CN104895828A - Circulating seawater pump shaft seal device - Google Patents
Circulating seawater pump shaft seal device Download PDFInfo
- Publication number
- CN104895828A CN104895828A CN201410079455.7A CN201410079455A CN104895828A CN 104895828 A CN104895828 A CN 104895828A CN 201410079455 A CN201410079455 A CN 201410079455A CN 104895828 A CN104895828 A CN 104895828A
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- China
- Prior art keywords
- packing
- gland
- pump shaft
- water
- seal cage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to an auxiliary device of a nuclear power plant seawater system, and in particular, discloses a circulating seawater pump shaft seal device. The device comprises a packing gland, a packing filler box, packs, a water seal ring, flushing water pipes and a water chamber gland, wherein the packing gland is integrally molded by a gland upper body provided with a water cavity inside, a drainage pipe connected to the left side wall of the gland upper body and communicated with the water cavity and a gland lower body connected to the lower part of the gland upper body; three packs coating a pump shaft are arranged at the lower part of the packing gland from top to bottom; the water seal ring is arranged between the lower part of the second pack and the upper part of the third pack; the packing filler box is arranged outside the packs and the water seal ring; and the flushing water pipes are respectively arranged on the outer walls of the left and right sides of the packing filler box. The device effectively solves the problems of shaft seal water throwing, abnormal temperature and pump shaft abrasion in the prior art, saves huge maintenance costs, and prolongs the service life of the pump shaft.
Description
Technical field
The present invention relates to a kind of nuclear power station sea water service system auxiliary device, be specifically related to a kind of circulating seawer pump shaft sealing device.
Background technique
Nuclear power station sea water service system is equipped with some circulating seawer pumps.In actual use, easily there is the defects such as packing heating, the excessive and pump shaft wearing and tearing of leakage quantity in circulating seawer pump shaft end seal place.Easily deposit a large amount of silt at circulating seawer pump shaft sealing device packing place, the severe working environment of sea water pump causes the pump shaft serious wear at packing position, the high recirculating cooling water system operational reliability that causes of ratio of defects reduces, these safe operations being nuclear power station cause hidden danger, also make nuclear power station often pay the pump shaft rehabilitation expense of great number.
Summary of the invention
The technical problem to be solved in the present invention is to provide the circulating seawer pump shaft sealing device of a kind of good airproof performance, life-span length.
For solving the problems of the technologies described above, technological scheme provided by the present invention is:
A kind of circulating seawer pump shaft sealing device, it comprises packing gland, packing filling letter, first packing, second packing, 3rd packing, seal cage, wash tub pipe, pad and hydroecium gland, packing gland, first packing, second packing, 3rd packing and seal cage are all enclosed within pump shaft outside, the bottom of packing gland is connected with the top of the first packing, first packing bottom is connected with the second packing top, second packing bottom is connected with seal cage top, seal cage bottom is connected with the 3rd packing top, first packing, second packing, the outside of the 3rd packing and seal cage is provided with packing filling letter, the top of packing filling letter is connected with the bottom of packing gland, the outer wall of packing filling letter is provided with the through hole be communicated with seal cage internal cavity, a wash tub pipe is provided with in this through hole, the bottom of packing filling letter is connected with the top of hydroecium gland, the bottom of hydroecium gland is connected with hydroecium top, the top of hydroecium gland is connected with the bottom of the 3rd packing.
The gland upper body that described packing gland has water chamber by inside, the gland lower body being connected to the drainage tube be communicated with water chamber on the left side wall of gland upper body and being connected to gland upper body lower wall form.
The inside of described seal cage has cavity.
The through hole be communicated with seal cage internal cavity on described packing filling letter is two, is respectively provided with a wash tub pipe in two through holes.
Pad is provided with between described wash tub pipe and packing filling letter.
Advantageous Effects of the present invention is:
(1) method that cooperatively interacts by using seal cage and packing of a kind of circulating seawer pump shaft sealing device provided by the present invention, the shaft seal water dumping effectively solving habitually in the past to occur, temperature anomaly and pump shaft wear problem, thus significantly shorten maintenance duration, save out huge maintenance cost.
(2) the present invention rinses fresh water prevention seawater overflow to the design of packing by introducing, and packing is effectively protected, extends working life.
Accompanying drawing explanation
Fig. 1 is a kind of circulating seawer pump shaft sealing device schematic diagram provided by the present invention.
In figure: 1. pump shaft, 3. packing filling letter, 401. first packings, 402. second packings, 403. the 3rd packing, 5. seal cage, 6. wash tub pipe, 7. pad, 8. hydroecium gland, 9. hydroeciums,
2. packing gland, 201. gland upper bodies, 202. drainage tubes, 203. gland lower bodies.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, a kind of circulating seawer pump shaft sealing device provided by the present invention comprises packing gland 2, packing filling letter 3, first packing 401, second packing 402, the 3rd packing 403, seal cage 5, wash tub pipe 6, pad 7 and hydroecium gland 8.The packing gland 2 be enclosed within outside pump shaft 1 is had the cylinder annular of water chamber gland upper body 201 by inside, the gland lower body 203 being connected to the drainage tube 202 be communicated with water chamber on the left side wall of gland upper body and the solid cylinder annular that is connected to gland upper body lower wall are made of one piece.Packing gland 2 and pump shaft 1 Spielpassung, gap is 1mm.Packing gland 2 bottom is provided with circular the first packing 401, second packing 402, seal cage 5 and the 3rd packing 403 that are enclosed within pump shaft 1 outside from top to bottom.The bottom of packing gland 2 is connected with the top seal of the first packing 401.Compact siro spinning technology between first packing 401 bottom and the second packing 402 top.Second packing 402 bottom and seal cage 5 top compact siro spinning technology.Seal cage 5 bottom and the 3rd packing 403 top compact siro spinning technology.The inside of seal cage 5 has cavity.First packing 401, second packing 402, the 3rd packing 403 and pump shaft 1 all interference fit.Seal cage 5 and pump shaft 1 Spielpassung, gap is 1mm.First packing 401, second packing 402, the 3rd packing 403 and the outside of seal cage 5 are provided with a packing filling letter 3 be connected with the outer side seal of the first packing 401, second packing 402, the 3rd packing 403 and seal cage 5 respectively.The top of packing filling letter 3 is connected with the lower seal of packing gland 2.The left and right sides outer wall of packing filling letter 3 has all separately a through hole be communicated with seal cage 5 internal cavity, in two through holes, be provided with a wash tub pipe 6 all separately.Sealed by pad 7 between wash tub pipe 6 and packing filling letter 3.The bottom of packing filling letter 3 is connected with the top seal of hydroecium gland 8, and the bottom of hydroecium gland 8 is connected with hydroecium 9 top.The top of hydroecium gland 8 is connected with the lower seal of the 3rd packing 403.The inner side of hydroecium gland 8 and pump shaft 1 Spielpassung, gap is 1mm.
Working procedure of the present invention is: rinse fresh water and enter seal cage 7 through wash tub pipe 6, then rinse fresh water and be divided into two-way: curb pump shaft 1 outer surface up, flow through the second packing 402 and the first packing 401, lubrication and cooling is carried out to the second packing 402 and the first packing 401, then enter the water chamber in gland upper body 201, finally flow out from drainage tube 202.Fresh water is rinsed along pump shaft 1 outer surface down in another road, flows through the 3rd packing 403, to the 3rd packing 403 lubrication, then enters hydroecium 9, and these road current can also stop the seawater overflow containing silt in hydroecium 9 around packing, affect the performance of packing.
Claims (5)
1. a circulating seawer pump shaft sealing device, it is characterized in that: it comprises packing gland (2), packing filling letter (3), first packing (401), second packing (402), 3rd packing (403), seal cage (5), wash tub pipe (6), pad (7) and hydroecium gland (8), packing gland (2), first packing (401), second packing (402), it is outside that 3rd packing (403) and seal cage (5) are all enclosed within pump shaft (1), the bottom of packing gland (2) is connected with the top of the first packing (401), first packing (401) bottom is connected with the second packing (402) top, second packing (402) bottom is connected with seal cage (5) top, seal cage (5) bottom is connected with the 3rd packing (403) top, first packing (401), second packing (402), the outside of the 3rd packing (403) and seal cage (5) is provided with packing filling letter (3), the top of packing filling letter (3) is connected with the bottom of packing gland (2), the outer wall of packing filling letter (3) is provided with the through hole be communicated with seal cage (5) internal cavity, a wash tub pipe (6) is provided with in this through hole, the bottom of packing filling letter (3) is connected with the top of hydroecium gland (8), the bottom of hydroecium gland (8) is connected with hydroecium (9) top, the top of hydroecium gland (8) is connected with the bottom of the 3rd packing (403).
2. a kind of circulating seawer pump shaft sealing device according to claim 1, is characterized in that: described packing gland (2) by inside have water chamber gland upper body (201), be connected to the drainage tube (202) be communicated with water chamber on the left side wall of gland upper body and the gland lower body (203) that is connected to gland upper body lower wall forms.
3. a kind of circulating seawer pump shaft sealing device according to claim 2, is characterized in that: the inside of described seal cage (5) has cavity.
4. a kind of circulating seawer pump shaft sealing device according to claim 3, is characterized in that: the through hole be communicated with seal cage (5) internal cavity on described packing filling letter (3) is two, is respectively provided with a wash tub pipe (6) in two through holes.
5. a kind of circulating seawer pump shaft sealing device according to claim 4, is characterized in that: be provided with pad (7) between described wash tub pipe (6) and packing filling letter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079455.7A CN104895828A (en) | 2014-03-06 | 2014-03-06 | Circulating seawater pump shaft seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079455.7A CN104895828A (en) | 2014-03-06 | 2014-03-06 | Circulating seawater pump shaft seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104895828A true CN104895828A (en) | 2015-09-09 |
Family
ID=54028710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410079455.7A Pending CN104895828A (en) | 2014-03-06 | 2014-03-06 | Circulating seawater pump shaft seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895828A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230402A (en) * | 2020-02-28 | 2020-06-05 | 岭东核电有限公司 | Repair process for drive support frame shell of nuclear power plant |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200991655Y (en) * | 2006-11-09 | 2007-12-19 | 北京航天石化技术装备工程公司 | Rotary upper-axle sealing system of crushing device |
| CN201372955Y (en) * | 2008-10-21 | 2009-12-30 | 昆明嘉和科技开发有限公司 | No-leakage double-filling sealing device with easy assembly and disassembly |
| CN202056082U (en) * | 2011-05-27 | 2011-11-30 | 大连鸿泽泵业有限公司 | Mineral draining pump pressure limiting sleeve mechanism |
| CN103089695A (en) * | 2012-12-09 | 2013-05-08 | 重庆盾铭电磁阀有限公司 | Sealing structure for asbestos packing of water pump bearing |
| CN203081862U (en) * | 2012-12-29 | 2013-07-24 | 石家庄联合盛鑫泵业股份有限公司 | Slurry pump with low rinsing water pressure |
| CN203730392U (en) * | 2014-03-06 | 2014-07-23 | 江苏核电有限公司 | Circulating seawater pump shaft sealing device |
-
2014
- 2014-03-06 CN CN201410079455.7A patent/CN104895828A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200991655Y (en) * | 2006-11-09 | 2007-12-19 | 北京航天石化技术装备工程公司 | Rotary upper-axle sealing system of crushing device |
| CN201372955Y (en) * | 2008-10-21 | 2009-12-30 | 昆明嘉和科技开发有限公司 | No-leakage double-filling sealing device with easy assembly and disassembly |
| CN202056082U (en) * | 2011-05-27 | 2011-11-30 | 大连鸿泽泵业有限公司 | Mineral draining pump pressure limiting sleeve mechanism |
| CN103089695A (en) * | 2012-12-09 | 2013-05-08 | 重庆盾铭电磁阀有限公司 | Sealing structure for asbestos packing of water pump bearing |
| CN203081862U (en) * | 2012-12-29 | 2013-07-24 | 石家庄联合盛鑫泵业股份有限公司 | Slurry pump with low rinsing water pressure |
| CN203730392U (en) * | 2014-03-06 | 2014-07-23 | 江苏核电有限公司 | Circulating seawater pump shaft sealing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230402A (en) * | 2020-02-28 | 2020-06-05 | 岭东核电有限公司 | Repair process for drive support frame shell of nuclear power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |