CN217155111U - Semi-volume heat exchanger - Google Patents

Abstract

The utility model provides a half positive displacement heat exchanger, including the heat transfer jar body and tube heater, tube heater part inserts to install in the heat transfer jar internally, can be to the internal liquid heat transfer of heat transfer jar, and tube heater includes casing, a plurality of heat exchange tube bundles, cold water inlet and hot water downcomer, and heat exchange tube bundles set up in the casing, and the hot water downcomer communicates the casing and the heat transfer jar body, and the body of hot water downcomer extends to heat transfer jar body bottom, and the drain that the body of hot water downcomer and heat transfer jar body bottom were equipped with closes on mutually. The utility model discloses a half positive displacement heat exchanger simple structure, low in production cost, it is long when can shortening the hot and cold water mixture, the internal hot and cold water temperature of even heat transfer jar improves heat exchange efficiency.

Description

Semi-volume heat exchanger

Technical Field

The utility model belongs to the technical field of the heat exchanger, especially, relate to a half-capacity heat exchanger.

Background

The built-in heater of the semi-volume heat exchanger has the main principle that the flow velocity of a heat medium in a pipe and heated water outside the pipe is increased, laminar flow is changed into turbulent flow for heat exchange, the heat exchange effect of a heat exchange pipe is fully exerted, and the short circuit phenomenon of the heated water is eliminated. The semi-positive displacement heat exchanger separates the heat exchange part and the heat storage part completely, thus not only improving the heat exchange effect, but also eliminating the cold/stagnant water area. However, for a large-sized semi-volume heat exchanger, due to the fact that the diameter of the storage tank is too large, under the condition that the diameter of the hot water descending pipe is fixed, cold water and hot water are mixed slowly, the temperature of the cold water and the hot water in the heat exchange tank body is uneven, and the heat supply speed is affected.

SUMMERY OF THE UTILITY MODEL

In view of the problem that exists among the above-mentioned prior art, the utility model discloses a main aim at provides a half positive displacement heat exchanger, and the half positive displacement heat exchanger simple structure that provides, manufacturing cost is little, and is long when can shorten the hot and cold water mixture, and the internal hot and cold water temperature of even heat transfer jar improves heat exchange efficiency.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a semi-positive displacement heat exchanger, which comprises a heat exchange tank body and a tube heater, wherein the tube heater is partially inserted and installed in the heat exchange tank body and can exchange heat for liquid in the heat exchange tank body;

the shell-and-tube heater comprises a shell, a plurality of heat exchange tube bundles, a cold water inlet and a hot water downcomer, wherein the heat exchange tube bundles are arranged in the shell;

the hot water descending pipe is communicated with the shell and the heat exchange tank body;

the pipe body of the hot water downcomer extends to the bottom of the heat exchange tank body;

and the body of the hot water downcomer is close to a sewage draining outlet arranged at the bottom of the heat exchange tank body.

As a further description of the above technical solution, a plurality of openings are uniformly formed on the tube body of the hot water downcomer.

As a further description of the above technical solution, the hot water downcomer is located inside the heat exchange tank, and the cold water inlet is located outside the heat exchange tank.

As a further description of the above technical solution, the cold water inlet is provided at the bottom of the housing.

As a further description of the above technical solution, the tube-in-tube heater further includes a heat medium circulating device, and the heat medium circulating device is communicated with the plurality of heat exchange tube bundles;

the heat medium circulation device comprises a heat medium inlet and a heat medium outlet, and the heat medium inlet is communicated with the heat medium input device.

As a further description of the above technical solution, the heat medium inlet and the heat medium outlet are both located outside the heat exchange tank body.

As a further description of the above technical solution, the heating medium inlet is located at the top of the shell, and the heating medium outlet is located at the bottom of the shell.

As a further description of the above solution, the shell and the hot water downcomer are made of the same material.

As a further description of the above technical solution, a water outlet is provided on the heat exchange tank body, and the water outlet is provided at the top of the heat exchange tank body.

As a further description of the above technical solution, the heat exchange tank body is further provided with a safety valve interface, a thermometer port, a pressure gauge port, a bulb interface and a manhole;

the positions of the thermometer port, the pressure gauge port and the thermometer bulb interface are higher than the pipe shell heater;

the safety valve interface is arranged at the top of the heat exchange tank body;

the manhole is arranged in the middle of the heat exchange tank body.

The utility model discloses an outstanding effect does:

the utility model discloses a half positive displacement heat exchanger prolongs the hot water downcomer to heat transfer tank body bottom downwards, and closes on mutually with the drain that heat transfer tank body bottom was equipped with, evenly is provided with a plurality of trompils on it, and cold water flows out by the opening on the hot water downcomer after the shell heater heating, has realized the dispersed with the internal cold water homogeneous mixing of heat transfer tank.

The utility model discloses a half positive displacement heat exchanger simple structure, low in production cost under the certain circumstances of hot water downcomer pipe diameter, it is long when having shortened the hot water's of cold mixture in the heat transfer jar body, has improved heat exchange efficiency.

Drawings

Fig. 1 is a schematic structural view of a semi-positive displacement heat exchanger of the present invention;

fig. 2 is a top view of a hot water down pipe in the semi-positive displacement heat exchanger of the present invention.

The reference numbers indicate:

1-a heat exchange tank body; 11-a sewage draining outlet; 12-a water outlet; 13-safety valve interface; 14-thermometer port; 15-a bulb interface; 16-manhole; 21-a housing; 22-a heat exchange tube bundle; 23-a cold water inlet; 24-a hot water down pipe; 241-opening holes; 25-a heating medium outlet; 26-heating medium inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or component to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention with reference to the overall structure thereof.

Referring to fig. 1 to 2, an embodiment of the present invention discloses a semi-positive displacement heat exchanger, which includes a heat exchange tank 1 and a shell-and-tube heater, wherein the shell-and-tube heater is partially inserted into the heat exchange tank 1, and can exchange heat with liquid in the heat exchange tank 1;

the shell-and-tube heater comprises a shell 21, a plurality of heat exchange tube bundles 22, a cold water inlet 23 and a hot water downcomer 24, wherein the heat exchange tube bundles 22 are arranged in the shell 21;

the hot water descending pipe 24 is communicated with the shell 21 and the heat exchange tank body 1;

the body of the hot water downcomer 24 extends to the bottom of the heat exchange tank body 1;

the body of the hot water downcomer 24 is close to the sewage outlet 11 arranged at the bottom of the heat exchange tank body 1.

In the above arrangement, the tube-in-tube heater is partially inserted into the heat exchange tank 1, and cold water enters the shell 21 of the tube-in-tube heater through the cold water inlet 23, and after being heated to hot water at a preset temperature by the heat exchange tube bundle 22, the hot water flows into the heat exchange tank 1 through the hot water descending pipe 24 communicating the shell 21 and the heat exchange tank 1, and is mixed with the cold water in the heat exchange tank 1, so as to achieve the purpose of heat exchange. The pipe body of the hot water descending pipe 24 extends to the bottom of the heat exchange tank body 1 and is close to the sewage discharge outlet 11 arranged at the bottom of the heat exchange tank body 1, the hot water is naturally circulated with the cold water in the heat exchange tank body 1 at the moment of flowing out from the pipe body of the hot water descending pipe 24, so that the quick and uniform mixing is realized, the mixing time of the cold water and the hot water in the heat exchange tank body 1 is shortened, the heat exchange efficiency is improved, and the sewage outlet is arranged at the bottom of the heat exchange tank body 1, so that the sewage in the heat exchange tank body 1 can be conveniently discharged after being isolated by the sewage separation device.

Specifically, in this embodiment, the pipe body of the hot water downcomer 24 extends to the bottom of the heat exchange tank body 1, and after the pipe body is partially bent, the pipe body is made to be in a horizontal state with the pipe body part close to the sewage outlet 11 arranged at the bottom of the heat exchange tank body 1, as shown in fig. 2, the opening 241 is uniformly formed in the horizontal pipe body of the hot water downcomer 24, so that the hot water in the hot water downcomer 24 can dispersedly flow into the heat exchange tank body 1 and is rapidly mixed with the cold water in the heat exchange tank body 1, and the phenomenon of uneven mixing of the hot water and the cold water is avoided. The opening 241 can be drilled, so that the opening 241 can be smooth, the number of the openings 241 can be set according to actual heat exchange requirements, and the total area of the openings 241 can enable hot water in the shell 21 to flow out normally. Of course, in other embodiments, the portion of the pipe body extending from the hot water descending pipe 24 to the bottom of the heat exchange tank 1 may be in other states, such as a U shape, and the opening 241 is uniformly formed thereon, so that the hot water in the shell 21 can be rapidly and uniformly mixed with the cold water in the heat exchange tank 1 after passing through the hot water descending pipe 24.

Specifically, referring to fig. 1, in this embodiment, the hot water downcomer 24 is located inside the heat exchange tank 1, and communicates the heat exchange tank 1 with the shell 21, and extends to the bottom of the heat exchange tank 1, so that the hot water in the shell 21 flows into the heat exchange tank 1 under the action of gravity to be rapidly and uniformly mixed with the cold water in the heat exchange tank 1. The cold water inlet 23 is located outside the heat exchange tank 1 and is arranged at the bottom of the left side of the shell 21, so that cold water can enter the shell 21.

Referring to fig. 1 to 2, in particular, in the present embodiment, the shell-and-tube heater further includes a heat medium circulating device, the heat medium circulating device includes a heat medium inlet 26 and a heat medium outlet 25, and after entering the heat medium circulating device through the heat medium inlet 26, the heat medium flows through the heat exchange tube bundles 22 communicated with the heat medium circulating device, and then flows out of the heat medium circulating device through the heat medium outlet 25. Wherein, the heating medium inlet 26 and the heating medium outlet 25 are both located outside the heat exchange tank body 1, the heating medium inlet 26 is located at the top of the shell 21, and the heating medium outlet 25 is located at the bottom of the shell 21 so as to provide the circulation of the heating medium.

Specifically, the shell 21 and the hot water down pipe 24 are made of the same material, for example, in this embodiment, the shell 21 and the hot water down pipe 24 are made of stainless steel. Of course, in other embodiments, other materials may be used.

Specifically, in this embodiment, the heat exchange tank body 1 is provided with a water outlet 12, and the water outlet 12 is arranged at the top of the heat exchange tank body 1 to allow hot water after heat exchange in the heat exchange tank body 1 to flow out.

Specifically, in this embodiment, a safety valve interface 13, a temperature gauge port 14, a pressure gauge port, a temperature bulb interface 15 and a manhole 16 are further arranged on the heat exchange tank body 1, the safety valve interface 13 is arranged at the top of the heat exchange tank body 1 and used for accessing a safety valve, the temperature gauge port 14, the pressure gauge port and the temperature bulb interface 15 are all higher than the tube shell heater and arranged close to the top of the heat exchange tank body 1, the temperature gauge port 14 is used for accessing a temperature gauge, the pressure gauge port is used for accessing a pressure gauge, and the temperature bulb interface 15 is used for accessing a temperature bulb, so that the control of the temperature and the pressure inside the heat exchange tank body 1 can be better achieved. The manhole 16 is arranged in the middle of the heat exchange tank body 1 so that people can enter and exit the equipment to perform installation, maintenance, safety inspection and other operations.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or some features may be substituted by other modifications, equivalents, improvements, and the like without departing from the spirit and scope of the invention.

Claims (10)

1. A semi-positive displacement heat exchanger is characterized by comprising a heat exchange tank body and a tube-shell heater, wherein the tube-shell heater is partially inserted and installed in the heat exchange tank body and can exchange heat with liquid in the heat exchange tank body;

the shell-and-tube heater comprises a shell, a plurality of heat exchange tube bundles, a cold water inlet and a hot water downcomer, wherein the heat exchange tube bundles are arranged in the shell;

the hot water descending pipe is communicated with the shell and the heat exchange tank body;

the pipe body of the hot water downcomer extends to the bottom of the heat exchange tank body;

and the body of the hot water downcomer is adjacent to a sewage draining outlet arranged at the bottom of the heat exchange tank body.

2. The heat exchanger of claim 1, wherein the hot water downcomers have a plurality of openings formed therein.

3. The semi-positive displacement heat exchanger of claim 2, wherein the hot water downcomer is located inside the heat exchange tank and the cold water inlet is located outside the heat exchange tank.

4. The half-volume heat exchanger of claim 3, wherein the cold water inlet is disposed at a bottom of the housing.

5. The semi-positive displacement heat exchanger of claim 1, wherein the shell and tube heater further comprises a thermal medium circulation device, the thermal medium circulation device being in communication with the plurality of heat exchanger tube bundles;

the heat medium circulation device comprises a heat medium inlet and a heat medium outlet, and the heat medium inlet is communicated with the heat medium input device.

6. The semi-positive displacement heat exchanger of claim 5, wherein the heating medium inlet and the heating medium outlet are both located outside the heat exchange tank.

7. The semi-positive displacement heat exchanger of claim 6, wherein the heating medium inlet is located at the top of the shell and the heating medium outlet is located at the bottom of the shell.

8. The half-volume heat exchanger according to claim 1, wherein the shell and the hot water downcomer are made of the same material.

9. The half-volume heat exchanger of claim 1, wherein the heat exchange tank is provided with a water outlet disposed at a top of the heat exchange tank.

10. The half-volume heat exchanger of any one of claims 1 to 9, wherein the heat exchange tank body is further provided with a safety valve port, a temperature gauge port, a pressure gauge port, a bulb port and a manhole;

the positions of the thermometer port, the pressure gauge port and the thermometer bulb interface are all higher than the pipe shell heater;

the safety valve interface is arranged at the top of the heat exchange tank body;

the manhole is arranged in the middle of the heat exchange tank body.

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