CN108981426B - Anti-scaling heat exchanger - Google Patents
Anti-scaling heat exchanger Download PDFInfo
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- CN108981426B CN108981426B CN201810687373.9A CN201810687373A CN108981426B CN 108981426 B CN108981426 B CN 108981426B CN 201810687373 A CN201810687373 A CN 201810687373A CN 108981426 B CN108981426 B CN 108981426B
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- Prior art keywords
- heat exchange
- heat exchanger
- exchange tube
- straight rod
- scaling
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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
- F28D7/16—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 in parallel spaced relation
- F28D7/1607—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 in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
Abstract
The invention discloses an anti-scaling heat exchanger, which comprises a shell, two tube plates and two end sockets, wherein the two tube plates are respectively arranged at two ends of the shell; a plurality of heat exchange tubes are connected between the two tube plates; one of them head outside is provided with one and drives actuating cylinder, and the piston rod that should drive actuating cylinder stretches into in the head that corresponds and is connected with a connecting plate, is connected with the straight-bar that equals and the one-to-one with heat exchange tube quantity on this connecting plate, and every straight-bar is provided with a plurality of separation blades in stretching into the heat exchange tube that corresponds respectively on every straight-bar. The reciprocating movement of the baffle plate in the anti-scaling heat exchanger provided by the invention destroys the laminar flow layer of water flow at the inner wall of the heat exchange tube, avoids the accumulation of impurities in water at the inner wall of the heat exchange tube, and improves the anti-scaling effect.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to an anti-scaling heat exchanger.
Background
The tube type heat exchanger is used for exchanging heat for two-phase fluid, and when the heat exchange tube is used for circulating water, the inner wall of the heat exchange tube is easy to scale, so that the heat exchange effect is reduced. In the prior art, a spring or other bolt-shaped cleaning elements with certain elasticity penetrate through a heat exchange tube, and when circulating water passes through the heat exchange tube, the cleaning elements such as the spring are driven to move back and forth, so that dirt on the inner wall of the heat exchange tube is scraped in real time, and accumulation of the dirt is avoided. But the drawbacks of doing so are mainly: (1) the cleaning element (such as a spring) continuously scrapes off impurities on the inner wall of the heat exchange tube by friction with the inner wall of the heat exchange tube, which causes large friction between the cleaning element and the heat exchange tube; (2) the cleaning element is completely driven by the pressure of water flow, and when the water pressure is relatively low, the elastic part in the heat exchange tube hardly moves and cannot play a role in preventing scaling.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an anti-scaling heat exchanger, and aims to solve the technical problem that a cleaning element in the anti-scaling heat exchanger in the prior art has high requirement on the pressure of circulating water in a heat exchange pipe.
In order to achieve the purpose, the invention adopts the following technical scheme:
an anti-scaling heat exchanger comprises a shell, two tube plates respectively arranged at two ends of the shell, and two seal heads detachably connected with two ends of the shell; a plurality of heat exchange tubes are connected between the two tube plates; one of them head outside is provided with one and drives actuating cylinder, and the piston rod that should drive actuating cylinder stretches into in the head that corresponds and is connected with a connecting plate, is connected with the straight-bar that equals and the one-to-one with heat exchange tube quantity on this connecting plate, and every straight-bar is provided with a plurality of separation blades in stretching into the heat exchange tube that corresponds respectively on every straight-bar.
In the anti-scaling heat exchanger, the connecting plate is provided with an internal threaded hole corresponding to each straight rod, and the end of each straight rod corresponding to the connecting plate is provided with an external thread and screwed into the corresponding threaded hole.
In the anti-scaling heat exchanger, each straight rod is provided with a plurality of groups of blocking pieces at equal intervals along the length direction of the straight rod, each group is provided with 4 blocking pieces, and the included angle between any two adjacent blocking pieces in each group is 90 degrees.
In the anti-scaling heat exchanger, the size of each baffle is equal, and the end part of each baffle is a V-shaped tip.
In the anti-scaling heat exchanger, a blind hole which is matched with the root part of each baffle is formed in each straight rod corresponding to each baffle, and the root part of each baffle is inserted into the corresponding blind hole in an interference fit mode.
In the anti-scaling heat exchanger, each heat exchange tube is a carbon steel tube, and each separation blade is a plastic sheet.
In the anti-scaling heat exchanger, a piston rod of the driving cylinder and the shell are coaxially arranged.
In the anti-scaling heat exchanger, two supports are arranged at the bottom of the shell.
Has the advantages that:
compared with the prior art, the anti-scaling heat exchanger provided by the invention has the following technical advantages that: (1) the friction between the baffle plate and the inner wall of the heat exchange tube is weak, so that the heat exchange tube cannot be damaged. (2) The straight rod can be normally moved by driving the driving cylinder outside, and special requirements on the pressure of circulating water are not required. (3) The reciprocating motion of separation blade has destroyed the laminar flow layer of rivers in heat exchange tube inner wall department, has avoided the impurity of aquatic to accumulate in heat exchange tube inner wall department, has improved the effect of preventing the scale deposit.
Drawings
Fig. 1 is a schematic structural diagram of an anti-scaling heat exchanger provided by the invention.
Fig. 2 is a schematic structural diagram of a tube plate and a heat exchange tube in the anti-scaling heat exchanger provided by the invention.
Fig. 3 is a schematic structural diagram of a straight rod and a baffle plate in the anti-scaling heat exchanger provided by the invention.
Fig. 4 is a sectional view taken along line a-a in fig. 3, in the scale prevention heat exchanger according to the present invention.
Fig. 5 is a front view of a connection plate in the scaling-prevention heat exchanger according to the present invention.
Detailed Description
The invention provides an anti-scaling heat exchanger, which is further described in detail below by referring to the attached drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and more clear and definite. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 5, the present invention provides a scaling-prevention heat exchanger. For ease of understanding, the positions of the piston rod 31, the connecting plate 4 and the straight rod 5 are schematically drawn by dashed lines in fig. 1, but these parts are not directly visible from the outside. The attached drawings are used for explaining the structural principle of the anti-scaling heat exchanger and are not in proportion to actual products.
The anti-scaling heat exchanger comprises a shell, two tube plates 17 respectively arranged at two ends of the shell, two end sockets 21 and 22 respectively detachably connected with two ends of the shell (shown as a flange 19); a plurality of heat exchange tubes 18 are connected between the two tube plates 17; one of them head 21 outside is provided with one and drives actuating cylinder 3, and the piston rod 31 that should drive actuating cylinder stretches into in the head 21 that corresponds and is connected with a connecting plate 4, is connected with the straight-bar 5 that equals and the one-to-one with heat exchange tube 18 quantity on this connecting plate 4, and every straight-bar stretches into respectively that corresponds in that heat exchange tube, is provided with a plurality of separation blades 6 on every straight-bar, and the length of every separation blade is in order to guarantee that straight-bar and separation blade can insert smoothly in the heat exchange tube that corresponds for the standard. Normally, the driving cylinder 3 is fixed to a cylinder mounting 39, and the cylinder mounting 39 is provided on the corresponding head 21. The cylinder piston rod 31 and the connecting plate 4 are preferably screwed, i.e.: the middle of the connecting plate 4 is provided with a threaded hole (not shown in the figure), and the end of the cylinder piston rod 31 is provided with an external thread (not shown in the figure) and screwed into the threaded hole of the connecting plate. In practical application, when the driving cylinder drives the straight rods to do linear reciprocating movement, the moving range of all the blades on each straight rod can cover the whole length of the corresponding heat exchange tube.
In practical application, the anti-scaling heat exchanger should be provided with some connecting pipes, for example, the end enclosure 21 is provided with a water inlet connecting pipe 811, and the other end enclosure 22 is provided with a water outlet connecting pipe 812; inlet and outlet connections 821, 822 are also provided on the housing, respectively. In addition, some conventional components and arrangements for heat exchangers (such as support plates, baffles, etc. of the heat exchange tubes) are not the point of the invention, and thus the drawings are not shown.
Further, in order to facilitate the quick connection between the straight rod 5 and the connecting plate 4, the following arrangement may be made: the connecting plate 4 is provided with an internal threaded hole 401 corresponding to each straight rod, and the end of each straight rod 5 corresponding to the connecting plate 4 is provided with an external thread and screwed into the corresponding threaded hole. Namely, during installation, the straight rod is screwed into the corresponding threaded hole, so that the installation is convenient and quick.
In practical applications, the connection plate 4 is usually configured as a net plate, and the internal thread holes 401 are ensured not to interfere with the meshes 400 of the net plate. The arrangement greatly reduces the resistance of water in the seal head when the connecting plate moves back and forth.
Specifically, in order to facilitate processing and installation, a plurality of groups of blocking pieces are respectively arranged on each straight rod 5 along the length direction of the straight rod at equal intervals, 4 blocking pieces 6 are respectively arranged in each group, and the included angle between any two adjacent blocking pieces in each group is 90 degrees.
Further, each flap 6 is of equal size and the end of each flap is a V-shaped tip 61. The purpose of setting up like this is in the area of contact of the inner wall of minimizing separation blade tip and heat exchange tube for separation blade is more smooth when reciprocating relative to the heat exchange tube inner wall.
In order to facilitate installation of the blocking pieces, a blind hole (not visible in the drawing) which is matched with the root of each blocking piece is formed in each straight rod corresponding to each blocking piece, and the root of each blocking piece is inserted into the corresponding blind hole in an interference fit mode.
Further, each heat exchange tube 18 is a carbon steel tube, and each baffle 6 is a plastic sheet (such as rigid PVC). The arrangement is such that the heat exchange tube is not worn when the respective flaps 6 and the heat exchange tube 18 rub against each other. Of course, the connecting plates 4 and the respective straight bars 5 can also be made of plastic (e.g. rigid PVC, etc.), i.e. with sufficient mechanical strength, while reducing the weight.
Preferably, the piston rod 31 of the drive cylinder and the housing are arranged coaxially.
In practical application, in order to facilitate the installation of the anti-scaling heat exchanger, two support seats 90 are arranged at the bottom of the shell.
For the convenience of understanding, the installation of the straight rod, the connecting plate and the driving cylinder is briefly described as follows: (1) each baffle 6 is arranged on the corresponding straight rod 5 in advance; (2) installing a driving cylinder 3 on the end enclosure 21, inserting a piston rod 31 of the driving cylinder into the end enclosure 21 and connecting the piston rod with the connecting plate 4, (3) screwing each straight rod 5 into a corresponding threaded hole on the connecting plate 4; (4) the end sockets 21 are lifted with the aid of hoisting equipment, and each straight rod is inserted into the corresponding heat exchange tube; (5) the flange 29 between the head and the housing is bolted. The assembly of other conventional components of the heat exchanger will not be described in detail here.
The following brief description is made on the working principle: as shown in fig. 1, the circulating water enters the head 21 at the left end from the water inlet connecting pipe 811, then enters each heat exchange pipe 18, enters the head 22 at the right end, and is discharged from the water outlet connecting pipe 812; another fluid requiring heat exchange enters the shell side through inlet connection 822 and exits through outlet connection 821. The driving cylinder 3 drives the connecting plate 4 and each straight rod 5 to do linear reciprocating motion, and correspondingly, the water flow of each baffle 6 in the heat exchange tube does linear reciprocating motion, so that the track of the water flow is disturbed, the laminar flow layer of the water flow at the inner wall of the heat exchange tube is damaged, the accumulation of impurities in water at the inner wall of the heat exchange tube is avoided, and the purpose of preventing scaling is achieved.
Compared with the prior art, the anti-scaling principle of the anti-scaling heat exchanger provided by the invention is different: the anti-scaling device is not used for continuously scraping the inner wall of the heat exchange tube by the baffle plates, but is used for stirring water flow by the baffle plates to destroy a laminar flow layer of the water flow at the inner wall of the heat exchange tube, so that impurities are prevented from accumulating and having a structure at the inner wall of the heat exchange tube. Due to different anti-scaling principles, the end parts of the baffle plates can be further limited to be V-shaped tips 61, the contact area between the end parts of the baffle plates and the inner wall of the heat exchange tube is further reduced, and the straight rod and the baffle plates can smoothly move in the heat exchange tube.
As can be seen by analysis, the invention has the following technical advantages: (1) the friction between the baffle plate and the inner wall of the heat exchange tube is weak, so that the heat exchange tube cannot be damaged. (2) The straight rod can be normally moved by driving the driving cylinder outside, and special requirements on the pressure of circulating water are not required. (3) The reciprocating motion of separation blade has destroyed the laminar flow layer of rivers in heat exchange tube inner wall department, has avoided the impurity of aquatic to accumulate in heat exchange tube inner wall department, has improved the effect of preventing the scale deposit.
It should be noted that the piston rod of the driving cylinder should be sealed (for example, an O-ring is provided) through the end socket, and the shaft seal itself is the prior art, so the figures do not show the specific structure of the sealing element.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (5)
1. An anti-scaling heat exchanger comprises a shell, two tube plates respectively arranged at two ends of the shell, and two seal heads detachably connected with two ends of the shell; a plurality of heat exchange tubes are connected between the two tube plates; the heat exchanger is characterized in that a driving cylinder is arranged outside one of the end sockets, a piston rod of the driving cylinder extends into the corresponding end socket and is connected with a connecting plate, the connecting plate is connected with straight rods which are equal in number and correspond to the heat exchange tubes one by one, each straight rod extends into the corresponding heat exchange tube, and a plurality of baffle plates are arranged on each straight rod; the connecting plate is provided with an internal threaded hole corresponding to each straight rod, and the end of each straight rod corresponding to the connecting plate is provided with an external thread and screwed into the corresponding threaded hole; each straight rod is respectively provided with a plurality of groups of baffle plates at equal intervals along the length direction, each group is respectively provided with 4 baffle plates, and the included angle between any two adjacent baffle plates in each group is 90 degrees; each baffle plate is equal in size, and the end part of each baffle plate is a V-shaped tip; when the driving cylinder drives the straight rods to do linear reciprocating movement, the moving range of all the blades on each straight rod can cover the whole length of the corresponding heat exchange tube.
2. The anti-scaling heat exchanger according to claim 1, wherein each straight rod is provided with a blind hole corresponding to the root of each baffle plate, and the root of each baffle plate is inserted into the corresponding blind hole in an interference fit manner.
3. The fouling-resistant heat exchanger of claim 2, wherein each heat exchange tube is a carbon steel tube, and each baffle is a plastic sheet.
4. The fouling-resistant heat exchanger of claim 1, wherein the piston rod of the drive cylinder and the housing are coaxially arranged.
5. The fouling-resistant heat exchanger of claim 1, wherein the bottom of the housing is provided with two standoffs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687373.9A CN108981426B (en) | 2018-06-28 | 2018-06-28 | Anti-scaling heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687373.9A CN108981426B (en) | 2018-06-28 | 2018-06-28 | Anti-scaling heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108981426A CN108981426A (en) | 2018-12-11 |
| CN108981426B true CN108981426B (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810687373.9A Active CN108981426B (en) | 2018-06-28 | 2018-06-28 | Anti-scaling heat exchanger |
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| CN (1) | CN108981426B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111721148A (en) * | 2020-07-13 | 2020-09-29 | 李云 | Tubular heat exchanger |
| CN113398616B (en) * | 2021-06-22 | 2022-03-08 | 浙江凯德化工有限公司 | Multi-fraction fractionation system and fractionation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223474Y (en) * | 1994-11-25 | 1996-03-27 | 吕志元 | Automatic rotary screw descaling spoiler tube type heat exchanger |
| CN101122450A (en) * | 2007-09-19 | 2008-02-13 | 孙德兴 | Pull valve type heat-exchanging surface real-time on-line cleaning heat-exchanging device |
| CN104624580A (en) * | 2014-12-07 | 2015-05-20 | 中国石油化工股份有限公司 | Non-contact type pipe wall wax deposition removing device and pipe wall wax deposition removing system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1551498A1 (en) * | 1967-05-24 | 1970-04-23 | Schack & Co Rekuperator | Process and device for the implementation of this process for heat exchange between two separate media |
| CN2180962Y (en) * | 1993-12-17 | 1994-10-26 | 卢秉威 | Scale-free heat-exchanger |
| CN2713426Y (en) * | 2004-06-15 | 2005-07-27 | 南华大学 | On-line descaling and reinforced heat transfer apparatus for heat exchanger |
| CN201522233U (en) * | 2009-10-23 | 2010-07-07 | 大庆石油管理局 | Pipe internal cleaning device |
| CN203816240U (en) * | 2013-09-18 | 2014-09-10 | 兰州理工大学温州泵阀工程研究院 | Automatic online descaling evaporator |
| CN203704769U (en) * | 2014-01-04 | 2014-07-09 | 长沙自洁换热器科技有限公司 | Self-cleaning water cooler |
| CN106568338B (en) * | 2014-06-17 | 2019-01-08 | 江苏西盛家具实业有限公司 | A kind of package heat-exchanger rig |
| CN206891239U (en) * | 2017-06-27 | 2018-01-16 | 常州红太阳药业有限公司 | Fixed tube-sheet exchanger |
-
2018
- 2018-06-28 CN CN201810687373.9A patent/CN108981426B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2223474Y (en) * | 1994-11-25 | 1996-03-27 | 吕志元 | Automatic rotary screw descaling spoiler tube type heat exchanger |
| CN101122450A (en) * | 2007-09-19 | 2008-02-13 | 孙德兴 | Pull valve type heat-exchanging surface real-time on-line cleaning heat-exchanging device |
| CN104624580A (en) * | 2014-12-07 | 2015-05-20 | 中国石油化工股份有限公司 | Non-contact type pipe wall wax deposition removing device and pipe wall wax deposition removing system |
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| Publication number | Publication date |
|---|---|
| CN108981426A (en) | 2018-12-11 |
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