CN210343689U - Roots type hydrogen circulating pump - Google Patents
Roots type hydrogen circulating pump Download PDFInfo
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- CN210343689U CN210343689U CN201921106039.6U CN201921106039U CN210343689U CN 210343689 U CN210343689 U CN 210343689U CN 201921106039 U CN201921106039 U CN 201921106039U CN 210343689 U CN210343689 U CN 210343689U
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Abstract
The utility model relates to a Roots type hydrogen circulating pump, which comprises a pump body, wherein a rotor chamber is arranged in the pump body, a driving rotor and a driven rotor are arranged in the rotor chamber, the driving rotor and the driven rotor are provided with Roots blades which are meshed with each other, and the pump body is provided with a gas outlet; the air inlet end cover is connected with the pump body to seal a rotor chamber in the pump body, and is provided with an air inlet so that only external air enters the rotor chamber through the air inlet; the driving rotating shaft of the driving rotor is directly connected with the motor. The utility model has the advantages of reasonable design, cancelled current transmission gear structure, the roots's rotor intermeshing of directly choosing for use self-lubricating structure is in order to realize the transmission, directly has saved the gear room part in other words, has reduced the structure of the whole pump body greatly, and above all does not have the gear room and just meaning not need lubricating oil yet, and fundamentally has solved the problem of lubricating oil leakage, has avoided the fuel cell pile to pollute the problem of damage because of lubricating oil gets into in the hydrogen.
Description
Technical Field
The utility model relates to a roots type hydrogen circulating pump.
Background
The hydrogen circulating pump among the prior art mainly uses in the fuel cell field, wherein mainly adopt two leaf roots's formula and two claw formula hydrogen circulating pump, but the rotor of current two leaf roots's formula hydrogen circulating pump all carries out the transmission through synchronous gear, and synchronous gear needs lubricating so need design the gear room, join lubricating oil in the gear room, synchronous gear in the gear room passes through connecting axle and rotor shaft and links to each other, need design oil blanket device between gear room and the rotor room, but the hydrogen circulating pump still exists lubricating oil and permeates or the condition and the hidden danger of leaking from the gear room to the rotor room in the in-service use process, lubricating oil gets into behind the rotor room can with the hydrogen contact, lead to fuel cell's pile pollution.
SUMMERY OF THE UTILITY MODEL
The utility model provides a roots's formula hydrogen circulating pump, its structural design is reasonable, the current driving gear structure has been cancelled, the roots's rotor intermeshing of self-lubricating structure is directly chooseed for use in order to realize the transmission, because the gear structure has been cancelled, directly save the gear room part in other words, the structure of the whole pump body has been reduced greatly, make pump body structure compacter reasonable, and above all no gear room does not have the gear just meaning and does not need lubricating oil, fundamentally has solved the problem of lubricating oil leakage, avoided the fuel cell pile because of the problem that the lubricating oil got into the pollution damage in the hydrogen, the problem that exists among the prior art has been solved.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a roots-type hydrogen circulation pump comprising:
the pump comprises a pump body, wherein a rotor chamber is arranged in the pump body, a driving rotor and a driven rotor are arranged in the rotor chamber, the driving rotor and the driven rotor are provided with Roots blades which are meshed with each other, and the pump body is provided with an air outlet;
the air inlet end cover is connected with the pump body so as to seal the rotor chamber in the pump body, and is provided with an air inlet so that only external air enters the rotor chamber through the air inlet;
the driving rotating shaft of the driving rotor is directly connected with the motor, and the Roots blade of the driving rotor enables the Roots blade of the driven rotor meshed with the driving rotor to rotate along with the Roots blade under the driving of the motor;
and at least one of the two Roots blades of the driving rotor and the driven rotor is set to be a non-metal Roots blade.
Further, the number of the Roots blades of the driving rotor and the driven rotor is at least three.
Furthermore, the number of the Roots blades of the driving rotor and the driven rotor which are in a simultaneous meshing state is not less than two.
Furthermore, the driving rotating shaft of the driving rotor and the corresponding Roots blade, and the driven rotating shaft of the driven rotor and the corresponding Roots blade are all of an integrated structure.
Furthermore, the air inlet end cover is provided with two mounting grooves, a first bearing is arranged in each mounting groove, and the first bearings are respectively connected with the driving rotating shaft and the driven rotating shaft.
Further, air inlet end cover and end cover link to each other, end cover is suitable for the axial displacement of restriction first bearing, just end cover is equipped with the blow vent, the blow vent is linked together the setting with air inlet end cover's air inlet.
Furthermore, the sealing end cover is provided with reinforcing ribs to increase the structural strength and the heat dissipation performance of the sealing end cover.
Furthermore, the driving rotating shaft of the driving rotor is directly connected with the motor rotor inside the motor, and a second bearing connected with the driving rotating shaft is arranged on one side, close to the motor, of the pump body.
Furthermore, a driven rotating shaft of the driven rotor is connected with a third bearing arranged in the pump body.
Furthermore, the first bearing, the second bearing and the third bearing are self-lubricating ceramic bearings or self-lubricating stainless steel bearings or stainless steel ceramic hybrid bearings.
The utility model adopts the above structure beneficial effect be, its structural design is reasonable, current transmission gear structure has been cancelled, the roots's rotor intermeshing of self-lubricating structure is directly chooseed for use in order to realize the transmission, because the gear structure has been cancelled, directly save the gear room part in other words, the structure of the whole pump body has been reduced greatly, make pump body structure compacter reasonable, and above all no gear room does not have the gear just meaning and does not need lubricating oil, fundamentally has solved the problem of lubricating oil leakage, the problem of fuel cell pile pollution damage in because of lubricating oil gets into the hydrogen has been avoided.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.
Fig. 4 is a schematic view of the three-dimensional explosion structure of the present invention.
In the figure, 1, a pump body; 2. a rotor chamber; 3. a driving rotor; 301. a drive shaft; 4. a driven rotor; 401. A driven shaft; 5. an air outlet; 6. an air inlet end cover; 601. mounting grooves; 7. an air inlet; 8. a motor; 801. A motor rotor; 9. a first bearing; 10. sealing the end cap; 11. a vent; 12. reinforcing ribs; 13. a second bearing; 14. and a third bearing.
Detailed Description
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.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1-4, a roots type hydrogen circulation pump comprises a pump body 1, a rotor chamber 2 is arranged in the pump body 1, a driving rotor 3 and a driven rotor 4 are arranged in the rotor chamber 2, the driving rotor 3 and the driven rotor 4 are provided with roots blades which are meshed with each other, and the pump body 1 is provided with an air outlet 5; one side of the pump body 1 is provided with an air inlet end cover 6, the air inlet end cover 6 is suitable for sealing the rotor chamber 2 in the pump body 1, and the air inlet end cover 6 is provided with an air inlet 7 so that only external air enters the rotor chamber 2 through the air inlet 7; the driving rotating shaft 301 of the driving rotor 3 is directly connected with the motor 8, and the Roots blade of the driving rotor 3 drives the Roots blade of the driven rotor 4 meshed with the driving rotor to rotate along with the Roots blade under the driving of the motor 8; the rotor chamber 2 and the motor 8 are arranged without gears, and at least one of the two Roots blades of the driving rotor 3 and the driven rotor 4 is set as a non-metal Roots blade. The non-metal Roots blade has a self-lubricating function, is matched with the other Roots blade to realize the arrangement without lubricating oil, and no spark is generated between the two Roots blades in the high-speed rotary friction process, so that the combustion and explosion of hydrogen are avoided; in order to avoid the leakage problem of lubricating oil in the existing gear structure, the existing transmission gear structure is directly cancelled in the scheme, the driving rotor 3 and the driven rotor 4 realize transmission through self-intermeshing Roots blades, the driving rotating shaft 301 of the driving rotor 3 is directly connected with the motor 8, a gear chamber part is omitted, the structure of the whole pump body 1 is greatly reduced, the structure of the pump body 1 is more compact and reasonable, the problem of lubricating oil leakage is fundamentally solved, and the problem of pollution and damage of a fuel cell stack caused by the fact that the lubricating oil enters the hydrogen is avoided.
In the preferred embodiment, the number of roots lobes of the driving rotor 3 and the driven rotor 4 is at least three. Three or more are chooseed for use to the lobe quantity of initiative rotor 3 and driven rotor 4, can obtain higher gas transport efficiency, and the structure is more reliable and more stable, makes the engaged state between the lobe more reliable, and the rotation that initiative rotor 3 drove driven rotor 4 is more smooth.
In the preferred embodiment, the number of roots lobes of the driving rotor 3 and the driven rotor 4 in the simultaneous meshing state is not less than two. For guaranteeing the stability of transmission and the stress balance, through adjusting the torsion angle, make initiative rotor 3 and driven rotor 4 have two roots's blades at least simultaneously and be in the engaged state, guarantee to have abundant area of contact between the roots's blade, make the process that initiative rotor 3 drove driven rotor 4 more reliable and more stable.
In the preferred embodiment, the driving rotary shaft 301 and the corresponding roots lobes of the driving rotor 3, and the driven rotary shaft 401 and the corresponding roots lobes of the driven rotor 4 are all provided as an integral structure; at least one of the two roots blades of the driving rotor 3 and the driven rotor 4 is set as a non-metal roots blade, so that sparks cannot be generated after mutual friction, explosion prevention is fundamentally performed, and the driving rotating shaft 301 and the driven rotating shaft 401 of the driving rotor 3 and the driven rotor 4 are in metal models, so that the stability and the reliability of the rotating rotor 3 and the driven rotor 4 are ensured.
It is worth mentioning that engineering plastic models can be selected for the driving rotor 3 and the driven rotor 4, and specifically PEEK models can be selected.
In a preferred embodiment, the air inlet cover 6 is provided with two mounting grooves 601, a first bearing 9 is arranged in each mounting groove 601, and the two first bearings 9 are respectively connected with the driving rotating shaft 3 and the driven rotating shaft 4.
In a preferred embodiment, the inlet end cap 6 is connected to a seal end cap 10, the seal end cap 10 is adapted to limit axial displacement of the first bearing 9, and the seal end cap 10 is provided with a vent 11, the vent 11 being arranged in communication with an inlet 601 of the inlet end cap 6.
In a preferred embodiment, the hermetic end cap 10 is provided with reinforcing ribs 12 to increase the structural strength and heat dissipation properties of the hermetic end cap 10. The unique design of the reinforcing ribs 12 not only effectively improves the structural strength of the end cover 10, but also increases the heat dissipation performance of the end cover 10, so that heat generated by the driving rotor 3 and the driven rotor 4 in the high-speed rotation process can be rapidly dissipated, and the heat dissipation effect is ensured.
In the preferred embodiment, the driving shaft 301 of the driving rotor 3 is directly connected to the motor rotor 801 inside the motor 8, and the pump body 1 is provided with a second bearing 13 connected to the driving shaft 301 on the side close to the motor 8. The coaxial setting of initiative pivot 301 and the drive shaft of motor 8 of initiative rotor 3, make initiative pivot 301 support rotatoryly through one of them first bearing 9 and second bearing 13, driven pivot 401 supports rotatoryly through another first bearing 9 and third bearing 14, motor 8's motor end cover among the prior art has been saved, the shaft coupling between motor 8 drive shaft and the initiative pivot has been saved, the length of whole drive shaft has been shortened greatly, initiative pivot 301 directly links to each other with motor 8's motor rotor, be favorable to the steady rotation of initiative rotor, the adapting unit in the middle of having eliminated, connection length has been shortened, moreover, the steam generator is compact in structure, and is low in cost, and good in use effect.
In the preferred embodiment, the driven rotation shaft 401 of the driven rotor 4 is connected to the third bearing 14 provided in the pump body 1.
In a preferred embodiment, the first bearing 9, the second bearing 13 and the third bearing 14 are self-lubricating ceramic bearings or self-lubricating stainless steel bearings or stainless steel ceramic hybrid bearings. The ceramic bearing has the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetoelectric insulation resistance, oil-free self-lubrication, high rotating speed and the like. The material can be used in extremely severe environment and special working conditions, can be widely applied to the fields of aviation, aerospace, navigation, petroleum, chemical engineering, automobiles, electronic equipment, metallurgy, electric power, textile, pumps, medical instruments, scientific research, national defense and military and the like, and is a high-tech product applied to new materials. The ring and the rolling body of the ceramic bearing are made of all-ceramic materials, namely zirconium oxide (ZrO2), silicon nitride (Si3N4) and silicon carbide (Sic). The retainer is made of polytetrafluoroethylene, nylon 66, polyetherimide, zirconia, silicon nitride, stainless steel or special aviation aluminum, so that the application range of the ceramic bearing is expanded. Self-lubricating stainless steel bearing and stainless steel ceramic hybrid bearing have above-mentioned ceramic bearing's advantage equally, can satisfy the oil-free design theory in this scheme, and the structural model of first bearing 9, second bearing 13 and third bearing 14 does not do the restriction, can be under the prerequisite that satisfies mechanical requirement, have simultaneously and prevent hydrogen corrosion and hydrogen fragile effect.
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 (10)
1. A Roots-type hydrogen circulation pump, comprising:
the pump comprises a pump body, wherein a rotor chamber is arranged in the pump body, a driving rotor and a driven rotor are arranged in the rotor chamber, the driving rotor and the driven rotor are provided with Roots blades which are meshed with each other, and the pump body is provided with an air outlet;
the air inlet end cover is connected with the pump body so as to seal the rotor chamber in the pump body, and is provided with an air inlet so that only external air enters the rotor chamber through the air inlet;
the driving rotating shaft of the driving rotor is directly connected with the motor, and the Roots blade of the driving rotor enables the Roots blade of the driven rotor meshed with the driving rotor to rotate along with the Roots blade under the driving of the motor;
and at least one of the two Roots blades of the driving rotor and the driven rotor is set to be a non-metal Roots blade.
2. A roots-type hydrogen circulation pump according to claim 1, wherein the number of roots lobes of the driving rotor and the driven rotor is at least three.
3. A roots-type hydrogen circulation pump according to claim 2, wherein the number of roots lobes of the driving rotor and the driven rotor in a simultaneous meshing state is not less than two.
4. A roots-type hydrogen circulation pump according to claim 2 or 3, wherein the driving rotary shaft of the driving rotor and the corresponding roots 'lobes, and the driven rotary shaft of the driven rotor and the corresponding roots' lobes are provided as a one-piece structure.
5. A roots-type hydrogen circulation pump according to claim 1, wherein the inlet end cap is provided with two mounting grooves, each mounting groove being provided with a first bearing, the two first bearings being connected to the driving rotary shaft and the driven rotary shaft, respectively.
6. A Roots-type hydrogen circulation pump according to claim 5, wherein the inlet end cap is connected to a seal cap adapted to limit axial displacement of the first bearing, and the seal cap is provided with a vent hole arranged in communication with the inlet port of the inlet end cap.
7. The roots-type hydrogen circulation pump according to claim 6, wherein the end cap is provided with reinforcing ribs to increase structural strength and heat dissipation performance of the end cap.
8. The roots-type hydrogen circulation pump according to claim 5, wherein the driving shaft of the driving rotor is directly connected to the motor rotor inside the motor, and the pump body is provided with a second bearing connected to the driving shaft at a side close to the motor.
9. A roots-type hydrogen circulation pump according to claim 8, wherein the driven rotation shaft of the driven rotor is connected to a third bearing provided in the pump body.
10. A roots-type hydrogen circulation pump according to claim 9, wherein the first bearing, the second bearing and the third bearing are self-lubricating ceramic bearings or self-lubricating stainless steel bearings or stainless steel ceramic hybrid bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921106039.6U CN210343689U (en) | 2019-07-15 | 2019-07-15 | Roots type hydrogen circulating pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921106039.6U CN210343689U (en) | 2019-07-15 | 2019-07-15 | Roots type hydrogen circulating pump |
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| Publication Number | Publication Date |
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| CN210343689U true CN210343689U (en) | 2020-04-17 |
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| CN201921106039.6U Active CN210343689U (en) | 2019-07-15 | 2019-07-15 | Roots type hydrogen circulating pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307154A (en) * | 2019-07-15 | 2019-10-08 | 烟台菱辰能源有限公司 | A kind of roots-type hydrogen gas circulating pump |
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- 2019-07-15 CN CN201921106039.6U patent/CN210343689U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307154A (en) * | 2019-07-15 | 2019-10-08 | 烟台菱辰能源有限公司 | A kind of roots-type hydrogen gas circulating pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 264000 south of xingjiazhuang village, Tingkou Town, Qixia City, Yantai City, Shandong Province Patentee after: Yantai Dongde Hydrogen Energy Technology Co.,Ltd. Address before: Room 1201, 12th floor, Building C, Yida Zhihui Valley, 300 Changjiang Road, Yantai Economic and Technological Development Zone, Shandong Province, 264000 Patentee before: YANTAI LINGCHEN ENERGY Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Roots type hydrogen circulation pump Effective date of registration: 20211022 Granted publication date: 20200417 Pledgee: Yantai Rural Commercial Bank Co.,Ltd. Zhifu District Hongkou sub branch Pledgor: Yantai Dongde Hydrogen Energy Technology Co.,Ltd. Registration number: Y2021980011223 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221209 Granted publication date: 20200417 Pledgee: Yantai Rural Commercial Bank Co.,Ltd. Zhifu District Hongkou sub branch Pledgor: Yantai Dongde Hydrogen Energy Technology Co.,Ltd. Registration number: Y2021980011223 |