CN201306943Y

CN201306943Y - Difficult-icing air-bath gasifier

Info

Publication number: CN201306943Y
Application number: CNU2008201862496U
Authority: CN
Inventors: 俞军
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-17
Filing date: 2008-10-17
Publication date: 2009-09-09
Anticipated expiration: 2018-10-17

Abstract

The utility model provides an air-bath gasifier. With the adoption of the gasifier, an upper fin of the air-bath gasifier is not easy to be iced up, and the effect of heating gasification is ensured. The air-bath gasifier comprises a liquid feeding tube, fin heat-exchange tubes and a gas discharging tube and is characterized in that multiply segments of fin heat-exchange tubes are connected and communicated with each other by connecting tubes, and the space between the fin heat-exchange tubes is changed from big to small along the flowing direction of liquid medium.

Description

A kind of not-easy-to-freeze air-bathing gasifier

(1) technical field

The utility model relates to the air-bathing gasifier technical field, is specially a kind of not-easy-to-freeze air-bathing gasifier.

(2) background technology

The cryogenic media that low-temperature storage tank attracts, enter the air-bathing gasifier heating and gasifying, because the liquid medium temperature initially reaches subzero about 196 ℃, during with traditional finned tube, because the tube side of its inlet of fin surface is owing to exist moisture in the air, cryogenic media absorbs the heat in the atmosphere in this tube side, can condense to go up thick ice sheet, and the heating vaporization effect is sharply descended.

(3) summary of the invention

At above-mentioned defective, the utility model provides a kind of air-bathing gasifier, and it can accomplish that finned tube is not-easy-to-freeze on the air-bathing gasifier, guarantees the effect of heating vaporization.

Its technical scheme is as follows: it comprises feed tube, fin heat exchange pipe, escape pipe, it is characterized in that: described fin heat exchange pipe is that the multistage fin heat exchange pipe connects conducting by tube connector, along the flow direction of liquid medium, the descending variation of the spacing between the fin heat exchange pipe.

It is further characterized in that: described fin heat exchange pipe is that the different heat exchange pipeline section of multistage number of fins is formed; Along the flow direction of liquid medium, the fin number from less to more; Described fin heat exchange pipe section comprises the heat exchange pipeline section with 4 fins, be connected with described feed tube after the input parallel connection of described heat exchange pipeline section with 4 fins, every with the heat exchange pipeline section of 4 fins respectively by being linked in sequence communicating pipe with the heat exchange pipeline section of 8 fins with the heat exchange pipeline section of 12 fins.

After the utility model adopts said structure, form because fin heat exchange pipe is a multistage fin heat exchange pipe section, every section intersegmental distance of heat exchanger tube does not wait, and distance values from big to small, make the finned tube that is in the state that easily freezes have bigger heat convection space and heat to carry out heat exchange, make finned tube not-easy-to-freeze; Add the structure that fin heat exchange pipe is different fin numbers, cryogenic media enters the air-bathing gasifier heating and gasifying, easily the heat exchanger tube of icing state adopts less fin structure in its porch, because fin is few, environment temperature around it is just fallen fewly, not-easy-to-freeze, even if moisture can be tied ice sheet on the finned tube surface more for a long time in the atmosphere, but because this finned tube fin number is few, freeze and also can conveniently remove, its heat exchange effect of very fast recovery is because along with medium temperature progressively heats raising, although the heat exchanger tube fin number that tube connector connects progressively increases, thereafter heat exchanger tube surface generally just can not freeze yet, heat exchange effect preferably can be arranged, thereby guaranteed that further finned tube is not-easy-to-freeze, thereby ensure good heating vaporization effect.

(4) description of drawings

Fig. 1 looks schematic diagram for master of the present utility model;

Fig. 2 is the schematic top plan view of Fig. 1.

(5) specific embodiment

See Fig. 1, Fig. 2, the utility model comprises feed tube 1, fin heat exchange pipe, escape pipe 7, fin heat exchange pipe is that multistage fin heat exchange pipe section is by tube connector 4,6 connect conducting, flow direction along liquid medium, the descending variation of spacing between the fin heat exchange pipe section, the fin number from less to more, the fin heat exchange pipe section comprises the heat exchanger tube 2 with 4 fins, be connected with feed tube 1 after the input parallel connection with the heat exchange pipeline section of 4 fins, every with the heat exchange pipeline section of 4 fins respectively by being linked in sequence communicating pipe with the heat exchange pipeline section 3 of 8 fins with the heat exchange pipeline section 5 of 12 fins, 8 is support, 9,10 is respectively blind flange.

The direction of arrow is the direction of cryogenic medium flows among Fig. 2, subzero about 196 ℃ low temperature liquid medium is by below feed tube 10, flow into the heat-exchange finned tube 2 that first row has 4 fins with parallel way by 4 feed tubes 1, the back is by entering the heat-exchange finned tube 2 that second row has 4 fins 4 communicating pipe of top 4, because this tube side liquid medium temperature is minimum, for making atmosphere that bigger fluid space and heat are heated to medium be arranged, two arrange longitudinal pitch A maximum between the heat-exchange finned tube 2 that has 4 fins; Liquid medium through the heat-exchange finned tubes 2 of two rows with 4 fins after, temperature to improve, and when entering two rows down with the heat-exchange finned tube 3 of 8 fins, the temperature difference between itself and atmosphere has reduced, just more not-easy-to-freeze than preceding two rows, so select medium big longitudinal pitch B for use; Medium is after arranging heat-exchange finned tubes through preceding four, a lot of heats in the atmosphere have been absorbed, make liquid medium enter the gas-liquid two-phase state, the temperature difference between itself and the atmosphere further reduces, medium temperature is greatly improved, can not form freezing of heat exchange fin tube-surface, so in the end four 5 of row's heat-exchange finned tubes adopt normal closeer finned tube longitudinal pitch C, four row's heat-exchange finned tubes 5 are 12 fins, to guarantee between heat-exchange finned tube and the atmosphere big heat exchange area being arranged, to guarantee to reach the heat exchange amount of design.

Claims

1, a kind of not-easy-to-freeze air-bathing gasifier, it comprises feed tube, fin heat exchange pipe, escape pipe, it is characterized in that: described fin heat exchange pipe is that the multistage fin heat exchange pipe connects conducting by tube connector, along the flow direction of liquid medium, the descending variation of the spacing between the fin heat exchange pipe.

2, according to the described a kind of not-easy-to-freeze air-bathing gasifier of claim 1, it is characterized in that: described fin heat exchange pipe is that the different heat exchange pipeline section of multistage number of fins is formed.

3, according to the described a kind of not-easy-to-freeze air-bathing gasifier of claim 2, it is characterized in that: along the flow direction of liquid medium, the fin number of described fin heat exchange pipe from less to more.

4, according to the described a kind of not-easy-to-freeze air-bathing gasifier of claim 3, it is characterized in that: described fin heat exchange pipe section comprises the heat exchange pipeline section with 4 fins, be connected with described feed tube after the input parallel connection of described heat exchange pipeline section with 4 fins, every with the heat exchange pipeline section of 4 fins respectively by being linked in sequence communicating pipe with the heat exchange pipeline section of 8 fins with the heat exchange pipeline section of 12 fins.