CN217442329U - Oblique fork plate baffling ring heat exchanger - Google Patents
Oblique fork plate baffling ring heat exchanger Download PDFInfo
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- CN217442329U CN217442329U CN202123271668.4U CN202123271668U CN217442329U CN 217442329 U CN217442329 U CN 217442329U CN 202123271668 U CN202123271668 U CN 202123271668U CN 217442329 U CN217442329 U CN 217442329U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The utility model relates to an inclined fork plate baffle ring heat exchanger, belonging to the technical field of heat exchangers; comprises a shell, wherein a heat exchange tube is arranged in the shell; the baffle ring is connected with the inner wall of the shell; be equipped with the oblique crotch baffling subassembly of connecting in order in the baffling circle, the oblique crotch baffling subassembly includes the baffling piece that two oblique forks were arranged, and the heat transfer tube hole is seted up to two baffling piece junctions, and the heat transfer tube hole is used for wearing to adorn the heat exchange tube. The utility model discloses the fluid obviously increases at casing velocity of flow to the rapid development is the turbulent flow, helps strengthening the washing away momentum to the heat exchange tube surface, promotes the local mixture behind medium and the heat exchange tube interact, is favorable to strengthening the heat transfer performance.
Description
Technical Field
The utility model relates to an oblique crotch board baffling circle heat exchanger belongs to heat exchanger technical field.
Background
The shell-and-tube heat exchanger has the advantages of simple structure, wide applicable pressure range, high reliability, mature technology and wide application in petroleum and chemical production. The improvement of the heat exchange efficiency of the heat exchanger has a very positive effect on improving the operation quality of the device and reducing the cost of unit products, so the research of people on the improvement of the heat exchange efficiency of the shell-and-tube heat exchanger is continuously improved for many years. Currently, conventional segmental baffle heat exchangers have several disadvantages in industrial practice: (1) the shell side medium flows through the tube bundle in a zigzag mode, and a plurality of dead zones are formed in the flowing process, so that the heat transfer area is not fully utilized, and the heat transfer coefficient of the shell side is reduced; (2) due to the sudden contraction and expansion of the medium flow, the fluid impacts the shell wall, and the pressure drop on the shell side is large; (3) the shell side stream is perpendicular to the tube bundle induced vibration, making the tube bundle susceptible to failure.
In recent years, people generally use a rod baffle heat exchanger capable of effectively improving heat transfer efficiency, and compared with an arch baffle heat exchanger, the rod baffle heat exchanger has the advantages that: (1) the heat transfer dead zone which is usually existed is basically eliminated, and the utilization rate of the heat exchange area of the equipment is improved; (2) the flow state of the medium is improved, so that the shell-side fluid medium can flow along the extension direction of the 'array tube bundle', the inner medium and the outer medium of the heat exchange tube are mutually countercurrent along the axial direction of the tube, and the heat exchange tube has good heat transfer performance; (3) due to the fixing effect of the staggered baffle rods, the shell side allows the medium with higher flow velocity to flow, the flow velocity is increased, and the medium in the fluid is not easy to deposit and scale.
However, the rod baffle heat exchanger has the following technical defects:
the shell side medium flows longitudinally, the turbulent flow effect of the baffle rod is weak, the shell side flow velocity is low, and the heat transfer capacity is insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides an oblique crotch board baffling circle heat exchanger, and the fluid velocity of flow obviously increases in the casing to the rapid development is the turbulent flow, helps strengthening the scouring momentum to the heat exchange tube surface, promotes the local mixture after medium and the heat exchange tube interact, is favorable to strengthening the heat transfer performance.
The inclined fork plate baffle ring heat exchanger comprises a shell, wherein a heat exchange tube is arranged in the shell; the baffle ring is connected with the inner wall of the shell; be equipped with the oblique crotch baffling subassembly of connecting in order in the baffling circle, the oblique crotch baffling subassembly includes the baffling piece that two oblique furcations arranged, and the heat transfer tube hole is seted up to two baffling piece junctions, and the heat transfer tube hole is used for wearing to adorn the heat exchange tube.
The baffling rings and the baffling sheets arranged at the oblique forks can enable shell-side fluid of the heat exchanger to flow in a mixed manner of oblique flow and jet flow, increase the disturbance degree of shell-side media, strengthen local absorption and coiling, enable the fluid to quickly enter a fully turbulent flow state, and improve the convective heat exchange strength; after the shell-side fluid sequentially flows through the baffle rings, the fluid shows oblique and longitudinal mixed flow, and due to the action of wall-attached jet flow, the fluid is ejected from the gaps between the baffle plates, the flow speed is obviously increased, the fluid rapidly develops into turbulent flow, the scouring momentum on the surface of the heat exchange tube is enhanced, the local mixing of the medium and the heat exchange tube after interaction is promoted, and the heat exchange performance is enhanced.
The angle of the oblique fork arrangement of the baffling sheet is 30-60 degrees.
The oblique fork baffling component is integrally bent and formed and can be integrally bent and formed by steel plates.
The deflecting ring is internally and sequentially connected with the oblique fork deflecting component which is integrally bent and formed.
The deflecting ring and the oblique fork deflecting component are welded into a whole.
The shell is provided with a shell pass medium outlet and a shell pass medium inlet, and the inclined fork plate baffling ring is arranged between the shell pass medium outlet and the shell pass medium inlet.
The inclined fork plate baffle rings are arranged at equal intervals along the heat exchange tube.
The arrangement distance of the deflecting rings of the inclined fork plates is 50-100 mm.
The opening formed by the baffle sheets arranged at the two oblique forks in the oblique fork baffle component is arranged corresponding to the direction of the shell side medium.
Compared with the prior art, the beneficial effects of the utility model are that:
the inclined fork plate baffling ring of the utility model can make the shell side fluid of the heat exchanger flow in an inclined flow and jet flow mixing manner by arranging the baffling ring and the baffling sheets arranged on the inclined fork, thereby increasing the disturbance degree of the shell side medium, strengthening local suction and coiling, quickly making the fluid enter a fully turbulent flow state, and improving the convective heat transfer strength; after the shell-side fluid sequentially flows through the baffle rings, the fluid shows oblique and longitudinal mixed flow, and due to the action of wall-attached jet flow, the fluid is ejected from the gaps between the baffle plates, the flow speed is obviously increased, the fluid rapidly develops into turbulent flow, the scouring momentum on the surface of the heat exchange tube is enhanced, the local mixing of the medium and the heat exchange tube after interaction is promoted, and the heat exchange performance is enhanced.
Adopt heat exchanger of crotch board baffling circle to one side, with the comparison of size rod baffle heat exchanger, the shell side heat transfer coefficient of crotch board baffling circle heat exchanger to one side can promote 170% -200%. Compared with a deflecting rod heat exchanger, the inclined fork plate deflecting ring heat exchanger has higher shell pass heat transfer coefficient and pressure drop under the same mass flow, the comprehensive performance is improved by 2.1-24%, and the heat exchange efficiency is improved more obviously especially under low flow.
Drawings
FIG. 1: the structure of the embodiment 1 of the utility model is schematically shown,
FIG. 2: the structure of the deflecting ring of the oblique fork plate in the embodiment 1 of the utility model is schematically shown,
FIG. 3: FIG. 2 is a schematic sectional view of the structure at D-D;
FIG. 4: the enlarged structure of the part A in FIG. 1 is schematically shown.
In the figure: 1. a pipe box; 2. a tube side medium inlet; 3. a tube sheet; 4. a shell-side medium inlet; 5. a heat exchange pipe; 6. the oblique fork plate baffling ring; 7. a housing; 8. an outer head cover; 9. a shell-side medium outlet; 10. a tube side medium outlet;
61. a baffling ring; 62. a baffle sheet; 63. a heat exchange tube hole;
theta represents the orientation angle of the deflecting sheet arranged at the oblique fork in the deflecting ring of the oblique fork plate;
l represents the spacing value of the deflecting rings of the inclined fork plates in the shell at equal intervals;
arrow B indicates the tube side media flow direction;
arrow C indicates the shell-side medium flow direction.
Detailed Description
Example 1
As shown in fig. 1 to 4, the oblique fork plate baffle ring heat exchanger of the present invention comprises a housing 7, a heat exchange tube 5 is arranged in the housing 7, a tube plate 3 and a tube box 1 are arranged at one end of the housing, and an outer cover 8 is arranged at the other end of the housing; the shell 7 is provided with a shell side medium outlet 9 and a shell side medium inlet 4, and the inclined fork plate baffling ring 6 is arranged between the shell side medium outlet 9 and the shell side medium inlet 4. The baffle ring 61 is connected with the inner wall of the shell 7; the baffling ring can be obtained by bending round steel into a circular ring;
as shown in fig. 2-3, the deflecting ring 61 is internally provided with oblique-fork deflecting assemblies connected in sequence, each oblique-fork deflecting assembly comprises two deflecting pieces 62 arranged obliquely, a heat exchange tube hole 63 is formed at the joint of the two deflecting pieces 62, and the heat exchange tube hole 63 is used for penetrating and installing a heat exchange tube 5, and holes are uniformly drilled along the center of each group of oblique-fork deflecting pieces.
As shown in fig. 3, the baffle plate 62 is obliquely arranged at an angle of 30-60 °. The angle of oblique arrangement of the deflecting pieces 62 is also called as the deflecting piece orientation angle theta of oblique arrangement in the deflecting ring of the oblique-fork plate. Typically, θ may be 30 °, 45 °, or 60 degrees; because the size of theta directly influences the у axle velocity component of the flow velocity, у axle velocity component increases, is favorable to cutting down heat exchange tube boundary layer thickness, strengthens heat exchange performance. However, when θ is too small, the left baffle blocks the flow of the fluid, and the flow guide effect of the right baffle is reduced. Tests prove that when theta is reduced from 60 degrees to 45 degrees, the heat transfer coefficient is obviously improved; as the decrease continues to 30 deg., the spacing between the fold lines narrows, during which the change in heat transfer coefficient is not significant.
The openings formed by the baffle plates 62 arranged at two oblique branches are arranged corresponding to the direction of the shell-side medium.
As shown in fig. 3, the oblique fork baffle assembly is integrally formed by bending, and can be formed by bending a steel plate.
As shown in fig. 2-3, the oblique-fork baffle assemblies sequentially connected in the baffle ring 61 are integrally bent and formed, and all the oblique-fork baffle assemblies in the baffle ring can be obtained by sequentially bending steel plates for multiple times, and then are welded with the baffle ring into a whole.
As shown in fig. 1-3, the deflecting ring 61 is welded with the oblique fork deflecting component as a whole.
As shown in fig. 1 to 4, the heat exchange tubes 5 are arranged through the heat exchange tube holes 63, and the baffle rings 61 are attached to the inner wall of the shell 7.
The inclined fork plate baffling rings 6 are arranged at equal intervals along the heat exchange tube 5. The arrangement pitch of the deflecting rings 6 of the inclined forks is 50-100mm, namely the pitch value L of the deflecting rings 6 of the inclined forks which are arranged along the heat exchange tube 5 at equal intervals is 50-100 mm. Typically, L may be 50mm, 60mm, 70mm, 80mm, 90mm or 100 mm.
The pressure drop of the fluid is directly influenced by the size of the spacing L of the baffle rings. Generally, the pressure drop will become larger as L is shorter. However, when the value of L is excessively shortened, the resistance to fluid flow is greatly increased, and the negative effect on the heat exchange performance is multiplied. Moreover, the ratio of the distance between the baffle rings to the inner diameter of the shell is reduced, so that the turbulence and the speed fluctuation of the pipe wall and the shell wall accessory can be enhanced, and the heat transfer coefficient is enhanced. Tests prove that the distance between the deflecting rings is larger than 19.6% of the inner diameter of the shell, and preferably, the heat transfer coefficient, the pressure drop and the comprehensive performance of the shell reach an excellent state when the distance L between the deflecting rings is 60-80 mm.
Working process or working principle:
the tube side medium enters the tube box 1 from the tube side medium inlet 2 and then flows into the heat exchange tube 5 to flow along the heat exchange tube 5 in the axial direction. Meanwhile, a shell-side medium enters the shell 7 from the shell-side medium inlet 4, is gathered near the deflection ring of the first inclined bifurcation plate, and flows into a gap between the heat exchange tube hole and the heat exchange tube under the flow guiding action of the deflection sheets arranged on the inclined bifurcation, and then flows through the gap between the heat exchange tube hole and the deflection ring to present mixed flow in an inclined direction and a longitudinal direction. After passing through the deflection ring interval of one oblique bifurcation plate, the shell-side medium is gathered near the deflection ring of the second oblique bifurcation plate, and similarly, the medium flows into the gap between the heat exchange tube hole and the heat exchange tube under the flow guiding action of the deflection sheets arranged on the oblique bifurcation plate, and forms mixed flow in an oblique direction and a longitudinal direction after passing through the deflection ring of the second oblique bifurcation plate. The movement is repeated and extended to the last inclined fork plate baffling ring, and the shell-side medium passes through the inclined fork plate baffling ring and then is converged to the shell-side medium outlet 9 and finally flows out of the shell.
In the movement, the shell-side medium is ejected from the gap between the baffle plates to form the action of adherent jet flow, so that the flow speed of the fluid is obviously increased and the fluid rapidly develops into turbulent flow; the heat exchange tube is beneficial to strengthening the scouring momentum on the surface of the heat exchange tube, promoting the local mixing of fluid and the heat exchange tube after interaction, and being more beneficial to strengthening the heat exchange performance.
When the shell-side medium flows through the deflecting ring 6 of the oblique bifurcation plate, the deflecting sheet component consisting of the deflecting sheets 62 arranged at the two oblique bifurcations is arranged, and the opening formed by the deflecting sheets arranged at the two oblique bifurcations is arranged corresponding to the direction from which the shell-side medium comes, so that the deflecting sheets arranged at the oblique bifurcations can generate the converging effect on the dispersed fluid, the fluid flowing through the deflecting ring 6 of the oblique bifurcation plate presents the mixed flow of the oblique direction and the longitudinal direction, and the fluid is ejected from the gap between the deflecting sheets and can form the effect of wall-attached jet flow, thereby obviously increasing the flowing speed of the fluid and rapidly developing the fluid into turbulent flow. The orientation angle theta of the deflecting pieces arranged at the oblique forks adjusts the force of convergence.
In the actual operation of the heat exchanger, the tube side medium flows axially in the heat exchange tube 5 along the axis of the heat exchange tube 5, and the movement of the shell side fluid at the outer side of the heat exchange tube 5 is turbulent flow flowing at high speed, so that after the tube side medium and the shell side medium are fully contacted in the shell side, the heat transfer coefficient of the shell side of the whole heat exchanger is improved by 170-200% compared with that of a baffling rod heat exchanger with the same specification, the comprehensive performance is improved by 2.1-24% compared with that of the baffling rod heat exchanger with the same specification, and particularly, the improvement of the heat exchange efficiency is more obvious under the condition of low flow.
The utility model discloses in to the direction of structure and the description of relative position relation, it is right not to constitute like the description from top to bottom all around the utility model discloses a restriction only is the description convenient.
Claims (8)
1. The inclined fork plate baffling ring heat exchanger comprises a shell (7), wherein a heat exchange tube (5) is arranged in the shell (7), and is characterized by further comprising a baffling ring (61), wherein the baffling ring (61) is connected with the inner wall of the shell (7); an oblique bifurcation deflecting component connected in sequence is arranged in the deflecting ring (61), the oblique bifurcation deflecting component comprises two deflecting pieces (62) arranged obliquely, a heat exchange tube hole (63) is formed at the joint of the two deflecting pieces (62), and the heat exchange tube hole (63) is used for penetrating and installing a heat exchange tube (5);
the angle of the oblique fork arrangement of the baffling sheet (62) is 30-60 degrees.
2. The oblique-fork plate baffle ring heat exchanger of claim 1, wherein the oblique-fork baffle assembly is integrally formed by bending.
3. The oblique-fork baffle-ring heat exchanger according to claim 2, characterized in that the oblique-fork baffle components connected in sequence in the baffle ring (61) are integrally formed by bending.
4. The oblique-fork plate baffle ring heat exchanger according to any one of claims 1 to 3, characterized in that the baffle ring (61) is welded integrally with the oblique-fork baffle assembly.
5. The inclined fork plate baffling ring heat exchanger according to claim 4, wherein the shell (7) is provided with a shell-side medium outlet (9) and a shell-side medium inlet (4), and the inclined fork plate baffling ring (6) is arranged between the shell-side medium outlet (9) and the shell-side medium inlet (4).
6. The oblique-fork-plate baffle-ring heat exchanger according to claim 5, characterized in that the oblique-fork-plate baffle-rings (6) are arranged at equal intervals along the heat exchange tubes (5).
7. The inclined-branched plate baffling ring heat exchanger according to claim 6, characterized in that the inclined-branched plate baffling rings (6) are arranged at a pitch of 50-100 mm.
8. The oblique-fork plate baffle ring heat exchanger according to claim 4, wherein the openings formed by the baffle sheets (62) arranged at two oblique forks in the oblique-fork baffle assembly are arranged corresponding to the direction from the shell-side medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123271668.4U CN217442329U (en) | 2021-12-23 | 2021-12-23 | Oblique fork plate baffling ring heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123271668.4U CN217442329U (en) | 2021-12-23 | 2021-12-23 | Oblique fork plate baffling ring heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN217442329U true CN217442329U (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123271668.4U Active CN217442329U (en) | 2021-12-23 | 2021-12-23 | Oblique fork plate baffling ring heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115479209A (en) * | 2022-11-15 | 2022-12-16 | 无锡特莱姆气体设备有限公司 | Efficient and energy-saving intermediate medium gasifier |
-
2021
- 2021-12-23 CN CN202123271668.4U patent/CN217442329U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115479209A (en) * | 2022-11-15 | 2022-12-16 | 无锡特莱姆气体设备有限公司 | Efficient and energy-saving intermediate medium gasifier |
| CN115479209B (en) * | 2022-11-15 | 2023-03-10 | 无锡特莱姆气体设备有限公司 | Efficient and energy-saving intermediate medium gasifier |
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