CN104454482A - Conveying pump provided with mechanical seal leakage detection device - Google Patents
Conveying pump provided with mechanical seal leakage detection device Download PDFInfo
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- CN104454482A CN104454482A CN201410597242.3A CN201410597242A CN104454482A CN 104454482 A CN104454482 A CN 104454482A CN 201410597242 A CN201410597242 A CN 201410597242A CN 104454482 A CN104454482 A CN 104454482A
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- mechanical seal
- fuel tank
- detection device
- hydraulic line
- leakage detection
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Abstract
The invention provides a conveying pump provided with a mechanical seal leakage detection device. The pump is characterized in that the mechanical seal leakage detection device is arranged on a conveying pump body, and the device is composed of two connectors, an oil tank, a hydraulic pump unit, an overflow valve, a liquid level sensor, a pressure sensor, a control panel and a hydraulic pipeline. The conveying pump has the advantages that firstly, leakage waste, environment pollution, fires, explosions and other accidents caused by mechanical seal leakage can be prevented when the conveying pump is used for conveying flammable and combustible liquid; secondly, work environment of a mechanical seal can be improved, and the service life of the mechanical seal is prolonged; thirdly, work reliability of the conveying pump can be improved, safe production is guaranteed, resources are saved, and environmental pollution caused by leakage is reduced.
Description
Technical field: the transfer pump mainly for delivery of flammable and combustible liquids that the present invention relates to a kind of improvement, particularly a kind of transfer pump with mechanical seal leakage detection device.
Background technique: in the industries such as existing oil, chemical industry, various inflammable and explosive liquid material all adopts transfer pump to carry.Existing conveying pump structure is see accompanying drawing 1, and primarily of the pump housing 1, main shaft 2, mechanical seal, on the pressure side assembly 3, mechanical seal 4, mechanical seal atmospheric side assembly 5, bearing 6 form for it.The deficiency that this kind of transfer pump in use exists is: 1, have potential safety hazard, be subject to fire, explosive accident; 2, easily there is environmental pollution; 3, easily there is waste, cause cost of production high.The existence of this series of problems, its main cause is, whether the existing transfer pump neither one that is in operation exists its mechanical seal and leak the device of monitoring; Because mechanical seal relies on dynamic and static ring friction pair to carry out dynamic seal (packing), and easily go wrong in long-term operation between friction pair; So, once the mechanical seal of transfer pump goes wrong and leaks, then its medium carried can be made to leak in a large number, not only cause waste, but also befouling environment, serious then breaking out of fire, explosive accident, cause serious security threat to the life and health of production and operator.In addition, existing transfer pump is not when the material carried possesses lubricity and operating mode is severe, and its working life can shorten greatly.
Summary of the invention: the object of the invention is to, for existing for carrying the transfer pump in use above shortcomings of flammable and combustible liquids, and a kind of transfer pump with mechanical seal leakage detection device is proposed, it can carry out Real-Time Monitoring to the mechanical seal of transfer pump, once there is the situation of leaking in mechanical seal, get final product and alarm, thus the problem avoiding fed sheet of a media to leak in a large number produces, thus also prevent the generation of the accidents such as waste, environmental pollution, fire, blast.
Object of the present invention can be realized by following technical proposals, a kind of transfer pump with mechanical seal leakage detection device, comprise transfer pump body, it is characterized in that, also comprise mechanical seal leakage detection device, it is made up of two connecting heads, fuel tank, oil hydraulic pump unit, relief valve, liquid level sensor, pressure transducer, control panel and hydraulic line; Two connecting heads respectively correspondence are located at transfer pump bulk mechanical Seal cage place, a connecting head is connected with oil hydraulic pump unit by hydraulic line, in this section of hydraulic line, be provided with pressure transducer, oil hydraulic pump unit is connected with fuel tank by hydraulic line, is provided with liquid level sensor in fuel tank; Another connecting head is connected with relief valve by hydraulic line, and relief valve is connected with fuel tank by hydraulic line; Pressure transducer and liquid level sensor are all electrically connected with control panel, and being provided with in control panel reports to the police is arranged.
For making grasp when patrolling and examining the liquid level of auxiliary seal liquid and the situation of pressure in fuel tank, in fuel tank, be provided with level meter; Pressure gauge is provided with in the hydraulic line being provided with pressure transducer.
Run under optimum working temperature to make detection device, temperature transducer, thermometer, duct thermostat is provided with in fuel tank, in the hydraulic line that relief valve is connected with fuel tank, be provided with duct thermostat, temperature transducer and duct thermostat are electrically connected with control panel.
For preventing having impurity to damage mechanical seal in oil, in the hydraulic line that oil hydraulic pump unit is connected with fuel tank, be provided with filter.
Effect of the present invention is: the generation of the accident such as leakage waste, environmental pollution, fire, blast that 1, can prevent transfer pump from bringing because of mechanical seal leakage when carrying flammable and combustible liquids; This is to be provided with mechanical seal leakage detection device in this device, and it can the working state of Real-Time Monitoring mechanical seal, once there is the situation of mechanical seal leakage, it can and alarm, teaching process personnel go process; 2, can improve the working environment of mechanical seal, prolonged mechanical seals working life, because auxiliary seal liquid is the liquid having good lubricating properties, the attrition surface of the dynamic and static ring of mechanical seal forms lubricating liquid film, reduces the wearing and tearing of dynamic and static ring; 3, the reliability of transfer pump work can being improved, guarantee safe production, economize on resources, reducing the pollution because leaking environment.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation (broken section) of existing transfer pump.
Accompanying drawing 2 is structural representation of the present invention (broken section).
Below in conjunction with embodiment and accompanying drawing, the present invention is set forth further:
Embodiment:
Embodiment: see accompanying drawing 2, a kind of transfer pump with mechanical seal leakage detection device, it is made up of transfer pump body and mechanical seal leakage detection device.By the pump housing 1, main shaft 2, mechanical seal, on the pressure side assembly 3, mechanical seal 4, mechanical seal atmospheric side assembly 5, bearing 6 form transfer pump body; Mechanical seal leakage detection device, is made up of two connecting heads 7, fuel tank 8, oil hydraulic pump unit 9, relief valve 10, liquid level sensor 11, pressure transducer 12, control panel (not shown) and hydraulic line 13, level meter 14, pressure gauge 15, temperature transducer 16, thermometer 17, duct thermostat 18, filter 19; Two connecting heads 7 respectively correspondence are located at transfer pump bulk mechanical Seal cage place, a connecting head 7 is connected with oil hydraulic pump unit 9 by hydraulic line 13, pressure transducer 12 is provided with in this section of hydraulic line 13, oil hydraulic pump unit 9 is connected with fuel tank 8 by hydraulic line 13, is provided with liquid level sensor 11 in fuel tank 8; Another connecting head 7 is connected with relief valve 10 by hydraulic line 13, and relief valve 10 is connected with fuel tank 8 by hydraulic line 13; Pressure transducer 12 and liquid level sensor equal 11 are electrically connected with control panel, and being provided with in control panel reports to the police is arranged, and control panel has the electric signal that treatment fluid level sensor 11, pressure transducer 12 and temperature transducer 16 transmit and the function processed it.For making grasp when patrolling and examining the liquid level of auxiliary seal liquid and the situation of pressure in fuel tank 8, in fuel tank 8, be provided with level meter 14; Pressure gauge 15 is provided with in the hydraulic line 13 being provided with pressure transducer 12.Run under optimum working temperature to make detection device, temperature transducer 16 and thermometer 17 is provided with in fuel tank 8, in the hydraulic line 13 that relief valve 10 is connected with fuel tank 8, be provided with duct thermostat 18, temperature transducer 16 and duct thermostat 18 are electrically connected with control panel.For preventing having impurity to damage mechanical seal in auxiliary seal liquid, in the hydraulic line 13 that oil hydraulic pump unit 9 is connected with fuel tank 8, be provided with filter 19.
Operation procedure and the setting of this device are: when conveying has a good lubricating properties liquid material, lubricant oil (auxiliary seal liquid) is injected in fuel tank 8, injecting oil mass is the high liquid level of level meter 14 and the neutral position of low liquid level, and the high liquid level warning of liquid level sensor 11 and low liquid level warning height set and be consistent with the high and low liquid level of level meter; When mechanical seal 4 leakage failure, have following 3 kinds may: (1), auxiliary seal liquid from mechanical seal on the pressure side assembly 3 bleed in transfer pump, in fuel tank 8 liquid level decline, when liquid level is down to low liquid level alarm, detect that mechanical seal 4 is leaked; (2), auxiliary seal liquid to bleed atmospheric side from mechanical seal atmospheric side assembly 5, and in fuel tank 8, liquid level declines, and when liquid level is down to low liquid level alarm, detects that mechanical seal 4 is leaked; (3), in pump delivering liquid material from mechanical seal on the pressure side assembly 3 bleed in mechanical seal active chamber, to enter in fuel tank 8, cause liquid level in fuel tank 8 to rise, when liquid level rises to high liquid level alarm, detect that mechanical seal 4 is leaked.(under nominal operating condition, the working pressure of auxiliary seal liquid is higher than pump chamber pressure, and auxiliary seal liquid may bleed in pump, but in pump, material can not bleed Seal cage).The effect of relief valve (also can be back pressure valve) 10 is working pressures of setting auxiliary seal liquid, the working pressure setting value of auxiliary seal liquid is: >=transfer pump working pressure 0.15 ~ 0.3MPa, makes the pressure of a little higher than transfer pump of Seal cage pressure on the pressure side (pump inner chamber); The pressure alarm setting value of pressure transducer is: >=transfer pump working pressure 0.10MPa; shutdown setting value is: >=transfer pump working pressure 0.05MPa; such as: the rated working pressure 1.0MPa of transfer pump; the delivery pressure of Lubricating-oil Station auxiliary seal liquid is set as 1.15 ~ 1.3MPa; when Lubricating-oil Station delivery pressure is lower than 1.1MPa, pressure signal is reported to the police, when Lubricating-oil Station delivery pressure is lower than 1.05MPa; pressure signal is reported to the police, transfer pump autostop.When carrying the inflammable and explosive liquid material of unlubricated property, the sealing auxiliary liquid of fuel tank 8 selects the lubricating liquid compatible mutually with pumping material, and pumping material can be diluted, although the bleed possibility in mechanical seal chamber of material is low in pump, if material in pump is once the mechanical seal active chamber that bleeds, also diluted by sealing auxiliary liquid, reduce the volatilization of inflammable gas, reach fire preventing accident and occur.
Claims (4)
1. the transfer pump with mechanical seal leakage detection device, comprise transfer pump body, it is characterized in that, also comprise mechanical seal leakage detection device, it is made up of two connecting heads, fuel tank, oil hydraulic pump unit, relief valve, liquid level sensor, pressure transducer, control panel and hydraulic line; Two connecting heads respectively correspondence are located at transfer pump bulk mechanical Seal cage place, a connecting head is connected with oil hydraulic pump unit by hydraulic line, in this section of hydraulic line, be provided with pressure transducer, oil hydraulic pump unit is connected with fuel tank by hydraulic line, is provided with liquid level sensor in fuel tank; Another connecting head is connected with relief valve by hydraulic line, and relief valve is connected with fuel tank by hydraulic line; Pressure transducer and liquid level sensor are all electrically connected with control panel, and being provided with in control panel reports to the police is arranged.
2., by the transfer pump of band mechanical seal leakage detection device according to claim 1, it is characterized in that, in fuel tank, be provided with level meter; Pressure gauge is provided with in the hydraulic line being provided with pressure transducer.
3. by the transfer pump of band mechanical seal leakage detection device according to claim 1, it is characterized in that, temperature transducer, thermometer, duct thermostat is provided with in fuel tank, in the hydraulic line that relief valve is connected with fuel tank, be provided with duct thermostat, temperature transducer and duct thermostat are electrically connected with control panel.
4. press the transfer pump of claim 1 or the band mechanical seal leakage detection device described in 2 or 3, it is characterized in that, in the hydraulic line that oil hydraulic pump unit is connected with fuel tank, be provided with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597242.3A CN104454482A (en) | 2014-10-23 | 2014-10-23 | Conveying pump provided with mechanical seal leakage detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597242.3A CN104454482A (en) | 2014-10-23 | 2014-10-23 | Conveying pump provided with mechanical seal leakage detection device |
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| Publication Number | Publication Date |
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| CN104454482A true CN104454482A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410597242.3A Pending CN104454482A (en) | 2014-10-23 | 2014-10-23 | Conveying pump provided with mechanical seal leakage detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485038A (en) * | 2015-11-30 | 2016-04-13 | 武汉船用机械有限责任公司 | Double-end surface mechanical seal monitoring device of fluid centrifugal pump |
| CN109519394A (en) * | 2017-09-20 | 2019-03-26 | 格兰富控股联合股份公司 | Pump seal leak detection system |
| CN114776602A (en) * | 2022-03-09 | 2022-07-22 | 浙江微科机电有限公司 | Petrochemical engineering pump group operation monitoring and fault diagnosis system based on ad hoc network and management method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088379A1 (en) * | 2000-05-19 | 2001-11-22 | Netzsch-Mohnopumpen Gmbh | Method and device for operating a screw pump |
| CN201121584Y (en) * | 2007-09-29 | 2008-09-24 | 天津泵业机械集团有限公司 | Intelligent oil-gas mixed flow double-screw pump mechanical seal protection system |
| CN201306281Y (en) * | 2008-12-05 | 2009-09-09 | 天津泵业机械集团有限公司 | Mechanical sealing protection system of marine double-screw cargo oil pump for conveying bitumen |
| CN202560624U (en) * | 2012-03-01 | 2012-11-28 | 金庆明 | Circulation protection and control system of mechanical seals |
| CN204239216U (en) * | 2014-10-23 | 2015-04-01 | 江西新德工业泵有限责任公司 | With the transfer pump of mechanical seal leakage detection device |
-
2014
- 2014-10-23 CN CN201410597242.3A patent/CN104454482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001088379A1 (en) * | 2000-05-19 | 2001-11-22 | Netzsch-Mohnopumpen Gmbh | Method and device for operating a screw pump |
| CN201121584Y (en) * | 2007-09-29 | 2008-09-24 | 天津泵业机械集团有限公司 | Intelligent oil-gas mixed flow double-screw pump mechanical seal protection system |
| CN201306281Y (en) * | 2008-12-05 | 2009-09-09 | 天津泵业机械集团有限公司 | Mechanical sealing protection system of marine double-screw cargo oil pump for conveying bitumen |
| CN202560624U (en) * | 2012-03-01 | 2012-11-28 | 金庆明 | Circulation protection and control system of mechanical seals |
| CN204239216U (en) * | 2014-10-23 | 2015-04-01 | 江西新德工业泵有限责任公司 | With the transfer pump of mechanical seal leakage detection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485038A (en) * | 2015-11-30 | 2016-04-13 | 武汉船用机械有限责任公司 | Double-end surface mechanical seal monitoring device of fluid centrifugal pump |
| CN105485038B (en) * | 2015-11-30 | 2017-07-11 | 武汉船用机械有限责任公司 | A kind of double mechanical seal monitoring device of centrifugal fluid pump |
| CN109519394A (en) * | 2017-09-20 | 2019-03-26 | 格兰富控股联合股份公司 | Pump seal leak detection system |
| CN114776602A (en) * | 2022-03-09 | 2022-07-22 | 浙江微科机电有限公司 | Petrochemical engineering pump group operation monitoring and fault diagnosis system based on ad hoc network and management method |
| CN114776602B (en) * | 2022-03-09 | 2024-04-09 | 浙江微科机电有限公司 | Petrochemical machine pump group operation monitoring and fault diagnosis system and management method based on ad hoc network |
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Application publication date: 20150325 |