CN107870012A - The device and method of rate-of flow under a kind of heat balance method of test complex environment - Google Patents
The device and method of rate-of flow under a kind of heat balance method of test complex environment Download PDFInfo
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- CN107870012A CN107870012A CN201711093582.2A CN201711093582A CN107870012A CN 107870012 A CN107870012 A CN 107870012A CN 201711093582 A CN201711093582 A CN 201711093582A CN 107870012 A CN107870012 A CN 107870012A
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- heat exchanger
- temperature
- tested media
- flow
- tested
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- 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
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses the device and method that a kind of heat balance method of tests rate-of flow under complex environment, including tested media flow ipe, tested media outflow pipeline, heat exchanger, data processor, the first temperature sensor for detecting tested media temperature at heat exchanger entrance, for detecting the second temperature sensor of tested media temperature at heat exchanger exit, for detecting some three-temperature sensors of tested media temperature in heat exchanger and the 4th temperature sensor for detecting measured medium temperature, the device and method it can test the flow of medium under complex environment.
Description
Technical field
The present invention relates to a kind of device and method of tested media flow, and in particular to a kind of heat balance method of tests complicated ring
The device and method of rate-of flow under border.
Background technology
The method of current media flow rate test is a lot, but conventional rate-of flow method of testing to be tested medium into
Point, continuity, medium temperature, testing section structure and test environment etc. have harsher requirement, otherwise test accuracy
It will cannot be guaranteed, or be difficult to realize industrial practical application and popularization.Secondary air flow such as the single burner of station boiler is hot
Test, because overfire air port is complicated, test environment temperature is higher (more than 300 DEG C), test environment complexity (malleation, wind
Arranged in case), spout flowed fluctuation is frequent and overfire air port is complicated etc., while burner nozzle section different zones
Secondary wind speed difference in distribution it is also very big, a single point or several wind speed are tested using conventional method to calculate the side of spout flow
Method error is very big, with other non-contact methods, due to the influence of test environment and overfire air port design feature be difficult into
Row practical application is with promoting, and this not yet reports test device and method with dissemination at present.On the other hand, medium is worked as
Temperature be in it is high with it is extremely low under the conditions of when, because test material is limited, it is necessary to additionally increase cooling system and tracing system, lead
Cause test system is huge, and testing cost is very high.The system can by tested media reasonable in design, tested media flow,
Inlet temperature and heat exchanger etc., it need not can additionally increase cooling and tracing system while accurate test.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art, there is provided a kind of heat balance method of tests complex environment
The device and method of lower rate-of flow, the device and method can test the flow of medium under complex environment.
To reach above-mentioned purpose, the device that heat balance method of of the present invention tests rate-of flow under complex environment includes surveying
Examination medium flow ipe, tested media outflow pipeline, heat exchanger, data processor, it is situated between for detecting to test at heat exchanger entrance
First temperature sensor of matter temperature, for detecting the second temperature sensor of tested media temperature at heat exchanger exit, being used for
Some three-temperature sensors of tested media temperature and the 4th temperature for detecting measured medium temperature in detection heat exchanger
Spend sensor；
Heat exchanger is located in measured medium, and tested media flow ipe is connected with the entrance of heat exchanger, tested media stream
Go out pipeline with the outlet of heat exchanger to be connected, the output end of the first temperature sensor, the output end of second temperature sensor, the 3rd
The output end of temperature sensor and the output end of the 4th temperature sensor are connected with the input of data processor.
Medium is measured by introducing, the measurement of measured medium flow is carried out using temperature difference heat exchange and heat convection principle.
Also include the flow regulator being arranged on tested media flow ipe.
Also include Insulating sheath, wherein, Insulating sheath is located in measured medium, and tested media flow ipe passes through described exhausted
Hot sheath is connected with the entrance of heat exchanger, and tested media outflow pipeline is connected through the Insulating sheath with the outlet of heat exchanger
It is logical.
First temperature sensor is located at the center position of tested media flow ipe cross section, second temperature sensor position
In the center position of tested media outflow cross-section of pipeline.
The method of rate-of flow comprises the following steps under heat balance method of test complex environment of the present invention：Tested media
Medium flow ipe is entered in heat exchanger after tested, then tested media outflow is flowed into after being exchanged heat in heat exchanger with measured medium
In pipeline, the first temperature sensor detects the temperature information of tested media at heat exchanger entrance in real time, and by heat exchanger entrance
The temperature information of tested media is sent into data processor, and second temperature sensor, which detects to test at heat exchanger exit in real time, to be situated between
The temperature information of matter, and the temperature information of tested media at heat exchanger exit is sent into data processor, the 3rd temperature passes
Sensor detects the temperature information of tested media in heat exchanger in real time, and the temperature information of tested media in heat exchanger is sent to number
According in processor, the 4th temperature sensor detects the temperature information of measured medium in real time, and the temperature information of measured medium is sent out
Deliver in data processor；
Data processor is according to the temperature t of tested media at heat exchanger entrance1 entrance, at heat exchanger exit tested media temperature
Spend t1 outlet, measured medium temperature t2, tested media flow Q1, heat exchanger entrance cross-sectional area S1, measured medium it is transversal
Area S2, the cross-sectional area k of heat exchanger and effective heat exchange length L of heat exchanger3Calculate the average discharge Q of measured medium21；
Data processor detects the temperature of tested media in obtained heat exchanger, measured medium according to each 3rd sensor
Temperature t2, tested media flow Q1, at heat exchanger present position measured medium cross-sectional area S2, heat exchanger the coefficient of heat transfer
K, the cross-sectional area S of heat exchanger3And effective heat exchange length L' of heat exchanger calculates the stream of measured medium at heat exchanger present position
Measure Q22。
The theoretical temperatures scope of measured medium is -500 DEG C~1600 DEG C；
The flow rates of measured medium are 5m/s~60m/s；
Measured medium is gas or liquid；
Measured medium is single-phase medium or multinomial medium.
The temperature of measured medium is more than or less than the temperature of tested media, and the temperature difference of measured medium and tested media is got over
Greatly, measurement accuracy is higher.
The invention has the advantages that：
The device and method of rate-of flow is in concrete operations under heat balance method of test complex environment of the present invention, base
Rate-of flow under complex environment is tested in heat balance principle, specifically, heat exchanger is arranged in measured medium, then will test
Medium is passed through in heat exchanger, passes through tested media temperature, heat exchanger at tested media temperature at heat exchanger entrance, heat exchanger exit
The average discharge Q of interior tested media temperature and measured medium temperature computation measured medium21And it is tested and is situated between at heat exchanger present position
The flow Q of matter22, realize the purpose for testing rate-of flow under complex environment.It should be noted that disclosure is particularly well suited to higher
The flow rate test of temperature or lower temperature medium under complex environment, and not tested person cross section structure feature and gateway pipeline
The constraint of straight length condition, and it is simple in construction, and cost is relatively low, and commercial introduction application is strong.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Wherein, 1 be flow regulator, 2 be the first temperature sensor, 3 be second temperature sensor, 4 be Insulating sheath,
5 it is the 4th temperature sensor, 6 be three-temperature sensor, 7 be heat exchanger, 8 is data processor.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, the device of rate-of flow includes tested media under heat balance method of test complex environment of the present invention
Flow ipe, tested media outflow pipeline, heat exchanger 7, data processor 8, for detecting the porch tested media temperature of heat exchanger 7
Degree the first temperature sensor 2, the second temperature sensor 3 for detecting the exit tested media temperature of heat exchanger 7, for examining
Survey some three-temperature sensors 6 of tested media temperature and the 4th temperature for detecting measured medium temperature in heat exchanger 7
Spend sensor 5；Heat exchanger 7 is located in measured medium, and tested media flow ipe is connected with the entrance of heat exchanger 7, and test is situated between
Mass flow goes out pipeline and is connected with the outlet of heat exchanger 7, the output of the output end, second temperature sensor 3 of the first temperature sensor 2
The output end at end, the output end of three-temperature sensor 6 and the 4th temperature sensor 5 is connected with the input of data processor 8
Connect.
Present invention additionally comprises Insulating sheath 4 and the flow regulator being arranged on tested media flow ipe 1, its
In, Insulating sheath 4 is located in measured medium, and tested media flow ipe passes through the entrance phase of the Insulating sheath 4 and heat exchanger 7
Connection, tested media outflow pipeline are connected through the Insulating sheath 4 with the outlet of heat exchanger 7；First temperature sensor 2
Center position in tested media flow ipe cross section, second temperature sensor 3 are located at tested media outflow conduit cross-sectional
The center position in face.
The method of rate-of flow comprises the following steps under heat balance method of test complex environment of the present invention：Tested media passes through
Tested media flow ipe is entered in heat exchanger 7, then with flowing into tested media outflow after measured medium heat exchange in heat exchanger 7
In pipeline, the first temperature sensor 2 detects the temperature information of the porch tested media of heat exchanger 7 in real time, and by the entrance of heat exchanger 7
The temperature information of place's tested media is sent into data processor 8, and second temperature sensor 3 detects the exit of heat exchanger 7 in real time
The temperature information of tested media, and the temperature information of the exit tested media of heat exchanger 7 is sent into data processor 8, the
Three-temperature sensor 6 detects the temperature information of tested media in heat exchanger 7 in real time, and by the temperature of tested media in heat exchanger 7
Information is sent into data processor 8, and the 4th temperature sensor 5 detects the temperature information of measured medium in real time, and by tested Jie
The temperature information of matter is sent into data processor 8；
Data processor 8 is according to the temperature t of the porch tested media of heat exchanger 71 entrance, the exit tested media of heat exchanger 7
Temperature t1 outlet, measured medium temperature t2, tested media flow Q1, the entrance of heat exchanger 7 cross-sectional area S1, measured medium
Cross-sectional area S2, the cross-sectional area k of heat exchanger 7 and effective heat exchange length L of heat exchanger 73Calculate the average discharge of measured medium
Q21；
Data processor 8 detects the temperature of tested media, measured medium in obtained heat exchanger 7 according to each 3rd sensor
Temperature t2, tested media flow Q1, at the present position of heat exchanger 7 measured medium cross-sectional area S2, heat exchanger 7 heat exchange
The cross-sectional area S of coefficient k, heat exchanger 73And effective heat exchange length L' of heat exchanger 7 is calculated to be tested at the present position of heat exchanger 7 and is situated between
The flow Q of matter22。
The theoretical temperatures scope of measured medium is -500 DEG C~1600 DEG C；The flow rates of measured medium are 5m/s~60m/
s；Measured medium is gas or liquid；Measured medium is single-phase medium or multinomial medium；The temperature of measured medium be more than or
Less than the temperature of tested media, the temperature difference of measured medium and tested media is bigger, and measurement accuracy is higher.
The structure of heat exchanger 7 is designed according to the design feature in measurement section, and the material of heat exchanger 7 and heat exchange efficiency are according to quilt
Species, temperature, flow and the temperature flow scope determination for measuring medium of medium are measured, each three-temperature sensor 6 is by design
It is required that be uniformly distributed in vertically in heat exchanger 7, the number of three-temperature sensor 6 according to test it needs to be determined that；Tested media
Selection according to be measured medium species, flow, temperature, measuring environment and heat exchanger 7 determine.
In practical operation, the temperature difference of tested media and measured medium is bigger, and the heat transfer effect of heat exchanger 7 is stronger, system
Measuring accuracy is also higher；The constraint of not tested person cross section structure feature of the invention, it is particularly possible to suitable for traditional test methods not
The test of irregular section rate-of flow and the test of higher or lower medium temperature flow preferably tested.
It should be noted that the present invention can not be by conditions such as tested medium temperature, composition and testing section structures
Limitation, tested medium cross-section flow is accurately tested using heat balance method of, passes through tested media reasonable in design, test
Medium temperature, tested media flow, the structure of heat exchanger 7 and arrangement, are realized to the accurate of the rate-of flow under complex environment
Test, it is especially suitable for the flow rate test to higher temperature or lower temperature medium under complex environment.In addition, it is necessary to explanation
It is that the present invention can not only test the instantaneous delivery of measured medium, can also test its integrated flow, while test can be tested and cut
The local flow of measured medium inside face, measuring accuracy are estimated within ± 5%.
Claims (8)
1. the device of rate-of flow under a kind of heat balance method of test complex environment, it is characterised in that flow into and manage including tested media
Road, tested media outflow pipeline, heat exchanger (7), data processor (8), for detecting heat exchanger (7) porch tested media temperature
Degree the first temperature sensor (2), the second temperature sensor (3) for detecting heat exchanger (7) exit tested media temperature,
For detecting some three-temperature sensors (6) of the interior tested media temperature of heat exchanger (7) and for detecting measured medium temperature
4th temperature sensor (5) of degree；
Heat exchanger (7) is located in measured medium, and tested media flow ipe is connected with the entrance of heat exchanger (7), tested media
Outflow pipeline is connected with the outlet of heat exchanger (7), the output end of the first temperature sensor (2), second temperature sensor (3)
The output end of output end, the output end of three-temperature sensor (6) and the 4th temperature sensor (5) and data processor (8)
Input is connected.
2. the device of rate-of flow under heat balance method of test complex environment according to claim 1, it is characterised in that pass through
Tested media is introduced, the measurement of measured medium flow is carried out using temperature difference heat exchange and heat convection principle.
3. the device of rate-of flow under heat balance method of test complex environment according to claim 1, it is characterised in that also wrap
Include the flow regulator (1) being arranged on tested media flow ipe.
4. the device of rate-of flow under heat balance method of test complex environment according to claim 1, it is characterised in that also wrap
Insulating sheath (4) is included, wherein, Insulating sheath (4) is located in measured medium, and tested media flow ipe passes through the Insulating sheath
(4) entrance with heat exchanger (7) is connected, tested media outflow pipeline going out through the Insulating sheath (4) and heat exchanger (7)
Mouth is connected.
5. the device of rate-of flow under heat balance method of test complex environment according to claim 1, it is characterised in that first
Temperature sensor (2) is located at the center position of tested media flow ipe cross section, and second temperature sensor (3) is positioned at test
The center position of medium effuser road cross section.
6. a kind of method of rate-of flow under heat balance method of test complex environment, it is characterised in that based on described in claim 1
The device of rate-of flow, comprises the following steps under heat balance method of test complex environment：Tested media medium flow ipe after tested
Enter in heat exchanger (7), then with being flowed into after measured medium heat exchange in tested media outflow pipeline in heat exchanger (7), first
Temperature sensor (2) detects the temperature information of heat exchanger (7) porch tested media in real time, and heat exchanger (7) porch is surveyed
The temperature information of examination medium is sent into data processor (8), and second temperature sensor (3) detects heat exchanger (7) outlet in real time
Locate the temperature information of tested media, and the temperature information of heat exchanger (7) exit tested media is sent to data processor (8)
In, three-temperature sensor (6) detects the temperature information of heat exchanger (7) interior tested media in real time, and will be tested in heat exchanger (7)
The temperature information of medium is sent into data processor (8), and the 4th temperature sensor (5) detects the temperature letter of measured medium in real time
Breath, and the temperature information of measured medium is sent into data processor (8)；
Data processor (8) is according to the temperature t of heat exchanger (7) porch tested media1 entrance, heat exchanger (7) exit tested media
Temperature t1 outlet, measured medium temperature t2, tested media flow Q1, heat exchanger (7) entrance cross-sectional area S1, tested be situated between
The cross-sectional area S of matter2, the cross-sectional area k of heat exchanger (7) and effective heat exchange length L of heat exchanger (7)3Calculate the flat of measured medium
Equal flow Q21；
The temperature of heat exchanger (7) interior tested media that data processor (8) detects to obtain according to each 3rd sensor, measured medium
Temperature t2, tested media flow Q1, at heat exchanger (7) present position measured medium cross-sectional area S2, heat exchanger (7)
Coefficient of heat transfer k, heat exchanger (7) cross-sectional area S3And effective heat exchange length L' of heat exchanger (7) calculates position residing for heat exchanger (7)
Put the flow Q of place's measured medium22。
7. the method for rate-of flow under heat balance method of test complex environment according to claim 6, it is characterised in that tested
The theoretical temperatures scope of medium is -500 DEG C~1600 DEG C；
The flow rates of measured medium are 5m/s~60m/s；
Measured medium is gas or liquid；
Measured medium is single-phase medium or multiphase medium.
8. the method for rate-of flow under heat balance method of test complex environment according to claim 6, it is characterised in that tested
The temperature of medium is more than or less than the temperature of tested media, and the temperature difference of measured medium and tested media is bigger, and measurement accuracy is got over
It is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711093582.2A CN107870012A (en) | 2017-11-08 | 2017-11-08 | The device and method of rate-of flow under a kind of heat balance method of test complex environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711093582.2A CN107870012A (en) | 2017-11-08 | 2017-11-08 | The device and method of rate-of flow under a kind of heat balance method of test complex environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107870012A true CN107870012A (en) | 2018-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711093582.2A Pending CN107870012A (en) | 2017-11-08 | 2017-11-08 | The device and method of rate-of flow under a kind of heat balance method of test complex environment |
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| CN (1) | CN107870012A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579264A (en) * | 2020-05-22 | 2020-08-25 | 浙江银轮机械股份有限公司 | Temperature measurement method and temperature measurement tool |
| CN111854893A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Natural gas flowmeter verification loop system and gas temperature control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245285A (en) * | 1998-08-18 | 2000-02-23 | 重庆大学 | Method and equipment for continuously measuring flow of high-temp circulating ash |
| CN1271088A (en) * | 2000-06-02 | 2000-10-25 | 清华大学 | Measuring method and device for solid material flow rate |
| CN1793791A (en) * | 2006-01-09 | 2006-06-28 | 胡修泰 | Temperature difference flow meter and thermometer |
| CN103868558A (en) * | 2014-03-20 | 2014-06-18 | 迈瑞尔实验设备（上海）有限公司 | Powder flow online detection system and method |
-
2017
- 2017-11-08 CN CN201711093582.2A patent/CN107870012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245285A (en) * | 1998-08-18 | 2000-02-23 | 重庆大学 | Method and equipment for continuously measuring flow of high-temp circulating ash |
| CN1271088A (en) * | 2000-06-02 | 2000-10-25 | 清华大学 | Measuring method and device for solid material flow rate |
| CN1793791A (en) * | 2006-01-09 | 2006-06-28 | 胡修泰 | Temperature difference flow meter and thermometer |
| CN103868558A (en) * | 2014-03-20 | 2014-06-18 | 迈瑞尔实验设备（上海）有限公司 | Powder flow online detection system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854893A (en) * | 2019-04-26 | 2020-10-30 | 中国石油天然气股份有限公司 | Natural gas flowmeter verification loop system and gas temperature control method thereof |
| CN111854893B (en) * | 2019-04-26 | 2022-06-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter verification loop system and gas temperature control method thereof |
| CN111579264A (en) * | 2020-05-22 | 2020-08-25 | 浙江银轮机械股份有限公司 | Temperature measurement method and temperature measurement tool |
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Application publication date: 20180403 |
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