CN201110731Y

CN201110731Y - Novel plate-fin heat exchanger two-phase stream gas liquid equipartition apparatus

Info

Publication number: CN201110731Y
Application number: CNU2007201846145U
Authority: CN
Inventors: 章有虎; 阎振贵
Original assignee: HANGZHOU ZHONGTAI PROCESS EQUIPMENT CO Ltd
Current assignee: Hangzhou Zhongtai Cryogenic Technology Co., Ltd.
Priority date: 2007-10-16
Filing date: 2007-10-16
Publication date: 2008-09-03
Anticipated expiration: 2017-10-16

Abstract

The utility model discloses a novel two-phase steam gas-liquid uniform distribution device of a plate-fin heat exchanger, which comprises a liquid charge sealing tape. At least one vertical groove is opened along the length direction of the liquid charge sealing tape, small holes uniformly distributed are opened on the lower wall and the upper wall of the vertical groove, liquid is charged from one end or two ends of the vertical groove, gas passes through the holes of the vertical groove and is uniformly distributed on a whole flow section of the heat exchanger with the liquid. The novel two-phase steam gas-liquid uniform distribution device of a plate-fin heat exchanger can flexibly adjust the liquid flow area, which simplifies manufacturing procedure and reduces manufacturing cost.

Description

New type of plate fin heat exchanger two phase flow gas-liquid even distribution device

Technical field

The utility model relates to the modifying device that biphase gas and liquid flow carries out uniform distribution in a kind of plate-fin heat exchanger, belongs to heat exchanger gas-liquid mixed technical field.

Background technology

When the medium of plate-fin heat exchanger is two phase times, gas phase and liquid phase are evenly distributed on the whole flow area of every layer of passage, be the basis that guarantees the normal heat exchange of two phase flow.Publication number be CN2648381's " the two phase flow gas-liquid even distribution device of plate-fin heat exchanger ", be provided with horizontal fluid injection strip of paper used for sealing between the flow deflector of this device and the heat exchange fin, the end socket of at least one end on the heat exchanger core body outer wall of this fluid injection strip of paper used for sealing taken over liquid and communicated, offer the gas fluting and the uniform aperture of ejection for liquid on the fluid injection strip of paper used for sealing, gas phase is taken away through the liquid that the gas fluting sprays in uniform aperture on by the fluid injection strip of paper used for sealing.Yet, this device is in actual application, be subjected to some restrictions, and the shortcoming that exists some to be difficult to overcome, as: part add man-hour time-consuming and need work post many, can't flexible adaptation when design pressure is high, flow area is restricted, the actual internal area of a fluid injection strip of paper used for sealing cannot be satisfied the demand and be haveed no alternative but use many etc. sometimes.

Summary of the invention

For overcoming the above-mentioned defective of prior art, the purpose of this utility model is to provide a kind of new type of plate fin heat exchanger two phase flow gas-liquid even distribution device, and it can flexible modulation liquid communication cross section, simplified manufacturing procedure, reduced manufacturing cost.

For this reason, the utility model adopts following technical scheme:

A kind of new type of plate fin heat exchanger two phase flow gas-liquid even distribution device, comprise the fluid injection strip of paper used for sealing, length direction along this fluid injection strip of paper used for sealing, offer at least one pod, correspondingly on the lower wall of pod and upper wall offer uniform aperture, liquid is injected by the one or both ends of pod, and the perforate of gas on pod is uniform to the whole flow area of heat exchanger with liquid.The aperture of pod upper wall perforate is greater than the aperture of the perforate of lower wall.Perforate is a square opening.

The beneficial effects of the utility model are:

1, can adapt to the height of design pressure by the size of pod size and how much designing of pod quantity.

2, can select effective actual internal area of pod by the flow of fluid, the flowing velocity of permission, the height of pressure, it is not subjected to the restriction of strip of paper used for sealing specification.Under the condition identical at the shared volume of fluid injection strip of paper used for sealing, that design pressure is identical, structure of the present utility model has the structure in enough big liquid communication cross section.

3, can design the aperture and the quantity of perforate in the fluid injection strip of paper used for sealing by the height of design pressure, the size of liquid phase flow, the size of permission resistance, adapt to the requirement of design condition.Different according to gas and liquid volume flow change the sectional area of fluid injection strip of paper used for sealing bottom opening, can satisfy gas and realize entraining velocity, and not make liquid phase drain to Minimum Technological Requirement in the following fin.Under identical gas-liquid flow, reach identical target, flow resistance of the present utility model can realize minimizing.

4, after the fluid injection strip of paper used for sealing all is to buy section bar, carry out under the condition of machining again, machining amount of the present utility model and man-hours requirement and work post are that " the two phase flow gas-liquid even distribution device of plate-fin heat exchanger " of CN2648381 all will reduce a lot than publication number, have simplified the procedure arrangement of machining.

5, fluid injection strip of paper used for sealing weight of the present utility model is lighter, and compared with prior art, when realizing same function, the gross weight of heat exchanger can descend, and has saved social resources, has reduced production cost.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is that the A-A of Fig. 1 is to schematic diagram.

The specific embodiment

Referring to accompanying drawing.1 is dividing plate on the utility model new type of plate fin heat exchanger two phase flow gas-liquid even distribution device one deck two-phase fluid circulation passage among Fig. 1, and 2 are the fluid injection strip of paper used for sealing.Along the length direction of this fluid injection strip of paper used for sealing, can in the strip of paper used for sealing pulling process, offer one or more pod on demand, this embodiment offers two

pods

3,4, and

pod

3,4 is parallel offering up and down.Upper wall and lower wall at last pod 3 offer

uniform aperture

5,6 respectively, and lower wall offers

uniform aperture

6,7 respectively on following pod 4, and the lower wall perforate of last pod is down the upper wall perforate of pod.Liquid is injected by the one or both ends of pod, is being assigned to by the aperture on the pod wall on the whole flow area of heat exchanger, realizes the even distribution of liquid.

8, the 9th, lay respectively at the fin on fluid injection strip of paper used for sealing both sides about in the of 2, in the following fin 9, only upwards to flow by single gaseous fluid, the even distribution of gas is to be realized by the flow deflector of gas feed place.When running into the fluid injection strip of paper used for sealing, the aperture through fluid injection strip of paper used for sealing bottom promptly descends the aperture 7 of pod lower wall to be evenly distributed on the whole flow area of heat exchanger again.In last fin 8, promptly be that the two-phase fluid of gas-liquid after uniform upwards flows.

Hole count on the sectional area of aperture 7 and the strip of paper used for sealing effective length is long-pending, is to guarantee the ascending air flowing velocity and the critical data that do not cause liquid floor road strip of paper used for sealing bottom.Therefore, can regulate the entraining velocity of air-flow, and utilize aperture, realize the equally distributed purpose of gas-liquid two-phase along the even distributed architecture on the fluid injection strip of paper used for sealing length direction by hole diameter and hole count.

The pore size of

aperture

6,5 is by the resistance size of volume flow after the gas-liquid mixed and permission and the decision of fluid carry-over speed.The pod bar number of fluid injection strip of paper used for sealing is to be decided by the design pressure of this runner and the flowing velocity that allows that how much reaches of liquid phase fluid volume flow.Design pressure height, fluid flow for a long time, the quantity of groove is many, on the contrary the quantity of groove is few.And the width of fluid injection strip of paper used for sealing 2 can freely be selected according to the size of liquid volume flow, and during big flow, the width of available increasing fluid injection strip of paper used for sealing reaches the requirement that the pod number that adapts with design pressure satisfies liquid flow velocity.

Claims

1, a kind of new type of plate fin heat exchanger two phase flow gas-liquid even distribution device, comprise fluid injection strip of paper used for sealing (2), it is characterized in that: along the length direction of fluid injection strip of paper used for sealing, offer at least one pod (3,4), lower wall and upper wall at pod all offer uniform aperture (5,6,7), liquid is injected by the pod end, and gas is distributed on the whole flow area of heat exchanger through the aperture on the pod.

2, new type of plate fin heat exchanger two phase flow gas-liquid even distribution device as claimed in claim 1, it is characterized in that: the aperture of pod upper wall perforate is greater than the aperture of the perforate of lower wall.

3, new type of plate fin heat exchanger two phase flow gas-liquid even distribution device as claimed in claim 1 or 2, it is characterized in that: aperture is a square opening.