CN220230159U - Tubular heat exchanger and evaporative condenser - Google Patents

Abstract

The utility model discloses a tubular heat exchanger and an evaporative condenser, which comprises a plurality of heat exchange tubes distributed in a rectangular array, wherein each row of heat exchange tubes is divided into an upper condensation area and a lower condensation area, the left ends of the heat exchange tubes of the upper condensation area and the lower condensation area are communicated through a second distribution pipe, the right ends of the heat exchange tubes of the upper condensation area are communicated through a first distribution pipe, and the right ends of the heat exchange tubes of the lower condensation area are communicated through a collecting pipe. After the high-temperature high-pressure gas conveyed by the air inlet header pipe enters the heat exchanger, gas-liquid distribution is automatically carried out according to density difference in the first distribution pipe and the second distribution pipe in sequence, then the gas-liquid distribution pipe enters the heat exchange pipes of different sheets, and the gas-liquid heat exchange pipes are in contact with a low-temperature source to carry out heat exchange, so that the high-temperature high-pressure gas is condensed, a plurality of distribution pipes are arranged to help to increase the circulation times of pipelines, promote gas circulation and improve condensation efficiency.

Description

Tubular heat exchanger and evaporative condenser

Technical Field

The utility model relates to a tubular heat exchanger, and also relates to an evaporative condenser, belonging to the technical field of condensing devices.

Background

The heat exchanger has coiled heat exchanger and spray type heat exchanger, and coiled heat exchanger's heat exchange tube is the heliciform, in limited space, increases the length of heat exchange tube as far as possible, simple structure, but the inside turbulent flow degree of pipeline is low, and refrigerant just flows along the pipeline direction all the time after getting into from the intake pipe, is once circulated from admitting air to play liquid, and circulation degree is low. The spray type heat exchanger is characterized in that heat exchange pipes are fixed on a steel frame in a row, hot fluid flows in the pipes, cooling water is uniformly sprayed from a spray device above, heat is taken away by evaporating part of water, and refrigerant of the spray type heat exchanger enters a collecting pipe and then enters a branch pipe for condensation and cooling, so that compared with a coil type heat exchanger, the heat exchange efficiency of the spray type heat exchanger is higher, but the circulation degree of the spray type heat exchanger in the prior art is also smaller.

Disclosure of Invention

The utility model aims to: the utility model aims to provide a tubular heat exchanger capable of increasing the circulation times of high-temperature fluid so as to promote circulation; it is another object of the present utility model to provide an evaporative condenser capable of promoting circulation.

The technical scheme is as follows: the utility model relates to a tubular heat exchanger for promoting circulation, which comprises a plurality of heat exchange tubes distributed in a rectangular array, and is characterized in that each row of heat exchange tubes is divided into an upper condensation area and a lower condensation area, the left ends of the heat exchange tubes of the upper condensation area and the lower condensation area are communicated through a second distribution tube, the right ends of the heat exchange tubes of the upper condensation area are communicated through a first distribution tube, and the right ends of the heat exchange tubes of the lower condensation area are communicated through a collecting tube.

Preferably, in order to facilitate the processing of the whole device, the first distributing pipe, the second distributing pipe and the collecting pipe are square pipes and are vertically arranged.

Preferably, an air inlet branch pipe is arranged on one side of the first distributing pipe far away from the upper condensation area.

Preferably, a liquid outlet branch pipe is arranged on one side of the collecting pipe far away from the lower condensation area.

The evaporative condenser is characterized by comprising the tubular heat exchanger.

Preferably, in order to cooperate with the high-temperature steam to accelerate heat exchange, a spray pipe assembly for spraying cooling water on the heat exchange pipe is arranged above the heat exchanger.

Preferably, a water collecting tray for collecting cooling water is arranged below the heat exchanger, and the non-evaporated cooling water is collected, so that resources are saved.

The beneficial effects are that: compared with the prior art, the utility model has the following advantages: 1. the circulation times are increased, and circulation is promoted; 2. the utilization rate of cooling water is improved, and heat exchange is enhanced; 3. the structure is simple, and the processing is easy; 4. low cost and durability.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a front view of the structure of fig. 1.

Fig. 3 is a top view of the structure of fig. 1.

FIG. 4 is a schematic view of the present utility model in use.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings.

As shown in the figure, the utility model discloses a tubular heat exchanger 4 capable of efficiently promoting circulation, the tubular heat exchanger 4 mainly comprises a plurality of heat exchange tubes 5 distributed in a rectangular array, the heat exchange tubes 5 are mutually parallel in the length direction, each row of heat exchange tubes 5 is divided into an upper condensing area 9 and a lower condensing area 11 in the vertical direction, the left ends of the condensing tubes of the upper condensing area 9 and the lower condensing area 11 are provided with a second distributing tube 10 which is vertically arranged, the left end of the tube body of each row of heat exchange tubes 5 enters the interior of the tube body of the second distributing tube 10 and is communicated with the tube body, the upper end and the lower end of the second distributing tube 10 are in a closed state, the right ends of the heat exchange tubes of the upper condensing area 9 and the lower condensing area 11 are respectively provided with a first distributing tube 8 and a collecting tube 12 which are vertically arranged, the right end of the heat exchange tube of the upper condensation area 9 enters the interior of the tube body of the first distributing tube 8 and is communicated with the interior of the tube body, the right end of the heat exchange tube of the lower condensation area 11 is communicated with the collecting tube 12, the upper end and the lower end of the collecting tube 12 are in a closed state, the first distributing tube 8 and the collecting tube 12 are square tubes and are arranged in parallel, two adjacent first distributing tubes 8, two adjacent second distributing tubes 10 and two adjacent outer walls of the collecting tube 12 are not communicated, an air inlet branch tube 7 is connected to the first distributing tube 8, a plurality of air inlet branch tubes 7 are communicated with the air inlet manifold 6, a liquid outlet branch tube 13 is arranged at the bottom of the collecting tube 12 and is communicated with the liquid outlet manifold 14, and each tube of the tube type heat exchanger is made of stainless steel.

The evaporative condenser mainly comprises a tubular heat exchanger and a spray pipe assembly 17, the spray pipe assembly 17 is arranged on the upper portion of the tubular heat exchanger, a fan 18 is further arranged at the top of the evaporative condenser, a water collecting disc is arranged at the bottom of the evaporative condenser, water is sprayed onto the heat exchanger to absorb heat, a part of the water is converted into water vapor, heat is taken away, the water vapor is pumped into a unit by the fan 18, the fan 18 promotes air flow to strengthen heat exchange, heat of a refrigerant is helped to be taken away rapidly, and non-evaporated water falls into the bottom water collecting disc 1 and is recycled or reused.

When the high-temperature high-pressure refrigerant gas enters from the air inlet header pipe 6, layering is carried out in the air inlet header pipe 6, then the high-temperature high-pressure refrigerant gas is split into each air inlet branch pipe 7 and then enters the first distribution pipe 8, the high-temperature high-pressure refrigerant gas is subjected to primary gas-liquid distribution in the first distribution pipe 8, and the high-temperature high-pressure refrigerant gas enters heat exchange pipes of different layers of the upper condensation area 9 according to the density. Spray water enters from a spray water inlet header pipe 15, is split by a spray pipe 16 and enters into an upper spray pipe assembly 17, and is uniformly sprayed on the stainless steel heat exchange pipe through a spray head in the spray pipe assembly to absorb heat by evaporation, so that heat of high-temperature and high-pressure refrigerant vapor from a compressor is taken away, and the high-temperature and high-pressure refrigerant vapor in the heat exchange pipe is cooled. The refrigerant with high temperature has small density and has rising trend, and enters the upper heat exchange tube, and is closer to the cooling water in the spray tube assembly 17, thereby being beneficial to rapid heat dissipation. The refrigerant enters the second distribution pipe 10 after primary cooling, secondary gas-liquid distribution is carried out in the second distribution pipe 10, and the gas-liquid mixture with high temperature and low density enters the upper layer heat exchange pipe of the lower condensation zone 11, the refrigerant in the heat exchange pipe is contacted with spray water outside the heat exchange pipe again, heat is removed by the cooling water, the refrigerant after secondary cooling enters the collecting pipe 12, and is collected to the liquid outlet main pipe 14 through the liquid outlet branch pipe 13 and flows out of the heat exchanger. The respective refrigerants flowing through the air inlet header pipe 6 and the liquid outlet header pipe 14 are circulated separately, so that the number of times of internal circulation of the heat exchange tube is increased.

Claims (7)

1. The utility model provides a tubular heat exchanger, includes a plurality of heat exchange tubes (5) that are rectangular array and distribute, its characterized in that, every row the heat exchange tube divide into condensation zone (9) and lower condensation zone (11), the heat exchange tube left end of going up condensation zone and lower condensation zone communicates through second distribution pipe (10), the heat exchange tube right-hand member of going up condensation zone (9) communicates through first distribution pipe (8), the heat exchange tube right-hand member of lower condensation zone (11) communicates through collecting main (12).

2. A tubular heat exchanger according to claim 1 wherein the first distribution pipe, the second distribution pipe and the header are square pipes and are vertically disposed.

3. A tubular heat exchanger according to claim 1, wherein the side of the first distribution pipe remote from the upper condensation zone is provided with an inlet manifold (7).

4. A tubular heat exchanger according to claim 1, characterized in that the side of the header remote from the lower condensation zone is provided with a liquid outlet branch (13).

5. An evaporative condenser comprising a tubular heat exchanger as recited in claim 1.

6. An evaporative condenser according to claim 5, wherein a spray tube assembly (17) for spraying cooling water onto the heat exchange tubes is provided above the heat exchanger.

7. An evaporative condenser according to claim 6, characterized in that a water collection tray (1) is provided below the heat exchanger to collect cooling water.