Compressor volute structure with cooling runner

Abstract

The utility model provides a compressor volute structure with a cooling flow channel, which comprises a volute main body and a volute wall thickness connected to the inner side of the volute main body, and a volute airflow channel communicated with the volute wall thickness is arranged in the volute main body. Cooling channels which are communicated with each other and used for flowing of cooling media are arranged in the wall of the volute wall thickness and the wall of the volute body, a first medium opening communicated with one end of each cooling channel is formed in the outer wall of the volute body, and a second medium opening communicated with the other end of each cooling channel is formed in the outer wall of the outlet end of the volute wall thickness. According to the utility model, a compressed air medium can be effectively cooled, the heat exchange capacity and the heat exchange area when the compressed air medium enters cooling equipment are reduced, and the compression efficiency and the cooling efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a compressor volute structure with a cooling flow channel. Background Art

[0002] The compressor volute is a part used to collect compressed air medium. The function of the existing compressor volute is to collect the medium behind the impeller or diffuser and drain the medium to the cooler or delivery pipeline behind the compressor. In the process of collecting and draining, the cross-sectional area of ​​the volute gradually expands, so the flow rate of the compressed air medium gradually decreases, thereby converting part of the kinetic energy of the compressed air medium into pressure energy to achieve pressure expansion.

[0003] Since the medium compressed by the compressor generally has the characteristics of high temperature and high pressure, and most compressed air media generally only use their pressure energy at the end of use, the temperature of the compressed air medium must be reduced as soon as possible before reaching the end of use, so a dedicated cooling unit is required. For compressors with high pressure ratios, multi-stage compression is generally adopted. In order to improve the efficiency of the compressor, the compressed air medium must be cooled by a special cooler after coming out of the previous stage before entering the next stage of compression. Whether equipped with a dedicated cooling unit or a cooler, the compressed air medium is drained to the cooling unit or cooler for cooling after leaving the compressor volute. Due to the decrease in temperature during the drainage process, the cooling effect will be reduced, resulting in problems such as large overall unit size and high manufacturing costs. In addition, for the compressor, since the high-temperature compressed air medium needs to flow through the entire volute flow channel without cooling, this leads to a decrease in compression efficiency. Summary of the invention

[0004] The purpose of the utility model is to provide a compressor volute structure with a cooling flow channel. The utility model provides a cooling flow channel inside the compressor volute to solve the problem that the high-temperature compressed air medium after being compressed by the impeller cannot effectively cool down due to high-speed flow in the volute, resulting in reduced compression efficiency, thereby improving the compression efficiency and solving the problem that the cooling effect is poor due to the temperature drop in the process of the compressed air medium being diverted from the upper stage to the next stage or from the compressor outlet to the cooling unit.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] According to one aspect of the utility model, a compressor volute structure with a cooling flow channel is provided, including a main body, characterized in that: the compressor volute structure includes a volute main body and a volute wall thickness connected to the inner side of the volute main body, a volute airflow channel connected to the volute wall thickness is provided along the volute main body, cooling channels for the flow of cooling medium that are interconnected are provided in the wall of the volute wall thickness and the wall of the volute main body, a first medium port connected to one end of the cooling channel is provided on the outer wall at one end of the outlet of the volute wall thickness, and a second medium port connected to the other end of the cooling channel is provided on the outer wall of the volute main body.

[0007] Preferably, the above scheme has a volute tongue connected to the inner cavity of the volute airflow channel disposed below the inlet of the volute wall thickness, and the second medium port is disposed at the root of the volute wall thickness on the outer wall of the volute body close to the volute tongue.

[0008] The above solution is further preferred that the cooling channel is a spiral or snake-shaped structure arranged inside the volute wall thickness.

[0009] The above solution is further preferred that a first U-shaped support opening for connecting to a first joint is provided on an inner wall of an inlet of the first medium opening, and an external thread of the first joint is connected to an inner side of the first U-shaped support opening.

[0010] The above solution is further preferred that a first O-ring is sleeved on the first joint and is tightly attached to the first U-shaped supporting opening.

[0011] The above solution is further preferred that a second U-shaped support opening for connecting the second joint is provided on the inner wall of the inlet of the second medium opening, and the external thread of the second joint is connected to the inner side of the second U-shaped support opening.

[0012] The above solution is further preferred that a second O-ring is sleeved on the second joint and closely fits the second U-shaped supporting opening.

[0013] The utility model adopts the above technical solution and has the following significant effects:

[0014] 1. The utility model can provide a cooling pipe inside the compressor volute, and the cooling pipe acts as a cooling flow channel. By inputting the cooling medium into the cooling flow channel, the high-temperature compressed air medium compressed by the impeller can be effectively cooled when flowing through the volute, thereby reducing the heat exchange amount when the compressed air medium enters the cooling device, reducing the heat exchange area and manufacturing cost of the cooling device, and improving the compression efficiency and cooling efficiency.

[0015] 2. The cooling pipe of the utility model can be manufactured with different materials to adapt to various working conditions, and the manufacturing method is flexible. The cooling medium flowing through the cooling pipe can be reused as a renewable resource. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a compressor volute structure with a cooling flow channel of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of a compressor volute structure with a cooling flow channel of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the first medium port of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the first medium port of the utility model;

[0020] In the accompanying drawings, there are a volute body 1, a volute wall thickness 2, a volute airflow channel 3, a cooling channel 4, a first medium port 5, a second medium port 6, a volute tongue 7, a first joint 51, a first U-shaped support port 52, a first O-ring 53, a second joint 61, a second U-shaped support port 62, and a second O-ring 63. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details described in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0022] Embodiment 1, as Figure 1 Figure 2 As shown, a compressor volute structure with a cooling flow channel, the compressor volute structure includes a volute main body 1 and a volute wall thickness 2 connected to the inner side of the volute main body 1, a volute airflow channel 3 connected to the volute wall thickness 2 is provided along the volute main body 1, and cooling channels 4 for the flow of cooling medium that are interconnected are provided in the wall of the volute wall thickness 2 and the wall of the volute main body 1, a first medium port 5 connected to one end of the cooling channel 4 is provided on the outer wall at one end of the outlet of the volute wall thickness 2, and a second medium port 6 connected to the other end of the cooling channel 4 is provided on the outer wall of the volute main body 1; a volute tongue 7 connected to the inner cavity of the volute airflow channel 3 is provided below the inlet of the volute wall thickness 2, and the second medium port 6 is provided at the root of the volute wall thickness 2 on the outer wall of the volute main body 1 close to the volute tongue 7; the cooling channel 4 is a spiral or snake-shaped structure, and is provided inside the volute wall thickness 2.

[0023] By arranging a volute airflow channel 3 in the volute body 1, and at the same time arranging a cooling channel 4 extending along the volute airflow channel 3 inside the volute wall thickness 2, by connecting an external cooling device with the first medium port 5 or the second medium port 6, the cooling medium is sent into the cooling channel 4 through the first medium port 5 and flows out from the second medium port 6, or the cooling medium is sent into the cooling channel 4 from the second medium port 6 and flows out from the first medium port 5, so that the cooling medium circulates through the cooling channel 4. When the high-temperature compressed air medium compressed by the impeller flows through the volute airflow channel 3, the heat of the high-temperature compressed air medium is taken away to reduce its temperature by allowing the cooling medium in the cooling channel 4 to exchange heat with the high-temperature compressed air medium in the volute airflow channel 3, thereby solving the problem that the high-temperature compressed air medium compressed by the impeller cannot be effectively cooled when moving at high speed in the volute in the compressor volute, thereby improving the compression efficiency.

[0024] The cooling channel 4 is integrally formed with the volute body 1, or the cooling channel 4 is pre-arranged before manufacturing the volute body 1, and is joined together after the volute body 1 is manufactured, or the volute body 1 is reprocessed and the cooling channel 4 is laid therein; by setting up a variety of schemes to manufacture or assemble the cooling channel 4, the cooling requirements and working environments of different high-temperature compressed air media can be met, thereby improving the cooling effect.

[0025] Preferably, by arranging high-temperature compressed air medium and cooling medium with opposite flow directions in the volute air flow channel 3 and the cooling channel 4, the cooling effect of the cooling medium on the high-temperature compressed air medium is maximized, and the cooling efficiency is improved. By arranging a spiral or snake-shaped cooling channel 4 in the volute body 1, the contact area between the cooling channel 4 and the volute air flow channel 3 is increased to the greatest extent, allowing the cooling medium to contact the high-temperature compressed air medium to the greatest extent, thereby enhancing the cooling effect. At the same time, the cooling medium is selected from fluids such as oil, softened water, liquid nitrogen, and organic working fluids, and the heat energy absorbed by the cooling medium can be used as an effective energy source for secondary utilization.

[0026] Embodiment 2, as Figure 3 Figure 4 As shown, a first U-shaped support opening 52 for connecting to a first joint 51 is provided on the inner wall of the entrance of the first medium opening 5, and the outer thread of the first joint 51 is connected to the inner side of the first U-shaped support opening 52; a first O-ring 53 is sleeved on the first joint 51 and closely attached to the first U-shaped support opening 52; a second U-shaped support opening 62 for connecting to a second joint 61 is provided on the inner wall of the entrance of the second medium opening 6, and the outer thread of the second joint 61 is connected to the inner side of the second U-shaped support opening 62; a second O-ring 63 is sleeved on the second joint 61 and closely attached to the second U-shaped support opening 62;

[0027] By respectively arranging the first joint 51 and the second joint 61 on the first medium port 5 and the second medium port 6, it is convenient to introduce the cooling medium into the first medium port 5 and the second medium port 6, and the first U-shaped support port 52 and the second U-shaped support port 62 are respectively connected and arranged on the first joint 51 and the second joint 61, and at the same time, the first O-ring 53 and the second O-ring 63 on the first joint 51 and the second joint 61 can be formed. Through the above arrangement, the first joint 51 and the second joint 61 can be sealed and connected with the external pipeline for conveying the cooling medium, ensuring that the cooling medium can be stably input into the cooling pipeline 4, improving the sealing of the conveying cooling medium and ensuring the stability of cooling. At the same time, by arranging the threaded structure on the inner side wall of the first U-shaped support port 52 and the second U-shaped support port 62, the first U-shaped support port 52 and the second U-shaped support port 62 can be more stably connected with the external pipeline for conveying the cooling medium, so that the first U-shaped support port 52 and the second U-shaped support port 62 can be tightly combined with the external pipeline, improving the sealing and stability of the external pipeline and the first joint 51 and the second joint 61 when conveying the cooling medium.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A compressor volute structure with a cooling channel, characterized in that: The compressor volute structure comprises a volute body (1) and a volute wall (2) connected to the inner side of the volute body (1); a volute airflow channel (3) connected to the volute wall (2) is provided along the volute body (1); mutually connected cooling channels (4) for the flow of cooling medium are provided in the wall of the volute wall (2) and the wall of the volute body (1); a first medium port (5) connected to one end of the cooling channel is provided on the outer wall of the outlet end of the volute wall (2); and a second medium port (6) connected to the other end of the cooling channel (4) is provided on the outer wall of the volute body (1).

2. A compressor volute structure with a cooling channel according to claim 1, characterized in that: A volute tongue (7) connected to the inner cavity of the volute airflow channel (3) is arranged below the inlet of the volute wall thickness (2), and the second medium port (6) is arranged on the outer wall of the volute body (1) close to the volute tongue (7) at the root of the volute wall thickness (2).

3. The compressor volute structure of the cooling channel according to claim 1, characterized in that: The cooling channel (4) is a spiral or snake-shaped structure arranged inside the volute wall (2).

4. A compressor volute structure with a cooling channel according to claim 1, characterized in that: A first U-shaped support opening (52) for connecting to a first joint (51) is provided on the inner wall of the entrance of the first medium opening (5), and the external thread of the first joint (51) is connected to the inner side of the first U-shaped support opening (52).

5. A compressor volute structure with a cooling channel according to claim 4, characterized in that: A first O-ring (53) is sleeved on the first joint (51) and is tightly attached to the first U-shaped supporting opening (52).

6. The compressor volute structure with cooling flow channel according to claim 1, characterized in that: A second U-shaped support opening (62) for connecting to a second joint (61) is provided on the inner wall of the inlet of the second medium opening (6), and the external thread of the second joint (61) is connected to the inner side of the second U-shaped support opening (62).

7. A compressor volute structure with a cooling channel according to claim 6, characterized in that: A second O-ring (63) is sleeved on the second joint (61) and is tightly attached to the second U-shaped supporting opening (62).

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