CN211975388U

CN211975388U - Hydrogen circulating pump of easier drainage

Info

Publication number: CN211975388U
Application number: CN202020338024.9U
Authority: CN
Inventors: 邢子义; 王升科; 杨斌
Original assignee: Yantai Dongde Industrial Co Ltd
Current assignee: Yantai Dongde Industrial Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-11-20
Anticipated expiration: 2030-03-17

Abstract

The utility model provides a hydrogen circulating pump of easier drainage, includes motor, gear chamber and booster, the air inlet setting of booster keeps away from one side of motor at the booster top, and the gas vent setting of booster is close to one side of motor in the booster bottom, and is gaseous by the air inlet entering booster, and the output shaft of motor drives the initiative rotor through the gear in the gear chamber and rotates with passive rotor and carry out the pressure boost to gas, and is gaseous by the gas vent discharge. The air inlet sets up the one side of keeping away from the motor at the booster top, and the gas vent setting of booster is in one side that the booster bottom is close to the motor, and vapor can discharge in time at the water meeting that the compression intracavity formed, and dwell time is short in the compression intracavity, has avoided water to save in the compression intracavity, and fundamentally has eliminated and has produced ponding in the booster, has avoided leading to inside to deposit water because of the temperature is low excessively to freeze the rotor, has avoided appearing the motor stalling phenomenon, plays the guard action to the motor.

Description

Hydrogen circulating pump of easier drainage

The technical field is as follows:

the utility model relates to a hydrogen circulating pump of easier drainage.

Background art:

the fuel cell generates electric energy through electrochemical reaction between combustible substances (hydrogen) and oxygen in air, wherein after the fuel cell reaction, discharged gas contains a large amount of hydrogen, and if the hydrogen is directly discharged into the atmosphere, the hydrogen is on one hand wasted energy, on the other hand pollutes the environment, and on the other hand, the hydrogen is flammable and combustible, so that danger is generated. Therefore, it is necessary to recover and reuse such hydrogen. At present, these hydrogen-containing mixed gases are generally recycled to the fuel cell by a hydrogen circulation pump for recycling. The common hydrogen circulating pump has the following defects in work: the hydrogen-containing mixed gas discharged by the fuel cell can contain some water vapor, a certain amount of water can be accumulated in a rotor compression cavity of a hydrogen circulating pump after the hydrogen-containing mixed gas is used for a period of time, the structural design of an air inlet and an air outlet of the conventional hydrogen circulating pump is unreasonable, the accumulated water in the compression cavity is difficult to discharge, and the water vapor can be condensed into ice in winter, so that the rotor is frozen, a motor spindle rotates when the motor is started, and the rotor is not frozen to rotate, so that the motor is blocked and even damaged seriously.

The utility model has the following contents:

the utility model discloses a remedy prior art not enough, provide a hydrogen circulating pump of easier drainage, solved the inside problem of depositing water, drainage difficulty easily of hydrogen circulating pump in the past, avoided leading to inside to deposit water freezing rotor because of the temperature is low excessively, avoided appearing the motor stalling phenomenon, played the guard action to the motor.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

the utility model provides a hydrogen circulating pump of easier drainage, includes motor, gear chamber and booster, the air inlet setting of booster keeps away from one side of motor at the booster top, and the gas vent setting of booster is close to one side of motor in the booster bottom, and is gaseous by the air inlet entering booster, and the output shaft of motor drives the initiative rotor through the gear in the gear chamber and rotates with passive rotor and carry out the pressure boost to gas, and is gaseous by the gas vent discharge.

The shell of the supercharger is integrally cast.

An air inlet interface is installed on the outer side of the air inlet, and an exhaust interface is installed on the outer side of the exhaust port.

And a rotating shaft in the supercharger is made of stainless steel.

The number of the blades of the active rotor and the passive rotor is 2-8.

The material of the driving rotor and the driven rotor is 7 series aluminum alloy.

The driving rotor and the driven rotor are roots rotors with torsion angles.

The torsion angle is 0-200 degrees.

The motor drives the driving rotor and the driven rotor to rotate positively and negatively to break ice.

And the surfaces of the driving rotor and the driven rotor are provided with low-friction-coefficient wear-resistant coatings.

The utility model adopts the above technical scheme, have following advantage:

(1) the air inlet is arranged on one side, far away from the motor, of the top of the supercharger, the exhaust port of the supercharger is arranged on one side, close to the motor, of the bottom of the supercharger, water formed by water vapor in the compression cavity can be discharged in time, the retention time in the compression cavity is short, the water is prevented from accumulating in the compression cavity, the accumulated water generated in the supercharger is fundamentally eliminated, the phenomenon that water stored in the supercharger freezes the rotor due to over-low temperature is avoided, the phenomenon that the motor is locked up is avoided, and the motor is protected;

(2) even if a small amount of water freezes in the compression cavity, the motor can drive the Roots rotor to rotate forward and backward to break ice, and the Roots rotor structure is thick and strong and cannot damage the Roots rotor when breaking ice.

Description of the drawings:

fig. 1 is a schematic sectional view of the present invention.

In the figure, 1, a motor, 2, a gear chamber, 3, a supercharger, 4, an air inlet, 5, an air outlet, 6, a gear, 7, a driving rotor, 8, a driven rotor, 9, an air inlet interface, 10, an air outlet interface, 11 and a rotating shaft.

The specific implementation mode is as follows:

in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in figure 1, a hydrogen circulating pump of easier drainage, including motor 1, gear chamber 2 and booster 3, the air inlet 4 of booster 3 sets up the one side of keeping away from motor 1 at booster 3 top, and booster 3's gas vent 4 sets up the one side that is close to motor 1 in booster 3 bottom, and gas gets into the booster by air inlet 4, and the output shaft of motor drives the rotation of initiative rotor 7 and passive rotor 8 through gear 6 in the gear chamber 2 and pressurizes gas, and gas is discharged by gas vent 5. The vapor can discharge in time at the water meeting that the compression intracavity formed, and dwell time is short in the compression intracavity, has avoided water to collect together in the compression intracavity, and fundamentally has eliminated and has produced ponding in the booster 3, has avoided leading to inside to deposit water to freeze the rotor because of the temperature is low excessively, has avoided appearing motor 1 stalling phenomenon, plays the guard action to motor 1. The surfaces of the gear chamber 2 and the supercharger 3 are subjected to surface hardening treatment, and the hardness of the gear chamber and the supercharger is higher than that of an ice layer, so that the gear chamber and the supercharger cannot be scratched.

The shell of the supercharger 3 is integrally cast and formed, and has high strength and good sealing property.

An air inlet interface 9 is installed on the outer side of the air inlet 4, and an exhaust interface 10 is installed on the outer side of the exhaust port 5, so that the connection with an external pipeline is facilitated.

And a rotating shaft 11 in the supercharger 3 is made of stainless steel.

The number of the blades of the driving rotor 7 and the driven rotor 8 is 2-8.

The material of the driving rotor 7 and the driven rotor 8 is 7 series aluminum alloy. The 7-series aluminum alloy represents that 7075 mainly contains zinc element, also belongs to aviation series, is aluminum-magnesium-zinc-copper alloy, is heat-treatable alloy, belongs to super-hard aluminum alloy, has good wear resistance, and 7075 aluminum plate is stress-relieved, can not deform or warp after being processed, and all the extra-large and extra-thick 7075 aluminum plates can ensure no sand holes and impurities through ultrasonic detection, so that the 7075 aluminum plate has high heat conductivity, the forming time can be shortened, and the working efficiency is improved. The main characteristic is high hardness, 7075 is high hardness, high strength aluminum alloy, commonly used for manufacturing aircraft structures.

The driving rotor 7 and the driven rotor 8 are Roots rotors with torsion angles of 0-200 degrees, the Roots rotors are thick and strong and cannot be damaged in ice breaking, and the motor drives the driving rotor and the driven rotor to rotate forward and backward to break ice.

And the surfaces of the driving rotor 7 and the driven rotor 8 are provided with low-friction-coefficient wear-resistant coatings. The low-friction coefficient wear-resistant coating adopts ENKUN-5 spraying graphite antifriction coating, and has the effects that water is not easy to remain on the rotor, and ice has poor adhesive capacity on the rotor and is easy to fall off.

The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

1. The utility model provides a hydrogen circulating pump of easier drainage, includes motor, gear room and booster, its characterized in that: the air inlet of the supercharger is arranged on one side, away from the motor, of the top of the supercharger, the exhaust port of the supercharger is arranged on one side, close to the motor, of the bottom of the supercharger, air enters the supercharger from the air inlet, the output shaft of the motor drives the driving rotor and the driven rotor to rotate through the gears in the gear chambers to supercharge the air, and the air is exhausted from the exhaust port.

2. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: the shell of the supercharger is integrally cast.

3. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: an air inlet interface is installed on the outer side of the air inlet, and an exhaust interface is installed on the outer side of the exhaust port.

4. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: and a rotating shaft in the supercharger is made of stainless steel.

5. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: the number of the blades of the active rotor and the passive rotor is 2-8.

6. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: the material of the driving rotor and the driven rotor is 7 series aluminum alloy.

7. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: the driving rotor and the driven rotor are roots rotors with torsion angles.

8. A hydrogen circulation pump with easier water discharge according to claim 7, characterized in that: the torsion angle is 0-200 degrees.

9. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: the motor drives the driving rotor and the driven rotor to rotate positively and negatively to break ice.

10. A hydrogen circulation pump with easier water discharge according to claim 1, characterized in that: and the surfaces of the driving rotor and the driven rotor are provided with low-friction-coefficient wear-resistant coatings.