CN220794379U - Flow detection device for flow computer - Google Patents
Flow detection device for flow computer Download PDFInfo
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- CN220794379U CN220794379U CN202322503286.2U CN202322503286U CN220794379U CN 220794379 U CN220794379 U CN 220794379U CN 202322503286 U CN202322503286 U CN 202322503286U CN 220794379 U CN220794379 U CN 220794379U
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000012360 testing method Methods 0.000 abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000012795 verification Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides a flow detection device for a flow computer, which comprises a flow computer, a data acquisition component and a data processor, wherein the flow computer is respectively connected with the data acquisition component and the data processor, and the data acquisition component is connected with the data processor. The utility model can simultaneously provide instantaneous flow and temperature and pressure standard parameters, solves the problem of larger channel test error, and ensures more accurate and reliable metering.
Description
Technical Field
The utility model mainly relates to the technical field of flow detection, in particular to a flow detection device for a flow computer.
Background
The long-distance natural gas pipeline is not separated and metered. Whereas the metering devices in the field of natural gas metering mainly comprise: flowmeter, pressure transmitter, temperature transmitter, flow computer, on-line gas chromatograph. The degree of accuracy or uncertainty of the meter should meet the relevant regulations. The flow computer plays a role of measuring brain, and the collected signals of the flowmeter, the pressure transmitter, the temperature transmitter and the online gas chromatograph are calculated through a flow model, so that the natural gas trade handover value is finally obtained. The accuracy of the flow quantity value needs to detect and analyze the errors of the on-site signal acquisition and conversion channels of the flow computer, and the existing detection device is easy to have the problems of larger detection errors and poor reliability of detection data.
Disclosure of utility model
The utility model aims to solve the technical problems of large detection error and poor reliability of detection data of a detection device, and provides a flow detection device for a flow computer.
The technical scheme for solving the technical problems is as follows: a flow detection device for a flow computer comprises a flow computer, a data acquisition component and a data processor,
The flow computer is respectively connected with the data acquisition component and the data processor, and the data acquisition component is connected with the data processor.
The beneficial effects of the utility model are as follows: the instantaneous flow and the temperature and pressure standard parameters can be provided simultaneously through the flow computer, the data acquisition component and the data processor, so that the problem of larger channel test error is solved, and more accurate and reliable metering is ensured.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the data acquisition component comprises a cabinet body, a power supply and an acquisition component for acquiring the temperature value and the pressure value of the flow computer,
The cabinet body is rectangle hollow structure, one side of the cabinet body is equipped with the cabinet door, the cabinet door with the one end swing joint of the cabinet body, be equipped with first notch and second notch on the cabinet door, first notch embedded in the cabinet door, the second notch embedded in the cabinet door, and be located first notch below, be equipped with the cabinet door handle on the cabinet door, the cabinet door handle is located and is close to one side of first notch, the cabinet body middle part transversely is equipped with article and places the board, the power sets up article and places the board top, collection part sets up on the internal portion bottom plate of cabinet, collection part with the power all with flow computer line connection, collection part with data processor line connection.
The beneficial effects of adopting the further scheme are as follows: the problem of the great passageway test error has been solved, has ensured that the measurement is more accurate reliable, has also improved the portability of device.
Further, the data acquisition assembly also comprises a drawer,
The drawer is located above the cabinet door and embedded in the cabinet door, a drawer handle is arranged on a side plate of the drawer, and a handle is arranged above the cabinet body.
The beneficial effects of adopting the further scheme are as follows: can place articles and also improve the portability of the device.
Further, the acquisition component is a multifunctional calibrator.
The beneficial effects of adopting the further scheme are as follows: the problem of the great passageway test error has been solved, has ensured that the measurement is more accurate reliable.
Further, the flow computer is used for obtaining the working condition flow value of the flow computer;
The acquisition component is used for acquiring a temperature value of the flow computer and a pressure value of the flow computer from the flow computer;
The data processor is used for substituting the temperature value of the flow computer and the pressure value of the flow computer into a pre-established flow calculation formula to calculate so as to obtain a standard condition flow value of the flow computer;
Substituting the working condition flow value of the flowmeter computer and the standard condition flow value of the flowmeter computer into a pre-established error calculation formula for calculation to obtain a flow detection result.
The beneficial effects of adopting the further scheme are as follows: the method can simultaneously provide instantaneous flow and temperature and pressure standard parameters, solves the problem of large channel test error, and ensures more accurate and reliable metering.
Drawings
Fig. 1 is a circuit connection diagram of a flow detection device for a flow computer according to an embodiment of the present utility model;
Fig. 2 is a block diagram of an acquisition component for a flow computer according to an embodiment of the present utility model.
In the drawings, the names of the components represented by the respective marks are as follows:
1. The cabinet body, 2, the power, 3, gather the part, 4, first notch, 5, second notch, 6, drawer, 7, handle.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
As shown in fig. 1, a flow rate detecting device for a flow rate computer includes a flow rate computer, a data collecting part and a data processor,
The flow computer is respectively connected with the data acquisition component and the data processor, and the data acquisition component is connected with the data processor.
It should be appreciated that the flow computer is connected to the data acquisition component and the data processor line, respectively, and the data acquisition component is connected to the data processor line.
Specifically, a flow computer working condition flow value is obtained through the flow computer, a flow computer temperature value and a flow computer pressure value are obtained from the flow computer through a data acquisition component, the flow computer temperature value and the flow computer pressure are input into the data processor to be processed, a flow computer standard condition flow value is obtained, and an error of the flow computer working condition flow value and the flow computer standard condition flow value is calculated, so that a flow detection result is obtained.
In the embodiment, the instantaneous flow and the temperature and pressure standard parameters can be provided through the flow computer, the data acquisition component and the data processor, so that the problem of larger channel test error is solved, and more accurate and reliable metering is ensured.
Alternatively, as an embodiment of the present utility model, as shown in fig. 1 and 2,
The data acquisition component comprises a cabinet body 1, a power supply 2 and an acquisition component 3 for acquiring the temperature value and the pressure value of the flow computer,
The cabinet body 1 is of a rectangular hollow structure, one side of the cabinet body 1 is provided with a cabinet door, the cabinet door is movably connected with one end of the cabinet body 1, the cabinet door is provided with a first notch 4 and a second notch 5, the first notch 4 is embedded in the cabinet door, the second notch 5 is embedded in the cabinet door and is positioned below the first notch 4, the cabinet door is provided with a cabinet door handle, the cabinet door handle is located near one side of the first notch 4, the horizontal article board of placing that is equipped with in the middle part of the cabinet body 1, the power 2 sets up article board top of placing, collection part 3 sets up on the internal bottom plate of the cabinet body 1, collection part 3 with power 2 all with flow computer line connection, collection part 3 with data processor line connection.
It will be appreciated that the power supply 2 is used to power the flow computer.
It should be understood that the line connections may be through cable connections.
In the embodiment, the problem of larger channel test error is solved, the more accurate and reliable metering is ensured, and the portability of the device is also improved.
Optionally, as an embodiment of the present utility model, the data acquisition assembly further comprises a drawer 6,
The drawer 6 is located above the cabinet door and embedded in the cabinet door, a drawer handle is arranged on a side plate of the drawer 6, and a handle 7 is arranged above the cabinet body 1.
It will be appreciated that the drawer 6 may be used to house a number of lines and data for easy user access.
In the above embodiment, the articles can be placed, and the portability of the device is also improved.
Alternatively, as an embodiment of the present utility model, the collecting unit 3 is a multifunctional calibrator.
Specifically, the multifunctional calibrator is a high-precision, high-resolution and multipurpose automatic meter calibration instrument integrating digital display voltage, current, frequency standard signal source, pt100 platinum resistance temperature analog standard signal source, digital voltage, current and frequency measurement functions, and can calibrate the following various meters: conventional industrial automation meters such as sensors, transmitters, regulators, recorders, intelligent flow totalizers, electric/gas actuators and the like which input and output analog quantities. It can also be used for checking and setting a series of interface boards of computer, such as resistance board, A/D board, D/A board, etc. The multifunctional calibrator can be widely applied to the fields of petroleum, chemical industry, smelting, papermaking, power generation, instrument industry, scientific research departments and the like, and can randomly combine various calibration functions including pressure, temperature, electricity and frequency (including pulse) signal calibration in compact and small and ergonomic design.
It will be appreciated that the complexity of the device is reduced and the portability of the device is also improved by the multi-function calibrator.
In the embodiment, the problem of larger channel test error is solved, and more accurate and reliable metering is ensured.
Optionally, as an embodiment of the present utility model, the flow computer is configured to obtain a flow value of the working condition of the flow computer;
The acquisition component 3 is used for acquiring a temperature value of the flow computer and a pressure value of the flow computer from the flow computer;
The data processor is used for substituting the temperature value of the flow computer and the pressure value of the flow computer into a pre-established flow calculation formula to calculate so as to obtain a standard condition flow value of the flow computer;
Substituting the working condition flow value of the flowmeter computer and the standard condition flow value of the flowmeter computer into a pre-established error calculation formula for calculation to obtain a flow detection result.
Specifically, the operation steps are as follows:
(1) Adjusting the flow computer to a maintenance mode, and recording a flow base;
(2) Recording flow computer related information and experimental environment;
(3) Selecting the components as keyboard values;
(4) Connecting a multifunctional calibrator (namely a collecting component 3) to a temperature channel interface of a flow computer, inputting analog signals (currents), and simulating temperature values of 5 points in a range of measuring ranges;
(5) Connecting a multifunctional calibrator (namely a collecting component 3) to a pressure channel interface of a flow computer, inputting analog signals (currents), and simulating 5 point pressure values in a range of measuring ranges;
(6) Calculating a flow signal value to be input according to the test flow, and simulating an input flow signal;
(7) After the temperature, the pressure and the flow are stable, reading a temperature standard value and a pressure standard value, and simultaneously reading the standard condition flow of a flow computer and recording;
(8) Restoring all the modified parameters.
Specifically, the pre-established flow calculation formula is as follows:
Wherein, q n: turbine flowmeter standard condition volume flow, m 3/h; q: turbine flowmeter operating mode volume flow, m 3/h; p: absolute pressure in working state, kPa; p n: standard atmospheric pressure, 101.325kPa; t: gas temperature in standard state, 293.15K; t n: the gas temperature under the working state, K; z: gas compression factor in working state, (dimensionless); z n: gas compression factor in standard state, (dimensionless).
In the embodiment, the instantaneous flow and the temperature and pressure standard parameters can be provided at the same time, so that the problem of larger channel test error is solved, and more accurate and reliable metering is ensured.
Optionally, as another embodiment of the utility model, the utility model integrates the standard signals required by the detection of the flow computer, constructs a set of device capable of simultaneously providing the standard parameters of instantaneous flow and temperature and pressure, carries out detection and evaluation on the flow computer, and solves the problems of detection, evaluation and calibration of the flow computer.
Optionally, as another embodiment of the utility model, the utility model adopts the multifunctional calibrator to replace the functions of 3 aspects of a frequency signal generator, a general counter, a standard current source, a millivolt source, a standard resistor box and the like, and is connected with the corresponding wiring port of the flow computer to be evaluated by selecting different input and output modules of the multifunctional calibrator and utilizing a signal connecting wire.
Alternatively, as another embodiment of the present utility model, the flow computer detection evaluation step of the present utility model is as follows:
I. instantaneous flow signal:
a. The test point is near the lower limit, 0.25 times, 0.5 times, 0.75 times and 1 times of the range of the input signal corresponding to the flow range of the flow sensor (or transmitter).
B. Selecting a detection point, and performing primary measurement by an integrating instrument;
c. the error E i for each flow point is calculated according to equation (1), as follows:
Wherein q i is a flow integrating instrument indication value of the flow detection point, m 3/h or kg/h.
Q si -theoretical calculation of flow at the flow rate measurement point, m 3/h or kg/h.
Note that: the calculation of q si should be performed according to the type of flow meter used and the operating conditions of the measured medium at the verification point, according to the national relevant standards of such flow meter and the metering verification rules (or using the calculation software authenticated by legal metering verification units).
II, temperature and pressure signals:
a. The test point was taken to be around 0.25a max、0.5Amax、0.75Amax、Amax.
Note that: ①Amax Is the upper limit value of the analog input signal.
② For the temperature signal, a max is the upper limit of the design task book temperature by adopting a thermal resistor and a thermocouple.
B. And (5) according to the selected detection points, the integrating instrument performs one-time measurement.
C. calculating the error E Ai of each verification point according to the formula (2), wherein the maximum allowable error requirement of the integrating instrument in the use specification is met, and the formula is as follows:
In the formula, A i is a value displayed by a detection point integrating instrument, kPa or ℃.
A Si -theoretical calculation value corresponding to the input signal of the verification point, kPa or DEG C.
A max -the theoretical calculated maximum value for the input signal, kPa or ℃.
Optionally, as another embodiment of the utility model, the utility model can be used for carrying out the detection and evaluation of the natural gas flow computer, can be widely used for flow computer detection systems of natural gas long-distance pipeline stations, natural gas purification stations, LNG receiving stations and the like, and is also suitable for flow computer systems of oil pipelines.
Optionally, as another embodiment of the utility model, the utility model detects and evaluates 256 natural gas flow computers, discovers and solves the problem of larger channel test error, and ensures more accurate and reliable metering.
The application method of the utility model is as follows: the flow computer obtains the working condition flow value of the flow computer, the data acquisition component obtains the temperature value of the flow computer and the pressure value of the flow computer from the flow computer, the temperature value of the flow computer and the pressure of the flow computer are input into the data processor to be processed to obtain the working condition flow value of the flow computer, and the error of the working condition flow value of the flow computer and the working condition flow value of the flow computer is calculated, so that the flow detection result is obtained.
The utility model has the advantages that the utility model can simultaneously provide instantaneous flow and temperature and pressure standard parameters, solves the problem of larger channel test error, and ensures more accurate and reliable metering.
The foregoing description of the preferred embodiment of the utility model is not intended to limit the utility model to the precise form disclosed, and any modifications, equivalents, and improvements made within the spirit and principles of the utility model are intended to be included within the scope of the utility model, as the utility model is not limited to the details of computer program modification.
Claims (4)
1. A flow detection device for a flow computer is characterized by comprising a flow computer, a data acquisition component and a data processor,
The flow computer is respectively connected with the data acquisition component and the data processor, and the data acquisition component is connected with the data processor;
The data acquisition component comprises a cabinet body (1), a power supply (2) and an acquisition component (3) for acquiring the temperature value and the pressure value of the flow computer,
The utility model discloses a cabinet, including cabinet body (1), collection part (3) and data processor circuit connection, cabinet body (1) are equipped with cabinet door, cabinet body (1) one side is equipped with cabinet door, cabinet door with the one end swing joint of cabinet body (1), be equipped with first notch (4) and second notch (5) on the cabinet door, first notch (4) embedded in the cabinet door, and be located first notch (4) below, be equipped with the cabinet door handle on the cabinet door, the cabinet door handle is located and is close to one side of first notch (4), cabinet body (1) middle part transversely is equipped with article and places the board, power (2) set up article place the board top, collection part (3) set up on cabinet body (1) inside bottom plate, collection part (3) with power (2) all with flow computer circuit connection, collection part (3) with data processor circuit connection.
2. A flow sensing device for a flow computer according to claim 1, characterized in that the data acquisition means further comprises a drawer (6),
The drawer (6) is located above the cabinet door and embedded in the cabinet door, a drawer handle is arranged on a side plate of the drawer (6), and a handle (7) is arranged above the cabinet body (1).
3. A flow detection device for a flow computer according to claim 1, characterized in that the acquisition means (3) is a multifunctional prover.
4. The flow sensing device for a flow computer of claim 1, wherein the flow computer is configured to obtain a flow computer operating condition flow value;
the acquisition component (3) is used for acquiring a flow computer temperature value and a flow computer pressure value from the flow computer;
The data processor is used for substituting the temperature value of the flow computer and the pressure value of the flow computer into a pre-established flow calculation formula to calculate so as to obtain a standard condition flow value of the flow computer;
Substituting the working condition flow value of the flowmeter computer and the standard condition flow value of the flowmeter computer into a pre-established error calculation formula for calculation to obtain a flow detection result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322503286.2U CN220794379U (en) | 2023-09-14 | 2023-09-14 | Flow detection device for flow computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322503286.2U CN220794379U (en) | 2023-09-14 | 2023-09-14 | Flow detection device for flow computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220794379U true CN220794379U (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322503286.2U Active CN220794379U (en) | 2023-09-14 | 2023-09-14 | Flow detection device for flow computer |
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| Country | Link |
|---|---|
| CN (1) | CN220794379U (en) |
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2023
- 2023-09-14 CN CN202322503286.2U patent/CN220794379U/en active Active
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