Exhaust and emptying confluence device for all-welded multi-pass plate heat exchanger
By setting up baffle plates and exhaust and exhaust components in a fully welded multi-process plate heat exchanger, the problems of gas resistance and media retention are solved, and more efficient heat exchange effects and simplified operating procedures are achieved.
Patent Information
- Application Number
- CN202421134321.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In the multi-process design, the existing fully welded plate heat exchanger is prone to form gas resistance and affect the heat exchange effect, and the medium is easily stuck in the heat exchanger when the equipment is shut down, resulting in increased operational complexity and difficulty.
Design a fully welded multi-process plate heat exchanger exhaust and exhaust fusion device, and divides the baffle into an upper chamber and a lower chamber in the pipe box, and uses exhaust members and exhaust members (including ball valves and Check valve) realizes the confluence exhaust and evacuation of the medium to avoid gas resistance and media retention.
It effectively avoids gas resistance affecting the heat exchange effect, solves the problem of media retention when the equipment is shut down, and simplifies operation and operation process.
Smart Images
Figure CN222352988U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plate heat exchangers, in particular to an exhaust and emptying confluence device for a fully welded multi-flow plate heat exchanger. Background Art
[0002] In the current fully welded plate heat exchanger, two media of different temperatures first enter the pipe box through the connecting flange, and then flow into the heat exchange flow channel for cold and heat exchange. In order to fully utilize the heat energy to achieve a higher heat exchange effect, a completely isolated baffle is added to the heat exchange pipe box to change the direction of the fluid, which is a multi-pass plate heat exchanger.
[0003] For multi-pass heat exchangers, in order to avoid air blockage affecting the heat exchange effect and the retention of media in the heat exchanger when the equipment is shut down, exhaust and drain valves need to be installed at the highest and lowest points of each section of the heat exchanger inlet and outlet. This will not only increase the difficulty of taking over at the customer's site, but also make the operation complicated and cumbersome during operation. Utility Model Content
[0004] The utility model aims to solve the above defects and provides an exhaust and emptying merging device for a fully welded multi-flow plate heat exchanger.
[0005] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: a fully welded multi-flow plate heat exchanger exhaust, emptying and merging device, including a pipe box and a heat exchange plate bundle, the heat exchange plate bundle is stacked to form a heat exchange plate bundle group, and the heat exchange plate bundle group is arranged in the pipe box, the space formed by the upper end of the heat exchange plate bundle group and the inner wall of the pipe box is divided into a plurality of upper chambers by a baffle so that the medium in the upper chamber can enter and exit the flow channel between the heat exchange plate bundles, the space formed by the lower end of the heat exchange plate bundle group and the inner wall of the pipe box is divided into a plurality of lower chambers by a baffle so that the medium in the lower chamber can enter and exit the flow channel between the heat exchange plate bundles, the top of the pipe box is provided with a medium inlet connected to the first upper chamber, the bottom of the pipe box is provided with a medium outlet connected to the last lower chamber, the highest points of the upper chambers are respectively connected to the exhaust components for merging and exhausting, and the lowest points of the lower chambers are respectively connected to the emptying components for merging and emptying the medium in the pipe box.
[0006] A further improvement includes that the exhaust component includes an upper check valve and an upper ball valve connected to the upper chamber through a pipeline, and the upper ball valve is connected in parallel with the upper check valve through a pipeline. After the medium enters the upper chamber, the air in the upper chamber enters the exhaust component, and the air in the upper chamber can be combined and discharged by opening the upper ball valve.
[0007] A further improvement includes that the emptying component includes a lower check valve and a lower ball valve connected to the lower chamber through a pipeline, and the lower ball valve is connected in parallel with the lower check valve through a pipeline. After use, medium will remain in the lower chamber, and the medium in the lower chamber can be combined and discharged by opening the lower ball valve.
[0008] The beneficial effects of the utility model are as follows: the design avoids the formation of air blockage in the heat exchanger that affects the heat exchange effect by arranging an exhaust component, and solves the problem of medium being retained in the heat exchanger when the equipment is shut down by arranging an emptying component. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0010] Figure 1 It is the front view of the utility model;
[0011] Figure 2 yes Figure 1 Middle DD section view;
[0012] Figure 3 It is a top view of the utility model;
[0013] In the figure, 1- medium outlet, 2- lower chamber, 3- upper chamber, 4- upper ball valve, 5- upper check valve, 6- medium inlet, 7- baffle, 8- heat exchange plate bundle, 9- pipe box, 10- lower check valve, 11- lower ball valve. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0015] according to Figure 1 , Figure 2 and Figure 3As shown, a fully welded multi-flow plate heat exchanger exhaust and emptying confluence device comprises a pipe box 9 and a heat exchange plate bundle 8, wherein the heat exchange plate bundle 8 is stacked to form a heat exchange plate bundle group, and the heat exchange plate bundle group is arranged in the pipe box 9, and the space formed by the upper end of the heat exchange plate bundle group and the inner wall of the pipe box 9 is divided into a plurality of upper chambers 3 by a baffle 7 so that the medium in the upper chamber 3 can enter and exit the flow channel between the heat exchange plate bundle 8, and the space formed by the lower end of the heat exchange plate bundle group and the inner wall of the pipe box 9 is divided into a plurality of lower chambers 2 by a baffle 7 so that the medium in the lower chamber 2 can enter and exit the flow channel between the heat exchange plate bundle 8, the top of the pipe box 9 is provided with a medium inlet 6 connected to the first upper chamber 3, and the bottom of the pipe box 9 is provided with a medium outlet 1 connected to the last lower chamber 2, the highest points of the upper chambers 3 are respectively connected to exhaust components for confluence and exhaust, and the lowest points of the lower chambers 2 are respectively connected to emptying components for confluence and emptying of the medium in the pipe box 9.
[0016] The exhaust component includes an upper check valve 5 and an upper ball valve 4 connected to the upper chamber 3 through a pipeline. The upper ball valve 4 is connected in parallel with the upper check valve 5 through a pipeline. After the medium enters the upper chamber 3, the air in the upper chamber 3 enters the exhaust component. By opening the upper ball valve 4, the air in the upper chamber 3 can be combined and discharged, thereby avoiding the formation of air blockage in the upper chamber 3 to affect the heat exchange effect.
[0017] The emptying component includes a lower check valve 10 and a lower ball valve 11 connected to the lower chamber 2 through a pipeline. The lower ball valve 11 is connected in parallel with the lower check valve 10 through a pipeline. After use, medium will remain in the lower chamber 2. By opening the lower ball valve 11, the medium in the lower chamber 2 can be combined and discharged. The lower check valve 10 is set to prevent the medium from entering other pipe boxes during operation to cause a short circuit and reduce the heat exchange effect. This design can solve the problem of medium retention in the heat exchanger when the equipment is shut down.
[0018] Working principle: The multi-flow plate heat exchanger introduces medium through the inlet and outlet on one side of the transverse side, and introduces medium through the inlet and outlet on the longitudinal side, so that different media pass through the flow channels between the heat exchange plate bundles 8 to exchange heat. First, add medium to the medium inlet 6, and the medium enters the first upper chamber 3 and then passes through the flow channels between the heat exchange plate bundles 8 and then enters the first lower chamber 2. The medium in the first lower chamber 2 enters the second upper chamber 3 through the flow channels between the heat exchange plate bundles 8, and the medium in the second upper chamber 3 enters the second lower chamber 2 through the flow channels between the heat exchange plate bundles 8, and so on, until the medium enters the last lower chamber 2 and is discharged from the medium outlet 1;
[0019] When the medium enters the upper chamber 3, the air inside the upper chamber 3 will enter the exhaust component and merge and be discharged. After the upper ball valve 4 is opened, the air will merge and be discharged through the pipeline.
[0020] The medium accumulated in the lower chamber 2 is discharged through the emptying component, and after the upper ball valve 4 is opened, the medium is discharged through the pipeline.
[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A fully welded multi-pass plate heat exchanger exhaust and emptying confluence device, characterized in that: The invention comprises a pipe box (9) and a heat exchange plate bundle (8), wherein the heat exchange plate bundle (8) is stacked to form a heat exchange plate bundle group, and the heat exchange plate bundle group is arranged in the pipe box (9), and the space formed by the upper end of the heat exchange plate bundle group and the inner wall of the pipe box (9) is divided into a plurality of upper chambers (3) by a baffle (7) so that the medium in the upper chamber (3) can enter and exit the flow channel between the heat exchange plate bundle (8), and the space formed by the lower end of the heat exchange plate bundle group and the inner wall of the pipe box (9) is divided into a plurality of lower chambers (3) by a baffle (7) The chamber (2) is configured to allow the medium in the lower chamber (2) to enter and exit the flow channel between the heat exchange plate bundles (8); the top of the pipe box (9) is provided with a medium inlet (6) connected to the first upper chamber (3); the bottom of the pipe box (9) is provided with a medium outlet (1) connected to the last lower chamber (2); the highest point of the upper chamber (3) is respectively connected to an exhaust component for combined exhaust; the lowest point of the lower chamber (2) is respectively connected to an emptying component for combined exhaust of the medium in the pipe box (9).
2. The exhaust and emptying merging device of a fully welded multi-pass plate heat exchanger according to claim 1, characterized in that: The exhaust component comprises an upper check valve (5) and an upper ball valve (4) connected to the upper chamber (3) via a pipeline. The upper ball valve (4) is connected in parallel with the upper check valve (5) via the pipeline. After the medium enters the upper chamber (3), the air in the upper chamber (3) enters the exhaust component. By opening the upper ball valve (4), the air in the upper chamber (3) can be combined and discharged.
3. The exhaust and emptying merging device of a fully welded multi-pass plate heat exchanger according to claim 1, characterized in that: The emptying component comprises a lower check valve (10) and a lower ball valve (11) connected to the lower chamber (2) via a pipeline. The lower ball valve (11) is connected in parallel with the lower check valve (10) via a pipeline. After use, a medium will remain in the lower chamber (2). By opening the lower ball valve (11), the medium in the lower chamber (2) can be combined and discharged.