CN210689299U

CN210689299U - Efficient energy-saving tubular heat exchanger

Info

Publication number: CN210689299U
Application number: CN201921222794.0U
Authority: CN
Inventors: 孙佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-06-05
Anticipated expiration: 2029-07-31

Abstract

The utility model provides an energy-efficient tubular heat exchanger which characterized in that: the heat transfer pipe is arranged at two ends inside the shell and connected with the tube plate, the baffle plate is arranged inside the shell and connected with the heat transfer pipe, the first fluid inlet and the first fluid outlet are arranged at two ends of the shell, and the second fluid inlet and the second fluid outlet are respectively arranged on the tube boxes at two ends of the shell; wherein, the heat transfer pipe includes pipeline and guide plate, the guide plate sets up inside the pipeline. The utility model provides a traditional tubular heat exchanger heat transfer efficiency low, the energy consumption is high, and the easy scale deposit of heat-transfer pipe inside and outside wall and casing outer wall influences the problem of heat exchange, has improved a tubular heat exchanger that heat transfer efficiency is high, energy-conserving low consumption.

Description

Efficient energy-saving tubular heat exchanger

Technical Field

The utility model relates to a heat exchanger field especially relates to an energy-efficient tubular heat exchanger.

Background

At present, tubular heat exchangers still dominate in heat exchange equipment used in industrial production at home and abroad. The tubular heat exchanger is a dividing wall type heat exchanger with the wall surface of a tube bundle sealed in a shell as a heat transfer surface, and generally comprises a tube box, the shell, the tube bundle, a tube plate, a baffle plate and other parts. Although this type of heat exchanger has the advantages of simple structure, low cost, wide flow cross-section and easy cleaning, it has the following disadvantages: 1) the heat transfer coefficient is low, the heat transfer effect is poor, and energy waste is caused; 2) flow and heat transfer dead zones are easily generated, and the heat transfer effect is influenced; 3) the surface of the heat pipe and the inside of the shell are easy to form scale, the heat exchange effect of the heat exchanger is greatly influenced, the heat exchange coefficient is reduced, and the heat exchange efficiency is greatly reduced.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing an energy-efficient tubular heat exchanger has solved the problem that heat transfer efficiency is low.

The technical scheme is as follows: the utility model provides a high-efficient energy-conserving tubular heat exchanger, including casing, pipe case, tube sheet, heat-transfer pipe, baffling board, first fluid import, first fluid export, second fluid import and second fluid export, the pipe case sets up at the casing both ends and connects through tube sheet and casing, the heat-transfer pipe sets up inside the casing both ends and tube sheet connection, the baffling board sets up inside the casing and connects with the heat-transfer pipe, first fluid import and first fluid export set up at the casing both ends, second fluid import and second fluid export set up respectively on the pipe case at casing both ends; wherein, the heat transfer pipe includes pipeline and guide plate, the guide plate sets up inside the pipeline. A first fluid (shell-side fluid) enters the shell from a first fluid inlet, flows in the shell under the guidance of the baffle plate and then flows out from a first fluid outlet; a second fluid (tube-side fluid) enters from a second fluid inlet on the tube box, flows along the heat transfer tubes, and exits from a second fluid outlet. In the process, the first fluid (shell-side fluid) and the second fluid (tube-side fluid) exchange heat to realize the heat exchange function. The guide plate is arranged in the pipeline of the heat transfer pipe, so that the second fluid (pipe pass fluid) forms vortex motion in the flowing process, the convection transfer coefficient is improved, and the heat transfer effect is enhanced.

Furthermore, the inner pipe wall and the outer pipe wall of the pipeline are in a wave shape and are composed of tangent circular arcs. The corrugated pipe is a reinforced pipe with the pipe wall processed into a continuous corrugated curve inside and outside, and the design of wave crests and wave troughs not only increases the heat exchange area, but also forms strong disturbance on the inside and the outside of the pipe by the second fluid (pipe pass fluid), thereby greatly improving the heat transfer coefficient of the heat exchange pipe. And because the temperature difference exists between the fluid inside and outside the pipeline, the waveform pipeline can generate certain expansion deformation along the axial direction, the curvature inside and outside the pipeline changes frequently, the pulling-off force can be generated between the dirt attached to the inside and outside of the pipe wall, the dirt can automatically break and fall off, and the attachment of the dirt on the pipe wall is greatly reduced.

Further, the guide plate is a spiral sheet. The spiral guide plate is beneficial to enhancing the radial mixing of the fluid and helping the uniform distribution of the speed and the temperature of the second fluid (tube side fluid) so as to enhance the heat transfer.

Further, the baffle is in the form of an arcuate baffle. The arch baffle plate has simple structure and small flow dead zone.

Further, the baffle plate is twisted. The curved surface of the baffle plate is an arc surface, and the flow curve of the guided first fluid (shell pass fluid) tends to be smooth by utilizing the arc baffle plate and is consistent with the medium circulation channel, so that the flow velocity distribution condition of the shell pass medium is favorably improved, and the flow dead zone and the heat transfer dead zone are reduced.

Further, the baffles are arranged at equal intervals along the heat transfer pipe, and the latter baffle is rotated 180 ° relative to the former baffle. The notch portion of the baffle plate and the shell form a small semicircular closed passage, and the small semicircular closed passage plays a role in guiding a first fluid (shell-side fluid) flowing in the shell.

Furthermore, the first fluid inlet and the second fluid inlet are both provided with filter screens. The impurities in the liquid are removed, and the impurities are prevented from being attached to the inner wall of the shell or a pipeline to influence the heat transfer effect.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: 1) the spiral guide plate is added in the heat transfer pipe, so that the heat transfer coefficient of the second fluid (pipe pass fluid) is improved, and the heat exchange effect is enhanced; 2) the heat transfer pipe is provided with an inner wave-shaped wall and an outer wave-shaped wall, so that the attachment of dirt on the pipe wall is reduced, the heat transfer efficiency is improved, and the heat loss is reduced; 3) the baffle plate is in an arc-shaped twisted shape, so that the flow and heat transfer dead zones are reduced, and the effects of energy conservation and consumption reduction are achieved; 4) the filter screen is additionally arranged at the fluid inlet, so that the attachment of dirt to the inner wall, the outer wall and the inner wall of the shell of the heat transfer pipe is reduced, the work of disassembling and cleaning the heat exchanger is reduced, the working efficiency is improved, and the maintenance cost is reduced.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a partial cross-sectional view of a heat transfer tube.

In the figure: the device comprises a shell 1, a tube box 2, a tube plate 3, a heat transfer tube 4, a tube 41, a deflector plate 42, a baffle plate 5, a first fluid inlet 6, a first fluid outlet 7, a second fluid inlet 8 and a second fluid outlet 9.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

Fig. 1 shows a perspective view of the present invention, which includes a casing 1, a tube box 2, a tube plate 3, a heat transfer tube 4, a baffle plate 5, a first fluid inlet 6, a first fluid outlet 7, a second fluid inlet 8 and a second fluid outlet 9, the tube box 2 is disposed at two ends of the casing 1 and connected to the casing 1 through the tube plate 3, the heat transfer tube 4 is disposed inside the casing 1 and connected to the tube plate 3 at two ends, the baffle plate 5 is disposed inside the casing 1 and connected to the heat transfer tube 4, the first fluid inlet 6 and the first fluid outlet 7 are disposed at two ends of the casing 1, and the second fluid inlet 8 and the second fluid outlet 9 are disposed on the tube box 2 at two ends of the casing 1 respectively.

Fig. 2 is a partial cross-sectional view of a heat transfer tube 4 according to the present invention, which includes a tube 41 and a baffle 42, wherein the baffle 42 is disposed inside the tube 41. The inner and outer pipe walls of the pipeline 41 are in a wave shape and are composed of tangent arcs. The heat transfer area is increased by changing the appearance of the pipeline 41 of the heat transfer pipe 4, the heat transfer efficiency is improved, and the pipeline 41 can also select a spiral groove pipe, a spiral flow pipe, a contraction and expansion pipe, a threaded pipe and the like. The deflector 42 is helical. The baffle plates 42 with different shapes are arranged in the pipe 41 of the heat transfer pipe 4 to change the flow of the second fluid (tube side fluid), thereby increasing the turbulence degree of the fluid, improving the convection heat transfer coefficient and improving the heat exchange efficiency. The deflector 42 may alternatively be helical, twisted, etc.

The baffle 5 is in the form of an arcuate baffle. The baffle plate 5 is twisted. The baffles 5 are arranged at equal intervals along the heat transfer tubes 4, and the previous baffle 5 is rotated 180 ° with respect to the next baffle.

The first fluid inlet 6 and the second fluid inlet 8 are both provided with a filter screen.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an energy-efficient tubular heat exchanger which characterized in that: the heat exchanger comprises a shell (1), tube boxes (2), tube plates (3), heat transfer tubes (4), baffle plates (5), a first fluid inlet (6), a first fluid outlet (7), a second fluid inlet (8) and a second fluid outlet (9), wherein the tube boxes (2) are arranged at two ends of the shell (1) and are connected with the shell (1) through the tube plates (3), the heat transfer tubes (4) are arranged in the shell (1) and are connected with the tube plates (3), the baffle plates (5) are arranged in the shell (1) and are connected with the heat transfer tubes (4), the first fluid inlet (6) and the first fluid outlet (7) are arranged at two ends of the shell (1), and the second fluid inlet (8) and the second fluid outlet (9) are respectively arranged on the tube boxes (2) at two ends of the shell (1); wherein the heat transfer pipe (4) comprises a pipe (41) and a baffle plate (42), and the baffle plate (42) is arranged inside the pipe (41).

2. The high efficiency, energy efficient tubular heat exchanger of claim 1, wherein: the inner and outer pipe walls of the pipeline (41) are in a wave shape and are formed by tangent circular arcs.

3. The high efficiency, energy efficient tubular heat exchanger of claim 1, wherein: the deflector (42) is helical.

4. The high efficiency, energy efficient tubular heat exchanger of claim 1, wherein: the baffle (5) is in the form of an arched baffle.

5. The high efficiency, energy efficient tubular heat exchanger of claim 1, wherein: the baffle plate (5) is twisted.

6. The high efficiency, energy efficient tubular heat exchanger of claim 1, wherein: the baffle plates (5) are arranged at equal intervals along the heat transfer pipe (4), and the front baffle plate (5) rotates 180 degrees relative to the rear baffle plate.

7. The high efficiency, energy efficient tubular heat exchanger of claim 1, wherein: the first fluid inlet (6) and the second fluid inlet (8) are both provided with filter screens.