CN209542028U - A kind of PE ball valve Micro blazed-grating rapid detection system - Google Patents
A kind of PE ball valve Micro blazed-grating rapid detection system Download PDFInfo
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- CN209542028U CN209542028U CN201822234019.9U CN201822234019U CN209542028U CN 209542028 U CN209542028 U CN 209542028U CN 201822234019 U CN201822234019 U CN 201822234019U CN 209542028 U CN209542028 U CN 209542028U
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Abstract
The utility model discloses a kind of PE ball valve Micro blazed-grating rapid detection systems comprising signal detection and sending module, wireless signal transceiver module, host computer；Signal detection and sending module include absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller one, wireless sending module, battery circuit module, microcontroller one receives the absolute pressure data of absolute pressure and temperature-measuring module detection, wireless signal transceiver module is transferred to by wireless sending module after the relative barometric pressure difference data of relative barometric pressure measuring mechanism detection, after reception of wireless signals module receives, it is transmitted to microcontroller two, microcontroller two receives the absolute pressure data transmitted by reception of wireless signals module, it is exported by data upload interface to host computer after temperature data and relative barometric pressure difference data.The detection system can also detect the minor change of air pressure, have the advantages that detection time is short, accuracy is high, at low cost while detecting absolute pressure inside ball valve.
Description
Technical field
The utility model belongs to ball valve air-leakage test technical field, especially a kind of quick detection system of PE ball valve Micro blazed-grating
System.
Background technique
Currently, when industrial polyethylene (PE) ball valve be applied to flammable and explosive fluid transfer conduit when, PE ball valve it is close
Sealing property need to meet stringent technical requirements standard.Due to the special molding of PE ball valve element and assembly technology, internal knot
Component density is uneven, structural member between each other with the presence of minim gap the phenomenon that have certain generality.It is high in transfer conduit
Pressure gas medium then may slowly be overflowed from these gaps, so as to cause ball valve Micro blazed-grating phenomenon occur.
In PE valve gate technology standard, sealing performance mainly passes through high pressure and the method for testing low pressure increase is examined
It tests, and qualitatively judges conclusion in artificial observation method.But larger in view of PE ball valve volume, minor leakage is difficult to observe.It is logical
It crosses monitoring ball valve internal pressure and changes the presence that can effectively differentiate Micro blazed-grating, but the individually pressure sensor of wide range,
Due to the limitation of its resolving power, accurate judgement can be provided by needing to accumulate for a long time.So needing to develop new detection system
It unites to improve the accuracy and speed of PE ball valve Micro blazed-grating detection.
Utility model content
A kind of PE ball valve Micro blazed-grating rapid detection system that in order to overcome the deficiencies of the prior art, the utility model provides,
The detection system can also detect the minor change of air pressure while detecting absolute pressure inside ball valve.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of PE ball valve Micro blazed-grating quickly detects
System, it is characterised in that: including signal detection and sending module, wireless signal transceiver module, host computer, signal detection and transmission
Module is communicated with wireless signal transceiver module by wireless signal, wireless signal transceiver module and host computer by wired or
Person's wireless mode communicates；
Signal detection and sending module include absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller
Device one, wireless sending module, battery circuit module,
Absolute pressure and temperature-measuring module, for detecting the absolute pressure data and temperature of seal-off pressure chamber in PE ball valve
Data, and it is sent to microcontroller one,
Relative barometric pressure measuring mechanism seals ginseng in seal-off pressure chamber and relative barometric pressure measuring mechanism for detecting in PE ball valve
The relative pressure difference data between chamber is examined, and is sent to microcontroller one,
Microcontroller one, for receiving absolute pressure data, the relative barometric pressure of absolute pressure and temperature-measuring module detection
The relative barometric pressure difference data of measuring mechanism detection, and absolute pressure data, temperature data and relative barometric pressure difference data are passed through into nothing
Line sending module is transferred to wireless signal transceiver module,
Wireless sending module, for being communicatively coupled with wireless signal transceiver module,
Battery circuit module, for absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller
One, wireless sending module is powered；
Wireless signal transceiver module includes reception of wireless signals module, data upload interface, microcontroller two,
Reception of wireless signals module, for receive by wireless sending module transmission absolute pressure data, temperature data and
Relative barometric pressure difference data, and it is transmitted to microcontroller two,
Microcontroller two, for receiving absolute pressure data, temperature data and the phase transmitted by reception of wireless signals module
It exports to air pressure difference data and by data upload interface to host computer.
Further, the relative barometric pressure measuring mechanism includes relative barometric pressure sensor and its detection circuit, micro valve
And its driving mechanism, sealing reference cavity,
Micro valve and its driving mechanism, between the seal-off pressure chamber and sealing reference cavity of on or off PE ball valve
Air circuit connection,
Relative barometric pressure sensor passes through the seal-off pressure of benchmark interface and test interface respectively with sealing reference cavity, PE ball valve
Chamber connection.
Further, the absolute pressure and temperature-measuring module include pressure-temperature sensor chip, and pressure and temp passes
Sensor chip uses SP370 chip.
Further, the relative barometric pressure sensor and its detection circuit include relative barometric pressure sensor, and relative barometric pressure passes
Sensor uses MP3V5050GP sensor.
Further, the microcontroller one uses STM32L051K8T6 chip.
Further, the microcontroller two uses STM32F103C8T6 chip.
Further, the wireless sending module uses chip CC1101, and tranmitting frequency is set as 433MH.
Further, the battery circuit module includes lithium battery, voltage conversion circuit and battery charger, lithium battery
Voltage be 3.7~4.2V, voltage conversion circuit by lithium battery voltage reduce and pressure stabilizing in 3.3V.
Another purpose of utility model: the utility model additionally provides a kind of PE ball valve Micro blazed-grating rapid detection method, special
Sign is, comprising the following steps: 1. signal detection and sending module are placed in inside tested PE ball valve, are made PE ball valve both ends are closed
PE ball valve body inner cavity forms seal-off pressure chamber, relative barometric pressure testing agency is 2. installed, in relative barometric pressure testing agency
Relative barometric pressure sensor is connect with the seal-off pressure chamber of sealing reference cavity and PE ball valve respectively by two interfaces, is opened opposite
Micro valve in air pressure testing agency refers to the seal-off pressure chamber of PE ball valve and the sealing in relative barometric pressure testing agency
3. chamber conducting is filled with compressed air to specified atmospheric pressure value into the seal-off pressure chamber of PE ball valve, specified atmospheric pressure value is higher than atmospheric pressure,
And atmospheric pressure value P0 is read by signal detection and sending module or atmospheric pressure value P0, signal detection and transmission mould are read by external pressure meter
The atmospheric pressure value P0 of reading is sent to wireless signal transceiver module and uploads to host computer by block, then, stops pressurizeing and disconnecting adding
The connection of pressure gas channel and PE ball valve, 4. after a period of stabilisation, by signal detection and sending module detection seal-off pressure chamber
Absolute pressure value P1, meanwhile, the atmospheric pressure value P1 of reading is sent to wireless signal transceiver module simultaneously by signal detection and sending module
Host computer is uploaded to, then, is compared according to the pressure size of P1 and P0, judges whether tested PE ball valve has leak case, if P1
At or about P0, continues the detection of relative barometric pressure difference, 5. close the micro valve in relative barometric pressure testing agency so that PE
The seal-off pressure chamber of ball valve and the sealing reference cavity in relative barometric pressure testing agency close connection structure, and sealing reference cavity remains solid
Fixed air pressure is constant, detects seal-off pressure chamber and sealing reference cavity by the relative barometric pressure sensor in relative barometric pressure testing agency
Between relative pressure difference △ P situation of change, meanwhile, signal detection and sending module send the relative pressure difference △ P of reading
To wireless signal transceiver module and host computer is uploaded to, then, detected PE is calculated according to relative pressure difference △ P variable gradient
Ball valve Micro blazed-grating situation.
Further, the step 3. in, into PE ball valve inflationtime be not more than 60 seconds, step 4. in, stablize the time
Be 30~60 seconds, step 5. in relative barometric pressure detection time be no more than 3 minutes.
Using the above scheme, the utility model overcomes the deficiency that conventional detection apparatus differentiates minor leakage in detection, solution
The too long problem of simple pneumatic process time of measuring of having determined, and detected simultaneously using absolute pressure and relative barometric pressure difference, improve inspection
Precision is surveyed, the quick detection to PE ball valve minor leakage is realized and is quickly determined；Absolute pressure inspection is carried out to PE ball valve first
It surveys, if the absolute pressure of detection has biggish air pressure decline, (judgement is known according to the profession that those skilled in the art have
Knowledge can be completed), then directly determine the leakage of PE ball valve, stops the detection of relative barometric pressure difference；If can not judge PE ball valve is
It is no to have leakage, then continue the detection of relative barometric pressure difference, it is micro- that tested ball valve is calculated according to the variable gradient of relative barometric pressure difference
Leakage scenarios, in the detection process, inflationtime are determined by the specification and gas source aerated flow quick decision for being tested PE ball valve, generally 60
Within second, inflation terminates, and stablizes basis of time and is tested PE ball valve specification, generally may be set in 30 seconds ~ 60 seconds, absolute pressure is real
When detect, and the detection of relative barometric pressure difference according to be tested PE ball valve specification, leakage judgement can be generally carried out within 3 points, therefore,
The entire testing time is controlled substantially at 5 minutes or so.The utility model detection system and method air pressure resolving power achieved are remote
It, can be largely using Tthe utility model system and method higher than the air pressure resolving power using single absolute pressure measurement method
Ground, which shortens, determines the time, improves detection efficiency, reduces time cost.In addition, since detection time largely shortens, it can also
To reduce influence of the temperature change to air pressure, the accuracy of judgement is improved.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Attached drawing 1 is the utility model specific embodiment system block diagram；
Attached drawing 2 is the circuit diagram of the utility model specific embodiment absolute pressure and temperature-measuring module；
Attached drawing 3-1 is relative barometric pressure detection circuit figure；Attached drawing 3-2 is the structural schematic diagram of relative barometric pressure measuring mechanism；
Attached drawing 4 is the utility model specific embodiment wireless transmission circuit/wireless receiving circuit structural schematic diagram；
Attached drawing 5-1 is voltage conversion circuit；Attached drawing 5-2 is battery charger；
Attached drawing 6-1 is RS232 module；Attached drawing 6-2 is WIFI module.
Specific embodiment
Specific embodiment of the utility model is PE ball valve Micro blazed-grating rapid detection system as shown in Figure 1 comprising signal
Detection and sending module, wireless signal transceiver module, host computer, signal detection and sending module and wireless signal transceiver module are logical
It crosses 433MHz wireless signal to be communicated, wireless signal transceiver module and host computer are led to by RS232 WIFI mode
Letter, as shown in Fig. 6-1, Fig. 6-2；Host computer can be computer, and when communication mode is WIFI, host computer is also possible to intelligence
Mobile phone.
Signal detection and sending module include absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller
Device one, wireless sending module, battery circuit module.
Battery circuit module to above-mentioned absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller one,
Wireless sending module power supply.Battery circuit module includes lithium battery, voltage conversion circuit (such as Fig. 5-1) and battery charger
(such as Fig. 5-2), the voltage of lithium battery are 3.7~4.2V, and voltage conversion circuit reduces lithium battery voltage and pressure stabilizing is in 3.3V.
Absolute pressure and temperature-measuring module, as shown in Fig. 2, its absolute gas for being used to detect seal-off pressure chamber in PE ball valve
Data and temperature data are pressed, and is sent to microcontroller one, which can be selected low power consumption control device
STM32L051K8T chip.Absolute pressure and temperature-measuring module include pressure-temperature sensor chip, pressure-temperature sensor
Chip uses SP370 chip.The function of SP370 integrated chip absolute pressure and temperature measurement, has extremely low power dissipation and Gao Ke
By property the advantages that.
Relative barometric pressure measuring mechanism is used to detect seal-off pressure chamber and phase in PE ball valve as shown in Fig. 3-1 and Fig. 3-2
To the relative pressure difference data sealed between reference cavity in barometric surveying mechanism, and it is sent to microcontroller one.
Absolute pressure data, the relative barometric pressure that microcontroller one detects the absolute pressure received and temperature-measuring module
The relative barometric pressure difference data of measuring mechanism detection, is transferred to wireless signal transceiver module by wireless sending module, transmits wirelessly
Module (Fig. 4) uses chip CC1101, and tranmitting frequency is set as 433MHz, low in energy consumption with high sensitivity, and performance is stablized
The advantages that.
Wireless sending module is communicated with the reception of wireless signals module in wireless signal transceiver module, is received by wireless
Absolute pressure data, temperature data and the relative barometric pressure difference data of sending module transmission, and it is transmitted to microcontroller two；Microcontroller
Device two can use the STM32F103C8T6 chip of low-power consumption.And the reception of wireless signals module and signal detection and transmission mould
The circuit diagram of wireless sending module in block is consistent.Wireless signal transceiver module can receive certain area in multiple signal detections and
The data of sending module constitute star-like connection, realize monitoring function while to multiple PE valve Micro blazed-gratings.
Microcontroller two uploads the absolute pressure data received, temperature data and relative barometric pressure difference data by data
Interface is exported to host computer.It is the optional various ways of data upload interface, wired such as RS232(Fig. 6-1), it is wireless such as WIFI
(Fig. 6-2) etc..
Further, relative barometric pressure measuring mechanism include relative barometric pressure sensor and its detection circuit, micro valve and its
Driving mechanism, sealing reference cavity, as shown in Fig. 3-1,3-2,
Relative barometric pressure sensor and its detection circuit include relative barometric pressure sensor, and relative barometric pressure sensor uses
MP3V5050GP sensor.
Micro valve and its driving mechanism, between the seal-off pressure chamber and sealing reference cavity of on or off PE ball valve
Air circuit connection.Relative barometric pressure sensor by benchmark interface and test interface respectively with sealing reference cavity, PE ball valve it is closed
Pressure chamber connection.
Relative barometric pressure measuring mechanism can have 2 kinds of states by micro valve and its driving mechanism: standby shape is connected in gas circuit
State, gas circuit disconnect measuring state.When standby mode is connected in gas circuit, micro valve conducting, relative barometric pressure sensor is read at this time
Relative barometric pressure data are zero；When gas circuit disconnects measuring state, micro valve is disconnected, and relative barometric pressure sensor reads tested PE at this time
The difference of ball valve air pressure inside and sealing reference cavity air pressure inside.Sealing reference cavity air pressure inside remains unchanged, when tested PE ball valve
When in the presence of leakage, the draught head that relative barometric pressure sensor is read will be become larger.
Specific step is as follows for PE ball valve Micro blazed-grating rapid detection method: 1. signal detection and sending module are placed in tested PE
It is inside ball valve, PE ball valve both ends are closed so that PE ball valve body inner cavity formation seal-off pressure chamber, 2. installs relative barometric pressure inspection
Survey mechanism, the relative barometric pressure sensor in relative barometric pressure testing agency by two interfaces respectively with sealing reference cavity and PE ball
The seal-off pressure chamber of valve connects, and opens seal-off pressure chamber and phase that the micro valve in relative barometric pressure testing agency makes PE ball valve
To the sealing reference cavity conducting in air pressure testing agency, compressed air is 3. filled with into the seal-off pressure chamber of PE ball valve to specified gas
Pressure value specifies atmospheric pressure value to be higher than atmospheric pressure, and is read atmospheric pressure value P0 by signal detection and sending module or read by external pressure meter
It takes atmospheric pressure value P0, signal detection and sending module that the atmospheric pressure value P0 of reading is sent to wireless signal transceiver module and uploads to
Then position machine stops the connection for pressurizeing and disconnecting pressurization gas circuit and PE ball valve, into PE ball valve, inflationtime is not more than 60 seconds,
4. after stablizing 30~60 seconds, by the absolute pressure value P1 in signal detection and sending module detection seal-off pressure chamber, meanwhile, signal
The atmospheric pressure value P1 of reading is sent to wireless signal transceiver module and uploads to host computer by detection and sending module, then, according to
The pressure size of P1 and P0 compares, and judges whether tested PE ball valve has leak case, if P1 is at or about P0, continues opposite
5. draught head detection closes the micro valve in relative barometric pressure testing agency so that the seal-off pressure chamber of PE ball valve and opposite gas
The sealing reference cavity in testing agency is pressed to close connection structure, the air pressure that sealing reference cavity remains fixed is constant, by relative barometric pressure
The relative pressure difference △ P that relative barometric pressure sensor in testing agency detects seal-off pressure chamber and seals between reference cavity changes
Situation, which is no more than 3 minutes, and while detection, signal detection and sending module are by the relative pressure difference △ P of reading
It is sent to wireless signal transceiver module and uploads to host computer, then, calculated according to relative pressure difference △ P variable gradient tested
Survey PE ball valve Micro blazed-grating situation.
The method that the utility model is leaked hunting in real time using slight pressure variation, the situation of assessment valve products Micro blazed-grating, one
Aspect solves single absolute pressure measurement, accumulates the excessively high problem of method bring time cost determined for a long time, on the other hand,
This method has the characteristics that low-cost and easy-to realization, can be largely used to enterprises production locale, be conducive to enterprise and improve product quality
Control system.
The utility model is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to the utility model public affairs
The content opened can be implemented the utility model or all using the utility model using other a variety of specific embodiments
Design structure and thinking, do simple change or change, both fall within the protection scope of the utility model.
Claims (8)
1. a kind of PE ball valve Micro blazed-grating rapid detection system, it is characterised in that: including signal detection and sending module, wireless signal
Transceiver module, host computer, signal detection and sending module are communicated with wireless signal transceiver module by wireless signal, wirelessly
Signal transmitting and receiving module is communicated with host computer by wired or wireless mode；
Signal detection and sending module include absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller one,
Wireless sending module, battery circuit module,
Absolute pressure and temperature-measuring module, for detecting the absolute pressure data and temperature number of seal-off pressure chamber in PE ball valve
According to, and it is sent to microcontroller one,
Relative barometric pressure measuring mechanism seals reference cavity in seal-off pressure chamber and relative barometric pressure measuring mechanism for detecting in PE ball valve
Between relative pressure difference data, and be sent to microcontroller one,
Microcontroller one, for receiving absolute pressure data, the relative barometric pressure measurement of absolute pressure and temperature-measuring module detection
The relative barometric pressure difference data of mechanism detection, and by absolute pressure data, temperature data and relative barometric pressure difference data by wirelessly sending out
Send module transfer to wireless signal transceiver module,
Wireless sending module, for being communicatively coupled with wireless signal transceiver module,
Battery circuit module, for absolute pressure and temperature-measuring module, relative barometric pressure measuring mechanism, microcontroller one, nothing
The power supply of line sending module；
Wireless signal transceiver module includes reception of wireless signals module, data upload interface, microcontroller two,
Reception of wireless signals module, for receiving by the absolute pressure data of wireless sending module transmission, temperature data and opposite
Air pressure difference data, and it is transmitted to microcontroller two,
Microcontroller two, for receiving by the absolute pressure data of reception of wireless signals module transmission, temperature data and opposite gas
Pressure difference data is simultaneously exported by data upload interface to host computer.
2. PE ball valve Micro blazed-grating rapid detection system according to claim 1, it is characterised in that: the relative barometric pressure measurement
Mechanism includes relative barometric pressure sensor and its detection circuit, micro valve and its driving mechanism, seals reference cavity,
Micro valve and its driving mechanism, for the gas between the seal-off pressure chamber and sealing reference cavity of on or off PE ball valve
Road connection,
Seal-off pressure chamber of the relative barometric pressure sensor by benchmark interface and test interface respectively with sealing reference cavity, PE ball valve connects
It connects.
3. PE ball valve Micro blazed-grating rapid detection system according to claim 1 or 2, it is characterised in that: the absolute pressure
And temperature-measuring module includes pressure-temperature sensor chip, pressure-temperature sensor chip uses SP370 chip.
4. PE ball valve Micro blazed-grating rapid detection system according to claim 2, it is characterised in that: the relative barometric pressure sensing
Device and its detection circuit include relative barometric pressure sensor, and relative barometric pressure sensor uses MP3V5050GP sensor.
5. PE ball valve Micro blazed-grating rapid detection system according to claim 1 or 2, it is characterised in that: the microcontroller
One uses STM32L051K8T6 chip.
6. PE ball valve Micro blazed-grating rapid detection system according to claim 1 or 2, it is characterised in that: the microcontroller
Two use STM32F103C8T6 chip.
7. PE ball valve Micro blazed-grating rapid detection system according to claim 1 or 2, it is characterised in that: the wireless transmission
Module uses chip CC1101, and tranmitting frequency is set as 433MH.
8. PE ball valve Micro blazed-grating rapid detection system according to claim 1 or 2, it is characterised in that: the battery circuit
Module includes lithium battery, voltage conversion circuit and battery charger, and the voltage of lithium battery is 3.7~4.2V, voltage conversion electricity
Road reduces lithium battery voltage and pressure stabilizing is in 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822234019.9U CN209542028U (en) | 2018-12-28 | 2018-12-28 | A kind of PE ball valve Micro blazed-grating rapid detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822234019.9U CN209542028U (en) | 2018-12-28 | 2018-12-28 | A kind of PE ball valve Micro blazed-grating rapid detection system |
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| CN209542028U true CN209542028U (en) | 2019-10-25 |
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ID=68267443
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506855A (en) * | 2018-12-28 | 2019-03-22 | 中国计量大学 | A kind of PE ball valve Micro blazed-grating rapid detection system and method |
| CN114324046A (en) * | 2020-09-30 | 2022-04-12 | 北京振兴计量测试研究所 | Low-pressure box calibrating device |
-
2018
- 2018-12-28 CN CN201822234019.9U patent/CN209542028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506855A (en) * | 2018-12-28 | 2019-03-22 | 中国计量大学 | A kind of PE ball valve Micro blazed-grating rapid detection system and method |
| CN114324046A (en) * | 2020-09-30 | 2022-04-12 | 北京振兴计量测试研究所 | Low-pressure box calibrating device |
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