CN116429652A - Pollution source flue gas automatic calibration device - Google Patents
Pollution source flue gas automatic calibration device Download PDFInfo
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- CN116429652A CN116429652A CN202310671123.7A CN202310671123A CN116429652A CN 116429652 A CN116429652 A CN 116429652A CN 202310671123 A CN202310671123 A CN 202310671123A CN 116429652 A CN116429652 A CN 116429652A
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- flue gas
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003546 flue gas Substances 0.000 title claims abstract description 26
- 239000000779 smoke Substances 0.000 claims abstract description 54
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 84
- 238000005259 measurement Methods 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims 3
- 239000007789 gas Substances 0.000 abstract description 41
- 238000012544 monitoring process Methods 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 10
- 238000013461 design Methods 0.000 description 5
- 238000000149 argon plasma sintering Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
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- G01N15/075—
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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
Abstract
The invention discloses an automatic calibration device for pollution source smoke, and relates to the technical field of detection equipment. Comprising the following steps: the device comprises a calibration tube, wherein two control components are arranged on the calibration tube, each control component is provided with at least two working states, the two working states are an open state and a closed state respectively, when the two control components are in the open state, smoke at one end of the calibration tube can flow to the other end, and when the control components are in the closed state, the communication of the smoke inside the calibration tube is cut off. The full-scale calibration method and the full-scale calibration device can realize full-scale calibration of the smoke monitoring equipment. Meanwhile, the flue gas monitoring equipment is calibrated by adopting the calibration gas with a certain concentration, so that the effect of the calibration is not influenced by pollutants adhered to the flue gas monitoring equipment. Can effectually promote, flue gas monitoring facilities automatic calibration's effect, and then promote the detection stability of flue gas monitoring facilities in continuous monitoring process.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to an automatic calibration device for pollution source smoke.
Background
At present, when the industries such as metallurgy, thermal power, cement, petrochemical industry and the like carry out production operation, the emission of smoke is often accompanied, and pollutants for polluting the atmosphere possibly exist in the emitted smoke. Therefore, the discharged smoke is required to be detected in real time by adopting smoke monitoring equipment (such as a smoke dust instrument) so as to prevent the discharged smoke from being in accordance with the environmental protection requirement and causing environmental pollution. In order to ensure the accuracy of the monitoring device in real time, the flue gas monitoring device needs to be calibrated regularly. In order to save manpower, devices capable of being matched with the smoke monitoring equipment to automatically calibrate the smoke monitoring equipment are arranged on the market. For example, publication No.: CN214844655U, entitled: a calibration structure of a back-scattering smoke dust instrument is disclosed.
Specifically, a diffuse reflector is adopted to reflect laser out of the protective cover, so that 0-point calibration of the signal collecting device (namely the monitor in the application) is realized; and the diffuse reflector is adopted to reflect the laser to the signal collecting device so as to realize full-point calibration of the signal collecting device. This way of calibration is accurate, although the initial calibration is for the 0 and full points of the signal collection device. However, as the diffuse reflector is used for a long time, the surface of the diffuse reflector is stained with dirt, and when the diffuse reflection effect is poor, the calibration effect is poor, and the monitoring equipment is seriously misaligned. Meanwhile, the structure cannot realize the calibration of other measuring ranges of the smoke dust instrument, for example: 1/4 range, 1/2 range or 3/4 range, etc.
Disclosure of Invention
The invention aims to provide an automatic calibration device for pollution source smoke, which aims to solve the technical problems that the calibration effect of smoke monitoring equipment is poor and full-range calibration cannot be performed in the long-term use process.
In order to achieve the above purpose, the present invention provides the following technical solutions: an automatic pollution source flue gas calibrating device, comprising: the device comprises a calibration tube, wherein two control components are arranged on the calibration tube, each control component is provided with at least two working states, namely an open state and a closed state, when the two control components are in the open state, the smoke at one end of the calibration tube can flow to the other end, and when the control components are in the closed state, the communication of the smoke inside the calibration tube is cut off; the installation station is arranged on the calibration tube, is positioned between the two control components and is used for installing the measurement component; and the exhaust pipe and the air inlet pipe are communicated with the calibration pipe, and the exhaust pipe and the air inlet pipe are positioned between the two control assemblies.
Preferably in this technical scheme, the control assembly includes: the control box body is a round box body, and the axial lead of the control box body is overlapped with the axial lead of the calibration tube; the control box comprises a control box body, a plurality of sealing sheets and a control assembly, wherein the sealing sheets are positioned in the control box body, the sealing sheets are spliced to form a sealing whole sheet when the control assembly is in a closed state, the sealing whole sheet is used for cutting off the communication of smoke inside the calibration pipe, and each sealing sheet is in a dispersed state when the control assembly is in an open state, so that the smoke at one end of the calibration pipe can flow to the other end.
In this technical scheme, preferably, the sealing fin is fan-shaped lamellar structure, the fan-shaped pointed end of sealing fin is towards the axial lead of calibration pipe, control assembly still includes: the control structures are in one-to-one correspondence with the sealing sheets and are used for controlling the sealing sheets to move along the radial direction of the calibration tube; and the driving structure is used for driving the control structure.
In the technical scheme, preferably, two adjacent surfaces, which are contacted with each other, of the sealing sheets are a first surface and a second surface, at least one sealing groove is formed in the first surface, sealing strips corresponding to the sealing grooves one by one are arranged on the second surface, and the sealing strips are matched with the sealing grooves.
In this technical scheme, preferably, the control structure includes: the sliding rail is arranged on the inner wall of the control box body; the gear strip is connected with the sealing piece, and a sliding block is arranged on the gear strip and can be in sliding connection with the sliding rail.
In this technical scheme, preferably, the drive structure includes: the driving gears are in one-to-one correspondence with the gear strips, and are meshed with the corresponding gear strips; the axial lead of the gear ring is coincident with the axial lead of the calibration tube, and the gear ring is meshed with each driving gear; and the driving piece is used for driving any one of the plurality of driving gears to rotate.
In this technical scheme, preferably, the sealing piece is warp column structure, the sealing piece warp to being close to the direction of the first inner wall of control box body, first inner wall be on the control box body with the sealing piece contact's inner wall.
In this technical scheme, preferably, the exhaust tube with the intake pipe distributes in proper order along vertical decurrent direction.
Preferably in this technical scheme, the calibration pipe includes: the first connecting pipe, the second connecting pipe and the third connecting pipe are connected in sequence, and the second connecting pipe is positioned between the two control components; the first end of the bypass pipe is communicated with the first connecting pipe, the second end of the bypass pipe is communicated with the third connecting pipe, and the bypass pipe is further provided with a control valve.
In this technical scheme, preferred still include the measurement subassembly, the measurement subassembly includes: a measuring box with one end open, wherein a measuring cavity and a light source cavity which are not communicated are formed in the measuring box; the light-emitting source is arranged in the light source cavity; the monitor and the convex lens are arranged in the measuring cavity; the filter piece is arranged at the opening of the measuring box.
Compared with the prior art, the invention has the beneficial effects that:
the pollution source smoke automatic calibration device can realize full-scale calibration of smoke monitoring equipment. Meanwhile, the flue gas monitoring equipment is calibrated by adopting the calibration gas with a certain concentration, so that the effect of the calibration is not influenced by pollutants adhered to the flue gas monitoring equipment. Can effectually promote, flue gas monitoring facilities automatic calibration's effect, and then promote the detection stability of flue gas monitoring facilities in continuous monitoring process.
Drawings
FIG. 1 is a perspective view of an embodiment of the present application;
FIG. 2 is a front view of an embodiment of the present application;
FIG. 3 is a cross-sectional view of an embodiment of the present application;
FIG. 4 is a partial cross-sectional view of an embodiment of the present application, according to line A-A of FIG. 2;
FIG. 5 is a perspective view of the control structure and drive structure mated in an embodiment of the present application;
FIG. 6 is a bottom view of the control structure and drive structure mated in an embodiment of the present application;
FIG. 7 is a perspective view of a gear rack and seal connection in an embodiment of the present application;
FIG. 8 is an enlarged view of portion D of FIG. 3 of the present application;
FIG. 9 is a perspective view of a measurement assembly according to an embodiment of the present application;
fig. 10 is a cross-sectional view of a measurement assembly in an embodiment of the present application.
In the figure: 1. a second connection pipe; 2. a first connection pipe; 3. a third connection pipe; 4. a control assembly; 41. a control box body; 42. a sliding rail; 43. a gear strip; 44. a gear ring; 45. a drive gear; 46. a driving member; 47. a sealing sheet; 471. sealing grooves; 472. a sealing strip; 48. a sliding block; 5. a bypass tube; 6. a control valve; 7. an exhaust pipe; 8. an air inlet pipe; 9. a measurement assembly; 91. a measurement cavity; 92. a light source cavity; 93. a light emitting source; 94. a monitor; 95. a convex lens; 96. a filter; 97. and a measuring box.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.
Before understanding the present application, it should be clear that the smoke meters on the market are various, and the detection principles that they use are different, for example: light scattering, beta-ray and ac electrostatic induction principle, etc. The pollution source smoke automatic calibration device can be suitable for calibrating most smoke meters. In the embodiments of the present application, a smoke meter using a light scattering method is mainly taken as an example, and a pollution source smoke automatic calibration device in the present application will be described in detail.
Specifically, a smoke dust instrument based on a light scattering method mainly uses a laser beam to irradiate a dust-containing gas stream, and when the laser irradiates on particles suspended in the smoke, scattered light is generated. Under the condition that the optical system and the dust property are certain, the scattered light intensity has a certain proportion relation with the dust concentration in the flue gas, namely, the higher the dust concentration is, the larger the scattered light intensity is. The intensity of the scattered light is detected by the monitor 94, and the mass concentration of dust in the flue gas is obtained by conversion based on the detected intensity of the scattered light. Since this is a mature prior art, the description thereof will not be repeated.
In order to solve the technical problems proposed in the background art, as shown in fig. 1 to 3, the present application provides a technical solution: an automatic calibration device for pollution source smoke comprises a calibration tube. In particular, the calibration tube of the present application is in use fixedly mounted on the exhaust stack (not shown) of the plant, i.e. in series with the exhaust stack of the plant. Specifically, the calibration tube may be any tubular structure, such as a circular tube structure in fig. 1 to 3, or a square tube structure or a tubular structure with an outer diameter decreasing or increasing along the axial line direction. And two control assemblies 4 are arranged on the calibration tube, and each control assembly 4 has at least two working states, namely an on state and an off state. When the two control components 4 are in an open state, the smoke at one end of the calibration tube can flow to the other end, and when the control components 4 are in a closed state, the communication of the smoke inside the calibration tube is cut off. Thus, it will be appreciated that the control assembly 4 in this application is similar to a valve, which is capable of controlling the opening and closing of the entire calibration tube. The purpose of the two control assemblies 4 is to be able to form a calibration cavity inside the calibration tube with the two control assemblies 4, thereby facilitating the calibration.
At the same time, a mounting station, an exhaust pipe 7 and an air inlet pipe 8 are also required to be arranged on the calibration pipe, and the mounting station is positioned between the two control components 4 and is used for mounting the measuring component 9. The air extraction pipe 7 and the air inlet pipe 8 are positioned between the two control assemblies 4, and the air extraction pipe 7 and the air inlet pipe 8 are communicated with a calibration cavity on the calibration pipe. Wherein, exhaust tube 7 is linked together with the aspiration pump for the inside gas of extraction calibration chamber, intake pipe 8 are connected with the gas cylinder, and the gas cylinder is used for carrying the calibration gas to the calibration intracavity portion through intake pipe 8.
In the following, a specific use method of the automatic calibration device for the smoke of the pollution source of the invention will be developed, if the measurement component 9 is required to monitor the smoke pollution source in the chimney, the two control components 4 are in an open state, the smoke in the chimney can circulate inside the calibration tube, namely, the smoke flows from the first end to the second end (the direction indicated by the line B-B in fig. 3) of the calibration tube, and at the moment, the measurement component 9 can monitor the smoke passing through the calibration tube in real time. If the measuring assembly 9 is to be calibrated, the two control assemblies 4 are brought into a closed state, and a calibration cavity is formed between the two control assemblies 4 and the calibration tube. Calibration gas is supplied to the interior of the calibration chamber through the gas inlet pipe 8, and at the same time, gas is extracted from the calibration chamber through the gas extraction pipe 7 so that the calibration gas can replace the original gas in the interior of the calibration chamber, thereby realizing calibration of the measurement assembly 9 with the calibration gas.
From the above, it follows that when calibration of the measuring assembly 9 is required, the gas inside the calibration chamber needs to be replaced. Therefore, the exhaust pipe 7 and the intake pipe 8 should be kept away as far as possible in order to minimize mixing of the raw gas inside the calibration chamber and the inputted calibration gas. That is, as shown in fig. 3, the suction pipe 7 and the intake pipe 8 are sequentially distributed in a vertically downward direction. Of course, in other embodiments of the present application, the air inlet pipe 8 may also be above the air extraction pipe 7.
When calibrating the measuring assembly 9, gas with different concentrations may be used, at this time, a gas cylinder filled with calibration gas with different particle concentrations may be connected with the gas inlet pipe 8 through a three-way pipe or a multi-way pipe (not shown in the figure), and an electromagnetic valve is arranged on a pipeline of the three-way pipe or the multi-way pipe, so as to control opening and closing of the electromagnetic valve to realize inputting of the calibration gas into the calibration cavity. Specifically, for example: if the first gas cylinder filled with the first calibration gas and the second gas cylinder filled with the second calibration gas are respectively communicated with the gas inlet pipe 8 through the three-way pipe. When the first calibration gas is needed to calibrate the measurement assembly 9, the electromagnetic valve on the connecting pipeline connected with the first gas cylinder on the three-way pipe is opened, and the electromagnetic valve on the connecting pipeline connected with the second gas cylinder on the three-way pipe is ensured to be in a closed state. The first calibration gas can be introduced into the calibration cavity.
Meanwhile, as can be seen from the foregoing, in the preferred embodiment of the present application, the exhaust pipe 7 and the intake pipe 8 are sequentially distributed in a vertically downward direction. Thus, in full scale calibration of the measurement assembly 9, calibration gas may be input into the calibration chamber in a high to low order based on the density of the calibration gas. The gas conveying method has the advantages that the high-density calibration gas is influenced by gravity and is positioned at the bottom of the calibration cavity, and the gas with lower density is positioned at the top of the calibration cavity, so that the high-density calibration gas and the low-density gas are prevented from being mixed, and the calibration accuracy is further influenced.
It will be clear that with the device of the present application, a full-scale calibration of the measuring assembly 9 can be achieved. However, most instruments are calibrated in a relatively long time. As can be seen from the foregoing, when the device of the present application performs calibration, the smoke circulation inside the calibration tube needs to be cut off, so that the smoke produced normally cannot be discharged through the calibration tube during the automatic calibration process, and in order to solve this technical problem, as shown in fig. 1 to 3, a bypass tube 5 is further designed in an embodiment of the present invention. Specifically, in the present embodiment, the calibration tube includes: the first connecting pipe 2, the second connecting pipe 1 and the third connecting pipe 3 are connected in sequence, and the second connecting pipe 1 is positioned between the two control components 4. And the first end of the bypass pipe 5 is communicated with the first connecting pipe 2, the second end of the bypass pipe 5 is communicated with the third connecting pipe 3, and the bypass pipe 5 is also provided with a control valve 6.
It should be clear that when the measuring assembly 9 is in the monitoring operation state, the control valve 6 on the bypass pipe 5 is closed, and the normally produced flue gas cannot pass through the bypass pipe 5, but can only be discharged from the calibration pipe (i.e. from the direction of line B-B in fig. 3), so that the measuring result of the measuring assembly 9 is not greatly affected. When the measuring assembly 9 is in the calibrated working state, the control valve 6 on the bypass pipe 5 is opened at this time, and the smoke gas produced normally can be discharged through the bypass pipe 5 (i.e. discharged from the direction of line C-C in fig. 3), so that the calibration result and normal production of the measuring assembly 9 are not affected.
Further, the control valve 6 in the present application may be any valve capable of automatic control in the prior art, including but not limited to an electric ball valve, an electric butterfly valve, and an electromagnetic valve.
From the foregoing, it is clear that in the present application, the main function of the two control assemblies 4 is to isolate a portion of the tube section of the calibration tube from the outside to form a calibration cavity. It is therefore easily conceivable that a valve capable of automatic control may be employed as the control unit 4 in the present application. Thus, in the present application, the control assembly 4 includes, but is not limited to, electrically operated ball valves, electrically operated butterfly valves, and solenoid valves.
Most valves in the market have large interfaces (such as interfaces formed by flange connection) during installation, and the interfaces are sealed by rubber pieces. In the industries of metallurgy, thermal power, cement, petrochemical industry and the like, the temperature of the discharged flue gas is high, and the sealing of the valve can be damaged by the high temperature, so that the sealing is not tight. The valve with the loose seal can influence the gas components in the calibration cavity, so that the calibration error is larger. In order to solve the above-mentioned technical problem, in a specific embodiment, as shown in fig. 4 to 6, the present application further proposes a control assembly 4, including: a control box 41, and a plurality of sealing sheets 47 positioned in the control box 41. As shown in fig. 3, the control box 41 and the calibration tube are in an integral structure, i.e. no gap exists between the control box 41 and the calibration tube. The control box 41 may be any shape, for example: square box, prismatic box or round box, etc. The present application does not limit the shape and configuration of the control box 41, and may be designed into any shape according to the design requirements. Preferably, in the present application, the control box 41 is a circular box, and the axis of the control box 41 coincides with the axis of the calibration tube.
As shown in fig. 5 and 6, when the control assembly 4 is in the closed state, the sealing sheets 47 are spliced to form a sealing whole sheet, the sealing whole sheet is used for cutting off the communication of the smoke inside the calibration tube, and when the control assembly 4 is in the open state, each sealing sheet 47 is in a dispersed state, so that the smoke at one end of the calibration tube can flow to the other end.
It should be clear that in the present application, the sealing sheet 47 may be of any shape, for example: square sheet, triangular sheet or fan-shaped sheet structures. In the present application, the sealing sheet 47 may be of a number such as: two, three, four, or five, etc. The present application does not impose any limitation on the shape configuration and number of the sealing pieces 47, and may be designed in any shape or in any number according to the design requirements. Preferably in this application, the sealing piece 47 has a fan-shaped sheet-like structure, and the fan-shaped tip of the sealing piece 47 faces the axis of the calibration tube. The control assembly 4 further comprises: control structures and driving structures are in one-to-one correspondence with the sealing sheets 47, wherein the control structures are used for controlling the radial movement of the sealing sheets 47 along the calibration tube, and the driving structures are used for driving the control structures. As shown in fig. 6 and 5, in the present embodiment, the sealing sheets 47 are formed in a circular sheet-like structure.
It should be clear that during long-term use, the sealing sheets 47 wear, so as to ensure that the sealing whole formed by each sealing sheet 47 has good sealing performance, i.e. so as to enhance the sealing performance of the circular sheet-like structure formed by the above-mentioned splicing. In a specific embodiment of the present application, as shown in fig. 8, the sealing sheet 47 is made of metal having elasticity, for example: stainless steel metal. And in the design, the sealing piece 47 is in a warping structure, the sealing piece 47 warps towards the direction close to the first inner wall of the control box 41, and the first inner wall is the inner wall on the control box 41, which is contacted with the sealing piece 47. Due to this warped design, there is a certain interference force between the sealing piece 47 and the first inner wall of the control box 41. The sealing sheet 47 can perform a sealing function well even if it wears during a long period of use.
In order to further improve the sealing performance between the adjacent sealing sheets 47, as shown in fig. 5 and 7, in an embodiment of the present application, the surfaces of the adjacent two sealing sheets 47 contacting each other are a first surface and a second surface, at least one sealing groove 471 is formed on the first surface, sealing strips 472 corresponding to the sealing grooves 471 one to one are provided on the second surface, and the sealing strips 472 are adapted to the sealing grooves 471. In order to enable the adjacent two sealing pieces 47 to be accurately abutted, the number of sealing grooves 471 is preferably one. And the sealing groove 471 is preferably formed in a triangular groove shape or a circular groove shape.
As can be seen from the above, the control structure is used in this application to control the radial movement of the sealing plate 47 along the calibration tube. That is, the control structure can control the sealing sheet 47 to perform a linear reciprocating motion. It is easily conceivable that there are a great number of structures capable of achieving linear reciprocating motion, which are all suitable for use as control structures in the present application. For example: the common threaded rod and thread block structure is that the threaded rod rotates to drive the thread block to do linear reciprocating motion; the gear rotates to drive the rack to perform linear reciprocating motion; an electric push rod structure; hydraulic push rod structure, etc.
In a specific embodiment of the present application, as shown in fig. 4 and 6, the control structure includes: a sliding rail 42 and a gear bar 43. Wherein, the sliding rail 42 is arranged on the inner wall of the control box 41, the gear bar 43 is connected with the sealing piece 47, and the gear bar 43 is provided with a sliding block 48, and the sliding block 48 can form sliding connection with the sliding rail 42.
Based on the control structure in the above-described embodiment, the present application proposes a driving structure corresponding thereto. The driving structure includes: and driving gears 45 corresponding to the respective gear bars 43 one by one, and the driving gears 45 are engaged with the corresponding gear bars 43. And driving members 46 corresponding to the driving gears 45 one by one, the driving members 46 may be any device capable of driving the driving gears 45 to perform self-rotation, for example: a servo motor. Compared with a common valve structure, the interface formed between the servo motor and the control box 41 is smaller, and air is not easy to enter.
Meanwhile, in order to reduce the number of driving members 46, the interface formed between the driving members 46 and the control box 41 is further reduced. In another embodiment of the present application, the driving structure further includes: the gear ring 44, the axis of the gear ring 44 coincides with the axis of the calibration tube. In the present application, the gear ring 44 refers to an annular gear-bearing structure, which as shown in fig. 4 and 6, the gear ring 44 meshes with each drive gear 45. At this time, when any one of the plurality of driving gears 45 rotates, the other driving gears 45 also rotate synchronously by the gear ring 44. Based on this design, it is necessary to install a driving member 46, and the driving member 46 is used to drive any one of the plurality of driving gears 45 to rotate.
It should be clear that in order to enhance the driving stability of the device of the present application, the thickness of the driving gear 45 along the axis of the calibration tube is greater than the sum of the thicknesses of the gear strip 43 and the gear ring 44 when designing.
In summary, the pollution source flue gas automatic calibration device can realize full-range calibration of the flue gas monitoring equipment based on calibration gases with different concentrations, and meanwhile, the calibration effect of the device is not influenced by pollutants attached to the flue gas monitoring equipment.
Furthermore, the method and the device can be mainly used for calibrating the dust meter. Based on this, the present application also proposes a measuring assembly 9, as shown in fig. 9 and 10, the measuring assembly 9 comprising: a measuring box 97 with one end open, a light source 93, a monitor 94, a convex lens 95 and a filter 96. Wherein the measuring chamber 91 and the light source chamber 92 which are not communicated with each other are formed in the measuring case 97. The light source 93 is disposed in the light source chamber 92, the monitor 94 and the convex lens 95 are disposed in the measuring chamber 91, and the filter 96 is disposed at the opening of the measuring box 97.
It should be clear that the filter 96 is mainly used for filtering contaminants in the flue gas in this application, preventing contaminants from entering the measuring cavity 91 to affect the monitor 94 and the convex lens 95. However, it does not block the light from being received by the monitor 94, so a transparent film or glass may be used as the filter 96, and the filter 96 may be replaced by regular maintenance.
It should also be clear that the measurement assembly 9 proposed in the embodiments of the present application is a back-scattering smoke meter, but does not represent that the device in the present application is only suitable for calibration of a back-scattering smoke meter, but is also suitable for calibration of a front-scattering smoke meter. Meanwhile, the device is not only limited to the automatic calibration of the smoke detector, but also suitable for the automatic calibration of other smoke monitoring equipment, including but not limited to a humidity monitor, a VOC monitor and a smoke monitor.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An automatic pollution source smoke calibrating device, comprising:
the device comprises a calibration tube, wherein two control assemblies (4) are arranged on the calibration tube, each control assembly (4) is provided with at least two working states, namely an open state and a closed state, when the two control assemblies (4) are in the open state, smoke at one end of the calibration tube can flow to the other end, and when the control assemblies (4) are in the closed state, the communication of the smoke inside the calibration tube is cut off;
the installation station is arranged on the calibration tube, is positioned between the two control assemblies (4) and is used for installing the measuring assembly (9);
and the exhaust pipe (7) and the air inlet pipe (8) are communicated with the calibration pipe, and the exhaust pipe (7) and the air inlet pipe (8) are positioned between the two control assemblies (4).
2. The pollution source flue gas automatic calibration device according to claim 1, wherein the control assembly (4) comprises:
the control box body (41), the control box body (41) is a round box body, and the axial lead of the control box body (41) is coincident with the axial lead of the calibration tube;
the control box comprises a control box body (41) and is characterized by comprising a plurality of sealing sheets (47), wherein the sealing sheets (47) are arranged in the control box body (41), when the control assembly (4) is in a closed state, the sealing sheets (47) are spliced to form a sealing whole sheet, the sealing whole sheet is used for cutting off the communication of smoke inside the calibration tube, and when the control assembly (4) is in an open state, the sealing sheets (47) are in a dispersed state so that the smoke at one end of the calibration tube can flow to the other end.
3. The automatic calibration device for fume of pollution sources according to claim 2, characterized in that said sealing plate (47) has a sector-shaped sheet-like structure, the sector tip of said sealing plate (47) being directed towards the axis of said calibration tube, said control assembly (4) further comprising:
control structures in one-to-one correspondence with each of the sealing sheets (47) for controlling the radial movement of the sealing sheets (47) along the calibration tube;
and the driving structure is used for driving the control structure.
4. A pollution source flue gas automatic calibration device according to claim 3, wherein the surfaces of two adjacent sealing sheets (47) are respectively a first surface and a second surface, at least one sealing groove (471) is formed in the first surface, sealing strips (472) corresponding to the sealing grooves (471) one by one are arranged on the second surface, and the sealing strips (472) are matched with the sealing grooves (471).
5. A pollution source flue gas automatic calibration device according to claim 3, wherein the control structure comprises:
a slide rail (42), wherein the slide rail (42) is arranged on the inner wall of the control box body (41);
the gear strip (43), gear strip (43) with sealing piece (47) is connected, just be provided with slider (48) on gear strip (43), slider (48) can with sliding connection is formed in sliding rail (42).
6. The pollution source flue gas automatic calibration device according to claim 5, wherein the driving structure comprises:
drive gears (45) corresponding to the gear strips (43) one by one, wherein the drive gears (45) are meshed with the corresponding gear strips (43);
a gear ring (44), the axis of the gear ring (44) coincides with the axis of the calibration tube, and the gear ring (44) is meshed with each of the drive gears (45);
and a driving member (46), wherein the driving member (46) is used for driving any one of a plurality of the driving gears (45) to rotate.
7. A pollution source fume automatic calibration device according to claim 3, wherein said sealing sheet (47) has a warp-like structure, said sealing sheet (47) being warped in a direction approaching a first inner wall of said control box (41), said first inner wall being an inner wall of said control box (41) in contact with said sealing sheet (47).
8. The automatic calibration device for fume of pollution sources according to claim 1, characterized in that said extraction duct (7) and said intake duct (8) are distributed in succession in a vertically downward direction.
9. The pollution source flue gas automatic calibration device according to any one of claims 1 to 8, wherein the calibration tube comprises:
the first connecting pipe (2), the second connecting pipe (1) and the third connecting pipe (3) are sequentially connected, and the second connecting pipe (1) is positioned between the two control assemblies (4);
the bypass pipe (5), the first end of bypass pipe (5) with first connecting pipe (2) are linked together, the second end of bypass pipe (5) with third connecting pipe (3) are linked together, just still install control valve (6) on bypass pipe (5).
10. The pollution source flue gas automatic calibration device according to any one of claims 1 to 8, further comprising a measurement assembly (9), the measurement assembly (9) comprising:
a measuring box (97) with one end open, wherein a measuring cavity (91) and a light source cavity (92) which are not communicated with each other are formed in the measuring box (97);
a light-emitting source (93) disposed within the light source chamber (92);
a monitor (94) and a convex lens (95) disposed within the measurement cavity (91);
and a filter (96) provided at an opening of the measurement box (97).
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| CN202310671123.7A CN116429652A (en) | 2023-06-08 | 2023-06-08 | Pollution source flue gas automatic calibration device |
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| CN202310671123.7A CN116429652A (en) | 2023-06-08 | 2023-06-08 | Pollution source flue gas automatic calibration device |
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Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4134293A (en) * | 1976-03-20 | 1979-01-16 | Robert Bosch Gmbh | Pressure differential indicating apparatus for a hydraulic measuring bridge and its associated measuring piston |
| US4190085A (en) * | 1976-06-08 | 1980-02-26 | Halton Oy | Gas flow regulating and measuring apparatus |
| US5195356A (en) * | 1991-07-11 | 1993-03-23 | Houston Industries Incorporated | Test assembly for flue gas monitors |
| JPH10206774A (en) * | 1997-01-24 | 1998-08-07 | Nec Eng Ltd | Rotary scanning mechanism |
| JPH10239237A (en) * | 1997-02-28 | 1998-09-11 | Ngk Insulators Ltd | Method and device for duct concentration measurement |
| JP2000171358A (en) * | 1998-12-02 | 2000-06-23 | Shimadzu Corp | Gas analyzer |
| US20030000281A1 (en) * | 2001-06-28 | 2003-01-02 | Rel-Tek | Automatic gas sensor calibration system |
| KR101121552B1 (en) * | 2011-12-23 | 2012-03-06 | 동우옵트론 주식회사 | In-situ stack gas analyzer having the calibrating device |
| JP2012215567A (en) * | 2011-03-31 | 2012-11-08 | Dkk Toa Corp | Non-extractive gas analyzer |
| CN104359164A (en) * | 2014-10-17 | 2015-02-18 | 广东美的制冷设备有限公司 | Outdoor unit of air conditioner and control method of same |
| CN104793002A (en) * | 2015-03-13 | 2015-07-22 | 中山市环境监测站 | Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof |
| CN106370792A (en) * | 2016-11-01 | 2017-02-01 | 张嘉怡 | Indoor air quality monitoring system |
| CN106706487A (en) * | 2016-12-26 | 2017-05-24 | 山东省环境保护信息中心 | Remote full-flow calibration system for flue gas and ambient gas online monitoring equipment |
| CN107338875A (en) * | 2017-09-01 | 2017-11-10 | 成都科创城科技有限公司 | One kind protection building deformation joint servicing unit |
| CN109324005A (en) * | 2018-10-29 | 2019-02-12 | 安徽皖仪科技股份有限公司 | The calibration system and method for ultraviolet flue gas analyzer |
| CN110057980A (en) * | 2019-05-16 | 2019-07-26 | 广州长德环境研究院有限公司 | A kind of on-line gas analysis instrument state automatic monitoring device |
| CN210326470U (en) * | 2019-10-28 | 2020-04-14 | 北京盛想科技有限公司 | Linear infrared laser |
| CN113358588A (en) * | 2021-05-31 | 2021-09-07 | 河南省计量科学研究院 | Online dual-mode calibration detection method and equipment for motor vehicle exhaust remote sensing monitoring device |
| CN214844655U (en) * | 2021-04-30 | 2021-11-23 | 深圳市云顶自动化技术有限公司 | Calibration structure of back scattering smoke and dust appearance |
| JP2021183973A (en) * | 2016-04-29 | 2021-12-02 | トライコーン テック タイワン | System and method for in-line monitoring of airborne contamination and process health |
| CN115127998A (en) * | 2021-03-26 | 2022-09-30 | 北京凯尔科技发展有限公司 | Gas analysis device with automatic calibration function and calibration method |
| CN115290570A (en) * | 2022-10-09 | 2022-11-04 | 南京市计量监督检测院 | Auxiliary calibration device and auxiliary calibration method for automobile exhaust detection system |
| CN218673366U (en) * | 2022-12-09 | 2023-03-21 | 二重（德阳）重型装备有限公司 | Titanium laser bomb laser ignition device |
-
2023
- 2023-06-08 CN CN202310671123.7A patent/CN116429652A/en active Pending
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4134293A (en) * | 1976-03-20 | 1979-01-16 | Robert Bosch Gmbh | Pressure differential indicating apparatus for a hydraulic measuring bridge and its associated measuring piston |
| US4190085A (en) * | 1976-06-08 | 1980-02-26 | Halton Oy | Gas flow regulating and measuring apparatus |
| US5195356A (en) * | 1991-07-11 | 1993-03-23 | Houston Industries Incorporated | Test assembly for flue gas monitors |
| JPH10206774A (en) * | 1997-01-24 | 1998-08-07 | Nec Eng Ltd | Rotary scanning mechanism |
| JPH10239237A (en) * | 1997-02-28 | 1998-09-11 | Ngk Insulators Ltd | Method and device for duct concentration measurement |
| JP2000171358A (en) * | 1998-12-02 | 2000-06-23 | Shimadzu Corp | Gas analyzer |
| US20030000281A1 (en) * | 2001-06-28 | 2003-01-02 | Rel-Tek | Automatic gas sensor calibration system |
| JP2012215567A (en) * | 2011-03-31 | 2012-11-08 | Dkk Toa Corp | Non-extractive gas analyzer |
| KR101121552B1 (en) * | 2011-12-23 | 2012-03-06 | 동우옵트론 주식회사 | In-situ stack gas analyzer having the calibrating device |
| CN104359164A (en) * | 2014-10-17 | 2015-02-18 | 广东美的制冷设备有限公司 | Outdoor unit of air conditioner and control method of same |
| CN104793002A (en) * | 2015-03-13 | 2015-07-22 | 中山市环境监测站 | Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof |
| JP2021183973A (en) * | 2016-04-29 | 2021-12-02 | トライコーン テック タイワン | System and method for in-line monitoring of airborne contamination and process health |
| CN106370792A (en) * | 2016-11-01 | 2017-02-01 | 张嘉怡 | Indoor air quality monitoring system |
| CN106706487A (en) * | 2016-12-26 | 2017-05-24 | 山东省环境保护信息中心 | Remote full-flow calibration system for flue gas and ambient gas online monitoring equipment |
| CN107338875A (en) * | 2017-09-01 | 2017-11-10 | 成都科创城科技有限公司 | One kind protection building deformation joint servicing unit |
| CN109324005A (en) * | 2018-10-29 | 2019-02-12 | 安徽皖仪科技股份有限公司 | The calibration system and method for ultraviolet flue gas analyzer |
| CN110057980A (en) * | 2019-05-16 | 2019-07-26 | 广州长德环境研究院有限公司 | A kind of on-line gas analysis instrument state automatic monitoring device |
| CN210326470U (en) * | 2019-10-28 | 2020-04-14 | 北京盛想科技有限公司 | Linear infrared laser |
| CN115127998A (en) * | 2021-03-26 | 2022-09-30 | 北京凯尔科技发展有限公司 | Gas analysis device with automatic calibration function and calibration method |
| CN214844655U (en) * | 2021-04-30 | 2021-11-23 | 深圳市云顶自动化技术有限公司 | Calibration structure of back scattering smoke and dust appearance |
| CN113358588A (en) * | 2021-05-31 | 2021-09-07 | 河南省计量科学研究院 | Online dual-mode calibration detection method and equipment for motor vehicle exhaust remote sensing monitoring device |
| CN115290570A (en) * | 2022-10-09 | 2022-11-04 | 南京市计量监督检测院 | Auxiliary calibration device and auxiliary calibration method for automobile exhaust detection system |
| CN218673366U (en) * | 2022-12-09 | 2023-03-21 | 二重（德阳）重型装备有限公司 | Titanium laser bomb laser ignition device |
Non-Patent Citations (1)
| Title |
|---|
| 美国石油学会: "《炼油厂仪表及调节系统安装手册 第一分册 工业过程仪表及调节系统》", 中国轻工业出版社, pages: 368 * |
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