CN115014651A - Online detection device for leakage of air exhaust filtering unit in P3-level biosafety experiment - Google Patents
Online detection device for leakage of air exhaust filtering unit in P3-level biosafety experiment Download PDFInfo
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- CN115014651A CN115014651A CN202210933602.7A CN202210933602A CN115014651A CN 115014651 A CN115014651 A CN 115014651A CN 202210933602 A CN202210933602 A CN 202210933602A CN 115014651 A CN115014651 A CN 115014651A
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- leakage
- filtering unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0095—Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses an online detection device for leakage of an exhaust filtering unit of a P3-grade biological safety experiment, which comprises: the detection plate is arranged near an air outlet of the exhaust air filtering unit in a sliding mode; the detection unit is arranged on the detection plate and used for detecting whether the air outlet of the exhaust air filtering unit leaks or not; and the air guide unit is arranged near the air outlet of the exhaust filtering unit, and when the detection unit detects that the exhaust filtering unit leaks, the air inlet of the air guide unit moves to a leakage point to guide leaked gas to the air inlet of the exhaust filtering unit. The invention determines whether the air exhaust filtering unit has leakage through the detecting unit, and once the leakage is found, the air guide unit can guide the leaked air into the air inlet of the air exhaust filtering unit at the first time, thereby reducing the influence of the leaked air on personnel and environment as much as possible and ensuring the safety of the personnel and the environment.
Description
Technical Field
The invention relates to the technical field of experimental equipment, in particular to an online detection device for leakage of an exhaust filtering unit of a P3-grade biological safety experiment.
Background
The biological laboratory grade P3 is a very high-security biological laboratory and requires that no biological leakage event occur. However, since air needs to flow inside the laboratory, the air exhausted from the laboratory needs to be filtered to ensure that the air exhausted from the laboratory does not cause air pollution.
Currently, an exhaust air filtering unit is generally installed at an exhaust air outlet of a laboratory to filter air exhausted from the laboratory. However, since the exhaust air filter unit has a risk of leakage after a long time of operation, it is necessary to detect the exhaust air filter unit in real time and to dispose of the leakage at the first time.
However, the current detection device of the exhaust filtering unit only has a detection function, and only can send alarm information to a manager when leakage occurs, and a large amount of leakage often occurs when the manager goes to a leakage point for disposal, so that the safety of personnel inside and outside a laboratory is seriously threatened.
Disclosure of Invention
The embodiment of the invention provides an online detection device for leakage of an exhaust filtering unit in a P3-level biological safety experiment, which is used for solving the problem that the exhaust filtering unit detection device in the prior art is single in function and cannot be disposed at the first time.
On one hand, the embodiment of the invention provides an online detection device for leakage of an exhaust filtering unit of a P3-grade biological safety experiment, which comprises:
the detection plate is arranged near an air outlet of the exhaust air filtering unit in a sliding mode;
the detection unit is arranged on the detection plate and used for detecting whether the air outlet of the exhaust air filtering unit leaks or not;
and the air guide unit is arranged near the air outlet of the exhaust filtering unit, and when the detection unit detects that the exhaust filtering unit leaks, the air inlet of the air guide unit moves to a leakage point to guide the leaked air to the air inlet of the exhaust filtering unit.
The online detection device for the leakage of the exhaust filtering unit in the P3 level biosafety experiment has the following advantages:
whether the air exhaust filtering unit leaks or not is determined through the detecting unit, once leakage is found, the leaked air can be guided into the air inlet of the air exhaust filtering unit through the air guide unit at the first time, the influence of the leaked air on personnel and the environment is reduced as much as possible, and the safety of the personnel and the environment is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an online detection device for leakage of an exhaust filtering unit in a P3-level biosafety experiment, according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a detector according to an embodiment of the present invention.
The reference numbers indicate: 100-sliding rail, 200-sliding driving unit, 210-driving wheel, 220-connecting unit, 230-lifting driving unit, 240-rotating driving unit, 300-detecting plate, 310-detecting unit, 311-wind receiving unit, 312-rotating detecting unit, 400-outer pipe, 410-inner rod, 420-nut mounting base, 430-air inlet cover and 440-air guide pipe.
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.
Fig. 1 is a schematic structural diagram of an online detection device for leakage of an exhaust filtering unit in a P3-level biosafety experiment, provided by an embodiment of the present invention. The embodiment of the invention provides an online detection device for leakage of an exhaust filtering unit in a P3-level biosafety experiment, which comprises:
the detection plate 300 is arranged near an air outlet of the exhaust air filtering unit in a sliding mode;
the detection unit 310 is arranged on the detection plate 300 and used for detecting whether the air outlet of the exhaust air filtering unit leaks or not;
and the air guide unit is arranged near the air outlet of the exhaust filtering unit, and when the detection unit 310 detects that the exhaust filtering unit leaks, the air inlet of the air guide unit moves to a leakage point to guide the leaked air to the air inlet of the exhaust filtering unit.
Illustratively, a slide rail 100 may be provided near the outlet of the exhaust air filter unit, and the detection plate 300 is slidably provided on the slide rail 100. In the embodiment of the present invention, two slide rails 100 are provided, respectively, on two sides of the exhaust air filtering unit, for example, on the upper and lower sides or on the left and right sides. And the directions of the two slide rails 100 are parallel, and both ends of the detection plate 300 are respectively arranged on the two slide rails 100 in a sliding manner.
To improve the accuracy of detecting a leak in an exhaust filter unit, a plurality of monitoring units 310 may be disposed on the detection plate 300 in rows and columns, and the plurality of detection plates 300 may cover the entire area of the outlet of the exhaust filter unit when the detection plates 300 move on the slide rail 100.
In one possible embodiment, the end of the detection plate 300 is disposed on the outer side of the connection unit 220, and the connection unit 220 is slidably disposed on the slide rail 100.
For example, the slide rail 100 may have a T-shaped structure, and the connecting unit 220 may be provided with a T-shaped sliding slot matching with the shape and size of the slide rail 100, so that the connecting unit 220 and the slide rail 100 can be slidably connected by inserting the slide rail 100 into the sliding slot.
In one possible embodiment, the connecting unit 220 is internally provided with a sliding driving unit 200, a fixed portion of the sliding driving unit 200 is connected with the connecting unit 220, a driving wheel 210 is connected with a driving portion of the sliding driving unit 200, and the driving wheel 210 is in contact with the slide rail 100.
Illustratively, the slide driving unit 200 may employ a stepping motor, which may be wholly or partially located inside the connection unit 220. The driving wheel 210 may be a smooth wheel or a gear, and if a gear is used, a plurality of teeth are required to be arranged on the surface of the slide rail 100 contacting with the driving wheel 210, and the driving wheel 210 is engaged with the teeth on the slide rail 100.
In a possible embodiment, the air guide unit includes: an inner rod 410, wherein the inner rod 410 is a screw rod, and one end of the inner rod is inserted into the connecting unit 220 and connected with the lifting driving unit 230; a nut mounting seat 420 screwed on the inner rod 410; the air inlet cover 430 is connected with the tail end of the nut mounting seat 420, the air inlet cover 430 is communicated with the air guide pipe 440, and the tail end of the air guide pipe 440 is communicated with an air inlet of the exhaust air filtering unit.
Illustratively, since the number of the slide rails 100 is two, and each slide rail 100 is provided with the connecting unit 220, the slide driving unit 200 and the driving wheel 210, both ends of the inner rod 410 are rotatably provided on the two connecting units 220, respectively. The lifting driving unit 230 may also adopt a stepping motor, and when the lifting driving unit 230 drives the inner rod 410 to rotate, the nut mounting seat 420 screwed on the inner rod 410 moves up and down on the inner rod 410, so that the air inlet cover 430 moves to a leakage point.
In the embodiment of the present invention, in order to improve the contact sealing performance between the air inlet cover 430 and the air outlet of the exhaust filter unit, a rubber gasket may be disposed on the edge of the air inlet cover 430, and when the air inlet cover 430 contacts with the leakage point on the air outlet of the exhaust filter unit, the rubber gasket can effectively ensure the contact sealing effect between the air inlet cover 430 and the leakage point.
In a possible embodiment, the wind guiding unit further includes: the outer pipe 400 is sleeved outside the inner rod 410, the tail end of the outer pipe 400 is rotatably arranged on the connecting unit 220, one end, extending into the connecting unit 220, of the outer pipe 400 is connected with the rotation driving unit 240, a sliding hole is formed in the side face of the outer pipe 400, a connecting rod is slidably arranged in the sliding hole, and two ends of the connecting rod are respectively connected to the nut mounting seat 420 and the air inlet cover 430.
Illustratively, the width of the sliding hole is equivalent to the thickness of the connecting rod, and by inserting the connecting rod into the sliding hole, the nut mount 420 is prevented from rotating together with the inner rod 410, so that the nut mount 420 can be lifted and lowered on the inner rod 410.
Further, when the detecting unit 310 is in a normal scanning state and no leakage point is found, the outer tube 400 is driven by the rotation driving unit 240 to rotate by a certain angle, so that the air inlet cover 430 and the air outlet of the exhaust air filtering unit have a certain distance, i.e. they do not contact with each other, to reduce the influence on the movement of the detecting plate 300. When the detection unit 310 detects a leakage point, the outer tube 400 is driven by the rotation driving unit 240 to rotate in a reverse direction by a certain angle, so that the air inlet of the air inlet cover 430 is in close contact with the leakage point of the air outlet of the exhaust filter unit, and the leaked air is guided into the air inlet of the exhaust filter unit.
In one possible embodiment, the rotation driving unit 240 is in contact with the driving wheel 210, and the rotation driving unit 240 is rotated by the driving wheel 210.
Illustratively, since both ends of the sensing plate 300 are coupled to the two coupling units 220 and the sliding driving unit 200 and the driving wheel 210 are provided inside each coupling unit 220, the rotation driving unit 240 and the elevation driving unit 230 may be provided on or inside the two coupling units 220, respectively.
In an embodiment of the present invention, in order for the rotation driving unit 240 to rotate the outer tube 400 only when needed, the rotation driving unit 240 may include: an inner ring connected with the outer tube 400; and the outer ring is rotatably sleeved outside the inner ring, the outer side surface of the outer ring is in contact with the driving wheel 210, an electromagnet is arranged between the outer ring and the inner ring, and the electromagnet attracts the inner ring and the outer ring together when being electrified, so that the outer tube 400 synchronously rotates along with the driving wheel 210.
With the above-structured rotary drive unit 240, when the detection unit 310 is in the scanning state, the electromagnet is not energized, the outer ring can freely rotate along with the drive wheel 210, and the inner ring does not rotate together, so that the outer tube 400 is kept stationary. When a leakage point is detected, the electromagnet is electrified to attract the outer ring and the inner ring, and the outer pipe 400 also rotates along with the rotation of the driving wheel 210, so that the outer pipe 400 is gradually contacted with and pressed against the leakage point of the air outlet of the air exhaust filtering unit.
In the embodiment of the present invention, the sensing plate 300 and the outer tube 400 are respectively located at the left and right sides of the space between the two coupling units 220, so that after the sensing unit 310 senses the leakage point, it is necessary to move the wind inlet cover 430 not only to a proper height by the elevating driving unit 230, but also to move the wind inlet cover 430 a distance in the horizontal direction so as to be moved to the position opposite to the leakage point. According to the invention, the outer pipe 400 is driven to rotate by the driving wheel 210, so that the air inlet cover 430 gradually approaches to the air outlet of the exhaust filtering unit while moving horizontally, and the moving efficiency of the air inlet cover 430 is improved.
In a possible embodiment, the detection unit 310 comprises: a rotation detection unit 312 provided on the detection plate 300; and a wind receiving unit 311 disposed on the rotation shaft of the rotation detecting unit 312.
Illustratively, as shown in fig. 2, the wind receiving unit 311 includes a connecting portion and a plurality of blades, the plurality of blades are uniformly disposed on an outer side surface of the connecting portion, and the connecting portion is also connected to the rotation shaft of the rotation detecting unit 312. In an embodiment of the present invention, the rotation detecting unit 312 may employ a rotation speed sensor to detect a rotation speed of the wind unit 311 under the influence of the leaking gas.
In a possible embodiment, the detection device further comprises: the main control unit is electrically connected with the detection units 310 and used for monitoring the output signal of each detection unit 310; and the display unit is electrically connected with the main control unit and is used for displaying the state of each detection unit 310 monitored by the main control unit.
Illustratively, the main control unit may adopt an STM32 or STC89C52 series single chip microcomputer, analog signals output by the rotation detection unit 312 in the detection unit 310 are amplified, filtered and subjected to analog-to-digital conversion by the signal conditioning circuit and then input to the main control unit, the main control unit determines the state of each detection unit 310 according to input digital signals, including information such as whether the detection unit rotates, the rotation speed and the position, and the display unit may adopt an LED or an LCD display screen and integrate a touch input function, so that a manager can conveniently check and operate the display unit.
Further, the main control unit may be electrically connected to the sliding driving unit 200, the lifting driving unit 230, and the electromagnet, so that the main control unit can control these devices in a unified manner.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
- The online detection device that leaks of filter unit is aired exhaust in P3 level biosafety experiment, its characterized in that includes:the detection plate (300) is arranged near an air outlet of the exhaust air filtering unit in a sliding mode;the detection unit (310) is arranged on the detection plate (300) and used for detecting whether the air outlet of the exhaust air filtering unit leaks or not;and the air guide unit is arranged near an air outlet of the exhaust filtering unit, and when the detection unit (310) detects that the exhaust filtering unit leaks, an air inlet of the air guide unit moves to a leakage point to guide leaked air to the air inlet of the exhaust filtering unit.
- 2. The online P3-grade biosafety test exhaust filter unit leakage detection device according to claim 1, further comprising:and the sliding rail (100) is arranged near the air outlet of the exhaust filtering unit, and the detection plate (300) is arranged on the sliding rail (100) in a sliding manner.
- 3. The P3-grade biosafety experiment exhaust air filtering unit leakage online detection device as recited in claim 2, wherein the end of the detection plate (300) is arranged on the outer side surface of the connection unit (220), and the connection unit (220) is slidably arranged on the sliding rail (100).
- 4. The device for detecting leakage of an exhaust filtering unit in a P3-grade biosafety test according to claim 3, wherein a sliding driving unit (200) is disposed inside the connecting unit (220), a fixed portion of the sliding driving unit (200) is connected to the connecting unit (220), a driving wheel (210) is connected to a driving portion of the sliding driving unit (200), and the driving wheel (210) is in contact with the sliding rail (100).
- 5. The on-line detection device for the leakage of the P3-grade biosafety experiment exhaust filtering unit according to claim 3, wherein the air guiding unit comprises:the inner rod (410) is a screw rod, and one end of the inner rod (410) is inserted into the connecting unit (220) and is connected with the lifting driving unit (230);a nut mounting seat (420) screwed on the inner rod (410);the air inlet cover (430) is connected with the tail end of the nut mounting seat (420), the air inlet cover (430) is communicated with the air guide pipe (440), and the tail end of the air guide pipe (440) is communicated with an air inlet of the exhaust filtering unit.
- 6. The on-line detection device for the leakage of the P3-grade biosafety test exhaust filtering unit according to claim 5, wherein the air guiding unit further comprises:outer tube (400), cup joint interior pole (410) outside, the end rotation of outer tube (400) sets up on linkage unit (220), just outer tube (400) stretch into the one end and the rotation drive unit (240) of linkage unit (220) are connected, the slide opening has been seted up to the side of outer tube (400), it is provided with the connecting rod to slide in the slide opening, the both ends of connecting rod are connected respectively on nut mount pad (420) and air inlet cover (430).
- 7. The P3-grade biosafety test exhaust filter unit leakage online detection device according to claim 6, wherein the rotary driving unit (240) is in contact with the driving wheel (210), and the rotary driving unit (240) is driven by the driving wheel (210) to rotate.
- 8. The on-line detection device for P3-grade biosafety test exhaust filter unit leakage according to claim 7, wherein the rotary drive unit (240) comprises:an inner ring connected with the outer tube (400);the outer ring is rotatably sleeved outside the inner ring, the outer side face of the outer ring is in contact with the driving wheel (210), an electromagnet is arranged between the outer ring and the inner ring, and the electromagnet attracts the inner ring and the outer ring together when being electrified, so that the outer pipe (400) synchronously rotates along with the driving wheel (210).
- 9. The on-line detection device for P3-grade biosafety test exhaust filter unit leakage according to claim 1, wherein the detection unit (310) comprises:a rotation detection unit (312) provided on the detection plate (300);and the wind receiving unit (311) is arranged on the rotating shaft of the rotation detection unit (312).
- 10. The on-line detection device for the leakage of the P3-grade biosafety test exhaust filtering unit according to claim 1, further comprising:the main control unit is electrically connected with the detection units (310) and is used for monitoring the output signal of each detection unit (310);and the display unit is electrically connected with the main control unit and is used for displaying the state of each detection unit (310) monitored by the main control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210933602.7A CN115014651A (en) | 2022-08-04 | 2022-08-04 | Online detection device for leakage of air exhaust filtering unit in P3-level biosafety experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210933602.7A CN115014651A (en) | 2022-08-04 | 2022-08-04 | Online detection device for leakage of air exhaust filtering unit in P3-level biosafety experiment |
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| CN115014651A true CN115014651A (en) | 2022-09-06 |
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| CN202210933602.7A Pending CN115014651A (en) | 2022-08-04 | 2022-08-04 | Online detection device for leakage of air exhaust filtering unit in P3-level biosafety experiment |
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| CN214175260U (en) * | 2020-12-29 | 2021-09-10 | 河南省烟草公司郑州市公司 | Diesel oil gas leakage detection alarm exhaust linkage device |
| CN113719309A (en) * | 2021-08-16 | 2021-11-30 | 温州市瓯江引水发展有限公司 | Long-distance tunnel rail type ventilation system |
| CN215338735U (en) * | 2021-07-27 | 2021-12-28 | 安徽华普检测技术有限公司 | Gas leakage detection device |
| CN216619379U (en) * | 2021-11-04 | 2022-05-27 | 上海径然动力科技合伙企业(有限合伙) | Automatic gas fuel leakage detection system |
| CN217092530U (en) * | 2021-11-18 | 2022-08-02 | 上海荷荫环境科技有限公司 | On-line leakage detection type upper air exhaust filtering system |
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| CN101905229A (en) * | 2010-08-09 | 2010-12-08 | 江苏绿盛环境工程有限公司 | Movable type exhaust hood for workshop ventilation |
| CN110207910A (en) * | 2017-09-19 | 2019-09-06 | 合肥通用机械研究院有限公司 | A kind of automation valve leak rate test device including exhaust unit |
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| CN110145823A (en) * | 2019-06-20 | 2019-08-20 | 青海省地方病预防控制所 | A kind of scan-type high-efficient purification return air gas collecting apparatus |
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| CN113719309A (en) * | 2021-08-16 | 2021-11-30 | 温州市瓯江引水发展有限公司 | Long-distance tunnel rail type ventilation system |
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