CN205154676U - Centrifugal vapor compression machine suitable for system is prepared to medical pure water - Google Patents

Abstract

The utility model discloses a centrifugal water vapor compressor suitable for a medical pure water production system, which adopts a water vapor centrifugal compressor installed on a base oil tank, a speed-increasing gear box and a motor, and the water vapor centrifugal compressor and booster The high-speed gearboxes are connected by a high-speed shaft, the speed-increasing gearbox is connected to one end of the low-speed shaft through a coupling, and the other end of the low-speed shaft is connected to the motor. The impeller of the water vapor centrifugal compressor is installed on the free end of the high-speed shaft with a single-stage cantilever There is also a pressure lubricating oil circuit between the oil tank and the speed-increasing gear box, and the water vapor centrifugal compressor, the speed-increasing gear box and the motor are all installed on the oil tank of the base. The utility model has the advantages of compact structure, beautiful appearance, convenient transportation and use. The gear transmission parts adopt pressure lubrication mode, so that the transmission parts of each part in the box can be fully lubricated and the heated lubricating oil can be pumped from the oil tank. Better cooling during circulation to the gearbox.

Description

A centrifugal water vapor compressor suitable for medical pure water production system

technical field

The utility model belongs to the professional field of power engineering fluid machinery, and relates to a centrifugal water vapor compressor suitable for a medical pure water production system.

Background technique

The new medical pure water production system adopts MVR technology, which is an energy-saving technology, which uses the secondary steam energy generated by itself to preheat raw materials, thereby reducing the demand for external energy.

At present, most of the medical pure water production process systems commonly used in China are single-machine 1-3T/h scale, and the expansion of scale is realized by parallel connection of units. The core component of the unit uses a gear pump to compress saturated water vapor. The efficiency of the gear pump is low, and at the same time, the requirements of the site for the parallel connection of multiple units are greatly improved. This type of technology research was carried out abroad earlier, and there are already process units that use centrifugal compressors as the compression part, but domestically no independent technology has been formed, only foreign overall technology has been adopted in the process system; the significant advantage of this type of unit is that it is a single unit The unit is large in scale and high in efficiency, which can reduce the energy consumption of the whole machine and save more energy. Therefore, it has great market potential. The reason why this type of unit has not yet formed mature technology and products in China is that its bottleneck lies in the manufacture of water vapor centrifugal compressors. The development of centrifugal water vapor compressors can not only realize the localization of new medical pure water production process systems, but also provide strong support for the extension of MVR technology to other fields in the future.

Utility model content

The purpose of the utility model is to provide a centrifugal water vapor compressor suitable for medical pure water production system to overcome the deficiencies of the prior art, and the utility model has higher efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions:

A centrifugal water vapor compressor suitable for a medical pure water production system, including a water vapor centrifugal compressor installed on a base oil tank, a speed-increasing gear box and a motor, and the space between the water vapor centrifugal compressor and the speed-increasing gear box The speed-increasing gearbox is connected to one end of the low-speed shaft through a coupling, and the other end of the low-speed shaft is connected to the motor. The single-stage cantilever of the impeller of the water vapor centrifugal compressor is installed on the free end of the high-speed shaft. The base oil tank and the speed-increasing gear There is also a pressure lubricating oil circuit between the tanks.

Further, the pressure lubricating oil circuit includes a main oil pump, an oil cooler and a filter connected in sequence through an oil return pipeline.

Furthermore, the main oil pump is connected with the low-speed shaft.

Further, an auxiliary oil pump connected in parallel with the main oil pump is also provided.

Further, the base oil tank is integrated with the unit base.

Further, the motor is a motor with a frequency conversion power of 160kW, and a temperature measurement junction box is installed on the motor.

Further, all required sealing structures adopt labyrinth seals.

Further, a fan is installed at the free end where the high-speed shaft is connected to the water vapor centrifugal compressor, and the lowest point of the casing of the fan is provided with a condensate discharge port.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model is a centrifugal water vapor compressor suitable for a medical pure water production system, which adopts a water vapor centrifugal compressor installed on a base oil tank, a speed-increasing gear box and a motor, a water vapor centrifugal compressor and a speed-increasing gear The gearboxes are connected by a high-speed shaft, the speed-increasing gearbox is connected to one end of the low-speed shaft through a coupling, and the other end of the low-speed shaft is connected to the motor. There is also a pressure lubricating oil circuit between the speed-up gearboxes, and the water vapor centrifugal compressor, speed-up gearbox and motor are all installed on the base oil tank, so that the structure is compact, the appearance is beautiful, and it is more convenient to carry and use. The transmission parts are lubricated by pressure, so that the transmission parts of each part in the box are fully lubricated, and at the same time, the heated lubricating oil can be better cooled during the circulation process from the oil tank to the gear box.

Furthermore, the main oil pump is installed at the rear end of the low-speed shaft of the gearbox, and uses the residual power of the gearbox to provide pressure lubrication for each component of the unit, which is easy to operate and low in manufacturing cost.

Furthermore, the sealing structure adopts a labyrinth seal, and the sealant is non-toxic, ensuring that the external air, oil and the sealing body do not pollute the working medium, and at the same time, the high-temperature water vapor can be effectively used to sterilize the sealing gap.

Furthermore, the base oil tank adopts the base oil tank integrated with the unit, which saves space to the greatest extent, has a beautiful appearance, and is easy to carry and use.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a left side view of Fig. 1 .

Among them, 1. Water vapor centrifugal compressor; 2. Condensation outlet; 3. Speed-up gearbox; 4. Coupling; 5. Motor; 6. Temperature measuring junction box; 7. Oil cooler; 8. Oil tank; 9. Filter; 10. Pressure lubricating oil circuit; 11. Main oil pump; 12. Auxiliary oil pump; 13. High-speed shaft; 14. Low-speed shaft.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, a centrifugal water vapor compressor suitable for a medical pure water production system includes a water vapor centrifugal compressor 1 installed on a base oil tank 8, a speed-increasing gearbox 3 and a motor 5, and the water vapor One end of centrifugal compressor 1 and speed-increasing gear box 3 is connected through high-speed shaft 13, the other end of speed-increasing gear box 3 is connected with one end of low-speed shaft 14 through coupling 4, and the other end of low-speed shaft 14 is connected with motor 5 and base oil tank 8 There is also a pressure lubricating oil circuit 10 between the speed-increasing gearbox 3, including the main oil pump 11, oil cooler 7 and filter 9 connected in sequence through the oil return pipeline, wherein the main oil pump 11 is connected with the low-speed shaft 14, and the remaining The power drives the main oil pump 11 to work, avoiding another motor drive; there is also an auxiliary oil pump 12 arranged in parallel with the main oil pump 11, and the auxiliary oil pump 12 is additionally driven by a motor. Before the water vapor centrifugal compressor 1 is started, the auxiliary oil pump 12 is first turned on Ensure that all transmission parts in the box are fully lubricated, and then start the compressor 1 after other start-up conditions are met. When the oil supply pressure of the main oil pump 11 reaches the specified value, the auxiliary oil pump 12 will stop in chain;

The impeller of the water vapor centrifugal compressor 1 is fully enclosed, and the medium is water vapor. The single-stage cantilever of the impeller is installed on one end of the high-speed shaft 13. It adopts horizontal air intake and upward exhaust, which is convenient for the connection and maintenance of the whole unit; the high-speed shaft 13 and A fan is installed at the free end of the water vapor centrifugal compressor 1. In order to avoid damage to the impeller, the lowest point of the fan shell is provided with a condensate discharge port 2 to completely drain the condensed water; a manual vent valve is installed on the outlet pipe of the compressor for Pressure relief when the unit is just turned on; all surfaces in contact with the medium are made of 316l stainless steel, which meets the requirements for the content of various elements such as carbon in medical pure water, and also takes into account the strength requirements of each component; the sealing structure adopts labyrinth seal, and the sealant is free Toxic, to ensure that the external air, oil and sealing body will not pollute the working medium, and at the same time, high temperature water vapor can be effectively used to sterilize the sealing gap. The casing is made of cast stainless steel, and the impeller is FV520B.

Among them, the gearbox 3 is a compact design, the highest quality high-speed shaft 13 ensures safe operation, and the maintenance-free high-speed shaft 13 has the best wetting characteristics;

The motor 5 is a motor with a variable frequency power of 160kW, and a temperature-measuring junction box 6 is installed on the bearing of the motor 5 for measuring and monitoring the temperature of the bearing of the motor 5 .

The oil tank 8 adopts the base oil tank integrated with the unit, which saves space to the greatest extent, has a beautiful appearance, and is easy to carry and use; the oil level detection hole is set in the oil tank 8, and an alarm will be issued when the oil level drops to the lowest level; the pressure lubricating oil circuit 10 Two heat exchangers are installed on the circulating pipeline as the oil cooler 7, the cooling water is supplied to the heat exchanger as the cooling medium, and a temperature control circuit is used to keep the oil temperature constant. An oil filter 9 is installed on the oil inlet pipeline to filter impurity particles in the hydraulic oil, control the cleanliness of the oil, and avoid wear and blockage of the hydraulic components in the pipeline.

The utility model is a centrifugal water vapor compressor suitable for medical pure water production system. Strict aerodynamic design and structural design are carried out in the early stage to ensure that the unit obtains the most optimized structure and efficiency. After the design and manufacture are completed, the water vapor The compressor products are used in the whole process system, various performance tests are carried out, and the collection and analysis of operation data are completed. The variable efficiency of the unit is higher than 82%, and the pressure ratio is higher than 1.25, which meets the requirements. It can meet the requirements of medical pure water production process system.

Claims (8)

1. one kind is applicable to the centrifugal water Pistonless compressor of medicinal water preparation system, it is characterized in that, comprise the water vapour centrifugal compressor (1) be arranged in base oil tank (8), step-up gear (3) and motor (5), be connected by high speed shaft (13) between water vapour centrifugal compressor (1) with step-up gear (3), step-up gear (3) is connected with lower velocity shaft (14) one end by coupling (4), lower velocity shaft (14) the other end is connected to motor (5), the impeller single-stage cantilever of water vapour centrifugal compressor (1) is arranged on high speed shaft (13) free end, pressure lubrication oil circuit (10) is also provided with between base oil tank (8) and step-up gear (3).

2. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 1, it is characterized in that, pressure lubrication oil circuit (10) comprises the main oil pump (11), oil cooler (7) and the filter (9) that are connected successively by return line.

3. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 2, it is characterized in that, wherein main oil pump (11) is connected with lower velocity shaft (14).

4. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 3, is characterized in that, is also provided with the auxiliary oil pump (12) in parallel with main oil pump (11).

5. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 1, is characterized in that, described base oil tank (8) and unit base are integrated.

6. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 1, it is characterized in that, the motor of frequency-converter power 160kW selected by motor (5), motor (5) is provided with temperature measuring junction box (6).

7. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 1, it is characterized in that, all sealing configurations that needs all adopt labyrinth sealing.

8. a kind of centrifugal water Pistonless compressor being applicable to medicinal water preparation system according to claim 1, it is characterized in that, high speed shaft (13) is connected free end with water vapour centrifugal compressor (1) and is provided with blower fan, and the minimum point of the shell of blower fan arranges condensate drain mouth (2).