Online UV Flue Gas Analyzer

Abstract

The present invention discloses an online ultraviolet flue gas analyzer, which relates to the technical field of gas detection equipment, and comprises a box body, wherein a light source is fixedly connected to a side of the light box close to the gas box, a first optical fiber is fixedly connected in the square tube, springs are fixedly connected to the front sides of the No. 1 groove and the No. 2 groove, and a sealing slider is fixedly connected to the rear end of the spring, and a No. 1 air outlet hole and a No. 2 air outlet hole are respectively provided on the side close to the No. 1 groove and the No. 2 groove. The present invention realizes the transmission of light by the first optical fiber through the cooperation of an input terminal and an output terminal, so that ultraviolet light is laterally irradiated into the gas box, and gas enters the gas collecting cavity through the air inlet hole. As the internal pressure increases, the sealing slider slides under pressure, and the No. 1 air outlet hole and the No. 2 air outlet hole are opened, and the gas is uniformly and synchronously discharged from each of the No. 1 air outlet hole and the No. 2 air outlet hole, thereby realizing uniform transmission of gas, so that the gas can fully contact with the light, and the accuracy of the detection result is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of gas detection equipment, in particular to an online ultraviolet flue gas analyzer. Background Art

[0002] At present, the online ultraviolet flue gas analyzers on the market all use ultraviolet differential technology. It is composed of light source, gas chamber, optical fiber, spectrometer and other components, and undergoes a series of light source processing to obtain the content of relevant components in the gas. This is the working principle of the flue gas (CEMS) emission online monitoring system. Its advantages are strong anti-interference ability and high measurement accuracy.

[0003] In the prior art, due to the uncertain air flow transmission speed of the gas being measured, the gas and light are not in sufficient contact during contact, which will affect the detection result, resulting in large errors in the detection result and insufficient accuracy. Therefore, an online ultraviolet flue gas analyzer is needed to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art and provide an online ultraviolet flue gas analyzer.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an online ultraviolet flue gas analyzer comprises a box body, a square tube is fixedly connected to one side of the box body, a gas box is fixedly connected to the end of the square tube, a light box is fixedly connected to the side of the square tube away from the gas box, a light source is fixedly connected to the side of the light box close to the gas box, a first optical fiber is fixedly connected to the square tube, an input terminal and an output terminal are respectively fixedly connected to the two sides of the first optical fiber, an air intake block is fixedly connected to the rear side of the gas box, and the rear end of the air intake block extends to the outside of the box body, and the rear end of the air intake block An air inlet is provided at the end, an air collecting cavity is provided on the front side of the air inlet, a group of No. 1 grooves and No. 2 grooves are respectively provided on the front sides of the air collecting cavity, and the No. 1 grooves and No. 2 grooves are provided in an alternating manner, springs are fixedly connected to the front sides of the No. 1 grooves and No. 2 grooves, and sealing sliders are fixedly connected to the rear ends of the springs, and a No. 1 air outlet and a No. 2 air outlet are respectively provided on the side where the No. 1 grooves and No. 2 grooves are close to each other, a second optical fiber is fixedly connected to the side of the gas box away from the square tube, and a spectrometer is connected to the end of the second optical fiber away from the square tube.

[0006] Preferably, an air outlet pipe is fixedly connected to the front side of the gas box, and the front end of the air outlet pipe extends to the outside of the box body, and the front end of the air outlet pipe is fixedly connected to an upward inclined cylinder, and air outlets are provided on the front and rear sides of the inclined cylinder. A sealing ball is provided in the inclined cylinder, and the diameter of the sealing ball is the same as the inner diameter of the inclined cylinder.

[0007] Preferably, reflectors are fixedly connected to the top and bottom ends of the gas box, and the two reflectors are symmetrically arranged.

[0008] Preferably, two ultraviolet quartz mirrors are fixedly connected inside the square tube, and the two ultraviolet quartz mirrors are symmetrically arranged.

[0009] Preferably, an air reflector is fixedly connected to the front side of the interior of the light box, and the cross-section of the air reflector is V-shaped.

[0010] Preferably, a limiting ring is fixedly connected to one side of the air outlet pipe close to the inclined cylinder, and the inner diameter of the limiting ring is smaller than the diameter of the sealing ball.

[0011] Preferably, a No. 1 V-shaped tube is fixedly connected to the outer side of the No. 1 air outlet, a No. 2 V-shaped tube is fixedly connected to the outer side of the No. 2 air outlet, and the No. 1 V-shaped tube and the No. 2 V-shaped tube are symmetrically arranged.

[0012] Preferably, support plates are fixedly connected to both sides of the bottom end of the gas box, and the bottom ends of the support plates are fixedly connected to the bottom end of the box body.

[0013] Beneficial effects:

[0014] Compared with the existing technology, the online ultraviolet flue gas analyzer has the following beneficial effects:

[0015] 1. The present invention uses a light box to make the light source excite ultraviolet light. The square tube is beneficial to reducing the area of ​​ultraviolet light diffusion. The cooperation of the input terminal and the output terminal is used to realize the transmission of light by the first optical fiber, so that the ultraviolet light is laterally irradiated into the gas box, and the gas enters the gas collecting cavity through the air inlet hole. The gas will gather in the gas collecting cavity. As the internal pressure increases, the sealing slider is pressed and slides, and the No. 1 and No. 2 air outlets are opened. The gas is evenly and synchronously discharged from the No. 1 and No. 2 air outlets, thereby realizing uniform transmission of the gas, allowing the gas to fully contact with the light, and ensuring the accuracy of the detection results.

[0016] 2. In the present invention, the gas after detection will enter the air outlet pipe. As the gas inside the gas box increases, the gas will push the sealing ball to move to the upper side of the inclined cylinder. At this time, the air outlet is opened and the gas after detection is discharged. After the detection is completed, the sealing ball automatically moves downward under the action of its own gravity, seals the air outlet, and prevents outside air from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0019] Figure 3 It is a schematic diagram of a top cross-sectional structure of the present invention;

[0020] Figure 4It is a side cross-sectional structural schematic diagram of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the air intake block in the present invention.

[0022] In the figure: 1, box body, 2, square tube, 3, light box, 4, light source, 5, first optical fiber, 6, input terminal, 7, output terminal, 8, gas box, 9, air inlet block, 10, air inlet hole, 11, gas collecting cavity, 12, groove No. 1, 13, groove No. 2, 14, spring, 15, sealing slider, 16, air outlet No. 1, 17, air outlet No. 2, 18, second optical fiber, 19, spectrometer, 20, air outlet pipe, 21, inclined cylinder, 22, air outlet, 23, sealing ball, 24, reflector, 25, UV stone quartz mirror, 26, anti-air plate, 27, limit ring, 28, V-shaped tube No. 1, 29, V-shaped tube No. 2, 30, support plate. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] like Figure 1 to Figure 5As shown, the online ultraviolet flue gas analyzer includes a box body 1, a square tube 2 is fixedly connected to one side of the box body 1, and a gas box 8 is fixedly connected to the end of the square tube 2. Reflectors 24 are fixedly connected to the top and bottom ends of the gas box 8, and the two reflectors 24 are symmetrically arranged. The design of the reflectors 24 can reflect all ultraviolet light to the middle of the gas box 8, so that it is concentrated in the middle of the gas box 8. Support plates 30 are fixedly connected to both sides of the bottom end of the gas box 8, and the bottom ends of the support plates 30 are fixedly connected to the bottom end of the box body 1. The design of the support plates 30 plays a role in fixing and supporting the gas box 8. A light box 3 is fixedly connected to the side of the square tube 2 away from the gas box 8, and a light source 4 is fixedly connected to the side of the light box 3 close to the gas box 8. Two ultraviolet quartz mirrors 25 are fixedly connected inside the square tube 2, and the two ultraviolet quartz mirrors 25 are symmetrically arranged. The ultraviolet quartz mirrors 25 can adjust the collimation of the outgoing light so that the outgoing light is a beam of parallel light. A first optical fiber 5 is fixedly connected in the square tube 2, and an input terminal 6 and an output terminal 7 are fixedly connected to both sides of the first optical fiber 5, an air intake block 9 is fixedly connected to the rear side of the gas box 8, and the rear end of the air intake block 9 extends to the outside of the box body 1, an air intake hole 10 is opened at the rear end of the air intake block 9, and a gas collecting cavity 11 is opened at the front side of the air intake hole 10, and a group of No. 1 grooves 12 and No. 2 grooves 13 are opened at the front side of the gas collecting cavity 11, and the No. 1 grooves 12 and No. 2 grooves 13 are opened alternately, and the front sides of the No. 1 grooves 12 and No. 2 grooves 13 are fixedly connected with springs 14, and the rear ends of the springs 14 are fixedly connected with sealing sliders 15, and the No. 1 grooves 12 and No. 2 grooves 13 are opened on the sides close to each other, and the No. 1 outlet hole 16 and No. 2 outlet hole 17 are respectively opened. An air reflector 26 is fixedly connected to the front side of the interior of the light box 3, and the cross section of the air reflector 26 is V-shaped. The design of the air reflector 26 can eject the gas ejected from the No. 1 air outlet 16 and the No. 2 air outlet 17 into the light again after passing through the light, so that the gas can fully contact the light. A No. 1 V-shaped tube 28 is fixedly connected to the outside of the No. 1 air outlet 16, and a No. 2 V-shaped tube 29 is fixedly connected to the outside of the No. 2 air outlet 17. The No. 1 V-shaped tube 28 and the No. 2 V-shaped tube 29 are symmetrically arranged. After the gas ejected from the No. 1 air outlet 16 and the No. 2 air outlet 17 enters the No. 1 V-shaped tube 28 and the No. 2 V-shaped tube 29 and is ejected, it will collide with each other in the light and then disperse, which is conducive to slowing down the transmission speed of the airflow and facilitating the sufficient absorption contact between the gas and the light, greatly improving the efficiency and accuracy of the detection. A second optical fiber 18 is fixedly connected to one side of the gas box 8 away from the square tube 2 , and a spectrometer 19 is connected to one end of the second optical fiber 18 away from the square tube 2 .

[0025] During operation, the light source 4 is used to excite the ultraviolet light through the light box 3, and the square tube 2 is conducive to reducing the diffusion area of ​​the ultraviolet light, so that it is gathered in the square tube 2. The cooperation of the input terminal 6 and the output terminal 7 is used to realize the transmission of the light by the first optical fiber 5, so that the ultraviolet light is horizontally irradiated into the gas box 8, and the gas enters the gas collecting cavity 11 through the air inlet 10. When the sealing slider 15 seals the No. 1 air outlet 16 and the No. 2 air outlet 17, the gas will gather in the gas collecting cavity 11. As the gas continues to increase, the internal pressure increases. At this time, the sealing slider 15 is pressed and slid, the spring 14 is compressed, the No. 1 air outlet 16 and the No. 2 air outlet 17 are opened, and the gas is uniformly and synchronously discharged from each No. 1 air outlet 16 and the No. 2 air outlet 17, thereby realizing uniform transmission of the gas, so that the gas can fully contact with the light, ensuring the accuracy of the detection result, and then the second optical fiber 18 is used to realize the conduction of the absorbed light, and the spectrometer 19 is used to realize the analysis and calculation of the absorbed light, so as to obtain the gas concentration of the measured gas.

[0026] An air outlet pipe 20 is fixedly connected to the front side of the gas box 8, and the front end of the air outlet pipe 20 extends to the outside of the box body 1. An upwardly inclined inclined cylinder 21 is fixedly connected to the front end of the air outlet pipe 20. The front and rear sides of the inclined cylinder 21 are provided with air outlets 22. A sealing ball 23 is arranged in the inclined cylinder 21, and the diameter of the sealing ball 23 is the same as the inner diameter of the inclined cylinder 21. A limiting ring 27 is fixedly connected to one side of the air outlet pipe 20 close to the inclined cylinder 21, and the inner diameter of the limiting ring 27 is smaller than the diameter of the sealing ball 23. The design of the limiting ring 27 prevents the sealing ball 23 from falling into the gas box 8 through the air outlet pipe 20.

[0027] During operation, the detected gas will enter the air outlet pipe 20. As the gas inside the gas box 8 increases, the gas will push the sealing ball 23 to move to the upper side inside the inclined cylinder 21. At this time, the air outlet 22 is opened and the detected gas is discharged. After the detection is completed, the sealing ball 23 automatically moves downward under the action of its own gravity, sealing the air outlet 22 to prevent outside air from entering.

[0028] Working principle: When working, the light source 4 is used to excite the ultraviolet light through the light box 3, and the square tube 2 is conducive to reducing the diffusion area of ​​the ultraviolet light, so that it is gathered in the square tube 2. The cooperation of the input terminal 6 and the output terminal 7 is used to realize the transmission of the light by the first optical fiber 5, so that the ultraviolet light is irradiated into the gas box 8 laterally, and the gas enters the gas collecting cavity 11 through the air inlet 10. When the sealing slider 15 seals the first air outlet 16 and the second air outlet 17, the gas will gather in the gas collecting cavity 11. As the gas continues to increase, the internal pressure increases. At this time, the sealing slider 15 is pressed and slides, the spring 14 is compressed, the first air outlet 16 and the second air outlet 17 are opened, and the gas is evenly distributed. The gas is discharged synchronously from the No. 1 gas outlet 16 and the No. 2 gas outlet 17, thereby achieving uniform gas transmission, allowing the gas to fully contact the light, ensuring the accuracy of the test results. After the gas ejected from the No. 1 gas outlet 16 and the No. 2 gas outlet 17 enters the No. 1 V-shaped tube 28 and the No. 2 V-shaped tube 29 and is ejected, it will collide with each other in the light and then disperse, which is beneficial to slow down the transmission speed of the airflow and is beneficial to sufficient absorption contact between the gas and the light, greatly improving the efficiency and accuracy of the test, and then the second optical fiber 18 is used to realize the transmission of the absorbed light, and the spectrometer 19 is used to analyze and calculate the absorbed light, so as to obtain the gas concentration of the measured gas.

[0029] The detected gas will enter the air outlet pipe 20. As the gas inside the gas box 8 increases, the gas will push the sealing ball 23 to move to the upper side inside the inclined cylinder 21. At this time, the air outlet 22 is opened and the detected gas is discharged. After the detection is completed, the sealing ball 23 automatically moves downward under the action of its own gravity, sealing the air outlet 22 to prevent outside air from entering.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An online ultraviolet flue gas analyzer, comprising a housing (1), characterized in that: A square tube (2) is fixedly connected to one side of the box body (1), a gas box (8) is fixedly connected to the end of the square tube (2), a light box (3) is fixedly connected to the side of the square tube (2) away from the gas box (8), a light source (4) is fixedly connected to the side of the light box (3) close to the gas box (8), a first optical fiber (5) is fixedly connected to the square tube (2), an input terminal (6) and an output terminal (7) are fixedly connected to the two sides of the first optical fiber (5), an air intake block (9) is fixedly connected to one side of the gas box (8), and an end of the air intake block (9) close to the box body (1) extends to the outside of the box body (1), and the air intake block (9) An air inlet (10) is provided at one end away from the gas box (8); a gas collecting cavity (11) is provided at a side of the air inlet (10) close to the gas box (8); a group of first grooves (12) and second grooves (13) are provided at a side of the gas collecting cavity (11) close to the gas box (8); the first grooves (12) and second grooves (13) are provided in a staggered manner; a spring (14) is fixedly connected to a side of the first groove (12) and second groove (13) close to the gas box (8); a sealing slider (15) is fixedly connected to an end of the spring (14) away from the gas box (8); A first air outlet (16) and a second air outlet (17) are respectively provided on the side close to the second groove (13); a second optical fiber (18) is fixedly connected to the side of the gas box (8) away from the square tube (2); an end of the second optical fiber (18) away from the square tube (2) is connected to a spectrometer (19); an air outlet pipe (20) is fixedly connected to the side of the gas box (8) away from the air inlet block (9); an end of the air outlet pipe (20) close to the box body (1) extends to the outside of the box body (1); an end of the air outlet pipe (20) away from the air inlet block (9) is fixedly connected to an upwardly inclined inclined cylinder (21); and the front and rear ends of the inclined cylinder (21) are connected to the second optical fiber (18) and the second optical fiber (18) are connected to the second optical fiber (18) and the second optical fiber (18) are connected to the second optical fiber (18) and the second optical fiber (18) are connected to the second optical fiber (19); Both sides are provided with gas outlets (22), a sealing ball (23) is provided inside the inclined cylinder (21), and the diameter of the sealing ball (23) is the same as the inner diameter of the inclined cylinder (21), a first V-shaped tube (28) is fixedly connected to the outer side of the first gas outlet (16), a second V-shaped tube (29) is fixedly connected to the outer side of the second gas outlet (17), and the first V-shaped tube (28) and the second V-shaped tube (29) are symmetrically arranged, and the gas ejected from the first gas outlet (16) and the second gas outlet (17) will collide with each other in the light and then disperse after entering the first V-shaped tube (28) and the second V-shaped tube (29) and being ejected.

2. The online ultraviolet flue gas analyzer according to claim 1, characterized in that: A reflector (24) is fixedly connected to the top and bottom ends of the gas box (8), and the two reflectors (24) are symmetrically arranged.

3. The online ultraviolet flue gas analyzer according to claim 1, characterized in that: Two ultraviolet quartz mirrors (25) are fixedly connected inside the square tube (2), and the two ultraviolet quartz mirrors (25) are symmetrically arranged.

4. The online ultraviolet flue gas analyzer according to claim 1, characterized in that: A limiting ring (27) is fixedly connected to one side of the air outlet pipe (20) close to the inclined cylinder (21), and the inner diameter of the limiting ring (27) is smaller than the diameter of the sealing ball (23).

5. The online ultraviolet flue gas analyzer according to claim 1, characterized in that: Support plates (30) are fixedly connected to both sides of the bottom end of the gas box (8), and the bottom ends of the support plates (30) are fixedly connected to the inside of the box body (1).

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