CN2164008Y - Horizontal finned tube heat exchanger - Google Patents
Horizontal finned tube heat exchanger Download PDFInfo
- Publication number
- CN2164008Y CN2164008Y CN 93233428 CN93233428U CN2164008Y CN 2164008 Y CN2164008 Y CN 2164008Y CN 93233428 CN93233428 CN 93233428 CN 93233428 U CN93233428 U CN 93233428U CN 2164008 Y CN2164008 Y CN 2164008Y
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- tube
- heat exchanger
- circulating
- solids
- inlet
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Abstract
The utility model relates to a liquid-solid circulation fluidized online cleaning technology for the dirt in a horizontal structure tube heat exchanger tube. The device structure is mainly characterized in double tube sides, an inlet chamber for inclining an isolation plate, an outlet chamber which has the functions of solid particle separation and storage collection, a circulating tube which has a proper height and a fluidized inlet tube. The utility model is generally a periodicity fluidized cleaning, and the periodicity is determined by the dirt accumulation speed. The devices whose tube side flow rate can not reach the minimum transporting flow rate u < M2 > in normal running need to be provided with an outlet liquid reflux valve, a circulating pump and a circulating pipeline system. The utility model has strong dirt cleaning ability and good effect through the device test of the eight calandria phi 25 by 2.5 by 6000 and carries out engineering design for the 765 tube of phi 1000 and the large device of phi 25 by 2.5 by 6000, and the results show that the economic benefit of the comprehensive technology is good.
Description
This invention belongs to a kind of liquid-solid circulating fluidization on-line cleaning technology of dirt in the horizontal tubular heat exchanger.The fluidization pipe of relevant tubular heat exchanger dirt is a lot of at the document of line technology, for example EP65333, US4554963 etc.But these technology only are applicable to vertical equipment, yet the equipment of commercial Application mostly is horizontal equipment, and quantity decuples vertical equipment approximately.
Purpose of the present invention is exactly to be to propose a kind of liquid-solid circulating fluidization on-line cleaning technology that can be applicable to dirt in the horizontal tubular heat exchanger pipe.Its know-why be in, thin solids after the fluidization, enter maintenance fluidized state fluidisation inlet in, to be higher than particle minimum delivery flow velocity U in the fluidisation inlet tube
M2Speed through in the heat-transfer pipe process of level, the dirt removal with in the pipe then enters the downstream chamber.Because earlier under the effect of guide plate, with direction flow inlet and outlet chamber on the lower side, then upwards flow to outlet again, realize liquid-solid separation by the inertia of solids, solids are deposited in the district that concentrates of downstream chamber, again because the flow velocity that outlet liquid stream makes progress at the a-b of downstream chamber section is lower than the sinking speed of liquid-solid particle, and prevent that effectively solids from being exported liquid stream and taking away, concentrate solids in the district rely on circulation pipe to be back in the fluidisation inlet tube with the density contrast formation motive force of fluidisation inlet natural recirculating type and recycle.
Fig. 1 is exactly a horizontal fluidization tubular heat exchanger schematic diagram of the present invention.
Solids ［ 1 ］ can be the common sand of tube side liquid process license or the particle of other material, and particle size is generally below 3mm. Particle ［ 1 ］ fluidization in fluidisation inlet tube ［ 2 ］ enters fluidization inlet ［ 3 ］. The architectural feature of fluidization inlet ［ 3 ］ is that the mounting inclination angle α of division board ［ 21 ］ is in 30 °～75 ° scopes. Purpose is both to have guaranteed the interior homogeneous fluidization of inlet ［ 3 ］, and the interior solids in district ［ 11 ］ that are conducive to again concentrate flow downward.
The arrangement mode of heat-transfer pipe ［ 5 ］ is not limit, and number of tube passes is generally 2, and the separation and the loop structure of the solids of this structure are the simplest.The shape of end socket ［ 6 ］ can be common end socket, but can not be to deepen end socket especially, otherwise fluidization liquid stream the deposition of solids just might occur at this.This end socket ［ 6 ］ wall thickness can suitably be thickeied, to consider the erosion corrosion of fluidization particle to it.The installation oblique angle β of the guide plate ［ 7 ］ of downstream chamber ［ 22 ］ is in 30 °～65 ° scopes, and effect is flowing of making progress after making liquid stream cause an elder generation on the lower side, realizes the inertial separation of solids.The length L of guide plate ［ 7 ］ is (0.25～0.50) D
1, D
1Be the diameter of heat exchanger shell ［ 4 ］, the depth H size of the a-b section ［ 8 ］ of downstream chamber ［ 22 ］ is design like this, makes this place equal speed of liquid levelling upwards 0.9 times less than the solids sinking speed, and avoiding solids is that outlet liquid stream is carried secretly.The vertical height h of solids circulation pipe ［ 12 ］ is like this design, circulates the tube side drag overall of pressure reduction greater than this equipment by what it and the density contrast of inlet tube ［ 1 ］ formation caused.The diameter D of circulation pipe ［ 12 ］
2Can in the scope of structural design permission, get higher value, so as circulation pipe ［ 12 ］ with concentrate district ［ 11 ］ both enough needed solids of total measurement (volume) storage tube side system are arranged.The quantity of the solids ［ 1 ］ that the tube side system is required is that volume is more than 1/40 of whole tube side purging system volume.
For solids ［ 1 ］ are remained in the scope of allowing the wearing and tearing of heat-transfer pipe, ad hoc circulation valve ［ 13 ］ is so that carry out periodic cleaning.The length of cleaning frequency is then by the decision of the incrustation speed in the Exchanger Tubes ［ 5 ］.
Because tube side fluid must be higher than minimum delivery flow velocity U by the flow velocity of the heat-transfer pipe ［ 5 ］ of level
M2, just can carry out normal fluidization scale removal cleaning.But, the tube side flow velocity of most of horizontal tubular heat exchangers is lower than this value just often, just need set up return valve ［ 9 ］ in this case, reflux pipeline ［ 10 ］, circulating pump ［ 14 ］, close down this return-flow system during normal the operation, open this return-flow system made the flow stream velocity of heat-transfer pipe ［ 5 ］ be higher than minimum delivery flow velocity U when the cycle cleaned
M2
The present invention once had such example.
Example 1. heat-transfer pipe φ 25 * 2.5 * 6000, vertical direction 8 rows (two-tube-pass, every tube side 4 rows).Tube side liquid is cooling water, the flow velocity 1.4m/g during cleaning.Solids directly adopt common river sand, and granularity is 10～14 orders.Test shows that the scale removal ability is strong, and is effective.
Example 2. condenser diameter phi 1000, totally 756 of condenser pipe φ 25 * 2.5 * 6000, two-tube-pass, 378 of every tube sides are cooling water in the pipe, the operate as normal flow velocity is 0.6m/s.The cleaning flow velocity of design is 1.4m/s, and solids are 10～14 purpose river sands.End socket ［ 6 ］ is common standard elliptical head.Downstream chamber's end socket is dark 1000, the long 360mm of guide plate, and 55 ° of mounting inclination angle β, the mounting inclination angle of division board ［ 21 ］ is 50 °.Circulation pipe ［ 12 ］ D
m300, vertical height h4500mm.Pump flow 340m
3/ h, lift 4M, power 6KW.Its complex art economic indicator is much better than the Cycle Stop cleaning method.
Claims (5)
1, the horizontal tubular heat exchanger of circulating fluidization in a kind of pipe, it mainly is to be made of parts such as housing [4], heat-transfer pipe [5], inlet [3], downstream chamber [8], end socket [6], solids [1], the particle circulatory system and liquid return-flow systems, it is characterized in that:
A) division board [21] with angle mount is separated between inlet [3] and downstream chamber [8],
B) guide plate [7] of angle mount is arranged in downstream chamber [8],
C) natural cycle system of solids is arranged,
D) return-flow system that exports liquid is arranged.
2, the horizontal tubular heat exchanger of circulating fluidization in the pipe according to claim 1 is characterized in that the angle mount angle α of ［ 21 ］ of division board=30 °～65 °.
3, the horizontal tubular heat exchanger of circulating fluidization in the pipe according to claim 1 is characterized in that the angle mount angle β of guide plate ［ 7 ］=30 °～75 °.
4, the horizontal tubular heat exchanger of circulating fluidization in the pipe according to claim 1 is characterized in that the natural cycle system of solids ［ 1 ］ is made up of circulation pipe ［ 12 ］, fluidisation inlet tube ［ 2 ］, circulating valve ［ 13 ］.
5, the horizontal tubular heat exchanger of circulating fluidization in the pipe according to claim 1 is characterized in that the liquid return-flow system is made up of reflux cycle pump ［ 14 ］, reflux pipeline ［ 10 ］, return valve ［ 9 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233428 CN2164008Y (en) | 1993-03-10 | 1993-03-10 | Horizontal finned tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233428 CN2164008Y (en) | 1993-03-10 | 1993-03-10 | Horizontal finned tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164008Y true CN2164008Y (en) | 1994-05-04 |
Family
ID=33809364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93233428 Expired - Fee Related CN2164008Y (en) | 1993-03-10 | 1993-03-10 | Horizontal finned tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164008Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100354593C (en) * | 2003-06-13 | 2007-12-12 | 株洲工学院帅科机械清洗研究所 | Horizontal column type heat exchanger exterior dirt three-phase fluidization in-situ cleaning process |
| CN1657860B (en) * | 2004-02-16 | 2010-05-12 | 湖南工业大学 | Vertical tubulation heat-transfer equipment with on-line fluidization cleaning function for dirt on outer of pipe |
| CN102954731A (en) * | 2011-08-26 | 2013-03-06 | 俞天翔 | Efficient energy-saving water-saving water-cooled condenser |
-
1993
- 1993-03-10 CN CN 93233428 patent/CN2164008Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100354593C (en) * | 2003-06-13 | 2007-12-12 | 株洲工学院帅科机械清洗研究所 | Horizontal column type heat exchanger exterior dirt three-phase fluidization in-situ cleaning process |
| CN1657860B (en) * | 2004-02-16 | 2010-05-12 | 湖南工业大学 | Vertical tubulation heat-transfer equipment with on-line fluidization cleaning function for dirt on outer of pipe |
| CN102954731A (en) * | 2011-08-26 | 2013-03-06 | 俞天翔 | Efficient energy-saving water-saving water-cooled condenser |
| CN102954731B (en) * | 2011-08-26 | 2015-05-06 | 俞天翔 | Efficient energy-saving water-saving water-cooled condenser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |