ensured best heat exchange efficiency, the design furthest of heating communicating pipe has reduced the resistance simultaneously, superior structural characteristic and efficient heat exchange efficiency have, the resistance is littleer, the coil resistance reduces more than 50%, the total resistance under the design operating mode is no more than 0.5 MPa;
(3) the utility model discloses the difficult scale deposit of formula double helix heating coil inner wall can be taken out has prolonged water jacket heating furnace's life, and under same heating load, this double helix heating coil structure saves heating furnace space 8%, and the steel consumption reduces 10% to the operation maintenance cost has been reduced.
Drawings
Fig. 1 is a schematic structural view of a drawable double-spiral heating coil structure of the present invention;
fig. 2 is a schematic side view of a drawable double-spiral heating coil structure of the present invention.
Description of reference numerals:
1-outer heating coil, 2-inner heating coil, 3-limiting support pull rod, 4-drawable track, 5-front guard plate, 6-rear guard plate, 7-crude oil outlet nozzle, 8-crude oil inlet nozzle and 9-heating communicating pipe.
Detailed Description
The following description of the embodiments of the present invention is provided in connection with the following embodiments:
it should be noted that the structures, ratios, sizes, etc. illustrated in the present specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships or adjustments of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Example 1
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
Example 2
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
Example 3
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, and wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2.
Example 4
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, and wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2.
Preferably, the diameter of the spiral coil of the inner heating coil 2 is 0.5-0.75 times of that of the spiral coil of the outer heating coil 1, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Example 5
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, and wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2.
Preferably, the diameter of the spiral coil of the inner heating coil 2 is 0.5-0.75 times of that of the spiral coil of the outer heating coil 1, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Preferably, the outer heating coil 1 is welded with the crude oil inlet nozzle 8, wherein the inner heating coil 2 is welded with the crude oil outlet nozzle 7, and wherein the crude oil inlet nozzle 8 and the crude oil outlet nozzle 7 are connected with the external pipeline through WN-RF flanges.
Example 6
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, and wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2.
Preferably, the diameter of the spiral coil of the inner heating coil 2 is 0.5-0.75 times of that of the spiral coil of the outer heating coil 1, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Preferably, the outer heating coil 1 is welded with the crude oil inlet nozzle 8, wherein the inner heating coil 2 is welded with the crude oil outlet nozzle 7, and wherein the crude oil inlet nozzle 8 and the crude oil outlet nozzle 7 are connected with the external pipeline through WN-RF flanges.
As shown in fig. 1-2, preferably, still include spacing support pull rod 3, outer heating coil 1 and inlayer heating coil 2 outside axial position all are equipped with four spacing support pull rod 3, and wherein the contained angle of spacing support pull rod 3 on two adjacent outer heating coil 1 and outer heating coil 1 center pin is 90, and wherein the contained angle of spacing support pull rod 3 on two adjacent inlayer heating coil 2 and inlayer heating coil 2 center pin is 90, and wherein spacing support pull rod 3 is connected through spot welding mode with outer heating coil 1 and inlayer heating coil 2.
Example 7
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, and wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2.
Preferably, the diameter of the spiral coil of the inner heating coil 2 is 0.5-0.75 times of that of the spiral coil of the outer heating coil 1, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Preferably, the outer heating coil 1 is welded with the crude oil inlet nozzle 8, wherein the inner heating coil 2 is welded with the crude oil outlet nozzle 7, and wherein the crude oil inlet nozzle 8 and the crude oil outlet nozzle 7 are connected with the external pipeline through WN-RF flanges.
As shown in fig. 1-2, preferably, still include spacing support pull rod 3, outer heating coil 1 and inlayer heating coil 2 outside axial position all are equipped with four spacing support pull rod 3, and wherein the contained angle of spacing support pull rod 3 on two adjacent outer heating coil 1 and outer heating coil 1 center pin is 90, and wherein the contained angle of spacing support pull rod 3 on two adjacent inlayer heating coil 2 and inlayer heating coil 2 center pin is 90, and wherein spacing support pull rod 3 is connected through spot welding mode with outer heating coil 1 and inlayer heating coil 2.
As shown in fig. 1-2, preferably, the heating device further comprises a front guard plate 5 and a rear guard plate 6, wherein the front guard plate 5 is arranged on one end face of the outer heating coil 1 and one end face of the inner heating coil 2, the rear guard plate 6 is arranged on the other end face of the outer heating coil 1 and the other end face of the inner heating coil 2, and the front guard plate 5 and the rear guard plate 6 are respectively connected with the limiting support pull rod 3 through bolts and nuts.
Example 8
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, and wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2.
Preferably, the diameter of the spiral coil of the inner heating coil 2 is 0.5-0.75 times of that of the spiral coil of the outer heating coil 1, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Preferably, the outer heating coil 1 is welded with the crude oil inlet nozzle 8, wherein the inner heating coil 2 is welded with the crude oil outlet nozzle 7, and wherein the crude oil inlet nozzle 8 and the crude oil outlet nozzle 7 are connected with the external pipeline through WN-RF flanges.
As shown in fig. 1-2, preferably, still include spacing support pull rod 3, outer heating coil 1 and inlayer heating coil 2 outside axial position all are equipped with four spacing support pull rod 3, and wherein the contained angle of spacing support pull rod 3 on two adjacent outer heating coil 1 and outer heating coil 1 center pin is 90, and wherein the contained angle of spacing support pull rod 3 on two adjacent inlayer heating coil 2 and inlayer heating coil 2 center pin is 90, and wherein spacing support pull rod 3 is connected through spot welding mode with outer heating coil 1 and inlayer heating coil 2.
As shown in fig. 1-2, preferably, the heating device further comprises a front guard plate 5 and a rear guard plate 6, wherein the front guard plate 5 is arranged on one end face of the outer heating coil 1 and one end face of the inner heating coil 2, the rear guard plate 6 is arranged on the other end face of the outer heating coil 1 and the other end face of the inner heating coil 2, and the front guard plate 5 and the rear guard plate 6 are respectively connected with the limiting support pull rod 3 through bolts and nuts.
As shown in fig. 1-2, preferably, the drawable track 4 is a primary-secondary channel steel, wherein the primary-secondary channel steel is formed by embedding two large and small channel steels together, and the drawing function is realized through the displacement between the two channel steels.
Example 9
As shown in fig. 1-2, the utility model discloses a can draw formula double helix heating coil structure, including outer heating coil 1, inlayer heating coil 2, crude oil import mouthpiece 8, crude oil export mouthpiece 7 and can draw formula track 4, 1 inboard of outer heating coil is equipped with inlayer heating coil 2, wherein 1 tip of outer heating coil connects 2 tip of inlayer heating coil, 1 another tip connection crude oil import mouthpiece 8 of outer heating coil, wherein another tip connection crude oil export mouthpiece 7 of inlayer heating coil 2, 1 outside axial position of outer heating coil is connected with can draw formula track 4.
As shown in fig. 1-2, it is preferable that outer heating coil 1 and inlayer heating coil 2 are helical coil, wherein the helical coil diameter of outer heating coil 1 is greater than the helical coil diameter of inlayer heating coil 2, helical coil is coiled by a heat exchange tube and is formed, wherein the heat exchange tube intercommunication of outer heating coil 1 and 2 one ends of inlayer heating coil, and wherein the material of heat exchange tube is No. 20 seamless steel pipe.
As shown in fig. 1-2, it is preferred, outer heating coil 1 and 2 intercommunications of inlayer heating coil are connected through heating communicating pipe 9, wherein heating communicating pipe 9 is connected by straight tube and return bend two parts and is constituteed, outer heating coil 1 is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein inlayer heating coil 2 is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of 1 radial of outer heating coil, and wherein heating communicating pipe 9 passes through welded connection with outer heating coil 1 and inlayer heating coil 2, straight tube length is 220 mm.
Preferably, the diameter of the spiral coil of the inner heating coil 2 is 0.5-0.75 times of that of the spiral coil of the outer heating coil 1, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
Preferably, the outer heating coil 1 is welded with the crude oil inlet nozzle 8, wherein the inner heating coil 2 is welded with the crude oil outlet nozzle 7, and wherein the crude oil inlet nozzle 8 and the crude oil outlet nozzle 7 are connected with the external pipeline through WN-RF flanges.
As shown in fig. 1-2, preferably, still include spacing support pull rod 3, outer heating coil 1 and inlayer heating coil 2 outside axial position all are equipped with four spacing support pull rod 3, and wherein the contained angle of spacing support pull rod 3 on two adjacent outer heating coil 1 and outer heating coil 1 center pin is 90, and wherein the contained angle of spacing support pull rod 3 on two adjacent inlayer heating coil 2 and inlayer heating coil 2 center pin is 90, and wherein spacing support pull rod 3 is connected through spot welding mode with outer heating coil 1 and inlayer heating coil 2.
As shown in fig. 1-2, preferably, the heating device further comprises a front guard plate 5 and a rear guard plate 6, wherein the front guard plate 5 is arranged on one end face of the outer heating coil 1 and one end face of the inner heating coil 2, the rear guard plate 6 is arranged on the other end face of the outer heating coil 1 and the other end face of the inner heating coil 2, and the front guard plate 5 and the rear guard plate 6 are respectively connected with the limiting support pull rod 3 through bolts and nuts.
As shown in fig. 1-2, preferably, the drawable track 4 is a primary-secondary channel steel, wherein the primary-secondary channel steel is formed by embedding two large and small channel steels together, and the drawing function is realized through the displacement between the two channel steels.
Preferably, a heating method of a drawable double spiral heating coil structure as described in any one of the above, the heating method is: but submergence formula double helix crude oil heating coil structure in the water bath of water jacket heating furnace, cold crude oil passes through crude oil import mouthpiece 8 and gets into in outer heating coil 1, continuous rotatory flow in outer heating coil 1, rethread heating communicating pipe 9 flows gradually into inlayer heating coil 2, continuous rotatory flow in inlayer heating coil 2, finally flow through crude oil export mouthpiece 7, through the change of crude oil fluid speed, the ability of reinforcing heat exchange, absorb water bath medium heat, thereby improve cold crude oil temperature and reach the purpose of heating.
The utility model discloses can take out double helix crude oil heating coil pipe structure's theory of operation as follows:
the utility model discloses a heating coil is spiral form, bilayer structure, contain inside and outside two-layer heating coil, the diameter of inlayer heating coil 2 is less than outer heating coil 1 diameter, bilayer structure is coiled by a heat exchange tube respectively, outer heating coil 1 and inlayer heating coil 2 communicate, the welding forms, the number of turns of spiral coil can be according to calculating heat load heat transfer area adjustment, cold crude oil gets into outer heating coil 1 through crude oil import mouthpiece 8, continuous rotatory flow in outer heating coil 1, rethread heating communicating pipe 9 flows gradually into inlayer heating coil 2, continuous rotatory flow in inlayer heating coil 2, finally flow out through crude oil export mouthpiece 7, through the change of crude oil fluid speed, the ability of reinforcing heat exchange, absorb water bath medium heat, thereby improve cold crude oil temperature and reach the purpose of heating, the water bath is heating medium, it is located in the cavity of the water jacket heating furnace, the burner conducts heat by radiation, and the heat is transferred to the water bath through the fire tube and the smoke tube.
A fixing measure limiting support pull rod 3, a front guard plate 5 and a rear guard plate 6 are arranged on the outer side of the double-layer spiral coil, and the purpose is to fix the heating coil so that the heating coil can freely expand in an organized manner; simultaneously also can fix heating coil on water jacket heating furnace barrel, prevent to make the coil pipe damage because of fluid flow rate change or external force factor, preceding backplate 5 and backplate 6 effect are spacing support pull rod 3 firstly, fixed heating coil, and the effect is second to restrict heating coil axial free expansion volume too big, limiting displacement, spacing support pull rod 3 passes through bolt and nut with preceding backplate 5 and backplate 6 and is connected, also makes things convenient for the dismouting to overhaul simultaneously.
In order to realize that the heating coil overhauls and dismantles the function, but adopt the pull mode, make heating coil wholly can follow the water jacket heating furnace cavity and take out, but install the formula track of taking out in the heating coil lower part, be similar to two piece channel-section steels of size and inlay each other and be in the same place, realize the pull function through the slip displacement between the channel-section steel, form stable structural style.
The utility model discloses the spiral coil pipe should avoid the radian inhomogeneous and atress phenomenon of concentrating rolling up the system in-process, avoids elbow and dead angle.
The utility model discloses can take out formula double helix heating coil adopts novel overall structure, is the novel coil pipe structure of a detachable, has changed traditional coil pipe maintenance and change mode, very big solution the field operation difficulty, and the dismouting time is no longer than 6h, and the dismouting process need not the operation of starting a fire.
The utility model discloses can take out 0.5~0.75 times of the spiral coil diameter of double helix heating coil's inlayer heating coil of formula, the diameter d of heat exchange tube is 50~100mm, the pitch of spiral coil is 0.5~1d, the straight tube length of heating communicating tube is 200~250mm, the return bend radian of heating communicating tube is 90, the return bend radius of heating communicating tube is outer heating coil radial 0.5 times, this size design has ensured best heat exchange efficiency, the design furthest of heating communicating tube has reduced the resistance simultaneously, superior structural characteristic and efficient heat exchange efficiency have, the resistance is littleer, the coil resistance reduces more than 50%, the total resistance under the design operating mode is no longer than 0.5 MPa.
The utility model discloses the difficult scale deposit of formula double helix heating coil inner wall can be taken out has prolonged water jacket heating furnace's life, and under same heating load, this double helix heating coil structure saves heating furnace space 8%, and the steel consumption reduces 10% to the operation maintenance cost has been reduced.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (8)
1. The utility model provides a can draw formula double helix heating coil structure which characterized in that: including outer heating coil, inlayer heating coil, crude oil import nozzle, crude oil export nozzle and drawable track, outer heating coil inboard is equipped with inlayer heating coil, wherein an outer heating coil end connection inlayer heating coil tip, another end connection crude oil import nozzle of outer heating coil, wherein another end connection crude oil export nozzle of inlayer heating coil, outer heating coil outside axial position is connected with the drawable track.
2. The withdrawable double-helix heating coil structure according to claim 1, characterized in that: outer heating coil and inlayer heating coil are helical coil, and wherein the helical coil diameter of outer heating coil is greater than the helical coil diameter of inlayer heating coil, helical coil is coiled by a heat exchange tube and is formed, and wherein the heat exchange tube intercommunication of outer heating coil and inlayer heating coil one end, the material of wherein heat exchange tube is 20# seamless steel pipe.
3. The withdrawable double-helix heating coil structure according to claim 2, characterized in that: outer heating coil and inlayer heating coil intercommunication department are connected through heating communicating pipe, and wherein heating communicating pipe is connected by straight tube and return bend two parts and is formed, outer heating coil is connected to return bend one end, and wherein the straight tube one end is connected to the return bend other end, and wherein the inlayer heating coil is connected to the straight tube other end, straight tube length is 200~250mm, and wherein the return bend radian is 90, the radius of return bend is 0.5 times of outer heating coil radius, wherein heats communicating pipe and passes through welded connection with outer heating coil and inlayer heating coil.
4. The withdrawable double-helix heating coil structure according to claim 2, characterized in that: the diameter of the spiral coil of the inner heating coil is 0.5-0.75 times of that of the spiral coil of the outer heating coil, the diameter d of the heat exchange tube is 50-100 mm, and the pitch of the spiral coil is 0.5-1 d.
5. The withdrawable double-helix heating coil structure according to claim 1, characterized in that: the outer heating coil is welded with a crude oil inlet nozzle, the inner heating coil is welded with a crude oil outlet nozzle, and the crude oil inlet nozzle and the crude oil outlet nozzle are connected with an external pipeline through WN-RF flanges.
6. The withdrawable double-helix heating coil structure according to claim 1, characterized in that: still include spacing support pull rod, outer heating coil and inlayer heating coil outside axial position all are equipped with four spacing support pull rods, and wherein spacing support pull rod on two adjacent outer heating coils is 90 with the contained angle of outer heating coil center pin, and wherein spacing support pull rod on two adjacent inlayer heating coils is 90 with the contained angle of inlayer heating coil center pin, and wherein spacing support pull rod is connected through spot welding mode with outer heating coil and inlayer heating coil.
7. The withdrawable double-helix heating coil structure according to claim 6, characterized in that: the heating device is characterized by further comprising a front guard plate and a rear guard plate, wherein the front guard plate is arranged on one end face of the outer heating coil and one end face of the inner heating coil, the rear guard plate is arranged on the other end face of the outer heating coil and the other end face of the inner heating coil, and the front guard plate and the rear guard plate are respectively connected with the limiting support pull rod through bolts and nuts.
8. The withdrawable double-helix heating coil structure according to claim 1, characterized in that: the drawable track is a primary-secondary channel steel, wherein the primary-secondary channel steel is formed by embedding two large and small channel steels together, and the drawing function is realized through displacement between the two channel steels.
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| CN201920522368.2U CN210036341U (en) | 2019-04-17 | 2019-04-17 | Drawable double-helix heating coil structure |
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| CN201920522368.2U CN210036341U (en) | 2019-04-17 | 2019-04-17 | Drawable double-helix heating coil structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030848A (en) * | 2019-04-17 | 2019-07-19 | 西安长庆科技工程有限责任公司 | A kind of drawable type double helix heating coil structure and heating means |
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2019
- 2019-04-17 CN CN201920522368.2U patent/CN210036341U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030848A (en) * | 2019-04-17 | 2019-07-19 | 西安长庆科技工程有限责任公司 | A kind of drawable type double helix heating coil structure and heating means |
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Effective date of registration: 20201030 Address after: 710018 Shaanxi province Xi'an Weiyang road Fengcheng four Changqing building Patentee after: XI'AN CHANGQING TECHNOLOGY ENGINEERING Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 710018 Shaanxi city of Xi'an province Fengcheng Weiyang District four building 1809 Changqing Road Patentee before: XI'AN CHANGQING TECHNOLOGY ENGINEERING Co.,Ltd. |
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