Tubular heat exchanger beneficial to drainage
By designing a U-shaped tube-type heat exchanger, the problem of water freezing and cracking during low-temperature shutdown is solved, and a rapid and thorough drainage effect is achieved to avoid equipment damage.
Patent Information
- Application Number
- CN202422509414.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-16
AI Technical Summary
When the existing tube-type heat exchanger is shut down in a low temperature environment, the water is prone to freeze and cause the pipeline to freeze and crack, which cannot be completely drained, resulting in equipment damage.
A U-shaped connected pipe-type heat exchanger is designed, and the U-shaped connected pipe is set inclined to form a continuous W-shaped arrangement. The water inlet interface is lower than the water outlet interface. It is connected through the water inlet pipeline and the water outlet pipeline. The pipe is sealed and a sewage valve and exhaust valve are installed to achieve rapid and thorough drainage.
The structure is simple and easy to operate. It can quickly and thoroughly drain the water in the tube, avoid freezing and cracking, and simplify the drainage workload.
Smart Images
Figure CN223228841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a shell and tube heat exchanger which is beneficial to drainage. Background Art
[0002] Spunbond and meltblown nonwovens production equipment typically requires specific temperature requirements for the drafting process air, so water-cooled chillers are often used. The chilled water produced by the chiller is pumped to a shell-and-tube heat exchanger. The process air passes through the outer periphery of the shell-and-tube heat exchanger, exchanging heat with the chilled water inside the tubes, thereby cooling the process air.
[0003] However, due to significant global weather variations and varying national conditions, especially in countries like Northeast China, Northern Europe, and Russia, there is a need for proactive shutdowns during nights and weekends. During shutdowns, the low ambient temperature can cause water in shell-and-tube heat exchangers to freeze, potentially cracking the pipes. Therefore, drainage is essential before shutdown. Older designs cannot completely drain the tubes, often resulting in tubes freezing and cracking. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a shell and tube heat exchanger that is conducive to drainage.
[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a shell and tube heat exchanger which is conducive to drainage, comprising a frame, a U-shaped connecting pipe, a water inlet pipe and a water outlet pipe, wherein several U-shaped connecting pipes are arranged obliquely, and adjacent U-shaped connecting pipes are arranged horizontally symmetrically with each other, and the ends of adjacent U-shaped connecting pipes are connected in sequence by pipes of the same size to form a U-shaped row, one side of the U-shaped row is a water outlet interface, and the other is a water inlet interface, the water inlet interface is lower than the water outlet interface, and multiple U-shaped rows are arranged on the frame at equal intervals in the height direction, the water outlet interface and the water inlet interface are arranged on one side of the frame, all the water inlet interfaces are horizontally connected to a vertically arranged water inlet pipe, and all the water outlet interfaces are connected to a vertically arranged water outlet pipe; a water inlet is provided at the bottom of the water inlet pipe, and a sewage valve is provided at the lower end of the water inlet pipe; a water outlet is provided above the water outlet pipe, and an exhaust valve is installed at the upper end of the water outlet pipe.
[0006] Furthermore, the U-shaped arrangement is a continuous W-shaped arrangement.
[0007] Furthermore, a U-shaped connecting pipe head is connected to a previous adjacent U-shaped connecting pipe tail through a pipe diameter, and a U-shaped connecting pipe tail is connected to a next adjacent U-shaped connecting pipe head through a pipe diameter.
[0008] Furthermore, the rack is a heat exchanger.
[0009] Furthermore, the upper end of the water inlet pipe is sealed; and the lower end of the water outlet pipe is sealed.
[0010] Furthermore, a drain valve is installed at the lower end of the water outlet pipe.
[0011] The beneficial effects of the utility model are: simple structure, convenient operation, fast drainage speed and thorough drainage. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is the main view.
[0013] Figure 2 It is a top view.
[0014] Figure 3 It is a schematic diagram of a U-shaped row. DETAILED DESCRIPTION
[0015] The following is a combination of the appended examples of the present invention Figure 1-3 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0016] Example 1 reference Figure 1-3 , a shell and tube heat exchanger that is conducive to drainage, includes a frame 4, a U-shaped connecting pipe 1, a water inlet pipe 2 and a water outlet pipe 3. Several U-shaped connecting pipes are arranged obliquely, and adjacent U-shaped connecting pipes are arranged horizontally symmetrically with each other. The ends of adjacent U-shaped connecting pipes are connected in sequence by pipes of the same size to form a U-shaped row 5. One side of the U-shaped row is a water outlet interface, and the other is a water inlet interface 6. The water inlet interface is lower than the water outlet interface 7. Multiple U-shaped rows are arranged on the frame at equal intervals in the height direction, and the water outlet interface and water inlet interface are arranged on one side of the frame. All water inlet interfaces are horizontally connected to a vertically arranged water inlet pipe, and all water outlet interfaces are connected to a vertically arranged water outlet pipe; a water inlet 8 is provided at the bottom of the water inlet pipe, and a sewage valve 9 is provided at the lower end of the water inlet pipe; a water outlet 10 is provided above the water outlet pipe, and an exhaust valve 11 is installed at the upper end of the water outlet pipe.
[0017] A shell and tube heat exchanger that is conducive to drainage, wherein the U-shaped arrangement is a continuous W-shaped arrangement.
[0018] A shell-and-tube heat exchanger is provided which is advantageous for drainage. A U-shaped connecting tube head is connected to the tail of the previous adjacent U-shaped connecting tube through a pipe diameter, and a U-shaped connecting tube tail is connected to the head of the next adjacent U-shaped connecting tube through a pipe diameter.
[0019] The utility model relates to a shell and tube heat exchanger which is advantageous for drainage, wherein the frame is the heat exchanger.
[0020] A shell-and-tube heat exchanger is provided which is conducive to drainage. The upper end of the water inlet pipe is sealed; the lower end of the water outlet pipe is sealed.
[0021] A shell and tube heat exchanger is provided which is conducive to drainage. A drain valve is installed at the lower end of the outlet pipe.
[0022] A shell-and-tube heat exchanger that facilitates drainage. To drain the water from the shell-and-tube heat exchanger, simply open the drain valve below the water inlet. Once the water has cleared from the drain valve outlet, close the drain valve. The water in the tubes is then completely drained. This convenient and quick structure is simple to operate, simplifying drainage work. Simply open the drain valve at the lower end of the radiator, eliminating the need for a separate high-pressure air gun.
[0023] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.
Claims
1. A shell-and-tube heat exchanger that facilitates drainage, comprising a frame, a U-shaped connecting pipe, a water inlet pipe, and a water outlet pipe, characterized in that: Several U-shaped connecting pipes are arranged obliquely, and adjacent U-shaped connecting pipes are arranged horizontally symmetrically with each other. The ends of adjacent U-shaped connecting pipes are connected in sequence by pipes of the same size to form a U-shaped row. One side of the U-shaped row is a water outlet interface, and the other is a water inlet interface. The water inlet interface is lower than the water outlet interface. Multiple U-shaped rows are arranged on the rack at equal intervals along the height direction. The water outlet interface and the water inlet interface are arranged on one side of the rack. All the water inlet interfaces are horizontally connected to a vertically arranged water inlet pipe, and all the water outlet interfaces are connected to a vertically arranged water outlet pipe; a water inlet is provided at the bottom of the water inlet pipe, and a sewage valve is provided at the lower end of the water inlet pipe; a water outlet is provided above the water outlet pipe, and an exhaust valve is installed at the upper end of the water outlet pipe.
2. The shell-and-tube heat exchanger advantageous for drainage according to claim 1, characterized in that: The U-shaped row is a continuous W-shaped arrangement.
3. The shell-and-tube heat exchanger advantageous for drainage according to claim 1, characterized in that: The head of a U-shaped connecting pipe is connected to the tail of a previous adjacent U-shaped connecting pipe through a pipe diameter, and the tail of a U-shaped connecting pipe is connected to the head of a subsequent adjacent U-shaped connecting pipe through a pipe diameter.
4. The shell-and-tube heat exchanger advantageous for drainage according to claim 1, characterized in that: The rack is a heat exchanger.
5. The shell-and-tube heat exchanger advantageous for drainage according to claim 1, characterized in that: Seal the top of the water inlet pipe and the bottom of the water outlet pipe.
6. The shell-and-tube heat exchanger advantageous for drainage according to claim 1, characterized in that: A drain valve is installed at the lower end of the outlet pipe.