CN220288307U

CN220288307U - Vertical heat exchanger

Info

Publication number: CN220288307U
Application number: CN202321848413.6U
Authority: CN
Inventors: 孙嘉玉; 刘进一; 王春涛
Original assignee: Hainan University
Current assignee: Hainan University
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2024-01-02
Anticipated expiration: 2033-07-14

Abstract

The utility model relates to the field of nuclear power heat exchange, in particular to a vertical heat exchanger, which comprises a cooling pipe; a cooling liquid inlet pipe and a cooling liquid outlet pipe which are respectively arranged at the lower edge of the outer wall of the cooling pipe and the upper edge of the outer wall; the inclined baffle plate is arranged inside the cooling pipe; end covers respectively arranged at the upper port and the lower port of the cooling pipe; the heat exchange tube is arranged in the cooling tube and is communicated with the end cover; the cooling liquid inlet pipe and the cooling liquid outlet pipe are respectively used for injecting and discharging cooling liquid into and from the cooling pipe; the end cover of the upper port is used for injecting the liquid to be cooled into the heat exchange tube; the end cover of the lower port is used for flowing the cooling liquid passing through the heat exchange tube out of the heat exchanger, so that the vertical heat exchanger is a composite shell-and-tube heat exchanger and can exchange heat between the cooling liquid in the cooling tube and the cooling liquid to be cooled in the heat exchange tube.

Description

Vertical heat exchanger

Technical Field

The utility model relates to the field of nuclear power heat exchange, in particular to a vertical heat exchanger.

Background

In the application of the nuclear power station, when the reactor is subjected to faults such as power failure, rapid reaction and the like, the power and the heat generated by the reactor are too large, the residual power and the heat cannot disappear immediately, and a heat exchanger is needed to cool high-temperature water generated by the reactor at the moment so as to timely and efficiently lead out the heat generated by the reactor, otherwise, serious environmental pollution, even serious economic loss and personal injury can be caused due to a series of serious accidents such as containment rupture and the like.

Therefore, how to provide a heat exchanger with good heat exchange effect is a technical problem to be solved in the field.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a vertical heat exchanger.

The utility model is realized in that the vertical heat exchanger is characterized by comprising a cooling pipe; a cooling liquid inlet pipe and a cooling liquid outlet pipe which are respectively arranged at the lower edge of the outer wall of the cooling pipe and the upper edge of the outer wall; the inclined baffle plate is arranged inside the cooling pipe; end covers respectively arranged at the upper port and the lower port of the cooling pipe; the heat exchange tube is arranged in the cooling tube and is communicated with the end cover; the cooling liquid inlet pipe and the cooling liquid outlet pipe are respectively used for injecting and discharging cooling liquid into and from the cooling pipe; the end cover of the upper port is used for injecting the liquid to be cooled into the heat exchange tube; and an end cover of the lower port is used for leading the cooled liquid flowing out of the heat exchange tube to be led out of the heat exchanger.

Optionally, a plurality of through holes are formed in the inclined baffle plate.

Optionally, the inclined baffle plate and the horizontal plane form an inclined angle beta of 35-45 degrees.

Optionally, the end cover includes a runner pipe at the top of the end cover, a baffle plate at the bottom of the end cover, and a plurality of heat exchange tube holes in the baffle plate.

Optionally, a sealing ring is arranged between the blocking plate and the inner wall of the end cover.

Optionally, the heat exchange tube has a corrugated shape continuously bent at an angle α.

Optionally, the angle α is 10 ° to 15 °.

Optionally, the outer surface of the heat exchange tube is provided with a plurality of heat exchange butyl cells.

Optionally, one end of the cooling pipe is provided with a stand for supporting the cooling pipe.

Optionally, the stand includes the stabilizer ring, is located the peripheral several hoisting blocks of stabilizer ring, is located the base pad at the hoisting block terminal and is located the circular slot of stabilizer ring upper edge.

The beneficial technical effects of implementing the utility model are as follows: before use, the cooling pipe is vertically fixed in a mode that the cooling liquid inlet pipe is positioned below and the cooling liquid outlet pipe is positioned above; when the cooling device is used, pressurized cooling liquid is injected into the cooling pipe from the cooling liquid inlet pipe along the track direction B, and finally discharged from the cooling liquid outlet pipe along with continuous injection of the cooling liquid, the cooling liquid injection procedure is finished, and the cooling liquid injection procedure is remarkable in that the inclined baffle plate is arranged in the cooling pipe in the injection process of the cooling liquid. And in the next procedure, after the cooling pipe is filled with flowing cooling liquid, the cooling liquid flows in from the end cover above along the direction A, then passes through the heat exchange pipe arranged in the cooling pipe, and can complete heat exchange between the cooling liquid flowing through the heat exchange pipe and the cooling liquid in the cooling pipe so as to realize cooling of the cooling liquid, and finally, the cooled liquid flows out of the heat exchanger through the end cover below the cooling pipe to complete heat exchange. In summary, the vertical heat exchanger of the utility model is a composite shell-and-tube heat exchanger, which can exchange heat between the cooling liquid in the cooling tube and the cooling liquid to be cooled in the heat exchange tube, and is used for high-temperature water heat exchange of a nuclear power station, so that heat generated by the reactor can be timely and efficiently led out, and environmental pollution, economic loss and casualties caused by a series of serious accidents such as rupture of the containment are avoided. It should be noted that the above application is only illustrative, but not limited to, the heat exchange tube of the present utility model can be applied to other fields to complete heat exchange.

Drawings

FIG. 1 is a schematic view of the installation of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a bellows of the present utility model;

FIG. 4 is an enlarged partial schematic view of a bellows of the present utility model;

FIG. 5 is a schematic view of an end cap of the present utility model;

fig. 6 is a schematic view of a stand according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed. In addition, if there are descriptions of "first, second", "S1, S2", "step one, step two", etc. in the embodiments of the present utility model, the descriptions are only for descriptive purposes, and are not to be construed as indicating or implying relative importance or implying that the number of technical features indicated or indicating the execution sequence of the method, etc. it will be understood by those skilled in the art that all matters in the technical concept of the present utility model are included in the scope of this utility model without departing from the gist of the present utility model.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1-6, the present utility model provides a vertical heat exchanger, optionally including, but not limited to, a cooling tube 1; a cooling liquid inlet pipe 101 and a cooling liquid outlet pipe 102 respectively arranged at the lower edge of the outer wall of the cooling pipe 1; an inclined baffle plate 103 disposed inside the cooling tube 1; end covers 2 respectively arranged at the upper and lower ports of the cooling pipe 1; and a heat exchange tube 3 provided inside the cooling tube 1 and communicating with the end cap 2;

a coolant inlet pipe 101 and a coolant outlet pipe 102 for injecting and discharging coolant to and from the cooling pipe 1, respectively;

an end cover 2 of the upper port for injecting the liquid to be cooled into the heat exchange tube 3; an end cap 2 at the lower port for flowing the cooled fluid through the heat exchange tube 3 out of the heat exchanger.

In this embodiment, a preferred embodiment of the vertical heat exchanger of the present utility model is given, and before use, the cooling tube 1 is fixed vertically with the cooling liquid inlet tube 101 positioned below and the cooling liquid outlet tube 102 positioned above; when the cooling device is used, pressurized cooling liquid is firstly injected into the cooling pipe 1 from the cooling liquid inlet pipe 101 along the track direction B, and finally discharged from the cooling liquid outlet pipe 102 along with continuous injection of the cooling liquid, the cooling liquid injection procedure is completed, and the cooling liquid injection procedure is remarkable. And in the next procedure, after the cooling pipe 1 is filled with flowing cooling liquid, the cooling liquid flows in from the end cover 2 above along the direction A, then passes through the heat exchange pipe 3 arranged in the cooling pipe 1, and can complete heat exchange between the cooling liquid flowing through the heat exchange pipe 3 and the cooling liquid in the cooling pipe 1 so as to realize cooling of the cooling liquid, and finally, the cooled liquid flows out of the heat exchanger through the end cover 2 below the cooling pipe 1 to complete heat exchange. In summary, the vertical heat exchanger of the utility model is a composite shell-and-tube heat exchanger, which can exchange heat between the cooling liquid in the cooling tube and the cooling liquid to be cooled in the heat exchange tube, and is used for high-temperature water heat exchange of a nuclear power station, so that heat generated by the reactor can be timely and efficiently led out, and environmental pollution, economic loss and casualties caused by a series of serious accidents such as rupture of the containment are avoided. It should be noted that the above application is only illustrative, but not limited to, the heat exchange tube of the present utility model can be applied to other fields to complete heat exchange.

More preferably, the inclined baffle 103 is provided with a plurality of through holes 104 for receiving the heat exchange tubes 3 therethrough.

Specifically, the positions, the number, the sizes and the like of the through holes 104 on the inclined baffle plate 103 are optionally but not limited to be determined according to the positions, the number and the sizes of the heat exchange tubes 3 required to be arranged, so that one through hole 104 can accommodate at least one heat exchange tube to pass through, the number of the heat exchange tubes 3 which can be arranged is increased, the flow of the liquid to be cooled which can flow at present is increased, and the working efficiency of the heat exchanger is further improved.

In this embodiment, as shown in fig. 2, a preferred embodiment of the cooling tube 1 is shown, and before use, the heat exchange tube 3 is installed inside the cooling tube 1 through the through hole 104 on the baffle plate 103, and then is fixed by the end cover 2, so as to achieve the effect of increasing the flow of the liquid to be cooled in the cooling tube 1, so as to further improve the working efficiency of the heat exchanger. It should be noted that the through holes 104 are used for accommodating and stabilizing the heat exchange tubes 3, but the number, spacing, pitch, etc. of the through holes can be set arbitrarily by those skilled in the art according to the size and actual needs of the heat exchange tubes 3.

More preferably, as shown in FIG. 2, the inclined baffles 103 are inclined at an angle β of 35 to 45 to the horizontal.

In this embodiment, a preferred embodiment of the inclined baffle 103 is given, the inclination angle β of the inclined baffle 103 is controlled to be between 35 ° and 45 °, and the inclined baffle 103 in this interval will minimize the probability of vortex formation while ensuring the heat exchange effect of the heat exchanger.

Preferably, as shown in fig. 5, the end cap 2 includes a flow tube 201 at the top of the end cap 2, a baffle plate 202 at the bottom of the end cap 2, and a plurality of heat exchange tube holes 203 in the baffle plate 202.

Specifically, the flow pipe 201 is used as a main pipe for flowing in and out the liquid to be cooled; the baffle plate 202 is used for blocking the leakage of the cooling liquid in the cooling pipe 1; the heat exchange tube holes 203 are used to fix the heat exchange tubes 3 and allow the coolant to flow into the heat exchange tubes 3.

In this embodiment, as shown in fig. 2 and 5, a preferred embodiment of the end cap 2 is shown, and before use, the end cap 2 is mounted on both ends of the cooling tube 1, and the heat exchange tube 3 is fixed by the heat exchange tube holes 203; when in use, the liquid to be cooled enters from the flow pipe 201 of the end cover 2 above the cooling pipe 1, flows into the heat exchange pipe 3 from the heat exchange pipe hole 203, flows to the end cover 2 below the cooling pipe 1 through the heat exchange pipe 3, and flows out from the flow pipe 201 of the end cover 2, so that the heat exchange of the liquid to be cooled can be completed.

It should be noted that, the heat exchange tube holes 203 are used for fixing the heat exchange tube 3 and allowing the liquid to be cooled to flow into the heat exchange tube 3, but the number, the aperture and other parameters can be set arbitrarily by those skilled in the art according to the aperture and the actual requirement of the heat exchange tube 3.

More preferably, a sealing ring is arranged between the blocking plate 202 and the inner wall of the end cover 2.

More specifically, the sealing ring is used for sealing the gap between the blocking plate 202 and the inner wall of the end cover 2, so as to further prevent the cooling liquid in the cooling pipe 1 from leaking.

Preferably, as shown in fig. 4, the heat exchange tube 3 has an outer shape of a corrugated shape continuously bent at an angle α. More preferably, the angle α is 10 ° to 15 °.

Specifically, the corrugated heat exchange tube 3 can effectively increase the contact area between the heat exchange tube 3 and the cooling liquid, and improve the heat exchange effect with the cooling liquid. More specifically, the angle alpha is between 10 degrees and 15 degrees, so that the contact area between the heat exchange tube 3 and the cooling liquid can be increased to the greatest extent under the condition that the normal flow of the liquid to be cooled in the heat exchange tube 3 is ensured.

More preferably, as shown in fig. 4, a plurality of heat exchange butyl cells 301 are arranged on the outer surface of the heat exchange tube 3.

More specifically, the butyl cells 301 are beneficial to further increasing the contact area between the heat exchange tube 3 and the cooling liquid, and meanwhile, the raised butyl cells 301 are beneficial to forming a plurality of small eddy currents on the surface of the heat exchange tube 3, so that the heat exchange effect between the heat exchange tube 3 and the cooling liquid is further increased.

In this embodiment, as shown in fig. 3-4, a preferred embodiment of the heat exchange tube 3 is shown, and when the cooling liquid flows in the cooling tube 1, small vortex is formed at the outer surface of the butyl cell 301 when the cooling liquid passes through the butyl cell 301 on the surface of the heat exchange tube 3, so that the heat exchange between the butyl cell 301 and the cooling liquid is improved, and the heat exchange effect of the heat exchanger is further improved.

It should be noted that the purpose of the butyl cells 301 is to form a plurality of small eddy currents on the periphery of the heat exchange tube 3 for enhancing the heat exchange effect, but the number, spacing, size and other parameters can be set arbitrarily by those skilled in the art according to the actual situation.

Preferably, as shown in fig. 1 and 6, one end of the cooling tube 1 is provided with a stand 4. More preferably, the stand 4 optionally includes, but is not limited to, a stabilizer ring 401, a plurality of lifting blocks 402 located at the periphery of the stabilizer ring 401, a bottom pad 403 located at the end of the lifting blocks 402, and a circular groove 404 located at the upper edge of the stabilizer ring 401.

Specifically, the stand 4 is used for supporting the cooling tube 1 to realize vertical installation of the cooling tube 1. Specifically, the stabilizing ring 401 is used to contact with the cooling tube 1 to maintain the stability of the cooling tube 1; the lifting block 402 is used for increasing the ground clearance of the cooling pipe 1, so that the connection between the external pipeline and the end cover 2 is facilitated; the bottom pad 403 is used for relieving and further improving the stability of the main body of the stand 4; the circular groove 404 is used for matching with the cooling liquid inlet pipe 101 to better support the cooling pipe 1.

In this embodiment, as shown in fig. 1, 2 and 6, a preferred embodiment of the stand 4 is shown, and before use, the stand 4 is first mounted on a flat ground, then the cooling tube 1 is vertically mounted on the stand 4, and the circular groove 404 is used to cooperate with the cooling liquid inlet tube 101.

More preferably, the inner wall of the stabilizing ring 401 is provided with a damping material.

More specifically, the vibration absorbing material is used for absorbing the vibration of the cooling pipe 1 during use, and the stability of the stand 4 is better kept.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A vertical heat exchanger, characterized by comprising a cooling tube (1); a cooling liquid inlet pipe (101) and a cooling liquid outlet pipe (102) which are respectively arranged at the lower edge of the outer wall of the cooling pipe (1) and the upper edge of the outer wall; an inclined baffle plate (103) arranged inside the cooling pipe (1); end covers (2) respectively arranged at the upper port and the lower port of the cooling pipe (1); and a heat exchange tube (3) which is arranged inside the cooling tube (1) and is communicated with the end cover (2);

a cooling liquid inlet pipe (101) and a cooling liquid outlet pipe (102) for respectively injecting and discharging cooling liquid into and from the cooling pipe (1);

an end cover (2) of the upper port for injecting the liquid to be cooled into the heat exchange tube (3); and an end cover (2) of the lower port, which is used for flowing the cooled liquid passing through the heat exchange tube (3) out of the heat exchanger.

2. A vertical heat exchanger according to claim 1, wherein the inclined baffle (103) is provided with a plurality of through holes (104).

3. A vertical heat exchanger according to claim 2, wherein the inclined baffles (103) form an angle β of 35 ° to 45 ° with the horizontal plane.

4. A vertical heat exchanger according to claim 1, wherein the end cap (2) comprises a flow tube (201) at the top of the end cap (2), a baffle plate (202) at the bottom of the end cap (2) and a number of heat exchange tube holes (203) in the baffle plate (202).

5. A vertical heat exchanger according to claim 4, wherein a sealing ring is provided between the blocking plate (202) and the inner wall of the end cap (2).

6. A vertical heat exchanger according to claim 1, characterized in that the heat exchange tube (3) has a corrugated shape, which is continuously bent at an angle α.

7. The vertical heat exchanger of claim 6, wherein the angle α is 10 ° -15 °.

8. A vertical heat exchanger according to claim 1, characterized in that the outer surface of the heat exchange tube (3) is provided with a number of heat exchange butyl cells (301).

9. A vertical heat exchanger according to any one of claims 1-8, characterised in that the cooling tube (1) is provided with a riser (4) at one end for supporting the cooling tube (1).

10. A vertical heat exchanger according to claim 9, wherein the stand (4) comprises a stabilizing ring (401), a number of lifting blocks (402) located at the periphery of the stabilizing ring (401), a bottom pad (403) located at the end of the lifting blocks (402), and a circular groove (404) located at the upper edge of the stabilizing ring (401).