CN221099452U - Plate Heat Exchanger - Google Patents

Abstract

The present application provides a plate heat exchanger, which relates to the technical field of plate heat exchange equipment. The plate heat exchanger includes a secondary side return pipe, which includes a pipe body, a first insulation layer and a heating component. The first insulation layer is arranged on the inner wall surface of the pipe body, and the material of the first insulation layer includes an ultra-fine glass surface insulation material. The heating component is arranged on a side of the first insulation layer away from the inner wall surface of the pipe body. The heating component cooperates with the first insulation layer to improve the insulation effect of the pipe body.

Description

Plate Heat Exchanger

Technical Field

The present application relates to the technical field of plate heat exchange equipment, and in particular to a plate heat exchanger.

Background technique

Plate heat exchanger is a common heat exchange equipment. The heat transfer process of plate heat exchanger is completed through heat transfer between plates. When two media with different temperatures flow through the plate heat exchanger, heat will be transferred from the medium with high temperature to the medium with low temperature.

The secondary side return water pipe is a channel for outputting the low-temperature medium heated after heat transfer. The heated low-temperature medium can be reused, for example, the secondary side return water pipe is connected to the water supply pipe for users to use.

The inventors found that most common secondary return pipes are not equipped with insulation structures. For example, Patent 201921329682.5 discloses an integrated high-temperature steam-water plate heat exchanger, in which the secondary cold water return pipe is a separate channel. This structure of the secondary return pipe makes it easy for the heat of the medium to dissipate after the heated low-temperature medium passes into the secondary return pipe, which causes the temperature of the medium to fail to meet the use requirements.

Utility Model Content

A technical problem to be solved by the present application is: how to improve the thermal insulation effect of the secondary side return pipe.

In order to solve the above technical problems, the embodiment of the present application provides a plate heat exchanger, including a secondary side return pipe, the secondary side return pipe includes a pipe body, a first insulation layer and a heating component. The first insulation layer is arranged on the inner wall surface of the pipe body, and the material of the first insulation layer includes an ultra-fine glass surface insulation material. The heating component is arranged on the side of the first insulation layer away from the inner wall surface of the pipe body.

In some embodiments, the heating element comprises a heating wire.

In some embodiments, the heating wire is in a spiral shape wound around the axis of the tube.

In other embodiments, the heating wire is wavy along the circumference of the tube body.

In some embodiments, an outer wall surface of the heating wire is provided with an insulating layer, and the material of the insulating layer includes polytetrafluoroethylene.

In some embodiments, a second thermal insulation layer is provided on the outer wall surface of the tube body.

In some embodiments, the material of the second thermal insulation layer includes rubber-plastic sponge.

In some embodiments, the inner peripheral wall of the tube body is provided with an anti-rust coating.

In some embodiments, a valve is also included, and the valve is arranged on the pipe body to control the flow of the pipe body.

In some embodiments, the valve is disposed after the heating layer along the conveying direction of the tube.

Through the above technical solution, the heating component cooperates with the first insulation layer to improve the insulation effect of the pipe body. The first insulation layer is arranged in the pipe body, which improves the insulation effect of the medium in the pipe body on the one hand, and reduces the influence on the outer diameter of the pipe body on the other hand.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the structure of a plate heat exchanger provided in some embodiments of the present application;

FIG2 is a schematic diagram of the internal structure of a secondary water return pipe (the heating wire is spiral) provided in some embodiments of the present application;

FIG3 is a schematic diagram of the internal structure of a secondary water return pipe (the heating wire is wavy) provided in some embodiments of the present application.

Description of reference numerals:

1. Plate heat exchanger; 10. Secondary side return pipe; 101. Pipe body; 102. Anti-rust coating; 103. First insulation layer; 104. Second insulation layer; 105. Valve; 106. Heating component.

Detailed ways

The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values set forth in these embodiments should be interpreted as being merely exemplary, rather than as limiting.

It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as those in general use, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

Referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides a plate heat exchanger 1, including a secondary side return water pipe 10, wherein the secondary side return water pipe 10 includes a pipe body 101, a first insulation layer 103 and a heating component 106. The first insulation layer 103 is arranged on the inner wall surface of the pipe body 101, and the material of the first insulation layer 103 includes an ultra-fine glass surface insulation material. The heating component 106 is arranged on the side of the first insulation layer 103 away from the inner wall surface of the pipe body 101.

The pipe body 101 is used to output the low-temperature medium heated in the plate heat exchanger 1 .

The first thermal insulation layer 103 is used to keep the medium in the pipe body 101 warm. The first thermal insulation layer 103 can be arranged around the circumference of the pipe body 101 .

The first thermal insulation layer 103 is arranged in the pipe body 101, which, on the one hand, improves the thermal insulation effect of the medium in the pipe body 101, and on the other hand, reduces the impact on the outer diameter of the pipe body 101. If the first thermal insulation layer 103 is arranged on the outer wall of the pipe body 101, the outer diameter of the pipe body 101 increases, thereby increasing the space occupied by the pipe body 101, which is not conducive to the installation and arrangement of the pipe body 101.

The ultra-fine glass surface insulation material has good heat insulation, which increases the insulation effect of the first insulation layer 103. In addition, the ultra-fine glass surface insulation material has good corrosion resistance, which reduces the risk of the first insulation layer 103 being corroded by the medium in the tube body 101 and increases the service life of the first insulation layer 103.

The heating component 106 is used to heat the medium in the pipe body 101 so that the temperature of the medium in the pipe body 101 can be maintained within a certain range. The heating component 106 cooperates with the first thermal insulation layer 103 to improve the thermal insulation effect of the pipe body 101 .

2 , in some embodiments, the heating element 106 includes a heating wire.

The heating wire may be one or more. When there are multiple heating wires, the multiple heating wires may be wound together to increase the service life of the heating wires. Alternatively, the multiple heating wires may be arranged at intervals to increase the heating area.

The heating wire is connected to a power source and can generate heat to heat the medium in the pipe body 101 .

The heating principle of the heating wire is well known to those skilled in the art and will not be described in detail here.

Firstly, the heating wire occupies little space, thereby reducing the risk of the heating component 106 occupying too much space in the tube body 101. Secondly, the heating wire has a reliable structure, which increases the reliability of the heating component 106. Furthermore, the heating wire has high heating efficiency and can quickly heat the medium.

Referring to FIG. 2 , in some embodiments, the heating wire is in a spiral shape wound around the axis of the tube body 101 .

The heating wire is spiral-shaped, which increases the contact area between the heating component 106 and the medium in the tube body 101 , thereby increasing the heating effect of the heating component 106 .

Referring to FIG. 3 , in some other embodiments, the heating wire is wavy along the circumference of the tube body 101 .

The heating wire is wavy, which increases the contact area between the heating component 106 and the medium in the tube body 101 , thereby increasing the heating effect of the heating component 106 .

Referring to FIG. 2 , in some embodiments, an insulating layer is disposed on the outer wall surface of the heating wire, and the material of the insulating layer includes polytetrafluoroethylene.

The insulating layer is used to electrically insulate the heating wire from the heat-conducting medium, thereby improving the safety of the plate heat exchanger 1 during operation.

The insulating layer may include only polytetrafluoroethylene, or may include polytetrafluoroethylene and other materials. For example, the insulating layer may also include an adhesive material, so that the insulating layer can be bonded to the heating wire, thereby increasing the connection reliability between the insulating layer and the heating wire.

On the one hand, polytetrafluoroethylene material has good electrical insulation properties, which improves the insulation effect of the heating wire. On the other hand, it has good heat resistance and chemical resistance, which can meet the use needs of high temperature environments.

Referring to FIG. 2 , in some embodiments, a second thermal insulation layer 104 is disposed on the outer wall surface of the tube body 101 .

The second thermal insulation layer 104 may be in a sleeve shape and sleeved on the outer wall surface of the tube body 101 , or the second thermal insulation layer 104 may be in a block shape to facilitate installation of the second thermal insulation layer 104 on the outer wall surface of the tube body 101 .

The second insulation layer 104 can be bonded to the outer wall of the tube body 101 , or a clamp can be sleeved on the outer wall of the tube body 101 and the second insulation layer 104 can be clamped between the clamp and the tube body 101 so that the second insulation layer 104 can be fixed to the outer wall of the tube body 101 .

The second thermal insulation layer 104 can improve the thermal insulation effect of the tube body 101 and reduce the heat loss of the medium in the tube body 101 .

In some embodiments, the material of the second thermal insulation layer 104 includes rubber sponge.

The second insulation layer 104 may only include rubber-plastic sponge, or the second insulation layer 104 may also be a composite material including rubber-plastic sponge and other materials. For example, the second insulation layer 104 may also include an adhesive material so that the rubber-plastic sponge can be bonded to the heating layer.

The rubber-plastic sponge has a good heat-insulating effect, and improves the heat-insulating effect of the tube body 101 .

Referring to FIG. 2 , in some embodiments, the inner circumferential wall of the tube body 101 is provided with an anti-rust coating 102 .

The anti-rust coating 102 may be made of materials such as epoxy coating or polyurethane coating, and may be specifically selected from existing products.

The anti-rust coating 102 is provided on the inner wall of the tube body 101 , which reduces the risk of corrosion of the tube body 101 and increases the service life of the tube body 101 .

Referring to FIG. 2 , in some embodiments, a valve 105 is further included. The valve 105 is disposed on the pipe body 101 to control the flow of the pipe body 101 .

The valve 105 can control the opening and closing of the tube body 101 . Meanwhile, the valve 105 can also adjust the flow rate in the tube body 101 by controlling the opening and closing size thereof.

The valve 105 may be a manual valve 105 or an existing automatic valve 105 .

On the one hand, valve 105 can close tube body 101 when tube body 101 is not needed to transport medium, and on the other hand, it can also adjust the temperature of the medium output by tube body 101. Specifically, if the temperature of the medium output by tube body 101 is low and does not meet the use requirements, the flow rate output by tube body 101 can be reduced through valve 105, and the heating time of the medium in tube body 101 by heating component 106 can be increased to increase the output medium temperature.

Referring to FIG. 2 , in some embodiments, along the conveying direction of the tube body 101 , the valve 105 is disposed after the heating layer.

The conveying direction of the tube body 101 refers to the flow direction of the medium in the tube body 101 , and the conveying direction of the tube body 101 may be the direction shown by the X-axis in the figure.

The valve 105 is arranged behind the heating layer, so that when the flow rate of the medium output from the tube body 101 is reduced by the valve 105, the medium in the tube body 101 can be gathered at the heating component 106, and the medium is heated by the heating component 106 to ensure the temperature of the medium output from the tube body 101.

So far, the various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims (10)

1. Plate heat exchanger, including secondary side wet return (10), characterized in that, secondary side wet return (10) include:

a tube body (101);

The first heat preservation layer (103) is arranged on the inner wall surface of the pipe body (101), and the material of the first heat preservation layer (103) comprises an ultrafine glass surface heat preservation material;

and a heating member (106) provided on the side of the first heat-insulating layer (103) away from the inner wall surface of the pipe body (101).

2. A plate heat exchanger according to claim 1, wherein the heating member (106) comprises a heating wire.

3. A plate heat exchanger according to claim 2, wherein the heating wire is helical around the axis of the tube body (101).

4. A plate heat exchanger according to claim 2, wherein the heating wires are wavy in the circumferential direction of the tube body (101).

5. A plate heat exchanger according to claim 2, wherein the outer wall surface of the heating wire is provided with an insulating layer, and the insulating layer comprises polytetrafluoroethylene.

6. A plate heat exchanger according to any one of claims 1-5, wherein the outer wall surface of the tube body (101) is provided with a second heat insulating layer (104).

7. A plate heat exchanger according to claim 6, wherein the material of the second heat insulating layer (104) comprises rubber and plastic sponge.

8. A plate heat exchanger according to any one of claims 1-5, wherein the inner peripheral wall of the tube body (101) is provided with a rust inhibiting coating (102).

9. A plate heat exchanger according to any one of claims 1-5, further comprising a valve (105), the valve (105) being arranged to the tube (101) for controlling the flow of the tube (101).

10. A plate heat exchanger according to claim 9, wherein the valve (105) is arranged after the heating element (106) in the conveying direction of the tube body (101).