CN202597187U - Fore bearing structure capable of starting feed pump - Google Patents
Fore bearing structure capable of starting feed pump Download PDFInfo
- Publication number
- CN202597187U CN202597187U CN 201220118947 CN201220118947U CN202597187U CN 202597187 U CN202597187 U CN 202597187U CN 201220118947 CN201220118947 CN 201220118947 CN 201220118947 U CN201220118947 U CN 201220118947U CN 202597187 U CN202597187 U CN 202597187U
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- Prior art keywords
- bearing
- oil
- backward gland
- pump shaft
- bearing structure
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- Expired - Lifetime
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Abstract
The utility model discloses a fore bearing structure capable of starting a feed pump. The fore bearing structure capable of starting the feed pump comprises a bearing body, front and rear pressure covers, a cylindrical roller bearing, an oil slinger and two dustproof plates. The bearing body is provided with a bearing cavity and an oil pool. Spacer sleeves protruding inwards are respectively arranged on inner sides of the front and rear pressure covers. An oil inlet hole is arranged on the spacer sleeve of the rear cover. The front and rear pressure covers are sleeved on a pump shaft and connected with the front and rear pressure ends on the upper portion of the bearing body. The cylindrical roller bearing is directly arranged on the pump shaft and inside the bearing cavity. The inner ring of the cylindrical roller bearing is axially positioned by a first shaft sleeve and a second shaft sleeve. The outer ring of the cylindrical roller bearing is axially positioned by spacer sleeves on the front and rear pressure covers. The oil slinger hangs on the first shaft sleeve and is connected on the bearing body by a positioning screw. The lower portion of the oil slinger is soaked in the oil pool and two dustproof plates are respectively fixed on the pump shaft which is on the outsides of the front and rear pressure covers.
Description
Technical field
The utility model relates to a kind of used in nuclear power station and starts feed water pump, is specifically related to a kind of fore bearing structure that is used to start feed water pump.
Background technique
Used in nuclear power station starts feed water pump and is used for during reactor start-up and normal shutdown, supplying water to steam generator, need not employ the water source of auxiliary feedwater system, and gives that the secondary circuit flushing facilitates when starting.
What the bearing on the existing startup feed water pump adopted is pressure lubrication, and is furnished with outside oil supply system to the bearing fuel feeding.Outside oil supply system comprises outside oil pump, fuel tank, cooler and pipeline etc., has therefore increased the complexity and the source of trouble of system and has increased operating cost.
The model utility content
The purpose of the utility model is in order to overcome the deficiency of existing technology, a kind of fore bearing structure that is used to start feed water pump to be provided, and it has significantly reduced the complexity and the source of trouble of operating cost, system, improved the reliability of system.
The technological scheme that realizes above-mentioned purpose is: a kind of fore bearing structure that is used to start feed water pump, be installed in the drive end of pump shaft, and said rear bearing structure comprises bearing support and forward and backward gland, a roller bearing, a disc and two dustproof dishes, wherein,
Said bearing support has superposed bearing bore and is positioned at the oil sump that is communicated with bearing bore of bottom; Inwardly be convexly equipped with an interstage sleeve on the inner side surface of said forward and backward gland respectively, offer an oil inlet hole on the interstage sleeve of said rear pressing cover, said forward and backward gland is sleeved on the said pump shaft and is connected the top front and back ends of said bearing support; Said roller bearing is directly installed on the pump shaft and is positioned at said bearing bore; The inner ring of this roller bearing is through first axle sleeve and the second axle sleeve axially locating, and the outer ring of said roller bearing is through the interstage sleeve axially locating on the said forward and backward gland; Said disc is suspended on said first axle sleeve respectively and is connected on the said bearing support through a stop screw respectively, and the bottom of this disc is immersed in the said oil sump; Said two dustproof dishes are separately fixed on the said pump shaft that is positioned at the said forward and backward gland outside.
The above-mentioned fore bearing structure that is used to start feed water pump wherein, is offered an oil collecting ring respectively on the inner headed face of said forward and backward gland, and on the inner side surface of said forward and backward gland, offers the spill port that is communicated with said oil collecting ring respectively.
The above-mentioned fore bearing structure that is used to start feed water pump; Wherein, Offer a scrobicular ring on the outer side surface of said forward and backward gland respectively; The inner side surface of said dustproof dish is provided with the sealing bulge loop corresponding with scrobicular ring, so that dustproof dish is embedded in the mode in the scrobicular ring of forward and backward gland and is fixed on the said pump shaft through Cock screw with its sealing bulge loop.
The above-mentioned fore bearing structure that is used to start feed water pump wherein, is provided with the multi-disc radiating fin respectively in uniform way on the lower end surface of said bearing support, outer side surface and the upper-end surface.
Being used to of the utility model starts the technological scheme of the fore bearing structure of feed water pump; Adopt thin oil lubricant, oil sump promptly is set on bearing support, in oil sump, inject the lubricated thin oil of effective liquid level; And pass through disc and give the bearing fuel feeding continuously; Therefore make the entire pump group need not any outside oil supply system, significantly reduced the complexity and the source of trouble of operating cost, system, improved the reliability of system.Adopt natural cooling in addition, radiating fin promptly is set on bearing support, to increase heat diffusion area.
Description of drawings
Fig. 1 is the structural representation of fore bearing structure that is used to start feed water pump of the utility model;
Fig. 2 is the side view of Fig. 1.
Embodiment
In order to understand the technological scheme of the utility model better, below through embodiment particularly and combine accompanying drawing at length to explain:
See also Fig. 1 and Fig. 2, a kind of fore bearing structure that is used to start feed water pump of the utility model is installed in the drive end of pump shaft 1, comprises bearing support 2 and forward and backward gland 3,4, a roller bearing 5, a disc 6 and two dustproof dishes 71,72, wherein:
Being sleeved on the pump shaft 1 and being connected the top front and back ends of bearing support 2 of forward and backward gland 3,4 is provided with O- ring seals 23,24 on the surface of contact of forward and backward gland 3,4 and bearing support 2; Offer an oil collecting ring 31,41 on the inner headed face of forward and backward gland 3,4 respectively, and on the inner side surface of forward and backward gland 3, offer the spill port 32,42 that is communicated with this oil collecting ring 31,41 respectively; Offer a scrobicular ring respectively on the outer side surface of forward and backward gland 3,4, inwardly be convexly equipped with an interstage sleeve on the inner side surface respectively;
Offer the oil hole 40 that is communicated with oil sump 22 on the interstage sleeve of rear pressing cover 4;
Roller bearing 5 is directly installed on the pump shaft 1 that is positioned at bearing bore 21 front portions; The inner ring of this roller bearing 5 and pump shaft 1 interference fit are also passed through first axle sleeve 11 and second axle sleeve, 12 axially locating, and the outer ring of roller bearing 5 and bearing bore 21 interference fit are also through the interstage sleeve axially locating on the forward and backward gland 3,4;
The inner side surface of two dustproof dishes 71,72 be provided with forward and backward gland 3,4 outer side surfaces on the corresponding sealing bulge loop of scrobicular ring, these two dustproof coils 71,72 and prevents that with it bulge loop is embedded in the mode in the scrobicular ring of forward and backward gland 3,4 and is fixed on the pump shaft 1 that is positioned at forward and backward gland 3,4 outsides through Cock screw 70.
When pump operation, because driving first axle sleeve 11, the rotation of pump shaft 1 rotates, make the freely eccentric rotation of disc 6 through frictional force; The lubricant oil that drives in the oil sump 22 is fed in the bearing bore 21 continuously; Reach the effect to roller bearing 5 sufficient lubrications, even the oil level of oil sump 22 is lower, disc 6 also can provide lubricant oil to bearing lubrication; Stop screw 60 can limit disc 6 random rotation in bearing support 2, and lubricant oil is outwards splashed.When lubricant oil when pump shaft 1 axially spills, the oil collecting ring 31,41 on forward and backward gland 3,4 internal surfaces can be tackled the lubricant oil that is about to spill forward and backward gland 3,4, and lubricant oil is flow back in the bearing bore 21 through spill port 32,42.
Because between the inner headed face of forward and backward gland 3,4 and the pump shaft 1 is Spielpassung, can produce some and leak, and dustproof dish 71,72 can increases the sealing of forward and backward gland 3,4.Because dustproof dish 71,72 is fixed on the pump shaft 1 and rotates with pump shaft 1; Dustproof dish 71,72 rotates and not only can prevent oil leak; Can also prevent simultaneously that dust from getting in the bearing bore 21; And can cool off bearing bore 21, improve the working environment of bearing, improve the working life of bearing.
On lower end surface, outer side surface and the upper-end surface of bearing support 2, be provided with multi-disc radiating fin 20 in addition respectively in uniform way,, help the heat radiation of lubricant oil and bearing bore to increase heat diffusion area.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not the qualification that is used as the utility model; As long as in the connotation scope of the utility model, all will drop in claims scope of the utility model the above embodiment's variation, modification.
Claims (4)
1. a fore bearing structure that is used to start feed water pump is installed in the drive end of pump shaft and comprises bearing support and a forward and backward gland and a roller bearing, it is characterized in that, said rear bearing structure also comprises a disc and two dustproof dishes,
Said bearing support has superposed bearing bore and is positioned at the oil sump that is communicated with bearing bore of bottom;
Inwardly be convexly equipped with an interstage sleeve on the inner side surface of said forward and backward gland respectively, offer an oil inlet hole on the interstage sleeve of said rear pressing cover, said forward and backward gland is sleeved on the said pump shaft and is connected the top front and back ends of said bearing support;
Said roller bearing is directly installed on the pump shaft and is positioned at said bearing bore; The inner ring of this roller bearing is through first axle sleeve and the second axle sleeve axially locating, and the outer ring of said roller bearing is through the interstage sleeve axially locating on the said forward and backward gland;
Said disc is suspended on said first axle sleeve respectively and is connected on the said bearing support through a stop screw respectively, and the bottom of this disc is immersed in the said oil sump;
Said two dustproof dishes are separately fixed on the said pump shaft that is positioned at the said forward and backward gland outside.
2. the fore bearing structure that is used to start feed water pump according to claim 1; It is characterized in that; Offer an oil collecting ring on the inner headed face of said forward and backward gland respectively, and on the inner side surface of said forward and backward gland, offer the spill port that is communicated with said oil collecting ring respectively.
3. the fore bearing structure that is used to start feed water pump according to claim 1; It is characterized in that; Offer a scrobicular ring on the outer side surface of said forward and backward gland respectively; The inner side surface of said dustproof dish is provided with the sealing bulge loop corresponding with scrobicular ring, so that dustproof dish is embedded in the mode in the scrobicular ring of forward and backward gland and is fixed on the said pump shaft through Cock screw with its sealing bulge loop.
4. the fore bearing structure that is used to start feed water pump according to claim 1 is characterized in that, is provided with the multi-disc radiating fin on the lower end surface of said bearing support, outer side surface and the upper-end surface respectively in uniform way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118947 CN202597187U (en) | 2012-03-27 | 2012-03-27 | Fore bearing structure capable of starting feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220118947 CN202597187U (en) | 2012-03-27 | 2012-03-27 | Fore bearing structure capable of starting feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597187U true CN202597187U (en) | 2012-12-12 |
Family
ID=47314734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220118947 Expired - Lifetime CN202597187U (en) | 2012-03-27 | 2012-03-27 | Fore bearing structure capable of starting feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061517A (en) * | 2017-02-20 | 2017-08-18 | 浙江佳力科技股份有限公司 | Rolling bearing hydraulic withdrawal structure |
| CN109578316A (en) * | 2019-01-30 | 2019-04-05 | 吉林省宇琦泵业有限公司 | A kind of bearing in pump body of the interior extension bearing life for rinsing cooling system |
-
2012
- 2012-03-27 CN CN 201220118947 patent/CN202597187U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061517A (en) * | 2017-02-20 | 2017-08-18 | 浙江佳力科技股份有限公司 | Rolling bearing hydraulic withdrawal structure |
| CN109578316A (en) * | 2019-01-30 | 2019-04-05 | 吉林省宇琦泵业有限公司 | A kind of bearing in pump body of the interior extension bearing life for rinsing cooling system |
| CN109578316B (en) * | 2019-01-30 | 2024-01-19 | 吉林省宇琦泵业有限公司 | Pump bearing body with internal flushing cooling system for prolonging bearing life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |