CN205940718U - Intelligence piston volume tube calibrating installation - Google Patents
Intelligence piston volume tube calibrating installation Download PDFInfo
- Publication number
- CN205940718U CN205940718U CN201620814538.0U CN201620814538U CN205940718U CN 205940718 U CN205940718 U CN 205940718U CN 201620814538 U CN201620814538 U CN 201620814538U CN 205940718 U CN205940718 U CN 205940718U
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- China
- Prior art keywords
- output end
- tube
- piston volume
- heat exchanger
- volume tube
- Prior art date
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- Expired - Fee Related
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- 238000009434 installation Methods 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000012795 verification Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 12
- 238000011897 real-time detection Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 229910001374 Invar Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011202 physical detection method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses an intelligence piston volume tube calibrating installation, including piston volume tube, constant temperature control unit, circulation pump package and verification system, piston volume tube is connected respectively with circulation pump package, constant temperature control unit and verification system in proper order, constant temperature control unit includes refrigerating unit, packs discharge system and heating unit, and the circulation pump package includes air compressor machine, pressurizing valve and oil pump, and the exit end of air compressor machine and the inlet connection of presser are provided with detection switch and lower detection switch in the pressurizing valve, go up the control output of detection switch and be connected with the input that stops of oil pump, and the control output of lower detection switch is connected with the start -up input of oil pump. The utility model discloses an intelligence piston volume tube directly concludes these the sensitiveest parameters that influences calibration uncertainty through the physics detection method of each parameter of online real -time detection piston, improves the credibility of uncertainty estimation.
Description
Technical field
The utility model is related to a kind of calibrating installation, more particularly, to a kind of intelligent piston volume tube calibrating installation.
Background technology
Traditional metering to flow for the ball volume pipe, the metering to temperature and all can be to heat energy to the calculation of heat energy
The accuracy of metering produces considerable influence；Accuracy in order to ensure flowmeter thermal metering, it usually needs make flowmeter have
Meet the necessarily required flow measurement degree of accuracy, the temperature measurement degree of accuracy and heat energy accuracy in computation etc.；Therefore, flowmeter exists
Before dispatching from the factory or maintenance etc. the stage would generally accept flow verification, temperature calibrating and calculation calibrating.
At present, the implementation carrying out flow verification to traditional ball volume pipe is usually：Setting includes pump, voltage stabilizing
Tank, the flow verification system of standard scale, flowmeter to be checked and water tank/pond, first, pump is by medium from water tank/pond
Extract out, medium flows back into water tank/pond after flowing through pump, vacuum tank, standard scale and flowmeter to be checked successively.Testing person
Flowmeter to be checked can be adjusted according to standard scale is adaptive to the metering of flow, so that volume pipe to be checked is tied to the metering of flow
Fruit is identical to the metric results of flow with standard scale as far as possible, so that the flow measurement degree of accuracy of volume pipe to be checked meets
Certain requirement.
In existing ball volume pipe verification system, water tank/pond is typically open, and thermal losses is very big；With
When, the difference between the HVAC operating mode of this flow verification system and reality is often very big, through flow verification system calibrating
When flowmeter is in the HVAC operating mode being applied to reality, often there is larger error in its flow measurement result, thus existing
The energy loss of flow verification system and flow verification accuracy all await further improving.
Utility model content
The purpose of this utility model is that provides a kind of intelligent piston volume tube calibrating dress to solve the above problems
Put.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model includes piston volume tube, temperature control unit, circulation pump group and verification system, described piston body
Long-pending pipe is connected respectively with circulation pump group, temperature control unit and verification system successively；Described temperature control unit includes refrigeration machine
Group, filling exhaust system and heating unit, described circulation pump group includes air compressor machine, pressurizing valve and oil pump, described air compressor machine
The port of export is connected with the entrance point of described pressurizer, is provided with detection switch and lower detection switch in described pressurizing valve, described
The control output end of upper detection switch is connected with the stopping input of described oil pump, the control output end of described lower detection switch with
The startup input of described oil pump connects.
Further, described verification system includes at least two calibrating circuits, and supporting difference bore detective tube can be used for not
Flowmeter with bore is installed.
Specifically, described circulation pump group is provided with circulating line stop valve, described circulating line stop valve is arranged at and follows
In the closed cycle path of ring pump group.
Further, described oil pump is provided with gas-removing filter, the port of export of described gas-removing filter is provided with electronic
Valve, the port of export of described motor-driven valve is connected with described volume tube body.
Specifically, the port of export of described air compressor machine is disposed with voltage-stablizer and pressure-regulating valve.
Further, described temperature control unit includes calibrating tube and heat exchanger unit, described calibrating tube and described heat exchange
The circulation of device unit connects, and described calibrating tube is provided with temperature transmitter, standard scale and temperature regulator, described temperature transmitter
Output end and the output end of described standard scale be connected with the input of described temperature regulator respectively, described temperature regulator
Output end is connected with the control output end of described heat exchanger unit.
Specifically, described temperature regulator includes comparator, PID controller and frequency converter, the output end of described calibrating tube
Connect with the input of described comparator, the output end of described comparator is connected with the input of described PID controller, described
The output end of PID controller is connected with the input of described frequency converter, the control output end of described frequency converter and described heat exchanger
Unit connects.
Further, described heat exchanger unit includes heat exchanger, refrigeration unit and water pump, described calibrating tube and described heat exchange
Device circulation connects, and the heat exchange port of described refrigeration unit is connected with the heat exchange port of described heat exchanger, described heat exchanger and described
It is provided with described water pump, the control output end of described temperature regulator is with described water pump control signal even between refrigeration unit
Connect.
The utility model, using intelligent piston volume tube, has been abandoned traditional ball volume pipe and has been repaiied by theoretical and empirical data
The method of positive normal volume, but by the sealing leak of on-line real-time measuremen piston, the change of volume pipe diameter, liquid gassiness
Bubble situation, pipe deforming degree and piston operate steadily the physical detection methods of degree, directly conclude that these impact calibrations are not true
The most sensitive parameter of fixed degree, to improve the confidence level of uncertainty estimation.
Brief description
Fig. 1 is plan of the present utility model；
Fig. 2 is described volume pipe artwork of the present utility model；
Fig. 3 is the structure chart of described circulation pump group of the present utility model；
Fig. 4 is the structural representation of described temperature control unit of the present utility model；
Fig. 5 is that described volume pipe of the present utility model is traced to the source chain figure；
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1,2 and 3, the utility model includes piston volume tube, temperature control unit, circulation pump group and calibrating
System, described piston volume tube is connected respectively with circulation pump group, temperature control unit and verification system successively；Described thermostatic control
Unit includes refrigeration unit, filling exhaust system and heating unit, and described circulation pump group includes air compressor machine, pressurizing valve and oil
Pump, the port of export of described air compressor machine is connected with the entrance point of described pressurizer, be provided with described pressurizing valve detection switch and
Lower detection switch, the control output end of described upper detection switch is connected with the stopping input of described oil pump, and described lower detection is opened
The control output end closed is connected with the startup input of described oil pump.
Described verification system includes at least two calibrating circuits, and supporting difference bore detective tube can be used for the stream of different bores
Gauge is installed.
Circulating line stop valve is provided with described circulation pump group, described circulating line stop valve is arranged at circulation pump group
In closed cycle path.
Gas-removing filter is provided with described oil pump, the port of export of described gas-removing filter is provided with motor-driven valve, described electricity
The port of export of dynamic valve is connected with described volume tube body.
The port of export of described air compressor machine is disposed with voltage-stablizer and pressure-regulating valve.
Described temperature control unit includes calibrating tube and heat exchanger unit, described calibrating tube and described heat exchanger unit circulation
Connect, described calibrating tube be provided with temperature transmitter, standard scale and temperature regulator, the output end of described temperature transmitter and
The output end of described standard scale is connected with the input of described temperature regulator respectively, the output end of described temperature regulator and institute
The control output end stating heat exchanger unit connects.
Described temperature regulator includes comparator, PID controller and frequency converter, the output end of described calibrating tube and described ratio
Connect compared with the input of device, the output end of described comparator is connected with the input of described PID controller, described PID controller
Output end be connected with the input of described frequency converter, the control output end of described frequency converter is connected with described heat exchanger unit.
Described heat exchanger unit includes heat exchanger, refrigeration unit and water pump, and described calibrating tube is with described heat exchanger circulation even
Connect, the heat exchange port of described refrigeration unit is connected with the heat exchange port of described heat exchanger, described heat exchanger and described refrigeration unit
Between be provided with described water pump, the control output end of described temperature regulator is connected with described water pump control signal.
Filling pipeline（DN80）It is made up of oil pump, check valve, gas-removing filter and electrically operated valve.Self-suction oil pump import and storage
Oil tank is connected, and the electrically operated valve in filling pipeline and oil pump are opened, the filled media into calibrating pipeline, in filling process, pipeline
Interior gas is automatically drained out by installing pinnacled floating ball exhaust valve, after filling finishes, starts pressurizer, line pressure is increased
It is added to setting pressure.Meanwhile, pressurizer has liquid automatic compensation function.
When system needs emptying, the electronic atmospheric valve being arranged on pipeline bottom is opened, and medium is discharged into storage in the mode of flowing automatically
Oil tank, during emptying, floating ball exhaust valve door automatically opens up, and all emptying and exhaust line are pooled to oil storage tank.
After the full medium of closed circuit filling, by pressurizer by system boost to setting pressure.In running, in pipeline
The discharge of portion's residual gas, and the factor such as the medium temperature volume reducing that leads to of decline leads to system pressure to decline, now plus
Depressor compensates depletion automatically, and system pressure is automatically added setup pressure value.
In running, the rising of medium temperature and other factors lead to system pressure to raise, and now pressurizer is automatic
Increase closed loop volume, system pressure is reduced to setup pressure value, pressure setting range 0-0.75MPa, maximum compensation is held
Long-pending 200L.
In the end of intelligent piston volume tube, one standard three step ring gauge is installed（Uncertainty 0.002%）, with piston one
It is provided with 12 on the invar alloy basic ring playing motion（Every 30 ° one）Distance-sensor, for real-time detection volume pipe diameter
Change with respect to ring standard gauge；
Pressure differential and sealing leak detection, for checking the abrasion of sealing ring and inner sealing situation in running；Many
Individual temperature sensor, revises sensitive parameter for real-time, and internal piston safety verification；Acceleration transducer, for proving inspection
Fix time the speed stability of inner carrier；Radial direction angle transducer, the piston position that the abrasion for checking piston slider bar leads to
Inconsistency；Processor, memory, converter, battery pack, wireless launcher etc. are arranged in piston confined space, at a high speed
Process live signal, and piston movement situation and correlation result are fed back to external processing unit.
12 sensors are arranged on an invar alloy moving together with piston（Invar）On basic ring, by with peace
It is contained in the ring standard gauge of volume pipe end（Volume pipe wall material manufactures）Compare, between drawing between basic ring and volume tube wall
Gap.The coefficient of volume expansion of sensor is about 0.001mm/ DEG C.
The response time of sensor is 0.5ms, under the highest running speed of piston（About 1.5m/s）, almost often run
0.75mm, diameter can be measured.When piston lentamente runs to volume pipe end, each sensor will be by standard
Three step ring gauges are recalibrated.
Detection switch is provided with the piston in described volume pipe, detection switch is installed in the pulse-triggered gold on piston
Belong to ring triggering.The normal volume of volume pipe depends in part on the distance between detection switch being arranged on volume tube wall.
The degree of accuracy calibration of detection switch triggering, by means of a demarcation piston, installs on the center line demarcating piston
One laser reflector.Connect a laser interferometer in volume pipe end, demarcate piston mechanical by unlimited volume pipe
Pull, when piston triggering ring is through detection switch, laser interferometer quickly writes down current distance, and same process passes through next
Individual detection switch.By calculating the distance difference between detection switch, realize the accurate calibration of linear measure longimetry.Due to test point air
The repdocutbility impact of refractive index and detection switch, the degree of accuracy of each detection switch is about 0.5mm.If additionally, therein
One detection switch is replaced, or when detection switch is not attached to last time identical position, calculates through test of many times,
20m overall length has the uncertainty of 2mm.
In the present embodiment, the design parameter of piston volume tube is as follows：
Calibration method：Volume tube method（Uncertainty≤0.02%）And method of standard table（Uncertainty≤0.05%）
Calibrating range of flow：5~1100m³/h
Tested flowmeter bore：DN50~DN300mm
Calibrating medium：Crude oil, seven oil, white oil, natural gas
Temperature stability：Better than 0.5 DEG C
Operating pressure：2.5MPa～25MPa
Temperature range：5~55℃
As shown in figure 5, from chain of tracing to the source, the transmission of measurement criteria is the survey to normal volume based on geometry mode
Fixed, by comparing volume pipe diameter online with a multi-step ring gauge, and with a laser interferometer measurement volume pipe two
Length between detection switch, has transparent analysis on Uncertainty.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all in this practicality
Any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
In the range of shield.
Claims (8)
1. a kind of intelligent piston volume tube calibrating installation, including piston volume tube it is characterised in that：Also include thermostatic control list
Unit, circulation pump group and verification system, described piston volume tube is divided with circulation pump group, temperature control unit and verification system successively
Do not connect；Described temperature control unit includes refrigeration unit, filling exhaust system and heating unit, and described circulation pump group includes
Air compressor machine, pressurizing valve and oil pump, the port of export of described air compressor machine is connected with the entrance point of described pressurizer, sets in described pressurizing valve
It is equipped with detection switch and lower detection switch, the control output end of described upper detection switch is connected with the stopping input of described oil pump
Connect, the control output end of described lower detection switch is connected with the startup input of described oil pump.
2. intelligent piston volume tube calibrating installation as claimed in claim 1 it is characterised in that：Described verification system include to
Few two calibrating circuits, the flowmeter that supporting difference bore detective tube can be used for different bores is installed.
3. intelligent piston volume tube calibrating installation as claimed in claim 1 it is characterised in that：Arrange in described circulation pump group
There is circulating line stop valve, described circulating line stop valve is arranged in the closed cycle path of circulation pump group.
4. intelligent piston volume tube calibrating installation as claimed in claim 1 it is characterised in that：It is provided with described oil pump and disappear
Air filter, the port of export of described gas-removing filter is provided with motor-driven valve, and the port of export of described motor-driven valve is with described volume pipe originally
Body connects.
5. intelligent piston volume tube calibrating installation as claimed in claim 1 it is characterised in that：The port of export of described air compressor machine
It is disposed with voltage-stablizer and pressure-regulating valve.
6. intelligent piston volume tube calibrating installation as claimed in claim 1 it is characterised in that：Described temperature control unit bag
Include calibrating tube and heat exchanger unit, described calibrating tube is connected with the circulation of described heat exchanger unit, and described calibrating tube is provided with temperature
Degree transmitter, standard scale and temperature regulator, the output end of the output end of described temperature transmitter and described standard scale respectively with
The input of described temperature regulator connects, the control output end of the output end of described temperature regulator and described heat exchanger unit
Connect.
7. intelligent piston volume tube calibrating installation as claimed in claim 6 it is characterised in that：Described temperature regulator includes
Comparator, PID controller and frequency converter, the input of the output end of described calibrating tube and described comparator connects, described comparison
The output end of device is connected with the input of described PID controller, the input of the output end of described PID controller and described frequency converter
End connects, and the control output end of described frequency converter is connected with described heat exchanger unit.
8. intelligent piston volume tube calibrating installation according to claim 6 it is characterised in that：Described heat exchanger unit includes
Heat exchanger, refrigeration unit and water pump, the circulation of described calibrating tube and described heat exchanger is connected, the heat exchange port of described refrigeration unit and
The heat exchange port of described heat exchanger connects, and is provided with described water pump, described temperature between described heat exchanger and described refrigeration unit
The control output end of modulator is connected with described water pump control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620814538.0U CN205940718U (en) | 2016-07-30 | 2016-07-30 | Intelligence piston volume tube calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620814538.0U CN205940718U (en) | 2016-07-30 | 2016-07-30 | Intelligence piston volume tube calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205940718U true CN205940718U (en) | 2017-02-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620814538.0U Expired - Fee Related CN205940718U (en) | 2016-07-30 | 2016-07-30 | Intelligence piston volume tube calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205940718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017620A (en) * | 2016-07-30 | 2016-10-12 | 温州恒海科技有限公司 | Calibration device with intelligent piston volume pipe |
-
2016
- 2016-07-30 CN CN201620814538.0U patent/CN205940718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017620A (en) * | 2016-07-30 | 2016-10-12 | 温州恒海科技有限公司 | Calibration device with intelligent piston volume pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 |