CN102536821A

CN102536821A - Semi-closed screw refrigerating compressor for ammonia

Info

Publication number: CN102536821A
Application number: CN2012100486716A
Authority: CN
Inventors: 袁君
Original assignee: DALIAN EAST REFRIGERATION EQUIPMENT CO LTD
Current assignee: DALIAN EAST REFRIGERATION EQUIPMENT CO LTD
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2012-07-04

Abstract

The invention discloses a semi-closed screw refrigerating compressor for ammonia. The semi-closed screw refrigerating compressor comprises a rear end seat, a female rotor, a male rotor, a machine body, a front end seat, a magnetic sensor and a motor, wherein the magnetic sensor comprises an outer rotor, an isolation sleeve, an outer magnetic body, an inner magnetic body and an inner rotor; the rear end seat is connected with the machine body; the female rotor and the male rotor are mounted in the machine body in an engaging manner; the machine body is connected with the front end seat; the inner rotor of the magnetic sensor is connected with the male rotor; the outer rotor of the magnetic sensor is connected with a rotor of the motor; the isolation sleeve is mounted between the outer rotor and the inner rotor; the outer magnetic body is mounted on an inner circumferential part of the outer rotor; and the inner magnetic body is mounted on an outer circumferential part of the inner rotor. According to the semi-closed screw refrigerating compressor for ammonia disclosed by the invention, a torque is transmitted by magnetic transmission, which is realized by using a characteristic of magnetic ultra-torque effect; and a dynamic seal of a main shaft transmission torque can be converted into a static seal to realize zero leakage power transmission.

Description

Ammonia is used semiclosed Spiral Lobe Refrigeration Compressor

Technical field

The present invention relates to a kind of ammonia and use semiclosed Spiral Lobe Refrigeration Compressor.

Background technique

In the existing technology, compressor roughly can be divided into displacement type compressor, velocity profile compressor and opened compressor, in displacement type compressor; The gas of certain volume is inhaled the people in cylinder earlier, and its volume is forced and dwindles in cylinder then, and pressure raises; Gas is discharged from cylinder with just being forced when reaching certain pressure; It is thus clear that the suction and discharge process of displacement type compressor is intermittently to carry out, it flows not is continous-stable; In the velocity profile compressor; The growth of gas pressure is that the speed by gas is transformed, and it is at a high speed certain that gas is obtained, and then the kinetic energy of gas is converted into pressure can; It is thus clear that; Compression process in the velocity profile compressor can carry out continuously, and it flows is stable, and the velocity profile compressor of using in the refrigeration plant mainly is a centrifugal refigerating compressor; Opened compressor and prime mover are divided into two bodies, and two machine main shafts lean on transmission device to connect transmission, and the compressor main shaft overhanging end is provided with gland seal device; With anti-leak, if prime mover is a motor, because of it does not contact the requirement that need not to possess anti-refrigeration agent and oil resistant with refrigeration agent with lubricant oil; Therefore; It is in the refrigeration system of working medium that opened compressor can be used for ammonia, and the seal form of the compressor of above form is motive sealing, and this sealing usually leakage phenomenon can occur.

Summary of the invention

The purpose of this invention is to provide a kind of ammonia that does not have sealing, zero leakage of realizing and use semiclosed Spiral Lobe Refrigeration Compressor.

The present invention for realizing the technological scheme that above-mentioned purpose adopted is: a kind of ammonia is used semiclosed Spiral Lobe Refrigeration Compressor; Comprise rear end seat (1), female rotor (2), male rotor (3), body (4), front end seat (5), magnetometric sensor (6), outer cover (7) and motor (8); Said magnetometric sensor (6) comprises external rotor (61), separation sleeve (62), outer magnet (63), inner magnet (64) and internal rotor (65); Rear end seat (1) is connected with body (4); Female rotor (2) and male rotor (3) engagement are installed in the body (4); Body (4) is connected with front end seat (5), and front end seat (5) is connected with motor (8) through outer cover (7), and the internal rotor (65) of magnetometric sensor (6) is connected with male rotor (3); The external rotor (61) of magnetometric sensor (6) is connected with the rotor (82) of motor (8); Separation sleeve (62) is installed between external rotor (61) and the internal rotor (65), and outer magnet (63) is installed in the inner circumferential portion of external rotor (61), and inner magnet (64) is installed in the excircle part of internal rotor (65).

Said motor (8) comprises front end seat (81), rotor (82), stator (83), overcoat (84) and rear end seat (85); Said front end seat (81) and rear end seat (85) are installed in the two ends of motor shaft; Stator (83) is installed in the overcoat (84), and rotor (82) is installed between front end seat (81) and the rear end seat (85).

Be provided with outer cover (7) between said front end seat (5) and the motor (8), said outer cover (7) covers on the magnetometric sensor (6).

Said separation sleeve (62) forms Seal cage with internal rotor (65) and male rotor (3) sealing.

Said internal rotor (65) is connected with male rotor (3) through key.

Said external rotor (61) is connected with the rotor (82) of motor (8) through key.

A kind of ammonia of the present invention is used semiclosed Spiral Lobe Refrigeration Compressor, and the magnetic drives carry-over moment utilizes the ultra square action characteristic of magnetic force to realize; The motive sealing that can transform the main shaft transmitting torque is a static seal, realizes the zero leakage transmission of power, can avoid the dither transmission; Realize the balance movement of work mechanism, can realize the operating overload protection of work mechanism, compare with rigid coupling; Install, dismounting, debugging, maintenance be all more convenient, but environment purification, pollution abatement.

Description of drawings

Fig. 1 is the structural representation of a kind of ammonia of the present invention with semiclosed Spiral Lobe Refrigeration Compressor.

Fig. 2 is the structural representation of a kind of ammonia of the present invention with semiclosed Spiral Lobe Refrigeration Compressor magnetic driver.

Among the figure: 1, rear end seat; 2, female rotor; 3, male rotor; 4, body; 5, front end seat; 6, magnetometric sensor; 7, outer cover; 8, motor; 61, external rotor; 62, separation sleeve; 63, outer magnet; 64, inner magnet; 65, internal rotor; 81, front end seat; 82, rotor; 83, stator; 84, overcoat; 85, rear end seat.

Embodiment

As depicted in figs. 1 and 2, ammonia is used semiclosed Spiral Lobe Refrigeration Compressor, comprises rear end seat 1, female rotor 2, male rotor 3, body 4, front end seat 5, magnetometric sensor 6, outer cover 7 and motor 8, and magnetometric sensor 6 comprises external rotor 61, separation sleeve 62, outer magnet 63, inner magnet 64 and internal rotor 65, and rear end seat 1 is connected with body 4; 3 engagements are installed in the body 4 female rotor 2 with male rotor, and body 4 is connected with front end seat 5, and front end seat 5 is connected with motor 8 through outer cover 7, and magnetometric sensor 6 is arranged in the outer cover 7, and the internal rotor 65 of magnetometric sensor 6 is connected with male rotor 3; The external rotor 61 of magnetometric sensor 6 is connected with the rotor 82 of motor 8, and separation sleeve 62 is installed between external rotor 61 and the internal rotor 65, and outer magnet 63 is installed in the inner circumferential portion of external rotor 61, and inner magnet 64 is installed in the excircle part of internal rotor 65, and motor 8 comprises front end seat 81, rotor 82, stator 83, overcoat 84 and rear end seat 85; Front end seat 81 and rear end seat 85 are installed in the two ends of motor shaft, and stator 83 is installed in the overcoat 84, and rotor 82 is installed between front end seat 81 and the rear end seat 85, and ammonia of the present invention is with semiclosed Spiral Lobe Refrigeration Compressor employing magnetic driver, and the power of prime mover is passed to the interior magnet assembly on the working shaft through the outer magnet assembly on it; Interior magnet assembly and outer magnet assembly are separated by separation sleeve, and working shaft need not stretch out the space that institute will seal, and has cancelled motive sealing, thereby realize that nothing seals, zero leakage; Magnetic driver is selected rare earth permanent-magnetic material for use, utilize it high energy product, high-coercive force characteristic the magnet dense arrangement of opposed polarity together, the permanent magnet magnetic force driver is formed " combination push-and-pull magnetic circuit " structure by internal rotor and external rotor; Rotary magnet is used motor driving outside vacuum chamber, vacuum-chamber wall selects for use nonmagnetic body material (magnetism-free stainless steel, aluminum alloy, carbon fiber reinforce plastic etc.) to process separation sleeve, and change is sealed into static seal; Therefore, fundamentally eliminated the leakage that the rotatingshaft sealing part produces, magnetic drives is exactly the mode through magnetic field N S utmost point coupling interaction transferring power; Magnetic driver comprises external rotor, internal rotor, separation sleeve and bearing arrangement, and wherein, separation sleeve and bearing arrangement are mainly used in the structure of magnetic drives sealing, loads onto magnet respectively in the excircle part of internal rotor and the inner circumferential portion of external rotor; Magnet is the even number utmost point, according to NS interleaved mode circumferential arrangement, with the magnet working surface alignment of inner and outer rotors, i.e. coupling automatically; Certain air gap is arranged between internal rotor and the external rotor, be used for isolating initiatively and driven member, between internal rotor and external rotor, a separation sleeve is installed; Can internal rotor or external rotor be closed, moment of torsion still can transmit, the principle that Here it is utilizes magnetic drives to seal, and the magnetic drives structure is transformed into static seal with motive sealing; This also is the great advantage of magnetic drives, and separation sleeve is generally processed by metallic material from the consideration of intensity, because separation sleeve is worked in the high speed alternating magnetic field; Therefore produce serious " generating " effect, i.e. eddy current loss, the electric conductivity of material is good more, and sectional area is big more; Rotating speed is high more, and eddy current loss is just big more, and therefore, separation sleeve selects the specific resistance of nonferromagnetic than higher material as far as possible; Ammonia of the present invention is used semiclosed Spiral Lobe Refrigeration Compressor, and the magnetic drives carry-over moment utilizes the ultra square action characteristic of magnetic force to realize that the motive sealing that can transform the main shaft transmitting torque is a static seal; Realize the zero leakage transmission of power, can avoid the dither transmission, realize the balance movement of work mechanism, can realize the operating overload protection of work mechanism; Compare with rigid coupling, install, dismounting, debugging, maintenance be all more convenient, but environment purification, pollution abatement.

Claims

1. an ammonia is used semiclosed Spiral Lobe Refrigeration Compressor; It is characterized in that: comprise rear end seat (1), female rotor (2), male rotor (3), body (4), front end seat (5), magnetometric sensor (6) and motor (8); Said magnetometric sensor (6) comprises external rotor (61), separation sleeve (62), outer magnet (63), inner magnet (64) and internal rotor (65); Rear end seat (1) is connected with body (4); Female rotor (2) and male rotor (3) engagement are installed in the body (4), and body (4) is connected with front end seat (5), and the internal rotor (65) of magnetometric sensor (6) is connected with male rotor (3); The external rotor (61) of magnetometric sensor (6) is connected with the rotor (82) of motor (8); Separation sleeve (62) is installed between external rotor (61) and the internal rotor (65), and outer magnet (63) is installed in the inner circumferential portion of external rotor (61), and inner magnet (64) is installed in the excircle part of internal rotor (65).

2. a kind of ammonia according to claim 1 is used semiclosed Spiral Lobe Refrigeration Compressor; It is characterized in that: said motor (8) comprises front end seat (81), rotor (82), stator (83), overcoat (84) and rear end seat (85); Said front end seat (81) and rear end seat (85) are installed in the two ends of motor shaft; Stator (83) is installed in the overcoat (84), and rotor (82) is installed between front end seat (81) and the rear end seat (85).

3. a kind of ammonia according to claim 1 is used semiclosed Spiral Lobe Refrigeration Compressor, it is characterized in that: be provided with outer cover (7) between said front end seat (5) and the motor (8), said outer cover (7) covers on the magnetometric sensor (6).

4. a kind of ammonia according to claim 1 is used semiclosed Spiral Lobe Refrigeration Compressor, it is characterized in that: said separation sleeve (62) forms Seal cage with internal rotor (65) and male rotor (3) sealing.

5. a kind of ammonia according to claim 1 is used semiclosed Spiral Lobe Refrigeration Compressor, it is characterized in that: said internal rotor (65) is connected with male rotor (3) through key.

6. a kind of ammonia according to claim 1 is used semiclosed Spiral Lobe Refrigeration Compressor, it is characterized in that: said external rotor (61) is connected with the rotor (82) of motor (8) through key.