CN103115965A - Device and method for detecting activity defects of gas cylinders of fixed fire extinguishing system - Google Patents
Device and method for detecting activity defects of gas cylinders of fixed fire extinguishing system Download PDFInfo
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- CN103115965A CN103115965A CN2013100726682A CN201310072668A CN103115965A CN 103115965 A CN103115965 A CN 103115965A CN 2013100726682 A CN2013100726682 A CN 2013100726682A CN 201310072668 A CN201310072668 A CN 201310072668A CN 103115965 A CN103115965 A CN 103115965A
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Abstract
The invention relates to a device and a method for detecting the activity defects of gas cylinders of a fixed fire extinguishing system; the method and the system are used for detecting the activity defects of the gas cylinders in the fixed fire extinguishing system in advance; all pressure nozzles in a loading system are respectively connected with all gas cylinder nozzles in a gas cylinder group by a hose; the upper part and the lower part of each gas cylinder are respectively provided with a sensor; and a signal output line of the sensor passes through a protection wall and is connected with a signal input end of an acoustic emission instrument. The device and the method have the advantages that 1, the activity defects of the gas cylinders can be effectively detected, and especially, the activity defects of a seamless gas cylinder which is used for storing gas throughout the year can be effectively detected, so that the bottle explosion phenomenon caused by the defects can be avoided; and 2, the detection is comprehensive, the reliability is high, and a leak detection area of each gas cylinder is avoided.
Description
Technical field
The present invention relates to a kind ofly can shift to an earlier date to the active defect existed in the fixed fire extinguishing system gas cylinder the active defect detecting device of detected fixed fire extinguishing system gas cylinder and detection method, belong to fixed fire extinguishing system gas cylinder pick-up unit and detection method and manufacture field.
Background technology
CN102323156A, title " a kind of CO
2flame snuffer gas cylinder free style hydraulic pressure test equipment ", comprise equipment body and equipment workspace, equipment body and equipment workspace are framed structure, control panel is housed on equipment body, the framework of equipment workspace is fixed on equipment body by turning axle, it is characterized in that, the base of frame of described equipment workspace is fixedly connected with jacking system, the top of the framework of equipment workspace is fixed with the oil cylinder locking device, the oil cylinder locking bottom of device is furnished with Special quick-adapter, oil cylinder locking device top is fixed with and rises pressure relief device, rise the other warning device that is provided with of pressure relief device, the oil cylinder locking device with rise pressure relief device and be connected by pipeline.Its weak point: this device for long-term gas storage after the active defect of seamless steel cylinder can't detect, cause the bottle explosion event inevitably to occur.
Summary of the invention
Purpose of design: avoid the weak point in background technology, design and a kind ofly can shift to an earlier date to the active defect existed in the fixed fire extinguishing system gas cylinder the active defect detecting device of detected fixed fire extinguishing system gas cylinder and detection method.
Design proposal: in order to realize above-mentioned purpose of design.1, adopting the acoustic reflection instrument as the stethoscopic design of gas cylinder, is one of technical characterictic of the present invention.The purpose of doing like this is: if the regional area stress in material is concentrated, the phenomenon that releases energy fast and produce Elastic wave is called acoustic emission or is called the stress wave emission, and distortion and the Crack Extension of material under effect of stress, it is the important mechanisms of structural failure, this direct source relevant with deformation and fracture mechanism, be called as acoustic emission source.The Non-Destructive Testing that the application utilizes " stress wave emission " to carry out, it can detect the active defect of gas cylinder effectively, because finally propagate from the elastic wave of acoustic emission source emission the surface that arrives material, cause the surface displacement that can survey with calibrate AE sensor, these detectors are converted to electric signal by the mechanical vibration of material, and then be exaggerated, processing and record, just can draw the whether active defect of tested gas cylinder.2, in loading system each pressurized nozzles respectively with each air bottle nozzle in the gas cylinder group between adopt flexible pipe to be connected design, be two of technical characterictic of the present invention.The purpose of doing like this is: because flexible pipe itself has the effect of noise reduction and slowly-releasing, so in the process of suppressing at gas cylinder, can avoid to greatest extent noise own to produce, avoid the interference to emission test.3, the upper and lower of gas cylinder is respectively equipped with the design of sensor probe, is three of technical characterictic of the present invention.The purpose of doing like this is: it can cover the All Ranges of gas cylinder, guarantees that there is not the generation of undetected phenomenon in gas cylinder in detection.4, the sensor signal output line, through protection wall and the design that the signal input part of acoustic emission instrument is connected, is four of technical characterictic of the present invention.The purpose of doing like this is: it can protect testing staff's life security effectively.5, being provided with the design that surge tank and slow tank volume are greater than gas cylinder volume in loading system between pressuring pump and gas cylinder, is five of technical characterictic of the present invention.The purpose of doing like this is: it can make the gas cylinder loading boost steadily, avoids the generation of mass-flow impulsive sound, guarantees to detect quality.
Technical scheme 1: a kind of fixed fire extinguishing system gas cylinder pick-up unit; in loading system, each pressurized nozzles adopts flexible pipe to be connected respectively with between each air bottle nozzle in the gas cylinder group; the upper and lower of gas cylinder is respectively equipped with sensor, and the sensor signal output line is connected with the signal input part of acoustic emission instrument through the protection wall.
Technical scheme 2: a kind of detection method of fixed fire extinguishing system gas cylinder pick-up unit, (1) four gas cylinder is a gas cylinder group, the top of each gas cylinder, bottom polishing make to expose metallic luster, and metallic luster section coats vacuum grease No. three, upper and lower sensor probe touches with the metallic luster section of gas cylinder mutually by No. three vacuum greases respectively; (2) load for the first time test: loading velocity is 2MPa/min, at first boosts to nominal engineering pressure 17.5 MPa, and pressurize 3min continues to suppress 1.5 times of engineering pressure i.e. 26.25 MPa, then pressurize 3min; (3) load for the second time test: at first storage pressure is unloaded and be pressed onto 17.5 MPa, load for the second time again, loading velocity is 2MPa/min, on-load pressure is greater than 25 MPa, while being less than 26.25 MPa, pressurize 3min, continue to suppress 1.5 times of engineering pressure i.e. 26.25 MPa, then after pressurize 3min, release, the acoustic emission instrument can show whether tested gas cylinder exists the data of active defect, completes one group of gas cylinder test.
The present invention compares with background technology, and the one, can effectively detect the active defect of gas cylinder, particularly the active defect of seamless gas cylinder after gas storage throughout the year, avoided the bottle explosion phenomenon caused thus; The 2nd, detection is comprehensive, reliability is high, and the undetected zone of gas cylinder can not occur.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the active defect detecting device of fixed fire extinguishing system gas cylinder.
Fig. 2 is Fig. 1 loading procedure coordinate schematic diagram.
Embodiment
Embodiment 1: with reference to accompanying drawing 1.A kind of fixed fire extinguishing system gas cylinder pick-up unit; in loading system 1, each pressurized nozzles adopts flexible pipe to be connected respectively with between each air bottle nozzle in gas cylinder group 2; the upper and lower of gas cylinder 2 is respectively equipped with sensor 3, and sensor 3 output lines are connected with the signal input part of acoustic emission instrument 5 through protection wall 4.Described sensor 3(spy) head touches mutually with (metal) bare spots of gas cylinder 2.2 four of described gas cylinder groups are one group.Described acoustic emission instrument 5 ground wires.
Embodiment 2: on the basis of embodiment 1, between the bare metal dew point of described sensor 3 probes and gas cylinder 2, adopt No. three vacuum greases as couplant.
Embodiment 3: on the basis of embodiment 1, be provided with surge tank between pressuring pump and gas cylinder in described loading system (1) and slow tank volume is greater than gas cylinder volume.
Embodiment 4: on the basis of embodiment 1, described gas cylinder bottom is lined with packing.
Embodiment 5: on the basis of embodiment 1, with reference to accompanying drawing 2.A kind of detection method of fixed fire extinguishing system gas cylinder pick-up unit, (1) four gas cylinder is a gas cylinder group 2, the top of each gas cylinder, bottom polishing make to expose metallic luster, and metallic luster section coats vacuum grease No. three, upper lower sensor 3 probes touch with the metallic luster section of gas cylinder mutually by No. three vacuum greases respectively; Coupling situation and the sensitivity test of test probe; The testing background noise; The velocity of sound in the test gas cylinder; The test position fix precision; (2) load for the first time test: loading velocity is 2MPa/min, at first boosts to nominal engineering pressure 17.5 MPa, and pressurize 3min continues to suppress 1.5 times of engineering pressure i.e. 26.25 MPa, then pressurize 3min; (3) load for the second time test: at first storage pressure is unloaded and be pressed onto 17.5 MPa, load for the second time again, loading velocity is 2MPa/min, on-load pressure is greater than 25 MPa, while being less than 26.25 MPa, pressurize 3min, continue to suppress 1.5 times of engineering pressure i.e. 26.25 MPa, then after pressurize 3min, release, the acoustic emission instrument can show whether tested gas cylinder exists the data of active defect, completes one group of gas cylinder test.Described four gas cylinders boost, step-down, to suppress speed consistent.
Need to understand: although above-described embodiment is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; rather than to the restriction of mentality of designing of the present invention; any combination, increase or modification that does not exceed mentality of designing of the present invention, all fall within the scope of protection of the present invention.
Claims (9)
1. a fixed fire extinguishing system gas cylinder pick-up unit; it is characterized in that: in loading system (1), each pressurized nozzles adopts flexible pipe to be connected respectively with between each air bottle nozzle in gas cylinder group (2); the upper and lower of gas cylinder (2) is respectively equipped with sensor (3), and sensor (3) output line is connected with the signal input part of acoustic emission instrument (5) through protection wall (4).
2. fixed fire extinguishing system gas cylinder pick-up unit according to claim 1 is characterized in that: described sensor (3) head is tactile mutually with the bare spots of gas cylinder (2).
3. fixed fire extinguishing system gas cylinder pick-up unit according to claim 2, is characterized in that: between the bare spots of described sensor (3) head and gas cylinder (2), adopt No. three vacuum greases as couplant.
4. fixed fire extinguishing system gas cylinder pick-up unit according to claim 1, it is characterized in that: (2) four of described gas cylinder groups are one group.
5. fixed fire extinguishing system gas cylinder pick-up unit according to claim 1 is characterized in that: be provided with surge tank between pressuring pump and gas cylinder in described loading system (1) and slow tank volume is greater than gas cylinder volume.
6. fixed fire extinguishing system gas cylinder pick-up unit according to claim 1, is characterized in that: be lined with packing bottom described gas cylinder.
7. fixed fire extinguishing system gas cylinder pick-up unit according to claim 1, is characterized in that: described acoustic emission instrument (5) ground wire.
8. the detection method of a fixed fire extinguishing system gas cylinder pick-up unit is characterized in that:
(1) four gas cylinder is a gas cylinder group (2), and the polishing of the top of each gas cylinder, bottom makes to expose metallic luster, and metallic luster section coats vacuum grease No. three, and upper lower sensor (3) probe is tactile mutually with the metallic luster section of gas cylinder by No. three vacuum greases respectively;
(2) load for the first time test: loading velocity is 2MPa/min, at first boosts to nominal engineering pressure 17.5 MPa, and pressurize 3min continues to suppress 1.5 times of engineering pressure i.e. 26.25 MPa, then pressurize 3min;
(3) load for the second time test: at first storage pressure is unloaded and be pressed onto 17.5 MPa, load for the second time again, loading velocity is 2MPa/min, on-load pressure is greater than 25 MPa, while being less than 26.25 MPa, pressurize 3min, continue to suppress 1.5 times of engineering pressure i.e. 26.25 MPa, then after pressurize 3min, release, the acoustic emission instrument can show whether tested gas cylinder exists the data of active defect, completes one group of gas cylinder test.
9. the detection method of fixed fire extinguishing system gas cylinder pick-up unit according to claim 8 is characterized in that: described four gas cylinders boost, step-down, to suppress speed consistent.
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| CN201310072668.2A CN103115965B (en) | 2013-03-07 | 2013-03-07 | Fixed fire extinguishing system gas cylinder active defects pick-up unit and detection method |
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| CN201310072668.2A CN103115965B (en) | 2013-03-07 | 2013-03-07 | Fixed fire extinguishing system gas cylinder active defects pick-up unit and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106855494A (en) * | 2015-12-08 | 2017-06-16 | 中国石油化工股份有限公司 | A kind of storage tank bottom plate acoustic emission detection system |
| CN107796873A (en) * | 2017-12-07 | 2018-03-13 | 中国人民武装警察部队学院 | It is a kind of to be sprayed fire extinguisher verifying attachment for fire control acceptance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106855494A (en) * | 2015-12-08 | 2017-06-16 | 中国石油化工股份有限公司 | A kind of storage tank bottom plate acoustic emission detection system |
| CN107796873A (en) * | 2017-12-07 | 2018-03-13 | 中国人民武装警察部队学院 | It is a kind of to be sprayed fire extinguisher verifying attachment for fire control acceptance |
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