CN109540401A - A kind of pipe fitting leakage detection method with flow-limiting valve - Google Patents
A kind of pipe fitting leakage detection method with flow-limiting valve Download PDFInfo
- Publication number
- CN109540401A CN109540401A CN201811580814.1A CN201811580814A CN109540401A CN 109540401 A CN109540401 A CN 109540401A CN 201811580814 A CN201811580814 A CN 201811580814A CN 109540401 A CN109540401 A CN 109540401A
- Authority
- CN
- China
- Prior art keywords
- leakage
- flow
- workpiece
- limiting valve
- tooling
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/083—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for tubes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
Present invention discloses a kind of pipe fitting leakage detection method with flow-limiting valve, it includes providing a workpiece connecting device, several concatenated quick couplings are provided in workpiece connecting device, workpiece connecting device and leakage instrument are formed into a loop, and pressure gauge is set on circuit, every two quick coupling connects a workpiece, flowmeter is set positioned at the downstream of each workpiece on the circuit, it pressurizes to the circuit, then pressure maintaining within the set time, it is vented again, determines whether the flow-limiting valve in workpiece more dresses, few dress or anti-dress occurs by the numerical value of flowmeter and pressure gauge；If not having, then workpiece connecting device is sunk to together with workpiece and carries out leak-testing in a water tank, if leakage instrument detection has leakage, workpiece connecting device is maintained in the water tank, and observer's observation level is waited to come finally to confirm leakage phenomenon with the presence or absence of blistering.The present invention can effectively, accurately detect the leakage situation of automobile pipe fuel pipe and the behavior pattern of fuel pipe upper flow valve.
Description
[technical field]
The invention belongs to automobile pipeline manufacturing technology fields, more particularly to a kind of pipe fitting leak detection with flow-limiting valve
Method.
[background technique]
Metal oil conduit and brake pipe are indispensable components in automobile driving system, and main material is single layer, bilayer
Low carbon steel pipe, stainless steel tube etc., the fuel oil and brake system being widely used on automobile chassis.In automobile brake
In system, often to use and arrive low carbon steel pipe or metal wire net flexible hose, sealing fastener is cooperated to convey brake liquid, and
The pipeline of this section of conveying brake fluid requires to be very high to leakage；In addition pipeline is typically located on automobile chassis, length compared with
It is long, and the length of different automobile types is also different, this just has higher requirement to the multi items flexible production of leak test device；Again
When person's high-pressure leakage is tested, if the pipeline tested leaks, that will cause safety accident very serious, therefore right
The safety requirements of equipment is also very high.
Braided Teflon hose has the connection of metal fast joint at both ends end to end, then there is metal iron hoop again
It withholds, is leakage test to ensure to leak, after these processes, leakage test step needs precision higher, existing air
Leakage test is not able to satisfy；Generally built-in a flow-limiting valve, flow-limiting valve can be installed inside braided Teflon hose fuel pipe
If neglected loading, anti-dress or more dresses will cause fuel pipe disabler；Existing detection device can not but detect the shape of flow-limiting valve
State.
Therefore, it is necessary to provide the new pipe fitting leakage detection method with flow-limiting valve of one kind to solve the above problems.
[summary of the invention]
The main purpose of the present invention is to provide a kind of pipe fitting leakage detection method with flow-limiting valve, can it is effective,
Accurately detect the leakage situation of automobile pipe fuel pipe and the behavior pattern of fuel pipe upper flow valve.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of pipe fitting leakage detection method with flow-limiting valve,
It is the following steps are included: provide a tooling gas circuit Quick Connect Kit, if being provided in the tooling gas circuit Quick Connect Kit
Concatenated quick coupling is done, the tooling gas circuit Quick Connect Kit and a leakage instrument are formed into a loop, and is set on the circuit
A pressure gauge is set, every two quick coupling connects a workpiece to be detected, and the downstream setting one of each workpiece is located on the circuit
Flowmeter carries out pneumatic compression to the circuit from the leakage instrument end, then pressure maintaining within the set time, then is let out by described
Body is exhausted in leakage instrument, and it is more to determine whether the flow-limiting valve in workpiece occurs by the numerical value of the flowmeter and the pressure gauge
Dress, few dress or anti-dress；If no, the tooling gas circuit Quick Connect Kit is sunk to and carries out leak-testing in a water tank,
If the leakage instrument detection has leakage, the tooling gas circuit Quick Connect Kit is maintained in the water tank, waits observer
Observation level is come finally to confirm leakage phenomenon with the presence or absence of blistering.
Further, the tooling gas circuit Quick Connect Kit is arranged on a tooling fixed frame, and the tooling is fixed
Frame is located at the top of the water tank.
Further, the tooling fixed frame is driven in and out the water tank by a lifting actuator.
Further, the leakage instrument is connected to a booster pump pipeline.
Further, the bottom surrounding of the tooling fixed frame is provided with the stable steering contacted with the tank inner wall
Idler wheel.
Compared with prior art, the beneficial effect of pipe fitting leakage detection method of the present invention with flow-limiting valve is: using
Underwater leakage test, can read leakage value using leakage instrument simultaneously, can also determine to be by observation water surface bubble
No leakage, it is more accurate true；Pipe is passed through by air-flow in the waiting stage of leakage test endpiece using digital air gauge
The pressure drop of air pressure improve the diversity of detection project to identify whether flow-limiting valve has anti-dress, more dresses and neglected loading, expand
The scope of application has better met detection demand.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is pipeline jointing construction schematic diagram in the embodiment of the present invention；
Digital representation in figure:
100 can test the underwater leakage detection equipment of pipe fitting of flow-limiting valve performance state；101 pipe fittings；
1 rack；2 water tanks；3 lifting actuators；4 tooling fixed frames；5 leakage instruments；6 booster pumps；7 pressure gauges；8 flows
Meter；9 stable steering idler wheels；10 control cabinets；11 alarm devices；12 exhaust outlets；13 tooling gas circuit Quick Connect Kits.
[specific embodiment]
Embodiment:
Fig. 1-Fig. 2 is please referred to, the present embodiment is the underwater leakage detection equipment of pipe fitting that can test flow-limiting valve performance state
100 comprising rack 1, the water tank 2 being arranged in rack 1 and lifting actuator 3 are driven in and out water tank 2 by lifting actuator 3
Tooling fixed frame 4, be arranged in tooling fixed frame 4 tooling gas circuit Quick Connect Kit 13, be arranged in rack 1
Leakage instrument 5, the booster pump 6 being connected to 5 pipeline of leakage instrument, the tooling gas circuit Quick Connect Kit 13 include that several groups series connection is set
The quick coupling set, every two quick coupling connect a detection workpiece, and two quick couplings of most end pass through pipeline
It is formed into a loop with leakage instrument 5, and be provided with pressure gauge 7 in the circuit, the downstream of each detection workpiece is correspondingly arranged on
Flowmeter 8.
The bottom surrounding of tooling fixed frame 4 is provided with the stable steering idler wheel 9 contacted with 1 inner wall of water tank.
The present embodiment further includes the control cabinet 10 and alarm device 11 being arranged in rack 1, control cabinet 10 and flowmeter 8, pressure
Power table 7, alarm device 11 and leakage instrument 5 are electrically connected.
The exhaust outlet 12 for exhausting gas in circuit is provided on leakage instrument 5.
Pressure gauge 7 has no pressure for detecting in the circuit.Leakage instrument 5 can test pipe fitting, and whether there is or not leakage and leakages
Amount.Whether flowmeter 8 there are more dresses for detect the flow-limiting valve being built in pipe fitting, is filled with less and reversed phenomenon.
The present embodiment additionally provides a kind of pipe fitting leakage detection method with flow-limiting valve comprising following steps: firstly,
Multiple workpiece both ends are connected with corresponding every group of quick coupling and are formed into a loop, booster pump 6 is opened and carries out pneumatic compression to circuit, so
System pressure maintaining setting time afterwards is leaked according to the testing result of pressure gauge 7 and flowmeter 8 feedback into control cabinet system
It calculates；Then it is exhausted by the exhaust outlet 12 on leakage instrument 5, passes through the reading of the flowmeter 8 in each workpiece downstream at this time
With the reading of pressure gauge 7, system judges automatically whether flow-limiting valve occurs more filling, being filled with less and reversed phenomenon；If flow-limiting valve detects
Do not pass through, then tooling gas circuit Quick Connect Kit locks, and lifting actuator 3 is failure to actuate, system prompt alarm；If flow-limiting valve detects
Qualification then goes up and down actuator 3 and tooling gas circuit Quick Connect Kit 13 is driven to be sunk in water tank 1 together with workpiece, by letting out
Leakage instrument 5 whether there is leakage to detect workpiece, if system is provided with leakage, tooling gas circuit Quick Connect Kit is in water tank 1
Do not come up, system alarm waits testing staff to come to observe whether the water surface in water tank 1 bubble occurs to confirm leakage, guarantees
Testing result is more accurate true.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.
Claims (5)
1. a kind of pipe fitting leakage detection method with flow-limiting valve, it is characterised in that: it is the following steps are included: provide a tooling gas
Road Quick Connect Kit is provided with several concatenated quick couplings in the tooling gas circuit Quick Connect Kit, by the tooling
Gas circuit Quick Connect Kit and a leakage instrument are formed into a loop, and a pressure gauge is arranged on the circuit, and every two quick coupling connects
A workpiece to be detected is connect, flow meters are arranged in the downstream that each workpiece is located on the circuit, from the leakage instrument end to described
Circuit carries out pneumatic compression, then pressure maintaining within the set time, then body is exhausted by the leakage instrument, passes through the flow
The numerical value of meter and the pressure gauge determines whether the flow-limiting valve in workpiece more dresses, few dress or anti-dress occurs；If no, will be described
Tooling gas circuit Quick Connect Kit, which is sunk to, carries out leak-testing in a water tank, described if leakage instrument detection has leakage
Tooling gas circuit Quick Connect Kit is maintained in the water tank, and observer's observation level is waited finally to confirm with the presence or absence of blistering
Leakage phenomenon.
2. having the pipe fitting leakage detection method of flow-limiting valve as described in claim 1, it is characterised in that: the tooling gas circuit is fast
Fast attachment device is arranged on a tooling fixed frame, and the tooling fixed frame is located at the top of the water tank.
3. having the pipe fitting leakage detection method of flow-limiting valve as described in claim 1, it is characterised in that: the tooling fixed frame
Frame is driven in and out the water tank by a lifting actuator.
4. having the pipe fitting leakage detection method of flow-limiting valve as described in claim 1, it is characterised in that: the leakage instrument and one
The connection of booster pump pipeline.
5. having the pipe fitting leakage detection method of flow-limiting valve as described in claim 1, it is characterised in that: the tooling fixed frame
The bottom surrounding of frame is provided with the stable steering idler wheel contacted with the tank inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580814.1A CN109540401A (en) | 2018-12-24 | 2018-12-24 | A kind of pipe fitting leakage detection method with flow-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580814.1A CN109540401A (en) | 2018-12-24 | 2018-12-24 | A kind of pipe fitting leakage detection method with flow-limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109540401A true CN109540401A (en) | 2019-03-29 |
Family
ID=65856701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811580814.1A Pending CN109540401A (en) | 2018-12-24 | 2018-12-24 | A kind of pipe fitting leakage detection method with flow-limiting valve |
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| Country | Link |
|---|---|
| CN (1) | CN109540401A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201881119U (en) * | 2010-12-06 | 2011-06-29 | 芜湖艾科汽车技术有限公司 | Valve plate assembly error-prevention device of shock-absorber |
| CN205670080U (en) * | 2016-05-18 | 2016-11-02 | 平原滤清器有限公司 | Modular machine oil filter neglected loading draining valve detection device |
| CN209495811U (en) * | 2018-12-24 | 2019-10-15 | 库博标准汽车配件（苏州）有限公司 | A kind of underwater leakage detection equipment of pipe fitting for testing flow-limiting valve performance state |
-
2018
- 2018-12-24 CN CN201811580814.1A patent/CN109540401A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201881119U (en) * | 2010-12-06 | 2011-06-29 | 芜湖艾科汽车技术有限公司 | Valve plate assembly error-prevention device of shock-absorber |
| CN205670080U (en) * | 2016-05-18 | 2016-11-02 | 平原滤清器有限公司 | Modular machine oil filter neglected loading draining valve detection device |
| CN209495811U (en) * | 2018-12-24 | 2019-10-15 | 库博标准汽车配件（苏州）有限公司 | A kind of underwater leakage detection equipment of pipe fitting for testing flow-limiting valve performance state |
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