CN202113622U

CN202113622U - High-efficiency self-circulation evaporator

Info

Publication number: CN202113622U
Application number: CN2011201455735U
Authority: CN
Inventors: 吕进归
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-09
Filing date: 2011-05-09
Publication date: 2012-01-18
Anticipated expiration: 2021-05-09

Abstract

The utility model discloses a high-efficiency self-circulation evaporator, which comprises a lower pipe box, a pipe shell, an upper pipe box, heat exchange pipes, a central circulation pipe, an upper pipe plate and a lower pipe plate, wherein the upper mouth and the lower mouth of the pipe shell are respectively and fixedly connected with the upper pipe plate and the lower pipe plate; the upper pipe plate is connected with the lower mouth of the upper pipe box in a sealing way; the lower pipe plate is connected with the upper mouth of the lower pipe box in a sealing way; the lower pipe box is provided with a liquid inlet; the upper pipe box is provided with an air exhaust; the pipe shell is provided with a heating medium inlet and a heating medium outlet; a plurality of heat exchange pipes penetrate between the upper pipe plate and the lower pipe plate and are matched in a sealing way; the middle parts of the upper pipe plate and the lower pipe plate are hollow, the hollow part of the upper pipe plate and the hollow part of the lower pipe plate are respectively and fixedly matched with the upper end and the lower end of the central circulation pipe in a sealing way, and the upper port and the lower port of each of the heat exchange pipes as well as the upper mouth and the lower mouth of the central circulation pipe are respectively communicated with the interior of the upper pipe box and the interior of the lower pipe box; and a partition sleeve is arranged in the central circulation pipe, and the upper mouth and the lower mouth of the partition sleeve are respectively communicated with the interior of the upper pipe box and the interior of the lower pipe box. The high-efficiency self-circulation evaporator has good heat transfer effect.

Description

Efficient self-loopa evaporimeter

Technical field

The utility model relates to a kind of efficient self-loopa evaporimeter of high circulation rate.

Background technology

The self-loopa evaporimeter is used for concentrating of evaporation of liquid and solution; It comprises tank body and is laid in interior heat exchanger tube of tank body and central circulating tube etc.; After liquid gets into tank interior; Get into heat exchanger tube subsequently and heat (heat exchanger tube feeds heat medium outward), in this process, partially liq changes into gas.Through constantly adding liquid; Make tank interior keep same liquid level line; When the liquid that contains gas flow out in the process of heat exchanger tube with central circulating tube in liquid formed density contrast; Make the big liquid of density past dirty, get into heat exchanger tube subsequently again and heat, so circulation through central circulating tube.The self-loopa of its liquid realizes by density contrast.And discharge from tank body top by the gas that liquid changes into.Also there is defective in existing self-loopa evaporimeter: because the effect of heat medium; With central circulating tube inner surface contact liq (defluent liquid) owing to receive the heating of central circulating tube inner surface also can produce boiling gas (bubble); And gas (bubble) can be to come-up; Thereby hindered the past current downflow of liquid in the central circulating tube, slowed down the circulation rate of whole liquid, caused the heat-transfer effect of evaporimeter not good.

Summary of the invention

The utility model discloses a kind of efficient self-loopa evaporimeter of high circulation rate.

The utility model is taked following technical scheme: efficient self-loopa evaporimeter; Comprise lower tube box, shell, upper tube box, heat exchanger tube, central circulating tube, upper perforated plate, lower perforated plate, the upper and lower opening of shell is fixedly connected with upper perforated plate, lower perforated plate respectively, and the end opening of upper perforated plate and upper tube box is tightly connected; The suitable for reading of lower perforated plate and lower tube box is tightly connected; Lower tube box is offered liquid-inlet, and upper tube box is offered exhaust outlet, and shell is offered heat medium import and outlet; Several heat exchanger tubes stretch through and are sealed and matched between upper perforated plate, lower perforated plate; The middle part hollow out of upper perforated plate, lower perforated plate, the upper and lower side of the affixed respectively and central circulating tube that is sealed and matched of both hollow-out parts, the upper and lower port of heat exchanger tube, the upper and lower opening of central circulating tube all respectively with the internal run-through of upper tube box, lower tube box; Central circulating tube inside is inserted one and is separated sleeve pipe, this upper and lower opening of separating sleeve pipe respectively with the internal run-through of upper tube box, lower tube box.

Described efficient self-loopa evaporimeter is separated the top of sleeve pipe and is stretched out outside the central circulating tube circular cone shelly that this top is big up and small down; The bottom of separating sleeve pipe is cylindric, and the external diameter of this bottom leaves the gap less than the internal diameter of central circulating tube between the outer wall of this bottom and the inwall of central circulating tube.

Described efficient self-loopa evaporimeter divides the bottom of spacer to connect central circulating tube through screw or contiguous block.

Described efficient self-loopa evaporimeter, the outer wall of shell set firmly the bearing that usefulness is installed.

Described efficient self-loopa evaporimeter, shell forms the raised type expansion joint.

Described efficient self-loopa evaporimeter, the bottom of lower tube box offers slag-drip opening.

In the technical scheme of the utility model, central circulating tube and defluent liquid are passed through to separate case off, thereby defluent liquid just can not produce gas (bubble), compared with prior art, it improves the circulation rate of liquid.Because the circulation rate of liquid is high, the heat transfer coefficient of heat exchanger tube is increased, the heat-transfer effect of evaporimeter is good, can reduce the heat-transfer area of heat exchanger tube, has saved manufacturing cost; In addition, improved the circulation rate of liquid after, the incrustation of heat exchanger tube also can reduce.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

As shown in Figure 1, evaporimeter is the vertical column structure of sealing, comprises lower tube box 1, shell 3, upper tube box 7; The upper and lower opening of shell 3 welds with upper perforated plate 12, lower perforated plate 2 respectively; Upper perforated plate 12 is tightly connected with the end opening of upper tube box 7, lower perforated plate 2 is tightly connected with the suitable for reading of lower tube box 1, has constituted an airtight tube side space; The bottom of lower tube box 1 offers slag-drip opening 1-1, and the side offers liquid-inlet 1-2.The top of upper tube box 7 offers exhaust outlet 7-1.

12,2 of last lower perforated plates stretch through and are fixedly connected several heat exchanger tubes 4; 12,2 of heat exchanger tube 4 and last lower perforated plates all adopt welding or rise to connect and be sealed and matched; Heat exchanger tube 4 is parallel to each other and lays along the short transverse of evaporimeter, the upper and lower port of each root heat exchanger tube 4 respectively with the internal run-through of upper tube box 7, lower tube box 1.

The middle part hollow out of last lower perforated plate 12,2, both hollow-out parts is the two ends up and down of affixed central circulating tube 5 respectively, central circulating tube 5 is cylindric, itself and heat exchanger tube 4 parallel, the upper and lower opening of central circulating tube 5 respectively with the internal run-through of upper tube box 7, lower tube box 1.

Heat exchanger tube 4, central circulating tube 5 weld or rise with upper and lower tube sheet and connect the shell side space that has formed evaporimeter.

Heat medium (like steam) import 3-1 is offered on the top of shell 3; The middle and upper part outer wall sets firmly the bearing 3-2 that usefulness is installed; There is raised type expansion joint 3-3 the middle and lower part, and to reduce thermal stress, the bottom is offered heat medium outlet 3-4 and (adopted steam like heat medium; Then behind heat transfer process, generally change into condensed water and from then on export outside the discharge evaporimeter).

Central circulating tube 5 inside are inserted and are separated sleeve pipe 6, and the top 6-1 that separates sleeve pipe 6 stretches out outside the central circulating tube 5 the circular cone shelly that top 6-1 is big up and small down; The part 6-2 that its underpart is positioned at central circulating tube 5 promptly is cylindric; The external diameter of this one is less than the internal diameter of central circulating tube 5; Leave certain clearance between the inwall of the outer wall of bottom 6-2 and central circulating tube 5, and its underpart 6-2 can be connected on the central circulating tube 5 through several screws or contiguous block 11.The internal run-through of separating the suitable for reading and upper tube box 7 of sleeve pipe 6, the internal run-through of end opening and lower tube box 1.In working order down, separating the suitable for reading of sleeve pipe 6 is under the liquid level line 13.

The liquid that needs to concentrate constantly gets in the evaporimeter from the liquid-inlet 1-2 of lower tube box 1, and to keep the liquid level line 13 in the evaporimeter constant, this liquid flows from lower tube box 1 entering heat exchanger tube 4 and upper tube box 7 directions to top then.And heat medium gets into from the heat medium import 3-1 of shell 3, and the liquid in the exchange heat pipe 4 heat, in this process; Partially liq changes into steam; Steam drives liquid through density contrast and upwards flows, and behind entering upper tube box 7 inside, steam is discharged from the outlet 7-1 at its top; Heat exchanger tube 4 includes in liquid and the central circulating tube 5 of bubble and does not contain the liquid of bubble owing to there is density contrast; It flows into lower tube box 1 under automatically in the central circulating tube 5 under the effect of gravity, along the heat exchanger tube 4 and the upper reaches, annular gap of separating

sleeve pipe

6 and 5 of central circulating tubes, it is mobile to form continuous Natural Circulation then.

Since central circulating tube 5 with separate toward being separated sleeve pipe 6 between dirty liquid, thereby it can be to producing heat effect toward dirty liquid, just can not produce gas (bubble) herein and obstruction liquid is past dirty.Compared with prior art, it has accelerated liquid toward dirty speed, thereby has improved the speed of whole liquid circulation, has reduced the fouling of heat exchanger tube 4, has strengthened the heat-transfer effect of evaporimeter simultaneously.

Those of ordinary skill in the art should be familiar with; An above-mentioned just preferred embodiment of the utility model; It is not the qualification to the utility model, and is all in the scope of the utility model, to the variation of above embodiment, the protection domain that modification all will fall into the utility model.

Claims

1. efficient self-loopa evaporimeter; Comprise lower tube box, shell, upper tube box, heat exchanger tube, central circulating tube, upper perforated plate, lower perforated plate, the upper and lower opening of shell is fixedly connected with upper perforated plate, lower perforated plate respectively, and the end opening of upper perforated plate and upper tube box is tightly connected; The suitable for reading of lower perforated plate and lower tube box is tightly connected; Lower tube box is offered liquid-inlet, and upper tube box is offered exhaust outlet, and shell is offered heat medium import and outlet; Several heat exchanger tubes stretch through and are sealed and matched between upper perforated plate, lower perforated plate; The middle part hollow out of upper perforated plate, lower perforated plate, the upper and lower side of the affixed respectively and central circulating tube that is sealed and matched of both hollow-out parts, the upper and lower port of heat exchanger tube, the upper and lower opening of central circulating tube all respectively with the internal run-through of upper tube box, lower tube box; It is characterized in that: central circulating tube inside is inserted one and is separated sleeve pipe, this upper and lower opening of separating sleeve pipe respectively with the internal run-through of upper tube box, lower tube box.

2. efficient self-loopa evaporimeter as claimed in claim 1, it is characterized in that: stretch out outside the central circulating tube on the top of said separation sleeve pipe, the circular cone shelly that this top is big up and small down; The bottom of separating sleeve pipe is cylindric, and the external diameter of this bottom leaves the gap less than the internal diameter of central circulating tube between the outer wall of this bottom and the inwall of central circulating tube.

3. efficient self-loopa evaporimeter as claimed in claim 2 is characterized in that: the bottom of said minute spacer connects central circulating tube through screw or contiguous block.

4. efficient self-loopa evaporimeter as claimed in claim 1 is characterized in that: the outer wall of said shell sets firmly the bearing that usefulness is installed.

5. like claim 1 or 4 described efficient self-loopa evaporimeters, it is characterized in that: described shell forms the raised type expansion joint.

6. efficient self-loopa evaporimeter as claimed in claim 1, it is characterized in that: the bottom of said lower tube box offers slag-drip opening.