Countercurrent plate heat exchanger

Abstract

The utility model discloses a countercurrent plate type heat exchanger which comprises an upper spraying pipe, a lower spraying pipe and a heat exchanger body, valves are arranged on the upper spraying pipe and the lower spraying pipe respectively, the heat exchanger body comprises a plurality of first channels with openings in the upper side and the lower side, and second channels with openings in the upper side and the lower side are arranged between the adjacent first channels. The lower spraying pipe is arranged on the heat exchanger body in a penetrating mode and provided with a spraying water outlet point corresponding to the second channel, and water discharged from the lower spraying pipe does not enter the first channel. Good cooling, water-saving and white smoke eliminating effects can be integrally achieved, dry and hot air is sent out from an opening in the upper side of the first channel when water is independently introduced into the second channel, wet and hot air is normally sent out from the second channel, the two kinds of air tend to be kept in an unsaturated state after being mixed, and generation of white smoke at an outlet of the cooling tower can be fundamentally restrained; when the first channel and the second channel are simultaneously communicated with water, air-water direct contact heat exchange occurs, the heat exchange efficiency is highest, and the cooling effect is best.

Description

TECHNICAL FIELD

[0001] The utility model relates to circulating water treatment equipment field, concretely relates to a countercurrent plate heat exchanger. BACKGROUND

[0002] The heat exchanger is the core component in the circulating water treatment cooling tower, its role is to provide the occurrence place of the main gas water heat exchange process, taking the traditional countercurrent plate heat exchanger as an example, air passes through the heat exchanger flow channel from bottom to top, and the water flow needing to be cooled passes through the heat exchanger flow channel from top to bottom, and gas and water contact heat exchange, thereby realizing the reduction of water flow temperature, but in the actual research and development and construction use process, find that the existing heat exchanger cannot integrally realize the better cooling and water saving and white smoke effect, and has certain improvement and promotion space. SUMMARY

[0003] In view of the problems in the background art, the utility model aims at providing a countercurrent plate heat exchanger, which effectively solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A countercurrent plate heat exchanger, comprising an upper spray pipe, a lower spray pipe and a heat exchanger body, the upper spray pipe and the lower spray pipe are respectively provided with valves, the upper spray pipe is located above the heat exchanger body, the heat exchanger body comprises a plurality of first channels which are open on both upper and lower sides, and a second channel which is open on both upper and lower sides is arranged between adjacent first channels; the lower spray pipe is arranged on the heat exchanger body, and the lower spray pipe is provided with spray water outlets corresponding to the second channels, and the water outlet of the lower spray pipe does not enter the first channel.

[0006] Further, the heat exchanger body comprises a plurality of vertically arranged heat exchange fins, and the first channel or the second channel is formed between adjacent heat exchange fins.

[0007] Further, a plurality of groups of protrusions are arranged on the heat exchange fins on the left and right sides of the first channel, and the corresponding protrusions are fixedly connected together to form connection points, and the lower spray pipe is inserted into the connection points.

[0008] Further, the lower spray pipe and the upper spray pipe are respectively provided with a plurality of.

[0009] Further, the lower spray pipe and the upper spray pipe are both horizontally arranged and perpendicular to the heat exchange fins.

[0010] The utility model has the following beneficial technical effects:

[0011] The utility model discloses a structure that can realize the independent water supply of the second channel when closing the upper spray pipe and opening the lower spray pipe, and the gas-water wall heat exchange occurs in the first channel at this time, that is, the gas and water do not directly contact, the dry hot air is sent out from the upper opening of the first channel, the wet hot air is normally sent out in the second channel, and the two kinds of air are mixed and the total trend is to maintain the unsaturated state, which can fundamentally inhibit the generation of white smoke at the outlet of the cooling tower, especially suitable for winter use. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic diagram under the front view angle of the embodiment of the utility model.

[0013] Figure 2 It is the left view of the heat exchanger body in the embodiment of the utility model. DETAILED DESCRIPTION

[0014] The embodiment of the utility model is further described in detail in combination with the drawings and the embodiment. The following embodiment is used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0015] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, it is necessary to explain that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0016] As Figure 1 And Figure 2As shown, the counterflow plate heat exchanger described in the embodiment comprises an upper spray pipe 1, a lower spray pipe 2 and a heat exchanger body 3, the upper spray pipe 1 and the lower spray pipe 2 are respectively provided with valves, the opening and closing of the upper spray pipe 1 and the lower spray pipe 2 can be controlled through the valves, so as to control whether the water in different channels in the heat exchanger body 3 is passed or not, the heat exchanger body 3 comprises a plurality of first channels 4 which are open on both upper and lower sides, the adjacent first channels 4 are provided with second channels 5 which are open on both upper and lower sides, the upper spray pipe 1 is located above the heat exchanger body 3, the water outlet of the upper spray pipe 1 can be provided with only spray holes or spray heads entering the first channels 4, or can be provided with spray holes and spray heads entering the first channels and the second channels at the same time; the lower spray pipe 2 is arranged on the heat exchanger body 3 and is provided with spray water outlets 6 corresponding to the second channels 5, the spray water outlets 6 on the lower spray pipe 2 in each second channel 5 can be one or more, the spray water outlets 6 are spray holes, and the water outlet of the lower spray pipe 2 does not enter the first channels.

[0017] The heat exchanger body 3 comprises a plurality of vertically arranged heat exchange fins 7, the material of the heat exchange fins 7 is PVC or stainless steel, the adjacent heat exchange fins 7 form the first channels 4 or the second channels 5, a plurality of groups of protrusions 8 are correspondingly arranged on the heat exchange fins 7 on the left and right sides of the first channels 4, the corresponding protrusions 8 are bonded together to form connection points, the connection points are provided with holes, and the lower spray pipe 2 is inserted into the holes and then connected with the connection points.

[0018] The lower spray pipe 2 and the upper spray pipe 1 are both horizontally arranged and perpendicular to the heat exchange fins 7, the lower spray pipe 2 and the upper spray pipe 1 are both distributed in multiple numbers along the front and back directions, the multiple lower spray pipes 2 are located on the same horizontal plane, and the multiple upper spray pipes 1 are located on the same horizontal plane.

[0019] The working principle of the embodiment is as follows:

[0020] When it is necessary to ensure the water-saving and white smoke-eliminating effects, the upper spray pipe 1 is closed and the lower spray pipe 2 is opened, so as to realize the separate water passing of the second channels 5, at this time, the gas-water wall heat exchange occurs in the first channels 4, that is, the gas and water do not directly contact, the airflow in the first channels 4 absorbs the heat of the water flow in the second channels 5 to be heated, the dry hot air is sent out from the upper opening of the first channels 4, the normal wet hot air is sent out from the second channels 5, and the mixture of the two kinds of air tends to keep unsaturated state, so as to fundamentally inhibit the generation of white smoke at the outlet of the cooling tower, which is especially suitable for use in winter; when it is necessary to ensure the cooling effect in summer, the upper spray pipe 1 is opened, at this time, the gas-water direct contact heat exchange occurs in the first channels 4 and the second channels 5, the heat exchange efficiency is the highest, and the cooling effect is the best, the air volume of the cooling tower fan can be reduced according to the actual situation, that is, the energy saving of the fan driving motor is realized; compared with the prior art, the embodiment can integrally realize the good cooling and water-saving and white smoke-eliminating effects, and is suitable for popularization and use.

[0021] The embodiments of the present application are presented for purposes of illustration and description, and are not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teachings. It is intended that the embodiments be limited only by the claims. A specialized consideration and description of the embodiments are presented in order to provide a thorough and enabling disclosure of the present application, and to provide those skilled in the art with a complete patentable specification and concept of the application so that they can design and use various embodiments having various modifications in accordance with the principles of the application.

Claims

1. A counterflow plate heat exchanger, characterized in that The application relates to a heat exchanger, which comprises an upper spray pipe, a lower spray pipe and a heat exchanger body, valves are arranged on the upper spray pipe and the lower spray pipe respectively, the upper spray pipe is located above the heat exchanger body, the heat exchanger body comprises a plurality of first channels which are open on both sides, second channels which are open on both sides are arranged between adjacent first channels, the lower spray pipe is arranged on the heat exchanger body, and the lower spray pipe is provided with spray water outlets corresponding to the second channels, and the water outlet of the lower spray pipe does not enter the first channels.

2. A counterflow plate heat exchanger according to claim 1, characterized in that The heat exchanger body comprises a plurality of vertically arranged heat exchange fins, and the first channels or the second channels are formed between adjacent heat exchange fins.

3. A counterflow plate heat exchanger according to claim 2, characterized in that A plurality of groups of protrusions are arranged on the heat exchange fins on the left and right sides of the first channels correspondingly, the corresponding protrusions are fixedly connected together to form connecting points, and the lower spray pipe is inserted into the connecting points.

4. A counterflow plate heat exchanger according to claim 2 or 3, characterised in that The lower spray pipe and the upper spray pipe are respectively provided with a plurality of.

5. A counterflow plate heat exchanger according to claim 4, characterised in that The lower spray pipe and the upper spray pipe are horizontally arranged and perpendicular to the heat exchange fins.

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