Supplementary air and low-pressure-stage exhaust mixing structure for compressor

Abstract

The utility model relates to a structure for mixing supplemented air and low-pressure-stage exhaust in a compressor, and belongs to the technical field of compressors. The low-pressure-stage exhaust end comprises a low-pressure-stage exhaust end body provided with an exhaust channel, and is characterized by further comprising an air supply stop valve and an air supply filter, the low-pressure-stage exhaust end body is provided with an exhaust cavity and an air supply channel, the exhaust cavity is of a semicircular structure, the upper end of the air supply channel is communicated with an external air supply pipeline, and the lower end of the air supply channel is communicated with the air supply filter. The lower end of the air supply channel is communicated with the top of the exhaust cavity, the air supply stop valve is installed at the upper end of the air supply channel, and the air supply filter is installed at the lower end of the air supply channel. The exhaust channel is located on the lower half portion of the low-pressure-stage exhaust end body, an inlet of the exhaust channel is communicated with the exhaust side of the low-pressure-stage engine body, an outlet of the exhaust channel is communicated with the bottom of the exhaust cavity, and the exhaust cavity is communicated with the air suction side of the high-pressure-stage engine body. The compressor is reasonable in structural design, and the overall efficiency of the compressor can be improved.

Description

Technical Field

[0001] The utility model relates to a compressor flow channel structure, in particular to a structure for mixing supplementary air with low-pressure exhaust in a compressor, belongs to the technical field of compressors, and is mainly used in two-stage compression screw compressors. Background Art

[0002] Compressors are used to boost low-pressure gas to high-pressure gas. Two-stage compressors typically require supplemental air during operation to improve compression efficiency. However, the structural design of the supplemental air and low-pressure exhaust gas mixing in existing compressors is not rational, resulting in insufficient mixing of the supplemental air and low-pressure exhaust gas, which reduces the overall efficiency of the compressor. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a structure for mixing supplementary air with low-pressure exhaust gas in a compressor, which has a reasonable structural design and is conducive to improving the overall efficiency of the compressor.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the structure for mixing air supply and low-pressure stage exhaust in the compressor includes a low-pressure stage exhaust end body provided with an exhaust channel, and its structural characteristics are: it also includes an air supply stop valve and an air supply filter for filtering gas impurities in the air supply process, the low-pressure stage exhaust end body is provided with an exhaust chamber and an air supply channel, the exhaust chamber is a semicircular ring structure, the upper end of the air supply channel is connected to the external air supply pipeline, the lower end of the air supply channel is connected to the top of the exhaust chamber, the air supply stop valve is installed at the upper end of the air supply channel, and the air supply filter is installed at the lower end of the air supply channel; the exhaust channel is located in the lower half of the low-pressure stage exhaust end body, the inlet of the exhaust channel is connected to the exhaust side of the low-pressure stage body, the outlet of the exhaust channel is connected to the bottom of the exhaust chamber, and the exhaust chamber is connected to the suction side of the high-pressure stage body.

[0005] Preferably, the exhaust passage inlet of the low-pressure exhaust end body of the present invention is connected to the exhaust side of the low-pressure stage body by a flange. Using a flange to connect the low-pressure stage exhaust end body to the low-pressure stage body reduces processing and assembly difficulties, improves the utilization of human resources and time costs, and reduces production complexity.

[0006] Preferably, the air supply channel of the present invention has a vertical structure.

[0007] Compared with the prior art, the utility model has the following advantages and effects: the structural design is reasonable, and the supplementary air and the low-pressure exhaust gas can be fully mixed in the exhaust chamber of the low-pressure exhaust end body, the supplementary air enters the exhaust chamber through the supplementary air channel, and the low-pressure exhaust gas after the first-stage compression enters the exhaust chamber through the exhaust channel, and the low-pressure exhaust gas and the supplementary air collide in the exhaust chamber of the low-pressure exhaust end body and then disperse, thereby improving the mixing efficiency.

[0008] Filling the air in the middle of a two-stage compressor can improve the efficiency of the compressor, ensure that the fill air and the low-pressure stage exhaust are fully mixed, ensure that the suction temperature of the high-pressure stage is more uniform, avoid additional energy loss caused by unstable suction temperature of the high-pressure stage, and help improve the efficiency of the compressor.

[0009] By replenishing the air, the exhaust temperature is reduced and the reliability of the compressor is improved. The replenishing air is fully mixed with the low-pressure exhaust gas, and the fluctuation of the exhaust temperature is reduced, which helps to reduce the exhaust temperature. Under high temperature or high load conditions, excessively high exhaust temperature may cause damage to the compressor or performance degradation. The replenishing air of the utility model is fully mixed with the low-pressure exhaust gas, which effectively prevents this from happening and improves the reliability and service life of the compressor. In addition, the replenishing air is fully mixed with the low-pressure exhaust gas, so that the temperature of the working fluid flowing through the motor is low and uniform, which reduces the temperature of the motor, helps to cool the motor evenly, and avoids local overheating of the motor, thereby improving the reliability of the motor and improving the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention and / or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments and / or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 This is a schematic diagram of the main structure of a structure for mixing supplementary air with low-pressure exhaust gas in a compressor according to an embodiment of the present utility model.

[0012] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the AA surface in the middle.

[0013] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the middle BB surface.

[0014] Figure 4 yes Figure 3The structural schematic diagram shows the flow directions of the gas to be compressed, the supplementary gas, and the gas after mixing them, wherein the cross-sectional position of the cross-sectional diagram does not cut out the exhaust channel located in the lower half of the low-pressure exhaust end body; however, those skilled in the art will be clear about the technical content of the gas after the first stage of compression entering the exhaust chamber through the exhaust channel through the drawings and text recorded in this application.

[0015] In the figure: 1- low-pressure stage exhaust end body; 2- air supply filter; 3- exhaust chamber; 4- air supply stop valve; 5- air supply channel; 6- low-pressure stage body. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0017] Example

[0018] See also Figures 1 to 4 The structure for mixing the supplementary air and the low-pressure exhaust gas in the compressor in this embodiment includes a supplementary air filter 2, a supplementary air stop valve 4, and a low-pressure exhaust end body 1 provided with an exhaust channel. Among them, the supplementary air filter 2 is used to filter gas impurities during the supplementary air process.

[0019] The low-pressure exhaust end body 1 in this embodiment is provided with an exhaust chamber 3 and an air supply channel 5. The exhaust chamber 3 is a semicircular ring structure, and the air supply channel 5 is a vertical structure. The upper end of the air supply channel 5 is connected to the external air supply pipeline, and the lower end of the air supply channel 5 is connected to the top of the exhaust chamber 3. The air supply stop valve 4 is installed at the upper end of the air supply channel 5, and the air supply filter 2 is installed at the lower end of the air supply channel 5.

[0020] The exhaust channel in this embodiment is located in the lower half of the low-pressure stage exhaust end body 1, the inlet of the exhaust channel is connected to the exhaust side of the low-pressure stage body 6, the outlet of the exhaust channel is connected to the bottom of the exhaust chamber 3, and the exhaust chamber 3 is connected to the intake side of the high-pressure stage body.

[0021] Typically, the side where the inlet of the exhaust channel in the low-pressure exhaust end body 1 is located and the side where the exhaust side in the low-pressure body 6 is located are connected by a flange, which helps to reduce the difficulty of processing and assembly, improve production efficiency and reduce production costs.

[0022] The operation process of the structure for mixing supplementary air with low-pressure exhaust gas in the compressor in this embodiment is as follows.

[0023] a. The compressor is powered on, the motor rotates, and drives the rotor to rotate.

[0024] b. The gaseous Freon enters the intake side of the low-pressure stage body 6, undergoes a first-stage compression, and enters the exhaust side of the low-pressure stage body 6. Then, it enters the exhaust chamber 3 of the low-pressure stage exhaust end body 1 through the exhaust channel. The supplementary gas is concentrated from the supplementary gas channel 5 through the supplementary gas filter 2 and enters the exhaust chamber 3. The low-pressure stage exhaust gas and the supplementary gas collide and mix in the exhaust chamber 3 to achieve a basically complete mixing state.

[0025] c. The fully mixed gas enters the intake side of the high-pressure stage body through the exhaust chamber 3. When the intake side of the high-pressure stage body inhales the gas, a very small amount of unevenly mixed gas will be mixed during the intake process.

[0026] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is merely an example of the structure of the utility model. Any equivalent changes or simple changes made based on the structure, features and principles described in the concept of the utility model patent are included in the scope of protection of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should fall within the scope of protection of the utility model.

Claims

1. A structure for mixing supplementary air with low-pressure exhaust gas in a compressor, comprising a low-pressure exhaust gas end body (1) provided with an exhaust gas passage, characterized in that: It also includes an air supply stop valve (4) and an air supply filter (2) for filtering gas impurities in the air supply process. The low-pressure stage exhaust end body (1) is provided with an exhaust chamber (3) and an air supply channel (5). The exhaust chamber (3) is a semicircular ring structure. The upper end of the air supply channel (5) is connected to the external air supply pipeline, and the lower end of the air supply channel (5) is connected to the top of the exhaust chamber (3). The air supply stop valve (4) is installed at the upper end of the air supply channel (5), and the air supply filter (2) is installed at the lower end of the air supply channel (5); the exhaust channel is located in the lower half of the low-pressure stage exhaust end body (1), the inlet of the exhaust channel is connected to the exhaust side of the low-pressure stage body (6), the outlet of the exhaust channel is connected to the bottom of the exhaust chamber (3), and the exhaust chamber (3) is connected to the intake side of the high-pressure stage body.

2. A structure for mixing supplementary air with low-pressure exhaust gas in a compressor according to claim 1, characterized in that: The side where the inlet of the exhaust passage in the low-pressure stage exhaust end body (1) is located and the side where the exhaust side in the low-pressure stage body (6) is located are connected via a flange.

3. The structure for mixing supplementary air with low-pressure exhaust gas in a compressor according to claim 1, characterized in that: The air supply channel (5) has a vertical structure.

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