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Undulating flow reciprocating screw vibrating cleaning type natural circulating evaporator

A technology of natural circulation and fluctuating flow, applied in the field of automatic cleaning and heat transfer enhancement, it can solve the problems of insufficient cleaning ability of twisted belts and reduced technical difficulty, and achieve the effect of solving insufficient cleaning ability, reduced technical difficulty and simple structure.

Inactive Publication Date: 2014-04-09
俞天翔
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fluctuating flow reciprocating spiral vibration cleaning type natural circulation evaporator proposed by the present invention uses the characteristics of strong fluctuations in the two-phase flow velocity of the steam bubble and the mother liquor in the heating tube of the natural circulation evaporator to realize automatic cleaning, which can not only solve the problem of insufficient cleaning ability of the twisted belt problems, and the structure is far simpler than the scraped evaporator and three-phase fluidized evaporator, and the technical difficulty is greatly reduced

Method used

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  • Undulating flow reciprocating screw vibrating cleaning type natural circulating evaporator
  • Undulating flow reciprocating screw vibrating cleaning type natural circulating evaporator
  • Undulating flow reciprocating screw vibrating cleaning type natural circulating evaporator

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Embodiment Construction

[0014] Attached below figure 1 , the present invention is described in further detail.

[0015] In the figure 1 evaporation chamber 2 mirror 3 strengthening ball 4 tube plate 5 undulating reciprocating spiral 6 heating tube 7 soft spring 8 assembly plate 9 grouping steel wire 10 bottom groove 11 fixed rod 12 heating chamber 13 natural circulation pipe 14 liquid surface 15 sheath 16 supporting ribs 17 outer heating chamber 18 tray 19 tower bottom

[0016] Fluctuating flow reciprocating spiral vibration cleaning type natural circulation evaporator, the main components are heating tube 6, fluctuating reciprocating spiral 5, soft spring 7, assembly plate 8, grouping steel wire 9, evaporation chamber 1, and natural circulation pipe 13.

[0017] The fluctuating reciprocating spiral 5 installed in the heating tube 6 is to utilize the fluctuating velocity of the unstable vapor-liquid two-phase flow caused by the steam bubbles in the evaporator heating tube 6, and the fluctuation of t...

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Abstract

Disclosed is an undulating flow reciprocating screw vibrating cleaning type natural circulating evaporator. An undulating flow reciprocating screw of a steel wire structure is mounted in each heating pipe, the lower end of each undulating flow reciprocating screw is connected with a soft spring which penetrates a fixing plate to be wound and fixed on an assembling plate, and elastic coefficient of the soft springs is low. A fluid dynamic cleaning principle of the undulating flow reciprocating screws includes that high volatility of gas-liquid two-phase flow in the heating pipes is utilized to generate strong radial vibration on self-acting fluid dynamic force and generate axial reciprocating motion with stroke larger than one own screw pitch at the same time, and automatic cleaning of dirt on the inner wall of each pipe and convective heat transfer enhancing are realized. An undulating flow reciprocating screw cleaning mechanism is simple in structure, high in dirt cleaning capability, good in cleaning uniformity, suitable for natural circulating evaporators where dirt is prone to growing, and suitable for outer-heating-chamber natural circulating evaporators and outer-heating-chamber natural circulating reboilers.

Description

technical field [0001] The fluctuating flow reciprocating spiral vibration cleaning type natural circulation evaporator of the present invention relates to the automatic cleaning and heat transfer enhancement in the heating tubes of the natural circulation evaporator and reboiler. It is mainly suitable for evaporators and reboilers with natural circulation structures where dirt is easy to grow in the heating tube, especially hard dirt. Background technique [0002] The structure of the natural circulation evaporator is the simplest, but the natural circulation flow rate is low, and the scaling in the heating tube is faster and thicker than other structural types of evaporators. It needs to be stopped for cleaning more frequently, with the lowest efficiency and the highest energy consumption. [0003] Although the existing evaporator automatic cleaning technology has multiple, all of them are not applicable. The scraper type thin film evaporator produced by many domestic com...

Claims

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Application Information

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IPC IPC(8): F28G13/00
Inventor 俞天翔俞秀民俞天兰彭德其吴金香
Owner 俞天翔
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