CN207248642U - Heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system - Google Patents
Heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system Download PDFInfo
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- CN207248642U CN207248642U CN201721233798.XU CN201721233798U CN207248642U CN 207248642 U CN207248642 U CN 207248642U CN 201721233798 U CN201721233798 U CN 201721233798U CN 207248642 U CN207248642 U CN 207248642U
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Abstract
The utility model discloses heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, shock wave transducer array and seismic wave sensors array including being laid in natural gas line both sides, the shock wave transducer is divided into array of parallel channels, vertical channel array and ramp way array, the seismic wave sensors array is divided into some channel arrays, each channel array is in different angles from natural gas line direction using the explosion starter crack point on natural gas line as starting point；The utility model has laid seismic wave sensors array and shock wave transducer array respectively in the both sides of natural gas line, realize the measurement of blast impulse comprehensive parameters, and analogized with this parameter, on the premise of number of sensors is limited, obtain the blast impulse comprehensive parameters in whole region.
Description
Technical field
The utility model belongs to pressure piping conveying engineering technical field, is related to a kind of heavy caliber high pressure natural gas line
The parameter measurement unit of explosion bulge test.
Background technology
High pressure gas pipeline road in the process of running, but due near field construction behavior, environmental corrosion, machinery or material failure,
The influence of natural calamity and other X factors, natural gas line bursting accident happen occasionally, the Blasting shock wave for generation of exploding,
Seismic wave not only results in serious financial consequences and environmental pollution, will also form ground staff's injures and deaths, building and facility and destroy
The catastrophic failure such as impaired.
To reduce loss as far as possible, accelerating the repairing process after accident occurs, heavy caliber high pressure gold is carried out extensively both at home and abroad
The cracking initiation of metal conduit and the mechanical behavior research of extension.Current research method be to natural gas line Blasting shock wave,
The mechanism of production of seismic wave, propagation law carry out theory analysis research, but it also has larger difference with actual explosive test,
Necessary that Full scale burst experiment is carried out to used metal tube, measurement obtains the parameters such as explosion wave, seismic wave, uses
In its Protective Research.
Utility model content
The purpose of this utility model is that propose a kind of heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring
System, by setting shock wave and seismic sensor array near natural gas line explosion initial crack, obtains pipeline and lays
The explosive parameters in region.
The technical solution of the utility model is as follows：
Heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, including it is laid in natural gas line both sides
Shock wave transducer array and seismic wave sensors array, the shock wave transducer is divided into array of parallel channels, vertical
Channel array and ramp way array, the explosion starter crack point that the array of parallel channels is arranged on natural gas line are
Position of the initial point parallel to natural gas line direction；It is starting point that the vertical channel array, which is arranged on explosion starter crack point,
Perpendicular to the position in natural gas line direction, it is starting point and day that the ramp way array, which is arranged on explosion starter crack point,
Right feed channel direction is in 45 ° of direction position；The seismic wave sensors array is divided into some channel arrays, each passage battle array
Row are in different angles from natural gas line direction using the explosion starter crack point on natural gas line as starting point.
It is adjacent in array of parallel channels in above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system
The spacing of sensor is equal, the spacing of adjacent sensors in vertical channel array, ramp way array and seismic wave channel array
Outwards it is stepped up from starting point.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, shock wave transducer is fixation
Free-field blast pressure "pencil" sensor on strut；The strut is open circles mast, is fixed on the ground by concrete bed.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, different height are provided with strut
The sensor fixing hole of degree, sensor is fixed according to test requirements document to be located at various height.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, free-field blast pressure "pencil" sensor is
Bullet type structure, the aerial shock motion direction of pressure sensitive cells face of pointed portion, Sensor tail are fixed on strut
On.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, seismic wave sensors are acceleration
Spend the combination of sensor and velocity sensor.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, seismic wave sensors are arranged on
On bottom plate, bottom plate is fixed in soil by anchor pole.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, seismic wave sensors are arranged on
In fixed plate, arc-shaped through-hole is provided with the fixed plate, screw passes through the bottom plate connecting of arc-shaped through-hole and lower part.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, seismic wave sensors passage battle array
Row and the angle in natural gas line direction are 0 °, 30 °, 60 ° and 90 ° respectively.
In above-mentioned heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, heavy caliber high pressure natural gas tube
To fill high-pressure gas seal pipeline, explosion starter crack point is arranged on the centre position of natural gas line in road.
The advantageous effects that the utility model has are as follows：
First, the utility model has laid seismic wave sensors array and shock wave sensing in the both sides of natural gas line respectively
Device array, realizes the measurement of blast impulse comprehensive parameters, and is analogized with this parameter, on the premise of number of sensors is limited,
Obtain the blast impulse comprehensive parameters in whole region；
2nd, the utility model shock wave transducer is arranged to parallel channels, vertical channel and ramp way, measurement obtain with
Natural gas line explosion starter crack point be starting point shock wave parameter, and different sensors passage lay sensor spacing
Difference, matches with blast impulse propagation velocity, meets the requirement of Measurement Resolution.
3rd, the shock wave transducer of the utility model uses the free field piezoresistance sensor of bullet type, by tip in test
Partial pressure-sensitive unit face explosion starter crack point, Sensor tail is fixed on strut, and uses elastic support, is effectively subtracted
Influence when weak shock wave is propagated in the earth to free field impact wave measurement result.
4th, the seismic wave sensors array of the utility model is arranged along pipeline angle different directions, and sensor
Using it is near it is close far dredge by the way of arrangement mode, match with System For Deep Explosion Seismic Sounding propagation velocity, meet the requirement of Measurement Resolution.
5th, the utility model overcomes by acceleration transducer and velocity sensor by steel plate and anchor pole fixed bottom boundary
Soil property it is soft or it is soft or hard it is uneven caused by not a pair of of measurement result of Medium Propagation characteristic influence.
6th, acceleration transducer and velocity sensor are arranged in fixed plate by the utility model, pass through screw and arc
Plate carries out setting angle fine setting so that the X-direction of sensor is consistent with seismic wave direction, it is ensured that three in seismic survey
Directional acceleration and the accuracy of tachometric survey.
Brief description of the drawings
Fig. 1 is sensor placement schematic diagram in the utility model Integrated Measurement System；
Fig. 2 is sensor stand schematic diagram in the utility model blasting impact wave measuring system；
Fig. 3 is the utility model free field shock wave transducer layout diagram；
Fig. 4 arranges schematic diagram for the utility model seismic wave sensors and soil；
Fig. 5 is the utility model seismic wave measurement sensor angle adjustment principle schematic；
Fig. 6 is the functional block diagram of the utility model sensor dynamic signal detecting and analysing system.
Reference numeral is：1-pipeline；2-explosion starter crack point；3-shock wave transducer is layouted；4-parallel channels
Array；5-vertical channel array；6-ramp way array；Shock motion direction in 7-soil；8-concrete bed；9—
Strut；10-free field shock wave transducer；11-sensor fixing hole；12-aerial shock motion direction；14-earthquake
Wave sensor channel array；15-soil；16-bottom plate；17-screw；18-fixed plate；19-velocity sensor；20-add
Velocity sensor；21-anchor pole；22-arc-shaped through-hole；23-seimic wave propagation direction.
Embodiment
The seismic wave and shock wave that pipe explosion produces are an important factor for possible causing proximity structure thing and pipeline damage.
If the amplitude for the seismic wave that explosion produces reaches certain threshold value and master oscillator frequenc and the neighbouring works natural frequency of vibration are close consistent
When, it would be possible to cause proximity structure thing or other facilities to be damaged destruction.The main purpose of attenuation of seismic waves test is research pipeline
The medium particle movement rule of blasting vibration effect.By the analysis of test data, research explosion earthquake moves medium particle vibration
The time history curve of displacement, speed and acceleration, by the analysis to oscillogram, is calculated characterization explosion earthquake wave property
The basic parameter such as amplitude, duration and vibration frequency, and the spectral characteristic of seismic wave.
Extent of the destruction and seismic wave particle movement velocity amplitude and frequency of seismic wave of the attenuation of seismic waves to buildings or structures
It is related.The particle movement acceleration of seismic wave can reflect the size for acting on load on building, study the change of the physical quantity
Rule can be that announcement works stress and failure mechanism lay the foundation.For this reason, testing program determines the particle to seismic wave
Movement velocity and acceleration are carried out at the same time test.Speed is placed at measuring point i.e. in natural gas line near zone at the same time with adding
Velocity sensor.According to testing program, measuring point is arranged in the certain area of attenuation of seismic waves spread scope, installation is selected to pair
Velocity sensor and acceleration transducer combination, follow up amplifier and register instrument is coupled, then carries out follow-up analysis
Processing.
And air-shock wave test uses the test method of piezoresistive pressure sensor, which is suitable for testing quick-fried
Fried air-shock wave transient signal.Need to only study near-earth Area Objects in view of practical situation, mainly personnel and building etc. by
The occurrence situation of explosion wave, this project use two dimensional field testing scheme near the ground, are sensed using distributed pressure drag type pressure
Device test system carries out the test of natural gas line Blasting shock wave.
As shown in Figure 1, in order to realize that the shock wave parameter in whole blast area measures, the cloth near natural gas line 1
Shock wave transducer array and seismic wave sensors array are put, shock wave transducer is divided into array of parallel channels 4, vertical channel battle array
Row 5 and ramp way array 6, the explosion starter crack point 2 that array of parallel channels 4 is arranged on natural gas line are parallel for starting point
In the position in natural gas line direction；Vertical channel array 5 be arranged on explosion starter crack point 2 for starting point perpendicular to natural gas
The position of duct orientation, ramp way array 6 are arranged on explosion starter crack point 2 and are in 1 direction of natural gas line for starting point
45 ° of direction position；Wherein each passage 10 measuring points of preferred arrangement, the whole audience totally 30 free field pressure-measuring-points.Parallel channels
The spacing of adjacent sensors is equal in array 4, in vertical channel array 5 and ramp way array 6 spacing of adjacent sensors from
Starting point is outwards stepped up.
Seismic wave sensors array is divided into some channel arrays 14, and each channel array is risen with the explosion on natural gas line
Beginning crack point 2 is starting point, and is in different angles from 1 direction of natural gas line.Angle in figure be respectively 0 °, 30 °, 60 ° and
90°.The spacing of adjacent sensors is outwards stepped up from starting point in seismic wave channel array 14.The reason for such a layout, exists
In：First, premenstruum (premenstrua) model investigation obtains, pipe explosion seismic wave is different from the one of common group's explosive charge seismic wave
Point is that the intensity distribution of pipe explosion seismic wave has directionality, i.e., on the direction different from conduit axis angle, seismic wave matter
The peak value and attenuation law of point movement velocity are different.Therefore, different surveys line is moved towards using four, to study pipe explosion
The directionality of seismic wave intensity spatial distribution.Second, premenstruum (premenstrua) model investigation obtains, the pipe explosion attenuation of seismic wave is obeyed
The decay of power law distribution, i.e. near region is fast, and far field decay is slow.Therefore sensor using it is near it is close it is far thin by the way of arrange.
Natural gas line uses the pressure filled with more than 10MPa and pipeline closed at both ends, and diameter is more than 1m, and draw ratio is big
In 100, explosion starter crack point 2 is arranged on the centre position of natural gas line.
As shown in Figures 2 and 3, free-field blast pressure "pencil" sensor is fixed in the air of ground certain distance, is devised
Free-field blast pressure "pencil" sensor stent, bracket base are the concrete beds 8 of a 0.3m × 0.3m × 0.3m, and center is opened in one
Footpath is the perforation threaded hole of 3.5cm, as sensor fixing hole 11, meets a 2m long above, the hollow cylinder that outside diameter is 3.5cm
Bar, the lower end of bar are affixed with base by screw thread.Two diameters are respectively opened at base 1.0m, 1.3m, 1.6m, 1.9m on bar
The center of circle for the cross section for passing through bar for the device to hole of 1.1cm, device to hole line.According to live needs, pair of one height and position of selection
Hole, this experimental selection 1.9m height device to hole.The solid reinforcing rod of a piece a diameter of 1cm is passed through into device to hole, iron wire is fastened
In on bar.During installation, concrete bed embedment underground about 0.3m, makes base top be flushed with ground, free-field blast pressure "pencil" sensor
It is fixed on by iron wire and adhesive tape on solid reinforcing rod.
Free-field blast pressure "pencil" sensor 10 is bullet type structure in Fig. 3, and the pressure sensitive cells face of pointed portion is rushed in the air
Direction of wave travel 12 is hit, Sensor tail is fixed on strut 9, and 7 be shock motion direction in soil.Transmitted according to shock wave former
Reason, the propagation rate of shock wave in solids is that propagation rate is slightly fast in air, to prevent the shock wave of fire point generation
Terrestrial transmission is first passed through to strut 9, influence is brought to measurement result, using the overhanging fixed form of this sensor, fully profit
With the length of bullet type sensor, Sensor tail is fixed on strut 9, and head is overhanging along shock motion direction, when
It is slow along air borne speed but it is apart from short when the shock wave propagated from demolition point is propagated at the same time along air and ground respectively,
It can ensure that the pressure sensitive cells of pointed portion first receive shockwave signal, then just propagate to branch along the shock wave in soil
Bar, while using the elasticity of stent itself, weaken influence of the earth shock to measurement result to a certain extent.
Earthquake wave measurement uses velocity sensor and acceleration transducer.Velocity sensor uses magneto-electric velocity pick-up
Vibration signal, is transformed into electric signal, it is mainly by magnetic circuit system, inertia mass, spring Buddhist nun etc. by device using magnetoelectric induction principle
Part forms.Magnet is rigidly fixed in sensor housing, inertia mass, is hung on shell with spring element.During work,
Sensor is installed on machine, in machine vibration, in working sensor frequency range, coil and magnet relative motion,
Cutting magnetic line, produces induced voltage in coil, which is proportional to vibration speed value.It is matched with secondary meter
Show the size of vibration velocity or displacement, other secondary meters or A.C. voltmeter can also be transported to and measured.Wherein
The frequency range of velocity sensor is 5-500Hz, and the tens of cm/s of range, Measurement Resolution 0.01cm/s, single sensor can be real
The measurement in existing three directions of xyz axis.
Acceleration transducer uses piezoelectric acceleration transducer, its work of piezoelectric effect based on piezo-electric crystal.It is main
To include spring, mass block, pedestal, piezoelectric element and holding ring, piezoelectric element-mass block-spring system dress is in a circle
On heart pillar, pillar is connected with pedestal.Pedestal has deformation then to directly affect vibration pickup output.The wherein frequency of acceleration transducer
Rate scope is 5-300Hz, the tens of cm of range2/ s, Measurement Resolution 0.01cm2/ s, single sensor can realize three sides of XYZ axis
To measurement.
Due to being gobi soil in test site, hardness is difficult to excavate greatly, and surface dust of the surface covered with 5cm or so and broken
Stone, can not be by sensor and ground close adhesion.If sensor is directly embedded in soil surface, it will because fluffy configuration shadow
Sound arrives measurement result.
In order to solve this problem, experimenter devises dedicated sensor fastening device.The device is that a block size is
The steel plate of 15cm × 20cm × 0.5cm, four corners of steel plate open up the circular hole of 4 a diameter of 1cm, with the anchor of 4 20cm long
Bar is by Interal fixation on ground.Acceleration transducer and velocity sensor are fixed on steel plate using dedicated 704 latex.If
When putting sensor, it is to be ensured that sensors X direction of principal axis alignment detonation center, to ensure that X-axis passage measures horizontal radial vibration data,
Y-axis passage measures horizontal tangential vibration data, and Z axis passage measures vertical vibration data.
As shown in Figure 4 and Figure 5, as a preferred embodiment, seismic wave sensors are arranged in fixed plate 18, Gu
Arc-shaped through-hole 22 is provided with fixed board 18, screw 7 couples through arc-shaped through-hole 22 with the bottom plate 16 of lower part.And acceleration transducer
20 and velocity sensor 19 be bonded in fixed plate 18, bottom plate 16 is then fixed in soil 15 by anchor pole 21.
Fixed plate 18 is also steel plate, its both sides is provided with two arc-shaped through-holes 22, bottom plate 16 corresponding with arc-shaped through-hole 22
On be machined with 2 or 4 threaded holes that outside diameter matches, after anchor pole 21 fixes bottom plate 16, in order to realize sensor Y-axis side
To the collimation with center of detonating, by way of rotating fixed plate 18 it can be made to be rotated around center, ensure screw thread
While hole is alignd with arc-shaped through-hole 22, the adjusting in sensor alignment direction is realized, it is ensured that the earthquake in three directions of XYZ axis
Parameter accurate measurement at the same time.
As shown in fig. 6, the dynamic signalling analysis system based on DH5960 of selection is come stored record and analyte sensors
Signal.The system is network-type dynamic signalling analysis system, can complete to strain, vibrate (acceleration, speed, displacement), punching
The test and analysis of a variety of physical quantitys such as pressure of hammer wave, noise, temperature and static pressure, flow, moment of torsion, voltage, electric current.
DH5960 surpasses dynamic signalling analysis system important technological parameters：Input mode DC, AC, GND and half-bridge, full-bridge, highest wink
State sample frequency 20MHz, frequency response DC~1MHz, the caching 8M points per passage are real using the system per 16 A/D of passage independence
The measurement and analysis of blast impulse wave parameter are showed.
The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
1. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system, it is characterised in that：It is natural including being laid in
The shock wave transducer array and seismic wave sensors array of feed channel (1) both sides, the shock wave transducer is divided into parallel
Channel array (4), vertical channel array (5) and ramp way array (6), the array of parallel channels (4) are arranged on naturally
Position of the explosion starter crack point (2) of feed channel for starting point parallel to natural gas line direction；The vertical channel battle array
Row (5) be arranged on explosion starter crack point (2) for starting point perpendicular to the position in natural gas line direction, the ramp way
Array (6) is arranged on the direction position that explosion starter crack point (2) is in 45 ° for starting point and natural gas line (1) direction；
The seismic wave sensors array is divided into some channel arrays (14), and each channel array is with quick-fried on natural gas line
Broken starter crack point (2) is starting point, and is in different angles from natural gas line (1) direction.
2. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 1, its feature
It is：The spacing of adjacent sensors is equal in the array of parallel channels (4), vertical channel array (5), ramp way array
(6) and in seismic wave channel array (14) spacing of adjacent sensors is outwards stepped up from starting point.
3. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 1, its feature
It is：The shock wave transducer is the free-field blast pressure "pencil" sensor (10) being fixed on strut (9)；The strut (9)
For open circles mast, fixed on the ground by concrete bed (8).
4. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 3, its feature
It is：The sensor fixing hole (11) of different height is provided with the strut (9), sensor is fixed on according to test requirements document
At different height.
5. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 3, its feature
It is：Free-field blast pressure "pencil" sensor (10) is bullet type structure, and the aerial shock wave of pressure sensitive cells face of pointed portion passes
Direction (12) is broadcast, Sensor tail is fixed on strut (9).
6. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 1, its feature
It is：The seismic wave sensors are the combination of acceleration transducer (20) and velocity sensor (19).
7. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 1, its feature
It is：The seismic wave sensors are arranged on bottom plate (16), and bottom plate (16) is fixed in soil (15) by anchor pole (21).
8. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 6, its feature
It is：The seismic wave sensors are arranged in fixed plate (18), and the fixed plate is provided with arc-shaped through-hole on (18)
(22), screw (17) couples through arc-shaped through-hole (22) with the bottom plate (16) of lower part.
9. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 6, its feature
It is：Seismic wave sensors channel array (14) and the angle in natural gas line (1) direction are 0 °, 30 °, 60 ° and 90 ° respectively.
10. heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system according to claim 1, its feature
It is：To fill high-pressure gas seal pipeline, explosion starter crack point (2) is arranged on naturally heavy caliber high pressure natural gas line (1)
The centre position of feed channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233798.XU CN207248642U (en) | 2017-09-25 | 2017-09-25 | Heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721233798.XU CN207248642U (en) | 2017-09-25 | 2017-09-25 | Heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system |
Publications (1)
| Publication Number | Publication Date |
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| CN207248642U true CN207248642U (en) | 2018-04-17 |
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ID=61886907
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721233798.XU Expired - Fee Related CN207248642U (en) | 2017-09-25 | 2017-09-25 | Heavy caliber high pressure natural gas line explosion bulge test comprehensive parameter measuring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207248642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376633A (en) * | 2020-11-24 | 2021-02-19 | 中冶京诚工程技术有限公司 | Gas explosion simulation experiment device and method for gas cabin of urban comprehensive pipe gallery |
| CN112924269A (en) * | 2021-01-11 | 2021-06-08 | 国家管网集团西部管道有限责任公司 | Method and test device for simulating third-party damage to large-caliber high-pressure pipeline |
-
2017
- 2017-09-25 CN CN201721233798.XU patent/CN207248642U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376633A (en) * | 2020-11-24 | 2021-02-19 | 中冶京诚工程技术有限公司 | Gas explosion simulation experiment device and method for gas cabin of urban comprehensive pipe gallery |
| CN112924269A (en) * | 2021-01-11 | 2021-06-08 | 国家管网集团西部管道有限责任公司 | Method and test device for simulating third-party damage to large-caliber high-pressure pipeline |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180417 Termination date: 20200925 |