CN217466596U - Quick smoke concentration testing arrangement based on beta ray method - Google Patents
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- CN217466596U CN217466596U CN202221358290.3U CN202221358290U CN217466596U CN 217466596 U CN217466596 U CN 217466596U CN 202221358290 U CN202221358290 U CN 202221358290U CN 217466596 U CN217466596 U CN 217466596U
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Abstract
The utility model relates to a quick testing arrangement of smoke and dust concentration based on beta ray method. The utility model discloses a smoke concentration rapid test device based on a beta-ray method, which comprises a case, and a rotary driving component, a smoke sampling component and a beta-ray detection component which are arranged inside the case, wherein the rotary driving component comprises a rotary disk and a base which are horizontally arranged; the smoke sampling assembly is arranged above the rotating disc, and an exhaust port of the smoke sampling assembly is arranged above the rotating disc; the beta-ray detection assembly comprises a beta-ray generator and a photomultiplier which are oppositely arranged on the upper side and the lower side of the rotating disc, a first detection port for placing the filter paper clamping assembly is formed in the rotating disc, and the first detection port is driven to move to the position below the exhaust port or a detection area; quick testing arrangement of smoke and dust concentration, rotate through the carousel and drive filter paper and remove between sampling subassembly and beta ray detection subassembly, realized quick and accurate smoke and dust monitoring, improved the reliability of device.
Description
Technical Field
The utility model relates to a smoke and dust detection device's technical field especially relates to a quick testing arrangement of smoke and dust concentration based on beta ray method.
Background
Smoke dust is the primary pollutant affecting the quality of ambient air, and is deeply researched and controlled by countries in the world in order to reduce the emission of smoke dust from industrial boilers, power station boilers, industrial kilns and the like. The currently common soot concentration test methods include: a filter membrane weighing method, a micro-oscillation balance method, a light scattering test method, a beta ray absorption method and the like. The traditional method of weighing the filter membrane has higher detection precision and is used more, but the detection method needs complicated processes of collecting, drying, weighing and the like for the flue gas, so that the detection cost, the detection time and the field labor intensity are greatly increased. The beta-ray absorption method is that firstly the beta-ray passes through the cleaning filter paper and the sampling filter paper successively, and the smoke concentration is obtained according to the difference of the beta-ray absorbed quantities of the front and the back 2 times, so that the method is not influenced by the type, granularity, dispersity, shape and the like of the smoke, does not bring human errors, and is an accurate and rapid method in the smoke measurement method. The beta ray absorption method selects a filter membrane made of glass fiber, quartz and the like. The material of the filter membrane should not absorb or react with the gaseous compounds in the waste gas, and should be thermally stable at the maximum sampling temperature; the capture efficiency of the filter membrane was greater than 99.5% for standard particles with a diameter of 0.3 μm and greater than 99.9% for standard particles with a diameter of 0.6 μm.
In the prior art, a beta-ray smoke concentration test device mainly comprises a smoke sampling device (a sampling tube, an air pump and a flowmeter), a preheating device, a filter paper conveying device, a beta-ray detection device and the like. There are mainly the following limitations:
the filter paper conveying device is mainly designed by a paper feeding mechanism and comprises a photoelectric encoder, a stepping motor, a paper feeding/collecting wheel, a guide wheel, a lifting driving device and other parts, and has the advantages of complex structural design, larger equipment volume and higher cost;
the paper feeding mode usually adopts a rolling and rolling mode, so that the paper feeding device is easy to slip, inaccurate in positioning, adhered and the like, and causes smoke leakage to cause deviation of a measurement result.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model provides a quick testing arrangement of smoke and dust concentration based on beta ray method rotates through the carousel and drives filter paper and remove between sampling subassembly and beta ray detection subassembly, has realized quick and accurate smoke and dust monitoring, has improved the reliability of device.
The utility model provides a portable flue gas analysis tester, which comprises a case, a rotary driving component, a smoke dust sampling component and a beta ray detection component, wherein the rotary driving component, the smoke dust sampling component and the beta ray detection component are arranged in the case;
the smoke and dust sampling assembly is arranged above the rotating disc and comprises an air inlet and an air outlet, the air inlet is arranged on the case, and the air outlet is arranged above the rotating disc;
the beta ray detection assembly comprises a beta ray generator and a photomultiplier tube which are oppositely arranged on the upper side and the lower side of the rotating disc, and a detection area is formed between the beta ray generator and the photomultiplier tube;
the rotary disc is arranged above the base, a first detection port for placing a filter paper clamping assembly is formed in the rotary disc, the rotary disc can rotate relative to the base and drives the first detection port to move to the position below the exhaust port or the detection area;
when the first detection port rotates to the air outlet, the filter paper clamping assembly is in sealing fit with the air outlet.
A first detection port is formed in the rotating disc, the detection port is used for arranging a filter paper clamping assembly, the filter paper clamping assembly is driven to move back and forth between the smoke dust sampling assembly position and the beta-ray detection assembly position through rotation of the base and the rotating disc, and therefore sampling and detection operations of smoke dust particles are achieved.
Further, an installation groove is formed below the rotating disc and close to the first detection port, one end of the installation groove is communicated with the inner side of the first detection port, and a clamping part is arranged in the installation groove;
the clamping part comprises a micro cylinder and a clamping block, the clamping block is arranged on a guide rod of the micro cylinder, and when the filter paper clamping assembly is arranged at the first detection port, the clamping block extends out and is abutted to the bottom of the filter paper clamping assembly.
The filter paper clamping assembly is fixed through the clamping part, and sampling and detection operations are completed.
Further, the filter paper clamping assembly is of an O-shaped sealing ring structure;
the filter paper clamping assembly comprises a first sealing ring and a second sealing ring which are mutually overlapped, and an accommodating space for installing filter paper is formed between the first sealing ring and the second sealing ring.
The filter paper is clamped by the first sealing ring and the second sealing ring, and the filter paper is moved to the smoke sampling assembly and the beta-ray detection assembly through the rotary driving assembly while being sealed.
Further, a sealing groove is formed in the upper surface of the first sealing ring;
when the filter paper clamping assembly moves to the air outlet, the top end of the pipe wall of the air outlet is fixed in the sealing groove in a sealing mode.
And the smoke concentration detection is inaccurate due to the fact that the smoke is leaked in a sealing fit mode during sampling.
Further, the first sealing ring is made of elastic rubber materials.
Through elastic deformation of the elastic structure, the filter paper clamping assembly is compressed and sealed, and meanwhile, the pipe wall at the exhaust port is compressed, so that sealing during sampling is realized.
Further, a filter paper storage chamber is vertically arranged below the rotating disc and comprises a stepping motor and a support plate, a first opening is formed in the top of the filter paper storage chamber, and a plurality of filter paper clamping assemblies are vertically overlapped in the filter paper storage chamber;
when the first detection port moves to the position above the first opening, the stepping motor drives the supporting plate to move vertically, the supporting plate pushes the uppermost filter paper clamping assembly to move to the position of the first detection port, and the clamping block extends out and fixes the filter paper clamping assembly to the position of the first detection port.
The filter paper storeroom sends the new filter paper clamping assembly with the filter paper arranged inside to the first detection port, and the filter paper clamping assembly is driven by the rotating disc to perform sampling and detection.
Further, a filter paper recovery chamber is vertically arranged below the rotating disc, and a second opening is formed in the top of the filter paper recovery chamber;
when the first detection port moves to the second opening, the clamping block retracts, and the filter paper clamping assembly falls into the filter paper recovery chamber through the second opening for storage.
The detected filter paper clamping piece falls into the filter paper recovery chamber through the first detection port for storage and reuse.
Furthermore, the smoke sampling assembly, the beta ray detection assembly, the filter paper storage chamber and the filter paper recovery chamber are sequentially arranged at ninety-degree included angles in the clockwise direction.
The filter paper clamping piece moves to the positions of all the components in sequence, so that sampling and detection operations are realized.
Furthermore, a second detection port is also arranged on the rotating disc, the second detection port is arranged on the left side of the first detection port, and an included angle between the position of the second detection port and the position of the first detection port is ninety degrees;
when the first detection port is located below the exhaust port, the second detection port is located at the detection region.
Two detection ports detect simultaneously, improve detection efficiency.
Further, the smoke and dust sampling subassembly includes the preheating chamber, be provided with cigarette temperature sensor, heating source and blast fan in the preheating chamber, the preheating chamber is arranged in eliminating the comdenstion water in the flue gas.
The adsorption influence of condensed water on smoke particles is eliminated by preheating, and the detection precision of smoke concentration is ensured.
For better understanding and implementation, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a rapid smoke concentration testing device based on a beta-ray method according to an embodiment of the present invention;
fig. 2 is a schematic view of a filter paper clamping assembly of a rapid smoke concentration testing device based on a beta-ray method according to an embodiment of the present invention;
fig. 3 is a schematic view of a rotating disc of a rapid smoke concentration testing device based on a beta-ray method according to an embodiment of the present invention;
fig. 4 is a schematic sectional view of a rotating disk of a rapid smoke concentration testing device based on a beta-ray method according to an embodiment of the present invention;
FIG. 5 is a schematic view of a filter paper storage chamber of a rapid smoke concentration testing device based on a beta-ray method according to an embodiment of the present invention;
fig. 6 is a schematic view of a smoke concentration rapid testing device based on a beta-ray method according to an embodiment of the present invention.
In the figure, 1-chassis; 2-a rotary drive assembly; 201-rotating disc; 2011-first detection port; 2012-a second detection port; 2013-clamping component mounting position; 2014-clamping assembly retrieval position; 2015-detection region; 2016-sampling area; 202-a base; 3-a smoke sampling assembly; 301-an air inlet; 302-an exhaust port; 303-preheating chamber; 3031-smoke temperature sensor; 3032-a heating source; 3033-a blower fan; a 4-beta ray detection assembly; a 401-beta ray generator; 402-a photomultiplier tube; 5-filter paper storeroom; 501-first opening, 502-support plate; 503-step motor; 6-filter paper recovery chamber; 7-a filter paper clamping component; 701-a first sealing ring; 7011-seal groove; 702-a second seal ring; 8-a clamping portion; 81-micro cylinder; 82-a clamping block; 9-a display screen; 10-an operation panel; 11-side door handle; and 12-lifting the handle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In the following, several specific embodiments are given for describing the technical solution of the present application in detail. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Please refer to fig. 1, which is a schematic diagram of a smoke concentration β -ray method rapid testing apparatus according to an embodiment of the present invention, the smoke concentration β -ray method rapid testing apparatus according to the embodiment includes a case 1, a rotation driving component 2, a smoke sampling component 3, and a β -ray detecting component 4, which are disposed inside the case 1, the case 1 is a rectangular box body, an accommodating space is formed inside the case 1, and an air inlet and an air outlet are disposed on the case 1.
In the above embodiment, the rotating driving assembly 2 is horizontally disposed at a middle position in the box 1, the rotating driving assembly 2 includes the rotating disc 201 and the base 202, the rotating disc 201 and the base 202 are cylindrical structures, an accommodating space is formed between the rotating disc 201 and the base 202, and the rotating disc 201 is driven by the base 202 to rotate on a horizontal plane. In other examples, the connection relationship between the rotary disk 201 and the base 202 may be other structures that enable the rotary disk 201 to rotate horizontally, such as through a rotary shaft connection.
As shown in fig. 1 and 3, in an embodiment, a first detection port 2011 and a second detection port 2012 are disposed on the rotating disc 201, the first detection port 2011 and the second detection port 2012 are used for mounting the filter paper clamping assembly 7, the first detection port 2011 and the second detection port 2012 are through hole structures penetrating through the rotating disc 201, preferably, the first detection port 2011 is located on the surface of the rotating disc 201 near the edge of the rotating disc 201, the second detection port 2012 is disposed on the left side of the first detection port 2011 and is disposed at an included angle of ninety degrees with the first detection port 2011, and a distance from a center of the second detection port 2012 to a center of the rotating disc 201 is equal to a distance from a center of the first detection port 2011 to a center of the rotating disc 201. In other examples, the number and position of the detection ports may be adjusted as desired.
Please refer to fig. 4, which is a schematic cross-sectional view of a rotating disk of a rapid smoke concentration beta-ray testing apparatus according to an embodiment of the present invention, in this embodiment, a lower surface of the rotating disk 201 is close to inner walls of the first detecting port 2011 and the second detecting port 2012, and is provided with a corresponding mounting groove, one end of the mounting groove is communicated with the detecting port, the mounting groove is provided with a clamping portion 8, the clamping portion 8 includes a micro cylinder 81 and a clamping block 82, and the clamping block 82 is disposed on a guide rod of the micro cylinder 81. When the filter paper clamping assembly 7 is not arranged at the detection port, the clamping block 82 is in a retraction state and is accommodated in the installation groove, and when the filter paper clamping assembly 7 is arranged at the detection port, the micro cylinder 81 pushes the clamping block 82 to extend out and abut against the bottom of the filter paper clamping assembly 7, so that the filter paper clamping assembly 7 is fixed at the detection port. In other examples, the number of the arranged clamping parts 8 can be set to be different according to needs, or the clamping block 82 can be other structures for fixing the position of the filter paper clamping assembly 7, and the fixing and the releasing of the fixing of the filter paper clamping assembly 7 can be realized through a control element.
As shown in fig. 2, in an embodiment, the filter paper clamping assembly 7 is specifically an O-ring structure, and includes a first sealing ring 701 and a second sealing ring 702 which are stacked up and down, and an accommodating space for installing filter paper is formed between the first sealing ring 701 and the second sealing ring 702, preferably, a clamping groove is provided at the bottom of the first sealing ring 701, and a clamping portion is provided at the top of the second sealing ring 702, so that the first sealing ring 701 and the second sealing ring 702 clamp the filter paper through clamping engagement of the clamping groove and the clamping portion. In other examples, the connection between the first sealing ring 701 and the second sealing ring 702 may be implemented in other manners and structures to ensure sealing.
Preferably, the first sealing ring 701 is of an elastic rubber structure, and due to elastic deformation of the first sealing ring 701, a gap between the first sealing ring 701 and the second sealing ring 702 can be further reduced, in this embodiment, a sealing groove 7011 is formed in the top of the first sealing ring 701, preferably, the inner side wall of the sealing groove 7011 is higher than the outer side wall, and the sealing groove 7011 is matched with the exhaust port of the smoke sampling assembly 3, so that the sealing performance is improved, and the smoke leakage is avoided from affecting the detection precision.
As shown in fig. 1, in one embodiment, a smoke sampling assembly 3 is arranged above the rotating disc 201, the smoke sampling assembly 3 comprises an air inlet 301, an air outlet 302 and a preheating chamber 303, the preheating chamber 303 is horizontally arranged above the rotating disc 201, the left end of the preheating chamber 303 is connected with the air inlet 301 and is communicated with the outside of the case through the air inlet 301, the right end of the preheating chamber 303 is connected with the air outlet 302 through an L-shaped air duct, and the air outlet 302 is vertically arranged above the rotating disc 201.
Preferably, when the rotating disc 201 drives the detection port to rotate to the lower side of the smoke sampling assembly 3, the position of the exhaust port 302 corresponds to the position of the first sealing ring 701, and the air duct wall at the exhaust port 302 is inserted into the sealing groove 7011.
Preferably, the air duct at the right end of the preheating chamber 303 is of a retractable structure, and under the driving of the driving element, when the filter paper clamping assembly 7 rotates to the position below the air outlet 302, the air duct extends downwards and moves, so that the air outlet 302 is inserted into the sealing groove 7011, and a sealing fit is formed. Specifically, the driving element may be an electric push rod (not shown), and one end of the rod is fixedly connected to the exhaust port 302 to drive the exhaust port 302 to move up and down.
In the above embodiment, the preheating chamber 303 is internally provided with the smoke temperature sensor 3031, the heating source 3032 and the blowing fan 3033, the smoke temperature sensor 3031 is arranged at a position close to the air inlet 301, and detects the temperature of the smoke dust in the flue gas flowing in, the heating source 3032 controls the temperature in the preheating chamber 303 to be maintained at 120-130 ℃, preferably 130 ℃, the blowing fan 3033 drives the air to flow, and the heating source 3032 is matched to uniformly heat the preheating chamber 303.
Preferably, the heating source 3032 is a heating wire structure, and the heating of the heating wire is controlled by a control element through the temperature of smoke and dust collected by the smoke temperature sensor 3031.
As shown in fig. 1, in one embodiment, the β -ray detection assembly 4 includes a β -ray generator 401 and a photomultiplier tube 402, the β -ray generator 401 is disposed above the rotating disk 201, the photomultiplier tube 402 is disposed below the rotating disk 201, and preferably, a detection region 2015 is formed between the β -ray generator 401 and the photomultiplier tube 402, so as to limit the β -ray emitted by the β -ray generator 401 to pass through the center of the filter paper in the filter paper holding assembly 7 and be conducted to the photomultiplier tube 402 when the filter paper holding assembly 7 rotates to the detection region 2015. In other examples, the arrangement order of the beta-ray generator 401 and the photomultiplier tube 402 may be adjusted as needed, and the specific structure of the beta-ray detection assembly 4 may be changed as needed.
As shown in fig. 1 and 5, in an embodiment, a filter paper storage chamber 5 and a filter paper recycling chamber 6 are disposed in the accommodating space between the turntable 201 and the base 202, the filter paper storage chamber 5 and the filter paper recycling chamber 6 are cylindrical structures, a cavity for accommodating the filter paper clamping assembly 7 is formed inside the cylindrical structures, a first opening 501 having the same diameter as the detection opening is formed at the top of the filter paper storage chamber 5, a second opening having the same diameter as the detection opening is formed at the top of the filter paper recycling chamber 6, and the filter paper clamping assembly 7 moves from the filter paper storage chamber 5 to the detection opening through the first opening 501 to be fixed, and falls into the filter paper recycling chamber 6 through the second opening to be stored.
Preferably, a support plate 502 and a stepping motor 503 are provided in the filter paper storage chamber 5, in the example shown in fig. 5, a plurality of filter paper clamping assemblies 7 are stacked inside the filter paper storage chamber 5, the support plate 502 supports the filter paper clamping assemblies 7 from below, the support plate 502 is pushed by the stepping motor 503 to move upward, and when the uppermost filter paper clamping assembly 7 moves to the detection port, the clamping block 82 extends and fixes the position of the filter paper clamping assembly 7.
Preferably, the upper surface of the filter paper holding assembly 7 is horizontally disposed with the upper surface of the rotating disk.
In the above embodiment, when the filter paper clamping assembly 7 moves to the position above the second opening after the detection is completed, the clamping block 82 retracts, and the filter paper clamping assembly 7 retracts due to the gravity and falls into the filter paper recovery chamber 6 for storage.
In one embodiment, as shown in fig. 1, the smoke sampling module 3, the beta ray detection module 4, the filter paper storage chamber 5 and the filter paper recycling chamber 6 are sequentially arranged at ninety degrees in a clockwise direction, and with reference to the rotating disc 201, as shown in fig. 3, four regions are formed on the rotating disc 201 at ninety degrees angles, respectively.
The exhaust port 302 of the smoke sampling assembly 3 is located above the sampling region 2016, the beta-ray generator 401 and the photomultiplier tube 402 are located on the upper and lower sides of the monitoring region 2015, the first opening 501 at the top of the filter paper storage chamber 5 is located below the clamping assembly mounting position 2013, and the second opening at the top of the filter paper recycling chamber 6 is located below the clamping assembly recycling position 2014. In other examples, the order of the components may be adjusted as desired.
As shown in fig. 6, in one embodiment, a display screen 9 and a control panel 10 are disposed on the front surface of the chassis 1, a command is sent via the control panel 10, a PLC control unit inside the chassis 1 controls each component to cooperate to perform a detection operation, and sends the detected data to the display screen 9, a side door is disposed on the right side of the chassis 1, a side door handle 11 is disposed on the side door, and each component inside the chassis 1 is maintained and replaced via the side door.
Preferably, the top of the cabinet 1 is also provided with a lifting handle 12 for carrying the whole device.
Preferably, the chassis 1 is further provided with a USB data interface. In other examples, the data transmission may be realized by means of bluetooth, WiFi or 5G signals.
Preferably, a battery assembly for supplying power to each assembly is further disposed inside the chassis 1.
Preferably, the chassis 1 is further provided with a power interface for directly supplying power to each component of the device or charging a battery component inside the chassis.
Preferably, the inside air pump that can also set up of quick-witted case, the air pump is connected with the air duct, and the air inlet of air duct sets up in the below of the region 2016 of sampling, and when filter paper centre gripping subassembly 7 and gas vent 302 seal fit, the flue gas was behind filter paper, and the smoke and dust granule remains on filter paper, and remaining flue gas flows into the air pump via the air duct.
In the rapid testing device for the smoke concentration beta-ray method in the embodiment, a plurality of groups of sampling ports and beta-ray detection assemblies 4 can be added as required, so that a plurality of groups of simultaneous tests are realized, and the efficiency is improved.
When the rapid testing device for the smoke concentration beta-ray method in the embodiment starts to operate:
the first detection port 2011 is located at the clamp assembly mounting position 2013, the second detection port 2012 is located at the clamp assembly retrieving position 2014, and the filter paper clamp assembly 7 in the filter paper storage chamber 5 is moved upward to the first detection port 2011 and is fixed by the clamping portion 8.
Subsequently, the base 202 drives the rotating disc 201 to rotate 90 degrees anticlockwise, the first detection port 2011 drives the filter paper clamping assembly 7 to move to the monitoring area 2015 and perform pre-detection, first pre-detection data are stored, the second detection port 2012 rotates to the clamping assembly mounting position 2013 and fixes a new filter paper clamping assembly 7, and the preheating chamber 303 preheats and keeps the temperature at the moment to prepare for sampling.
The rotating disk 201 rotates 90 degrees counterclockwise again, the first detection port 2011 reaches the sampling region 2016, the sampling port is in sealing fit with the first sealing ring 701 and samples, and at this time, the filter paper clamping assembly 7 at the second detection port 2012 is located at the monitoring region 2015 and performs pre-detection, and second pre-detection data is stored.
The rotary disk 201 rotates 90 degrees counterclockwise again, the first inspection port 2011 reaches the grip assembly retrieving position 2014, and the second inspection port 2012 is located at the sampling region 2016 and samples are taken.
Then the rotating disk 201 rotates clockwise by 90 degrees, the first detection port 2011 reaches the sampling region 2016, the second detection port 2012 reaches the monitoring region 2015, and the second pre-detection data is called as a standard value to perform smoke concentration detection,
after the detection is completed, the rotating disk 201 rotates 90 degrees clockwise, the first detection port 2011 reaches the monitoring area 2015, the first pre-detection data is called, the smoke concentration is detected, and the second detection port 2012 reaches the clamping component mounting position 2013.
After the detection is finished, the rotating disc 201 rotates clockwise by 90 degrees, the first detection port 2011 reaches the clamping component mounting position 2013, the second detection port 2012 reaches the clamping component recovery position 2014, the clamping block 82 is recovered, and the filter paper clamping component 7 falls into the filter paper recovery chamber 6 for storage.
The rotating disk 201 rotates clockwise 90 degrees, the first test port 2011 reaches the gripping assembly retrieving position 2014 and retrieves the filter paper gripping assembly 7, and the second test port 2012 is located at the sampling region 2016.
Finally, the rotary disk 201 rotates counterclockwise by 90 degrees, and the first test port 2011 and the second test port 2012 return to the initial positions, thereby repeating the above operations.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A quick testing arrangement of smoke and dust concentration based on beta ray method which characterized in that includes:
the smoke dust sampling device comprises a case, and a rotary driving assembly, a smoke dust sampling assembly and a beta ray detection assembly which are arranged in the case, wherein the rotary driving assembly comprises a rotary disc and a base which are horizontally arranged;
the smoke and dust sampling assembly is arranged above the rotating disc and comprises an air inlet and an air outlet, the air inlet is arranged on the case, and the air outlet is arranged above the rotating disc;
the beta ray detection assembly comprises a beta ray generator and a photomultiplier tube which are oppositely arranged on the upper side and the lower side of the rotating disc, and a detection area is formed between the beta ray generator and the photomultiplier tube;
the rotating disc is arranged above the base, a first detection port for placing the filter paper clamping assembly is formed in the rotating disc, the rotating disc can rotate relative to the base and drive the first detection port to move to the position below the exhaust port or the detection area;
when the first detection port rotates to the air outlet, the filter paper clamping assembly is in sealing fit with the air outlet.
2. The rapid smoke concentration testing device based on the beta-ray method according to claim 1, characterized in that:
an installation groove is formed below the rotating disc and close to the first detection port, one end of the installation groove is communicated with the inner side of the first detection port, and a clamping part is arranged in the installation groove;
the clamping part comprises a micro cylinder and a clamping block, the clamping block is arranged on a guide rod of the micro cylinder, and when the filter paper clamping assembly is arranged at the first detection port, the clamping block extends out and is abutted to the bottom of the filter paper clamping assembly.
3. The rapid smoke concentration testing device based on the beta-ray method according to claim 2, characterized in that:
the filter paper clamping component is of an O-shaped sealing ring structure;
the filter paper clamping assembly comprises a first sealing ring and a second sealing ring which are mutually overlapped, and an accommodating space for installing filter paper is formed between the first sealing ring and the second sealing ring.
4. The rapid smoke concentration testing device based on the beta-ray method according to claim 3, characterized in that:
a sealing groove is formed in the upper surface of the first sealing ring;
when the filter paper clamping assembly moves to the air outlet, the top end of the pipe wall of the air outlet is fixed in the sealing groove in a sealing mode.
5. The beta-ray method-based smoke concentration rapid testing device according to claim 4, characterized in that:
the first sealing ring is made of elastic rubber materials.
6. The rapid smoke concentration testing device based on the beta-ray method according to claim 2, characterized in that:
a filter paper storage chamber is vertically arranged below the rotating disc and comprises a stepping motor and a support plate, a first opening is formed in the top of the filter paper storage chamber, and a plurality of filter paper clamping assemblies are vertically overlapped in the filter paper storage chamber;
when the first detection port moves to the position above the first opening, the stepping motor drives the supporting plate to move vertically, the supporting plate pushes the uppermost filter paper clamping assembly to move to the position of the first detection port, and the clamping block extends out and fixes the filter paper clamping assembly to the position of the first detection port.
7. The beta-ray method-based smoke concentration rapid testing device according to claim 6, characterized in that:
a filter paper recovery chamber is vertically arranged below the rotating disc, and a second opening is formed in the top of the filter paper recovery chamber;
when the first detection port moves to the second opening, the clamping block retracts, and the filter paper clamping assembly falls into the filter paper recovery chamber through the second opening for storage.
8. The rapid smoke concentration testing device based on the beta-ray method according to claim 7, characterized in that:
the smoke sampling assembly, the beta ray detection assembly, the filter paper storage chamber and the filter paper recycling chamber are sequentially arranged along the clockwise direction at ninety-degree included angles.
9. The rapid smoke concentration testing device based on the beta-ray method according to claim 1, characterized in that:
the rotating disc is also provided with a second detection port, the second detection port is arranged on the left side of the first detection port, and the included angle between the position of the second detection port and the position of the first detection port is ninety degrees;
when the first detection port is located below the exhaust port, the second detection port is located at the detection region.
10. The rapid smoke concentration testing device based on the beta-ray method according to claim 1, characterized in that:
the smoke dust sampling assembly comprises a preheating chamber, a smoke temperature sensor, a heating source and a blowing fan are arranged in the preheating chamber, and the preheating chamber is used for eliminating condensed water in smoke.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115629027A (en) * | 2022-12-01 | 2023-01-20 | 杭州谱育科技发展有限公司 | Particulate matter detection device and method based on deformation data compensation processing |
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2022
- 2022-05-31 CN CN202221358290.3U patent/CN217466596U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115629027A (en) * | 2022-12-01 | 2023-01-20 | 杭州谱育科技发展有限公司 | Particulate matter detection device and method based on deformation data compensation processing |
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