CN106768091A - One kind is used for generating set efficiency test water-carrying capacity and temperature measuring equipment - Google Patents
One kind is used for generating set efficiency test water-carrying capacity and temperature measuring equipment Download PDFInfo
- Publication number
- CN106768091A CN106768091A CN201710165589.4A CN201710165589A CN106768091A CN 106768091 A CN106768091 A CN 106768091A CN 201710165589 A CN201710165589 A CN 201710165589A CN 106768091 A CN106768091 A CN 106768091A
- Authority
- CN
- China
- Prior art keywords
- generator
- connecting portion
- pipe
- carrying capacity
- temperature measuring
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
It is used for efficiency test of generator water-carrying capacity and temperature measuring equipment, including the pipeline for connecting generator water inlet pipe and generator outlet pipe the invention discloses one kind；Pipeline includes the first connecting portion being connected with generator water inlet pipe and the first connecting portion instrument test section for connecting and the second connecting portion being connected with generator outlet pipe；Thermometric RTD is provided between first connecting portion and instrument test section；Instrument test section includes front end straight length, flowmeter, rear end straight length, choke valve and osculum successively；The present invention adapts to different water-carrying capacity system testings, and flow velocity is uniform, temperature stabilization, test are accurate, and temperature difference adjustable extent is big, and measurement error is small；The efficiency test of steam turbine generator, nuclear energy generator and hydrogenerator is applicable to, with good popularization and application value.
Description
Technical field
The present invention relates to efficiency test of generator measurement apparatus, and in particular to one kind is used for generating set efficiency test current
Amount and temperature measuring equipment.
Background technology
At the scene, it is necessary to check the situation of generator energy conversion in power generation process in efficiency test of generator；Efficiency
Influence generator power consumption number, when motor belt motor is carried, the institute of motor it is lossy it is final all becomes hot, and these heat are transmitted to cooling
Medium；As long as therefore measuring temperature rise and the flow of cooling medium, you can every loss of motor is tried to achieve, so as to obtain the effect of motor
Rate；Corresponding experimental rig is now accomplished by measure flow and the temperature rise of cooling medium；There is presently no for this experiment
Corresponding measurement apparatus.
The content of the invention
Cooling medium consumption and temperature measuring equipment when the present invention provides one kind for efficiency test of generator.
The technical solution adopted by the present invention is：One kind is used for efficiency test of generator water-carrying capacity and temperature measuring equipment, bag
Include the pipeline of connection generator water inlet pipe and generator outlet pipe；Pipeline includes the first connection being connected with generator water inlet pipe
Portion and the first connecting portion instrument test section for connecting and the second connecting portion being connected with generator outlet pipe；First connecting portion and
Thermometric RTD is provided between instrument test section；Instrument test section includes front end straight length, flowmeter, rear end straight tube successively
Section, choke valve and steam vent.
Further, the pipeline is U-shaped or Ω types.
Further, the first connecting portion is additionally provided with transition flexible pipe.
Further, connected by first throttle conical pipe between the first connecting portion and instrument test section, instrument examination
Test between section and second connecting portion and connected by second section stream conical pipe.
Further, at least one adjustable for height pipe installation bracket is additionally provided with for supporting pipeline.
Further, it is additionally provided with extension tube between the transition flexible pipe and instrument test section.
Further, the first connecting portion connects generator water inlet pipe, wherein bend pipe two ends by first flange bend pipe
Flange size it is different.
Further, the second connecting portion connects generator outlet pipe, wherein bend pipe two ends by second flange bend pipe
Flange size it is different.
Further, the thermometric RTD, flowmeter and choke valve are arranged on pipeline by flanged (FLGD) bend pipe.
The beneficial effects of the invention are as follows：
(1) cooling water is converted by flange bending in the present invention, then flows it by throttling conical pipe, the effect of choke valve
It is fast uniform, full of measurement pipeline；By improving its flow velocity after throttling of successively decreasing, the certainty of measurement of flow is improved；
(2) present invention can be by choke valve and the size of throttling conical pipe regulating water flow, through the caliber at instrument measurement end
After successive reduces, Reynolds number within the specific limits, uniform fluid flow and is maintained at laminar condition, when regulation choke valve makes current quantitative change
Small, its leaving water temperature becomes big, improves the certainty of measurement of the temperature difference；
(3) present invention can be used for steam turbine generator, nuclear energy generator and hydrogenerator etc. using water as secondary cooling be situated between
The electric efficiency experiment of matter, with popularization and application value well.
Brief description of the drawings
Fig. 1 is front view of the present invention.
Fig. 2 is vertical scheme of installation of the invention.
Fig. 3 is horizontal scheme of installation.
Fig. 4 is pipe installation bracket structural representation in the present invention.
In figure：1- generator water inlet pipes, 2- first flange bend pipes, 3- transition flexible pipes, 4- extension tubes, 5- thermometric RTDs,
6- front ends straight length, 7- flowmeters, 8- rear ends straight length, 9- choke valves, 10- pipe installation brackets, 11- steam vents, 12- second
Flange bending, 13- generator outlet pipes.
Specific embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As Figure 1-3, it is a kind of to be used for generating set efficiency test water-carrying capacity and temperature measuring equipment, including connection generates electricity
The pipeline of machine water inlet pipe 1 and generator outlet pipe 13；Pipeline includes the first connecting portion that is connected with generator water inlet pipe 1 and the
The instrument test section of one connecting portion connection and the second connecting portion being connected with generator outlet pipe 13；First connecting portion and instrument are tried
Test between section and be provided with thermometric RTD 5；Instrument test section includes front end straight length 6, flowmeter 7, rear end straight length 8, section successively
Stream valve 9 and steam vent 11.
When using, cooling water is by generator water inlet pipe 1 through first connecting portion, thermometric RTD 5, instrument test section and second
Connecting portion enters generator outlet pipe 13, and first passes through unnecessary air in the discharge line of steam vent 11；Instrument tests segment pipe
The converted front end straight length 6 that flows through of interior water is converted, then after being acted on via choke valve 9, its flow velocity is uniform, parallel to axial flow
Streamline；Measure the leaving water temperature T of cooling water1, the temperature that cooling water enters before generator is T0, its temperature difference is T1-T0。
When efficiency test of generator is carried out, the loss that motor is produced is taken away by cooling water, according to GB GB/T
5321-2005, loss P can be calculated as follows：
P=Cp·ρ·Q·(T1-T0)
In formula, CpIt is the specific heat of water, kJ/kg/K；
ρ is the density of water, kg/m3；
Q is water-carrying capacity, m3/h；
T1It is leaving water temperature, DEG C；
T0It is inflow temperature, DEG C.
Further, the pipeline is U-shaped or Ω types；Pipeline can also be the other shapes for adapting to concrete condition, pipeline
Size and model are not quite similar, and can accordingly be reduced by caliber after bend pipe flange and instrument measurement end.
Further, the first connecting portion is additionally provided with transition flexible pipe 3；Transition flexible pipe 3 is set and is suitable for different connections
Distance and height.
Further, connected by first throttle conical pipe between the first connecting portion and instrument test section, instrument examination
Test between section and second connecting portion and connected by second section stream conical pipe；Cooling water via after the effect of first throttle conical pipe extremely
Instrument test section, generator outlet pipe 13 is entered after then amplifying through second section stream conical pipe through second connecting portion；Can cause
Its flow velocity is more uniform, reduces measurement error.
Further, being additionally provided with least one adjustable for height pipe installation bracket 10 is used to support pipeline；By setting
Putting pipe installation bracket 10 can more easily adjust the placing height of test pipe, adapt to different pipelines.
Further, it is additionally provided with extension tube 4 between the transition flexible pipe 3 and instrument test section.
Further, the first connecting portion connects generator water inlet pipe 1 by first flange bend pipe 2.
Further, the second connecting portion connects generator outlet pipe 13 by second flange bend pipe 12.
Further, the thermometric RTD 5, flowmeter 7 and choke valve 9 are arranged on pipeline by flanged (FLGD) bend pipe
On.
After water is via flange bending, throttling conical pipe, the effect of choke valve 9, its flow velocity is uniform, parallel to axial flow
Streamline；The present invention can effectively adjust cooling water flow, and Lifting Water still meets Reynolds number limit value, reaches full packages and in layer
Stream mode；And by throttling of successively decreasing twice, flow reduces, the temperature difference between increase cooling Inlet and outlet water reduces measurement error, improves
Flow and temperature measurement accuracy, so that the measuring accuracy of raising efficiency；Cooling medium of the present invention for efficiency test of generator
The device of parameter measurement, the device one end be 90 ° of flanges, the other end is the flange with flexible pipe, be suitable for it is different connection distance and
Angle；The flow and temperature of cooling medium can be accurately measured, the accurate loss for calculating motor can be used to measure air, thrust
The loss that the coolers such as bearing, guide bearing are taken away, can be also used for steam turbine generator, nuclear energy generator and hydrogenerator etc. with
Water is tested as the electric efficiency of secondary cooling medium, with good popularization and application value.
Claims (9)
- It is 1. a kind of to be used for efficiency test of generator water-carrying capacity and temperature measuring equipment, it is characterised in that：Enter including connection generator The pipeline of water pipe (1) and generator outlet pipe (13)；Pipeline include the first connecting portion that is connected with generator water inlet pipe (1) and The instrument test section of first connecting portion connection and the second connecting portion being connected with generator outlet pipe (13)；First connecting portion and instrument Thermometric RTD (5) is provided between watch test section；Instrument test section successively include front end straight length (6), flowmeter (7), after End straight length (8), choke valve (9) and steam vent (11).
- 2. according to claim 1 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：The pipeline is U-shaped or Ω types.
- 3. according to claim 1 a kind of for generating set efficiency test water-carrying capacity and temperature measuring equipment, its feature exists In：The first connecting portion is additionally provided with transition flexible pipe (3).
- 4. according to claim 1 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：Connected by first throttle conical pipe between the first connecting portion and instrument test section, instrument test section and second is connected Connected by second section stream conical pipe between portion.
- 5. according to claim 1 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：At least one adjustable for height pipe installation bracket (10) is additionally provided with for supporting pipeline.
- 6. according to claim 3 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：Extension tube (4) is additionally provided between the transition flexible pipe (3) and instrument test section.
- 7. according to claim 1 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：The first connecting portion connects generator water inlet pipe (1) by first flange bend pipe (2).
- 8. according to claim 1 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：The second connecting portion connects generator outlet pipe (13) by second flange bend pipe (12).
- 9. according to claim 1 a kind of for efficiency test of generator water-carrying capacity and temperature measuring equipment, its feature exists In：The thermometric RTD (5), flowmeter (7) and choke valve (9) are arranged on pipeline by flanged (FLGD) bend pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165589.4A CN106768091B (en) | 2017-03-20 | 2017-03-20 | Be used for generating set efficiency test discharge and temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710165589.4A CN106768091B (en) | 2017-03-20 | 2017-03-20 | Be used for generating set efficiency test discharge and temperature measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106768091A true CN106768091A (en) | 2017-05-31 |
| CN106768091B CN106768091B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710165589.4A Active CN106768091B (en) | 2017-03-20 | 2017-03-20 | Be used for generating set efficiency test discharge and temperature measuring device |
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Citations (17)
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| Publication number | Publication date |
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| CN106768091B (en) | 2023-09-22 |
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