CN105864018A - Ultralow-temperature test device suitable for LNG immersed pump - Google Patents
Ultralow-temperature test device suitable for LNG immersed pump Download PDFInfo
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- CN105864018A CN105864018A CN201610206985.2A CN201610206985A CN105864018A CN 105864018 A CN105864018 A CN 105864018A CN 201610206985 A CN201610206985 A CN 201610206985A CN 105864018 A CN105864018 A CN 105864018A
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- storage tank
- test
- pump
- outlet
- assay device
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses an ultralow-temperature test device suitable for an LNG immersed pump. The ultralow-temperature test device comprises a test storage tank, a circulation storage tank, a suction pipe and a discharge pipe. An inlet of the discharge pipe is inserted in an outlet of the test storage tank in a sealed mode. An inlet of the test storage tank is connected with an outlet of the suction pipe. An inlet of the suction pipe is connected with an outlet of the circulation storage tank. An inlet of the circulation storage tank is connected with an outlet of the discharge pipe. The test storage tank is internally provided with a vibration sensor and an axial displacement sensor. A pump suction port thermometer, a pump suction port pressure meter and an electrical connection sealing piece are arranged on the test storage tank. The discharge pipe is provided with a pump outlet thermometer, a pump outlet pressure meter and a pump outlet flowmeter. A cooling mechanism for cooling test media is arranged in the circulation storage tank. According to the ultralow-temperature test device suitable for the LNG immersed pump, the working condition of the LNG immersed pump during practical application is simulated to conduct performance testing, the performance presentation of the LNG immersed pump in the practical operation process can be evaluated maximally, and the working performance, the safety performance and the stability of the LNG immersed pump are verified.
Description
Technical field
The present invention relates to immersed pump low-temperature test field, be specifically related to a kind of be applicable to the ultralow of LNG immersed pump
Temperature assay device.
Background technology
LNG immersed pump is the pumping unit for carrying ultralow temperature liquified natural gas, during work, and its whole pump housing
Be immersed in liquid LNG, drive receded disk impeller high speed rotating by built-in motor, by LNG from
Storage transfers out in cabin, and the pump of this form is widely used in land LNG storage tank and marine LNG
On the facilities such as ship.
Due to ultralow temperature and the volatile inflammable and explosive characteristic of LNG medium, need during the work of LNG immersed pump
Entirety is immersed in the LNG storage cabin of closing, and cable accesses LNG from the external world by special sealing structure and dives
Motor within liquid pump, the operating for LNG immersed pump provides power.Operation process at LNG immersed pump
In, it is desirable to it is resistant to the ultra-low temperature surroundings of about-162 DEG C of LNG medium, and sealing is required for pole everywhere
It is reliable, prevents LNG from overflowing the danger causing blast.This special use environment and operating mode are to LNG
The design of immersed pump and manufacture propose high requirement, in order to ensure the Specifeca tion speeification of pump and stablize
Property and safety meet requirement, every pump is required for after fabrication in the assay device of specialty, simulation reality
Application operating mode makes a service test, and verifies its service behaviour, security performance and stability etc..
But the critical component of LNG immersed pump can only be detected by existing assay device mostly, it is impossible to right
LNG immersed pump carries out the test of complete machine simulation actual condition.
Summary of the invention
Can not simulate actual condition completely carry out the problem of system test to solve prior art, the present invention is real
Execute example and provide a kind of ultra-low temperature testing device being applicable to LNG immersed pump.Its technical scheme is as follows:
Embodiments provide a kind of ultra-low temperature testing device being applicable to LNG immersed pump, described test
Device includes: test storage tank, circulating storage tank, suction tube, discharge pipe, described discharge pipe inlet seal plug-in mounting
In described test outlet, described test storage tank import is connected with the outlet of described suction tube, described suction
Tube inlet is connected with the outlet of described circulating storage tank, and described circulating storage tank import is connected with the outlet of described discharge pipe,
Vibrating sensor and shaft position sensor, the institute of detection test pump it is respectively provided with in described test storage tank
State the position of corresponding described test pump suction inlet on test storage tank and be respectively arranged with mouth piece thermometer and mouth piece pressure
Power meter, described test storage tank is provided with the electrical connection sealing member that the cable for described test pump passes,
On described discharge pipe, the position of corresponding described test pump outlet is respectively arranged with pump discharge thermometer, pump discharge pressure
Power meter and pump outlet flow gauge, be provided with the cooling body for cooling test medium in described circulating storage tank.
In a kind of implementation of the embodiment of the present invention, on described test storage tank and described circulating storage tank respectively
Liquidometer is installed, is communicated with for ensureing described liquidometer between described test storage tank and described circulating storage tank
Measurement fluid balance pipe accurately.
In the another kind of implementation of the embodiment of the present invention, described circulating storage tank top is provided with can be by superpressure
The pressure relief valve that gas is released away.
In the another kind of implementation of the embodiment of the present invention, described discharge pipe is provided with flow control valve.
In the another kind of implementation of the embodiment of the present invention, described assay device also includes data acquisition unit,
Described vibrating sensor, described shaft position sensor, described pump discharge thermometer, described pump discharge pressure
Meter, described pump outlet flow gauge, described mouth piece thermometer and the manometric signal output part of described mouth piece
It is connected with described collecting unit respectively.
In the another kind of implementation of the embodiment of the present invention, described assay device also includes control unit, institute
State control unit to be connected with the control circuit of described test pump.
In the another kind of implementation of the embodiment of the present invention, described cooling body is liquid nitrogen circulation pipe.
In the another kind of implementation of the embodiment of the present invention, described test(ing) medium is LNG or liquid nitrogen.
In the another kind of implementation of the embodiment of the present invention, described test storage tank, described circulating storage tank, institute
State suction tube and described discharge pipe surface is all coated with heat insulation foam.
In the another kind of implementation of the embodiment of the present invention, described test storage tank and described circulating storage tank are all
Use the hermetic container that low temperature resistant austenitic stainless steel makes.
The technical scheme that the embodiment of the present invention provides has the benefit that owing to test pump is Integral sealing
Being arranged in assay device, be immersed in test(ing) medium and test, therefore this device is to simulate LNG to dive
The overall performance test that operating mode during the actual application of liquid pump is carried out, can evaluate and test out test pump actual to greatest extent
Performance in running, verifies its service behaviour, security performance and stability；Follow by being arranged on
Cooling body in ring storage tank, absorbs the extraneous incoming and heat of closed test pump acting generation, can be maximum
The stability that ensure that assay device of limit and safety；Whole pilot system is a circulating system, examination
Test medium to recycle in assay device, save cost；By being arranged on each position of assay device
The data of sensor measurement, it is simple to test pump performance is judged by operator with state.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the assay device structure composition schematic diagram that the embodiment of the present invention provides.
Wherein, in accompanying drawing, the implication of label is as follows: 1-test pump, and 2-tests storage tank, 3-circulating storage tank, 4-
Suction tube, 5-inlet valve, 6-discharge pipe, 7-flow control valve, 8-liquid nitrogen circulation pipe, 9-liquid level equilibrium pipe,
10-data acquisition unit, 11-storage tank implementation of port, 12-control unit, 13-circulating storage tank liquidometer, 14-tries
Test storage tank liquid-level meter, 15-mouth piece piezometer, 16-mouth piece thermometer, 17-pump discharge pressure meter, 18-
Pump discharge thermometer, 19-pump outlet flow gauge, 20-data transmission link, 21-pressure relief valve, 22-shakes
Dynamic sensor, 23-shaft position sensor, 24-testing stand ground, 25-circulating storage tank support, 26-tests
Tank support.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
Embodiments provide a kind of being suitable for and liquefied natural gas (liquefied natural gas, abbreviation
LNG) ultra-low temperature testing device of immersed pump, Fig. 1 is the structure of the assay device that the embodiment of the present invention provides
Composition schematic diagram, sees Fig. 1, and this assay device specifically includes that test storage tank 2, circulating storage tank 3, sucks
Pipe 4, discharge pipe 6, test storage tank 2 is arranged on test tank support 26, and circulating storage tank 3 is by circulation
Tank support 25 is arranged on testing stand ground 24, and discharge pipe 6 inlet seal is inserted into test storage tank 2 and goes out
In mouthful, test storage tank 2 import is connected with suction tube 4 outlet, and the entrance of suction tube 4 goes out with circulating storage tank 3
Mouth is connected, and circulating storage tank 3 import is connected with discharge pipe 6 outlet, is respectively provided with inspection in test storage tank 2
Survey vibrating sensor 22 and the shaft position sensor 23 of test pump 1, corresponding test pump 1 on test storage tank 2
The position of suction inlet is respectively arranged with mouth piece thermometer 16 and mouth piece piezometer 15, and test storage tank 2 is arranged
Having the electrical connection sealing member that the cable for test pump 1 passes, on discharge pipe 6, corresponding test pump 1 exports
Position be respectively arranged with pump discharge thermometer 18, pump discharge pressure meter 17 and pump outlet flow gauge 19, follow
The cooling body for cooling test medium it is provided with in ring storage tank 3.Vibrating sensor 22 is used for experiment with measuring
The vibration of pump 1, shaft position sensor 23 is used for the axial displacement of experiment with measuring pump 1 internal rotor, mouth piece
Thermometer 16 is used for monitoring test pump 1 suction inlet temperature, and mouth piece piezometer 15 is used for monitoring test pump 1 and inhales
Mouth pressure, pump discharge thermometer 18 is used for monitoring test pump 1 outlet temperature, and pump discharge pressure meter 17 is used for
Monitoring test pump 1 outlet pressure, pump outlet flow gauge 19 is used for experiment with measuring pump 1 rate of discharge, by surveying
The vibration of test pump 1, the axial displacement of rotor, test pump 1 suction inlet temperature, test pump 1 suction inlet pressure
Power, test pump 1 outlet temperature, test pump 1 outlet pressure and test pump 1 rate of discharge judge test pump 1
Performance and state.
When test pump 1 to be tested, test pump 1 integral sealing is arranged in test storage tank 2, test
Pump 1 outlet is connected with discharge pipe 6 inlet seal, test(ing) medium is full of whole assay device, makes test be situated between
Matter is under the effect of test pump 1, by test storage tank 2, circulating storage tank 3, suction tube 4 and discharge pipe 6 groups
The blood circulation become circulates.
In embodiments of the present invention, test storage tank 2 and circulating storage tank 3 are separately installed with circulating storage tank liquid level
Meter 13 and test storage tank liquid-level meter 14, be also communicated with between test storage tank 2 and circulating storage tank 3 and follow for ensureing
Ring storage tank liquid-level meter 13 and the measurement fluid balance pipe 9 accurately of test storage tank liquid-level meter 14, pass through liquidometer
Need to can mend in time when in tank, liquid level is too low with the liquid level in Real Time Observation test storage tank 2 and circulating storage tank 3
Fill test(ing) medium, prevent test pump 1 idle running from causing fault.
In embodiments of the present invention, circulating storage tank 3 top is provided with the pressure that can be released away by over-pressure gas
Relief valve 21.When in circulating storage tank 3, pressure exceedes setting value, pressure relief valve 21 automatically opens up, by portion
The gas of point superpressure is released away, when in circulating storage tank 3, pressure is reduced to setting value or during less than setting value,
Pressure relief valve 21 is automatically switched off, and in keeping circulating storage tank 3, pressure is in the range of reasonably.
In embodiments of the present invention, discharge pipe 6 is provided with flow control valve 7, flow control valve can be regulated
7 flows carrying out the Control experiment pump 1 test(ing) medium in process of the test, with test under the conditions of different flow,
The performance of above-mentioned test pump 1 and stability.
In embodiments of the present invention, above-mentioned assay device also includes data acquisition unit 10, vibrating sensor 22,
Shaft position sensor 23, pump discharge thermometer 18, pump discharge pressure meter 17, pump outlet flow gauge 19,
Mouth piece thermometer 16, the signal of mouth piece piezometer 15 access data acquisition by data transmission link 20
Unit 10, incoming control station after data process, it is simple to operator carries out data record and trystate inspection
Survey.Owing to test pump 1 is operationally that entirety is immersed in test(ing) medium, its running status cannot directly be seen
Examine, so by above-mentioned assay device, operator can be allowed to monitor the running status of above-mentioned test pump 1 in real time
With performance.
In embodiments of the present invention, above-mentioned assay device also includes control unit 12, control unit 12 and test
The cable of pump 1 is connected, for test pump 1 power supply the duty of Control experiment pump 1.
In embodiments of the present invention, above-mentioned cooling body is liquid nitrogen circulation pipe 8, in process of the test, follows at liquid nitrogen
Constantly being passed through liquid nitrogen in endless tube 8, by the liquid nitrogen in liquid nitrogen circulation pipe 8, absorption test pump 1 produces
Heat and extraneous conduction are to intrasystem heat, it is ensured that the stability of assay device and safety.
In embodiments of the present invention, above-mentioned test(ing) medium is LNG or liquid nitrogen, and simulation actual condition enters truly
Row test.
In embodiments of the present invention, test storage tank 2, circulating storage tank 3, suction tube 4, discharge pipe 6 surface are equal
It is coated with heat insulation foam, prevents external heat from too much conducting and cause test(ing) medium to gasify to inside, increase system peace
Quan Xing.
In embodiments of the present invention, test storage tank 2 and circulating storage tank 3 are all to use low temperature resistant austenite not
The hermetic container that rust steel is made, reliability is high, adaptability is good, manufacturing cost ratio is relatively low, is particularly well-suited to LNG
Test etc. easy gasified liquid.
Owing to test pump is that Integral sealing is arranged in assay device, it is immersed in test(ing) medium and tests,
Therefore the overall performance test that operating mode when this device is to simulate the actual application of LNG immersed pump is carried out, maximum
The evaluation and test of limit goes out the performance in test pump actual moving process, verifies its service behaviour, security performance
And stability；By the cooling body being arranged in circulating storage tank, absorb extraneous incoming and closed test pump
The heat that acting produces, ensure that stability and the safety of assay device to greatest extent；Whole test system
System is a circulating system, and test(ing) medium recycles in assay device, saved cost；By arranging
Data at the sensor measurement of each position of assay device, it is simple to operator are to test pump performance and shape
State judges.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (10)
1. the ultra-low temperature testing device being applicable to LNG immersed pump, it is characterised in that described test fills
Put and include: test storage tank, circulating storage tank, suction tube, discharge pipe, described discharge pipe inlet seal is inserted into
In described test outlet, described test storage tank import is connected with the outlet of described suction tube, described suction tube
Entrance is connected with the outlet of described circulating storage tank, and described circulating storage tank import is connected with the outlet of described discharge pipe, institute
Vibrating sensor and the shaft position sensor of detection test pump it is respectively provided with in stating test storage tank, described
On test storage tank, the position of corresponding described test pump suction inlet is respectively arranged with mouth piece thermometer and mouth piece pressure
Meter, described test storage tank is provided with the electrical connection sealing member that the cable for described test pump passes, institute
State the position of corresponding described test pump outlet on discharge pipe and be respectively arranged with pump discharge thermometer, pump discharge pressure
Meter and pump outlet flow gauge, be provided with the cooling body for cooling test medium in described circulating storage tank.
Assay device the most according to claim 1, it is characterised in that described test storage tank and described follow
It is separately installed with liquidometer on ring storage tank, is communicated with for protecting between described test storage tank and described circulating storage tank
Demonstrate,prove the measurement fluid balance pipe accurately of described liquidometer.
Assay device the most according to claim 1, it is characterised in that described circulating storage tank top is arranged
There is the pressure relief valve that over-pressure gas can be released away.
Assay device the most according to claim 1, it is characterised in that be provided with stream on described discharge pipe
Adjustable valve.
Assay device the most according to claim 2, it is characterised in that described assay device also includes number
According to collecting unit, described vibrating sensor, described shaft position sensor, described pump discharge thermometer, institute
State pump discharge pressure meter, described pump outlet flow gauge, described mouth piece thermometer and described mouth piece piezometer
Signal output part be connected with described collecting unit respectively.
Assay device the most according to claim 1, it is characterised in that described assay device also includes control
Unit processed, described control unit is connected with the control circuit of described test pump.
Assay device the most according to claim 1, it is characterised in that described cooling body is that liquid nitrogen follows
Endless tube.
Assay device the most according to claim 1, it is characterised in that described test(ing) medium is LNG
Or liquid nitrogen.
Assay device the most according to claim 1, it is characterised in that described test storage tank, described in follow
Ring storage tank, described suction tube and described discharge pipe surface are all coated with heat insulation foam.
Assay device the most according to claim 1, it is characterised in that described test storage tank and described
Circulating storage tank is all the hermetic container using low temperature resistant austenitic stainless steel to make.
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| CN201610206985.2A CN105864018B (en) | 2016-04-05 | 2016-04-05 | A kind of ultra-low temperature testing device suitable for immersed pump |
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| CN201610206985.2A CN105864018B (en) | 2016-04-05 | 2016-04-05 | A kind of ultra-low temperature testing device suitable for immersed pump |
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| CN105864018A true CN105864018A (en) | 2016-08-17 |
| CN105864018B CN105864018B (en) | 2018-09-07 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441473A (en) * | 2016-08-31 | 2017-02-22 | 烟台中隆仪表有限公司 | Precooling-free mass flowmeter |
| CN107044911A (en) * | 2017-05-16 | 2017-08-15 | 大连深蓝泵业有限公司 | Low-temperature test system and liquefied natural gas decompression operating mode LNG hydraulic turbine low-temperature test methods |
| CN107587999A (en) * | 2017-09-08 | 2018-01-16 | 武汉船用机械有限责任公司 | A kind of ultra-low temperature testing device and method |
| CN109219720A (en) * | 2017-05-05 | 2019-01-15 | 气体运输技术公司 | storage device for liquefied gas |
| CN109506970A (en) * | 2018-12-29 | 2019-03-22 | 天津市合润科技有限责任公司 | Side-feeding stirrer performance detection experiment data acquisition system |
| CN110261099A (en) * | 2019-06-20 | 2019-09-20 | 江苏亿阀股份有限公司 | A kind of Subzero valve intercooling cycle experimental system |
| CN112228773A (en) * | 2019-07-15 | 2021-01-15 | 北京长征天民高科技有限公司 | Cryogenic test system |
| CN116163965A (en) * | 2022-12-05 | 2023-05-26 | 上海阿波罗机械股份有限公司 | A vertical pump pool structure for a cryopump test system |
| CN116292243A (en) * | 2023-02-16 | 2023-06-23 | 上海阿波罗机械股份有限公司 | Closed continuous self-feedback cryogenic pump test system depending on liquefied natural gas factory |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106441473A (en) * | 2016-08-31 | 2017-02-22 | 烟台中隆仪表有限公司 | Precooling-free mass flowmeter |
| KR102579882B1 (en) * | 2017-05-05 | 2023-09-19 | 가즈트랑스포르 에 떼끄니가즈 | Storage facilities for liquefied gas |
| CN109219720A (en) * | 2017-05-05 | 2019-01-15 | 气体运输技术公司 | storage device for liquefied gas |
| KR20200004236A (en) * | 2017-05-05 | 2020-01-13 | 가즈트랑스포르 에 떼끄니가즈 | Storage equipment for liquefied gas |
| CN107044911A (en) * | 2017-05-16 | 2017-08-15 | 大连深蓝泵业有限公司 | Low-temperature test system and liquefied natural gas decompression operating mode LNG hydraulic turbine low-temperature test methods |
| CN107587999A (en) * | 2017-09-08 | 2018-01-16 | 武汉船用机械有限责任公司 | A kind of ultra-low temperature testing device and method |
| CN107587999B (en) * | 2017-09-08 | 2019-06-21 | 武汉船用机械有限责任公司 | A kind of ultra-low temperature testing device and method |
| CN109506970A (en) * | 2018-12-29 | 2019-03-22 | 天津市合润科技有限责任公司 | Side-feeding stirrer performance detection experiment data acquisition system |
| CN109506970B (en) * | 2018-12-29 | 2024-05-24 | 天津市合润科技有限责任公司 | Side-entering stirrer performance detection experimental data acquisition system |
| CN110261099A (en) * | 2019-06-20 | 2019-09-20 | 江苏亿阀股份有限公司 | A kind of Subzero valve intercooling cycle experimental system |
| CN110261099B (en) * | 2019-06-20 | 2023-11-14 | 江苏亿阀股份有限公司 | Low-temperature valve internal cooling circulation experiment system |
| CN112228773A (en) * | 2019-07-15 | 2021-01-15 | 北京长征天民高科技有限公司 | Cryogenic test system |
| CN116163965A (en) * | 2022-12-05 | 2023-05-26 | 上海阿波罗机械股份有限公司 | A vertical pump pool structure for a cryopump test system |
| CN116292243A (en) * | 2023-02-16 | 2023-06-23 | 上海阿波罗机械股份有限公司 | Closed continuous self-feedback cryogenic pump test system depending on liquefied natural gas factory |
| CN116292243B (en) * | 2023-02-16 | 2024-02-23 | 上海阿波罗机械股份有限公司 | Closed continuous self-feedback cryogenic pump test system depending on liquefied natural gas factory |
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| CN105864018B (en) | 2018-09-07 |
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