CN219201509U

CN219201509U - Smoke and dust flue gas tester

Info

Publication number: CN219201509U
Application number: CN202223276860.7U
Authority: CN
Inventors: 康鹏桂; 潘海鹏; 刘晓明; 彭超
Original assignee: Shandong Jingfei Technology Co ltd
Current assignee: Shandong Jingfei Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-06-16
Anticipated expiration: 2032-12-07

Abstract

The smoke and dust flue gas tester comprises a shell box body and a shell upper cover, wherein an instrument front panel is fixedly arranged on the shell box body, and a smoke and dust air inlet, a smoke temperature measuring port, a positive pressure air port, a negative pressure air port, a flue gas air inlet, a display screen and a keyboard are sequentially and fixedly arranged on the instrument front panel. According to the principle and the test characteristics of electrochemical sensors, a self-calibration compensation principle is provided in a smoke and dust tester, the self-compensation principle mainly adopts a double-sensor detection technology, in the actual detection process, only one sensor works, and the other sensor adopts a method of working regularly to calibrate the sensor which works actually, and the adoption of the compensation technology solves the problems that the sensor with linear output realizes self calibration in a circuit, and improves the stability and portability of the gas test of the smoke and dust tester.

Description

Smoke and dust flue gas tester

Technical Field

The utility model belongs to the field of environmental air monitoring, and particularly relates to a smoke and dust smoke tester.

Background

The smoke and dust tester uses a pitot tube parallel constant-speed sampling method to collect particles in the exhaust gas of a fixed pollution source, uses a filtering weighing method to measure the smoke and dust quality, and uses a constant potential electrolysis method to qualitatively and quantitatively measure the smoke and dust components. The method can be applied to the measurement of the emission concentration, the converted concentration and the total emission amount of fixed pollution source particulate matters of various boilers, flues, industrial kilns and the like and the measurement of the dust removal and desulfurization efficiency of equipment; automatically measuring parameters such as flue gas dynamic pressure, flue gas static pressure, flow rate, pressure before a flowmeter, temperature before the flowmeter, flue gas temperature, moisture content, O2, SO2, CO, NO2, H2S, CO2 concentration and the like; because of the characteristics of the electrochemical sensor, the electrochemical sensor has obvious defects in use, and in the process of absorbing or releasing oxygen in operation to change the resistance of the gas sensor, after a period of operation or after absorbing some impurity gas, especially after operation in an environment with higher concentration of the detected gas, a part of metal oxide film in the sensor becomes insensitive to the detected gas, so that the sensor has great errors, and therefore, the smoke and dust and flue gas tester is designed.

Disclosure of Invention

The utility model provides a smoke and dust smoke tester which is used for solving the defects in the prior art.

The utility model is realized by the following technical scheme:

the utility model provides a smoke and dust flue gas tester, including the shell box, the shell upper cover, the fixed instrument front panel that is equipped with on the shell box, fixed mounting smoke and dust air inlet in proper order on the instrument front panel, the temperature measurement port of cigarette, the malleation gas port, the negative pressure gas port, the flue gas air inlet, the display screen, the keyboard, the fixed smoke and dust pump that is equipped with in proper order in the shell box, first gas flowmeter, the gas pump, the second gas flowmeter, gas sensor, the smoke and dust air inlet, the smoke and dust pump, first gas flowmeter passes through the pipeline and establishes ties in proper order and constitutes smoke and detect the pipeline, the smoke and dust air inlet, the gas pump, the second gas flowmeter, gas sensor passes through the pipeline and establishes ties in proper order and constitutes smoke and detect the pipeline, still fixed differential pressure sensor in proper order in the shell box, the battery, the controller, malleation gas port passes through two input ports of pipeline intercommunication connection differential pressure sensor in proper order with the negative pressure gas port, its characterized in that: the gas sensor comprises a main gas sensor and an auxiliary gas sensor, the gas outlet end of the second gas flowmeter is communicated with the gas inlet end of the three-way pipe, the gas outlet end of one side of the three-way pipe is communicated with the main gas sensor, the gas outlet end of the other side of the three-way pipe is communicated with the gas inlet end of the electromagnetic valve, and the gas outlet end of the electromagnetic valve is communicated with the auxiliary gas sensor; the smoke temperature measuring port, the display screen, the keyboard, the smoke pump, the first gas flowmeter, the smoke pump, the second gas flowmeter, the main gas sensor, the auxiliary gas sensor, the differential pressure sensor, the electromagnetic valve and the battery are respectively connected with the controller circuit.

According to the smoke and dust smoke tester, the main gas sensor and the auxiliary gas sensor are respectively fixed on the corresponding box bodies, the two ends of the box bodies are respectively provided with the vent holes, the vent hole on one side of the box body on the left side is communicated and connected with the air outlet end on one side of the three-way pipe, and the vent hole on one side of the box body on the right side is communicated and connected with the air inlet end of the electromagnetic valve; the side of the box body is respectively provided with a plurality of through grooves, the through grooves are respectively provided with a main gas sensor or an auxiliary gas sensor, and the detection end of the main gas sensor and the detection end of the auxiliary gas sensor are respectively communicated with the inside of the corresponding box body.

According to the smoke and dust smoke tester, the exhaust four-way pipe is embedded and installed at the bottom of the shell box body, and one end of the exhaust four-way pipe is communicated with the outside of the shell box body; the other ports of the exhaust four-way pipe are sequentially connected with the vent holes at the other sides of the two box bodies and the first gas flowmeter through pipelines, and one-way valves are arranged on the pipelines among the box bodies, the first gas flowmeter and the exhaust four-way pipe.

The smoke and dust flue gas tester is characterized in that a switching power supply is fixedly arranged in the shell box body, an alternating current interface, a direct current interface, a USB interface and a switch are further arranged on the front panel of the tester, and the alternating current interface, the direct current interface, the USB interface, the switch and the switching power supply are respectively and electrically connected with the controller through circuits.

The smoke and dust smoke tester is characterized in that the smoke and dust pump and the pipeline communicated with the inlet and the outlet of the smoke and dust pump are all silica gel pipes.

According to the smoke and dust smoke tester, the shell upper cover 2 is rotatably arranged on the shell box body 1 through the hinge shaft, and a quick lock catch is arranged between the shell box body 1 and the shell upper cover 2.

The smoke and dust smoke tester is characterized in that the side surfaces of the smoke and dust pump, the smoke and dust pump and the controller are respectively provided with the cooling fans.

The smoke and dust smoke tester is characterized in that the front panel of the tester is also provided with an ambient temperature sensor.

The utility model has the advantages that: according to the principle and the test characteristics of electrochemical sensors, a self-calibration compensation principle is provided in a smoke and dust tester, the self-compensation principle mainly adopts a double-sensor detection technology, in the actual detection process, only one sensor works, and the other sensor adopts a method of working regularly to calibrate the sensor which works actually, and the adoption of the compensation technology solves the problems that the sensor with linear output realizes self calibration in a circuit, and improves the stability and portability of the gas test of the smoke and dust tester. When the device is used, the HC-type heating low-concentration smoke sampling tube is used as an external sampling tube, the smoke sampling tube of the sampling tube is communicated and connected with the smoke air inlet, the Pitot tube negative port of the sampling tube is communicated and connected with the negative pressure air port, the Pitot tube positive port of the sampling tube is communicated and connected with the positive pressure air port, the smoke temperature line port of the sampling tube is communicated and connected with the smoke temperature measuring port, and when the sampling tube is electrified and works, the controller controls the smoke pump and the first gas flowmeter to work through the keyboard, the smoke pump pumps air at a high speed to finish sampling particulate matters in fixed pollution source gas, and meanwhile, the first gas flowmeter can sample the smoke amount as much as possible to finish detection of smoke; meanwhile, the differential pressure sensor can measure the differential pressure of the gas; when the smoke is detected, the controller is controlled by the keyboard to control the electromagnetic valve to be opened, the smoke pump and the second gas flowmeter work, smoke in the fixed pollution source enters the three-way pipe through the smoke inlet, the smoke pump and the second gas flowmeter, one part of smoke enters the auxiliary gas sensor through the electromagnetic valve, and the other part of smoke enters the main gas sensor, so that the main gas sensor and the auxiliary gas sensor measure the concentration of gas components in the fixed pollution source at the same time, and the main gas sensor can be calibrated by the auxiliary gas sensor; the electromagnetic valve is closed after being opened briefly, and at the moment, only the main gas sensor measures the concentration of the gas component in the fixed pollution source, and the auxiliary gas sensor can keep higher precision due to the fact that the auxiliary gas sensor is used briefly, so that the main gas sensor is calibrated by taking the measured data of the auxiliary gas sensor as a reference.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model; FIG. 2 is a schematic diagram of a flue gas detection duct structure; FIG. 3 is a schematic diagram of a smoke detection conduit structure; FIG. 4 is a schematic diagram of a differential pressure sensing architecture; FIG. 5 is a perspective view of the present utility model; FIG. 6 is a schematic view of the structure of the four-way pipe; fig. 7 is a circuit block diagram of the present utility model.

Reference numerals: 1. the device comprises a shell box body, 2, a shell upper cover, 3, an instrument front panel, 4, a smoke gas inlet, 5, a smoke temperature measuring port, 6, a positive pressure gas port, 7, a negative pressure gas port, 8, a smoke gas inlet, 9, a display screen, 10, a keyboard, 11, a smoke pump, 12, a first gas flowmeter, 13, a smoke gas pump, 14, a second gas flowmeter, 15, a gas sensor, 16, a differential pressure sensor, 17, a three-way pipe, 18, an electromagnetic valve, 151, a main gas sensor, 152, a secondary gas sensor, 20, a box body, 21, a vent hole, 22, a through groove, 30, an exhaust four-way pipe, 40, a switching power supply, 41, an alternating current interface, 42, a direct current interface, 43, a USB interface, 44, a switch, 80 and a temperature sensor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The smoke and dust flue gas tester, as shown in figures 1, 2, 3, 4, 5, 6 and 7, comprises a shell box body 1 and a shell upper cover 2, wherein an instrument front panel 3 is fixedly arranged on the shell box body 1, a smoke and dust air inlet 4, a smoke temperature measuring port 5, a positive pressure air port 6, a negative pressure air port 7, a flue gas air inlet 8, a display screen 9 and a keyboard 10 are sequentially and fixedly arranged on the instrument front panel 3, and the display screen 9 mainly serves to display information of the tester; the keyboard 10 is used for controlling the control information on the display screen 9, the interior fixed smoke and dust pump 11 that is equipped with in proper order of shell box 1, first gas flowmeter 12, smoke and dust pump 13, second gas flowmeter 14, gas sensor 15, smoke and dust air inlet 4, smoke and dust pump 11, first gas flowmeter 12 passes through the pipeline and establishes ties in proper order and form smoke and dust detection pipeline, smoke and dust air inlet 8, smoke and dust pump 13, second gas flowmeter 14, gas sensor 15 passes through the pipeline and establishes ties in proper order and form smoke and gas detection pipeline, still fixed differential pressure sensor 16 in proper order in the shell box 1, a battery, a controller, the battery is the controller power supply, positive pressure gas port 6 and negative pressure gas port 7 pass through two input ports of pipeline intercommunication connection differential pressure sensor 16 in proper order, differential pressure sensor 26 can detect the pressure difference between positive pressure gas port 6 and the negative pressure gas port 7, its characterized in that: the gas sensor 15 comprises a main gas sensor 151 and a secondary gas sensor 152, the gas outlet end of the second gas flowmeter 14 is communicated with the gas inlet end of the three-way pipe 17, the gas outlet end of one side of the three-way pipe 17 is communicated with the main gas sensor 151, the gas outlet end of the other side of the three-way pipe 17 is communicated with the gas inlet end of the electromagnetic valve 18, and the gas outlet end of the electromagnetic valve 18 is communicated with the secondary gas sensor 152; the smoke temperature measuring port 5, the display screen 9, the keyboard 10, the smoke pump 11, the first gas flowmeter 12, the smoke pump 13, the second gas flowmeter 14, the main gas sensor 151, the auxiliary gas sensor 152, the differential pressure sensor 16, the electromagnetic valve 18 and the battery are respectively connected with a controller circuit. According to the principle and the test characteristics of electrochemical sensors, a self-calibration compensation principle is provided in a smoke and dust tester, the self-compensation principle mainly adopts a double-sensor detection technology, in the actual detection process, only one sensor works, and the other sensor adopts a method of working regularly to calibrate the sensor which works actually, and the adoption of the compensation technology solves the problems that the sensor with linear output realizes self calibration in a circuit, and improves the stability and portability of the gas test of the smoke and dust tester. When the utility model is used, the HC-3051 type heating low-concentration smoke sampling tube is used as an external sampling tube, the smoke sampling tube of the sampling tube is communicated and connected with the smoke air inlet 4, the pitot tube negative port of the sampling tube is communicated and connected with the negative pressure air port 7, the pitot tube positive port of the sampling tube is communicated and connected with the positive pressure air port 6, the smoke temperature line port of the sampling tube is communicated and connected with the smoke temperature measuring port 5, and when the sampling tube is electrified, the controller is controlled by the keyboard 10, the controller enables the smoke pump 11 and the first gas flowmeter 12 to work, the sampling of particles in the fixed pollution source gas is completed through the rapid air suction of the smoke pump 11, and meanwhile, the first gas flowmeter 12 can sample the smoke quantity as much as possible, so as to complete the detection of smoke; while the differential pressure sensor 16 is capable of measuring differential gas pressure; when the smoke is detected, the controller is controlled by the keyboard 10, the electromagnetic valve 18 is controlled to be opened, the smoke pump 13 and the second gas flowmeter 14 work, smoke in the fixed pollution source enters the three-way pipe 17 through the smoke inlet 8, the smoke pump 13 and the second gas flowmeter 14, part of smoke enters the auxiliary gas sensor 152 through the electromagnetic valve 18, and the other part of smoke enters the main gas sensor 151, at the moment, the main gas sensor 151 and the auxiliary gas sensor 152 measure the concentration of gas components in the fixed pollution source at the same time, and at the moment, the main gas sensor 151 can be calibrated by the auxiliary gas sensor 152; the solenoid valve 18 is opened briefly and then closed, and at this time, only the main gas sensor 151 measures the concentration of the gas component in the fixed pollution source, and since the sub gas sensor 152 is used only briefly, the sub gas sensor 152 can be kept with high accuracy, and the main gas sensor 151 is calibrated with reference to the measurement data of the sub gas sensor 152.

Specifically, as shown in the figure, the main gas sensor 151 and the auxiliary gas sensor 152 in this embodiment are respectively fixed on the corresponding box body 20, the two ends of the box body 20 are respectively provided with a vent hole 21, the vent hole 21 on the left side of the box body 20 is connected with the air outlet end on the side of the three-way pipe 17 in a communicating manner, and the vent hole 21 on the right side of the box body 20 is connected with the air inlet end of the electromagnetic valve 18 in a communicating manner; the side of the box body 20 is respectively provided with a plurality of through grooves 22, a main gas sensor 151 or a secondary gas sensor 152 is respectively arranged in the through grooves 22, the main gas sensor 151 is provided with a plurality of electrochemical sensors, the electrochemical sensors can respectively detect the contents of components such as O2, SO2, CO, NO2 and the like in the gas to be detected, the secondary gas sensor 152 is also provided with a plurality of sensors and corresponds to the main gas sensor one by one, the detection ends of the main gas sensor 151 and the secondary gas sensor 152 are respectively communicated with the inside of the corresponding box body 20. The flue gas in the three-way pipe 17 can directly enter the box body 20 on the left side, the flue gas in the electromagnetic valve 18 can also enter the box body 20 on the right side, the main gas sensor 151 and the auxiliary gas sensor 152 can respectively detect the components of the flue gas in the corresponding box body 20, detected data are transmitted to the controller, and meanwhile, the detected data information is displayed through the display screen 9.

Specifically, as shown in the figure, the bottom of the housing box 1 in this embodiment is embedded with an exhaust four-way pipe 30, and one end of the exhaust four-way pipe 30 is communicated with the outside of the housing box 1; the other ports of the exhaust four-way pipe 30 are sequentially connected with the vent holes 21 at the other sides of the two box bodies 20 and the first gas flow meter 12 through pipelines, and one-way valves, which are not shown in the figure, are arranged on the pipelines among the box bodies 20, the first gas flow meter 12 and the exhaust four-way pipe 30. The flue gas and the smoke dust exhausted by the box body 20 and the first gas flowmeter 12 can be exhausted out of the shell box body 1 through the exhaust four-way pipe 30 respectively, and the one-way valve can reduce the mutual influence of the flue gas and the smoke dust on the smoke dust detection pipeline and the flue gas detection pipeline, so that the in-out precision is improved; and exhaust port of exhaust four-way pipe 30 can be connected through the connector intercommunication with the gas sampling bottle, and the smoke and dust that smoke and dust pump 11 during operation gathered can be collected in the gas sampling bottle through exhaust four-way pipe 30.

Further, as shown in the figure, in the embodiment, a switching power supply 40 is further fixed in the housing case 1, and an ac interface 41, a dc interface 42, a USB interface 43, and a switch 44 are further disposed on the instrument front panel 3, and the ac interface 41, the dc interface 42, the USB interface 43, the switch 44, and the switching power supply 40 are electrically connected with the controller through circuits respectively. The ac interface 41 is used for providing 220V ac to the switching power supply, which converts the ac into dc and stores the dc in the battery; the direct current interface 42 can directly supply 24V direct current to the controller, and can also output 24V direct current to external equipment; the USB interface 43 is mainly used for importing and exporting related information; the switch 44 is used to control the smoke tester to turn on and off.

Further, as shown in the figure, the pipelines of the smoke pump 11 and the smoke pump 13 in this embodiment are all silica gel pipes. Vibration generated when the smoke pump 11 and the smoke pump 13 are operated can be relieved through the silicone tube.

Further, as shown in the figure, in this embodiment, the upper cover 2 of the housing is rotatably mounted on the housing case 1 through a hinge shaft, and a quick lock is provided between the housing case 1 and the upper cover 2 of the housing. The upper port of the shell box body 1 can be covered by the shell upper cover 2 through quick locking, and the shell box body 1 and the shell upper cover 2 are relatively fixed; the quick lock is opened, and the housing upper cover 2 can be opened by rotating along the hinge shaft.

Further, as shown in the figure, the sides of the smoke pump 11, the smoke pump 13 and the controller in this embodiment are respectively provided with a cooling fan, which is not shown in the figure. The heat radiation fan is powered, and the heat radiation fan can radiate heat to the smoke pump 11, the smoke pump 13 and the controller respectively.

Further, as shown in the figure, the front panel 3 of the apparatus of this embodiment is further provided with an ambient temperature sensor 80. The ambient temperature sensor 80 is used to measure the temperature of the external environment and to communicate the measurement to the controller.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A smoke and dust flue gas tester, its characterized in that: including shell box (1), shell upper cover (2), the fixed instrument front panel (3) that is equipped with on shell box (1), on instrument front panel (3) in proper order fixed mounting smoke and dust air inlet (4), flue gas temperature measurement port (5), malleation gas port (6), negative pressure gas port (7), flue gas air inlet (8), display screen (9), keyboard (10), be equipped with smoke and dust pump (11) in proper order in shell box (1), first gas flowmeter (12), flue gas pump (13), second gas flowmeter (14), gas sensor (15), smoke and dust air inlet (4), smoke and dust pump (11), first gas flowmeter (12) are established ties in proper order through the pipeline and are constituteed smoke and dust detection pipeline, smoke and dust air inlet (8), smoke and dust pump (13), second gas flowmeter (14), gas sensor (15) are established ties in proper order through the pipeline and are constituteed smoke and are detected the pipeline, still fixed in proper order in shell box (1) are equipped with pressure difference sensor (16), a battery, a controller, positive pressure gas port (6) and negative pressure gas port (7) are connected two input ports of pressure difference sensor (16) through pipeline intercommunication in proper order, its characterized in that: the gas sensor (15) comprises a main gas sensor (151) and an auxiliary gas sensor (152), the gas outlet end of the second gas flowmeter (14) is communicated with the gas inlet end of the three-way pipe (17), the gas outlet end of one side of the three-way pipe (17) is communicated with the main gas sensor (151), the gas outlet end of the other side of the three-way pipe (17) is communicated with the gas inlet end of the electromagnetic valve (18), and the gas outlet end of the electromagnetic valve (18) is communicated with the auxiliary gas sensor (152); the smoke temperature measuring port (5), the display screen (9), the keyboard (10), the smoke pump (11), the first gas flowmeter (12), the smoke pump (13), the second gas flowmeter (14), the main gas sensor (151), the auxiliary gas sensor (152), the differential pressure sensor (16), the electromagnetic valve (18) and the battery are respectively connected with the controller circuit.

2. A smoke tester according to claim 1, wherein: the main gas sensor (151) and the auxiliary gas sensor (152) are respectively fixed on the corresponding box bodies (20), the two ends of the box bodies (20) are respectively provided with vent holes (21), the vent holes (21) on one side of the box body (20) on the left side are communicated and connected with the air outlet end on one side of the three-way pipe (17), and the vent holes (21) on one side of the box body (20) on the right side are communicated and connected with the air inlet end of the electromagnetic valve (18); the side of the box body (20) is respectively provided with a plurality of through grooves (22), the through grooves (22) are respectively provided with a main gas sensor (151) or a secondary gas sensor (152), and the detection end of the main gas sensor (151) and the detection end of the secondary gas sensor (152) are respectively communicated with the inside of the corresponding box body (20).

3. A smoke tester according to claim 2, wherein: an exhaust four-way pipe (30) is embedded and installed at the bottom of the shell box body (1), and one end of the exhaust four-way pipe (30) is communicated with the outside of the shell box body (1); the other ports of the exhaust four-way pipe (30) are sequentially connected with the vent holes (21) at the other sides of the two box bodies (20) and the first gas flowmeter (12) through pipelines, and one-way valves are arranged on the pipelines among the box bodies (20), the first gas flowmeter (12) and the exhaust four-way pipe (30).

4. A smoke tester according to claim 1, wherein: the switch power supply (40) is further fixedly arranged in the shell box body (1), the alternating current interface (41), the direct current interface (42), the USB interface (43) and the switch (44) are further arranged on the instrument front panel (3), and the alternating current interface (41), the direct current interface (42), the USB interface (43), the switch (44) and the switch power supply (40) are respectively and electrically connected with the controller through circuits.

5. A smoke tester according to claim 1, wherein: and the pipelines communicated with the inlet and the outlet of the smoke pump (11) and the smoke pump (13) are silica gel pipes.

6. A smoke tester according to claim 1, wherein: the shell upper cover (2) is rotatably arranged on the shell box body (1) through a hinge shaft, and a quick lock catch is arranged between the shell box body (1) and the shell upper cover (2).

7. A smoke tester according to claim 1, wherein: and the side surfaces of the smoke pump (11), the smoke pump (13) and the controller are respectively provided with a cooling fan.

8. A smoke tester according to claim 1, wherein: an ambient temperature sensor (80) is also arranged on the instrument front panel (3).