CN206330712U - Flow-type leak detector - Google Patents
Flow-type leak detector Download PDFInfo
- Publication number
- CN206330712U CN206330712U CN201621280629.7U CN201621280629U CN206330712U CN 206330712 U CN206330712 U CN 206330712U CN 201621280629 U CN201621280629 U CN 201621280629U CN 206330712 U CN206330712 U CN 206330712U
- Authority
- CN
- China
- Prior art keywords
- pressure
- laminar flow
- optional range
- flow pipe
- range laminar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of flow-type leak detector, including airflow pipeline, it is provided with to adjust the electrical pressure regulator for the stream pressure for flowing through airflow pipeline on the airflow pipeline, optional range laminar flow pipe is connected with after electrical pressure regulator, the differential pressure pickup of the pressure differential of the optional range laminar flow tube inlet of a detection and outlet is connected with the optional range laminar flow pipe, the port of export of optional range laminar flow pipe is connected with to detect the pressure sensor of the stream pressure come out from optional range laminar flow pipe；Flow-type leak detector also includes an analysis computing module；Air-flow on airflow pipeline is after electrical pressure regulator is adjusted, into optional range laminar flow pipe, the pressure differential of optional range laminar flow tube inlet and outlet is measured by differential pressure pickup, the stream pressure come out from optional range laminar flow pipe is measured by pressure sensor, then by analyzing the switching threshold of computing module calculating safety valve.The utility model can accurately measure the switching threshold of safety valve class product.
Description
Technical field
The utility model is related to the field of leaking hunting, and relates in particular to a kind of flow-type for safety valve class product and leaks hunting
Instrument.
Background technology
It is well known that gas flow measurement is widely used when assessing air-tightness/discharge characteristic of part, at present
It there are ways to measure flow.But the most unitary function of these flowmeters, is only capable of obtaining current flow value, it is impossible to meet
Some special test requests, for example：The switching threshold of safety valve, safe traffic etc..
Utility model content
Regarding to the issue above, the utility model provides a kind of flow-type leak detector, to solve of the prior art not obtaining
To safety valve switching threshold the problem of.
To achieve these goals, the technical solution of the utility model is as follows：
Flow-type leak detector, it is characterised in that including airflow pipeline, is provided with to adjust and flows through on the airflow pipeline
The electrical pressure regulator of the stream pressure of airflow pipeline, is connected with optional range laminar flow pipe, institute after electrical pressure regulator
The differential pressure pickup for the pressure differential that the optional range laminar flow tube inlet of a detection and outlet are connected with optional range laminar flow pipe is stated, can
The port of export of range laminar flow pipe is selected to be connected with to detect the pressure sensor of the stream pressure come out from optional range laminar flow pipe；
Flow-type leak detector also includes an analysis computing module；
Air-flow on airflow pipeline, into optional range laminar flow pipe, passes through pressure difference after electrical pressure regulator is adjusted
Sensor measures the pressure differential of optional range laminar flow tube inlet and outlet, is measured by pressure sensor from optional range laminar flow pipe
Stream pressure out, then calculate flow value by analyzing computing module.
The beneficial effects of the utility model：
1st, broader test pressure scope is adapted to, can be expired by being equipped with the electrical pressure regulator of different pressures range
Pressure requirements of the foot from -80KPa~1.6MPa；And set automatic any adjustable by program in the range of effective pressure.
2nd, the switching threshold of safety valve class product can be accurately measured.
3rd, gas flow values can be accurately measured.
The characteristics of the utility model, see the detailed description of this case schema and following preferable embodiment and obtain clear
Ground understands.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
The utility model is expanded on further in face in conjunction with specific embodiments.
Referring to Fig. 1, flow-type leak detector, including airflow pipeline are provided with to adjust and flow through gas on the airflow pipeline
The electrical pressure regulator 10 of the stream pressure on flow tube road, is connected with optional range laminar flow pipe after electrical pressure regulator 10
20, the optional range laminar flow tube inlet of a detection and the pressure differential Δ P of outlet pressure difference sensing are connected with optional range laminar flow pipe
Device 30, the port of export of optional range laminar flow pipe is connected with to detect the pressure of the stream pressure come out from optional range laminar flow pipe
Sensor 40；Flow-type leak detector also includes an analysis computing module；
Differential pressure pickup is high-precision differential pressure pickup.When the air-flow on airflow pipeline is adjusted by electrical pressure regulator
When afterwards, into optional range laminar flow pipe, optional amount can be caused because the frictional resistance formation air-flow of tube wall is to the active force of tube wall
Journey laminar flow tube inlet and the pressure differential of outlet, this pressure differential depend on the size of optional range laminar flow pipe and the speed of flow velocity, stream
Speed is faster, and laminar flow pipe is smaller, and pressure differential is bigger.This pressure differential is measured by differential pressure pickup, measured by pressure sensor
The stream pressure come out from optional range laminar flow pipe, then pass through computing formula：
Current flow status can be calculated.
Wherein
Δ P and Qv (flow flows) are proportional to the air flowed through
μ=air viscosity constant=18.5x 10-6Pa.s (atmospheric density is 1.225kg/m3)
Qv=flows
S=sectional areas
L=laminar flow pipe length of pipe
Δ P=Pin-Pout
Pin=laminar flow tube inlet pressure
Pout=laminar flow pipe outlet pressures
Patm=atmospheric pressure
It is of the present utility model to be characterised by that test pressure can adjust, when safety-valve reaches close/open valve pressure, due to valve
The switch of door can cause the change of pressure, and this function detects this change, so as to measure the close/open valve pressure of safety valve, flow
Calculating of the measurement based on above-mentioned formula.So we can measure the pressure and flow now of valve opening/pass valve simultaneously
Size.
The utility model is by the change of electrical pressure regulator control pressure, needed for can detecting generation regulation flow
Pressure value, so as to measure the opening threshold value needed for safety valve class product, similarly, also may detect that the closing threshold value of valve.
Stream pressure is controlled persistently to raise by electrical pressure regulator, when reaching certain pressure value, flow can occur one
Individual mutation can now judge that the valve of product has been opened (relative to the consecutive variations in pressure uphill process) according to this phenomenon.
Conversely, in product valve opening state, pressure is slowly reduced from a constant flow rate, when reaching some pressure value,
One mutation (consecutive variations during being reduced relative to pressure) can occur for flow, now can determine whether that the valve of product has been closed
Close.
Thus, it is possible to measure the opening and closing threshold value of product valve.And can be drawn according to the measured value of now differential pressure pickup
Flow value.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply principle of the present utility model, the utility model also has respectively on the premise of the utility model spirit and scope are not departed from
Changes and improvements are planted, these changes and improvements are both fallen within the range of claimed the utility model.The utility model requirement
Protection domain defined by appending claims and its equivalent.
Claims (1)
1. flow-type leak detector, it is characterised in that including airflow pipeline, it is provided with to adjust on the airflow pipeline and flows through gas
The electrical pressure regulator of the stream pressure on flow tube road, is connected with optional range laminar flow pipe after electrical pressure regulator, described
The differential pressure pickup of the pressure differential of the optional range laminar flow tube inlet of a detection and outlet is connected with optional range laminar flow pipe, it is optional
The port of export of range laminar flow pipe is connected with to detect the pressure sensor of the stream pressure come out from optional range laminar flow pipe；Stream
Amount formula leak detector also includes an analysis computing module；
Air-flow on airflow pipeline, into optional range laminar flow pipe, passes through pressure difference sensing after electrical pressure regulator is adjusted
Device measures the pressure differential of optional range laminar flow tube inlet and outlet, is come out by pressure sensor measurement from optional range laminar flow pipe
Stream pressure, then by analyze computing module calculate flow value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621280629.7U CN206330712U (en) | 2016-11-28 | 2016-11-28 | Flow-type leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621280629.7U CN206330712U (en) | 2016-11-28 | 2016-11-28 | Flow-type leak detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206330712U true CN206330712U (en) | 2017-07-14 |
Family
ID=59288002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621280629.7U Active CN206330712U (en) | 2016-11-28 | 2016-11-28 | Flow-type leak detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206330712U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561757A (en) * | 2018-03-19 | 2018-09-21 | 创尔特热能科技(中山)有限公司 | Parameter setting method of gas leakage detection device |
| CN111894560A (en) * | 2020-08-14 | 2020-11-06 | 中国石油化工股份有限公司 | Leakage detection and plugging method while drilling in drilling process |
-
2016
- 2016-11-28 CN CN201621280629.7U patent/CN206330712U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561757A (en) * | 2018-03-19 | 2018-09-21 | 创尔特热能科技(中山)有限公司 | Parameter setting method of gas leakage detection device |
| CN111894560A (en) * | 2020-08-14 | 2020-11-06 | 中国石油化工股份有限公司 | Leakage detection and plugging method while drilling in drilling process |
| CN111894560B (en) * | 2020-08-14 | 2023-11-14 | 中国石油化工股份有限公司 | Leakage-detection-while-drilling plugging method in drilling process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201476821U (en) | Double-channel pore plate gas flow rate measuring device with bypass bridge path | |
| CN207298000U (en) | Balanced valve | |
| CN203745051U (en) | Two-position one-way reversing valve type pVTt-method gas flow device | |
| WO2005017466A3 (en) | System to measure density, specific gravity, and flow rate of fluids, meter, and related methods | |
| CN206330712U (en) | Flow-type leak detector | |
| CN104776971A (en) | Visualization experiment device for liquid and sand carrying of gas flow | |
| CN104316115A (en) | Method for measuring pipeline flow by use of pipeline pressure drop | |
| CN103837215B (en) | Commutation valve type p.V.T.t method gas flow meter | |
| CN108896120A (en) | Vortex street throttling integral type gas-liquid biphase flowmeter and its application method | |
| CN104165664B (en) | Pitot bar integrated mass flow meter | |
| CN100567890C (en) | The method of measuring complicated type face flow area with supercritical pressure ratio | |
| CN104316117A (en) | Flow measuring device | |
| CN209014432U (en) | A kind of compensation ventilation rate master bar calibrating installation | |
| CN208953029U (en) | Vortex street throttling integral type gas-liquid biphase flowmeter | |
| CN206450380U (en) | Hydraulic valve reveals measuring device | |
| CN204666329U (en) | A kind of air-flow is taken liquid and is taken sand visual experimental apparatus | |
| CN202092840U (en) | Leak detection system of gas flow standard device | |
| CN205991821U (en) | Double ratio method dampness liquid phase content measurement apparatus | |
| CN113494946B (en) | SF based on shunt method 6 Gas recovery device for gas chamber | |
| CN204902900U (en) | High temperature pitot crust flow sensor | |
| CN209014434U (en) | Check device during a kind of single step ventilation rate master bar | |
| CN204346779U (en) | A kind of dust sampler calibrating installation | |
| CN206311154U (en) | A kind of electronic type gas mass flow gauge | |
| CN203688180U (en) | Automatic blowby and leakage measuring apparatus for valve | |
| CN208207002U (en) | VAV box apparatus for measuring air quantity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |