CN215109492U

CN215109492U - Pressurization assembly used in air compressor system of fuel cell

Info

Publication number: CN215109492U
Application number: CN202120071216.2U
Authority: CN
Inventors: 刘一达
Original assignee: Zhejiang Zhibo Energy Technology Co ltd
Current assignee: Zhejiang Zhibo Energy Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-12-10
Anticipated expiration: 2031-01-12

Abstract

The utility model provides a pressure boost assembly for among fuel cell's air compressor machine system, includes the motor, and the left side of motor is equipped with the lobe pump, and the lobe pump passes through the flange to be connected with the front end housing, and the flange has an inside passage, and the left end of main shaft and the right-hand member end of the pivot of lobe pump all exist in inside passage to connect main shaft and pivot through the connecting piece, thereby realize transmitting the produced rotatory power of main shaft to the pivot. The beneficial effects of the utility model reside in that, form by motor and lobe pump design, have characteristics such as efficient, power density is high, the response is fast, the speed governing scope is wide, and make the drive power transmission of motor for the lobe pump through the connecting piece, can guarantee to have higher centering nature between main shaft and the pivot, increase transmission torque, can compensate main shaft and pivot because the skew that reasons such as deformation or thermal energy of during operation take place, it is stable to pass the power round pin simultaneously, the pivot can keep unanimous with main shaft speed.

Description

Pressurization assembly used in air compressor system of fuel cell

Technical Field

The utility model belongs to the technical field of fuel cell and specifically relates to a pressure boost assembly that is arranged in fuel cell's air compressor machine system.

Background

The industrial air compressor widely used at present can not meet the flow and pressure ratio required by a fuel cell, and the traditional industrial air compressor system has low overall efficiency and large volume and can not meet the requirements for vehicles, such as vibration resistance, salt mist resistance, protection grade and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve above-mentioned prior art's shortcoming, provide a pressure boost assembly that is arranged in fuel cell's air compressor machine system and is used for solving above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted: the pressurizing assembly for the air compressor system of the fuel cell comprises a motor, wherein the motor is provided with a shell, a front end cover for sealing the front end of the shell and a rear end cover for sealing the rear end of the shell, a stator is fixed in the shell, a rotor which freely rotates in a stator inner cavity and a main shaft which is fixed at the center of the rotor are inserted in the stator inner cavity, a roots pump is arranged on the left side of the motor and connected with the front end cover through a flange, the flange is provided with an internal passage, the left end head of the main shaft and the right end head of a rotating shaft of the roots pump are both arranged in the internal passage and connected with the main shaft and the rotating shaft through a connecting piece, and therefore the rotating power generated by the main shaft is transmitted to the rotating shaft.

Further perfect, the connecting piece has first connecting portion, second connecting portion and is used for connecting the third connecting portion of two, and first connecting portion are installed in the left end of main shaft, and the second connecting portion are installed in the right-hand member end of pivot.

Further perfect, first connecting portion include connecting block and first mount pad, and the slot has been seted up and the connecting block is inserted in the position department placed in the middle of the right-hand member terminal surface of first mount pad, and pass the left end of screw in main shaft behind the position placed in the middle of first mount pad, connecting block simultaneously through the bolt.

Further perfect, the second connecting portion include connector and second mount pad, and the jack has been seted up and supplies the connector to insert in the inside position department placed in the middle of second mount pad, and utilizes the nut to revolve in third connecting portion and avoid the second mount pad to deviate from the connector when being connected through with the third connecting portion.

Further perfecting, the third connecting portion include a plurality of biography power round pin, pass power round pin and use the centre of a circle of first mount pad or second mount pad as central annular array distribution, pass power round pin one end and insert in first mount pad and realize closely cooperating, the other end inserts in the second mount pad and through nut reinforcement connection.

Further perfect, the outside right-hand member terminal surface department of lobe pump has still seted up the mounting groove, and the lower surface of mounting groove has the rack, and the right-hand member end of pivot still overlaps and is equipped with through the spacing gear of second mount pad, gear and rack toothing cooperation.

Further perfection, still set up the water course of multichannel interval distribution in the casing.

Further perfecting, the rotor is also provided with permanent magnets, and the permanent magnets are arranged along the length direction of the rotor.

The utility model discloses profitable effect is:

the utility model discloses motor and lobe pump design form, have efficient, power density is high, the response is fast, characteristics such as speed governing scope is wide to make the drive power transmission of motor give the lobe pump through the connecting piece, can guarantee to have higher centering nature between main shaft and the pivot, increase transmission torque, can compensate main shaft and pivot because the skew that reasons such as deformation or thermal energy of during operation took place, it makes to pass power stably to pass the power round pin simultaneously, the pivot can keep unanimous with main shaft speed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the full-section structure of the present invention;

FIG. 3 is a schematic structural view of the connecting member of the present invention;

fig. 4 is a schematic structural diagram of a gear and a rack in the roots pump of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

with reference to the accompanying drawings: the pressurizing assembly for the air compressor system of the fuel cell comprises a motor 1, wherein the motor 1 is provided with a casing 11, a front end cover 11-a used for sealing the front end of the casing 11 and a rear end cover 11-b used for sealing the rear end of the casing 11, a stator 2, a rotor 3 inserted in an inner cavity of the stator 2 and freely rotating in the inner cavity of the stator 2 and a spindle 4 fixed in the center of the rotor 3 are fixed in the casing 11, a roots pump 5 is arranged on the left side of the motor 1, the roots pump 5 is connected with the front end cover 11-a through a flange 6, the flange 6 is provided with an internal channel 61, the left end head of the spindle 4 and the right end head of a rotating shaft 51 of the roots pump 5 are both arranged in the internal channel 61 and are connected with the spindle 4 and the rotating shaft 51 through a connecting piece 7, and therefore the rotary power generated by the spindle 4 is transmitted to the rotating shaft 51.

For the connecting piece 7, the main function of the connecting piece 7 is to connect the main shaft 4 and the rotating shaft 51, and after connecting the main shaft 4 and the rotating shaft 51, the rotating power generated by the main shaft 4 can be transmitted to the rotating shaft 51, so as to realize the rotation of the two blade-shaped rotors in the roots pump 5, the connecting piece 7 has a first connecting part 71, a second connecting part 72 and a third connecting part 73 for connecting the first connecting part 71 and the second connecting part 72, the first connecting part 71 is installed at the left end of the main shaft 4, the second connecting part 72 is installed at the right end of the rotating shaft 51, the division is clear, and the three parts all have corresponding connection relations, so as to realize the transmission of the rotating power generated by the main shaft 4 to the rotating shaft 51, and simultaneously can ensure higher alignment between the main shaft 4 and the rotating shaft 51, increase the transmission torque, and compensate the offset (including axial offset, axial offset and the like of the main shaft 4 and the rotating shaft 51 caused by deformation or thermal expansion during operation, Radial offset, angular offset, or complex offset) and shock-absorption.

Further perfected, the first connecting part 71 comprises a connecting block 71-a and a first mounting seat 71-b, a slot 71-b1 is arranged at the central position of the right end face of the first mounting seat 71-b and is used for inserting the connecting block 71-a, and the bolt 8 passes through the first mounting seat 71-b and the middle position of the connecting block 71-a at the same time and then is screwed into the left end head of the main shaft 4, which has two functions, on one hand, the bolt can be connected with the main shaft 4 and also can be connected with the third connecting part 73, a relatively sufficient coupling area can be provided for the third coupling portion 73, so that the rotational power generated by the main shaft 4 can be transmitted to the rotating shaft 51, the connection is convenient, the connecting block 71-a and the first mounting seat 71-b are adapter parts, and the connection can be realized by using the bolt 8 after assembly, so that the connection is convenient and quick; on the other hand, the end of the main shaft 4 does not need to be processed into the configuration of the adaptive slot 71-b1, so that the connection of the main shaft 4 and other components is not affected.

Further perfected, the second connecting portion 72 comprises a connector 72-a and a second mounting seat 72-b, a central position inside the second mounting seat 72-b is provided with a jack 72-b1 for the connector 72-a to insert, and the nut is screwed on the third connecting part 73 to prevent the second mounting seat 72-b from being separated from the connecting head 72-a when being connected with the third connecting part 73, which has two functions, on one hand, the nut can be connected with the rotating shaft 51 and the third connecting part 73, a relatively sufficient connection area can be provided for the third connection portion 73, so that the rotational power generated by the main shaft 4 can be received, the connection is convenient, the connector 72-a and the second mounting seat 72-b are adapter parts, and the connector 72-a is screwed on the rotating shaft 51 after assembly, so that the connection is convenient and quick; on the other hand, considering that the two vane rotors of the roots pump 5 are provided on the rotary shaft 51 and the vane rotors are provided along the length direction of the rotary shaft 51, the second mounting seat 72-b can also increase the usable length of the rotary shaft 51, and this is achieved in that the third connecting member 73 is connected without affecting the two vane rotors.

Further perfection is that the third connecting part 73 comprises a plurality of force transmission pins 73-a, the force transmission pins 73-a are distributed in an annular array by taking the circle center of the first mounting seat 71-b or the second mounting seat 72-b as the center, one ends of the force transmission pins 73-a are inserted into the first mounting seat 71-b and are in tight fit, the other ends of the force transmission pins 73-a are inserted into the second mounting seat 72-b and are connected through nuts in a reinforcing mode, the force transmission pins 73-a have the function of ensuring reliable force transmission between the first mounting seat 71-b and the second mounting seat 72-b, so that the rotating power generated by the spindle 4 is transmitted to the spindle 51, the force transmission is stable, and the spindle 51 can keep the speed consistent with that of the spindle 4.

In order to ensure the stable operation of the roots pump 5, the gear 52 is further arranged at the end face of the right end of the exterior of the roots pump 5, the gear 52 is mounted at the end head of the right end of the rotating shaft 51 and limited by the second mounting seat 72-b, the gear 52 is used for being meshed with the two lobed rotors of the roots pump 5, so that the two lobed rotors can be ensured to rotate along with the rotating shaft 51 when the rotating shaft 51 rotates, because gas can be taken away from the air suction port in the rotor rotation process, when the rotating shaft is moved to the moment that the rotating shaft is communicated with the air exhaust port nearby the air exhaust port, the pressure in the working volume suddenly rises due to the backflow of the gas with higher pressure, then the gas is conveyed to the air exhaust channel, and meanwhile, the two rotors work alternately in sequence. The two rotors do not contact with each other, and the sealing is realized by a tightly controlled gap between the two rotors, so that the discharged gas is not polluted by lubricating oil, and then the gas is thrown out from the exhaust port to supply gas for the fuel cell.

Further perfecting, still set up the water course 11-a of multichannel interval distribution in the casing 11, can realize the water-cooling to motor 1 through water course 11-a for the heat is taken out fast by mobile water liquid, thereby realizes rapid cooling, makes the working cycle of motor 1 long, and the loss is low.

Further perfection, rotor 3 still is equipped with permanent magnet 31, and permanent magnet 31 sets up along the length direction of rotor 3, and the magnetic pole of permanent magnet 31 is fixed, and according to the principle that like poles attract each other, the opposite poles repel each other of magnetic pole, the rotating magnetic field that produces can drive rotor 3 in stator 2 and rotate, finally reaches the rotational speed of rotor 3 and the rotational speed of the rotating magnetic pole that produces in stator 2 and equals.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a pressure boost assembly for among fuel cell's air compressor machine system, includes motor (1), motor (1) has casing (11), is used for front end housing (11-a) sealed with casing (11) front end and is used for rear end housing (11-b) sealed with casing (11) rear end, and casing (11) internal fixation has stator (2), alternates at stator (2) inner chamber and at stator (2) inner chamber free rotation's rotor (3) and fix main shaft (4) at rotor (3) center, its characterized in that: the left side of the motor (1) is provided with a roots pump (5), the roots pump (5) is connected with the front end cover (11-a) through a flange (6), the flange (6) is provided with an internal channel (61), the left end head of the main shaft (4) and the right end head of a rotating shaft (51) of the roots pump (5) are both arranged in the internal channel (61), and the main shaft (4) and the rotating shaft (51) are connected through a connecting piece (7), so that the rotary power generated by the main shaft (4) is transmitted to the rotating shaft (51).

2. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 1, wherein: the connecting piece (7) is provided with a first connecting portion (71), a second connecting portion (72) and a third connecting portion (73) used for connecting the first connecting portion and the second connecting portion, the first connecting portion (71) is installed at the left end head of the main shaft (4), and the second connecting portion (72) is installed at the right end head of the rotating shaft (51).

3. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 2, wherein: the first connecting portion (71) comprises a connecting block (71-a) and a first mounting seat (71-b), a slot (71-b 1) is formed in the middle position of the end face of the right end of the first mounting seat (71-b) and used for inserting the connecting block (71-a), and a bolt (8) penetrates through the first mounting seat (71-b) and the middle position of the connecting block (71-a) and then is screwed into the end head of the left end of the main shaft (4).

4. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 3, wherein: the second connecting portion (72) comprises a connecting head (72-a) and a second mounting seat (72-b), a jack (72-b 1) is formed in the middle position inside the second mounting seat (72-b) and is used for inserting the connecting head (72-a), and the second mounting seat (72-b) is prevented from being separated from the connecting head (72-a) by screwing a nut on the third connecting portion (73) when the second connecting portion (72-b) is connected with the third connecting portion (73).

5. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 4, wherein: the third connecting portion (73) comprises a plurality of force transmission pins (73-a), the force transmission pins (73-a) are distributed in an annular array with the circle center of the first mounting seat (71-b) or the second mounting seat (72-b) as the center, one end of each force transmission pin (73-a) is inserted into the first mounting seat (71-b) to achieve tight fit, and the other end of each force transmission pin (73-a) is inserted into the second mounting seat (72-b) to be connected in a reinforcing mode through nuts.

6. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 5, wherein: an installation groove (52) is further formed in the end face of the outer right end of the roots pump (5), a rack (52-a) is arranged on the lower surface of the installation groove (52), a gear (51-a) limited by the second installation seat (72-b) is further sleeved at the end head of the right end of the rotating shaft (51), and the gear (51-a) is meshed with the rack (52-a).

7. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 6, wherein: a plurality of water channels (11-a) which are distributed at intervals are also arranged in the shell (11).

8. The pressurization assembly for use in an air compressor system of a fuel cell according to claim 7, wherein: the rotor (3) is further provided with a permanent magnet (31), and the permanent magnet (31) is arranged along the length direction of the rotor (3).