Heat pump compressor inlet filtering and defoaming device

Abstract

The utility model discloses a heat pump compressor inlet filtering and defoaming device, which is characterized in that an inlet flange, a diffusion conical cylinder, a straight cylinder, a convergence conical cylinder and an outlet flange are sequentially spliced together and are connected through welding, the middle of the straight cylinder is of a split structure, the straight cylinder is connected through two halving flanges, a sealing gasket is arranged between the two halving flanges, and a sealing ring is arranged between the two halving flanges. A lower filtering and defoaming net and a lower baffle are installed on the lower front portion of the straight barrel, a drainage channel is arranged among the lower filtering and defoaming net, the lower baffle and the bottom of the straight barrel, meanwhile, an upper filtering and defoaming net and an upper baffle are installed on the upper rear portion of the straight barrel, and a collector is arranged at the position, under the upper filtering and defoaming net and the upper baffle, of the straight barrel. An angle of 45 degrees is formed between the axis of the cylinder of the collector and the center line of the straight cylinder, a drain outlet is welded to the bottom of the collector, a front flushing spray head and a rear flushing spray head are sequentially arranged on the diffusion conical cylinder and the straight cylinder respectively, and a support is welded to the front bottom of the straight cylinder in a supporting mode. Operation safety of the heat pump compressor and service life of the impeller are facilitated.

Description

Technical Field

[0001] The utility model relates to a heat pump distillation system, which is applicable to the filtration and cleaning of the working medium at the inlet of a heat pump compressor. Background Art

[0002] The chemical industry is a major energy consumer. How to reduce the energy consumption of distillation columns and make full use of low-temperature heat sources has become a common concern. Heat pump distillation is to pressurize and heat up the steam at the top of the distillation column so that it can be used as the heat source of the bottom reboiler, and recover the condensation latent heat of the steam at the top of the column. Therefore, heat pump distillation is a good energy-saving technology. Heat pump distillation uses the gas at the top of the column as the working medium. The gas at the top of the distillation column is compressed and heated up by a heat pump compressor and then enters the bottom reboiler. The condensation heat is released to reboil the kettle liquid. After the condensate is depressurized and cooled by a throttle valve, part of it is discharged as a product, and the other part is used as the reflux at the top of the distillation column. Since there are some impurities such as fine particles in the gas at the top of the distillation column entering, and a large amount of organic foam appears irregularly, when the gas working medium at the top of the column enters the heat pump compressor for pressurization and heating, the impeller is scoured and worn by fine particle impurities, and a large amount of organic foam also causes impeller cavitation, which is very unfavorable to the safe operation of the heat pump compressor and the service life of the impeller. Content of the Utility Model

[0003] The utility model aims to overcome the above technical defects and provide an inlet filtering and defoaming device that is beneficial to the safe operation of the heat pump compressor and the service life of the impeller.

[0004] To achieve the above object, the technical solution adopted by the utility model is: an inlet flange 1, a diffuser cone 3, a straight cylinder 7, a converging cone 10, and an outlet flange 11 are sequentially spliced together and connected by welding. The middle of the straight cylinder 7 is a split structure and is connected by two split flanges 5. A gasket 6 is arranged between the two split flanges 5. A lower filtering and defoaming net 17 and a lower baffle 14 are installed at the lower front part of the straight cylinder 7. A sewage discharge channel 15 is arranged between the lower filtering and defoaming net 17, the lower baffle 14 and the bottom of the straight cylinder 7. At the same time, an upper filtering and defoaming net 8 and an upper baffle 9 are installed at the upper rear part of the straight cylinder 7. A collector 12 is arranged at the position of the straight cylinder 7 directly below the upper filtering and defoaming net 8 and the upper baffle 9. The axis of the cylinder of the collector 12 forms a 45° angle with the center line of the straight cylinder 7. A sewage discharge port 13 is welded at the bottom of the collector 12. Front flushing nozzles 2 and rear flushing nozzles 4 are sequentially arranged on the diffuser cone 3 and the straight cylinder 7 respectively. A support 16 is welded and supported at the front bottom of the straight cylinder 7.

[0005] Adopting the above technical solution solves the problems of wear and cavitation of the impeller of the heat pump compressor, greatly improves the safety and reliability of the operation of the heat pump compressor, and prolongs the service life of the impeller. Description of the Drawings

[0006] Figure 1It is a schematic structural diagram of the inlet filtering and defoaming device of the heat pump compressor of the present utility model;

[0007] In the figure: 1. Inlet flange; 2. Front flushing nozzle; 3. Diffusion cone; 4. Rear flushing nozzle; 5. Middle flange; 6. Gasket; 7. Straight cylinder; 8. Upper filtering and defoaming net; 9. Upper baffle; 10. Converging cone; 11. Outlet flange; 12. Collector; 13. Drain port; 14. Lower baffle; 15. Drainage channel; 16. Support; 17. Lower filtering and defoaming net. Specific embodiments

[0008] The present utility model will be further described below in conjunction with the accompanying drawings, which is not a limitation of its protection scope.

[0009] Heat pump compressor inlet filtering and demisting device, characterized in that an inlet flange 1, a diffuser cone 3, a straight cylinder 7, a converging cone 10, and an outlet flange 11 are sequentially spliced together and connected by welding. The middle of the straight cylinder 7 is a split structure and is connected by two split flanges 5. A gasket 6 is arranged between the two split flanges 5. A lower filtering and demisting net 17 and a lower baffle 14 are installed at the lower front part of the straight cylinder 7. A sewage discharge channel 15 is arranged between the lower filtering and demisting net 17, the lower baffle 14 and the bottom of the straight cylinder 7. At the same time, an upper filtering and demisting net 8 and an upper baffle 9 are installed at the upper rear part of the straight cylinder 7. A collector 12 is arranged at the position of the straight cylinder 7 directly below the upper filtering and demisting net 8 and the upper baffle 9. The axis of the cylinder of the collector 12 forms a 45° angle with the center line of the straight cylinder 7. A sewage discharge port 13 is welded at the bottom of the collector 12. Front flushing nozzles 2 and rear flushing nozzles 4 are sequentially arranged on the diffuser cone 3 and the straight cylinder 7 respectively. A support 16 is welded to the front bottom of the straight cylinder 7. With the above scheme, the tiny particle impurities and organic foam existing in the gas working medium at the top of the heat pump rectification tower will be filtered and removed before entering the heat pump compressor. Through the connection of the diffuser cone 3, the straight cylinder 7, and the converging cone 10, the flow rate of the gas working medium at the top of the pump rectification tower entering the diffuser cone 3 is reduced, which is beneficial for the tiny particle impurities to sink by gravity and fall to the bottom of the straight cylinder 7. The lower baffle 14 and the upper baffle 9 form a staggered flow channel, making it easy for the organic foam to be adsorbed on the lower filtering and demisting net 17 and the upper filtering and demisting net 8. When the flow rate of the gas working medium at the top of the pump rectification tower is restored to the normal pipeline flow rate state through the converging cone 10, it smoothly enters the inlet of the heat pump compressor. Front flushing nozzles 2 and rear flushing nozzles 4 are sequentially arranged on the diffuser cone 3 and the straight cylinder 7 respectively. The tiny particle impurities sinking in the straight cylinder 7 can be flushed by high-pressure water, and the impurities can flow into the collector 12 under the action of high-pressure water and be discharged through the sewage discharge port 13. The middle of the straight cylinder 7 is a split structure and is connected by two split flanges 5. A gasket 6 is arranged between the two split flanges 5. It is supported and welded to the front bottom of the straight cylinder 7 by the support 16. The rear end of the split of the straight cylinder 7 can be directly disassembled, and this structure is more convenient for cleaning the inside of the device. The axis of the cylinder of the collector 12 forms a 45° angle with the center line of the straight cylinder 7, making the axis of the cylinder of the collector 12 in the same direction as the gas flow direction, so that the impurities and organic foam that have not been filtered will fall into the collector 12 and be intercepted under the influence of gravity and inertia.

[0010] Therefore, the present utility model is an inlet filtering and demisting device that is beneficial to the safe operation of the heat pump compressor and the service life of the impeller.

Claims

1. Heat pump compressor inlet filtering and defoaming device, characterized in that The inlet flange (1), the diffusion cone (3), the straight cylinder (7), the convergence cone (10), and the outlet flange (11) are sequentially spliced ​​together and connected by welding. The middle of the straight cylinder (7) is a split structure, which is connected by two middle-split flanges (5). A sealing gasket (6) is provided between the two middle-split flanges (5). A lower filtering and defoaming net (17) and a lower baffle (14) are installed at the lower front part of the straight cylinder (7). A sewage discharge channel (15) is provided between the lower filtering and defoaming net (17), the lower baffle (14) and the bottom of the straight cylinder (7). An upper filtering and defoaming net (8) and an upper baffle (9) are installed at the upper rear part of the straight cylinder (7), a collector (12) is arranged at the position of the straight cylinder (7) directly below the upper filtering and defoaming net (8) and the upper baffle (9), the axis of the cylinder of the collector (12) is 45 degrees with the center line of the straight cylinder (7), a sewage outlet (13) is welded at the bottom of the collector (12), a front flushing nozzle (2) and a rear flushing nozzle (4) are arranged on the diffusion cone cylinder (3) and the straight cylinder (7) respectively, and a support (16) is supported and welded at the front bottom of the straight cylinder (7).

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