Combined compressed air precooler
By designing a combined compressed air precooler, including cooling water and refrigerated water heat exchange assembly, combined with wire mesh defoamer and automatic drainage, the problems of large amount of frozen water and high investment cost in the existing technology are solved, and compact Structural, low operating costs and efficient cooling functions.
Patent Information
- Application Number
- CN202323384645.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2033-12-12
AI Technical Summary
When existing compressed air precoolers reduce the compressed air inlet temperature, they have large amounts of refrigerated water, high operating costs, or require two-stage coolers in series, resulting in high investment costs, many pipeline joints and large space occupied.
A combined compressed air precooler is designed, including a cooling water heat exchange assembly and a refrigerated water heat exchange assembly, sealing and fixing through sealing gaskets and fastening bolts, combined with a wire mesh defoamer and an automatic drainer. Implement two-level cooling functions.
It has achieved compact structure, small size and low operating costs. One precooler can realize two-stage cooling functions, simple circulation of compressed air, small flow resistance, and low overall pressure loss.
Smart Images
Figure CN222528389U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a compressed air precooler. Background Art
[0002] For adsorption dryers with a pressure dew point requirement of -70℃ or higher, the compressed air inlet temperature needs to be reduced to less than 25℃, while the compressed air temperature from the air compressor is relatively high, so a compressed air precooler needs to be installed at the front end of the adsorption dryer. Common precoolers on the market are water coolers, which can cool the compressed air to 35~38℃ with 32℃ cooling water; if you want to further reduce the compressed air inlet temperature, you need to choose 7~12℃ chilled water. Therefore, when matching an adsorption dryer with a -70℃ pressure dew point, the common practice is to use 7~12℃ chilled water to directly cool the compressed air to less than 25℃. This method uses a large amount of chilled water and has high operating costs; or use two-stage coolers in series, with the first stage using 32℃ cooling water to cool the compressed air to 35~38℃, and the second stage using 7~12℃ chilled water to cool the compressed air to 20~25℃. This method has high investment costs, many pipe joints, and occupies a large space. Summary of the invention
[0003] The purpose of the utility model is to provide a combined compressed air preheater to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined compressed air precooler, comprising a cooler shell, a cooling water heat exchange assembly, a chilled water heat exchange assembly, a ball valve, an automatic drainer, a sealing gasket and a wire mesh demister; the cooling water heat exchange assembly is installed on the compressed air inlet side of the cooler shell, and the chilled water heat exchange assembly is installed on the compressed air outlet side of the cooler shell, and sealing and fixing are achieved by sealing gaskets and fastening bolts.
[0005] Furthermore, a guide plate is provided in the middle of the cooler shell, and a wire mesh demister is provided on each side thereof. The wire mesh demister is fixed on the guide plate. A bottom drain port is provided at the center of the cooler shell, and an automatic drainer is connected to the drain port through a ball valve.
[0006] Furthermore, the heat exchange assembly is composed of a heat exchange tube, a guide plate and an end cover. The heat exchange tube and the end cover are fixed as a whole. The inlet and outlet interfaces of the end cover are respectively connected to the two ends of the heat exchange tube. The inlet and outlet of the end cover are separated by a partition.
[0007] Technical effects and advantages of the utility model:
[0008] 1. The utility model has a compact structure, small size, low operating cost, and one precooler can achieve the function of two-stage cooling;
[0009] 2. The utility model uses a wire mesh demister to collect water foam in the compressed air and accumulate it at the drain outlet, making it convenient to discharge condensed water;
[0010] 3. The compressed air circulates easily in the structure of the utility model, the flow resistance is small, and the overall pressure loss is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the utility model;
[0012] In the figure: 1 cooler shell, 2 cooling water heat exchange assembly, 3 chilled water heat exchange assembly, 4 ball valve, 5 automatic drain, 6 sealing gasket, 7 fastening bolts, 8 guide plate, 9 wire mesh demister.
[0013] Figure 2 is a structural schematic diagram of a heat exchange assembly;
[0014] In the figure: 8 guide plate, 10 end cover, 11 heat exchange tube;
[0015] Figure 3 A schematic diagram of the structure of an existing filter. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] like Figure 1 A specific implementation of a combined compressed air filter of the utility model is shown: it includes a cooler housing 1, a cooling water heat exchange assembly 2, a chilled water heat exchange assembly 3, a ball valve 4, an automatic drainer 5 and a wire mesh demister 9; the cooling water heat exchange assembly 2 is installed on the compressed air inlet side of the cooler housing 1, and the chilled water heat exchange assembly 3 is installed on the compressed air outlet side of the cooler housing 1, and sealing and fixing are achieved by a sealing gasket 6 and a fastening bolt 7.
[0018] A guide plate 8 is welded and fixed on the central upper part of the cooler shell 1. The wire mesh demisters 9 are respectively fastened and installed on both sides of the guide plate 8. A bottom drain port is provided at the center of the cooler shell 1, and the automatic drainer 5 is connected to the drain port through a ball valve 4.
[0019] The cooling water heat exchange assembly 2 and the chilled water heat exchange assembly 3 are composed of a heat exchange tube 11, a guide plate 8 and an end cover 10. The heat exchange tube 11 and the end cover 10 are welded or fixed into one body by expansion and compression. The inlet and outlet interfaces of the end cover 10 are respectively connected to the two ends of the heat exchange tube 11, and a partition is provided between the inlet and outlet of the end cover 10. The heat exchange tube 11 can be made of stainless steel or brass, which can ensure good mechanical strength while ensuring corrosion resistance of the heat exchange tube.
[0020] The cooling water heat exchange assembly 2 is connected to the cooling water system, and the chilled water heat exchange assembly 3 is connected to the chilled water system. The compressed air enters the cooling water heat exchange assembly 2 from the cooler inlet, and a large amount of condensed water is precipitated after cooling. The liquid water will be blocked by the wire mesh when passing through the wire mesh demister 9. After accumulation, it flows into the automatic drainer 5 through the ball valve 4 at the drain outlet to achieve the separation of the condensed water; the compressed air after the gas-water separation enters the chilled water heat exchange assembly 3 again, continues to cool down, and flows out from the compressed air outlet after two-stage cooling.
[0021] The applicant further declares that the present invention illustrates the implementation method and device structure of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above methods and structures to be implemented. Those skilled in the art should understand that any improvement to the present invention, equivalent replacement of the implementation method selected by the present invention, addition of steps, selection of specific methods, etc., all fall within the scope of protection and disclosure of the present invention.
[0022] The present invention is not limited to the above-mentioned embodiments, and all methods that use structures and methods similar to the present invention to achieve the purpose of the present invention are within the protection scope of the present invention.
Claims
1. A combined compressed air precooler, comprising a cooler housing (1), a cooling water heat exchange assembly (2) and a chilled water heat exchange assembly (3), characterized in that: It also includes a ball valve (4), an automatic drainer (5), a sealing gasket (6), and a wire mesh demister (9); the cooling water heat exchange assembly (2) is installed on the compressed air inlet side of the cooler housing (1), and the chilled water heat exchange assembly (3) is installed on the compressed air outlet side of the cooler housing (1), and sealing and fixing are achieved by means of the sealing gasket (6) and the fastening bolts (7).
2. The combined compressed air precooler according to claim 1, characterized in that: A guide plate (8) is provided in the middle of the cooler housing (1), and a wire mesh demister (9) is provided on both sides of the guide plate. The wire mesh demister (9) is fixed on the guide plate (8). A bottom drain port is provided at the center of the cooler housing (1), and an automatic drainer (5) is connected to the drain port via a ball valve (4).
3. The combined compressed air precooler according to claim 1 or claim 2, characterized in that: The cooling water heat exchange assembly (2) and the chilled water heat exchange assembly (3) are composed of a heat exchange tube (11), a guide plate (8) and an end cover (10). The heat exchange tube (11) and the end cover (10) are sealed and fixed. The inlet and outlet of the end cover (10) are respectively connected to the two ends of the heat exchange tube (11). The inlet and outlet of the end cover (10) are separated by a partition.