CN112378274A - Compensation mechanism for air cooling tube bundle, compensation method thereof and air cooling tube bundle - Google Patents
Compensation mechanism for air cooling tube bundle, compensation method thereof and air cooling tube bundle Download PDFInfo
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- CN112378274A CN112378274A CN202011259899.0A CN202011259899A CN112378274A CN 112378274 A CN112378274 A CN 112378274A CN 202011259899 A CN202011259899 A CN 202011259899A CN 112378274 A CN112378274 A CN 112378274A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0471—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a non-circular cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a compensation mechanism for an air cooling tube bundle, a compensation method thereof and the air cooling tube bundle, and relates to the technical field of steam air cooling systems, wherein the compensation mechanism comprises a compensation main body and a deformation section; the compensation main body is positioned on the air-cooling tube bundle, and the air-cooling tube bundle and the compensation main body sequentially circulate steam output from the steam distribution pipe; the deformation section is located the compensation main part, self deformation through the deformation section can make the compensation main part extend or shrink along with the inflation or the shrink of air cooling tube bank, take place under the circumstances of inflation or shrink at self when the air cooling tube bank, can make the air cooling tube bank can not extrude or pull the hookup location of self through the deformation compensation of compensation main part and deformation section, the air cooling tube bank that has alleviated existence takes place to pull at inflation or shrink process and splits and cracked condition, thereby cause steam leakage, influence overall system operating efficiency, cause wasting of resources and technical problem with high costs.
Description
Technical Field
The invention relates to the technical field of steam air cooling systems, in particular to a compensation mechanism for an air cooling tube bundle, a compensation method of the compensation mechanism and the air cooling tube bundle.
Background
The direct air cooling system (ACC) consists of a plurality of rows and a plurality of columns of air cooling units according to the unit capacity, each air cooling unit comprises an air cooling pipe bundle, and the heat released to the atmosphere by the air cooling pipe bundles is used for condensing the steam discharged by the steam turbine; the direct air cooling system is characterized in that the air cooling tube bundle can be a downstream tube bundle and a counter-current tube bundle, when the direct air cooling system operates, steam discharged by the steam turbine is distributed to the downstream tube bundle through the steam distribution pipe, the steam flows from the upper part to the lower part of the downstream tube bundle, most of the steam is condensed in the downstream tube bundle unit in the process, and condensed water is converged into the water collecting pipe; in addition, a small part of steam enters the counter-flow tube bundle from the bottom water collecting pipe and is condensed in the process of flowing from bottom to top, condensed water flows back to the water collecting pipe under the action of gravity, and non-condensed gas is collected at the top of the counter-flow tube bundle unit and is discharged from the air suction port.
In the prior art, both concurrent tube bundles and countercurrent tube bundles can generate a steam condensation process; but steam can take place violent change at the in-process temperature of condensation, especially when starting shutting down in winter, the change of temperature this moment is the biggest, when the temperature change in the air cooling tube bank is violent, the air cooling tube bank can take place expansion or shrink this moment, in the in-process that the air cooling tube bank takes place expansion or shrink, can make the welding seam of the position of connecting in the air cooling tube bank take place to split, the cracked condition of air cooling tube bank and steam distribution pipe can take place even, thereby can make steam leakage, influence the operating efficiency and the wasting of resources of overall system, and the problem that cost of maintenance is high.
Disclosure of Invention
The invention aims to provide a compensation mechanism for an air cooling tube bundle, a compensation method thereof and the air cooling tube bundle, so as to relieve the technical problems that the air cooling tube bundle is subjected to tension cracking and fracture in the expansion or contraction process in the prior art, so that steam leakage is caused, the operation efficiency of the whole system is influenced, and the resource waste and the cost are high.
The invention provides a compensation mechanism for an air cooling tube bundle, wherein the air cooling tube bundle is used for conveying steam output by an external steam distribution pipe, and the compensation mechanism comprises: a compensation body and a deformation section;
the compensation main body is positioned on the air-cooling tube bundle and connected with the air-cooling tube bundle, a circulation space is arranged in the compensation main body and communicated with a channel in the air-cooling tube bundle, and the air-cooling tube bundle and the compensation main body sequentially circulate steam output from the steam distribution pipe;
the deformation section is located on the compensation main body, and the deformation section can be relative to the direction of expansion or contraction of air cooling tube bank is deformed, so that the compensation main body is along with the expansion or contraction of air cooling tube bank carries out extension or contraction movement.
In a preferred embodiment of the present invention, the compensation body is connected to the cross section of the air cooling tube bundle in a matching manner, the cross section of the compensation body is rectangular, and two ends of the compensation body of the rectangular structure are arranged in a circular arc chamfer manner.
In a preferred embodiment of the present invention, the deformation section includes a convex portion;
the bulge part is arranged on the side wall of the compensation main body, the bulge part and the compensation main body are integrally formed, and the interior of the bulge part is communicated with the circulation space of the compensation main body;
the bellying direction of bellying with the extending direction of air cooling tube bank is perpendicular setting, the bellying can for the lateral wall of compensation main part is at the reciprocal deformation of bellying direction, in order to compensate air cooling tube bank is at the expansion or the shrink of extending direction.
In a preferred embodiment of the present invention, the boss includes a first boss and a second boss;
the first protruding part and the second protruding part are respectively positioned on two side walls of the compensation main body;
the first protruding parts are uniformly arranged along the side wall of one side of the compensation main body, and the compensation deformation interval range of each first protruding part is 3-5 mm;
the quantity of the second protruding portions is the same as that of the first protruding portions, the second protruding portions are evenly arranged along the side wall of the other side of the compensation main body, and the deformation compensation range of each second protruding portion is 3mm-5 mm.
In a preferred embodiment of the present invention, the deformation section comprises a corrugated connection section;
the ripple linkage segment is located in the compensation main part, just the ripple linkage segment with compensation main part integrated into one piece, the inside circulation passageway that is the bending structure that forms of ripple linkage segment, the circulation passageway of ripple linkage segment with the circulation space intercommunication of compensation main part, the ripple extending direction of ripple linkage segment with the extending direction of air cooling tube bank is the same.
In a preferred embodiment of the present invention, the ripple connecting section includes a plurality of ripples connected in sequence;
the corrugations are sequentially connected along the side wall of the compensation main body, and the deformation compensation range of a single corrugation is 3-5 mm.
In the preferred embodiment of the present invention, the length of the compensation body with a rectangular structure ranges from 200mm to 220 mm;
the width side range of the compensation main body with the rectangular structure is 19mm-25 mm.
The invention provides an air-cooling tube bundle, which comprises a finned tube, a first communicating mechanism, a second communicating mechanism and a compensating mechanism for the air-cooling tube bundle, wherein the finned tube is provided with a first connecting hole;
the finned tubes are arranged in parallel, the finned tubes are located between the first communicating mechanism and the second communicating mechanism, each finned tube is communicated with the first communicating mechanism and the second communicating mechanism respectively, the first communicating mechanism is connected with an external steam distribution pipe, the first communicating mechanism is used for conveying steam into the finned tubes, the second communicating mechanism is connected with an external water collecting pipe, and the finned tubes are used for condensing the steam circulating inside so as to convey the condensed water into the external water collecting pipe;
the compensation main body is positioned on the finned tube, and two ends of the compensation main body are respectively connected with two adjacent sections of the finned tubes; or the compensation main body is positioned between the finned tube and the first communication mechanism, and two ends of the compensation main body are respectively connected with the finned tube and the first communication mechanism; or the compensation main body is positioned between the finned tube and the second communication mechanism, and two ends of the compensation main body are respectively connected with the finned tube and the second communication mechanism;
the flow space of the compensation body is communicated with the channel in the finned tube.
In a preferred embodiment of the present invention, the first communication mechanism includes a first header and a first tube sheet, and the second communication mechanism includes a second header and a second tube sheet;
the first header is connected with the external steam distribution pipe, and one end of the finned tube is connected with the first header through the first tube plate; the second header is connected with an external water collecting pipe, and the other end of the finned pipe is connected with the second header through the second pipe plate;
the finned tubes are obliquely arranged relative to the horizontal plane, and the height of the first header is higher than that of the second header, so that water condensed by the finned tubes is conveyed into an external water collecting pipe along a channel inside the finned tubes.
The invention provides a compensation method based on an air cooling tube bundle, which comprises the following steps:
connecting each finned tube with the compensation main body, wherein the deformation direction of the deformation section is consistent with the extension direction of the finned tube;
finned tubes with compensation bodies are arranged in a herringbone mode by taking the external steam distribution pipe as the center;
connecting a tube bundle formed by a plurality of finned tubes with an external steam distribution pipe through a first communication mechanism;
and the tube bundle formed by the plurality of finned tubes is connected with the external water collecting pipe through a second communication mechanism.
The invention provides a compensation mechanism for an air cooling tube bundle, wherein the air cooling tube bundle is used for being connected with an external steam distribution pipe, and the compensation mechanism comprises: a compensation body and a deformation section; the compensation main body is positioned on the air-cooling tube bundle and connected with the air-cooling tube bundle, a circulation space is arranged in the compensation main body and communicated with a channel inside the air-cooling tube bundle, and the air-cooling tube bundle and the compensation main body sequentially circulate steam output from the steam distribution pipe; the deformation section is located the compensation main part, the deformation section can be for the direction of air cooling tube bank inflation or shrink deformation, self deformation through the deformation section can make the compensation main part along with the inflation or the shrink of air cooling tube bank extend or the shrink motion, consequently, under the condition that the air cooling tube bank takes place inflation or shrink at self, can make the air cooling tube bank can not extrude or pull the hookup location of self through the deformation compensation of compensation main part and deformation section, the air cooling tube bank that has alleviated exists among the prior art takes place the condition of drawing crack and fracture at inflation or shrink process, thereby cause steam leakage, influence overall system operating efficiency, cause the wasting of resources and technical problem with high costs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a compensation mechanism for an air-cooled tube bundle according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another embodiment of a compensating mechanism for an air-cooled tube bundle according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view illustrating a compensating mechanism for an air-cooled tube bundle according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of finned tubes of an air-cooled tube bundle according to an embodiment of the present invention;
fig. 5 is a schematic diagram of the overall structure of an air-cooling tube bundle according to an embodiment of the present invention.
Icon: 100-a compensating body; 101-deformation section; 102-a flow-through space; 200-air cooling the tube bundle; 201-finned tubes; 202-a first communication mechanism; 203-a second communication mechanism; 300-a steam distribution pipe; 400-a water collecting pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, the present embodiment provides a compensating mechanism for an air-cooled tube bundle 200, which is used for delivering steam output from an external steam distribution pipe 300, and includes: a compensating body 100 and a deformation section 101; the compensation main body 100 is positioned on the air-cooling tube bundle 200, the compensation main body 100 is connected with the air-cooling tube bundle 200, a circulation space 102 is arranged in the compensation main body 100, the circulation space 102 is communicated with a channel in the air-cooling tube bundle 200, and the air-cooling tube bundle 200 and the compensation main body 100 sequentially circulate steam output from the steam distribution pipe 300; the deformation section 101 is located on the compensation body 100, and the deformation section 101 can deform relative to the expansion or contraction direction of the air-cooling tube bundle 200, so that the compensation body 100 can perform an extension or contraction motion along with the expansion or contraction of the air-cooling tube bundle 200.
It should be noted that the compensation mechanism for an air-cooling tube bundle provided in this embodiment can form an integral structure with the air-cooling tube bundle 200, where the air-cooling tube bundle 200 can be a forward flow tube bundle or a reverse flow tube bundle; for the direct air cooling system, the forward flow tube bundle can directly receive the steam conveyed by the external steam distribution tube 300, and the reverse flow tube bundle can convey the uncondensed steam and uncondensed gas of the water collection tube 400 and perform secondary condensation, so that the uncondensed steam can be continuously condensed, and the uncondensed gas is discharged by the external extraction tube; the steam is condensed in the air-cooling tube bundle 200, so that the internal temperature of the air-cooling tube bundle 200 is greatly changed, particularly when the air-cooling tube bundle 200 is started or stopped in winter, the air-cooling tube bundle 200 is expanded or contracted due to thermal expansion and contraction, but the finned tubes 201 in the air-cooling tube bundle 200 are limited by the first communication mechanism 202 and the second communication mechanism, so that the finned tubes 201 are subjected to tension cracking and fracture in the expansion or contraction process; have deformation section 101 through compensation main part 100, compensation main part 100 can be located the position between finned tube 201 and the finned tube 201, compensation main part 100 also can be located between finned tube 201 and the first communicating mechanism 202, or be located between finned tube 201 and the second communicating mechanism 203, when the finned tube 201 takes place expansion or shrink, the deformation section 101 of compensation main part 100 can be along with the expansion or the shrink of air cooling tube bank 200 and extend or shrink the motion this moment, and then offset the inside expansion or the shrink stress of finned tube 201, the use of finned tube 201 has been guaranteed, the life of tube bank air cooling 200 has been improved.
The embodiment provides a compensating mechanism for an air-cooled tube bundle 200, the air-cooled tube bundle 200 is used for connecting with an external steam distribution pipe 300, and the compensating mechanism comprises: a compensating body 100 and a deformation section 101; the compensation main body 100 is positioned on the air-cooling tube bundle 200, the compensation main body 100 is connected with the air-cooling tube bundle 200, a circulation space 102 is arranged in the compensation main body 100, the circulation space 102 is communicated with a channel in the air-cooling tube bundle 200, and the air-cooling tube bundle 200 and the compensation main body 100 sequentially circulate steam output from the steam distribution pipe 300; deformation section 101 is located compensation main part 100, deformation section 101 can be for the direction of air cooling tube bank 200 inflation or shrink deformation, self deformation through deformation section 101 can make compensation main part 100 along with the expansion or shrink of air cooling tube bank 200 extend or shrinkage motion, consequently, under the condition that air cooling tube bank 200 takes place inflation or shrink at self, can make air cooling tube bank 200 can not extrude or pull the hookup location of self through the deformation compensation of compensation main part 100 and deformation section 101, the air cooling tube bank 200 of having alleviated among the prior art takes place the condition of drawing crack and fracture at inflation or shrink process, thereby cause steam leakage, influence overall system operating efficiency, cause the technical problem of wasting of resources and with high costs.
In addition to the above embodiments, in a preferred embodiment of the present invention, the compensating body 100 is connected to the cross section of the air cooling tube bundle 200 in a matching manner, the cross section of the compensating body 100 is rectangular, and two ends of the compensating body 100 with rectangular structure are disposed in a circular arc chamfer.
In the preferred embodiment of the present invention, the length of the compensation body 100 with a rectangular structure ranges from 200mm to 220 mm; the compensation body 100 of rectangular configuration has a width side in the range of 19mm to 25 mm.
Preferably, the length side of the compensation body 100 of the rectangular structure is 220 mm; the compensating body 100 of rectangular configuration has a width of 25mm on the sides.
In this embodiment, the compensation main part 100 can satisfy the special construction of the finned tube 201 of air cooling tube bundle 200, the cross-section that utilizes compensation main part 100 is the rectangle structure, make compensation main part 100 can laminate with air cooling tube bundle 200 is perfect, and compensation main part 100 can carry out sealing connection through the welded mode with air cooling tube bundle 200, be provided with the circular arc chamfer that matches with air cooling tube bundle 200 shape at the both ends of the compensation main part 100 of rectangle structure, the circulation space 102 of assurance compensation main part 100 that can be better cooperates with the circulation passageway of air cooling tube bundle 200, guaranteed that steam can be better the circulation passageway in circulation space 102 and air cooling tube bundle 200 flows.
In the preferred embodiment of the present invention, the deformation section 101 includes a protrusion; the protrusion is disposed on a sidewall of the compensation body 100, the protrusion is integrally formed with the compensation body 100, and an inside of the protrusion is communicated with the circulation space 102 of the compensation body 100; the direction of protrusion of bellying and the extending direction of air cooling tube bundle 200 are perpendicular setting, and the bellying can be for compensating the reciprocal deformation of the lateral wall of main part 100 in the direction of protrusion to the expansion or the shrink of air cooling tube bundle 200 in the extending direction.
In this embodiment, the bellying carries out bellyingly for the lateral wall of compensation main part 100, when the expansion takes place for air cooling tube bank 200, the bellying can extend along with the expanding effort to the extending direction of both sides this moment, and then offset the inside expansion stress of air cooling tube bank 200, when the contraction takes place for air cooling tube bank 200, the bellying can contract to central point along with the expanding effort this moment, and then offset the inside contraction stress of air cooling tube bank 200.
When the force of expansion or contraction of the air-cooling tube bundle 200 is large in a cold region in winter, in a preferred embodiment of the present invention, the protrusions include a first protrusion and a second protrusion; the first and second protrusions are respectively located on both side walls of the compensating body 100; the number of the first protruding parts is multiple, the first protruding parts are uniformly arranged along the side wall of one side of the compensation main body 100, and the compensation deformation interval range of each first protruding part is 3mm-5 mm; the number of the second protrusions is the same as that of the first protrusions, the plurality of second protrusions are uniformly arranged along the sidewall of the other side of the compensation body 100, and the deformation compensation range of each second protrusion is 3mm to 5 mm.
In this embodiment, the number of the first protruding portions and the second protruding portions may be specifically set according to the expansion or contraction intervals of different regions, which is not described herein again; in addition, the first protruding portion and the second protruding portion are set, so that the first protruding portion and the second protruding portion can deform together, and on the basis of ensuring the stability of the whole structure, the deformation compensation in the expansion or contraction process of the air cooling tube bundle 200 can be better.
In the preferred embodiment of the present invention, the deformation section 101 comprises a corrugated connection section; the ripple connecting section is located on the compensation main body 100, and the ripple connecting section and the compensation main body 100 are integrally formed, a flow channel with a bending structure is formed inside the ripple connecting section, the flow channel of the ripple connecting section is communicated with the flow space 102 of the compensation main body 100, and the extending direction of the ripple connecting section is the same as the extending direction of the air cooling tube bundle 200.
In this embodiment, the corrugated connection section is the concave-convex structure who buckles for compensating main body 100's lateral wall, and when air cooling tube bank 200 took place the inflation, the corrugated connection section can be extended along with the effort of inflation to the extending direction of both sides this moment, and then offsets air cooling tube bank 200's inside expansion stress, and when air cooling tube bank 200 took place the shrink, the corrugated connection section can be followed the effort of inflation and is shrunk to central point this moment, and then offsets air cooling tube bank 200's inside contraction stress.
When the expansion or contraction force of the air-cooling tube bundle 200 is large in a cold region in winter, in a preferred embodiment of the present invention, the corrugated connecting section includes a plurality of corrugations connected in sequence; the plurality of corrugations are connected in sequence along the side wall of the compensating body 100, and the deformation compensation range of a single corrugation is 3mm-5 mm.
In this embodiment, the number of corrugations of the corrugated connecting section may be specifically set according to the expansion or contraction intervals of different regions, which is not described herein again.
The air-cooling tube bundle provided by the embodiment comprises a finned tube 201, a first communication mechanism 202, a second communication mechanism 203 and the compensation mechanism for the air-cooling tube bundle; the finned tubes 201 are arranged in a plurality, the finned tubes 201 are arranged in parallel, the finned tubes 201 are located between a first communicating mechanism 202 and a second communicating mechanism 203, each finned tube 201 is communicated with the first communicating mechanism 202 and the second communicating mechanism 203 respectively, the first communicating mechanism 202 is connected with an external steam distribution pipe 300, the first communicating mechanism 202 is used for conveying steam into the finned tube 201, the second communicating mechanism 203 is connected with an external water collecting pipe 400, and the finned tubes 201 are used for condensing the steam circulating inside so as to convey the condensed water into the external water collecting pipe 400; the compensation main body 100 is positioned on the finned tube 201, and two ends of the compensation main body 100 are respectively connected with two adjacent sections of finned tubes 201; or, the compensation main body 100 is located between the finned tube 201 and the first communicating mechanism 202, and two ends of the compensation main body 100 are respectively connected with the finned tube 201 and the first communicating mechanism 202; or the compensation main body 100 is positioned between the finned tube 201 and the second communication mechanism 203, and two ends of the compensation main body 100 are respectively connected with the finned tube 201 and the second communication mechanism 203; the flow-through space 102 of the compensating body 100 communicates with the channels in the finned tube 201.
In the preferred embodiment of the present invention, the first communication mechanism 202 includes a first header and a first tube sheet, and the second communication mechanism 203 includes a second header and a second tube sheet; the first header is connected with the external steam distribution pipe 300, and one end of the finned tube 201 is connected with the first header through a first tube plate; the second header is connected with an external water collecting pipe 400, and the other end of the finned tube 201 is connected with the second header through a second tube plate; the finned tubes 201 are arranged obliquely relative to the horizontal plane, and the height of the first header is higher than that of the second header, so that water condensed by the finned tubes 201 is conveyed into the external water collecting pipe 400 along the channel inside the finned tubes 201.
In this embodiment, the finned tubes 201 can be uniformly arranged along the extending direction of the steam distribution pipe 300, and the first header is communicated with the steam distribution pipe 300, the first tube plate is provided with a plurality of mounting rectangular holes for inserting the finned tubes 201, and is connected with the first header through the first tube plate, so that the finned tubes 201 can be fixed on the first header, and the first header can more uniformly convey the gas in the steam distribution pipe 300 to the finned tubes 201; similarly, the second header is communicated with the steam distribution pipe 300, a plurality of mounting rectangular holes for inserting the finned tubes 201 are formed in the second tube plate, and the second header is connected to the second header through the second tube plate, so that the finned tubes 201 can be fixed to the second header, and the water condensed by the finned tubes 201 can be more uniformly delivered into the water collection pipe 400.
Alternatively, the finned tube 201 may be connected to the first tube sheet by welding, and the first tube sheet may be connected to the first header by welding; the finned tube 201 may be connected to the second tube sheet by welding and the second tube sheet may be connected to the second header by welding.
The embodiment provides a compensation method based on an air cooling tube bundle, which comprises the following steps: connecting each finned tube 201 with the compensation main body 100, wherein the deformation direction of the deformation section 101 is consistent with the extension direction of the finned tube 201; finned tubes 201 with compensation bodies 100 are arranged in a herringbone pattern with the external steam distribution pipe 300 as the center; connecting the bundle of finned tubes 201 to an external steam distribution pipe 300 via a first communication means 202; the tube bundle formed by the plurality of finned tubes 201 is connected to the external header 400 through the second communication mechanism 203. Optionally, a fan can be placed at the bottom of the finned tube 201 arranged in a herringbone manner and provided with the compensation body 100, and the heat exchange of the finned tube 201 can be better ensured by blowing of the fan.
Since the technical effect of the compensation method for air-cooling tube bundle provided by this embodiment is the same as that of the compensation mechanism for air-cooling tube bundle provided by the above embodiment, the details thereof are not repeated herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A compensating mechanism for an air-cooled tube bundle for conveying steam output by an external steam distribution tube, comprising: a compensation body and a deformation section;
the compensation main body is positioned on the air-cooling tube bundle and connected with the air-cooling tube bundle, a circulation space is arranged in the compensation main body and communicated with a channel in the air-cooling tube bundle, and the air-cooling tube bundle and the compensation main body sequentially circulate steam output from the steam distribution pipe;
the deformation section is located on the compensation main body, and the deformation section can be relative to the direction of expansion or contraction of air cooling tube bank is deformed, so that the compensation main body is along with the expansion or contraction of air cooling tube bank carries out extension or contraction movement.
2. The compensating mechanism for an air-cooling tube bundle as claimed in claim 1, wherein the compensating body is fittingly connected to a cross section of the air-cooling tube bundle, the cross section of the compensating body has a rectangular structure, and both ends of the compensating body having the rectangular structure are disposed in a circular arc chamfer.
3. A compensating mechanism for an air-cooled tube bundle according to claim 2, wherein the deformation section includes a convex portion;
the bulge part is arranged on the side wall of the compensation main body, the bulge part and the compensation main body are integrally formed, and the interior of the bulge part is communicated with the circulation space of the compensation main body;
the bellying direction of bellying with the extending direction of air cooling tube bank is perpendicular setting, the bellying can for the lateral wall of compensation main part is at the reciprocal deformation of bellying direction, in order to compensate air cooling tube bank is at the expansion or the shrink of extending direction.
4. The compensating mechanism for an air-cooled tube bundle according to claim 3, wherein the bosses include a first boss and a second boss;
the first protruding part and the second protruding part are respectively positioned on two side walls of the compensation main body;
the first protruding parts are uniformly arranged along the side wall of one side of the compensation main body, and the compensation deformation interval range of each first protruding part is 3-5 mm;
the quantity of the second protruding portions is the same as that of the first protruding portions, the second protruding portions are evenly arranged along the side wall of the other side of the compensation main body, and the deformation compensation range of each second protruding portion is 3mm-5 mm.
5. A compensating mechanism for an air-cooled tube bundle according to claim 2, wherein the deformation section comprises a corrugated connecting section;
the ripple linkage segment is located in the compensation main part, just the ripple linkage segment with compensation main part integrated into one piece, the inside circulation passageway that is the bending structure that forms of ripple linkage segment, the circulation passageway of ripple linkage segment with the circulation space intercommunication of compensation main part, the ripple extending direction of ripple linkage segment with the extending direction of air cooling tube bank is the same.
6. The compensating mechanism for an air-cooled tube bundle according to claim 5, wherein the corrugated connecting section includes a plurality of corrugations connected in series;
the corrugations are sequentially connected along the side wall of the compensation main body, and the deformation compensation range of a single corrugation is 3-5 mm.
7. A compensating mechanism for an air-cooled tube bundle according to any one of claims 2 to 6, characterized in that the length sides of the compensating body of rectangular configuration range from 200mm to 220 mm;
the width side range of the compensation main body with the rectangular structure is 19mm-25 mm.
8. An air-cooling tube bundle characterized by comprising a finned tube, first communication means, second communication means, and compensation means for an air-cooling tube bundle according to any one of claims 1 to 7;
the finned tubes are arranged in parallel, the finned tubes are located between the first communicating mechanism and the second communicating mechanism, each finned tube is communicated with the first communicating mechanism and the second communicating mechanism respectively, the first communicating mechanism is connected with an external steam distribution pipe, the first communicating mechanism is used for conveying steam into the finned tubes, the second communicating mechanism is connected with an external water collecting pipe, and the finned tubes are used for condensing the steam circulating inside so as to convey the condensed water into the external water collecting pipe;
the compensation main body is positioned on the finned tube, and two ends of the compensation main body are respectively connected with two adjacent sections of the finned tubes; or the compensation main body is positioned between the finned tube and the first communication mechanism, and two ends of the compensation main body are respectively connected with the finned tube and the first communication mechanism; or the compensation main body is positioned between the finned tube and the second communication mechanism, and two ends of the compensation main body are respectively connected with the finned tube and the second communication mechanism;
the flow space of the compensation body is communicated with the channel in the finned tube.
9. An air-cooled tube bundle according to claim 8, wherein said first communication means includes a first header and a first tube sheet, and said second communication means includes a second header and a second tube sheet;
the first header is connected with the external steam distribution pipe, and one end of the finned tube is connected with the first header through the first tube plate; the second header is connected with an external water collecting pipe, and the other end of the finned pipe is connected with the second header through the second pipe plate;
the finned tubes are obliquely arranged relative to the horizontal plane, and the height of the first header is higher than that of the second header, so that water condensed by the finned tubes is conveyed into an external water collecting pipe along a channel inside the finned tubes.
10. A compensation method for an air-cooled tube bundle according to claim 8 or 9, comprising the steps of:
connecting each finned tube with the compensation main body, wherein the deformation direction of the deformation section is consistent with the extension direction of the finned tube;
finned tubes with compensation bodies are arranged in a herringbone mode by taking the external steam distribution pipe as the center;
connecting a tube bundle formed by a plurality of finned tubes with an external steam distribution pipe through a first communication mechanism;
and the tube bundle formed by the plurality of finned tubes is connected with the external water collecting pipe through a second communication mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011259899.0A CN112378274A (en) | 2020-11-11 | 2020-11-11 | Compensation mechanism for air cooling tube bundle, compensation method thereof and air cooling tube bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011259899.0A CN112378274A (en) | 2020-11-11 | 2020-11-11 | Compensation mechanism for air cooling tube bundle, compensation method thereof and air cooling tube bundle |
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| CN112378274A true CN112378274A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011259899.0A Pending CN112378274A (en) | 2020-11-11 | 2020-11-11 | Compensation mechanism for air cooling tube bundle, compensation method thereof and air cooling tube bundle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115183225A (en) * | 2022-07-01 | 2022-10-14 | 华能国际电力股份有限公司大连电厂 | External superheater for coal-fired boiler |
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| CN2145359Y (en) * | 1992-09-29 | 1993-11-03 | 哈尔滨空气调节机厂 | Pipe bundle of high-temp. air conditioner |
| US20110056653A1 (en) * | 2009-09-08 | 2011-03-10 | Krones Ag | Shell-and-Tube Heat Exchanger |
| US20200318909A1 (en) * | 2017-09-27 | 2020-10-08 | Holtec International | Air-cooled condenser system |
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Application publication date: 20210219 |