CN113916309A - Air leakage detection device for ship and use method thereof - Google Patents
Air leakage detection device for ship and use method thereof Download PDFInfo
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- CN113916309A CN113916309A CN202111297137.4A CN202111297137A CN113916309A CN 113916309 A CN113916309 A CN 113916309A CN 202111297137 A CN202111297137 A CN 202111297137A CN 113916309 A CN113916309 A CN 113916309A
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- fan
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
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Abstract
The invention relates to the technical field of ship detection, in particular to a ship air leakage detection device and a using method thereof. During the use, the fan passes through first venturi and inputs certain gas quantity to the input of the cabin of awaiting measuring, and gas is from the cabin of awaiting measuring output back, turns into digital signal through pressure differential transducer and signal converter, handles the data and the signal of input gas quantity through the signal processing subassembly, obtains the gas flow difference value of the cabin both ends of awaiting measuring promptly and awaits measuring the air leakage of the cabin of awaiting measuring promptly, even also can obtain accurate air leakage under the micropressure condition, has avoided the unable circumstances that detects of conventional air leakage detection device.
Description
Technical Field
The invention relates to the technical field of ship detection, in particular to a ship air leakage detection device and a using method thereof.
Background
In the use of ships, the detection of gas leakage is strictly required, and particularly for marine dangerous goods safety protection and rescue ships, the slight leakage of dangerous gas can cause a great safety problem. However, under the condition of micro pressure, the possible gas leakage value of the cabin is generally small, and an allowable gas leakage value is preset in a part of the cabins, so that the conventional gas leakage detection device cannot accurately and timely detect the gas leakage condition of the cabin, and therefore a gas leakage detection device for a ship with high precision is required to precisely detect the gas leakage condition.
Disclosure of Invention
Accordingly, the present invention provides a ship air leakage amount detection device capable of accurately measuring air leakage amount.
The technical scheme of the invention is as follows: the utility model provides a gas leakage detection device for boats and ships, includes fan, first venturi, pressure differential changer, signal converter and signal processing subassembly, the fan with the signal processing subassembly electricity is connected, first venturi's output and the input of awaiting measuring the measuring cabin are connected, pressure differential changer's pressure differential signal acquisition end with first venturi's pressure differential delivery outlet is connected, the signal of telecommunication input of pressure differential changer output signal processing subassembly turns into behind the digital signal input signal processing subassembly.
Optionally, the measuring device further comprises a second venturi tube, and an input end of the second venturi tube is connected with an output end of the chamber to be measured.
Optionally, the venturi tube further comprises a stop valve, and the stop valve is arranged at the input end of the second venturi tube.
Optionally, the fan further comprises a sampling assembly, and the sampling assembly is arranged at the output end of the fan.
Optionally, the fan air conditioner further comprises an air adjusting door, and the air adjusting door and the fan are electrically connected and used for manually adjusting the output quantity of the fan.
Optionally, the fan is a variable frequency fan, and the frequency modulator is electrically connected with the fan and used for automatically adjusting the output quantity of the fan.
Optionally, the sampling device further comprises an electric cabinet, the differential pressure transmitter, the signal converter and the signal processing assembly are arranged in the electric cabinet, and the electric cabinet is electrically connected with the fan, the signal processing assembly and the sampling assembly.
Optionally, the monitoring device further comprises an alarm component, the alarm component is electrically connected with the signal processing component, and the alarm component acts when the signal processing component obtains an abnormal signal.
Optionally, the bottom of the fan is further provided with a plurality of idler wheels, and the idler wheels are used for driving the fan to move.
Another object of the present invention is to provide a method for using the above-mentioned air leakage detecting device for a ship, including the steps of:
firstly, preparation of connection: the fan is connected to the input end of the cabin to be measured through the first venturi tube, and gas is input into the cabin to be measured through the fan, so that the cabin to be measured is in a set positive pressure state;
collecting signals: the gas quantity output by the first Venturi tube is converted into an electric signal through the differential pressure transmitter, and the electric signal is converted into a digital signal through the signal converter and then is input into the signal processing assembly;
thirdly, data processing: and the signal processing component is used for analyzing and processing the received digital signal and the signal of the air quantity input by the fan to obtain the difference value of the quantity of the gas input by the cabin to be measured and the quantity of the gas output by the cabin to be measured, and the difference value is the air leakage quantity of the cabin to be measured.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
when the ship air leakage detection device is used, the fan inputs a certain amount of gas to the input end of the cabin to be measured through the first Venturi tube, the gas is converted into a digital signal through the differential pressure transducer and the signal converter after being output from the cabin to be measured, and the data of the input gas amount and the electric signal are processed through the signal processing assembly, so that the obtained gas flow difference value at the two ends of the cabin to be measured is the air leakage of the cabin to be measured, accurate air leakage can be obtained even under a micro-pressure condition, and the condition that a conventional air leakage detection device cannot detect the air leakage is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a ship air leakage amount detection device according to an embodiment of the present invention.
Fig. 2 is a circuit connection diagram of the air leakage detection device for the ship according to the embodiment of the present invention.
Description of reference numerals:
100. an air leakage detecting device for a ship,
1. fan, 2, first venturi, 3, second venturi, 4, sampling subassembly, 5, air register, 6, stop valve, 7, electric cabinet, 8, gyro wheel, 9, differential pressure changer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In addition, the terms "first", "second", and the like are employed in the present invention to describe various information, but the information should not be limited to these terms, which are used only to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
Referring to fig. 1 and 2, the embodiment provides a leakage detection device for a ship, including a fan 1, a first venturi tube 2, a differential pressure transmitter 9, a signal converter and a signal processing assembly (the signal converter and the signal processing assembly are not shown in the figure), the fan 1 is electrically connected with the signal processing assembly, an input end of a cabin to be measured at an output end of the first venturi tube 2 is connected, a differential pressure signal acquisition end of the differential pressure transmitter 9 is connected with a differential pressure output port of the first venturi tube 2, an electric signal output by the differential pressure transmitter 9 is input into the signal processing assembly, and the electric signal is converted into a digital signal and then is input into the signal processing assembly. During the use, fan 1 inputs certain gas quantity to the input of the cabin of awaiting measuring through first venturi 2, and gas is from the cabin of awaiting measuring output back, turns into digital signal through pressure differential transducer 9 and signal converter, handles the data and the signal of input gas quantity through the signal processing subassembly, obtains the gas flow difference value of the cabin both ends of awaiting measuring promptly for the air leakage of the cabin of awaiting measuring, even also can obtain accurate air leakage under the micropressure condition, has avoided the unable circumstances that detects of conventional air leakage detection device.
Preferably, referring to fig. 1, in this embodiment, the apparatus 100 further includes a second venturi tube 3 and a stop valve 6, the stop valve 6 is disposed at an input end of the second venturi tube 3, and the second venturi tube 3 is connected to an output end of the cabin to be measured through the stop valve 6. With first venturi 2 and second venturi 3 locate input and the output in the volume of awaiting measuring cabin respectively, through the combined use of first venturi 2 and second venturi 3 for measuring result is more accurate. After first venturi 2 surveyed the reading for the first time, opened stop valve 6 and discharged quantitative gas through second venturi 3, compare the difference of the reading for the first time of first venturi 2 and the reading for the second time with the gas of second venturi 3 exhanst gas, can accomplish the rechecking to measuring result. Specifically, in this embodiment, the range of the second venturi tube 3 is smaller than the range of the first venturi tube 2, and by observing the change of the gas amount output by the second venturi tube 3, the numerical value of the first venturi tube 2 changes, so that more accurate air leakage can be obtained.
Preferably, referring to fig. 1, in this embodiment, the apparatus 100 further includes a sampling assembly 4, and the sampling assembly 4 is disposed at an output end of the fan 1. The input end of the fan 1 is in contact with the cabin to be measured, a gas sample in the cabin to be measured can be directly obtained through the sampling assembly 4 positioned at the input end of the fan 1, and the air pressure and the gas components in the cabin to be measured before the fan 1 is started can be obtained through analyzing the gas sample.
Preferably, referring to fig. 1, in this embodiment, the apparatus 100 for detecting gas leakage from a ship further includes a damper 5, and the damper 5 is electrically connected to the fan 1 for manually adjusting the output of the fan 1, so that the apparatus 100 for detecting gas leakage from a ship is suitable for measuring the gas leakage in different scenarios.
Preferably, referring to fig. 1, in this embodiment, the apparatus 100 further includes a frequency modulator (the frequency modulator is not shown in the figure), the fan 1 is a variable frequency fan, and the frequency modulator is electrically connected to the fan 1 for automatically adjusting the output of the fan 1. Compared with a variable-frequency fan, the air output of the constant-speed fan is difficult to adjust and stably control, so that the variable-frequency fan is preferably adopted. When the air quantity output value is difficult to obtain by manually controlling the air adjusting door 5, the air quantity output by the frequency modulator and the variable frequency fan is adjusted, so that the desired air quantity output value can be stably obtained, and the condition that the air quantity output value cannot be adjusted when the required air quantity output value is low is avoided.
Preferably, referring to fig. 1, in this embodiment, this air leakage detection device 100 for boats and ships still includes electric cabinet 7, and in signal converter and signal processing subassembly located electric cabinet 7, electric cabinet 7 located the top of fan 1 for operating personnel can look over this air leakage detection device 100 for boats and ships's condition more conveniently through electric cabinet 7, and electric cabinet 7 is connected with fan 1, signal processing subassembly, sampling component 4, first venturi 2 and the 3 electricity of second venturi. The input air volume of the fan 1 can be adjusted and displayed through the electric cabinet 7, the numerical value obtained by the signal processing assembly can be displayed, and the analysis result of the sampling assembly 4 can also be displayed.
Preferably, referring to fig. 1, in this embodiment, the apparatus 100 further includes an alarm component (the alarm component is not shown in the figure), the alarm component is electrically connected to the signal processing component, and when the signal processing component obtains an abnormal signal to determine that the leakage amount is large or even dangerous, the alarm component acts to prompt an operator to leave the cabin to be measured or wear a protection device.
Preferably, referring to fig. 1, in this embodiment, the bottom of the fan 1 is further provided with a plurality of rollers 8, and the rollers 8 are used for driving the fan 1 to move, so that the air leakage detection device 100 for the ship can be moved to different occasions for use.
The embodiment also provides a using method of the air leakage detection device for the ship, and the using method comprises the following steps:
firstly, preparation of connection: a fan 1 is connected to the input end of a cabin to be measured through a first Venturi tube 2, a second Venturi tube 3 is connected to the output end of the cabin to be measured, a stop valve 6 is closed, and gas is input into the cabin to be measured through the fan 1, so that the cabin to be measured is in a set positive pressure state, and the pressure of the cabin to be measured is stabilized at a preset pressure;
collecting signals: the gas quantity output by the first Venturi tube 2 is converted into an electric signal through a differential pressure transmitter, and the electric signal is converted into a digital signal through a signal converter and then input into a signal processing assembly;
thirdly, data processing: and the signal processing component is used for analyzing and processing the received digital signal and the signal of the air quantity input by the fan 1 to obtain the difference value of the input air quantity and the output air quantity of the cabin to be measured, wherein the difference value is the air leakage quantity of the cabin to be measured. Specifically, if the gas flow that first venturi 2 surveyed this moment is in the range, can judge that the gas flow that surveys is the cabin air leakage, if the gas flow that first venturi 2 surveyed this moment surpasss the range upper limit, surpass the cabin that surveys simultaneously and allow the air leakage, can judge that the cabin air leakage that surveys exceeds standard, if the gas flow that first venturi 2 surveyed this moment is less than the range lower limit, then open and adjust stop valve 6, increase cabin input gas flow, make the gas flow of first venturi 2 in its range, the gas flow difference that first venturi 2 and second venturi 3 surveyed this moment is the air leakage of the volume of awaiting measuring the cabin promptly.
The air leakage detection device for the ship has the following beneficial effects:
when the air leakage detection device is used, the fan inputs a certain amount of gas to the input end of the cabin to be measured through the first Venturi tube, the gas is converted into a digital signal through the pressure difference transmitter and the signal converter after being output from the cabin to be measured, data of the amount of the input gas and an electric signal are processed through the signal processing assembly, the gas flow difference value at two ends of the cabin to be measured is the air leakage of the cabin to be measured, accurate air leakage can be obtained even under a micro-pressure condition, and the condition that a conventional air leakage detection device cannot detect is avoided.
During data processing, if the gas flow measured by the first Venturi tube is within the measuring range, the measured gas flow can be judged to be cabin air leakage; if the gas flow measured by the first Venturi tube exceeds the upper limit of the measuring range and exceeds the allowable air leakage of the measured cabin, the overproof of the measured cabin can be judged; if the gas flow measured by the first Venturi tube 2 is lower than the lower limit of the measuring range, the stop valve is opened and adjusted, the input gas flow of the cabin is increased, the gas flow of the first Venturi tube is in the measuring range of the first Venturi tube, and the gas flow difference measured by the first Venturi tube and the second Venturi tube is the gas leakage of the cabin to be measured.
And thirdly, when the air adjusting door is manually controlled to be difficult to obtain an ideal air volume output value, the air volume is adjusted by adopting the frequency modulator and the variable frequency fan, so that a desired air volume output value can be stably obtained, and the condition that the air volume output value cannot be adjusted when the required air volume output value is low is avoided.
And fourthly, the input air volume of the fan can be adjusted and displayed through the electric cabinet, the numerical value obtained by the signal processing assembly can be displayed, and the analysis result of the sampling assembly can also be displayed.
The foregoing is directed to the preferred embodiment of the present invention, and it is understood that various changes and modifications may be made by one skilled in the art without departing from the spirit of the invention, and it is intended that such changes and modifications be considered as within the scope of the invention.
Claims (10)
1. The utility model provides a gas leakage detection device for boats and ships, its characterized in that, includes fan, first venturi, pressure differential changer, signal converter and signal processing subassembly, the fan with the signal processing subassembly electricity is connected, first venturi's output is connected with the input of the volume of awaiting measuring the cabin, pressure differential changer's pressure differential signal acquisition end with first venturi's pressure differential delivery outlet is connected, the signal of telecommunication input of pressure differential changer output signal processing subassembly turns into behind the digital signal input signal processing subassembly.
2. The air leakage detection device for the ship according to claim 1, further comprising a second venturi tube, wherein an input end of the second venturi tube is connected with an output end of the cabin to be measured.
3. The air leakage detection device for the ship according to claim 2, further comprising a stop valve, wherein the stop valve is arranged at an input end of the second venturi tube.
4. The marine air leakage detection device according to claim 2, further comprising a sampling assembly, wherein the sampling assembly is provided at an output end of the fan.
5. The marine air leakage detection device according to claim 4, further comprising an air damper, wherein the air damper is electrically connected to the fan and used for manually adjusting the output of the fan.
6. The marine air leakage detection device according to claim 4, further comprising a frequency modulator, wherein the fan is a variable frequency fan, and the frequency modulator is electrically connected with the fan and used for automatically adjusting the output of the fan.
7. The marine air leakage detection device according to claim 4, further comprising an electric cabinet, wherein the differential pressure transmitter, the signal converter and the signal processing assembly are arranged in the electric cabinet, and the electric cabinet is electrically connected with the fan, the signal processing assembly and the sampling assembly.
8. The marine air leakage detection device according to claim 1, further comprising an alarm component, wherein the alarm component is electrically connected to the signal processing component, and the alarm component operates when the signal processing component receives the abnormal signal.
9. The marine air leakage detection device according to any one of claims 1 to 8, wherein a plurality of rollers are further disposed at the bottom of the fan, and the rollers are used for driving the fan to move.
10. A use method of the air leakage detection device for the ship according to any one of claims 1 to 9, the use method comprising:
firstly, preparation of connection: the fan is connected to the input end of the cabin to be measured through the first venturi tube, and gas is input into the cabin to be measured through the fan, so that the cabin to be measured is in a set positive pressure state;
collecting signals: the gas quantity output by the first Venturi tube is converted into an electric signal through the differential pressure transmitter, and the electric signal is converted into a digital signal through the signal converter and then is input into the signal processing assembly;
thirdly, data processing: and the signal processing component is used for analyzing and processing the received digital signal and the signal of the air quantity input by the fan to obtain the difference value of the quantity of the gas input by the cabin to be measured and the quantity of the gas output by the cabin to be measured, and the difference value is the air leakage quantity of the cabin to be measured.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111297137.4A CN113916309A (en) | 2021-11-03 | 2021-11-03 | Air leakage detection device for ship and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111297137.4A CN113916309A (en) | 2021-11-03 | 2021-11-03 | Air leakage detection device for ship and use method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202676405U (en) * | 2012-06-29 | 2013-01-16 | 武汉东测科技有限责任公司 | Air leakage test device in automobile cabin |
| CN207964170U (en) * | 2017-12-26 | 2018-10-12 | 沈阳微特通用技术开发有限公司 | A kind of metal Roof is airtight, watertight, wind load comprehensive test machine |
| CN208887869U (en) * | 2018-11-06 | 2019-05-21 | 四川科志人防设备股份有限公司 | A kind of automatic air tightness detecting system |
| CN110411683A (en) * | 2019-09-02 | 2019-11-05 | 应急管理部四川消防研究所 | A kind of leakage cigarette test macro and its test method |
| CN111521353A (en) * | 2020-04-30 | 2020-08-11 | 广船国际有限公司 | Measuring device and measuring method for air leakage of integrated prevention cabin |
-
2021
- 2021-11-03 CN CN202111297137.4A patent/CN113916309A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202676405U (en) * | 2012-06-29 | 2013-01-16 | 武汉东测科技有限责任公司 | Air leakage test device in automobile cabin |
| CN207964170U (en) * | 2017-12-26 | 2018-10-12 | 沈阳微特通用技术开发有限公司 | A kind of metal Roof is airtight, watertight, wind load comprehensive test machine |
| CN208887869U (en) * | 2018-11-06 | 2019-05-21 | 四川科志人防设备股份有限公司 | A kind of automatic air tightness detecting system |
| CN110411683A (en) * | 2019-09-02 | 2019-11-05 | 应急管理部四川消防研究所 | A kind of leakage cigarette test macro and its test method |
| CN111521353A (en) * | 2020-04-30 | 2020-08-11 | 广船国际有限公司 | Measuring device and measuring method for air leakage of integrated prevention cabin |
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