CN211820055U - Novel heat conduction oil pump cooling structure - Google Patents
Novel heat conduction oil pump cooling structure Download PDFInfo
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- CN211820055U CN211820055U CN202020113881.9U CN202020113881U CN211820055U CN 211820055 U CN211820055 U CN 211820055U CN 202020113881 U CN202020113881 U CN 202020113881U CN 211820055 U CN211820055 U CN 211820055U
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Abstract
The utility model discloses a novel heat conduction oil pump cooling structure, which belongs to the technical field of heat conduction oil pumps, and the technical problem solved by the utility model is to provide a novel heat conduction oil pump cooling structure, which adopts the technical proposal that; a novel heat conduction oil pump cooling structure includes: the pump comprises a main shaft, a pump body, an impeller and a pump cover, wherein the main shaft is arranged in the pump body, the impeller and the pump cover are coaxially arranged on the main shaft, a heat insulation sleeve is arranged between the impeller and the pump cover, the heat insulation sleeve is coaxially arranged on the main shaft, an annular cavity is formed in the heat insulation sleeve, heat insulation powder is arranged in the annular cavity, and the interior of the annular cavity is vacuumized through a vacuumizing machine; the device is widely applied to the field of heat transfer oil pumps.
Description
Technical Field
The utility model belongs to the technical field of the conduction oil pump, concretely relates to novel heat conduction oil pump cooling structure.
Background
The heat conducting oil pump is an ideal hot oil circulating pump or a heat carrier conveying pump, and is an ideal matching pump on heat exchange equipment. The heat conducting oil pump is widely used in heating system of heat carrier in China, has entered various industrial fields of petroleum, chemical industry, rubber, plastics, pharmacy, textile, printing and dyeing, road building, food and the like, is mainly used for conveying weak corrosive liquid without solid particles, is a centrifugal oil pump with conveying medium temperature higher than or equal to natural temperature, and the conveying medium of the heat oil pump is generally higher than or equal to 260 ℃.
In the aspects of materials and structures of the heat conduction oil pump, because the thermal expansion coefficients of the assembly materials of the heat conduction oil pump are different, the tight fit part is often loosened, so that the gap between the dynamic pair and the static pair is changed, particularly, the mechanical sealing part is mostly composed of parts made of different materials, so that the deformation caused is large, the mechanical seal is easy to lose efficacy and leak, the dangerous medium is easy to cause accidents due to leakage, and the pump shell with a complex shape is also likely to cause accidents due to irregular expansion deformation. Therefore, the temperature of the mechanical seal part and the temperature of the mechanical seal flushing fluid need to meet the accident caused by expansion deformation due to different materials, such as failure of the mechanical seal, ejection of high-temperature heat conduction oil, serious harm to personal safety and production accident.
The existing heat conduction oil pump is usually designed by lengthening the pump length, a first filler seal is arranged at the pump cover, then a sliding bearing is arranged, a mechanical seal is arranged, finally, a rolling bearing is arranged, the effect is that the flow limiting and pressure reducing are carried out through the filler seal, and a high-temperature medium after the flow limiting and pressure reducing is transmitted to the mechanical seal position after the heat dissipation of the heat dissipation rib plate to ensure that the temperature of the mechanical seal position is not too high. On one hand, the axial size of the structure is too long, the sliding bearing is easy to damage, the impeller transmits more heat to the pump cover, and the manufacturing cost of the heat dissipation structure is high; on the other hand, the flow velocity of the machine seal flushing fluid flowing to the mechanical seal is too fast and the impact force is large, so that the micro-deformation of the dynamic and static friction surfaces of the machine seal is too large, the machine seal is easy to lose efficacy and the cooling effect is poor. Therefore, it is an urgent need to solve the problem of providing a heat-conducting oil pump with simple structure, good heat-insulating effect and good mechanical seal cooling effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a novel heat conduction oil pump cooling structure for overcome current heat conduction oil pump structure complicacy, thermal-insulated effect poor and the poor problem of machine seal cooling effect.
The utility model adopts the technical scheme as follows:
a novel heat conduction oil pump cooling structure includes: the pump comprises a main shaft, a pump body, an impeller and a pump cover, wherein the main shaft is arranged inside the pump body, the impeller and the pump cover are coaxially arranged on the main shaft, a heat insulation sleeve is arranged between the impeller and the pump cover, the heat insulation sleeve is coaxially arranged on the main shaft, an annular cavity is formed inside the heat insulation sleeve, heat insulation powder is arranged inside the annular cavity, and the annular cavity is vacuumized through a vacuumizing machine.
Further, be provided with the drag reduction passageway between radiation shield and the pump cover, the drag reduction passageway includes: the side end face of the pump cover B is coaxially provided with a plurality of annular baffles which are correspondingly inserted into the annular grooves respectively to form drag reduction channels, and the drag reduction channels are S-shaped channels.
Furthermore, the drag reduction channel is provided with a machine seal flushing fluid inlet far away from the upper end of the main shaft, and the drag reduction channel is provided with a machine seal flushing fluid outlet near the upper end of the main shaft.
Further, a shaft sleeve is further arranged between the heat insulation sleeve and the main shaft, a throttling bush is further arranged between the shaft sleeve and the heat insulation sleeve, and the throttling bush is used for preventing flushing liquid from flowing back to the impeller.
Further, the heat insulation powder is glass fiber reinforced polyamide porous powder.
Further, a mechanical seal is arranged between the pump cover and the main shaft.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
one, the utility model discloses in, a novel heat conduction oil pump cooling structure who adopts, simple structure insulates against heat through setting up the radiation shield casing, has avoided the problem of the axial dimension overlength of heat conduction oil pump, sets up thermal-insulated powder and carries out the evacuation simultaneously inside the radiation shield casing for it is thermal-insulated for the vacuum between impeller and the pump cover, and thermal-insulated effectual blocks most heat on the impeller and transmits to the pump cover, has reduced the temperature of pump cover, extension heat conduction oil pump's life.
Two, the utility model discloses in, a novel heat conduction oil pump cooling structure who adopts, through setting up the drag reduction passageway, when the heat conduction oil pump operation, the high-pressure flush fluid that the impeller export goes out gets into the drag reduction passageway through machine seal flush fluid import, and ring baffle has hindered the flow of flush fluid, has avoided mechanical seal structure's pressure impact, has prolonged the flush fluid radiating time, has improved the cooling effect to mechanical seal.
Thirdly, the utility model discloses in, a novel heat conduction oil pump cooling structure of adoption, the thermal-insulated powder of use be glass fiber reinforced polyamide, have fine mechanical properties, good heat resistance, and this material cost of manufacture is low moreover, has reduced the cooling cost of whole heat conduction oil pump.
Drawings
Fig. 1 is a schematic structural diagram of a novel heat-conducting oil pump cooling structure of the present invention.
Fig. 2 is an enlarged view of the resistance-reducing channel of the novel heat-conducting oil pump cooling structure of the present invention.
Fig. 3 is a structural diagram of the heat insulating sleeve of the novel heat conducting oil pump cooling structure of the present invention.
Fig. 4 is a side view of the heat insulating sleeve a of the novel heat conducting oil pump cooling structure of the present invention.
Fig. 5 is the structure diagram of a novel heat conduction oil pump cooling structure pump cover of the utility model.
Fig. 6 is a side view of the pump cover B of the novel heat-conducting oil pump cooling structure.
Fig. 7 is the utility model relates to a novel heat conduction oil pump cooling structure flush fluid flow diagram.
The labels in the figure are: 1-main shaft, 2-pump body, 3-impeller, 4-pump cover, 5-heat insulation sleeve, 6-annular chamber, 7-drag reduction channel, 8-machine seal flushing liquid inlet, 9-machine seal flushing liquid outlet, 10-throttling bush, 11-heat insulation powder, 12-annular groove and 13-annular baffle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 to 7, a novel heat-conducting oil pump cooling structure in this embodiment includes: the pump comprises a main shaft 1, a pump body 2, an impeller 3 and a pump cover 4, wherein the main shaft 1 is arranged in the pump body 2, the impeller 3 and the pump cover 4 are coaxially arranged on the main shaft 1,
be provided with heat insulating sleeve 5 between impeller 3 and the pump cover 4, heat insulating sleeve 5 is coaxial to be set up on main shaft 1, annular chamber 6 has been seted up to heat insulating sleeve 5 is inside, 6 inside thermal-insulated powder 11 that are provided with of annular chamber, and 6 insides of annular chamber carry out the evacuation through the evacuation machine.
Be provided with drag reduction passageway 7 between radiation shield 5 and pump cover 4, drag reduction passageway 7 includes: the end face of the side A of the heat insulation sleeve 5 is provided with a plurality of coaxial annular grooves 12, the end face of the side B of the pump cover 4 is coaxially provided with a plurality of annular baffles 13, the annular baffles 13 are correspondingly inserted into the annular grooves 12 to form drag reduction channels 7, and the drag reduction channels 7 are S-shaped channels.
The upper end of the drag reduction channel 7, which is far away from the main shaft 1, is provided with a machine seal flushing fluid inlet 8, and the upper end of the drag reduction channel 7, which is close to the main shaft 1, is provided with a machine seal flushing fluid outlet 9.
Still be provided with the axle sleeve between heat insulating sleeve 5 and main shaft 1, still be provided with throttle bush 10 between axle sleeve and the heat insulating sleeve 5, throttle bush 10 is used for preventing the flush fluid backward flow to impeller 3.
The heat insulation powder 11 is glass fiber reinforced polyamide porous powder.
And a mechanical seal is arranged between the pump cover 4 and the main shaft 1.
The utility model discloses a concrete working process as follows:
after the pump body 2 is started, when heat generated in the rotation process of the impeller 3 is transmitted to the pump cover 4, the heat insulation sleeve 5 insulates heat of the pump cover 4, blocks most of heat on the impeller 2 from being transmitted to the pump cover 4, and reduces the temperature of the pump cover; simultaneously, the high-pressure flush fluid in impeller 2 exit gets into drag reduction passageway 7 through machine seal flush fluid import 8, and drag reduction passageway 7's annular baffle 13 has slowed down the velocity of flow of flush fluid, has prolonged flush fluid temperature radiating time, has reduced the temperature that the flush fluid got into mechanical seal, has improved mechanical seal's cooling effect.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A novel heat conduction oil pump cooling structure includes: the pump comprises a main shaft (1), a pump body (2), an impeller (3) and a pump cover (4), wherein the main shaft (1) is arranged in the pump body (2), the impeller (3) and the pump cover (4) are coaxially arranged on the main shaft (1),
be provided with between impeller (3) and pump cover (4) heat insulating sleeve (5), heat insulating sleeve (5) coaxial setting is on main shaft (1), annular chamber (6) have been seted up to heat insulating sleeve (5) inside, annular chamber (6) inside is provided with thermal-insulated powder (11), and annular chamber (6) inside carries out the evacuation through the evacuation machine.
2. The novel heat-conducting oil pump cooling structure as claimed in claim 1, wherein: be provided with drag reduction passageway (7) between radiation shield (5) and pump cover (4), drag reduction passageway (7) include: annular groove (12) and ring baffle (13), a plurality of coaxial annular groove (12) have been seted up to heat insulating sleeve (5) A side end face department, pump cover (4) B side end face department is coaxial to be provided with a plurality of ring baffle (13), a plurality of ring baffle (13) correspond respectively to alternate to annular groove (12) inside formation drag reduction passageway (7), drag reduction passageway (7) are the S-shaped passageway.
3. The novel heat-conducting oil pump cooling structure as claimed in claim 2, wherein: the resistance reducing channel (7) is provided with a machine seal flushing fluid inlet (8) far away from the upper end of the main shaft (1), and the resistance reducing channel (7) is provided with a machine seal flushing fluid outlet (9) near the upper end of the main shaft (1).
4. The novel heat-conducting oil pump cooling structure as claimed in claim 1, wherein: still be provided with the axle sleeve between heat insulating sleeve (5) and main shaft (1), still be provided with throttle bush (10) between axle sleeve and heat insulating sleeve (5), throttle bush (10) are used for preventing the flush fluid backward flow to impeller (3).
5. The novel heat-conducting oil pump cooling structure as claimed in claim 1, wherein: the heat insulation powder (11) is glass fiber reinforced polyamide porous powder.
6. The novel heat-conducting oil pump cooling structure as claimed in claim 1, wherein: and a mechanical seal is arranged between the pump cover (4) and the main shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020113881.9U CN211820055U (en) | 2020-01-19 | 2020-01-19 | Novel heat conduction oil pump cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020113881.9U CN211820055U (en) | 2020-01-19 | 2020-01-19 | Novel heat conduction oil pump cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820055U true CN211820055U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020113881.9U Active CN211820055U (en) | 2020-01-19 | 2020-01-19 | Novel heat conduction oil pump cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211820055U (en) |
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2020
- 2020-01-19 CN CN202020113881.9U patent/CN211820055U/en active Active
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