CN105465053A - Self-circulation flushing system of seawater circulating pump shaft seal - Google Patents
Self-circulation flushing system of seawater circulating pump shaft seal Download PDFInfo
- Publication number
- CN105465053A CN105465053A CN201510982681.0A CN201510982681A CN105465053A CN 105465053 A CN105465053 A CN 105465053A CN 201510982681 A CN201510982681 A CN 201510982681A CN 105465053 A CN105465053 A CN 105465053A
- Authority
- CN
- China
- Prior art keywords
- shaft seal
- self
- rinse
- pump shaft
- loopa
- Prior art date
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
Abstract
The invention discloses a self-circulation flushing system of a seawater circulating pump shaft seal. The self-circulation flushing system of the seawater circulating pump shaft seal comprises an externally connected flushing pipeline, a shaft seal flushing pipeline and a waste liquid circulation pipeline. The externally connected flushing pipeline comprises externally connected flushing equipment connected with a sealed water tank; a liquid level indicator is arranged in a flushing water tank; the shaft seal flushing pipeline comprises at least one booster pump group which is connected with a flushing water inlet of the shaft seal through a check valve; a filter is arranged at a flushing water inlet of each booster pump group, and the other end of each filter is connected with the sealed water tank; the waste liquid circulation pipeline comprises a waste liquid pipeline connected with a waste liquid outlet of a shaft sleeve; a flow indicator is arranged on the waste liquid pipeline, and the other end of the waste liquid pipeline is connected into the sealed water tank. The self-circulation flushing system of the seawater circulating pump shaft seal does not need to continuously provide an externally connected water source of flushing water or continuously discharge waste liquid to a waste liquid collection system. Continuous and stable impurity-free flushing water is provided for the seawater circulating pump shaft seal through self circulation of the shaft seal flushing water.
Description
Technical field
The present invention relates to a kind of seawater circulation Pump Shaft Seal self-loopa rinse-system.
Background technique
It is large and have feedwater and the circulating water application of certain lift demand that sea water circulating pump is applicable to flow.Shaft seal is the seal arrangement preventing pump shaft and housing place from leaking and arranging.Conventional type of shaft sealing has packing seal, mechanical seal and power envelope.Recycle pump needs to carry out flushing to its shaft seal after a long time use and maintains its sealing.The seawater circulation Pump Shaft Seal sparge water system that current domestic nuclear power uses is comparatively simple, as shown in Figure 1, shaft seal 3 is arranged at outside axle sleeve 2, described axle sleeve 2 is sheathed on outside pump shaft 1, during cleaning, adopt external flushing water source 4 directly to rinse, sparge water flows out after entering Pump Shaft Seal 3 again, become waste liquid 5, be directly discharged into waste collection system.
But because external flushing water source is the flushing water source that many equipment shares, outer sparge water origin system easily occurs pressure surge, namely washing pressure change greatly, and instability of flow, has considerable influence to the shaft seal life-span.Under limit case, external sparge water source there will be cutout, shaft seal and the direct dry friction of axle sleeve, bearing sealing failure, and shaft sealing leakage is reported to the police, and sea water circulating pump is out of service, and generator of nuclear power station group reduces generated output, finally causes grid power to fluctuate.
Summary of the invention
In view of prior art exists above-mentioned defect, the object of the present invention is to provide a kind of seawater circulation Pump Shaft Seal self-loopa rinse-system.
Object of the present invention, will be achieved by the following technical programs:
Seawater circulation Pump Shaft Seal self-loopa rinse-system, comprises external flushing line, shaft seal flushing line and waste liquid circulation pipeline, and described external flushing line comprises the external flushing device be connected with a closed tank, is provided with liquid level indicator in described flush box;
Described shaft seal flushing line comprises at least one group of suction booster group, described suction booster group is connected with the sparge water import of shaft seal by stop valve, the sparge water import of described suction booster group is provided with a filter, and the other end of described filter is connected with described closed tank;
Described waste liquid circulation pipeline comprises the waste solution channel be connected with the waste liquid outlet of described shaft seal, described waste solution channel is provided with a flow indicator, and the other end of described waste solution channel is connected in described closed tank.
Preferably, the sparge water import of described stop valve and described shaft seal is also provided with a pressure indicator.
Preferably, described external flushing device is connected with described closed tank by control valve.
Preferably, the lower end of described closed tank is connected with a wastewater collection system by blowdown valve.
Preferably, described suction booster group is provided with two groups, is connected with check valve between described suction booster group and described stop valve.
Preferably, the flow of described suction booster group is 2m3/h-2.5m3/h, and lift is the single-stage horizontal pump of 0.22MPa-0.28MPa.
Preferably, described self-loopa rinse-system and PLC are electrically connected.
Preferably, the application of above-described arbitrary seawater circulation Pump Shaft Seal self-loopa rinse-system, the seawater circulation Pump Shaft Seal that described self-loopa rinse-system is applied to nuclear power station rinses.
The present invention gives prominence to effect: native system does not need the external flushing water source always providing sparge water, also not needing always to waste collection system discharge waste liquid, is the free from admixture sparge water that seawater circulation Pump Shaft Seal provides continous-stable by the self-loopa of shaft seal sparge water.
Below just accompanying drawing in conjunction with the embodiments, is described in further detail the specific embodiment of the present invention, is easier to understand, grasp to make technical solution of the present invention.
Accompanying drawing explanation
Fig. 1 is prior art circulating system structure schematic diagram.
Fig. 2 is circulating system structure schematic diagram of the present invention.
Embodiment
Present invention is disclosed a kind of seawater circulation Pump Shaft Seal self-loopa rinse-system, the seawater circulation Pump Shaft Seal that described self-loopa rinse-system is applied to nuclear power station rinses.As shown in Figure 2, external flushing line B, shaft seal flushing line C and waste liquid circulation pipeline A is comprised.Described external flushing line comprises the external flushing device 1 be connected with a closed tank 3, and described external flushing device 1 is connected with described closed tank 3 by control valve 2.In order to better monitor water level, in described flush box 3, be provided with liquid level indicator 4.
Described shaft seal flushing line C comprises two groups of suction booster groups, described suction booster group is connected with the sparge water import of shaft seal 15 by stop valve, the sparge water import of described suction booster group is provided with a filter 10, and the other end of described filter 10 is connected with described closed tank 3.Be connected with check valve between described suction booster group and described stop valve to better monitor the pressure of sparge water import, the sparge water import of described stop valve and described shaft seal is also provided with a pressure indicator 13.The filter screen order number of described filter 10 is 40 orders.
Two groups of suction booster groups are respectively the first suction booster group 8, second suction booster group 9, and the quantity of suction booster group arranges and can arrange as required.
Concrete, the both sides of described first suction booster group 8 are connected to the first stop valve 11; The both sides of described second suction booster group 9 are connected to the second stop valve 21.
Described waste liquid circulation pipeline A comprises the waste solution channel be connected with the waste liquid outlet of described shaft seal 15, described waste solution channel is provided with a flow indicator 14, and the other end of described waste solution channel is connected in described closed tank 3.Arranging combined filtering device and filtering out impurity in waste liquid of described waste liquid circulation pipeline, recycles shaft seal sparge water, has saved a large amount of sparge waters.The lower end of described closed tank 3 is connected with a wastewater collection system 6 by blowdown valve 7.
Consider that the medium of sea water circulating pump is seawater, all part materials touching sparge water select dual phase steel or seawater corrosionresisting stainless steel.The flow of described suction booster group is 2m3/h-2.5m3/h, and lift is the single-stage horizontal pump of 0.22MPa-0.28MPa.
Described system and PLC are electrically connected, and achieve display on the spot and the system whole-process automatic control of monitor data, automatic regulation function.
The below lower working procedure of the present invention of summary:
Open the valve of external flushing line B, allow external sparge water flow into closed tank 3, when in closed tank 3, water reaches setting value, liquid level indicator 4 shows high water-level alarm, and control valve 2 is closed automatically, and external sparge water can not flow into closed tank 3.Open stop valve and start the first suction booster group 8 or the second suction booster group 9, two suction booster groups can be selected one and be opened, arrange two pump groups also can better carry out for subsequent use simultaneously, when one of them breaks down, another suction booster group work can be adopted, or when a suction booster can not reach necessary requirement, the work of another pump group can be carried out.
The sparge water that closed tank is 3 li, by filter 10 and suction booster group, then enters shaft seal and rinses.After sparge water rinses shaft seal, waste liquid flows out through waste liquid circulation pipeline A from shaft seal and gets back to closed tank 3, after filter 10 filters, rinse shaft seal again by suction booster group.
Seawater circulation Pump Shaft Seal self-loopa rinse-system moisturizing flow process: when liquid level indicator 4 shows low alarm, control valve 2 is opened automatically, external sparge water flows into closed tank 3, when in closed tank, water reaches setting value, liquid level indicator 4 shows high water-level alarm, control valve 1 is closed automatically, and external sparge water can not flow into closed tank.During moisturizing, sea water circulating pump shaft seal self-loopa rinse-system can normally run.
Seawater circulation Pump Shaft Seal self-loopa rinse-system suction booster for subsequent use group Booting sequence: when the force value that pressure indicator 13 shows in shaft seal flushing pipe low to setting value time, another is organized suction booster group for subsequent use and will start, when pressure indicator display force value is elevated to setting value, the suction booster group first started will be closed.
Seawater circulation Pump Shaft Seal self-loopa rinse-system assists shaft seal to report to the police: when flow indicator 14 shows the warning of flow high flow capacity, the display of all the other instrument is normal, can judge bearing sealing failure.If do not processed, when closed tank liquid level is higher than setting value, but do not allow to stop sea water circulating pump, water unnecessary in closed tank will enter waste collection system by waste collection system pipeline.
The present invention is when occurring that external sparge water surprisingly stops, and seawater circulation Pump Shaft Seal self-loopa rinse-system still can provide stable sparge water to rinse seawater circulation Pump Shaft Seal.Avoid in external washing pressure fluctuation situation, the situation that the shaft seal life-span declines.
The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technological schemes formed, and all drops within protection scope of the present invention.
Claims (8)
1. seawater circulation Pump Shaft Seal self-loopa rinse-system, it is characterized in that: comprise external flushing line, shaft seal flushing line and waste liquid circulation pipeline, described external flushing line comprises the external flushing device be connected with a closed tank, is provided with liquid level indicator in described flush box;
Described shaft seal flushing line comprises at least one group of suction booster group, described suction booster group is connected with the sparge water import of shaft seal by stop valve, the sparge water import of described suction booster group is provided with a filter, and the other end of described filter is connected with described closed tank;
Described waste liquid circulation pipeline comprises the waste solution channel be connected with the waste liquid outlet of described shaft seal, described waste solution channel is provided with a flow indicator, and the other end of described waste solution channel is connected in described closed tank.
2. seawater circulation Pump Shaft Seal self-loopa rinse-system according to claim 1, is characterized in that: the sparge water import of described stop valve and described shaft seal is also provided with a pressure indicator.
3. seawater circulation Pump Shaft Seal self-loopa rinse-system according to claim 1, is characterized in that: described external flushing device is connected with described closed tank by control valve.
4. seawater circulation Pump Shaft Seal self-loopa rinse-system according to claim 1, is characterized in that: the lower end of described closed tank is connected with a wastewater collection system by blowdown valve.
5. seawater circulation Pump Shaft Seal self-loopa rinse-system according to claim 1, is characterized in that: described suction booster group is provided with two groups, is connected with check valve between described suction booster group and described stop valve.
6. seawater circulation Pump Shaft Seal self-loopa rinse-system according to claim 1, it is characterized in that: the flow of described suction booster group is 2m3/h-2.5m3/h, lift is the single-stage horizontal pump of 0.22MPa-0.28MPa.
7. seawater circulation Pump Shaft Seal self-loopa rinse-system according to claim 1, is characterized in that: described self-loopa rinse-system and PLC are electrically connected.
8. according to the application of the arbitrary seawater circulation Pump Shaft Seal self-loopa rinse-system described in claim 1 to 7, it is characterized in that: the seawater circulation Pump Shaft Seal that described self-loopa rinse-system is applied to nuclear power station rinses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510982681.0A CN105465053A (en) | 2015-12-24 | 2015-12-24 | Self-circulation flushing system of seawater circulating pump shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510982681.0A CN105465053A (en) | 2015-12-24 | 2015-12-24 | Self-circulation flushing system of seawater circulating pump shaft seal |
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| CN105465053A true CN105465053A (en) | 2016-04-06 |
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| CN201510982681.0A Pending CN105465053A (en) | 2015-12-24 | 2015-12-24 | Self-circulation flushing system of seawater circulating pump shaft seal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014959A (en) * | 2016-07-08 | 2016-10-12 | 广州文冲船厂有限责任公司 | Monitoring system of shaft seal of mechanical pump |
| CN107812599A (en) * | 2017-10-31 | 2018-03-20 | 广西华银铝业有限公司 | A kind of method for reducing launder washer tailing axle and underwater bearing bush abrasion |
| CN108252964A (en) * | 2018-01-23 | 2018-07-06 | 威乐(中国)水泵系统有限公司 | A kind of mechanical seal rinsing system |
| CN111570360A (en) * | 2020-04-24 | 2020-08-25 | 岭东核电有限公司 | Nuclear power station unit safety injection pipeline check valve sealing abnormity processing method |
| CN111577591A (en) * | 2020-05-29 | 2020-08-25 | 中铁工程装备集团有限公司 | Intelligent water seal flushing system and flushing method |
| CN113070258A (en) * | 2021-03-18 | 2021-07-06 | 中国船舶工业集团公司第七0八研究所 | Pile-washing and seawater taking device |
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| JPH11211008A (en) * | 1998-01-30 | 1999-08-06 | Toshiba Corp | Flashing water feeding device for mechanical seal portion of pump |
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| CN204419716U (en) * | 2015-01-21 | 2015-06-24 | 徐州长龙能源科技有限公司 | A kind of two-purpose Pulp pump machine envelope flush box |
| CN105179301A (en) * | 2015-09-28 | 2015-12-23 | 哈尔滨电气动力装备有限公司 | Passive emergent injection water supplying system for nuclear main pump |
| CN205277938U (en) * | 2015-12-24 | 2016-06-01 | 福斯流体控制（苏州）有限公司 | Sea water circulating pump bearing seal self -loopa rinse -system |
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2015
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| US4024911A (en) * | 1974-03-18 | 1977-05-24 | Combustion Engineering, Inc. | Pump shaft seal injection system |
| JPH11211008A (en) * | 1998-01-30 | 1999-08-06 | Toshiba Corp | Flashing water feeding device for mechanical seal portion of pump |
| CN201137598Y (en) * | 2007-12-24 | 2008-10-22 | 上海东方泵业(集团)有限公司 | Double end surface mechanical sealing flushing liquid constant pressure device for pump |
| CN201746410U (en) * | 2010-10-28 | 2011-02-16 | 厦门恩迪膜科技有限公司 | Pretreatment device for reverse osmosis pure water production |
| CN202768493U (en) * | 2012-07-10 | 2013-03-06 | 中国铝业股份有限公司 | Mechanical seal cooling system |
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| CN205277938U (en) * | 2015-12-24 | 2016-06-01 | 福斯流体控制（苏州）有限公司 | Sea water circulating pump bearing seal self -loopa rinse -system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014959A (en) * | 2016-07-08 | 2016-10-12 | 广州文冲船厂有限责任公司 | Monitoring system of shaft seal of mechanical pump |
| CN107812599A (en) * | 2017-10-31 | 2018-03-20 | 广西华银铝业有限公司 | A kind of method for reducing launder washer tailing axle and underwater bearing bush abrasion |
| CN108252964A (en) * | 2018-01-23 | 2018-07-06 | 威乐(中国)水泵系统有限公司 | A kind of mechanical seal rinsing system |
| CN111570360A (en) * | 2020-04-24 | 2020-08-25 | 岭东核电有限公司 | Nuclear power station unit safety injection pipeline check valve sealing abnormity processing method |
| CN111577591A (en) * | 2020-05-29 | 2020-08-25 | 中铁工程装备集团有限公司 | Intelligent water seal flushing system and flushing method |
| CN111577591B (en) * | 2020-05-29 | 2021-12-10 | 中铁工程装备集团有限公司 | Intelligent water seal flushing system and flushing method |
| CN113070258A (en) * | 2021-03-18 | 2021-07-06 | 中国船舶工业集团公司第七0八研究所 | Pile-washing and seawater taking device |
| CN113070258B (en) * | 2021-03-18 | 2022-10-14 | 中国船舶工业集团公司第七0八研究所 | Pile-washing and seawater taking device |
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Application publication date: 20160406 |