CN103808476A - Hyper-pressure explosion detection system - Google Patents
Hyper-pressure explosion detection system Download PDFInfo
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- CN103808476A CN103808476A CN201210436965.6A CN201210436965A CN103808476A CN 103808476 A CN103808476 A CN 103808476A CN 201210436965 A CN201210436965 A CN 201210436965A CN 103808476 A CN103808476 A CN 103808476A
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000004880 explosion Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000001276 controlling effect Effects 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 238000005422 blasting Methods 0.000 claims description 13
- 230000001629 suppression Effects 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000002045 lasting Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000001513 Elbow Anatomy 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229940097275 Indigo Drugs 0.000 description 1
- 240000007871 Indigofera tinctoria Species 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036245 labor capacity Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000001050 lubricating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002965 rope Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
This invention relates to a hyper-pressure explosion detection system, comprising a pneumatic water pressure boosting unit, a detection control monitor system, an air compressor, filters and metering water tanks. In the meantime, the hyper-pressure explosion detection system is provided with a servo valve. The driving air pressure can be automatically adjusted through the detection control monitor system so as to control the speed of boosting pressure of the system. Furthermore, in the process of explosion, step-by-step pressurization and pressure maintaining are adopted in order to provide convenience to detect whether the members to be detected have leakage points. If the leakage points exist, pressure discharging can be performed promptly and the detection can be carried on after the leakage points are processed. The detection result can be transmitted to the detection control monitor system through stay wire sensors and the data is sorted and stored. The detection control monitor system can automatically form a detection report. The beneficial effects of the hyper-pressure explosion detection system are that the hyper-pressure explosion detection system replaces the electric plunger pump in the traditional detection system with a multi-pneumatic combination, which meets the detection of various pipe fittings, and that the detection monitor system realizes systematization and standardization and automatically stores data and forms a test report, which not only enables the detection process to be safe and reliable, but also makes the usage convenient.
Description
Technical field
The present invention relates to a kind of pressure detection technical field, relate in particular to a kind of ultra-high pressure blasting detection method.
Background technology
Explosion detection technique is applied to weldless steel tube, welded still pipe, insulating tube, elbow, threeway, reduced pipe, valve, pipe-hanger support, expansion bellow, oil well head device, seal, securing member and tubulation with in the pipe fittings such as metal material, in existing detection technique, user adopts electrical plunger pump to implement supercharging explosion to steel pipe mostly, there is a lot of problems and shortcoming: (1) is just simply by scattered equipment connection and startup, there is no systematization, function singleness, control simply, labor capacity is large; (2) pressure that single motor pump can provide and flow are all very limited, can not be used for the explosion of hyperpressure, can not be undertaken by desirable rate of pressurization; (3) do not have dedicated test software to support mutually, can not setup parameter, can not show pressure curve, there is no the early warning before ultra-high pressure blasting, can not store the data that produce in ultra-high pressure blasting process of the test; (4) can not detect the parameters such as yield pressure, inflow, multiple spot strain, circumferential deformation amount, only can measure burst pressure.
Summary of the invention
The object of this invention is to provide a kind of ultra-high pressure blasting detection method, the deficiency existing to overcome currently available technology.
The object of the invention is to be achieved through the following technical solutions:
A kind of ultra-high pressure blasting detection method, comprises the following steps:
1) first stay wire sensor is fixed on to tested steel pipe both sides, and installs the position of camera, overall monitor;
2) air is passed into exhaust end base of oil injection threaded bolt formula air compressor machine and compress, then the air after compression is passed in cooling driers, remove most moisture in air;
3) air obtaining in step 1) is stored through gas-holder, then fall airborne impurity and moisture through two-stage filter high efficiency filter, gas is passed in pneumatic hydraulic pressure pressure charging system air pressure is provided the most at last;
4) in step 2) and in step 3) carries out, metering water tank is subject to the control of observing and controlling supervisory system, two water tanks are intake in turn and are supplied water, for pneumatic hydraulic pressure pressure charging system provides lasting hydrodynamic force, in water tank, liquid level data collects computer in addition, demonstrates after treatment inflow and time curve;
5) observing and controlling supervisory system control also selects to start corresponding pneumatic liquid pump automatically, and electric pressure-regulating valve automatically regulates and drives air pressure under the control of electric signal, thereby controls liquid pump rate of circulation and delivery rate, and tested pipe fitting is implemented to explosion test; And
6) when tested pipe fitting occurs after distortion, signal is passed to observing and controlling supervisory system by stay wire sensor, and observing and controlling supervisory system is processed and stored for each signal, and monitored picture is transferred to display, display shows various data and curve, automatically forms test report simultaneously.
Further, in step 5), described explosion test comprises the following steps: 1) water inlet and the water delivering orifice pipe of tested pipe fitting are installed, and water inlet tube interface is first installed after good seal, and tested pipe fitting water outlet pipe is not sealing completely first; 2) suppress test, first will be the limited Bas Discharged in tested pipe fitting, suppress a period of time, whether the water outlet of observing tested pipe fitting has water to overflow, until water overflows continuously, stop suppressing, now, due to not sealing, system does not have pressure, so do not need pressure release, at this moment the water in tested pipe fitting is discharged completely, water outlet pipe fit sealing; 3) formally suppress, suppress the incipient stage, whether the interface that will pay close attention to the water inlet of tested pipe fitting and water delivering orifice pipe and cut-off clack box the moment seals intact, if find that there is drainage, need to stop suppressing, manually after pressure release at once, the interface at the place of leaking is reinstalled, again suppress, after many experiments, until confirm that each sealing joint is intact; If there is no drainage, be sealing intact, just can suppress.
Beneficial effect of the present invention is: the present invention adopts pneumatic liquid pump supercharging, utilize dexterously its output pressure and driven air pressure this feature that is directly proportional, guarantee the adjustable controlled performance of output pressure flow, not only powerful, and testing process is comprehensive, system, mainly comprise following functions: (1) is applicable to the steel pipe explosion of three kinds of pressure ratings, and pressure is optional, controlled, and flow is adjustable; (2) parameter of test is comprehensive, comprises yield pressure, burst pressure, inflow, deflection, strain etc.; (3) curve showing is in real time comprehensive, comprises pressure-time curve, inflow-time curve, deflection-time curve, dependent variable-time curve etc., and all curves can amplify and dwindle, and arbitrarily show the numerical value of selected location; (4) manually with automatically optional, dirigibility is strong; (5) TT&C software is friendly flexibly, comprises multiple interface, as data acquisition interface, state of a control interface, can freely switch; (6) all image data can store specific data file into, conveniently call.Each test can generate word version test report automatically, can directly print, and signs and seal and comes into force; (7) safety practice is proper, comprises multiple warning and the Forewarning Measures such as safety valve, rupture disk, explosion early warning, air compressor machine early warning, water supply early warning, undesired shutdown, has guaranteed the smooth use of whole system engineering.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the process flow diagram of a kind of ultra-high pressure blasting detection method described in the embodiment of the present invention;
Fig. 2 is the schematic diagram of pneumatic liquid pump in a kind of ultra-high pressure blasting detection system described in the embodiment of the present invention.
In figure:
1, air compressor machine; 2, gas-holder; 3, filtrator; 4, observing and controlling supervisory system; 5, camera; 6, stay wire sensor; 7, tested pipe fitting; 8, pneumatic hydraulic pressure compress cell; 9, metering water tank.
Embodiment
As shown in Figure 1, a kind of ultra-high pressure blasting detection method described in the embodiment of the present invention, comprises the following steps: 1) first stay wire sensor 6 is fixed on to tested pipe fitting 7 both sides, and installs the position of camera 5, overall monitor; 2) air is passed into exhaust end base of oil injection threaded bolt formula air compressor machine 1 and compress, then the air after compression is passed in cooling driers, remove most moisture in air; 3) air obtaining in step 1) is stored through gas-holder 2, then fall airborne impurity and moisture through two-stage filter 3 high efficiency filters, gas is passed in pneumatic hydraulic pressure compress cell 8 air pressure is provided the most at last; 4) in step 2) and in step 3) carries out, metering water tank 9 is subject to the control of observing and controlling supervisory system 4, two water tanks are intake in turn and are supplied water, for pneumatic hydraulic pressure compress cell 8 provides lasting hydrodynamic force, in water tank, liquid level data collects computer in addition, demonstrates after treatment inflow and time curve; 5) corresponding pneumatic liquid pump is controlled and automatically selected to start to observing and controlling supervisory system 4, and electric pressure-regulating valve automatically regulates and drives air pressure under the control of electric signal, thereby control liquid pump rate of circulation and delivery rate, and tested pipe fitting 7 is implemented to explosion test; 6) when distortion back guy sensor 6 appears in tested pipe fitting 7, signal is passed to observing and controlling supervisory system 4, observing and controlling supervisory system 4 is processed and is stored for each signal, and monitored picture is transferred to display, display shows various data and curve, automatically forms test report simultaneously.
Concrete operations rules are as follows:
Preparatory work of experiment: before experiment, please shift to an earlier date tested pipe fitting 7 is installed and fill water.
Hardware is prepared: (noting: now do not open any power supply)
A. stay wire sensor 6: stay wire sensor 6 is installed, and in wire casing, reserved label line and the signal wire connection of sensor are: palm fibre-palm fibre, indigo plant-indigo plant, shielding-shielding, that wiring is wanted is correct, firmly, avoid causing short circuit to burn sensor and collecting device;
B. strainmeter: according to pasting the standard that becomes sheet, post foil gauge.When weld strain sheet, leading-out terminal should be marked with channel position, and a passage of the corresponding strainmeter of each sequence number, easily searches when signal has fault like this and deal with problems;
C. manually-operated gate: the vent valve of air compressor machine 1 must keep closed condition before experiment starts.Secondly, the hand valve on two water tanks stays open state.And the lock of well that guarantees Tank Injection Water is opening, in case the water yield (automatically under running status, as long as well opens, water tank is can automatic water filling) not in experimentation.Water pump place control water pump is suppressed the manually-operated gate of speed, keeps closed condition;
D. be sure of wiring errorless rear (not allowing the end of a thread short circuit by it), just can power on to switch board.
System software explanation:
A. system, switch board power on, and select mode of operation;
B. the button in the screen lower left corner is opened-clicked to air compressor machine 1, opens rear air compressor machine 1 upper pressure automatically;
Whether c. open industrial computer, search hydraulic pressure demolition software and open, under default conditions, this software is that start is automatically actuated, please manually boot software if be not activated;
D. open after software, click main interface blank space, can eject the login window on right side, input username and password, click enters system after determining;
If e. select button indication [operation automatically], click operation start button automatically, system starts automatically to suppress, and now needs, in the mechanical cabinet of pump, to open the flow speed control valve of pump.For example 1# low-lift pump, open the yellow hand valve of the pump in the lower right corner, can standard-sized sheet, and now air compressor machine provides driving gas, and system can automatic water-supply, only need to open this valve, and pump just can be worked.The class of operation of other pumps seemingly.If need to stop, clicking the stop button of operation automatically;
If f. select button indication [manually operation], on control desk, there are operation beginning and shut-down operation button that each equipment is corresponding, for example 1# low-lift pump, 2# low-lift pump, 1# high-pressure pump, 2# high-pressure pump, 1# water tank, 2# water tank, system water filling, pressure release etc. have corresponding beginning and stop button.Can carry out the examination of pump and suppress work, due to manual operation more complicated, suggestion is used [operation automatically].When system decompression, need to select manual operation, click pressure release operation button, if need to stop pressure release, click pressure release stop button;
G., after the examination of four pumps has been suppressed, can start test.
Explosion bulge test:
A., water inlet and water delivering orifice pipe that tested pipe fitting 7 is installed, water inlet tube interface is first installed after good seal, tested pipe fitting 7 water outlet pipes, suggestion is not sealing completely first;
B. suppress beginning, first will be the limited Bas Discharged in tested pipe fitting 7.Suppress a period of time, whether the water outlet of observing tested pipe fitting 7 has water to overflow, until water overflows continuously, can stop suppressing, and now, due to not sealing, system does not have pressure, so do not need pressure release.At this moment the water in tested pipe fitting 7 is discharged completely, water delivering orifice fit sealing;
C. formally suppress, suppress the incipient stage, to pay close attention to the entrance and exit of tested pipe fitting 7 moment and whether the interface of cut-off clack box seals intactly, if find that there is drainage, need to stop suppressing at once, manually after pressure release, the interface at the place of leaking is reinstalled, again suppressed, after many experiments, until confirm that each sealing joint is intact, can formally suppress;
D. 6 moment of stay wire sensor are monitored tested pipe fitting 7 profile transformation situations, occur that distortion back guy sensor 6 gathers voltage signal, and signal is passed to observing and controlling supervisory system 4;
E. observing and controlling supervisory system 4 is processed the signal of collection and store, and forms data and curves simultaneously, and automatically forms test report.
According to testing requirements, mainly carry out large-diameter steel pipe and tubular equipment hydraulic pressure and explosion bulge test, unit under test volume is larger, but test pressure is relatively low.According to the relevant steel pipe explosion bulge test standard of above parameter and country, existing heavy caliber welded tube, maximum rate of water make-up is at 1m
3left and right, but burst pressure can not exceed 40MPa; Small-caliber steel pipe pressure is higher, but bore is relatively little, and rate of water make-up is little.So system select 2 Haskel exclusive 14 " gas drive liquid pump is as system core parts, its separate unit flow can reach Max.10L/min, working pressure can reach Max.60MPa, life-span 5 times of common gas drive supercharge pump especially.Unit under test fills after water, within 3～4 hours, completes explosion bulge test (total rate of water make-up 1m if meet
3left and right), system is opened separate unit 14 " gas drive liquid pump, Estimated Time Of Completion is about 2 hours.Blasting system adopts double pump configuration, and it is one standby that normal condition one is opened, and is conducive to extend the life-span of supercharge pump, also can prevent emergency case (as a supercharge pump in process of the test breaks down, can open standby pump and continue test).In particular cases also can open two supercharge pumps, to increase system output stream amount simultaneously.System configuration servo-valve, thus automatically adjust by it rate of rise that drives atmospheric pressure control system, and user can be according to the testing requirements initialization system rate of rise.In blasting process, can boost step by step, pressurize, whether there is leak source to detect tested pipe fitting 7, if any leak source pressure release in time, after handling, can continue test.Field condition is observed and omnidistance video recording by camera 5, can be used for observing interface leak, observes and suppresses field conditions and observe steel pipe explosion situation.
As shown in Figure 2, Pneumatic Liquid pump work principle: pneumatic liquid pump is unlubricated, reciprocating-piston pressure generating equipment.Output pressure:
The piston area difference at intensifier piston bar two ends, passes into driving gas in the chamber being connected with large piston, and by being used alternatingly two operation valves of suction and Exhaust Gas, piston can to-and-fro movement.In reciprocating motion of the pistons process, according to stress balance, valve piston end produces high pressure.Pneumatic liquid pump has following feature: air driven-nothing produces heat, Mars and spark hazard; Output pressure is high-and maximum pressure output valve reaches 10,000psi(700MPa); Self-lubricating equipment-unique Sealing Technology can make supercharger work under unlubricated condition.Lubricating without any need for form in the high-pressure working chamber that uses nonmetallic bearing and wear-compensating sealing.Both saved operating cost, and avoided again evaporating petroleum gas surrounding environment is polluted; Do not need cooling system, noise is low; Volume is little, lightweight, and handled easily is easy to maintenance; Easy care, without extra lubricated and cooling link, seal life is long, product easy care; It is unrestricted to stop continuously or open, and has no adverse effect, reliable, compact conformation.
Observing and controlling supervisory system 4: TT&C system is born the functions such as the Control & data acquisition, processing, storage of whole engineering equipment, supervisory system is responsible for required monitored picture to be sent to display, configurable 24 covers can controlled camera head 5 as required, and operating personnel can carry out the work such as far and near adjustment, amplification, storage.Observing and controlling supervisory system 4 is integrated on tetrad monitoring and control unit in the lump; The hardware components of TT&C system mainly comprises industrial computer, 19 " composition such as liquid crystal display, PLC, data acquisition module, insurance, power supply; explosion situ configuration high-pressure sensor, stay wire sensor 6; metering water tank configuration liquid level sensor; these analog quantitys are all transported to PLC and industrial computer, and process by exclusive data acquisition software.Also comprise in addition measurement and the data processing of strain.
On-the-spot installation: comprise that equipment is in place, water and electricity supply, pipeline construction, design parameter is as follows:
Security protection: in (1) pneumatic hydraulic pressure pressure charging system internal configurations, each stage pressure all configures safety valve or rupture disk, just in case exceed set pressure meeting releasing pressure automatically to safety zone; (2) tested steel pipe need to be placed in underground hole on V-type seat, fixes with multiple tracks wire rope; (3) camera 5 is arranged on and needs to monitor place most, as melt pit two ends, melt pit periphery, tensimeter demonstration etc., both for monitoring that test situation is also for monitoring whether periphery exists unrelated person, guarantees safety; (4) testing ground draws warning line to enforce martial law; (5) testing software in TT&C system is designed with multinomial warning early warning and shows, comprise drive air pressure not enoughly to report to the police, quantity of water in water tank is not enough when reporting to the police, reveal the pressure rise causing and slowly reporting to the police and approach explosion early warning etc.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection scope of the present invention.
Claims (2)
1. a ultra-high pressure blasting detection method, is characterized in that, comprises the following steps:
1), stay wire sensor (6) is fixed on to tested pipe fitting (7) both sides, and install the position of camera (5), overall monitor;
2), air passed into exhaust end base of oil injection threaded bolt formula air compressor machine (1) compress, then the air after compression is passed in cooling driers, remove most moisture in air;
3), by the air obtaining in step 1) through gas-holder (2) store, then pass through two-stage filter (3) high efficiency filter and fall airborne impurity and moisture, gas is passed in pneumatic hydraulic pressure compress cell (8) air pressure is provided the most at last;
4), in step 2) and in step 3) carries out, metering water tank (9) is subject to the control of observing and controlling supervisory system (4), two water tanks are intake in turn and are supplied water, for pneumatic hydraulic pressure compress cell (8) provides lasting hydrodynamic force, in water tank, liquid level data collects computer in addition, demonstrates after treatment inflow and time curve;
5) corresponding pneumatic liquid pump is controlled and automatically selected to start to, observing and controlling supervisory system (4), electric pressure-regulating valve automatically regulates and drives air pressure under the control of electric signal, thereby control liquid pump rate of circulation and delivery rate, tested pipe fitting (7) is implemented to explosion test; And
6), when tested pipe fitting (7) occurs after distortion, signal is passed to observing and controlling supervisory system (4) by stay wire sensor (6), observing and controlling supervisory system (4) is processed and is stored for each signal, and monitored picture is transferred to display, display shows various data and curve, automatically forms test report simultaneously.
2. a kind of ultra-high pressure blasting detection method according to claim 1, is characterized in that, in step 5), described explosion test comprises the following steps:
1), water inlet and the water delivering orifice pipe of tested pipe fitting (7) are installed, water inlet tube interface is first installed after good seal, tested pipe fitting (7) water outlet pipe is not sealing completely first;
2), suppress test, first will be the limited Bas Discharged in tested pipe fitting (7), suppress a period of time, whether the water outlet of observing tested pipe fitting (7) has water to overflow, until water overflows continuously, stop suppressing, at this moment the water in tested pipe fitting (7) is discharged completely, water outlet pipe fit sealing; And
3), formally suppress, suppress the incipient stage, whether the interface that will pay close attention to the water inlet of tested pipe fitting (7) and water delivering orifice pipe and cut-off clack box the moment seals intact, if find that there is drainage, need to stop suppressing, manually after pressure release at once, the interface at the place of leaking is reinstalled, again suppress, after many experiments, until confirm that each sealing joint is intact; If there is no drainage, be sealing intact, just can suppress.
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| CN201210436965.6A CN103808476A (en) | 2012-11-06 | 2012-11-06 | Hyper-pressure explosion detection system |
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| CN201210436965.6A CN103808476A (en) | 2012-11-06 | 2012-11-06 | Hyper-pressure explosion detection system |
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| CN104807962A (en) * | 2015-04-21 | 2015-07-29 | 浙江科技学院 | Composite moveable real-time monitoring device for tunnel blasting gas and dust |
| CN104897471A (en) * | 2015-06-11 | 2015-09-09 | 北京隆盛泰科石油管科技有限公司 | Distribution structure of sensors on steel pipe and static hydraulic bursting test method adopting distribution structure |
| CN105954124A (en) * | 2016-04-20 | 2016-09-21 | 张家港市华尊宝特种材料科技有限公司 | Apparatus and detection method for high-pressure explosion of steel pipe in high or low temperature environment |
| CN106053242A (en) * | 2016-05-26 | 2016-10-26 | 麦格思维特(上海)流体工程有限公司 | Testing platform capable maintaining high pressure for long time and workpiece testing method |
| CN106368940A (en) * | 2016-09-29 | 2017-02-01 | 北京宇航系统工程研究所 | Pressurization system for piston pump and implementation method of pressurization system |
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| CN104807962A (en) * | 2015-04-21 | 2015-07-29 | 浙江科技学院 | Composite moveable real-time monitoring device for tunnel blasting gas and dust |
| CN104897471A (en) * | 2015-06-11 | 2015-09-09 | 北京隆盛泰科石油管科技有限公司 | Distribution structure of sensors on steel pipe and static hydraulic bursting test method adopting distribution structure |
| CN107014571A (en) * | 2016-01-15 | 2017-08-04 | 因特瑞驰开发公司 | The device of product heating is reduced in leak-testing |
| CN105954124A (en) * | 2016-04-20 | 2016-09-21 | 张家港市华尊宝特种材料科技有限公司 | Apparatus and detection method for high-pressure explosion of steel pipe in high or low temperature environment |
| CN106053242A (en) * | 2016-05-26 | 2016-10-26 | 麦格思维特(上海)流体工程有限公司 | Testing platform capable maintaining high pressure for long time and workpiece testing method |
| CN106368940A (en) * | 2016-09-29 | 2017-02-01 | 北京宇航系统工程研究所 | Pressurization system for piston pump and implementation method of pressurization system |
| CN109210273A (en) * | 2017-06-30 | 2019-01-15 | 中国二十冶集团有限公司 | The nonstandard tunnel synchronization rapid constructing method of more stepped heating furnace bodies |
| CN109655254A (en) * | 2019-02-22 | 2019-04-19 | 美钻深海能源科技研发（上海）有限公司 | A kind of equipment module bursting property detection method and device of subsea production tree |
| CN109655253A (en) * | 2019-02-22 | 2019-04-19 | 美钻深海能源科技研发（上海）有限公司 | A kind of equipment module yield pressure detection method and device of subsea production tree |
| DE202022105220U1 (en) | 2022-09-15 | 2022-09-28 | Biswaranjan Acharya | Accident and accident-free landmine detection system with artificial intelligence |
| CN115266388A (en) * | 2022-09-28 | 2022-11-01 | 江苏科标医学检测有限公司 | Vascular explosion tester and working method thereof |
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