CN209459468U - A kind of major diameter tilted spiral shape baffle heat exchanger - Google Patents
A kind of major diameter tilted spiral shape baffle heat exchanger Download PDFInfo
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- CN209459468U CN209459468U CN201920051226.2U CN201920051226U CN209459468U CN 209459468 U CN209459468 U CN 209459468U CN 201920051226 U CN201920051226 U CN 201920051226U CN 209459468 U CN209459468 U CN 209459468U
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Abstract
The utility model belongs to shell-and-tube heat exchanger field of energy-saving technology, for the low heat transfer rate for overcoming traditional heat exchangers, the utility model discloses a kind of major diameter tilted spiral shape baffle heat exchangers, including shell, heat exchanger tube, baffle plate, pull rod distance sink tube, tube sheet and support plate.Baffle plate is made of the more equal part helical baffles of several groups, every group of helical baffles form continuous 360 ° of helical ducts along shell axis, more equal part helical baffles within the scope of 360 ° of each screw pitch are made of six pieces of elliptic sector plates, are on the whole spiral line type;Six pieces of sector flat plate tilt angles of every group of screw pitch may be the same or different, and six pieces of sector flat plate tilt angles of same group of screw pitch can also be different, to make shell side medium journey pulse type spiral flow, the boundary layer of heat exchanger tube is destroyed, core media flow state is improved, improves heat exchange efficiency;In addition fluid flows not big commutation in equipment, can not only reduce shell-side pressure drop, but also can prevent induced vibration.
Description
Technical field
The utility model belongs to shell-and-tube heat exchanger field of energy-saving technology, and in particular to arrives a kind of major diameter tilted spiral
Shape baffle heat exchanger.
Background technique
In the design of existing shell-and-tube heat exchanger, mainly use segmental baffle structure, this structure have it is simple and reliable,
The features such as adaptable and convenient processing and manufacture, but with the development of petrochemical industry, how to further increase shell-and-tube heat exchanger
Performance, especially reduction shell-side pressure drop, improve shell side heat transfer efficiency be emphasis concerned by people.Traditional shell-and-tube heat exchanger
There are flow dead zones for Z-shaped process baffle plate, and flow resistance is big, and heat exchange efficiency is low.Spiral baffle heat exchanger has shell side medium
The low advantage of continuous flowing, shell-side pressure drop, obtained more use in recent years.But the spiral baffling in existing shell-and-tube heat exchanger
Plate be it is interconnected one by one by certain spiral angle by four pieces of fan-shaped plates in each screw pitch, tube bundle support span is opposite
It is larger, it is easy the disadvantages of fouling and induced vibration destroy, due to the effect of centrifugal force for major diameter equipment, core is easy to
It is detained.And major diameter tilted spiral shape baffle heat exchanger can contract under the premise of flow area is basically unchanged
Small support distances avoid tube bundle vibration, reduce shell-side pressure drop, improve heat exchanger core flow regime.
Summary of the invention
The utility model is a kind of major diameter tilted spiral shape baffle heat exchanger, by changing adjacent baffle shape
Shape and the angle form of the composition improve shell side media flow characteristic, reduce leakage current short circuit, form spiral turbulence fluid, eliminate heat exchange
Pipe back side dead zone improves heat exchanger core flow regime, so that relative increase effective heat exchange area, improves heat exchanger efficiency, drop
Low shell-side pressure drop, avoids tube bundle vibration from destroying.
A kind of major diameter tilted spiral shape baffle heat exchanger include shell, heat exchanger tube, baffle plate, pull rod distance sink tube,
Tube sheet and support plate, the utility model technical scheme applied to solve the technical problem is: baffle plate is by the more equal part spiral shells of several groups
Baffle groups are revolved at every group of helical baffles form continuous 360 ° of helical ducts, each screw pitch along shell axis
More equal part helical baffles within the scope of 360 ° are made of six pieces of elliptic sector plates, and heat exchanger tube is fixed on across helical baffles
In shell, multiple groups screw pitch is repeated along shell axis, is on the whole spiral line type, the movement of medium journey zigzag shape.Every group of screw pitch
Six pieces of sector flat plate tilt angles may be the same or different, and six pieces of sector flat plate tilt angles of same group of screw pitch can also
With difference, multiple groups helical baffles repeated arrangement, so that shell side medium journey pulse type spiral be made to flow, the boundary of heat exchanger tube is destroyed
Layer improves core media flow state, increases effective heat transfer area, and the surface of entire heat-exchanging tube bundle is substantially all to become and effectively pass
Heat exchange efficiency is improved in hot face.In addition the curvature of helical duct is relatively uniform, and fluid flows not big commutation in equipment, always
Resistance it is small, can not only reduce shell-side pressure drop, but also flow-induced vibration can be prevented.Each adjacent two pieces of sector flat plates have overlapping portion
Point, it being connected using the overlapping mode of staggeredly point contact, there is a stagger angle in connection, and it is connected and is positioned by pull rod distance sink tube,
Avoid Short circuit leakage.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model;
In figure, fixed tube sheet (1), heat exchanger tube (2), helical baffles (3), slideway (4), support plate (5), pull rod distance sink tube
(6).
Specific embodiment
A kind of major diameter tilted spiral shape baffle heat exchanger is based on traditional shell-and-tube heat exchanger, by shell-and-tube
Baffle plate in heat exchanger is changed to helical baffles, and other structures are all made of the conventional hardware of shell-and-tube heat exchanger.
In Fig. 1, a kind of major diameter tilted spiral shape baffle heat exchanger include shell, heat exchanger tube, helical baffles,
Spacing tubular tie, tube sheet and support plate installation connect and compose.The baffle plate of heat exchanger is by the more equal part helical baffles (3) of several groups
Composition, every group of helical baffles (3) form continuous 360 ° of helical ducts, 360 ° of ranges of each screw pitch along shell axis
It is made of in more equal part helical baffles six pieces of elliptic sector plates, each elliptic sector plate is surrounded on shell axis and using friendship
The overlapping mode of wrong point contact connects, and there is a stagger angle in connection, is axially unfolded in the shape of a spiral along shell, spiral baffling
Plate (3) passes through pull rod distance sink tube (6) in sequence, and spacing tubular tie (6) one end is connected on tube sheet (1), and branch is fixed in one end
It holds on plate (5).Slideway (4) is installed on helical baffles (3), is filled convenient for the pumping of tube bank.Six pieces of sector flat plates of every group of screw pitch
Tilt angle may be the same or different, and six pieces of sector flat plate tilt angles of same group of screw pitch can also be different, multiple groups spiral shell
Baffle plate repeated arrangement is revolved, is on the whole spiral line type, medium helically linear movement, to make shell side medium in pulsed spiral shell
Eddy flow is dynamic, destroys the boundary layer of heat exchanger tube, improves core media flow state, increases effective heat transfer area, in addition helical duct
Curvature it is relatively uniform, fluid flows not big commutation in equipment, and total resistance is small, can not only reduce shell-side pressure drop, but also
It can prevent flow-induced vibration.
Claims (2)
1. a kind of major diameter tilted spiral shape baffle heat exchanger, including shell, heat exchanger tube, baffle plate, pull rod distance sink tube, pipe
Plate and support plate, it is characterized in that: baffle plate uses the more equal part helical baffles of several groups, every group of baffle plate shape along shell axis
At continuous 360 ° of helical duct, the arrangement of multiple groups screw pitch is repeated along shell axis, more equal parts within the scope of 360 ° of each screw pitch
Helical baffles are made of six pieces of sector flat plates.
2. a kind of major diameter tilted spiral shape baffle heat exchanger according to claim 1, it is characterized in that: every group of screw pitch
A kind of six pieces of arrangements of sector flat plate tilt angle be it is identical, another arrangement be tilt angle difference, same group
Six pieces of sector flat plate tilt angle arrangements of screw pitch can be different, multiple groups helical baffles repeated arrangement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920051226.2U CN209459468U (en) | 2019-01-12 | 2019-01-12 | A kind of major diameter tilted spiral shape baffle heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920051226.2U CN209459468U (en) | 2019-01-12 | 2019-01-12 | A kind of major diameter tilted spiral shape baffle heat exchanger |
Publications (1)
Publication Number | Publication Date |
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CN209459468U true CN209459468U (en) | 2019-10-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201920051226.2U Active CN209459468U (en) | 2019-01-12 | 2019-01-12 | A kind of major diameter tilted spiral shape baffle heat exchanger |
Country Status (1)
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CN (1) | CN209459468U (en) |
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2019
- 2019-01-12 CN CN201920051226.2U patent/CN209459468U/en active Active
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