CN207301826U - Industrial differential pressure control device detection device - Google Patents
Industrial differential pressure control device detection device Download PDFInfo
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- CN207301826U CN207301826U CN201721214990.4U CN201721214990U CN207301826U CN 207301826 U CN207301826 U CN 207301826U CN 201721214990 U CN201721214990 U CN 201721214990U CN 207301826 U CN207301826 U CN 207301826U
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Abstract
The utility model provides a kind of industrial differential pressure control device detection device.The detection device includes pressure console, two digital pressure testers and software kit.The pre- press pump of automatic gas built in pressure console, it produces pressure and is stored in built-in gas appearance, eliminates the reliance on heavy gas cylinder as external pressure gas source, small, light-weight.Main Regulator uses the high accuracy digital pressure testers customized, measurement range (0 ~ 4) MPa can be customized as requested, 0.02 grade of class of accuracy, error in reading ± 0.02%, and the acquisition function with electric current and magnitude of voltage, meet the requirement to accuracy in industrial differential pressure control device detection.Detection device provided by the utility model, under normal pressure can not only be detected industrial differential pressure control device, but also can be detected under high static pressure, and point-by-point detection can also be realized in detection process；And the detection device has good portability and mobility, it is adapted to Site Detection.
Description
Technical field
Detection and the control device of industrial circle pressure are the utility model is related to, specifically a kind of industrial differential pressure control
Control equipment detection device.
Background technology
In industrial processes, pressure parameter is a very important procedure parameter, and pressure control equipment is at any time
The important equipment of pressure is monitored and controlled.Wherein differential pressure transmitter is to measure relative difference between two pressure in industrial processes
A kind of pressure transmitter.Static pressure is the operating pressure that differential pressure transmitter is born in industry spot.Ideally, differential pressure becomes
Send the output valve of device only related to input differential pressure value, and its static pressure born is unrelated.But in actually using, the meter of differential pressure transmitter
Amount performance is influenced by static pressure change.
JJG882-2004《Pressure transmitter》National metrological verification regulations requirement carries out the static pressure performance of differential pressure transmitter
Calibrating.But often it is ignored in actually detected due to lacking corresponding detection device and detection method, the project.In real work
In it has been found that under high static pressure, there may be very big signal drift for the differential pressure transmitter of static pressure poor performance.Therefore in order to protect
It is particularly important that demonstrate,proving the work of the accurate safety of differential pressure transmitter, the detection under high static pressure carried out to it.
There is detection device of the liquid piston pressure gauge of two 6MPa of enterprise's production and application as standard in the country at present.By
In differential pressure transmitter requirement by the use of gas as working media, so being configured with gas cylinder, oil and gas separator and supporting pipeline, valve
Deng.Although the device can detect differential pressure transmitter under high static pressure, have the following disadvantages：
1) differential pressure transmitter under high static pressure can only be measured, the differential pressure transmitter under normal pressure can not be detected.
2) standard used in is two piston manometers, so package unit is heavy, volume is big；With gas cylinder and isolation
Device, pipeline are mixed and disorderly.In addition it can only be used by gravity effect, piston manometer in a place, scene can not be carried to
Detection.
3) since required differential pressure is directly placed by piston weight, each differential pressure value is needed by complicated calculations, then is added
Put corresponding miniweights, heavy workload.
4) the device gas cylinder and oil and gas separator, it is complicated, testing staff is required high.It is required that operator cannot
Make a fault, be otherwise easily damaged standard and tested equipment.Evaporate and gasify additionally, due to working media, can polluted gas pipe
Road.
Based on disadvantage mentioned above, above-mentioned differential pressure measuring device poor practicability, it is difficult to meet actual demand, meet in fact so developing
The industrial differential pressure control device detection device that border needs is extremely urgent.
Utility model content
The purpose of this utility model is just to provide a kind of industrial differential pressure control device detection device, is filled with solving existing detection
Put can only detect under normal pressure, can not be detected under high static pressure and not Portable belt etc. the problem of.
What the purpose of this utility model was realized in：A kind of industry differential pressure control device detection device, including pressure control
Platform processed, is provided with the first gas appearance, the second gas holds and the pre- press pump of automatic gas in the pressure console；The automatic gas is pre-
Press pump is held with first gas by back-up valve and connected, and first gas holds is connected with two branches again, wherein on a branch
Be disposed with low pressure valve, the first tester and relief valve, be disposed with another branch balanced valve, the second tester and
Second gas holds；First tester, second tester, the back-up valve, the balanced valve, the low pressure valve and
The relief valve is arranged on the pressure console；Meanwhile reset valve is additionally provided with the pressure console, it is described
Reset valve holds with first gas in pressure console and connects；First tester passes through the relief valve and industrial differential pressure
The low-pressure end of control device connects, and first tester is used for the pressure value for detecting industrial differential pressure control device low-pressure end；Institute
State the second tester by second gas appearance with the high-pressure side of industrial differential pressure control device to connect, second tester is used for
The pressure value of the industrial differential pressure control device high-pressure side of detection.Detection data are captured by pressure testers and are transmitted to computer,
Data processing is carried out using software kit.
The industry differential pressure control device is differential pressure transmitter, differential pressure controller, differential pressure levelmeter, difference gauge or differential pressure gauge
Deng.
First tester and second tester are the high accuracy digital pressure testers of customization.
Built-in power is equipped with first tester and second tester, the built-in power is to described
While first tester and second tester are powered, the industrial differential pressure control device power supply is returned.
First tester and second tester connect with computer, first tester and described second
Tester surveys data and is transmitted to computer, meanwhile, industrial differential pressure control device surveys differential pressure data and is also transmitted to computer,
Data processing is carried out by computer, so as to fulfill the calibrating to industrial differential pressure control device.
The pressure measurement range of first tester and second tester can be customized as requested, accuracy
Grade is 0.02 grade, and error in reading is ± 0.02%.
Industry differential pressure control device detection device provided by the utility model, has the following advantages that：
1) device under normal pressure can not only be detected industrial differential pressure control device, but also may be implemented in Gao Jing
Pressure is detected industrial differential pressure control device, and point-by-point detection can be realized in detection process；
2) device sets the pre- press pump of automatic gas in pressure console, it, which produces pressure and is stored in built-in gas, holds
In, heavy gas cylinder is eliminated the reliance on as external pressure gas source, it is small, light-weight, drastically increase detection device
Portability；
3) device selects the intelligent digital pressure testers of customization, and built-in power supply, can depart from external power supply, realize
To the detection of industrial differential pressure control device under powering-off state, the portability and mobility of package unit are further increased, is adapted to
Site Detection；
4) the matched with devices software can realize detection database preparation, can voluntarily judge industrial differential pressure control device
Range, has data dynamic tracing compensation debugging functions, is suitable for and corrects the slight leakage or fluctuation of pressure value, and to non-whole
The sampled data for pressing force value is corrected in real time, is effectively shortened the detection time to industrial differential pressure control device.
By the utility model, the skill that differential pressure type instrument provides science can be detected for measurement technology mechanisms at different levels and enterprise
Art foundation and detection device, the safety in production for society escort.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1st, the pre- press pump of automatic gas, 2, reset valve, 3, balanced valve, 4, back-up valve, the 5, first gas holds, and 6, low pressure valve,
7th, the first tester, 8, relief valve, the 9, second gas holds, the 10, second tester, and 11, computer.
Embodiment
Industry differential pressure control device detection device provided by the utility model includes a pressure console and two fixed
The high accuracy digital pressure testers of system.As shown in Figure 1, before the first tester 7 and the second tester 10 in Fig. 1 be
The high accuracy digital pressure testers of two customizations.Pressure console（Not shown in Fig. 1）It is a babinet in fact
Structure, the first gas is provided with pressure console and holds the 5, second gas appearance 9 and the pre- press pump 1 of automatic gas.The pre- press pump 1 of automatic gas
The pressure gas source of 6MPa can be provided, can be fast and effeciently to the low of industrial differential pressure control device by the pre- press pump 1 of automatic gas
Pressure side and high-pressure side are forced into required pressure value.When setting insufficient pressure, the pre- press pump 1 of automatic gas Self-pressurizing agri and can be kept
To setting value.It is exactly filling gas in fact that first gas appearance 5 and the second gas, which hold 9,（Can be gases at high pressure）Container, both works
By the use of being pressurized buffer room and pressure locker room as whole detection device.Pressure caused by the pre- press pump 1 of automatic gas can store up
There are the first gas hold 5 and second gas hold in 9, so that the detection device has small, again departing from external pressure gas source
The characteristics of light is measured, is convenient for carrying.
First tester 7 and the second tester 10 are arranged on pressure console, meanwhile, also set on pressure console
Five valves are equipped with, are reset valve 2, balanced valve 3, back-up valve 4, low pressure valve 6 and relief valve 8 respectively.Each valve and the first verification
Instrument 7, the second tester 10, the first gas hold the 5, second gas hold 9 and the pre- press pump 1 of automatic gas between connection relation as shown in Figure 1,
What the connecting line between two neighboring device represented is pipeline connection.
With reference to figure 1, the pre- press pump 1 of automatic gas holds 5 by back-up valve 4 and the first gas and connects, the first gas hold 5 one side with it is micro-
Adjust valve 2 to connect, on the other hand connect two branches again, wherein the low-pressure end a of an industrial differential pressure control device of branch connection, separately
The high-pressure side b of one industrial differential pressure control device of branch connection.Hold in the first gas and set successively on the branch between 5 and low-pressure end a
Low pressure valve 6, the first tester 7 and relief valve 8 are equipped with, the first tester 7 is low with industrial differential pressure control device by relief valve 8
Pressure side a connects, and the first tester 7 is used for the pressure value for detecting industrial differential pressure control device low-pressure end a；Hold 5 and height in the first gas
Balanced valve 3 is disposed with branch between pressure side b, the second tester 10 and the second gas hold 9, the second tester 10 is by the
Two gas hold 9 and connect with the high-pressure side b of industrial differential pressure control device, and the second tester 10 is used to detect industrial differential pressure control device height
The pressure value of pressure side b.Reset valve 2 directly holds 5 with the first gas in pressure console and connects.
RS232 communication interfaces built in first tester 7 and the second tester 10, its pressure measurement range be (0 ~ 4) MPa or
It can customize on request, class of accuracy is 0.02 grade, and error in reading is ± 0.02%.First tester 7 and the second tester 10 exist
Used in the utility model as standard, not only accuracy is high for it, compact easy to carry, and built-in power supply, can take off
From external power supply, industrial differential pressure control device power supply can be also given, realizes the detection to industrial differential pressure control device under powering-off state,
With good mobility, it is adapted to Site Detection.
First tester 7 and the second tester 10 connect with computer 11,10 institute of the first tester 7 and the second tester
Survey data and be transmitted to computer 11, meanwhile, industrial differential pressure control device surveys differential pressure data and is also transmitted to computer 11.Calculate
Be provided with supporting software in machine 11, software possesses the function of detection database preparation, can automatic decision be detected industrial differential pressure
Control device range, has data dynamic tracing compensation debugging functions, is suitable for and corrects the slight leakage or fluctuation of pressure value,
And the sampled data of non-integral point pressure value is corrected in real time.
Industrial differential pressure control device mainly has differential pressure transmitter, differential pressure controller, differential pressure levelmeter, difference gauge and differential pressure gauge
Deng.In industrial differential pressure control device in the highest flight, therefore, the present embodiment is situated between differential pressure transmitter by taking differential pressure transmitter as an example
Continue the detection device.
The present embodiment may be implemented in the range of (0 ~ 4) MPa static pressure to (0~400) kPa and above range, 0.2 grade and with
The detection of the differential pressure transmitter of lower class of accuracy, and the work such as data processing and output storage is carried out automatically, improve detection
Efficiency and the introducing for reducing human error.The gas that gases at high pressure can be stored built in pressure console holds, digital pressure testers
Power with built-in computer, realize the detection to differential pressure transmitter under powering-off state, when further increasing Site Detection
Portability and mobility.
Differential pressure transmitter be in industrial processes measure two pressure between relative difference a kind of pressure transmitter, output
Signal is mainly the DC signal of 0mA~10mA and 4mA~20mA (or 1V~5V).
The conventional detection of differential pressure transmitter（Detection i.e. under normal pressure）Method is as follows：
According to JJG882-2004《Pressure transmitter》Vertification regulation requirement：The selection of calibrating point should be substantially uniformly distributed by range,
5 points should be generally no less than including upper limit value, lower limit.Below by taking output quantity is the tested differential pressure transmitter of electric current as an example
It is introduced, after 24V is powered, gathers the pressure value and output current value of differential pressure transmitter height pressure side, is denoted as first detection
Point, i.e. zero point.Low-pressure end keeps logical air, and high-pressure side is smoothly inputted by the pre- press pump 1 of automatic gas since zero point
Pressure signal is to each test point（Respectively 25% range, 50% range and 75% range）, read and record output valve until the upper limit
Full scale point；Then opposite direction steadily changes pressure signal to each test point, reads and records output valve until lower limit zero point,
This is 5 test point uniform circulations.So carry out the detection of two circulations.
Calculate the corresponding current error value of each test point and return difference value（The difference of down stroke and up stroke）, take each point electric
The maximum and return difference maximum of stream error value are as the verification result under atmospheric pressure.
The high static pressure detection method of differential pressure transmitter is as follows：
First, the leakproofness of package unit is checked.The balanced valve 3 of opening detecting device, connects high-low pressure room, when
After differential pressure transmitter pressure at two ends value reaches static pressure and stablizes, high-low pressure side pressure force value and current value at this time are read, is used as the
The zero value of one point.Balanced valve 3 is closed, operates the relief valve 8 of low-pressure end, 25% range is decompressed to low-pressure end, 50% range,
At 75% range and full scale, corresponding differential pressure value and output current value are read after stablizing, is completed under differential pressure transmitter high static pressure
The detection of up stroke.By pressurizeing to low-pressure end, the data of down stroke are read.Calculate the corresponding current error of each test point
Value and return difference value（The difference of down stroke and up stroke）, take each point current error value maximum and return difference maximum as high static pressure
Under verification result.
When detection device works, static pressure is forced into by the built-in pre- press pump 1 of automatic gas, its process is by back-up valve 4
To control pressurization.Under differential pressure transmitter atmospheric pressure（Under non-static pressure）In detection, the first gas hold 5 and second gas hold 9 not only can be with
As pressurized buffer room, and when specified pressure point is detected from pressure maintaining effect.First gas holds 5 and the progress of reset valve 2 one
Bodyization designs, and fine setting scope is significantly lifted.Since the balanced valve 3 in detection process and relief valve 8 are always maintained at opening
State, low pressure valve 6 is under atmospheric pressure（Under non-static pressure）Play relief valve in detection.Detected in differential pressure transmitter high static pressure
In, balanced valve 3 plays the role of vital, it can allow differential pressure transmitter height pressure side to keep communicating under high static pressure, defeated
Go out signal and be in zero value.Later data processing in, at high static pressure zero-bit alignment be also using balanced valve 3 close before state as
Foundation.This detection device uses two digital pressure testers, the pressure value of the first tester 7 detection low-pressure end a, the second verification
Instrument 10 detects the pressure value of high-pressure side b.High static pressure detection mesolow end a pressure is added and subtracted by relief valve 8 and reset valve 2
Press, pressure value forms differential pressure between two testers.Advantage using two digital pressure testers is, it is only necessary to which detection is poor
Value.Even if slight leakage occurs in system, as long as this difference meets differential pressure demand, shadow of the leakage to testing result is reduced
Ring.
The electric signal of two digital pressure testers record high-low pressure both ends real-time pressure values and tested differential pressure transmitter, warp
It is transferred to by RS232 serial communications in computer software and carries out data processing.Each valve of detection device is first shut off,
After differential pressure transmitter connection to be detected, balanced valve 3, low pressure valve 6 and relief valve 8 are opened, makes the high-low pressure of differential pressure transmitter
End communicates.At this time, both ends are all communicated with atmospheric pressure, and computer reads and records zero value at this time.Close relief valve 8 and low pressure
Valve 6, is pressurizeed to high-pressure side b by the built-in pre- press pump 1 of automatic gas and back-up valve 4, carries out the conventional detection of differential pressure transmitter.
When differential pressure transmitter is detected under high static pressure, relief valve 8 is closed, opens low pressure valve 6, balanced valve 3 and back-up valve 4, automatically
Pre- 1 direct weighting of press pump of gas closes back-up valve 4, balanced valve 3 and low pressure valve 6, up stroke is detected by relief valve to static pressure 4MPa
8 control low-pressure end a are depressurized, and down stroke controls low-pressure end a to be pressurized by reset valve 2 and back-up valve 4, two digital pressures
Difference between tester is detected as the differential pressure of differential pressure transmitter under high static pressure.Experimental data is preserved by serial communication
Later data processing is carried out in computer software.
Differential pressure measuring system software uses Microsoft Visual Basic 6.0 to be used as developing instrument, mainly by parameter
Three setting system, detection monitoring system, testing result output system parts form, wherein detection monitoring system is whole software
Core.Software uses the laptop of Windows operating system（Or tablet computer）As operation platform.Peripheral hardware makes
By the use of intelligent digital pressure testers as Main Regulator, it is integrated with to reference pressure value, electric current（Voltage）The collection of value, while can
The power supply of 24V DC power supplies is provided for differential pressure transmitter.Exported in view of intelligent digital pressure testers using RS232 serial ports
Data, in order to improve the connection compatibility with PC, the USB interface for being configured with RS232-USB adapters and computer connects.This is soft
The bootable user of part completes detection process, carries out data record, error calculation, the data revision of the convention automatically and generates detection record sheet
Lattice, detection data can be stored, are loaded into and printed, and eliminate manual record and numerous and diverse evaluation work, detection efficiency carries significantly
The introducing of human error is reduced while high.
Industry differential pressure control device detection device provided by the utility model is mainly used in normal pressure and static pressure state
Under industrial differential pressure control device is detected, the device by pressure console, customization high accuracy digital pressure testers
Formed with supporting software etc..The pre- press pump of automatic gas built in pressure console, it produces pressure and is stored in two built-in gas
Rong Zhong, eliminates the reliance on heavy gas cylinder as external pressure gas source, small, light-weight, improves detection device just
The property taken；Main Regulator can simultaneously be determined on request using the high accuracy digital pressure testers customized, its measurement range (0~4) MPa
System, 0.02 grade of class of accuracy, error in reading ± 0.02%, and the acquisition function with electric current and magnitude of voltage, it is poor to meet industry
Requirement in pressure control apparatus detection to accuracy；System support software is write using Microsoft Visual Basic, people
Machine dialog interface is simple, operating process clear logic, and bootable user completes detection process.
Claims (6)
1. a kind of industry differential pressure control device detection device, it is characterized in that, including pressure console, in the pressure console
It is provided with the first gas appearance, the second gas holds and the pre- press pump of automatic gas；The pre- press pump of automatic gas passes through back-up valve and described the
One gas holds and connects, and first gas holds is connected with two branches again, wherein being disposed with low pressure valve, the first school on a branch
Instrument and relief valve are tested, balanced valve, the second tester and second gas are disposed with another branch and is held；First school
Test instrument, second tester, the back-up valve, the balanced valve, the low pressure valve and the relief valve be arranged at it is described
On pressure console；Meanwhile reset valve is additionally provided with the pressure console, in the reset valve and pressure console
First gas holds and connects；First tester connects by the relief valve with the low-pressure end of industrial differential pressure control device,
First tester is used for the pressure value for detecting industrial differential pressure control device low-pressure end；Second tester is by described the
Two gas hold to connect with the high-pressure side of industrial differential pressure control device, and second tester is used to detect industrial differential pressure control device height
The pressure value of pressure side.
2. industry differential pressure control device detection device according to claim 1, it is characterized in that, the industry differential pressure control is set
Standby is differential pressure transmitter, differential pressure controller, differential pressure levelmeter, difference gauge or differential pressure gauge.
3. industry differential pressure control device detection device according to claim 1, it is characterized in that, first tester and institute
It is digital pressure testers to state the second tester.
4. industry differential pressure control device detection device according to claim 1, it is characterized in that, in first tester and
Built-in power is equipped with second tester, the built-in power is to first tester and second tester
While power supply, the industrial differential pressure control device power supply is returned.
5. industry differential pressure control device detection device according to claim 1, it is characterized in that, first tester and institute
State the second tester with computer to connect, first tester and second tester survey data and be transmitted to calculating
Machine, meanwhile, industrial differential pressure control device surveys differential pressure data and is also transmitted to computer, and data processing is carried out by computer, so that
Realize the calibrating to industrial differential pressure control device.
6. industry differential pressure control device detection device according to claim 1, it is characterized in that, first tester and institute
The pressure measurement range for stating the second tester is 0 ~ 4MPa or is customized as requested that class of accuracy is 0.02 grade, reading
Error is ± 0.02%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721214990.4U CN207301826U (en) | 2017-09-21 | 2017-09-21 | Industrial differential pressure control device detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721214990.4U CN207301826U (en) | 2017-09-21 | 2017-09-21 | Industrial differential pressure control device detection device |
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| CN207301826U true CN207301826U (en) | 2018-05-01 |
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ID=62442076
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076863A (en) * | 2020-03-04 | 2020-04-28 | 东营职业学院 | Intelligent differential pressure transmitter calibration system |
| CN112486138A (en) * | 2020-10-30 | 2021-03-12 | 浙江王奇检测技术有限公司 | Detection method for industrial differential pressure control equipment |
| CN113340527A (en) * | 2021-05-31 | 2021-09-03 | 新疆维吾尔自治区计量测试研究院 | Differential pressure transmitter verification system |
| CN113432781A (en) * | 2021-04-24 | 2021-09-24 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113532734A (en) * | 2021-04-24 | 2021-10-22 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
-
2017
- 2017-09-21 CN CN201721214990.4U patent/CN207301826U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076863A (en) * | 2020-03-04 | 2020-04-28 | 东营职业学院 | Intelligent differential pressure transmitter calibration system |
| CN112486138A (en) * | 2020-10-30 | 2021-03-12 | 浙江王奇检测技术有限公司 | Detection method for industrial differential pressure control equipment |
| CN113432781A (en) * | 2021-04-24 | 2021-09-24 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113532734A (en) * | 2021-04-24 | 2021-10-22 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113532734B (en) * | 2021-04-24 | 2022-05-20 | 中国测试技术研究院流量研究所 | Static pressure characteristic test and effective area verification method for piston pressure gauge of differential pressure transmitter |
| CN113432781B (en) * | 2021-04-24 | 2023-03-10 | 中国测试技术研究院流量研究所 | Method for measuring static pressure characteristic of differential pressure transmitter and transmitting quantity value in verification process of piston type pressure gauge |
| CN113340527A (en) * | 2021-05-31 | 2021-09-03 | 新疆维吾尔自治区计量测试研究院 | Differential pressure transmitter verification system |
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