CN104131991B - The self cooling circulation axial force bearing device of a kind of horizontal pump - Google Patents
The self cooling circulation axial force bearing device of a kind of horizontal pump Download PDFInfo
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- CN104131991B CN104131991B CN201410388050.1A CN201410388050A CN104131991B CN 104131991 B CN104131991 B CN 104131991B CN 201410388050 A CN201410388050 A CN 201410388050A CN 104131991 B CN104131991 B CN 104131991B
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Abstract
The invention discloses the self cooling circulation axial force bearing device of a kind of horizontal pump, comprise the transmission shaft be connected with described pump shaft, on described transmission shaft, overlap connecting connector, axial bearing unit and afterbody end cap from left to right successively; Axial bearing unit comprises the front axle bearing arrayed from left to right and the anterior bearing coordinated with it, slide block, thrust bearing sector unit, bearing bracket, rear axle bearing; Bearing bracket right-hand member is provided with curved surface round platform, and the left side of rear axle bearing is provided with the concave surface matched with curved surface round platform; Between front axle bearing and rear axle bearing, radial direction is from inside to outside connected with lubricating sleeve and coolant jacket successively, and from inside to outside forms lubrication cavity volume and cooling cavity volume successively; Cooling liquid is in cooling cavity volume and circulate between suction flange.The present invention can carry axial force, from cool cycles between realizing in cooling cavity volume and pump body, improves working life and the using scope of loader.
Description
Technical field
The present invention relates to a kind of pump, particularly the self cooling circulation axial force bearing device of a kind of horizontal pump.
Background technique
Pump is widely used in the every field of industry, agricultural, plays an important role in the national economic development.At present, the centrifugal high pressure water-injection pump of horizontal multi-stage is used for the fields such as oil field long distance feedwater, down-hole pressure water injection.Pump is in operation process, and on pump shaft, effect has axial force usually, and this power pulls rotor axial to move, and therefore must manage balance or eliminate axial force just to make pump normally work.Be commonly used in Equilibrator kind on pump at present more, as balancing drum, Balance disc, equalizing orifice etc.For multistage high-pressure pump, total axial force is comparatively large in pump, therefore balancing axial thrust problem seems and is even more important.Conventional balancing axial thrust method has six kinds at present: 1. the back-to-back layout balance of impeller; The pump structure applying this kind of method is complicated, and manufacture cost is high; 2. wheel backface establishes balance cylinder; The axial force of this method balance is not thorough, have remnants, and use can cause accumulation residual axial force excessive in multistage pump; 3. add balancing drum after impeller; The axial force of this method balance is not thorough, and in multistage pump, use can cause accumulation residual axial force excessive; 4. impeller back shroud establishes Balance disc; This kind of designing requirement of method to Balance disc is higher, and needs to use different Balance discs in different pump; 5. after impeller, add balancing drum, Balance disc, gimbal combined unit; Design and installation is complicated, and reliability is low; 6. add stabilized pressure pump; The axial force of this kind of method is mainly carried by bearing in motor, and stabilized pressure pump spoilage is high, the poor reliability of complete machine group.Also existing and manufacture complicated all in various degree in above six kinds of balancing axial thrust methods, maintenance difficult, reliability is low, axial force balance weak effect, and thermal discharge is high, making and installation high in cost of production variety of problems.Tradition loader inner utilization rolling bearing and sliding bearing combinationally use bear axial force, in running, there is thermal discharge high, the life-span is short, axial force and radial force low bearing capacity, cannot carry out the problems such as secondary maintenance.
Summary of the invention
The present invention provides a kind of self cooling circulation axial force bearing device of horizontal pump that can solve pump axial force balance and cooling for solving in known technology the technical problem that exists.
The technological scheme that the present invention takes for the technical problem existed in solution known technology is: the self cooling circulation axial force bearing device of a kind of horizontal pump, comprise suction flange and pump shaft, also comprise the transmission shaft be connected with described pump shaft, on described transmission shaft, overlap connecting connector, axial bearing unit and afterbody end cap from left to right successively; Described link and be equipped with mechanical seal between described afterbody end cap and described transmission shaft; Described axial bearing unit comprises the front axle bearing arrayed from left to right and the anterior bearing coordinated with it, slide block, thrust bearing sector unit, bearing bracket and rear axle bearing; Described bearing bracket left side is provided with scalloped recess, and described thrust bearing sector unit right side coordinates in the described scalloped recess of embedding; Described bearing bracket right-hand member is provided with curved surface round platform, and the side up and down in described curved surface round platform axis cross section is arc, and the left side of described rear axle bearing is provided with the concave surface matched with described curved surface round platform; Described suction flange, described link and described front axle bearing are affixed successively; Described bearing bracket, described rear axle bearing and described afterbody end cap are affixed successively; Between described front axle bearing and described rear axle bearing, radial direction is from inside to outside connected with lubricating sleeve and coolant jacket successively, and from inside to outside forms lubrication cavity volume and cooling cavity volume successively; Described suction flange cavity volume is connected with described cooling cavity volume.
The present invention can also adopt following technological scheme:
Described curved surface round platform is sphere round platform.
Also comprise the circulating cooling pipe that two connect described suction flange cavity volume and described cooling cavity volume, described two circulating cooling pipes are that same vertical line is arranged up and down.
Adjustment pad is provided with between described anterior bearing and described front axle bearing.
Described thrust bearing sector unit and described bearing bracket, be provided with O type circle between the two, and located by pin.
Double mechanical seal and O type circle is back-to-back provided with between described link and described transmission shaft.
Described front axle bearing and between described rear axle bearing and described transmission shaft, is equipped with cemented carbide axle sleeve and bronze plain bearing.
Described axial bearing unit also comprises lock washer and little round nut, and described slide block is fixedly connected with transmission shaft with described little round nut by the key on transmission shaft, described lock washer.
The advantage that the present invention has and good effect are: adopt coolant jacket to form cooling cavity volume and structure and suction flange cavity volume UNICOM, the cryogenic liquide that pump is carried enters cooling cavity volume, and cool high-temp liquid in cavity volume and be back in suction flange cavity volume, realize cooling cavity volume and pump body between from cool cycles, thus cool lubricant oil and the axial bearing unit of lubrication cavity volume, improve working life and the using scope of loader, and without the need to arranging sink in addition, radiating treatment is carried out to loader; Adopt thrust bearing carrying axial force, increase axial force carrying scope; Lubrication cavity volume fills the grease of 1/3-1/2, adopts splash lubrication structure to reduce the thermal discharge of loader; Adopt the structure such as double mechanical seal and O type rubber seal back-to-back, reduce the pressure rating requirement of pump body to conveying liquid; Adopt cemented carbide axle sleeve and bronze plain bearing to enhance the working life of bearing, increase the ability to radial force carrying.
The invention provides one, to have structure simple, easily manufactured, and reliable performance is with low cost, and axial force bearing capacity is high, the structure that extends pump working life.Solve the manufacture occurred in conventional axial equilibrium of forces method complicated, with high costs, safeguard inconvenience, thoroughly do not have remnants, poor reliability, the problems such as thermal discharge is high.The working life of pump can be effectively raised, reduce maintenance period and maintenance cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional view of the Vertical direction cutting of Fig. 1;
Fig. 3 is the sectional view of the substantially horizontal cutting of Fig. 1.
In figure: 1, suction flange; 2, mechanical seal; 3, link; 4, front axle bearing; 5, lubricating sleeve; 6, coolant jacket; 7, slide block; 8, thrust bearing sector unit; 9, rear axle bearing; 10, afterbody end cap; 11, bearing shell; 12, transmission shaft; 13, axle sleeve; 14, positioning ring; 15, bearing bracket; 16, O type circle; 17, little round nut; 18, pin; 19, lock washer; 20, anterior bearing; 21, setting sleeve; 22, pipe joint; 23, cavity volume is lubricated; 24, cavity volume is cooled; 25, cocycle cooling tube; 26, lower circulating cooling pipe; 27, cooling liquid water filling hole.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 3, the self cooling circulation axial force bearing device of a kind of horizontal pump, comprises suction flange 1 and pump shaft, also comprises the transmission shaft 12 be connected with described pump shaft, on described transmission shaft 12, overlap connecting connector 3, axial bearing unit and afterbody end cap 10 successively from left to right; Described link 3 and be equipped with mechanical seal 2 between described afterbody end cap 10 and described transmission shaft; Described axial bearing unit comprises the front axle bearing 4 arrayed from left to right and the anterior bearing 20 coordinated with it, slide block 7, thrust bearing sector unit 8, bearing bracket 15 and rear axle bearing 9; Described bearing bracket 15 left side is provided with scalloped recess, and the right side of described thrust bearing sector unit 8 coordinates in the described scalloped recess of embedding; Described bearing bracket 15 right-hand member is provided with curved surface round platform, and the side up and down in described curved surface round platform axis cross section is arc, and the left side of described rear axle bearing 9 is provided with the concave surface matched with described curved surface round platform; Described suction flange 1, described link 3 and described front axle bearing 4 are affixed successively; Described bearing bracket 15, described rear axle bearing 9 and described afterbody end cap 10 are affixed successively; Between described front axle bearing 4 and described rear axle bearing 9, radial direction is from inside to outside connected with lubricating sleeve 5 and coolant jacket 6 successively, and from inside to outside forms lubrication cavity volume 23 and cooling cavity volume 24 successively; The cavity volume of described suction flange 1 is connected with described cooling cavity volume 24.。
The curved surface round platform of described bearing bracket 15 right-hand member, is formed by spheroid, spheroid etc. are transversal, and the dual-side up and down of its shaft section is symmetrical curved line, and this curved line rotates about the axis formation curved surface; The preferred curved surface of curved surface round platform of described bearing bracket 15 right-hand member is the sphere round platform of spherical shape, now curved line is a part for circle, the concave surface of the left side of described rear axle bearing 9 matches with the curved surface round platform of described bearing bracket 15 right-hand member, ensures the self-alignment of described bearing bracket 15 like this.
In addition, this device also can comprise the circulating cooling pipe that two connect described suction flange cavity volume and described cooling cavity volume 24, refer to Fig. 3, cocycle cooling 25 and lower circulating cooling 26, described two circulating cooling pipes can be same vertical line and arrange up and down, wherein cocycle cooling 25 is upper, lower circulating cooling 26 below, article two, just to layout about, when the vapourizing temperature of lubricating sleeve surface temperature not higher than liquid in coolant jacket, utilize the height difference of cocycle cooling tube 25 and lower circulating cooling pipe 26, and liquid and suction flange hold the temperature difference of intracavity liquid in cooling cavity volume 24, realize liquid and suction flange in cooling cavity volume 24 and hold the heat exchange of intracavity liquid, thus reduce the room temperature of lubrication cavity volume 23.When lubricating sleeve surface temperature is higher than when cooling vaporizing liquid temperature in cavity volume 24, namely there is a large amount of saturated gas in cold but cavity volume 24 top, overflowed by cocycle cooling tube 25, now cool in cavity volume 24 and produce negative pressure, namely cryogenic liquide flows in cooling cavity volume 24 in lower cool cycles pipe 26, keeps temperature in lubrication cavity volume 23 unlikely too high.
Adjustment pad can be provided with, in order to distance between adjusting slider and anterior bearing between described anterior bearing 20 and described front axle bearing 4.
Described thrust bearing sector unit 8 and described bearing bracket 15, can be provided with O type circle 16 between the two, and connect by pin 18 and other modes affixed, location.
Described bearing bracket 15 and described rear axle bearing 9 be connected by screw and other modes affixed.
Double mechanical seal and O type circle back-to-back can be provided with between described link 3 and described transmission shaft 12, improve sealability further.
Oil refill in lubrication cavity volume 23 is kept extremely to lubricate 1/3 to 1/2 of cavity volume; Thus realize splash lubrication bearing rotary and slide member.
Described front axle bearing and between described rear axle bearing and described transmission shaft 12, can be equipped with cemented carbide axle sleeve 13 and bronze plain bearing 11, thus enhance the working life of bearing, increases the ability to radial force carrying.
Described axial bearing unit also can comprise lock washer 19 and little round nut 17, described slide block 7 is fixedly connected with transmission shaft with described little round nut 17 by the key on transmission shaft 12, described lock washer 19, described little round nut 17 is threaded with transmission shaft, lock little round nut, thus fastening lock washer 19 and slide block 7, thus be convenient to install and regulate.
Working principle of the present invention:
Described axle sleeve, slide block are rotated by key transmitting torque on axle, position by pin 18 and O type circle 16 and fix between thrust bearing sector unit 8 and bearing bracket 15, be connected by screw between bearing bracket 15 with described tail bearing seat 9, connect by high-strength bolt between suction flange 1, link 3, thrust shaft block 4, lubricating sleeve 5, tail bearing seat 9, afterbody end cap.Suction flange 1 cavity volume is connected with cooling cavity volume 24 by cocycle cooling tube 25 and lower circulating cooling pipe 26; Mechanical seal 2 and O type circle 16 constitute sealing system, wherein mechanical seal 2 adopts positive and negative two groups of mechanical seals at nearly feed-water end, material is respectively soft-hard and hard-hard, back-to-back, by double mechanical seal and O type circle 16 back-to-back, axial bearing unit and transmission shaft are sealed, isolating seal is carried out to liquid that pump is carried; Rely on lubrication cavity volume 23 in-lubricant to absorb the heat produced when axial bearing unit bears axial force, and pass to cooling liquid in cooling cavity volume 24 by lubricating sleeve 5, cooling liquid absorbs heat Posterior circle and flows out.When the vapourizing temperature of lubricating sleeve surface temperature not higher than liquid in coolant jacket, utilize the height difference of cocycle cooling tube 25 and lower circulating cooling pipe 26, and liquid and suction flange hold the temperature difference of intracavity liquid in cooling cavity volume 24, realize liquid and suction flange in cooling cavity volume 24 and hold the heat exchange of intracavity liquid, thus reduce the room temperature of lubrication cavity volume 23.When lubricating sleeve surface temperature is higher than when cooling vaporizing liquid temperature in cavity volume 24, namely there is a large amount of saturated gas in cold but cavity volume 24 top, overflowed by cocycle cooling tube 25, now cool in cavity volume 24 and produce negative pressure, namely cryogenic liquide flows in cooling cavity volume 24 in lower cool cycles pipe 26, keeps temperature in lubrication cavity volume 23 unlikely too high.
Fluid lubricant capacity in described lubricating sleeve initially should be made to should be 1/3 ~ 1/2 of lubrication cavity volume 23 volume, can splash system lubrication be formed like this; Initially by cooling liquid water filling hole 27, cooling liquid is filled whole cooling cavity volume 24, also can before unit running, cooling liquid be flowed in suction flange cavity volume and be full of cooling cavity volume 24.
Erection sequence of the present invention:
Slide block 7 is fixed on transmission shaft 12 by the key on transmission shaft 12 and lock washer 19, little round nut 17, and positioning ring 14 and axle sleeve 13 are sleeved on transmission shaft 12, bearing shell 11 press-fits in rear axle bearing 9, the thrust bearing sector unit 8 assembled is connected with rear axle bearing 9 by bolt with bearing bracket 15, ensure the sphere curved surface of the sphere round platform of bearing bracket 15 right-hand member, corresponding spherical inside surface part can move up and down in the left end concave surface of rear axle bearing 9; After transmission shaft 12 installs mechanical seal, afterbody end cap 10 and rear axle bearing 9 are fastened by bolts.Now by lubricating sleeve 5 and rear axle bearing 9 with by screw and briquetting affixed, foreign is ensured in lubrication cavity volume 23, anterior bearing 20 and front axle bearing 4 are by screw fastening, and front axle bearing 4 is affixed by screw with lubricating sleeve 5, and now the axial movement value of transmission shaft 12 should meet designing requirement; Install positive mechanical seal 2, link 3, anti-mechanical seal 2 successively, the Placement of link 3 is high strength exploitation; Circulating cooling cover 6 is installed successively and suction flange 1, cocycle cooling tube 25 are managed, lower circulating cooling pipe 26 is managed, installation.
Claims (8)
1. the self cooling circulation axial force bearing device of horizontal pump, comprises suction flange and pump shaft, it is characterized in that, also comprises the transmission shaft be connected with described pump shaft, on described transmission shaft, overlaps connecting connector, axial bearing unit and afterbody end cap from left to right successively; Described link and be equipped with mechanical seal between described afterbody end cap and described transmission shaft; Described axial bearing unit comprises the front axle bearing arrayed from left to right and the anterior bearing coordinated with it, slide block, thrust bearing sector unit, bearing bracket and rear axle bearing; Described bearing bracket left side is provided with scalloped recess, and described thrust bearing sector unit right side coordinates in the described scalloped recess of embedding; Described bearing bracket right-hand member is provided with curved surface round platform, and the side up and down in described curved surface round platform axis cross section is arc, and the left side of described rear axle bearing is provided with the concave surface matched with described curved surface round platform; Described suction flange, described link and described front axle bearing are affixed successively; Described bearing bracket, described rear axle bearing and described afterbody end cap are affixed successively; Between described front axle bearing and described rear axle bearing, radial direction is from inside to outside connected with lubricating sleeve and coolant jacket successively, and from inside to outside forms lubrication cavity volume and cooling cavity volume successively; Described suction flange cavity volume is connected with described cooling cavity volume.
2. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, is characterized in that, described curved surface round platform is sphere round platform.
3. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, it is characterized in that, also comprise the circulating cooling pipe that two connect described suction flange cavity volume and described cooling cavity volume, described two circulating cooling pipes are the layout up and down of same vertical line.
4. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, is characterized in that, is provided with adjustment pad between described anterior bearing and described front axle bearing.
5. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, is characterized in that, described thrust bearing sector unit and described bearing bracket are provided with O type circle between the two, and are located by pin.
6. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, is characterized in that, is provided with double mechanical seal and O type circle back-to-back between described link and described transmission shaft.
7. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, is characterized in that, described front axle bearing and between described rear axle bearing and described transmission shaft, is equipped with cemented carbide axle sleeve and bronze plain bearing.
8. the self cooling circulation axial force bearing device of horizontal pump according to claim 1, it is characterized in that, described axial bearing unit also comprises lock washer and little round nut, and described slide block is fixedly connected with transmission shaft with described little round nut by the key on transmission shaft, described lock washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388050.1A CN104131991B (en) | 2014-08-07 | 2014-08-07 | The self cooling circulation axial force bearing device of a kind of horizontal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410388050.1A CN104131991B (en) | 2014-08-07 | 2014-08-07 | The self cooling circulation axial force bearing device of a kind of horizontal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104131991A CN104131991A (en) | 2014-11-05 |
| CN104131991B true CN104131991B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410388050.1A Active CN104131991B (en) | 2014-08-07 | 2014-08-07 | The self cooling circulation axial force bearing device of a kind of horizontal pump |
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| CN (1) | CN104131991B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110541839B (en) * | 2019-09-02 | 2024-04-09 | 丹东通博泵业有限公司 | Embedded thrust bearing assembly for magnetic drive pump and magnetic drive pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2633392A (en) * | 1951-03-09 | 1953-03-31 | Us Electrical Motors Inc | Thrust bearing |
| JPS6188014A (en) * | 1984-10-05 | 1986-05-06 | Hitachi Ltd | Thrust bearing device |
| CN201330753Y (en) * | 2008-12-30 | 2009-10-21 | 四川胜达泵业设备制造有限公司 | Self-cooling structure of multi-stage centrifugal pump |
| CN103790853A (en) * | 2012-10-29 | 2014-05-14 | 山东双轮股份有限公司 | Axial force balancing device |
| CN204003577U (en) * | 2014-08-07 | 2014-12-10 | 天津市百利溢通电泵有限公司 | A kind of self cooling circulation axial force bearing device for horizontal pump |
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