CN109900437A - Valves leakage detection device - Google Patents
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- CN109900437A CN109900437A CN201711294112.2A CN201711294112A CN109900437A CN 109900437 A CN109900437 A CN 109900437A CN 201711294112 A CN201711294112 A CN 201711294112A CN 109900437 A CN109900437 A CN 109900437A
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Abstract
The present invention relates to valves leakage detection fields, disclose a kind of valves leakage detection device, wherein the detection device includes: acoustical signal processing module, for detecting the acoustical signal being equipped on the pipeline of the valve (204)；Regulating part, for adjusting the installation pressure of the acoustical signal processing module；Pressure detecting module, for detecting the installation pressure signal of the acoustical signal processing module；Acquisition module, for acquiring the acoustical signal of the acoustical signal processing module detection and the installation pressure signal of pressure detecting module detection；Signal transmitting module, for sending the acoustical signal and the installation pressure signal that the acquisition module acquires.Technical solution provided by the invention solves the problems, such as the continuous online acquisition of leakage signal in petrochemical industry valve site, and can be improved the signal acquisition stability and validity of valves leakage detection device.
Description
Technical field
The present invention relates to valves leakage detection fields, more particularly to a kind of valves leakage detection device.
Background technique
Valve is the important equipment in petrochemical iy produced, interior to leak at the gate sealing surface for occurring mainly in valve.Valve production
Manufacturer adopts various measures to reduce the interior leakage of valve, such as gate valve generally uses wedge-shaped ram seal, and ball valve is using eccentric
Or the sealing of other friction free sphere structures and metal to metal, plug valve use back taper balanced type valve core structure etc.,
These structures can satisfy the seal request at initial stage, but with the washing away of petrochemical industry material, corrode, process control procedure operation
Increasing, sealing surface will receive different degrees of damage, leads to valves leakage, not only influences technology controlling and process, and cause product unqualified,
It also pollutes the environment, causes fire or explosion, bring serious consequence.
Currently, valves leakage detection depends on off-line checking method.For example, stopping the Safety Inspection Summery-up Conference phase in device
Between, critical valves are disassembled, are sent to professional being sealed property of testing agency detection, mainly foundation JB/T9092-1999,
The standards such as GB/T13927-1992, API598-2004 carry out intensity to various valves and sealing surface sealing performance is examined, so
Body strength and sealing performance test result are judged afterwards.This method does not require nothing more than harshness, and process units is needed to stop,
Valve inspection is dismantled, and detection efficiency is limited, only the hair valve at some critical process positions could receive detection, entire work
The impossible inspection of most valves in skill, the phenomenon that detection in time accordingly, there exist a large amount of valves leakage.
With the development of science and technology, various non-destructive testing technologies are just gradually applied to petrochemical industry, wherein acoustic emission is
It is considered as the important technology direction for solving valves leakage on-line checking.Such as Zhang Haifeng et al. has carried out valves leakage acoustical signal
Experimental study acquires acoustical signal waveform frequency spectrum feature and time domain, frequency parameter feature under valve difference slip, obtains acoustical signal
Corresponding relationship between characteristic parameter and interior leak rate, to improve the reliability and accuracy (Zhang Haifeng gas pipeline of interior leakage identification
The Beijing Institute of Petrochemical Technology valves leakage sound emission multi-parameter test experience research [J] journal, 2013.09:14-17).
The above equipment or technology are in petroleum chemical enterprise's field application, however it remains following insufficient: (1) petroleum chemical enterprise uses
The standard that valve follows is different, causes valve body structure type more, proposes high requirement, example to the installation of acoustic signal sensor
Pressure difference is such as installed, the signal value of acoustic signal sensor output also can be different, cause the stability of valves leakage acoustical signal compared with
Difference；(2) acoustic signal sensor generally passes through couplant and is pasted on valve, however petrochemical industry belongs to high temperature and pressure industry, very
More critical valves are in high-temperature high-pressure craft position, and valve temperature is up to hundreds of degrees Celsius, and traditional couplant mounting method is difficult
To guarantee the reliability of acoustical signal coupling, the time, slightly long couplant heated up loss, was unfavorable for monitoring valves leakage on-line.
(3) petrochemical industry belongs to inflammable and explosive industry, and all monitoring devices are all needed through certification of explosion protection, and the failure of monitoring device cannot draw
It plays plant area or explosion, traditional acoustic signal sensor is separated with Acquisition Circuit, by cable connection, which is difficult to reach
Requirement of explosion proof.
Therefore, a kind of new valves leakage detection device is studied, to the explosion-proof for improving valves leakage detection device, resistance to height
The stability of warm nature, especially raising acoustical signal acquisition is of great significance, and can carry out valves leakage for petrochemical iy produced scene and exist
Line monitoring provides important technical support.
Summary of the invention
The purpose of the invention is to solve one of the above-mentioned problems of the prior art at least to a certain extent, provide
A kind of technical solution for the signal acquisition stability can be improved valves leakage detection device.
To achieve the goals above, the present invention provides a kind of valves leakage detection device, and the detection device includes:
Acoustical signal processing module, for detecting the acoustical signal being equipped on the pipeline of the valve；
Regulating part, for adjusting the installation pressure of the acoustical signal processing module；
Pressure detecting module, for detecting the installation pressure signal of the acoustical signal processing module；
Acquisition module, for acquiring the acoustical signal and pressure detecting module inspection of the acoustical signal processing module detection
The installation pressure signal of survey；
Signal transmitting module, for sending the acoustical signal and the installation pressure signal that the acquisition module acquires.
Preferably, the acquisition module includes:
Acoustical signal Acquisition Circuit, for acquiring the acoustical signal of the acoustical signal processing module detection；
Pressure signal Acquisition Circuit, for acquiring the installation pressure signal of the pressure detecting module detection；
Independent current source, for providing working power for the acoustical signal Acquisition Circuit and the pressure signal Acquisition Circuit.
Preferably, the acoustical signal processing module, the pressure detecting module and the acquisition module are integrated in one
And it is built in guard shield.
Preferably, the guard shield is explosion-resistant enclosure, and the explosion-resistant enclosure is U-shaped.
Preferably, the acoustical signal processing module is acoustic signal sensor, the acoustic signal sensor and the regulating part
Be separately mounted to the open end two sides of the explosion-resistant enclosure of U-shaped and opposite to each other.
Preferably, the pressure detecting module is pressure sensor, the acoustic signal sensor and the pressure sensor
The explosion-resistant enclosure is sequentially coaxially overlayed from the inside to the outside along the direction in the U-shaped opening direction perpendicular to the explosion-resistant enclosure
It is interior.
Preferably, the regulating part includes fastening bolt, and the fastening bolt can be in the U perpendicular to the explosion-resistant enclosure
It is adjusted on the direction of shape opening direction far from or close to the acoustic signal sensor.
Preferably, the adjustable stroke of the fastening bolt 109 is not less than 15cm.
Preferably, the regulating part further includes universal gasket (110), and the universal gasket (110) is mounted on the fastening
One end close to the acoustic signal sensor (101) of bolt (109).
Preferably, the signal transmitting module is wireless antenna (107), and the wireless antenna (107) is built in flame proof and connects
In head (106), the flame proof connector (106) is mounted on the closed end of the explosion-resistant enclosure (108).
Preferably, the pipeline includes the pipeline section that more piece is sequentially communicated, and passes through flanged joint between every two adjacent sections pipeline section,
The valve (204) is installed therein on one section of pipeline section, the axis of the downstream flange (205,207) adjacent with the valve (204)
It is clamped between the acoustic signal sensor (101) and the regulating part to both ends.
Preferably, clamping force suffered by the axial ends portion of the downstream flange (205,207) is between 20N-40N.
Valves leakage detection device provided by the invention detects whether valve occurs interior leakage by acoustical signal processing module,
The installation pressure that acoustical signal processing module is adjusted by regulating part, acoustical signal processing module is detected by pressure detecting module
Installation pressure, can guarantee valves leakage detection device when carrying out valves leakage detection, so that acoustical signal processing module
Installation pressure maintains in preset pressure value, to meet the acquisition condition of acoustical signal continuous-stable, improves valves leakage inspection
Survey the signal acquisition stability of device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of valves leakage detection device provided in an embodiment of the present invention；
Fig. 2 is the scheme of installation of valves leakage detection device provided in an embodiment of the present invention；
Fig. 3 is installation and the work flow diagram of valves leakage detection device provided in an embodiment of the present invention.
Description of symbols
101- acoustic signal sensor 102- pressure sensor
103- signal transmssion line 104- independent current source
105- Acquisition Circuit 106- flame proof connector
107- wireless antenna 108- explosion-resistant enclosure
The universal gasket of 109- fastening bolt 110-
201- upstream flange 202- upstream seal gasket
203- upstream flange 204- valve
205- downstream flange 206- downstream seal gasket
207- downstream flange 208- valves leakage detection device
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " typically refers to
With reference to the upper and lower, left and right of attached drawing meaning." inside and outside " refers to relative to the inside and outside of component profile itself.
- Fig. 2 refering to fig. 1, the embodiment of the present invention provide a kind of valves leakage detection device 208, valves leakage detection dress
Setting 208 includes: acoustical signal processing module, for detecting the acoustical signal being equipped on the pipeline of the valve 204；Regulating part is used
In the installation pressure for adjusting the acoustical signal processing module；Pressure detecting module, for detecting the acoustical signal processing module
Pressure signal is installed；Acquisition module, for acquiring the acoustical signal and the pressure detecting of the acoustical signal processing module detection
The installation pressure signal of module detection；Signal transmitting module, for sending the acoustical signal and the institute of the acquisition module acquisition
State installation pressure signal.
Specifically, valve 204 is mounted on pipeline, for being opened and closed pipeline, control and the stream for adjusting pumped (conveying) medium in pipeline
To, pressure and other parameters；Leakage is referred to when valve 204 is in close state in valve 204, and the conveying of 204 inlet side of valve is situated between
Matter still is able to flow to the outlet side of valve 204；Compared to valve 204 not there is a situation where interior leakage, interior leakage occurs for valve 204
When, the acoustical signal on pipeline where the valve 204 is specially that waveform and characteristic parameter of acoustic signals etc. will change, this
In embodiment, the acoustical signal being equipped on the pipeline of valve 204 is detected by acoustical signal processing module can be convenient for by the sound
Signal judges whether valve 204 occurs interior leakage.
In addition, in the case where ceteris paribus, if the installation pressure of acoustical signal processing module is same, acoustical signal processing mould
The signal value of block output also can be different, this will cause the stability for leaking acoustical signal processing in valve 204 poor, influence valve 204
The accuracy of inner hexagon result；The present embodiment adjusts the installation pressure of acoustical signal processing module by regulating part, passes through pressure
Power detection module detects the installation pressure of acoustic signal sensor 101, can maintain the installation pressure of acoustical signal processing module
In scheduled pressure value, shadow brought by the stability of signal is acquired to acoustical signal processing module to avoid as installation pressure difference
It rings.
Acquisition module is mainly used for the installation of the acoustical signal detected to acoustical signal processing module and the detection of pressure detecting module
Pressure signal is acquired, and to obtain the waveform and characteristic parameter of the acoustical signal, then passes through signal transmitting module for acquisition
Signal waveform and characteristic parameter and installation pressure signal upload to control centre in real time, are previously stored in control centre to be measured
Type, size and the process conditions of valve 204 can be believed according to type, size and the process conditions of valve 204 to be measured in conjunction with sound
The installation pressure value of number detection module sets the parameter and threshold value and log-on data acquisition etc. of acoustical signal acquisition.
In a preferred embodiment, the acquisition module includes Acquisition Circuit 105 and independent current source 104, Acquisition Circuit 105
The closed end of explosion-resistant enclosure 108 is built in independent current source 104.Acquisition Circuit 105 includes: acoustical signal Acquisition Circuit, for adopting
Collect the acoustical signal of the acoustical signal processing module detection；Pressure signal Acquisition Circuit is for acquiring the pressure detecting module detection
Installation pressure signal.Independent current source 104 is used to be the acoustical signal Acquisition Circuit 105 and the pressure signal Acquisition Circuit
105 provide working power.Specifically, the sampling rate of acoustical signal Acquisition Circuit is not less than 2MHz, can timely collection sound letter
The acoustical signal waveform of number detection module detection simultaneously extracts all characteristic parameters in the acoustical signal waveform；Pressure signal Acquisition Circuit
Sampling rate be not less than 128k, AD conversion be not less than 16.
Acquisition module generally also has wireless transmission circuit, which is connected with signal transmitting module signal,
For the signal of acquisition to be sent to signal transmitting module by wireless transmission circuit, then pass through signal transmitting module to outgoing
Send data.Such as the high bandwidths Radio Transmission Technology such as WIFI can be used, wireless data transmission bandwidth are not less than 50Mbps, transmitting away from
From being not less than 100 meters, to guarantee to leak the complete transmission of acoustical signal waveform and characteristic parameter data in valve 204.
In addition, acquisition module there can also be 64G data to store basic module, it to be used for automatic cycle storage implementation data wave
Shape stream calls the initial data stored immediately to upload according to 204 inner hexagon demand of valve by wireless command.
The independent current source 104 for example can be battery pack, be that Acquisition Circuit 105 carries out individually by independent current source 104
Power supply, can be convenient for charging and power supply management.
In a preferred embodiment, in order to reduce the volume of the valves leakage detection device 208, in order to valves leakage
The installation of detection device 208, the acoustical signal processing module, the pressure detecting module and the acquisition module are integrated in one
Body is for example integrated in same PCB circuit board.Further, the acoustical signal processing module being integrated in one, pressure can also be examined
Module and acquisition module is surveyed to be built in guard shield, guard shield for example can moisture-proof, anti-gray, to the member in each module
Device is protected.
Further, in order to improve the explosion-proof performance of the valves leakage detection device 208, the guard shield is explosion-proof outer
Shell 108.In addition, the guard shield is preferably U-shaped for the ease of the installation of valves leakage detection device 208, install in valve
When device for detecting leakage 208, the open end of U-shaped protection shell can be clamped on the flange for being equipped with the pipeline of valve 204.
Specifically, aluminium alloy for example can be used in the explosion-resistant enclosure 108 or stainless steel material is made, when explosion-resistant enclosure 108
When being made of aluminium alloy, the thickness of explosion-resistant enclosure 108 is typically no less than 6mm, when explosion-resistant enclosure 108 uses stainless steel material
When, the thickness of the guard shield is typically no less than 3mm.
In one embodiment, the acoustical signal processing module is acoustic signal sensor 101, acoustic signal sensor 101
It is also referred to as acoustic emission sensor, the acoustic signal sensor 101 and the regulating part are separately mounted to the explosion-resistant enclosure of U-shaped
108 open end two sides and opposite to each other.
Referring to Fig.2, the valves leakage detection device 208 can be installed in the following way, the pipeline include more piece according to
The pipeline section of secondary connection, by flanged joint between every two adjacent sections pipeline section, the valve 204 is installed therein on one section of pipeline section.
As shown in Fig. 2 include three-joint pipe section pipeline, valve 204 is mounted on intermediate pipeline section, and the arrow direction in Fig. 2 is defeated
The flow direction of medium is sent, the valves leakage detection device 208 is mountable in the downstream flange adjacent with the valve 204
205 and 207 axial ends portion.Wherein, the downstream flange refers to pipeline section where valve 204 and adjacent with the pipeline section
Connecting flange between the pipeline section of downstream, i.e. downstream flange include the flange 205 and adjacent downstream pipe on the pipeline section at 204 place of valve
Flange 207 in section；The axial ends portion of downstream flange includes the separate downstream of the flange 205 on the pipeline section at 204 place of valve
The one end of pipeline section where the separate valve 204 of flange 207 on the one end and adjacent downstream pipeline section of pipeline section.Specifically,
Valves leakage detection device 208 can be by being clamped in regulating part and acoustic signal sensor 101 for the axial ends portion of downstream flange
Between realize installation, acoustic signal sensor 101 and one end end face of downstream flange 205 fit, the close sound of regulating part is believed
Number one end end face of sensor 101 fits with one end end face of downstream flange 207, the installation pressure of acoustic signal sensor 101
It can be realized by changing the distance between regulating part and acoustic signal sensor 101.
It should be noted that in order to improve the connection sealing of each pipeline section, between the connecting flange of usual adjacent two pipeline section
It is provided with gasket seal, as illustrated in the drawing upstream seal gasket 202 and downstream seal gasket 206.
In one embodiment, the acoustic signal sensor 101 may be, for example, circle made of high sensitivity piezoelectric ceramic
Cylinder shape, cross-sectional diameter are usually no more than 20mm；Acoustic signal sensor 101 is embedded in explosion-resistant enclosure 108, axis side
To the opening direction perpendicular to U-shaped explosion-resistant enclosure 108, the flush with outer surface of outer end face and explosion-resistant enclosure 108, or slightly stretch
It is outer in order to can fit with the end face of downstream flange 205 to explosion-resistant enclosure 108 out.
The pressure detecting module can be pressure sensor 102, the pressure sensor 102 and the acoustic signal sensor
101 can sequentially coaxially be overlayed from the inside to the outside along the direction in the U-shaped opening direction perpendicular to the explosion-resistant enclosure 108 it is described anti-
In quick-fried shell 108, that is, pressure sensor 102 is placed between acoustic signal sensor 101 and explosion-resistant enclosure 108, is used for real-time monitoring
Pressure suffered by acoustic signal sensor 101.
Specifically, the pressure sensor 102 can be made of piezoelectric ceramics, and cross-sectional diameter is usually no more than acoustical signal
The cross-sectional diameter of sensor 101.Pressure sensor 102 and acoustic signal sensor 101 pass through signal transmssion line 103 and adopt respectively
Collect module to be connected, the signal for will test is real-time transmitted to acquisition module.
In a preferred embodiment, the regulating part includes fastening bolt 109, and the fastening bolt 109 is threadably mounted at
The open end side of the explosion-resistant enclosure 108, axis direction is vertical with the opening direction of the explosion-resistant enclosure 108, passes through people
Work rotational fastener bolt 109 can be adjusted up fastening bolt 109 in the side in the U-shaped opening direction perpendicular to explosion-resistant enclosure 108
Far from or close to acoustic signal sensor 101, thus realize the adjusting to the installation pressure of acoustic signal sensor 101.
In one embodiment, the clamping opening opening of the valves leakage detection device 208 is not less than 20cm, in order to institute
Stating valves leakage detection device 208 can adapt to install in the flange of different size model, and the clamping opening opening refers to be that sound is believed
Minimum spacing number between sensor 101 and fastening bolt 109.In addition, in order to stablize the valves leakage detection device 208
Ground is mounted on the flange, and the clamping opening depth of the valves leakage detection device 208 is not less than 10cm, and clamping opening width is no more than
3cm.Wherein, when the clamping opening depth refers to be that valves leakage detection device 208 is mounted on flange, valves leakage detection device
The maximum height of 208 parts being in contact with end face of flange in the vertical direction, clamping opening width refer to be valves leakage detection dress
When setting 208 and being mounted on flange, the part that valves leakage detection device 208 is in contact with end face of flange is perpendicular to described vertical
The maximum width of the horizontal direction of direction and flange axis direction.In addition, in order to meet all valves 204 of petrochemical iy produced
Installation application, the adjustable stroke of the fastening bolt 109 are typically no less than 15cm.
In a preferred embodiment, the regulating part further includes universal gasket 110, and the universal gasket 110 is mounted on institute
State one end close to the acoustic signal sensor 101 of fastening bolt 109.Referring to Fig.2, pumped (conveying) medium is according to arrow direction from upper
Trip flows through downstream, and valves leakage detection device 208 is mounted on axial ends portion whole composed by downstream flange 205 and 207,
The end face of the separate downstream flange 207 of downstream flange 205 and the outer end face of acoustic signal sensor 101 fit, downstream flange 207
The end face of separate downstream flange 205 fit with universal gasket 110.The universal 110 adjustable valves leakage of one side of gasket
On the other hand the installation direction of detection device 208 can increase the fixed forced area of installation, and adjust fastening bolt 109
When, so that the binding face uniform force of acoustic signal sensor 101 and downstream flange 205, and then guarantee the stabilization of acoustical signal processing
Property, the installation pressure of acoustic signal sensor 101 is adjusted by adjusting fastening bolt 109 in preset value, preset value generally exists
Between 20N~40N.
Preferably, signal transmitting module is generally wireless antenna 107, which is arranged outside explosion-resistant enclosure 108
Portion, valves leakage detection device 208 are sent out acoustical signal waveform and relevant characteristic parameter by way of wireless transmission.By
In not transmitting signal outward by transmission cable, can in order to by valves leakage detection device 208 be mounted on hot environment it
Under.Wireless antenna 107 is connected with the wireless transmission circuit on acquisition module, the acoustical signal waveform for acquiring acquisition module and
Characteristic parameter is sent to control centre, and wireless antenna 107 is built in flame proof connector 106, and flame proof connector 106 meets explosivity
Environment electrical installation explosion-proof criteria, is embedded on explosion-resistant enclosure 108, positioned at the closed end of explosion-resistant enclosure 108.
Refering to Fig. 3, below to the installation method harmony of above-mentioned valves leakage detection device 208 provided in an embodiment of the present invention
Signal acquisition process is illustrated.
Step 301, fastening bolt 109 is adjusted, valves leakage detection device 208 is fixed on to the downstream flange of valve 204
205 and downstream flange 207 composed by whole axial sides；
Step 302, control centre sends wireless command, wakes up pressure signal Acquisition Circuit 105 by wireless command and works,
Start pressure sensor 102 to detect, obtains the installation pressure detection value F of acoustic signal sensor 101；
Step 303, fastening bolt 109 is adjusted, so that pressure detection value F is installed within the scope of preset value F0 allowable error,
To meet acoustical signal continuous-stable acquisition condition；
Step 304, the transmission when judgement installation pressure value F has been in values of valves leakage detection device 208
Ready, arrival data acquisition stability requirement has been installed by ready information, notice control centre；
Step 305, control centre sends wireless command, starting valves leakage acoustical signal acquisition, according to 204 class of measured valve
Type, size, process conditions set acoustical signal acquisition parameter and threshold condition, log-on data are adopted in conjunction with the installation pressure value of detection
Collection；
Step 306, acoustical signal original waveform, characteristic parameter are transmitted by wireless antenna 107, judges valve in control centre
204 it is normal when, only upload partial parameters and original waveform, when interior leakage occurs for doubtful valve 204, wireless command transfers leakage in complete
Acoustical signal, and all waveforms and parameter are uploaded by wireless antenna 107.
When replacing leakage acoustical signal data in the acquisition of other valves, above step 301 is repeated to step 306.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited thereto.At this
It, can be with various simple variants of the technical solution of the present invention are made in the range of the technology design of invention.Including each particular technique
Feature is combined in any suitable manner.In order to avoid unnecessary repetition, the present invention is to various combinations of possible ways
No further explanation will be given.But it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to the present invention
Protection scope.
Claims (12)
1. a kind of valves leakage detection device, which is characterized in that the detection device includes:
Acoustical signal processing module, for detecting the acoustical signal being equipped on the pipeline of the valve (204)；
Regulating part, for adjusting the installation pressure of the acoustical signal processing module；
Pressure detecting module, for detecting the installation pressure signal of the acoustical signal processing module；
Acquisition module, what acoustical signal and the pressure detecting module for acquiring the acoustical signal processing module detection detected
Pressure signal is installed；
Signal transmitting module, for sending the acoustical signal and the installation pressure signal that the acquisition module acquires.
2. valves leakage detection device according to claim 1, which is characterized in that the acquisition module includes:
Acoustical signal Acquisition Circuit, for acquiring the acoustical signal of the acoustical signal processing module detection；
Pressure signal Acquisition Circuit, for acquiring the installation pressure signal of the pressure detecting module detection；
Independent current source (104), for providing working power for the acoustical signal Acquisition Circuit and the pressure signal Acquisition Circuit.
3. valves leakage detection device according to claim 1 or 2, which is characterized in that the acoustical signal processing module, institute
It states pressure detecting module and the acquisition module is integrated in one and is built in guard shield.
4. valves leakage detection device according to claim 3, which is characterized in that the guard shield is explosion-resistant enclosure
(108), the explosion-resistant enclosure (108) is U-shaped.
5. valves leakage detection device according to claim 4, which is characterized in that the acoustical signal processing module is sound letter
Number sensor (101), the acoustic signal sensor (101) and the regulating part are separately mounted to the explosion-resistant enclosure of U-shaped
Open end two sides and opposite to each other.
6. valves leakage detection device according to claim 5, which is characterized in that the pressure detecting module is pressure biography
Sensor (102), the acoustic signal sensor (101) and the pressure sensor (102) are along perpendicular to the explosion-resistant enclosure
(108) direction in U-shaped opening direction sequentially coaxially overlays in the explosion-resistant enclosure from the inside to the outside.
7. valves leakage detection device according to claim 5, which is characterized in that the regulating part includes fastening bolt
(109), the fastening bolt (109) can be adjusted on the direction in the U-shaped opening direction perpendicular to the explosion-resistant enclosure (108)
It saves to separate or close the acoustic signal sensor (101).
8. valves leakage detection device according to claim 7, which is characterized in that the fastening bolt 109 is adjusted
Stroke is not less than 15cm.
9. valves leakage detection device according to claim 7, which is characterized in that the regulating part further includes universal gasket
(110), the universal gasket (110) is mounted on the one of close acoustic signal sensor (101) of the fastening bolt (109)
End.
10. valves leakage detection device according to claim 4, which is characterized in that the signal transmitting module is wireless
Antenna (107), the wireless antenna (107) are built in flame proof connector (106), and the flame proof connector (106) is mounted on described
The closed end of explosion-resistant enclosure (108).
11. valves leakage detection device according to claim 4, which is characterized in that the pipeline includes that more piece successively connects
Logical pipeline section, by flanged joint between every two adjacent sections pipeline section, the valve (204) is installed therein on one section of pipeline section, with
The axial ends portion of the adjacent downstream flange (205,207) of the valve (204) is clamped in the acoustic signal sensor (101)
Between the regulating part.
12. valves leakage detection device according to claim 11, which is characterized in that the downstream flange (205,207)
Axial ends portion suffered by clamping force between 20N-40N.
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|---|---|---|---|
| CN201711294112.2A CN109900437A (en) | 2017-12-08 | 2017-12-08 | Valves leakage detection device |
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|---|---|---|---|
| CN201711294112.2A CN109900437A (en) | 2017-12-08 | 2017-12-08 | Valves leakage detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012984A (en) * | 2020-09-21 | 2020-12-01 | 中国人民解放军海军工程大学 | Hydraulic slide valve internal leakage acoustic emission detection experimental device and using method thereof |
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