CN111854476A - Heat exchanger with heat exchange tube not prone to fracture - Google Patents

Heat exchanger with heat exchange tube not prone to fracture Download PDF

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Publication number
CN111854476A
CN111854476A CN202010854631.5A CN202010854631A CN111854476A CN 111854476 A CN111854476 A CN 111854476A CN 202010854631 A CN202010854631 A CN 202010854631A CN 111854476 A CN111854476 A CN 111854476A
Authority
CN
China
Prior art keywords
heat exchange
tube
pipe
exchange tube
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010854631.5A
Other languages
Chinese (zh)
Inventor
陈科荣
钱文
盛凤军
孙超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yixing Yongtuo Mechanical Equipment Co ltd
Original Assignee
Yixing Yongtuo Mechanical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yixing Yongtuo Mechanical Equipment Co ltd filed Critical Yixing Yongtuo Mechanical Equipment Co ltd
Priority to CN202010854631.5A priority Critical patent/CN111854476A/en
Publication of CN111854476A publication Critical patent/CN111854476A/en
Pending legal-status Critical Current

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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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • 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
    • F28F1/24—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 transversely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates

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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 discloses a heat exchanger with a heat exchange tube difficult to break, which comprises an air inlet and outlet distribution tube, wherein a partition plate is arranged in the air inlet and outlet distribution tube to partition the air inlet and outlet distribution tube into a first area and a second area, two pipelines are arranged on the air inlet and outlet distribution tube and are respectively communicated with the first area and the second area, a plurality of heat exchange tube groups arranged in parallel are arranged on the air inlet and outlet distribution tube, each heat exchange tube group comprises an outer heat exchange tube and an inner heat exchange tube, the inner heat exchange tube is positioned in the outer heat exchange tube, one end of the outer heat exchange tube is opened, two ends of the inner heat exchange tube are opened, one end of the opened outer heat exchange tube is connected to the air inlet and outlet distribution tube and is communicated with the first area, one end of the inner heat exchange tube extends out of the outer heat exchange tube and is connected to the partition plate. One end of the heat exchange tube set is a free end, the thermal expansion of the heat exchange tube set is not limited at all, the problem of thermal stress is avoided, and the heat exchange tube is not easy to break.

Description

Heat exchanger with heat exchange tube not prone to fracture
Technical Field
The invention relates to the field of heat exchangers, in particular to a heat exchanger with a heat exchange tube not easy to break.
Background
The heat exchanger is the equipment that is used for the heat exchange, and the heat exchange tube both ends of traditional heat exchanger are fixed, because there is thermal stress in the operation of heat exchange tube, there is the difference in the thermal stress between the heat exchange tube, will lead to the shrinkage degree between the heat exchange tube different like this, lead to partial heat exchange tube fracture.
Disclosure of Invention
The invention aims to provide a heat exchanger with a heat exchange tube not easy to break.
The invention has the innovation points that one end of the heat exchange tube set is a free end, the thermal expansion of the heat exchange tube set is not limited at all, the free thermal expansion is met, the problem of thermal stress is avoided, and the heat exchange tube is not easy to break.
In order to achieve the purpose, the technical scheme of the invention is as follows: a heat exchanger with a heat exchange tube difficult to break comprises an air inlet and outlet distribution tube, wherein a partition plate is arranged in the air inlet and outlet distribution tube to divide the air inlet and outlet distribution tube into a first area and a second area, two pipelines are arranged on the air inlet and outlet distribution tube and are respectively communicated with the first area and the second area, a plurality of heat exchange tube sets arranged in parallel are arranged on the air inlet and outlet distribution tube, each heat exchange tube set comprises an outer heat exchange tube and an inner heat exchange tube, the inner heat exchange tube is positioned in the outer heat exchange tube, one end of the outer heat exchange tube is opened, two ends of the inner heat exchange tube are opened, one end of the opening of the outer heat exchange tube is connected to the air inlet and outlet distribution tube and is communicated with the first area, one end of the inner heat exchange tube extends out of the outer heat exchange tube and is connected to the partition plate and is communicated with the second area, a.
Furthermore, the two pipelines are respectively an air inlet pipe and an air outlet pipe, the first area is an air inlet area, the second area is an air outlet area, the air inlet pipe is communicated with the first area, and the air outlet pipe is communicated with the second area.
Furthermore, the two pipelines are respectively an air inlet pipe and an air outlet pipe, the first area is an air outlet area, the second area is an air inlet area, the air inlet pipe is communicated with the second area, and the air outlet pipe is communicated with the first area.
Furthermore, a limiting plate is arranged at the free end of the heat exchange tube group, a plurality of counter bores or through holes used for penetrating the heat exchange tube group are formed in the limiting plate, the limiting plate and the gas inlet and outlet distribution tube are connected through two supporting plates, the supporting plates are respectively connected to the two ends of the limiting plate and the two ends of the gas inlet and outlet distribution tube, and the limiting plate, the gas inlet and outlet distribution tube and the two supporting plates form a square frame structure. The heat exchange tube set can be limited, and abnormal sound generated by vibration of the heat exchange tube set in heat exchange is avoided.
Further, be fixed with the heat exchange tube support frame between two backup pads, the heat exchange tube support frame is parallel with business turn over gas distribution pipe, the heat exchange tube support frame both ends are fixed on two backup pads, be equipped with a plurality of semi-circular notches that are used for the card to go into the heat transfer outer tube on the heat exchange tube support frame. The vibration of the heat exchange tube is avoided.
Furthermore, a plurality of fin plates are sleeved outside the heat exchange outer pipe, and the fin plates are stainless steel fin plates. The heat exchange efficiency is higher.
Furthermore, the air outlet pipe is positioned at the bottom of the air inlet and outlet distribution pipe. The water generated after steam heat exchange can be prevented from being accumulated in the gas outlet area to cause the gas inlet and outlet distribution pipes to be rotten.
The invention has the beneficial effects that:
1. one end of the heat exchange tube set is a free end, the thermal expansion of the heat exchange tube set is not limited at all, the free thermal expansion is met, the problem of thermal stress is avoided, and the heat exchange tube is not easy to break.
2. The air outlet pipe is positioned at the bottom of the air inlet and outlet distribution pipe, so that water generated after steam heat exchange is prevented from being accumulated in the air outlet area, and the air inlet and outlet distribution pipe is prevented from being rotten.
3. According to the invention, the limiting plate is arranged at the free end of the heat exchange tube set, so that the heat exchange tube set can be limited, and abnormal sound caused by vibration of the heat exchange tube set in heat exchange is avoided.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is a schematic structural view of embodiment 2.
Fig. 3 is a schematic structural view of a support frame for a heat exchange tube.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1: as shown in fig. 1, a heat exchanger with a heat exchange tube not prone to fracture comprises an inlet and outlet gas distribution tube 1, a partition plate 2 is arranged in the inlet and outlet gas distribution tube 1 to divide the inlet and outlet gas distribution tube 1 into a first region 1.1 and a second region 1.2, two pipelines are arranged on the inlet and outlet gas distribution tube 1 and are respectively communicated with the first region 1.1 and the second region 1.2, the two pipelines are respectively an inlet pipe 4 and an outlet pipe 5, the first region 1.1 is an inlet region, the second region 1.2 is an outlet region, the inlet pipe 4 is communicated with the first region 1.1, and the outlet pipe 5 is communicated with the second region 1.2. The air outlet pipe 5 is positioned at the bottom of the air inlet and outlet distribution pipe 1. Be provided with a plurality of parallel arrangement's heat exchange tube group 3 on business turn over gas distribution pipe 1, heat exchange tube group 3 includes heat transfer outer tube 3.1 and heat transfer inner tube 3.2, heat transfer inner tube 3.2 is located heat transfer outer tube 3.1, heat transfer outer tube 3.1 one end opening, heat transfer inner tube 3.2 both ends opening, heat transfer outer tube 3.1 opening one end is connected on business turn over gas distribution pipe 1 and is distinguished 1.1 intercommunication with one, heat transfer inner tube 3.2 one end is stretched out heat transfer outer tube 3.1 and is connected on division board 2 and distinguish 1.2 intercommunication with two, there is the interval between heat transfer outer tube 3.1 inner wall and the heat transfer inner tube 3.2 outer wall, there is the interval in heat transfer inner tube 3.2 and the free tip of heat.
During operation, steam enters the air inlet area from the air inlet pipe 4, then enters the space between the side walls of the heat exchange outer pipe 3.1 and the heat exchange inner pipe 3.2, then enters the heat exchange inner pipe 3.2 from the free end of the heat exchange inner pipe 3.2, enters the air outlet area from the joint of the heat exchange inner pipe 3.2 and the partition plate 2, and finally is discharged from the air outlet pipe 5.
Example 2: as shown in fig. 2 and 3, a heat exchanger with a heat exchange tube not prone to fracture comprises an inlet and outlet gas distribution tube 1, a partition plate 2 is arranged in the inlet and outlet gas distribution tube 1 to divide the inlet and outlet gas distribution tube 1 into a first region 1.1 and a second region 1.2, two pipelines are arranged on the inlet and outlet gas distribution tube 1 and are respectively communicated with the first region 1.1 and the second region 1.2, the two pipelines are respectively an inlet pipe 4 and an outlet pipe 5, the first region 1.1 is an outlet region, the second region 1.2 is an inlet region, the inlet pipe 4 is communicated with the second region 1.2, and the outlet pipe 5 is communicated with the first region 1.1. Be provided with a plurality of parallel arrangement's heat exchange tube group 3 on the business turn over gas distribution pipe 1, heat exchange tube group 3 includes heat transfer outer tube 3.1 and heat transfer inner tube 3.2, and heat transfer inner tube 3.2 is located heat transfer outer tube 3.1, and the outside cover of heat transfer outer tube 3.1 is equipped with a plurality of fin plates 9, and fin plate 9 is the stainless steel fin plate. Heat transfer outer tube 3.1 one end opening, heat transfer inner tube 3.2 both ends opening, heat transfer outer tube 3.1 opening one end is connected on business turn over gas distribution pipe 1 and with one district 1.1 intercommunication, heat transfer inner tube 3.2 one end is stretched out heat transfer outer tube 3.1 and is connected on division board 2 and with two district 1.2 intercommunications, there is the interval between heat transfer outer tube 3.1 inner wall and the heat transfer inner tube 3.2 outer wall, there is the interval in heat transfer inner tube 3.2 and the free end portion of heat transfer outer tube 3.1. The free end of the heat exchange tube group 3 is provided with a limiting plate 6, the limiting plate 6 is provided with a plurality of counter bores or through holes for penetrating the heat exchange tube group 3, the limiting plate 6 is connected with the air inlet and outlet distribution tube 1 through two supporting plates 7, the supporting plates 7 are respectively connected with the two ends of the limiting plate 6 and the air inlet and outlet distribution tube 1, and the limiting plate 6, the air inlet and outlet distribution tube 1 and the two supporting plates 7 form a square frame structure. A heat exchange tube support frame 8 is fixed between the two support plates 7, the heat exchange tube support frame 8 is parallel to the air inlet and outlet distribution tubes 1, two ends of the heat exchange tube support frame 8 are fixed on the two support plates 7, and a plurality of semicircular notches 3.11 used for being clamped into the heat exchange outer tubes 3.1 are arranged on the heat exchange tube support frame 8.
During operation, steam enters the air inlet area from the air inlet pipe 4, then enters the heat exchange inner pipe 3.2 from the joint of the heat exchange inner pipe 3.2 and the partition plate 2, then enters the space between the side walls of the heat exchange outer pipe 3.1 and the heat exchange inner pipe 3.2 from the free end of the heat exchange inner pipe 3.2, then enters the air outlet area, and finally is discharged from the air outlet pipe 5.
The described embodiments are only some embodiments of the invention, not all embodiments. 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.

Claims (7)

1. A heat exchanger with a heat exchange tube not easy to break is characterized by comprising an air inlet and outlet distribution tube, the gas inlet and outlet distribution pipe is internally provided with a partition plate which divides the gas inlet and outlet distribution pipe into a first area and a second area, the gas inlet and outlet distribution pipe is provided with two pipelines which are respectively communicated with the first area and the second area, the gas inlet and outlet distribution pipe is provided with a plurality of heat exchange pipe sets which are arranged in parallel, each heat exchange pipe set comprises a heat exchange outer pipe and a heat exchange inner pipe, the heat exchange inner pipe is positioned in the heat exchange outer pipe, one end of the heat exchange outer pipe is opened, two ends of the heat exchange inner pipe are opened, one end of the opening of the heat exchange outer pipe is connected to the gas inlet and outlet distribution pipe and is communicated with the first area, one end of the heat exchange inner pipe extends out of the heat exchange outer pipe to be connected to the partition plate and communicated with the second area, a space exists between the inner wall of the heat exchange outer pipe and the outer wall of the heat exchange inner pipe, and a space exists between the free end portion of the heat exchange inner pipe and the free end portion of the heat exchange outer pipe.
2. The heat exchanger with the heat exchange tube not easy to break as claimed in claim 1, wherein the two tubes are respectively an air inlet tube and an air outlet tube, the first zone is an air inlet zone, the second zone is an air outlet zone, the air inlet tube is communicated with the first zone, and the air outlet tube is communicated with the second zone.
3. The heat exchanger with the heat exchange tube not easy to break as claimed in claim 1, wherein the two tubes are respectively an air inlet tube and an air outlet tube, one zone is an air outlet zone, the other zone is an air inlet zone, the air inlet tube is communicated with the two zones, and the air outlet tube is communicated with the one zone.
4. The heat exchanger of claim 1, wherein a limiting plate is disposed at a free end of the heat exchange tube set, the limiting plate is provided with a plurality of counter bores or through holes for passing through the heat exchange tube set, the limiting plate and the inlet/outlet distribution tube are connected by two supporting plates, the supporting plates are respectively connected to two ends of the limiting plate and the inlet/outlet distribution tube, and the limiting plate, the inlet/outlet distribution tube and the two supporting plates form a square frame structure.
5. The heat exchanger of claim 4, wherein a heat exchange tube support is fixed between the two support plates, the heat exchange tube support is parallel to the inlet and outlet distribution tubes, two ends of the heat exchange tube support are fixed on the two support plates, and the heat exchange tube support is provided with a plurality of semicircular notches for clamping into the heat exchange outer tubes.
6. The heat exchanger with the heat exchange tube not prone to fracture as claimed in claim 1, wherein a plurality of fin plates are sleeved outside the heat exchange outer tube, and the fin plates are stainless steel fin plates.
7. The heat exchanger with the heat exchange tube not easy to break as claimed in claim 2 or 3, wherein the outlet pipe is positioned at the bottom of the inlet and outlet gas distribution tube.
CN202010854631.5A 2020-08-24 2020-08-24 Heat exchanger with heat exchange tube not prone to fracture Pending CN111854476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010854631.5A CN111854476A (en) 2020-08-24 2020-08-24 Heat exchanger with heat exchange tube not prone to fracture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010854631.5A CN111854476A (en) 2020-08-24 2020-08-24 Heat exchanger with heat exchange tube not prone to fracture

Publications (1)

Publication Number Publication Date
CN111854476A true CN111854476A (en) 2020-10-30

Family

ID=72970498

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010854631.5A Pending CN111854476A (en) 2020-08-24 2020-08-24 Heat exchanger with heat exchange tube not prone to fracture

Country Status (1)

Country Link
CN (1) CN111854476A (en)

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