CN102192182A - Seal combined structure of centrifugal pump - Google Patents
Seal combined structure of centrifugal pump Download PDFInfo
- Publication number
- CN102192182A CN102192182A CN2011101281761A CN201110128176A CN102192182A CN 102192182 A CN102192182 A CN 102192182A CN 2011101281761 A CN2011101281761 A CN 2011101281761A CN 201110128176 A CN201110128176 A CN 201110128176A CN 102192182 A CN102192182 A CN 102192182A
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- seal
- ring
- dynamic ring
- dynamic
- storage tank
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Abstract
The invention relates to a seal combined structure of a centrifugal pump. The structure comprises an impeller (101), a dynamic ring (102), a rotary main shaft (103), a pump cover (104), a mechanical seal, a shaft sleeve (105), an insolating liquid storage tank and the like; the structure is characterized in that the dynamic ring (102) of a first level mechanical seal is installed on the rotary shaft (103) between the impellor (101) and the dynamic ring (102), and a compensation ring (202) is installed on the pump cover (104); the dynamic ring (301) of a second level mechanical seal is installed on the rotary shaft (103) between the dynamic ring (102) and a shaft sleeve (105), and a compensation ring (302) is installed on the pump cover (104); a seal chamber (5) is formed between a first level seal and a second level seat; and the seal chamber (5) is communicated with the insolating liquid storage tank (409). The structure provided by the invention has the following advantages: firstly, non-compensation rings are adopted for two mechanical seals as the dynamic rings, the compensation rings are directly installed on the pump cover, the minimum linkage of axial size is realized, the suspending arm length of the impellor is shortened, and especially the structure is good for the stable operation of the high-speed centrifugal pump; and secondly, the seal chamber between the two mechanical seals is communicated with the insolating liquid storage tank, a transmitting medium can be avoided from being leaked to the external space through a rotary shaft.
Description
Technical field
The present invention relates to a kind of seal combination structure of seal combination structure, particularly a kind of high speed centrifugal pump of centrifugal pump.
Background technique
In known technology, the centrifugal pump seal that existing application is carried in liquid has packing seal and mechanical seal, this sealing configuration can't avoid fed sheet of a media to be leaked towards space outerpace by running shaft, carries the inflammable and explosive liquid medium of poisonous and harmful so can't satisfy, can't pollution abatement.The seal combination structure that ZL96201732.9 and ZL200520025247.5 propose a kind of centrifugal pump solves the problem that liquid medium leaks, this structure all adopts the combination of packing seal and mechanical seal, the gland sealed leakage rate is big, per minute will reach 20, easily environment is polluted, more can not be applicable to the axle envelope of high speed centrifugal pump high speed rotation, the axle of high speed rotating is destructive big to packing seal, burns out easily.
Summary of the invention
The objective of the invention is leakage problem, propose a kind of seal combination structure of centrifugal pump, make the media implementation of conveying not have leakage at existing sealing configuration existence.
Technological scheme of the present invention is: a kind of seal combination structure of centrifugal pump, it mainly comprises impeller 101, dynamic ring 102, rotary main shaft 103, pump cover 104, mechanical seal, axle sleeve 105 and insulating liquid liquid storage tank 409 etc., it is characterized in that: rotary main shaft 103 middle parts below impeller 101 are with a dynamic ring 102, and on the rotary main shaft below the dynamic ring 102 103, be with an axle sleeve 105, the bottom of dynamic ring 102 is provided with a chassis 106, is provided with dynamic trough 107 on chassis 106; The rotating ring 201 of first order mechanical seal is installed on the rotary main shaft 103 between impeller 101 and the dynamic ring 102, and the compensated loop 202 of first order mechanical seal is installed on the pump cover 104 between dynamic ring 102 and the impeller 101 and with medium and contacts; The rotating ring 301 of second level mechanical seal is installed on the rotary main shaft 103 between dynamic ring 102 and the axle sleeve 105, and the compensated loop 302 of second level mechanical seal is installed on the pump cover 104 of below, dynamic rings 102 chassis; Form Seal cage 5 between first order sealing and the second level sealing; Joint 401, joint 402 with Seal cage 5 UNICOMs are installed on pump cover 104, joint 401, joint 402 connect with joint 404, the pipeline 6 that joint 405 is connected on being installed in insulating liquid liquid storage tank 409 with auxiliary pipeline respectively, form the isolation circulatory system at night.
The present invention takes such scheme, have following technique effect: 1. all to adopt uncompensated ring be rotating ring in two mechanical seals, compensated loop is directly installed on the pump cover, the minimum that has realized axial dimension connects, shortened the jib-length of impeller, control the form and position tolerance of impeller effectively, helped the smooth running of pump, be particularly conducive to the smooth running of high speed centrifugal pump; 2. between two mechanical seals dynamic ring and insulating liquid liquid storage tank have been installed,, have been transported to liquid storage tank by dynamic ring and store, can avoid fed sheet of a media to pass through the axial rotary space outerpace and leak if small leakage takes place in first order mechanical seal.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further details.
Fig. 1 is the cross-sectional view of the seal combination structure of the centrifugal pump of invention.
Fig. 2 is dynamic ring 102 cross-sectional view.
Fig. 3 is the left view of Fig. 2.
Among the figure: 107. dynamic troughs, 201. rotating rings, 202. compensated loops, 301. rotating rings, 302. compensated loops, 401. joints, 402. joints, 403. sewage draining exits, 404. joints, 405. joints, 406. pressure gauges, 407. evacuation ports, 408. level meters, 409. insulating liquid liquid storage tanks, 5. Seal cages, 6. pipelines of 101. impellers, 102. dynamic rings, 103. rotary main shafts, 104. pump covers, 105. axle sleeves, 106. chassis
Embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the seal combination structure of a kind of centrifugal pump of the present invention, it mainly comprises impeller 101, dynamic ring 102, rotary main shaft 103, pump cover 104, mechanical seal, axle sleeve 105 and insulating liquid liquid storage tank 409 etc., it is characterized in that: rotary main shaft 103 middle parts below impeller 101 are with a dynamic ring 102, and on the rotary main shaft below the dynamic ring 102 103, be with an axle sleeve 105, the bottom of dynamic ring 102 is provided with a chassis 106, on chassis 106, be provided with dynamic trough 107, drive the insulating liquid circulation during dynamic trough 107 rotations; The rotating ring 201 of first order mechanical seal is installed on the rotary main shaft 103 between impeller 101 and the dynamic ring 102, and the compensated loop 202 of first order mechanical seal is installed on the pump cover 104 between dynamic ring 102 and the impeller 101 and with medium and contacts; The rotating ring 301 of second level mechanical seal is installed on the rotary main shaft 103 between dynamic ring 102 and the axle sleeve 105, and the compensated loop 302 of second level mechanical seal is installed on the pump cover 104 of below, dynamic rings 102 chassis; Form Seal cage 5 between first order sealing and the second level sealing; Joint 401, joint 402 with Seal cage 5 UNICOMs are installed on pump cover 104, joint 401, joint 402 connect with joint 404, the pipeline 6 that joint 405 is connected on being installed in insulating liquid liquid storage tank 409 with auxiliary pipeline respectively, form the isolation circulatory system at night.
The seal combination structure of described a kind of centrifugal pump, it is characterized in that: level meter 408 and pressure gauge 406 are installed on insulating liquid liquid storage tank 409, and on insulating liquid liquid storage tank 409, also being provided with sewage draining exit 403 and evacuation port 407, the centrifugal force that is produced by dynamic ring 102 makes insulating liquid produce periodic duty.If first order mechanical seal is leaked, by dynamic ring 102 medium transport of leaking is stored to liquid storage tank 409, when arriving design loads, the level meter 408 of liquid storage tank 409 or pressure gauge 406 send alarm signal, and be discharged to by sewage draining exit 403 in the container of appointment or by evacuation port 407 and be discharged to the place that torch etc. can be accepted leaking medium, can avoid fed sheet of a media to pass through running shaft and directly leak to space outerpace.
Claims (2)
1. the seal combination structure of a centrifugal pump, it mainly comprises impeller (101), dynamic ring (102), rotary main shaft (103), pump cover (104), mechanical seal, axle sleeve (105) and insulating liquid liquid storage tank (409) etc., it is characterized in that: rotary main shaft (103) middle part in impeller (101) below is with a dynamic ring (102), and on the rotary main shaft (103) of dynamic ring (102) below, be with an axle sleeve (105), the bottom of dynamic ring (102) is provided with a chassis (106), is provided with dynamic trough (107) on chassis (106); The rotating ring of first order mechanical seal (201) is installed on the rotary main shaft (103) between impeller (101) and the dynamic ring (102), and the compensated loop of first order mechanical seal (202) is installed in dynamic ring (102) and goes up and contact with medium with the pump cover (104) between the impeller (101); The rotating ring of second level mechanical seal (301) is installed on the rotary main shaft (103) between dynamic ring (102) and the axle sleeve (105), and the compensated loop of second level mechanical seal (302) is installed on the pump cover (104) of below, dynamic ring (102) chassis; Form Seal cage (5) between first order sealing and the second level sealing; Joint (401), joint (402) with Seal cage (5) UNICOM are installed on pump cover (104), and joint (401), joint (402) are respectively with auxiliary pipeline with the joint (404) on being installed in insulating liquid liquid storage tank (409), pipeline (6) connection that joint (405) is connected.
2. the seal combination structure of a kind of centrifugal pump according to claim 1, it is characterized in that: level meter (408) and pressure gauge (406) are installed on insulating liquid liquid storage tank (409), and on insulating liquid liquid storage tank (409), are provided with blowdown (403) and evacuation port (407).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101281761A CN102192182A (en) | 2011-05-17 | 2011-05-17 | Seal combined structure of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101281761A CN102192182A (en) | 2011-05-17 | 2011-05-17 | Seal combined structure of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102192182A true CN102192182A (en) | 2011-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101281761A Pending CN102192182A (en) | 2011-05-17 | 2011-05-17 | Seal combined structure of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102192182A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0583781A1 (en) * | 1992-08-20 | 1994-02-23 | Nikkiso Co., Ltd. | Blood pump |
| CN2263227Y (en) * | 1996-01-25 | 1997-09-24 | 电力工业部电力建设研究所 | Sealing combined structure of centrifugal pump |
| CN2769568Y (en) * | 2005-02-01 | 2006-04-05 | 张志军 | Centrifugal pump assembly seal |
| CN201232656Y (en) * | 2008-06-10 | 2009-05-06 | 宁波精科机械密封件制造有限公司 | Mechanical sealing device for centrifugal pump |
| CN201297287Y (en) * | 2008-09-18 | 2009-08-26 | 北京航天石化技术装备工程公司 | Centrifugal pump applicable to high-temperature and high-solidifying point media |
| CN101649834A (en) * | 2009-09-08 | 2010-02-17 | 合肥通用机械研究院 | Hydrostatic and hydrodynamic combined type three-stage mechanical seal device for nuclear main pump |
| US20110091319A1 (en) * | 2007-03-16 | 2011-04-21 | Vrc, Inc. | Centrifugal water pump |
| CN202108770U (en) * | 2011-05-17 | 2012-01-11 | 浙江天德泵业有限公司 | Sealing combination structure of centrifugal pump |
-
2011
- 2011-05-17 CN CN2011101281761A patent/CN102192182A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0583781A1 (en) * | 1992-08-20 | 1994-02-23 | Nikkiso Co., Ltd. | Blood pump |
| CN2263227Y (en) * | 1996-01-25 | 1997-09-24 | 电力工业部电力建设研究所 | Sealing combined structure of centrifugal pump |
| CN2769568Y (en) * | 2005-02-01 | 2006-04-05 | 张志军 | Centrifugal pump assembly seal |
| US20110091319A1 (en) * | 2007-03-16 | 2011-04-21 | Vrc, Inc. | Centrifugal water pump |
| CN201232656Y (en) * | 2008-06-10 | 2009-05-06 | 宁波精科机械密封件制造有限公司 | Mechanical sealing device for centrifugal pump |
| CN201297287Y (en) * | 2008-09-18 | 2009-08-26 | 北京航天石化技术装备工程公司 | Centrifugal pump applicable to high-temperature and high-solidifying point media |
| CN101649834A (en) * | 2009-09-08 | 2010-02-17 | 合肥通用机械研究院 | Hydrostatic and hydrodynamic combined type three-stage mechanical seal device for nuclear main pump |
| CN202108770U (en) * | 2011-05-17 | 2012-01-11 | 浙江天德泵业有限公司 | Sealing combination structure of centrifugal pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |