CN201731924U - Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device - Google Patents
Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device Download PDFInfo
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- CN201731924U CN201731924U CN2010201677204U CN201020167720U CN201731924U CN 201731924 U CN201731924 U CN 201731924U CN 2010201677204 U CN2010201677204 U CN 2010201677204U CN 201020167720 U CN201020167720 U CN 201020167720U CN 201731924 U CN201731924 U CN 201731924U
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- fan assembly
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Abstract
The utility model discloses a system for proving a flowmeter by a standard meter method and a vehicle-mounted gas flow standard device, which comprises a host component, front and rear vent pipes, a fan component and a control component. A novel system for detecting the flowmeter by standard method is arranged in a vehicle. The volume of the detecting system is reduced by employing a double-timing pulse acquisition card of advanced technology and a programmable logic controller (PLC) control technology. As the system can be installed in a vehicle through the vehicle-mounted structure, the meter proving location can be reached rapidly. The system has the advantage of fast and convenient operation.
Description
Technical field
The utility model relates to the meter proof field, relates in particular to a kind of novel method of standard table Flowmeter Verification System and vehicular gas flow standard device.
Background technology
Along with development and national economy, industrial, civilian kind to gas flow measurement, state parameter, flow range, accuracy of measurement evaluation etc. are had higher requirement.Particularly transfering natural gas from the west to the east, the enforcement of the policies such as commercialization of each big city civil natural gas makes the metering of gas be subjected to increasing attention, therefore the standard set-up of calibrating flowmeter is also more and more paid attention to.Current comparatively general standard set-up all is to be fixed on a certain place, can not move, this defective is for some the big flowmeter users or the user that need in time finish instrument calibration, very inconvenient, and use the vehicular gas flow standard device, and can drive to arrive the customer meter location, carry out instrument calibration rapidly, make things convenient for the instrument user, omitted the instrument censorship transportation, wait, intermediate link such as loading and unloading.
The normally single timing of pulse collection mode in the existing Flowmeter Verification System.Obtain the accurate umber of pulse of two pulse signals in can't realizing at one time, real-time, reliability, antijamming capability are all lower.
Summary of the invention
For addressing the above problem, it is stronger that the purpose of this utility model provides a kind of real-time, reliability, antijamming capability, and have the novel method of standard table Flowmeter Verification System of two sprocket pulse acquisition functions.
Another purpose provides a kind of movably vehicular gas flow standard device of vehicular structure that has.
The technical solution adopted in the utility model: a kind of novel method of standard table Flowmeter Verification System comprises host component, front and back snorkel, fan assembly, Control Component; Described host component comprises: the filtration gas tank of air inlet and filtering gas, the standard scale that standard temperature, flow, pressure signal are provided, a main gas tank that is used for gas storage;
The tested table of described front and back snorkel clamping connection, preceding snorkel connects host component, and back snorkel connects fan assembly;
Described fan assembly comprises a blower fan and a frequency converter assembly that the negative-pressure gas flow is provided for system;
Described Control Component comprises:
A PLC control device that is used to gather standard scale temperature, pressure signal and tested table temperature, pressure signal, control fan assembly duty;
A verification process that is used for by PLC control total system is finally realized the computing machine of the automatic Verification of system;
Described Control Component also comprises two sprocket pulse capture cards that are used to gather the umber of pulse of standard scale and tested table, described pair of sprocket pulse capture card is connected with computing machine, and described pair of sprocket pulse capture card comprises signal processing module, embedded microcontroller module, communication module, power module;
Described signal processing module collection and arrangement pulse signal send to the embedded microcontroller module;
The pulse signal that described embedded microcontroller resume module receives is handled back control communication module and is sent to computing machine;
Described communication module is connected with computing machine, adopts serial communication mode and compunication,
Described power module provides 5V and 3.3V power supply for two sprocket pulse capture cards.
More preferably scheme, described signal processing module adopt high speed photo coupling to isolate and shaping circuit.
Further, another kind of this system realizes the scheme that vehicle-mounted function adopts: described novel method of standard table Flowmeter Verification System is installed in the compartment, described host component places the compartment when work, described fan assembly, front and back snorkel and Control Component are provided with bracing frame, fan assembly and Control Component base are provided with pulley, during work, fan assembly and Control Component move to the work place by pulley, and bracing frame is propped up fixing.
More preferably scheme, described compartment front end establish interlayer place before and after the snorkel support, interlayer is provided with side door; Snorkel before and after place both sides, described compartment; Described host component is positioned over forward part centre position, compartment, next-door neighbour's interlayer; Described Control Component, fan assembly are positioned over the rear section, compartment side by side, the next-door neighbour back door.
Technical conceive of the present utility model is: two sprocket pulse capture card acquisition pulse, machine is handled and to be controlled each parts work by the PLC control circuit as calculated, and the structure of each parts is littler, can be placed in the compartment.
Technical advantage of the present utility model is: adopt two sprocket pulse capture cards, has the function that single timing collection and two timing are gathered simultaneously, be applicable to that two channel pulse signals gather in real time, and can accurately calculate the umber of pulse of the interior two channel pulse signals of section at one time, simultaneously also can be used for the hyperchannel pulse signal and switch to two channel pulse real-time signal acquisition, easy-to-connect, real-time is good, reliability is high, antijamming capability is strong.
Further technical advantage is: the structure of vehicular, be installed in the compartment, and can arrive the calibrating place rapidly, make things convenient for the client to examine and determine instrument, save servicing time and cost.
Description of drawings
Fig. 1 is the utility model embodiment integrated circuit structural representation
Fig. 2 is the utility model embodiment work structuring synoptic diagram
Fig. 3 is two timing capture card hardware structure diagrams
Fig. 4 is two timing capture card workflow diagrams
Fig. 5 is the vehicle-mounted synoptic diagram of the utility model embodiment
Fig. 6 is the concrete synoptic diagram of the utility model embodiment work.
Embodiment
With reference to Fig. 1, Fig. 2, in the utility model, computing machine is by devices communicatings such as PLC and on-the-spot frequency converter, transmitters, produce corresponding gas flow by the control of conversion blower fan, adopt the mode of negative pressure, pass through filtrator, air inlet jar, standard scale, main gas tank, preceding straight length, tested table successively, back straight length is discharged through blower fan then.After handling, the umber of pulse of two sprocket pulse capture cards collection standard scales and tested table sends to computing machine; The PLC control device is gathered standard scale temperature, pressure signal and tested table temperature, pressure signal and is sent to computing machine.Computing machine carries out corresponding data processing according to program setting of the present utility model, and simultaneously, computing machine is controlled the verification process of each valve switch, aperture and whole instrument by PLC, finally realizes the automatic Verification of instrument.
Described PLC control system adopts flow-compensated technology: device is the air quantity that utilizes PLC control of conversion device output control blower fan, and different flow point frequency converter input value differences reaches the purpose of in the device flow range tested flowmeter being carried out the current stabilization calibrating.In verification process, utilize PLC to carry out the function that pid loop is carried out in the PID computing, make flow in verification process, keep stable.Specific practice is as follows:
1. before work, obtain and the corresponding frequency converter analog value of compressor flow (not needing too accurate) through test earlier, and this value is placed PLC;
2. host computer is passed to the PLC controller with required flow value, and the PLC controller carries out linear interpolation arithmetic and obtains the frequency converter analog value and output to frequency converter by the mode that pre-defined algorithm approaches within a certain period of time one by one according to the data that preset;
3. after output is stablized, the flow value of host computer monitoring standard flowmeter, and send PLC to, PLC compares according to this flow and given flow value, and press algorithm and carry out the pid loop instruction, make the real-time flow data of host computer feedback and given flow value error in a very little scope.
With reference to figure 3, described pair of sprocket pulse capture card comprises embedded microcontroller, power module, communication module and the signal processing module with 4 32 programmable timer/counters, and described power module, communication module and signal processing module all are connected with described embedded microcontroller (ARM7).Described power module provides the function that 9V is converted into 5V and the 3.3V power supply described microcontroller of confession and described each module electricity consumption to the 24V power supply; Described communication module is to adopt the mode of RS485 serial communication, uploads data to host computer; Described signal processing module adopts high speed photo coupling to isolate and shaping circuit.
Described power module is given each chip power supply, has signal-poweredly increased the LC filtering circuit, and the method that increases filtering on lead reduces high frequency noise.In addition, communication module adopts the TVS pipe to protect, and avoids the order wire high pressure defective communication transceiver that (thunderbolt, surge) produces when being subjected to external interference.
Described signal processing module has used the single-pole triple-throw (SPTT) analog switch with low on-state impedance and low input and output capacitance characteristic, can realize ultralow distorted signals.
With reference to figure 4, be two timing capture card workflow diagrams, receive the signal of starting working of computing machine when two timing capture cards, embedded microcontroller begins to start working routine, judge acquisition mode, and control signal treatment circuit acquisition pulse, after collection finishes, upload data and give computing machine, power cut-off state.
With reference to figure 5, Fig. 6, a kind of vehicular pick-up unit, comprise host component (1), front and back snorkel (2) (11), fan assembly (10), Control Component (4), this system is installed in lining, a compartment (18), described host component (1) places compartment (18) when work, described fan assembly (10), front and back snorkel (2) (11) and Control Component (4) are provided with bracing frame, fan assembly (10) and Control Component (4) base are provided with pulley, during work, fan assembly (10) and Control Component (4) move to the work place by pulley, and bracing frame is propped up fixing.
Described compartment front end is established interlayer (19) and is placed front and back snorkel support (3), and interlayer (19) is provided with side door; Snorkel (2) (11) before and after place both sides, described compartment; Described host component (1) is positioned over forward part centre position, compartment, next-door neighbour's interlayer; Described Control Component (4), fan assembly (10) are positioned over the rear section, compartment side by side, the next-door neighbour back door.
Fig. 6 is the utility model overall work synoptic diagram, understands this concrete implementation column to help the technician, and its critical piece sign implication is as follows:
1. snorkel 3. snorkel supports before the host component 2.
4. Control Component 5. computing machines.6. printer
The machine flexible pipe 7.DN150 preceding pipe 8. lifting carts 9. are given a dinner for a visitor from afar
10. fan assembly 11. back snorkel 12. tested tables
13.DN100 pipeline section assembly 14.DN80 pipeline section assembly 15.DN50 pipeline section assembly
16.DN32 pipeline section assembly 17.DN25 pipeline section assembly
The utility model compact structure can be positioned on the car of an IVECO it easily, and in transportation, on your marks for each parts, is placed in the compartment in good orderly.After arriving the calibrating place, snorkel support (3) before and after can taking out by the side door in compartment, the back door is displaced to ground with the fan assembly (10) and the Control Component (4) of device, and assembles rapidly and carry out instrument calibration.
Every technician's notice: though the utility model is described according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this utility model; the repacking of any utilization inventive concept all will be included in this patent scope of patent protection.
Claims (4)
1. a novel method of standard table Flowmeter Verification System comprises host component, front and back snorkel, fan assembly, Control Component; Described host component comprises: the filtration gas tank of air inlet and filtering gas, the standard scale that standard temperature, flow, pressure signal are provided, a main gas tank that is used for gas storage;
The tested table of described front and back snorkel clamping connection, preceding snorkel connects host component, and back snorkel connects fan assembly;
Described fan assembly comprises a blower fan and a frequency converter assembly that the negative-pressure gas flow is provided for system;
Described Control Component comprises:
A PLC control device that is used to gather standard scale temperature, pressure signal and tested table temperature, pressure signal, control fan assembly duty;
A verification process that is used for by PLC control total system is finally realized the computing machine of the automatic Verification of system;
It is characterized in that: described Control Component also comprises two sprocket pulse capture cards that are used to gather the umber of pulse of standard scale and tested table, described pair of sprocket pulse capture card is connected with computing machine, and described pair of sprocket pulse capture card comprises signal processing module, embedded microcontroller module, communication module, power module;
Described signal processing module collection and arrangement pulse signal send to the embedded microcontroller module;
The pulse signal that described embedded microcontroller resume module receives is handled back control communication module and is sent to computing machine;
Described communication module is connected with computing machine, adopts serial communication mode and compunication,
Described power module provides 5V and 3.3V power supply for two sprocket pulse capture cards.
2. novel method of standard table Flowmeter Verification System according to claim 1 is characterized in that: described signal processing module adopts high speed photo coupling to isolate and shaping circuit.
3. vehicular gas flow standard device that comprises the described novel method of standard table Flowmeter Verification System of claim 1, it is characterized in that: described novel method of standard table Flowmeter Verification System is installed in the compartment, described host component places the compartment when work, described fan assembly, front and back snorkel and Control Component are provided with bracing frame, and fan assembly and Control Component base are provided with pulley.
4. vehicular gas flow standard device according to claim 3 is characterized in that: described compartment front end is established interlayer and is placed front and back snorkel support, and interlayer is provided with side door; Snorkel before and after place both sides, described compartment; Described host component is positioned over forward part centre position, compartment, next-door neighbour's interlayer; Described Control Component, fan assembly are positioned over the rear section, compartment side by side, the next-door neighbour back door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201677204U CN201731924U (en) | 2010-04-17 | 2010-04-17 | Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201677204U CN201731924U (en) | 2010-04-17 | 2010-04-17 | Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device |
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| CN201731924U true CN201731924U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201677204U Expired - Lifetime CN201731924U (en) | 2010-04-17 | 2010-04-17 | Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253665A (en) * | 2011-04-13 | 2011-11-23 | 中交第三航务工程局有限公司 | Pressure automatic control system and method |
| CN103076067A (en) * | 2011-10-25 | 2013-05-01 | 中国石油化工股份有限公司 | Full-automatic online calibrating device and calibrating method for vehicle-mounted large-aperture flow meter and calibrating method |
| CN103175589A (en) * | 2011-12-26 | 2013-06-26 | 新奥科技发展有限公司 | Measuring meter calibration device and method |
| CN103234605A (en) * | 2013-04-10 | 2013-08-07 | 温州百岸汽车零部件有限公司 | Contrast test method and tester for two-way air flow and reaction speed of automotive flow meter |
| CN103292872A (en) * | 2012-02-24 | 2013-09-11 | 上海工程技术大学 | Performance detecting system of air quality flowmeter |
| CN104154972A (en) * | 2014-08-01 | 2014-11-19 | 中国计量学院 | Flow calibration facility for ultrasonic water meters |
| CN104198017A (en) * | 2014-07-30 | 2014-12-10 | 成都千嘉科技有限公司 | Pulse output signal processing system of flow metering device |
| CN105352568A (en) * | 2015-11-25 | 2016-02-24 | 山东思达特测控设备有限公司 | Method for collecting and calculating low-frequency pulse signals of gas flow meter calibration device |
-
2010
- 2010-04-17 CN CN2010201677204U patent/CN201731924U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253665A (en) * | 2011-04-13 | 2011-11-23 | 中交第三航务工程局有限公司 | Pressure automatic control system and method |
| CN103076067A (en) * | 2011-10-25 | 2013-05-01 | 中国石油化工股份有限公司 | Full-automatic online calibrating device and calibrating method for vehicle-mounted large-aperture flow meter and calibrating method |
| CN103175589A (en) * | 2011-12-26 | 2013-06-26 | 新奥科技发展有限公司 | Measuring meter calibration device and method |
| CN103175589B (en) * | 2011-12-26 | 2017-04-12 | 新奥科技发展有限公司 | Measuring meter calibration device and method |
| CN103292872B (en) * | 2012-02-24 | 2016-03-16 | 上海工程技术大学 | A kind of air flow meter performance detecting system |
| CN103292872A (en) * | 2012-02-24 | 2013-09-11 | 上海工程技术大学 | Performance detecting system of air quality flowmeter |
| CN103234605A (en) * | 2013-04-10 | 2013-08-07 | 温州百岸汽车零部件有限公司 | Contrast test method and tester for two-way air flow and reaction speed of automotive flow meter |
| CN103234605B (en) * | 2013-04-10 | 2015-06-24 | 温州百岸汽车零部件有限公司 | Contrast test method and tester for two-way air flow and reaction speed of automotive flow meter |
| CN104198017A (en) * | 2014-07-30 | 2014-12-10 | 成都千嘉科技有限公司 | Pulse output signal processing system of flow metering device |
| CN104154972A (en) * | 2014-08-01 | 2014-11-19 | 中国计量学院 | Flow calibration facility for ultrasonic water meters |
| CN104154972B (en) * | 2014-08-01 | 2017-07-11 | 中国计量学院 | ultrasonic water meter flow standard device |
| CN105352568A (en) * | 2015-11-25 | 2016-02-24 | 山东思达特测控设备有限公司 | Method for collecting and calculating low-frequency pulse signals of gas flow meter calibration device |
| CN105352568B (en) * | 2015-11-25 | 2018-11-09 | 山东思达特测控设备有限公司 | A kind of acquisition computational methods of gas flowmeter caliberating device low frequency pulse signal |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |