CN202938025U - Gas leakage detection device - Google Patents
Gas leakage detection device Download PDFInfo
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- CN202938025U CN202938025U CN 201220677887 CN201220677887U CN202938025U CN 202938025 U CN202938025 U CN 202938025U CN 201220677887 CN201220677887 CN 201220677887 CN 201220677887 U CN201220677887 U CN 201220677887U CN 202938025 U CN202938025 U CN 202938025U
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Abstract
The utility model discloses a gas leakage detection device which comprises a detection pipe and a pressure monitoring device. The detection pipe is sleeved on the periphery of a pipe to be detected. The inner diameter of the detection pipe is larger than the outer diameter of the pipe to be detected. A hollow cavity is formed between the detection pipe and the pipe to be detected. Blocking objects are arranged at two ends of the hollow cavity. Detection gas is filled in the hollow cavity. Pressure of the detection gas is between atmospheric pressure and pressure of gas inside the pipe to be detected, and the pressure monitoring device is arranged on the detection pipe and monitors parameters of pressure inside the hollow cavity. The detection gas is filled in the sealed hollow cavity formed by the detection pipe, the pipe to be detected and the blocking objects so that pressure difference is ensured. The pressure monitoring device detects changes of pressure of detection gas so as to judge whether a pipeline leaks gas. According to the detection device, no holes need punching on a pipeline to be detected so that the pipe to be detected can not be damaged. If the pipe to be detected leaks air, the closed detection pipe can prevent gas of the pipe to be detected from diffusing.
Description
Technical field
The utility model relates to the pipeline Leakage Gas field detected, and particularly relates to a kind of gas leak detection apparatus.
Background technique
The Leakage Gas detection technique is referred to as again gas tightness detection technique or gas leak test technology, pneumatic-typed leak detecting commonly used is to measure according to the variation of gaseous state parameter in workpiece, measured piece is sealed, be filled with dry pressurized air, after reaching the pressure of regulation, in measuring workpieces, the variable quantity of gas pressure parameter, by pressure transducer, measure a kind of method of the leakage situation of gas.
According to the difference of detection mode, the pneumatic-typed leak detecting can be divided into two kinds of direct press type leak detection and differential pressure leak detections.The direct press type Leakage Gas detects and refers to that pressure transducer directly is connected with measured piece, judges by the variation of testing measured piece internal pressure parameter a kind of detecting method whether workpiece leaks.Differential pressure type Leakage Gas testing process and direct press type detecting method are similar, and difference is in and has added a canonical reference spare in differential pressure method in measuring system, uses the differential pressure transducer image data, records the change value of pressure between measuring phases measuring piece and reference member.
But, when pneumatic-typed leak detecting commonly used is measured, need to connect by perforate on tested test tube and tested pipeline, can destroy tested pipeline; When pipeline leaks gas, can not prevent the diffusion of gas.
Summary of the invention
Based on this, can not prevent that the problem of gas diffusion from providing a kind of gas leak detection apparatus in the time of can destroying tested pipeline, Leakage Gas when being necessary for leak detection.
A kind of gas leak detection apparatus, comprise detecting tube and pressure monitoring device, described detecting tube is sheathed on the periphery of tested test tube, and described detecting tube internal diameter is greater than described tested test tube external diameter, form cavity between described detecting tube and described tested test tube, the two ends of described cavity are provided with plug, are filled with detection gas in described cavity, and described detection gas pressure is in atmospheric pressure and tested test tube between gas pressure; Described pressure monitoring device is set, the pressure parameter in described pressure monitoring device monitoring cavity on described detecting tube.Be filled with detection gas in the closed cavity that described detecting tube, tested test tube and plug form, guarantee that detection gas in closed cavity is in atmospheric pressure and tested test tube between gas pressure; Monitor by pressure monitoring device the pressure that detects gas in cavity and change, judge whether pipeline leaks gas, it is large that force value becomes, and tested test tube gas leakage is described, force value diminishes, and detecting tube gas leakage is described, realizes two-way judgement; During gas leakage, described pressure monitoring device is made prompting.Described detection device does not need to punch on tested pipeline, can not destroy tested test tube; Simultaneously, if the gas leakage of tested test tube, airtight detecting tube can prevent tested test tube gas diffusion.
In embodiment, be provided with dunnage between described tested test tube and detecting tube therein.Described dunnage plays the effect of supporting described detecting tube, and the position of described detecting tube and tested test tube is fixed.
In embodiment, the detection gas pressure in described cavity is P=P therein
0+ (P
i-P
0) * 0.4 is to P=P
0+ (P
i-P
0) * 0.6, described P represents to detect gas pressure, P
0The expression atmospheric pressure, P
iRepresent the gas pressure in tested test tube.Because the gas pressure in tested test tube is inevitable greater than atmospheric pressure, so, according to P=P
0+ (P
i-P
0) * 0.4 is to P=P
0+ (P
i-P
0The detection gas pressure that) * 0.6 obtains both guaranteed greater than atmospheric pressure, the multiple relation of gas pressure in clear and definite again and tested test tube.Be when detecting tube leaks gas greater than atmospheric pressure, guarantee that air can not enter into pipe interior, work the mischief, simultaneously, do not allow the air impact checkout value, raise in order to avoid detecting tube internal pressure value occurs, but the leak free situation of tested test tube; The pressure that detects gas in cavity is P=P
0+ (P
i-P
0) * 0.4 is to P=P
0+ (P
i-P
0) * 0.6 is to guarantee detect gas and can not enter tested test tube, and the gas in tested test tube to be easy to leak in detecting tube when the gas leakage of tested test tube, makes the pressure monitoring device that is arranged on detecting tube can be easily and the variation of gas pressure accurately detected.
In embodiment, described detection gas is nontoxic non-combustible gas therein.Nontoxic non-combustible gas has guaranteed the Security of detection device as second protection gas.
In embodiment, the outer tube wall of described detecting tube is provided with pressure gauge therein.Described pressure gauge can show the force value in detecting tube, to help the secondary verification, improves the accuracy that detects.
In embodiment, described tested test tube is provided with a plurality of valves therein, and described detecting tube segmentation is sheathed on tested test tube between adjacent described valve.By throttle down, can realize on-bne repair, reduce workload and the operating cost of inspection and maintenance, described detecting tube segmentation is sheathed on described tested test tube, in order to accurately locate leak, and can effectively avoid the situation that the whole piece pipeline is stopped transport occurring when maintenance, improve reliability.
In embodiment, it also comprises sealed pipe therein, and described sealed tube is located at the periphery of detecting tube, and described detecting tube and plug are connected.Adopt the sealed pipe described detecting tube of sealing and plug, lower to technological requirement, convenient construction.
In embodiment, described detecting tube is provided with inflator therein, and described sealed pipe or described detecting tube are provided with means of deflation.Described inflator is that described detecting tube is filled with detection gas, guarantees that the air pressure of detection gas is kept stable; Described means of deflation can carry out gas displacement with described inflator, when pipe leakage, when being in inspecting state, first reveals gas with the gas displacement in detecting tube; With the gas emptying in detecting tube, begin maintenance again; Complete when pipeline maintenance, enter running state, with the gas displacement air in detecting tube, when preventing from revealing, flammable explosive gas mixes with air, blasts.
In embodiment, described means of deflation and inflator are equipped with separating valve therein.Separating valve on described inflator guarantees that gas can not spill by inflator when not needing to inflate to confined space; After described means of deflation guaranteed that its body displacement is completed, gas can not spill from means of deflation.
The utility model compared with prior art has following beneficial effect:
The utility model gas leak detection apparatus is filled with detection gas in the closed cavity that described detecting tube, tested test tube and plug form, the pressure difference of gas in the detection gas in the assurance closed cavity and tested test tube; Monitor by pressure monitoring device the pressure that detects gas and change, judge whether pipeline leaks gas, it is large that force value becomes, and tested test tube gas leakage is described, force value diminishes, and detecting tube gas leakage is described, realizes two-way judgement; During gas leakage, described pressure monitoring device is made prompting.Described detection device does not need to punch on tested pipeline, can not destroy tested test tube; Simultaneously, if the gas leakage of tested test tube, airtight detecting tube can prevent that tested test tube because of gas diffusion Occurrence, is suitable for narrow space, is not easy to detect the aggregation zone of gas and easy gas leakage.
Description of drawings
Fig. 1 is the utility model Leakage Gas monitoring device schematic diagram;
Fig. 2 is the tested test tube of the utility model Leakage Gas monitoring device and detecting tube double-skin duct schematic diagram;
Fig. 3 is the tested test tube of the utility model Leakage Gas monitoring device and detecting tube double-skin duct sectional view;
Fig. 4 is the utility model Leakage Gas monitoring device detecting tube shutoff schematic diagram;
Fig. 5 is the utility model Leakage Gas monitoring device 90 degree bend pipe schematic diagram;
Fig. 6 is the utility model Leakage Gas monitoring device 45 degree bend pipe schematic diagram;
Fig. 7 is the utility model Leakage Gas monitoring device threeway schematic diagram.
Embodiment
As shown in Figure 1, a kind of gas leak detection apparatus, whether detect detected 10 pipes leaks, comprise detecting tube 11 and pressure monitoring device 112, described detecting tube 11 is sheathed on the periphery of described tested test tube 10, and described detecting tube 11 internal diameters form cavity greater than described tested test tube 10 external diameters between described detecting tube 11 and described tested test tube 10, be provided with plug 110 at the two ends of described cavity, be filled with detection gas in described cavity.The gas pressure that is filled with in the closed chamber that described cavity and plug 110 form is less than the gas pressure in tested test tube 10, when tested test tube 10 gas leakage, make the gas in tested test tube 10 can leak in closed chamber, be convenient to detect, and, detect gas and can not enter in tested test tube 10, in order to avoid have an accident because gas mixes; Simultaneously, detect gas greater than atmospheric pressure, when occurring that detecting tube 11 leaks or described tested test tube 10 and detecting tube 11 when leaking simultaneously, the situation of flase drop can not occur.Described pressure monitoring device 112 is set on described detecting tube 11, by the gas pressure parameter in described pressure monitoring device 112 monitoring closed chamber, pressure parameter by described pressure monitoring device 112 judges whether tested test tube 10 leaks gas, it is large that force value becomes, tested test tube 10 gas leakage are described, force value diminishes, and detecting tube 11 gas leakage are described, realizes two-way judgement; When leaking, pressure monitoring device 112 can be made prompting.
Wherein, described pressure monitoring device 112 can comprise pressure inductor and pressure signal transmitter, detection gas pressure in described pressure inductor induction cavity, described pressure signal transmitter can transmit pressure signal that described pressure inductor senses to the remote centralized control station, described remote centralized control station can read the represented force value of described pressure signal, and can judge whether according to the variation of force value to leak, if leak, send alarm.Described remote centralized control station can be the concentrated of a plurality of pressure monitoring devices 112 on tested pipeline 10, can carry out remote monitoring to the force value of a plurality of pressure monitoring devices 112.
The air pressure size of described detection gas is specifically as follows: detect gas pressure=barometric pressure+(gas pressure-barometric pressure in tested test tube) * 0.4 to the arbitrary value that detects between gas pressure=barometric pressure+(gas pressure-barometric pressure in tested test tube) * 0.6.
Described detecting tube 11 is sheathed on the detection device on described tested test tube 10, realizes indirectly measuring, need to perforate on tested tested test tube 10, can not destroy tested test tube 10; Simultaneously, formed airtight cavity in tested test tube 10 peripheries, as tested test tube 10 gas leakage, described detecting tube 11 can prevent within the regular hour that also the gas of tested test tube 10 is diffused into external environment condition.
As shown in Figure 2 and Figure 3, between described tested test tube 10 and detecting tube 11, dunnage 12 can be set, described dunnage 12 is the platy structure that axially arranges along tested test tube 10, described dunnage 12 1 sides are welded on described tested test tube 10 outer walls, opposite side contacts with sheathed detecting tube 11 thereon, support described detecting tube 11, make tested test tube 10 and detecting tube 11 form the double walled ducting form of donut; The described mode that dunnage 12 axially is set can not affect flowing of the interior gas of cavity, can not affect testing result; The spacing of described dunnage 12 can be 2 meters, in the situation that 2 meters of less thaies, support interval can shorten.
The pressure of the interior detection gas of described detecting tube 11 is in described tested test tube 10 0.4 ~ 0.6 times of gas pressure and greater than atmospheric pressure.Be when detecting tube 11 gas leakage greater than atmospheric pressure, guarantee that air can not enter into pipe interior, work the mischief, simultaneously, do not allow the air impact checkout value, raise in order to avoid detecting tube 11 internal pressure values occur, but the leak free situation of tested test tube 10; The pressure of the interior detection gas of detecting tube 11 is that in tested test tube 10,0.4 ~ 0.6 times of gas pressure is to guarantee when tested test tube 10 gas leakage, detection gas in detecting tube 11 can not enter tested test tube 10, and tested test tube 10 gases are easy to leak in detecting tube 11, make the pressure monitoring device 112 that is arranged on detecting tube 11 can be easily and the variation of gas pressure accurately detected.Gas in described detecting tube 11 can be nitrogen, inert gas or other nontoxic non-combustible gas, as second protection gas, on the one hand when tested test tube 10 has the leakage situation, Leakage Gas in tested test tube 10 is in detecting tube 11, mix with described second protection gas, can not cause blast or other accidents yet, guarantee the Security of detection device; Be on the other hand when detecting tube 11 has the leakage situation, even the second protection gas in detecting tube 11 leaks in external environment condition, also can not work the mischief to surrounding environment and human body etc.
As shown in Figure 1, be provided with inflator 111 on described detecting tube outer tube wall, be filled with shielding gas in the cavity that can form with tested test tube 10 from described inflator 111 to described detecting tube 11, guarantee certain pressure difference.As shown in Figure 2, the inflator access point 1110 on described inflator 111 described detecting tube 11 tube walls of access, described pressure monitoring device 112 is arranged on described detecting tube 11 tube walls, is convenient to the variation of detected pressures value.Wherein, be provided with separating valve 114 on the pipeline of described inflator 111, control and whether inflate in confined space.
In the present embodiment, described plug 110 and detecting tube 11 welding make between detecting tube 11 and tested test tube 10 and form confined space; As shown in Figure 4, described plug 110 can be that end pipe 1100 is set on tested test tube 10 outer walls, described end pipe 1100 two ends are welded on respectively on described tested test tube 10 tube walls and described detecting tube 11, make between detecting tube 11 and tested test tube 10 and form confined space.Perhaps, when construction when not convenient, described detecting tube 11 and end pipe 1100 all by and 13 welding of same sealed pipe reach the purpose of formation confined space between detecting tube 11 and tested test tube 10.
Outer tube wall at described detecting tube 11 can arrange pressure gauge, and described pressure gauge can show the force value in detecting tube 11, and the variation of the force value that record by pressure gauge can realize secondary verification on the spot, improves the accuracy of monitoring.
When described pressure monitoring device 112 detects the force value rising of detecting tube 11 interior gases or reduces, illustrate that tested test tube 10 or detecting tube 11 have leakage, described pressure monitoring device 112 can be sent to the pressure signal that records the remote centralized monitoring station, realize online the detection and Real Time Monitoring, and, also can on described pressure monitoring device, alarm mechanism be installed, change alarm in force value, process to remind the related personnel.When described gas leak detection apparatus operation, raise if detect gas atmosphere, show that there is leakage in tested gas pipeline; If reduce otherwise detect gas atmosphere, show that there is leakage in outside seal pipe 13; Realized the two-way detection to testing conduit and tested pipeline.
As shown in Figure 1, be provided with a plurality of valves 100 on described tested test tube 10, a plurality of described valves 100 all are arranged on convenient operation and leak the zone that is difficult for having an accident.Wherein, the gas communication in the tested test tube 10 between two valves 100 of adjacent two valves, 100 controls.Described end pipe 1100 is skipped described valve 100, is welded on described detecting tube 11, and namely described valve 100 is not included in the space of described detecting tube 11 shutoff.Close a certain section upper two adjacent valves 100 of tested test tube 10, can carry out easily on-bne repair to the tested test tube 10 of throttle down 100 and safeguard; Segmentation detects can locate rapidly the leakage pipeline section, prevents security incident; On-bne repair can reduce workload and the operating cost of repair and maintenance, and economic benefit is high.
When certain segment pipe being detected Leakage Gas arranged, need certain maintenance measure, can on described sealed pipe 13 or on detecting tube 11, means of deflation 113 be set, by described means of deflation access point 1130 access pipelines.Described means of deflation 113 can carry out gas displacement with described inflator 111, but and described means of deflation 113 and the equal site layout project of inflator 111; When pipe leakage, when being in inspecting state, first reveal gas with the gas displacement in detecting tube 11; With the gas emptying in detecting tube 11, begin maintenance again; Complete when pipeline maintenance, enter running state, the detection gas displacement air with in detecting tube 11 prevents that the explosion hazard gases of revealing from mixing with air, blasts.Also be provided with flame trap 115 and separating valve 114 on described means of deflation 113, described flame trap 115 prevents that external flame from scurrying in the equipment that has flammable explosive gas, pipeline or stoping flame to spread at equipment, pipeline enclosure; Whether described separating valve 114 is controlled and is exitted.Wherein, described means of deflation 113 can be exhaust stack.
In general, tested pipeline can not be all straight tube, must have bend pipe, threeway, pass through road, pass through the various situations such as wall, particularly in pipe bent position, threeway place of tested pipeline or need to pass through road, when passing through wall etc. and locating, it is even more important that Leakage Gas detects, and be also general detection device the place that can not better measure.Described detecting tube 11 is sheathed on the gas leak detection apparatus of described tested test tube 10, takes different mounting types in straight tube, bend pipe and threeway place.Means of fixation for the dunnage 12 between tested test tube 10, detecting tube 11 and described tested test tube 10 and detecting tube 11 is: first dunnage 12 is welded on the outer wall of described tested test tube 10, then is inserted in detecting tube 11; When the pipeline of different sections connects, first connect tested test tube 10, then connect detecting tube 11.
As shown in Figure 2, when pipeline is straight tube, detecting tube 11 directly can be sheathed on described tested test tube 10 of having welded dunnage 12, described welding manner can be spot welding; As extremely shown in Figure 7 in Fig. 5, be respectively pipeline at the schematic diagram of 90 degree bend pipes, 45 degree bend pipes and threeway place, the place that is different from straight tube in the bend pipe of pipeline or threeway etc., bend pipe or the threeway of the detecting tube 11 made according to working drawing paper can be cut open vertically, put into bend pipe or the threeway of described tested test tube 10, then detecting tube 11 butt welding that will cut open get final product.Adopt the mode of welding that detecting tube 11 is resealed, prevent that the situation of Leakage Gas from appearring in detecting tube 11, realized at the effective installation detecting device in the place of complexity and detected the leakage situation of pipeline gas.Wherein, argon arc welding is all adopted in described welding.
Comprise mainly that for the power station project hydrogen gas leakage detects and natural gas leaking detects.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. gas leak detection apparatus, it is characterized in that, comprise detecting tube and pressure monitoring device, described detecting tube is sheathed on the periphery of tested test tube, and described detecting tube internal diameter forms cavity greater than described tested test tube external diameter between described detecting tube and described tested test tube, and the two ends of described cavity are provided with plug, be filled with detection gas in described cavity, described detection gas pressure is in atmospheric pressure and tested test tube between gas pressure; Described pressure monitoring device is set, the pressure parameter in described pressure monitoring device monitoring cavity on described detecting tube.
2. gas leak detection apparatus according to claim 1, is characterized in that, is provided with dunnage between described tested test tube and detecting tube.
3. gas leak detection apparatus according to claim 1, is characterized in that, the detection gas pressure in described cavity is P=P
0+ (P
i-P
0) * 0.4 is to P=P
0+ (P
i-P
0) * 0.6, described P represents to detect gas pressure, P
0The expression atmospheric pressure, P
iRepresent the gas pressure in tested test tube.
4. gas leak detection apparatus according to claim 3, is characterized in that, described detection gas is nontoxic non-combustible gas.
5. gas leak detection apparatus according to claim 3, is characterized in that, the outer tube wall of described detecting tube is provided with pressure gauge.
6. gas leak detection apparatus according to claim 3, is characterized in that, described tested test tube is provided with a plurality of valves, and described detecting tube segmentation is sheathed on tested test tube between adjacent described valve.
7. gas leak detection apparatus according to claim 5, is characterized in that, it also comprises sealed pipe, and described sealed tube is located at the periphery of detecting tube, and described detecting tube and plug are connected.
8. gas leak detection apparatus according to claim 7, is characterized in that, described detecting tube is provided with inflator, and described sealed pipe or described detecting tube are provided with means of deflation.
9. gas leak detection apparatus according to claim 8, is characterized in that, described means of deflation and inflator are equipped with separating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677887 CN202938025U (en) | 2012-12-10 | 2012-12-10 | Gas leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220677887 CN202938025U (en) | 2012-12-10 | 2012-12-10 | Gas leakage detection device |
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| Publication Number | Publication Date |
|---|---|
| CN202938025U true CN202938025U (en) | 2013-05-15 |
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| CN 201220677887 Expired - Fee Related CN202938025U (en) | 2012-12-10 | 2012-12-10 | Gas leakage detection device |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913278A (en) * | 2014-03-08 | 2014-07-09 | 陈金高 | Pipe connector water leakage sensing detection device |
| CN105736953A (en) * | 2016-04-22 | 2016-07-06 | 中国计量大学 | Pressure sensing based liquid ammonia pipeline leak detection system with cladding layer and detection method |
| CN104500981B (en) * | 2014-10-20 | 2017-02-15 | 成都创源油气技术开发有限公司 | Natural gas pipe detecting tool |
| CN107218512A (en) * | 2017-07-31 | 2017-09-29 | 西安科技大学 | A kind of mining liquid carbon dioxide conveying device and its leakage monitoring method |
| CN108050374A (en) * | 2017-12-25 | 2018-05-18 | 上海新奥新能源技术有限公司 | A kind of storage tank and LNG air supply systems |
| CN108561757A (en) * | 2018-03-19 | 2018-09-21 | 创尔特热能科技(中山)有限公司 | Parameter setting method of gas leakage detection device |
| CN108827560A (en) * | 2018-05-04 | 2018-11-16 | 中国核电工程有限公司 | A kind of detection method of double-walled inside pipe wall damage location |
| CN110118309A (en) * | 2019-06-13 | 2019-08-13 | 新天绿色能源股份有限公司 | A kind of Monitoring Pinpelines device |
| CN110486629A (en) * | 2019-08-15 | 2019-11-22 | 上海中船三井造船柴油机有限公司 | Air-tightness detection device and method for double fuel host gas pipeline |
| CN110822295A (en) * | 2018-08-14 | 2020-02-21 | 中国石油化工股份有限公司 | Method for gathering, transporting, protecting and monitoring and controlling leakage of poisonous and harmful gas |
| CN111412332A (en) * | 2020-03-27 | 2020-07-14 | 芜湖职业技术学院 | Indoor assembled gas connected system |
| CN112635801A (en) * | 2020-12-24 | 2021-04-09 | 北京理工大学 | Hydrogen leakage monitoring system for hydrogen-oxygen fuel cell |
| CN112687925A (en) * | 2020-12-28 | 2021-04-20 | 北京理工大学 | Safety monitoring system for fuel cell |
| CN113358299A (en) * | 2021-05-13 | 2021-09-07 | 武汉钢铁有限公司 | Rapid detection method for breakage of radiant tube of cold rolling continuous annealing furnace |
| CN113432040A (en) * | 2021-06-22 | 2021-09-24 | 中国舰船研究设计中心 | Double-layer air supply pipeline system of submersible fuel cell |
| CN113758656A (en) * | 2020-06-03 | 2021-12-07 | 中国石油天然气股份有限公司 | Double-hollow rod capable of checking leakage and leakage checking method of double-hollow rod |
| CN114279635A (en) * | 2021-11-23 | 2022-04-05 | 三一海洋重工有限公司 | Exhaust pipe air leakage detection device and stacking machine |
| CN115743582A (en) * | 2022-11-08 | 2023-03-07 | 中国航空油料有限责任公司山东分公司 | Convenient detection and leakage repair's oil level ground bolt well |
-
2012
- 2012-12-10 CN CN 201220677887 patent/CN202938025U/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913278A (en) * | 2014-03-08 | 2014-07-09 | 陈金高 | Pipe connector water leakage sensing detection device |
| CN104500981B (en) * | 2014-10-20 | 2017-02-15 | 成都创源油气技术开发有限公司 | Natural gas pipe detecting tool |
| CN105736953A (en) * | 2016-04-22 | 2016-07-06 | 中国计量大学 | Pressure sensing based liquid ammonia pipeline leak detection system with cladding layer and detection method |
| CN105736953B (en) * | 2016-04-22 | 2017-10-10 | 中国计量大学 | A kind of the liquefied ammonia pipeline leakage checking system with clad and its method based on pressure sensitive |
| CN107218512A (en) * | 2017-07-31 | 2017-09-29 | 西安科技大学 | A kind of mining liquid carbon dioxide conveying device and its leakage monitoring method |
| CN108050374A (en) * | 2017-12-25 | 2018-05-18 | 上海新奥新能源技术有限公司 | A kind of storage tank and LNG air supply systems |
| CN108561757A (en) * | 2018-03-19 | 2018-09-21 | 创尔特热能科技(中山)有限公司 | Parameter setting method of gas leakage detection device |
| CN108827560A (en) * | 2018-05-04 | 2018-11-16 | 中国核电工程有限公司 | A kind of detection method of double-walled inside pipe wall damage location |
| CN108827560B (en) * | 2018-05-04 | 2021-06-18 | 中国核电工程有限公司 | Method for detecting damage position of inner wall of double-wall pipe |
| CN110822295A (en) * | 2018-08-14 | 2020-02-21 | 中国石油化工股份有限公司 | Method for gathering, transporting, protecting and monitoring and controlling leakage of poisonous and harmful gas |
| CN110118309A (en) * | 2019-06-13 | 2019-08-13 | 新天绿色能源股份有限公司 | A kind of Monitoring Pinpelines device |
| CN110486629A (en) * | 2019-08-15 | 2019-11-22 | 上海中船三井造船柴油机有限公司 | Air-tightness detection device and method for double fuel host gas pipeline |
| CN111412332A (en) * | 2020-03-27 | 2020-07-14 | 芜湖职业技术学院 | Indoor assembled gas connected system |
| CN113758656A (en) * | 2020-06-03 | 2021-12-07 | 中国石油天然气股份有限公司 | Double-hollow rod capable of checking leakage and leakage checking method of double-hollow rod |
| CN113758656B (en) * | 2020-06-03 | 2024-01-30 | 中国石油天然气股份有限公司 | Double-hollow rod capable of detecting leakage and leakage detecting method of double-hollow rod |
| CN112635801A (en) * | 2020-12-24 | 2021-04-09 | 北京理工大学 | Hydrogen leakage monitoring system for hydrogen-oxygen fuel cell |
| CN112687925A (en) * | 2020-12-28 | 2021-04-20 | 北京理工大学 | Safety monitoring system for fuel cell |
| CN112687925B (en) * | 2020-12-28 | 2022-04-29 | 北京理工大学 | Safety monitoring system for fuel cell |
| CN113358299A (en) * | 2021-05-13 | 2021-09-07 | 武汉钢铁有限公司 | Rapid detection method for breakage of radiant tube of cold rolling continuous annealing furnace |
| CN113432040A (en) * | 2021-06-22 | 2021-09-24 | 中国舰船研究设计中心 | Double-layer air supply pipeline system of submersible fuel cell |
| CN114279635A (en) * | 2021-11-23 | 2022-04-05 | 三一海洋重工有限公司 | Exhaust pipe air leakage detection device and stacking machine |
| CN115743582A (en) * | 2022-11-08 | 2023-03-07 | 中国航空油料有限责任公司山东分公司 | Convenient detection and leakage repair's oil level ground bolt well |
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