CN212747421U - Shell and tube heat exchanger - Google Patents
Shell and tube heat exchanger Download PDFInfo
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- CN212747421U CN212747421U CN202020412407.6U CN202020412407U CN212747421U CN 212747421 U CN212747421 U CN 212747421U CN 202020412407 U CN202020412407 U CN 202020412407U CN 212747421 U CN212747421 U CN 212747421U
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- shell
- baffle plate
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- baffle
- tube
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Abstract
The utility model discloses a shell and tube heat exchanger, the utility model discloses a cooperation of a plurality of first baffling pieces, second baffling piece is used, improves heat exchange efficiency, has solved the ubiquitous problem that flow blind spot, heat exchange efficiency hang down of current bow-shaped baffling board, utilizes the difference of first breach, second breach size, position, makes the direction and the size constantly change of velocity of flow, effectively gets rid of the blind spot, guarantees the long period running of equipment. The first baffle leads out the second medium by utilizing the first notches distributed in the circumferential direction, and simultaneously leads the second medium to the circumferential surfaces at two sides of the baffle plate B by utilizing the turbulence of the turbulence rod A, so that the second medium forms turbulence on the circumferential surfaces at two sides of the baffle plate B, thereby avoiding forming a flow dead zone and being beneficial to heat transfer. The second baffle forms a spiral flow channel through the baffle plate C, and a turbulent flow rod B and the turbulent flow rod C are used for turbulent flow to guide the second medium to the circumferential surfaces of the two sides of the baffle plate C, so that a flow dead zone is prevented from being formed on the circumferential surfaces of the two sides of the baffle plate C.
Description
Technical Field
The utility model particularly relates to a shell and tube heat exchanger.
Background
The shell-and-tube heat exchanger has the advantages of easy manufacture, low production cost, wide material selection range, convenient cleaning, strong adaptability, large treatment capacity, reliable work and capability of adapting to high temperature and high pressure, thereby being in a leading position in the application of industries such as chemical industry, petroleum energy, refrigeration and the like.
In the refrigeration and air-conditioning industry, a shell-and-tube heat exchanger adopts a refrigerant to flow in a heat exchange tube, a secondary refrigerant flows outside the heat exchange tube, baffle plates are sequentially arranged in a shell, mounting holes for fixing the heat exchange tube are formed in the baffle plates, and the outer edges of the baffle plates and the inner edges of the shell and tube are not sealed. At present, in a shell-and-tube heat exchanger, an arch baffle plate is often adopted to guide shell-side fluid, so that short circuit is avoided, and the purpose of heat transfer enhancement is achieved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the weak point of prior art, the utility model provides a shell and tube heat exchanger.
The utility model provides a technical scheme of above-mentioned problem does: a shell-and-tube heat exchanger comprises a shell, a first sealing cover arranged at one end of the shell, a second sealing cover arranged at one end of the shell and positioned at one end of the shell far away from the first sealing cover, a first tube plate and a second tube plate which are respectively arranged at two ends of the shell and form a sealed chamber with the shell, a plurality of heat exchange tubes which are positioned between the first sealing cover and the second sealing cover, two ends of the heat exchange tubes are respectively arranged on the first tube plate and the second tube plate and positioned in the sealed chamber, two ends of the heat exchange tubes are respectively arranged on the first tube plate, the second tube plate is positioned in the sealed cavity, the pull rod is arranged on the pull rod and uniformly distributed along the central axis direction of the shell, the second baffle is arranged on the pull rod and uniformly distributed along the central axis direction of the shell and positioned between two adjacent first baffles, and the distance tube is arranged on the pull rod, and two ends of the distance tube are respectively abutted against the first baffle and the second baffle and used for positioning and limiting;
the first flow folding piece is provided with a plurality of through holes for the heat exchange tubes to pass through, and comprises a baffle plate A with one spherical end protruding outwards towards the direction close to the first end cover, a baffle plate B which is arranged on the baffle plate A and has a hollow round platform structure, and a plurality of turbulence rods A with two ends arranged on the baffle plate B and uniformly distributed along the radial direction of the baffle plate B;
the diameter of the baffle plate B gradually increases from left to right along the direction of the central axis of the shell, and a plurality of first notches which are in a fan-shaped structure and surround the central axis of the baffle plate B are arranged on the circumferential surface of the baffle plate B;
be equipped with a plurality of through-holes that supply the heat exchange tube to pass on the second baffling piece, the second baffling piece includes cavity round platform structure and diameter baffling board C that reduces gradually from left to right along casing central axis direction, both ends are installed on baffling board C and are located baffling board C diameter main aspects, along baffling board C radial direction evenly distributed's many vortex poles B, install on baffling board C and be located baffling board C diameter small aspects, be equipped with the spoiler D of second breach, both ends are installed in baffling board C and are followed baffling board C radial direction evenly distributed, with vortex pole C of vortex pole B vertically.
Further, an included angle between every two adjacent second flow deflecting pieces is 90 degrees;
the second gap is of a fan-shaped structure, and the central angle of the second gap is 90 degrees.
Further, a first medium inlet is formed in the first end cover, and a first medium outlet is formed in the second end cover;
one side of the shell, which is close to the first end cover, is provided with a second medium outlet, one side of the shell, which is close to the second end cover, is provided with a second medium inlet, and the second medium outlet and the second medium inlet are communicated with the sealing chamber.
The utility model discloses beneficial effect has: the utility model discloses a cooperation of a plurality of first baffling pieces, second baffling piece is used, improves turbulent state, improves heat exchange efficiency, has solved the ubiquitous problem that flow blind spot, heat exchange efficiency are low of current bow-shaped baffling board, utilizes the difference of first breach, second breach size, position, makes the direction and the size constantly change of velocity of flow, effectively gets rid of the blind spot, guarantees the long period running of equipment. The first baffle leads out the second medium by utilizing the first notches distributed in the circumferential direction, and simultaneously leads the second medium to the circumferential surfaces at two sides of the baffle plate B by utilizing the turbulence of the turbulence rod A, so that the second medium forms turbulence on the circumferential surfaces at two sides of the baffle plate B, thereby avoiding forming a flow dead zone and being beneficial to heat transfer. The second baffle forms a spiral flow channel through the baffle plate C, and a turbulent flow rod B and the turbulent flow rod C are used for turbulent flow to guide the second medium to the circumferential surfaces of the two sides of the baffle plate C, so that a flow dead zone is prevented from being formed on the circumferential surfaces of the two sides of the baffle plate C.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the present invention;
fig. 3 is a schematic distribution diagram of the first and second deflecting members of the present invention;
fig. 4 is a first schematic structural view of the first flow folding member of the present invention;
fig. 5 is a second schematic structural view of the first baffle of the present invention;
fig. 6 is a first schematic structural view of a second baffle of the present invention;
fig. 7 is a second schematic structural view of the second baffle of the present invention.
In the figure:
1-shell, 2-first cover, 3-second cover, 4-first tube plate, 5-second tube plate, 6-heat exchange tube, 8-first baffle, 9-second baffle, 11-first medium inlet, 12-first medium outlet, 13-second medium inlet, 14-second medium outlet, 15-baffle A, 16-baffle B, 17-spoiler bar A, 18-first gap, 19-spoiler C, 20-spoiler bar B, 21-second gap, 22-spoiler D, 23-spoiler bar C.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
A shell-and-tube heat exchanger comprises a shell 1, a first sealing cover 2 arranged at one end of the shell 1, a second sealing cover 3 arranged at one end of the shell 1 and positioned at one end of the shell 1 far away from the first sealing cover 2, a plurality of heat exchange tubes 6 respectively arranged at two ends of the shell 1 and forming a sealed chamber with the shell 1, a first tube plate 4 and a second tube plate 5 positioned between the first sealing cover 2 and the second sealing cover 3, a plurality of heat exchange tubes 6 respectively arranged at two ends of the first tube plate 4 and the second tube plate 5 and positioned in the sealed chamber, a pull rod respectively arranged at two ends of the first tube plate 4 and the second tube plate 5 and positioned in the sealed chamber, a plurality of first baffling pieces 8 arranged on the pull rod and uniformly distributed along the central axis direction of the shell 1, a second baffling piece 9 arranged on the pull rod and uniformly distributed along the central axis direction of the shell 1 and positioned between two adjacent first baffling pieces, a first baffling piece 8 and a second baffling piece 9 respectively abutted at two, The distance tube is used for positioning and limiting;
the first end cover is provided with a first medium inlet 11, and the second end cover is provided with a first medium outlet 12;
a second medium outlet 14 is formed in one side, close to the first end cover, of the shell 1, a second medium inlet 13 is formed in one side, close to the second end cover, of the shell 1, and the second medium outlet 14 and the second medium inlet 13 are communicated with the sealed chamber.
The first baffle 8 is provided with a plurality of through holes for the heat exchange tubes 6 to pass through, the first baffle 8 comprises a baffle plate A15 with one end of a spherical structure protruding outwards close to the first end cover, a baffle plate B16 which is arranged on the baffle plate A15 and is of a hollow round table structure, and a plurality of turbulence rods A17 with two ends arranged on the baffle plate B16 and uniformly distributed along the radial direction of the baffle plate B16;
the diameter of the baffle plate B16 gradually increases from left to right along the direction of the central axis of the shell 1, and a plurality of first notches 18 which are in a fan-shaped structure and surround the central axis of the baffle plate B16 are arranged on the circumferential surface of the baffle plate B16;
the included angle between two adjacent second flow-deflecting pieces 9 is 90 degrees; be equipped with a plurality of through-holes that supply heat exchange tube 6 to pass on the second baffling piece 9, second baffling piece 9 includes cavity round platform structure and diameter baffling board C that reduces gradually from left to right along 1 the central axis direction of casing 1, both ends are installed on baffling board C and are located baffling board C diameter main aspects, along baffling board C radial direction evenly distributed's many spoiler bars B20, install on baffling board C and be located baffling board C diameter main aspects, spoiler D22 that is equipped with second breach 21, both ends are installed in baffling board C and are followed baffling board C radial direction evenly distributed, spoiler bar C23 perpendicular with spoiler bar B20.
The second notch 21 is of a fan-shaped structure, and the central angle subtended by the second notch 21 is 90 degrees.
Through a plurality of first baffling spare 8, the cooperation of second baffling spare 9 is used, improve turbulent state, strengthen thermal transmission, improve heat exchange efficiency, the ubiquitous blind spot that flows of current bow-shaped baffling board has been solved, the problem that heat exchange efficiency is low, utilize first breach 18, second breach 21 size, the difference of position, play the effect that changes the velocity of flow, the direction and the size constantly change that make the velocity of flow, effectively get rid of the blind spot, reduce shell side flow resistance, guarantee the long period operation of equipment.
The first baffle 8 introduces the second medium to the circumferential surface of the baffle B16 through the spherical structure of the baffle a15 while ensuring that the second medium is in contact with the heat exchange tubes 6 at the intermediate position; the second medium is led out by utilizing the first notches 18 which are distributed in the circumferential direction, and is guided to the circumferential surfaces on the two sides of the baffle plate B16 by utilizing the turbulence of the turbulence rod A17, so that the second medium forms turbulence on the circumferential surfaces on the two sides of the baffle plate B16, the formation of a flow dead zone is avoided, and the heat transfer is facilitated;
the second baffle 9 forms a spiral flow channel through the baffle plate C, and a turbulent flow rod B20 and a turbulent flow rod C23 are used for turbulent flow to guide the second medium to the circumferential surfaces of two sides of the baffle plate C, so that a flow dead zone is prevented from being formed on the circumferential surfaces of two sides of the baffle plate C; the circular truncated cone structure with the small left and the large right of the baffle plate C is utilized to increase the time of the second medium passing through the baffle plate C and prolong the heat exchange time;
the utility model discloses the theory of operation: refrigerant enters from the first medium inlet 11, secondary refrigerant enters from the second medium inlet 13, the secondary refrigerant exchanges heat with the refrigerant fully through the first baffling members 8 and the second baffling members 9, after heat exchange is completed, the refrigerant flows out from the first medium outlet 12, and the secondary refrigerant flows out from the second medium outlet 14.
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 (2)
1. The shell-and-tube heat exchanger is characterized by comprising a shell (1), a first sealing cover (2) arranged at one end of the shell (1), a second sealing cover (3) arranged at one end of the shell (1) and positioned at one end of the shell (1) far away from one end of the first sealing cover (2), a plurality of heat exchange tubes (6) which are respectively arranged at two ends of the shell (1) and form a sealed cavity with the shell (1), a first tube plate (4) and a second tube plate (5) which are positioned between the first sealing cover (2) and the second sealing cover (3), a pull rod which is respectively arranged at two ends of the first tube plate (4) and the second tube plate (5) and positioned in the sealed cavity, a plurality of first baffling pieces (8) which are arranged on the pull rod and are uniformly distributed along the central axis direction of the shell (1), and a plurality of first baffling pieces (8) which are arranged on the pull rod and uniformly distributed along the central axis direction of the shell (1), The second baffle (9) is positioned between two adjacent first baffles, is arranged on the pull rod, and two ends of the second baffle are respectively abutted against the first baffle (8) and the second baffle (9) and a distance tube for positioning and limiting;
the first baffling piece (8) is provided with a plurality of through holes for the heat exchange tubes (6) to pass through, the first baffling piece (8) comprises a baffle plate A (15) with one end of a spherical structure protruding outwards towards the direction close to the first end cover, a baffle plate B (16) which is arranged on the baffle plate A (15) and is of a hollow truncated cone structure, and a plurality of turbulence rods A (17) with two ends arranged on the baffle plate B (16) and uniformly distributed along the radial direction of the baffle plate B (16);
the diameter of the baffle plate B (16) gradually increases from left to right along the direction of the central axis of the shell (1), and a plurality of first gaps (18) which are in a fan-shaped structure and surround the central axis of the baffle plate B (16) in an annular array are arranged on the circumferential surface of the baffle plate B (16);
be equipped with a plurality of through-holes that supply heat exchange tube (6) to pass on second baffling piece (9), second baffling piece (9) include cavity round platform structure and diameter baffling board C that reduces gradually from left to right along casing (1) the central axis direction, both ends are installed on baffling board C and are located baffling board C diameter main aspects, many spoiler bars B (20) along baffling board C radial direction evenly distributed, install on baffling board C and be located baffling board C diameter tip, spoiler D (22) that are equipped with second breach (21), both ends are installed in baffling board C and are followed baffling board C radial direction evenly distributed, with spoiler bar B (20) vertically spoiler bar C (23).
2. A shell and tube heat exchanger according to claim 1, characterised in that the first end cap is provided with a first medium inlet (11) and the second end cap is provided with a first medium outlet (12);
one side of the shell (1) close to the first end cover is provided with a second medium outlet (14), one side of the shell (1) close to the second end cover is provided with a second medium inlet (13), and the second medium outlet (14) and the second medium inlet (13) are communicated with the sealing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020412407.6U CN212747421U (en) | 2020-03-27 | 2020-03-27 | Shell and tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020412407.6U CN212747421U (en) | 2020-03-27 | 2020-03-27 | Shell and tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212747421U true CN212747421U (en) | 2021-03-19 |
Family
ID=74984558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020412407.6U Active CN212747421U (en) | 2020-03-27 | 2020-03-27 | Shell and tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212747421U (en) |
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2020
- 2020-03-27 CN CN202020412407.6U patent/CN212747421U/en active Active
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