CN105090094A - Device for improving mechanical sealing of industrial centrifugal pump machine - Google Patents
Device for improving mechanical sealing of industrial centrifugal pump machine Download PDFInfo
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- CN105090094A CN105090094A CN201410716144.7A CN201410716144A CN105090094A CN 105090094 A CN105090094 A CN 105090094A CN 201410716144 A CN201410716144 A CN 201410716144A CN 105090094 A CN105090094 A CN 105090094A
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- Prior art keywords
- pump
- centrifugal pump
- regulating valve
- pump inlet
- valve
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Abstract
Disclosed is a device for improving mechanical sealing of an industrial centrifugal pump machine. The device comprises a circulating process pipeline and a regulating valve. One end of the circulating process pipeline is installed on the back surface of a pump inlet valve, and the other end of the circulating process pipeline is installed in the front of a pump outlet valve. The regulating valve is installed on the circulating process pipeline. The flow rate of part of process media returning to an inlet pipe in an outlet pipe of the centrifugal pump is regulated by controlling the regulating valve on the circulating process pipeline, so that the flow rate of the process media flowing back to a pump inlet changes; the pressure of the pump inlet media is not liable to change suddenly and accordingly the stability of the pump inlet media and the mechanical sealing of the centrifugal pump are improved.
Description
Art
The present invention relates to a kind of device improving industrial centrifugal pump mechanical sealing
Background technique
Generally, centrifugal pump many employings mechanical seal, mechanical seal is the key of centrifugal pump operation period length.Existing enterprise major part from introducing magnetic drive pump abroad, the no-leakage pumps such as canned motorpump improve the mechanical seal of pump, but due to technology immature, poor reliability, expensive, the shortcomings such as maintenance difficult, cannot be widely used.Mechanical seal requires higher to the working stability of centrifugal pump in running, centrifugal pump working stability depends on the stability of pump inlet medium, the impact of process conditions is subject in commercial plant, the component of centrifugal pump inlet medium and pressure can change, affect the operation stability of centrifugal pump, destroy its mechanical seal.And a kind of device improving mechanical face seals of centrifugal pumps can make these problems be well solved.
Summary of the invention
The object of this invention is to provide and a kind ofly change the operation stability that centrifugal pump inlet process conditions solve pump, improve the mechanical seal of centrifugal pump.
For achieving the above object, the present invention takes following technological scheme: a kind of device improving mechanical face seals of centrifugal pumps, it comprises circulation technology pipeline and regulating valve, the mounting point at circulation technology pipeline two ends after pump inlet valve with pump discharge valve before, regulating valve is arranged on circulation technology pipeline; When liquid enters pump inlet pipe, process through centrifugal pump makes its excavationg pump outer pipe, pump discharge pressure is greater than pump inlet pressure, in outer pipe, medium enters in circulation technology pipeline at centrifugal pump running, by the regulating valve on controlled circulation process pipelines, the flow being back to pump inlet medium is changed, and the import pressure medium of pump is unlikely to unexpected change, and then improves the import dielectric stability of pump.
The invention has the beneficial effects as follows: the present invention controls the process conditions of centrifugal pump inlet medium, improve the mechanical seal of centrifugal pump, extend the operation period of centrifugal pump.This method is simple, is easy to operation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is device sketch of the present invention.
.1, centrifugal pump in Fig. 1.2, pump discharge pipe.3, circulation technology pipeline.4, pump inlet pipe.5, regulating valve.6, pump inlet valve.7, pump discharge valve.
Embodiment
In FIG, a kind of device improving mechanical face seals of centrifugal pumps, it comprises circulation technology pipeline and regulating valve, between centrifugal pump 1 pump discharge pipe 2 to pump inlet pipe 4, circulation technology pipeline 3 is installed, circulation technology pipeline 3 is installed mounting point, regulating valve 5 circulation technology pipeline 3 one end after pump inlet valve 6, the other end mounting point is before pump discharge valve 7.Circulation technology pipeline 3 is installed regulating valve 5.When liquid enters pump inlet pipe, process through centrifugal pump makes its excavationg pump outer pipe, pump discharge pressure is greater than pump inlet pressure, in outer pipe, medium enters in circulation technology pipeline at centrifugal pump running, by the regulating valve on controlled circulation process pipelines, the flow being back to pump inlet medium is changed, and the import pressure medium of pump is unlikely to unexpected change, and then improves the import dielectric stability of pump.
Claims (2)
1. improve a device for industrial centrifugal pump mechanical sealing, comprise: circulation technology pipeline, regulating valve; It is characterized in that: the mounting point at circulation technology pipeline two ends must be after pump inlet valve with pump discharge valve before, regulating valve is arranged on circulation technology pipeline.
2. circulation technology pipeline according to claim 1, it is characterized in that: regulated the flow being back to pump inlet pipe by the regulating valve on circulation technology pipeline, the rate-of flow being back to pump inlet pipe is changed, stablizes the import pressure medium of pump, improve the mechanical seal of pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410716144.7A CN105090094A (en) | 2014-12-02 | 2014-12-02 | Device for improving mechanical sealing of industrial centrifugal pump machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410716144.7A CN105090094A (en) | 2014-12-02 | 2014-12-02 | Device for improving mechanical sealing of industrial centrifugal pump machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090094A true CN105090094A (en) | 2015-11-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410716144.7A Pending CN105090094A (en) | 2014-12-02 | 2014-12-02 | Device for improving mechanical sealing of industrial centrifugal pump machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090094A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863900A (en) * | 2015-06-05 | 2015-08-26 | 安徽瀚洋节能科技有限公司 | Process for mechanical sealing running protection of industrial centrifugal pump |
| CN104863864A (en) * | 2015-05-26 | 2015-08-26 | 安徽瀚洋节能科技有限公司 | Device for improving mechanical sealing performance of industrial centrifugal pump |
| CN104879321A (en) * | 2015-05-31 | 2015-09-02 | 安徽瀚洋节能科技有限公司 | Mechanically sealed industrial centrifugal pump |
| CN105781955A (en) * | 2016-05-23 | 2016-07-20 | 肥西县鑫山机械厂 | Centrifugal pump with industrial mechanical seal |
| CN106089750A (en) * | 2016-06-24 | 2016-11-09 | 合肥欧克斯新型建材有限公司 | A kind of device improving industrial centrifugal pump mechanical sealing |
| CN106089748A (en) * | 2016-06-24 | 2016-11-09 | 合肥欧克斯新型建材有限公司 | A kind of industrial centrifugal pump mechanical sealing running protection technique |
Citations (5)
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| CN2244110Y (en) * | 1995-06-09 | 1997-01-01 | 凌玺 | Small backflow external circulation centrifugal pump seal device |
| CN1740574A (en) * | 2005-08-19 | 2006-03-01 | 浙江大学 | Ejector capable of raising the cavitation performance of centrifugal pump |
| CN102212186A (en) * | 2011-03-11 | 2011-10-12 | 浙江万凯新材料有限公司 | Mechanical sealing, lubricating, cooling and circulating system of PET (poly(ethylene terephthalate)) final polymerization kettle |
| CN102797695A (en) * | 2012-08-17 | 2012-11-28 | 金庆明 | Cyclic protection control system and cyclic protection control method for mechanical seal |
| EP2672121A1 (en) * | 2012-06-06 | 2013-12-11 | Alstom Technology Ltd | Pump Shaft Sealing Device |
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2014
- 2014-12-02 CN CN201410716144.7A patent/CN105090094A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244110Y (en) * | 1995-06-09 | 1997-01-01 | 凌玺 | Small backflow external circulation centrifugal pump seal device |
| CN1740574A (en) * | 2005-08-19 | 2006-03-01 | 浙江大学 | Ejector capable of raising the cavitation performance of centrifugal pump |
| CN102212186A (en) * | 2011-03-11 | 2011-10-12 | 浙江万凯新材料有限公司 | Mechanical sealing, lubricating, cooling and circulating system of PET (poly(ethylene terephthalate)) final polymerization kettle |
| EP2672121A1 (en) * | 2012-06-06 | 2013-12-11 | Alstom Technology Ltd | Pump Shaft Sealing Device |
| CN102797695A (en) * | 2012-08-17 | 2012-11-28 | 金庆明 | Cyclic protection control system and cyclic protection control method for mechanical seal |
Non-Patent Citations (2)
| Title |
|---|
| W.S.TINNEY H.J.KNOLL C.H.DIEHL: "用循环回路系统延长机械密封寿命", 《化工炼油机械通讯》 * |
| 申兰平: "探讨一种提高离心泵机械密封寿命的方法", 《通用机械》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863864A (en) * | 2015-05-26 | 2015-08-26 | 安徽瀚洋节能科技有限公司 | Device for improving mechanical sealing performance of industrial centrifugal pump |
| CN104879321A (en) * | 2015-05-31 | 2015-09-02 | 安徽瀚洋节能科技有限公司 | Mechanically sealed industrial centrifugal pump |
| CN104863900A (en) * | 2015-06-05 | 2015-08-26 | 安徽瀚洋节能科技有限公司 | Process for mechanical sealing running protection of industrial centrifugal pump |
| CN105781955A (en) * | 2016-05-23 | 2016-07-20 | 肥西县鑫山机械厂 | Centrifugal pump with industrial mechanical seal |
| CN106089750A (en) * | 2016-06-24 | 2016-11-09 | 合肥欧克斯新型建材有限公司 | A kind of device improving industrial centrifugal pump mechanical sealing |
| CN106089748A (en) * | 2016-06-24 | 2016-11-09 | 合肥欧克斯新型建材有限公司 | A kind of industrial centrifugal pump mechanical sealing running protection technique |
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Application publication date: 20151125 |
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| WD01 | Invention patent application deemed withdrawn after publication |