Laser online detection device for pulverized coal concentration

Abstract

The utility model relates to the technical field of pulverized coal detection, in particular to a pulverized coal concentration laser on-line detection device which comprises an instrument box, a pulverized coal pipeline, a sampling window, two detection mechanisms and a limiting mechanism, and each detection mechanism comprises a laser transmitter, an optical power receiver, a conduction optical fiber, a ceramic tube and a single crystal. A laser beam is generated through the laser transmitter, penetrates into the pulverized coal pipeline through the conduction optical fiber and is received by the optical power receiver, and due to the absorption and scattering effects of pulverized coal on the laser, the transmission intensity of the laser can be changed. And the optical power receiver converts the received optical signal into an electric signal, and transmits the electric signal to the calculation and display module through the photoelectric converter, so that the device can reliably and accurately detect the pulverized coal, and can meet the requirement of optimizing combustion.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal dust detection technical field especially relates to a coal dust concentration laser on -line detection device. BACKGROUND

[0002] As important raw materials in the field of power and smelting, the accurate measurement of coal dust concentration plays a vital role in ensuring the stability of the production process and saving costs.

[0003] At present, the mainstream method for measuring coal dust concentration includes electrostatic measurement and temperature difference measurement method, and the temperature difference measurement method is used for coal dust storage type small boiler, the coal dust temperature t1 in the powder bin, the temperature t2 of primary air, the temperature T3 of air-powder mixture are used to calculate the coal dust concentration through function logic, and electrostatic measurement and charge method are also used, the electrostatic sensor receives the amount of charge to calculate the relative concentration of coal dust.

[0004] However, the current mainstream coal dust concentration measurement method has the problems of unreliability, large error and the like, and it is difficult to meet the demand of accurate measurement and optimization of combustion. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a coal dust concentration laser on-line detection device, which solves the problems of unreliability, large error and the like of the current mainstream coal dust concentration measurement method in the prior art, and meets the demand of accurate measurement and optimization of combustion.

[0006] To achieve the above-mentioned purpose, the utility model provides a coal dust concentration laser on-line detection device, which comprises an instrument box, a coal dust pipeline, a sampling window, two detection mechanisms and a limiting mechanism, each detection mechanism comprises a laser emitter, a light power receiver, a conductive optical fiber, a ceramic tube and a single crystal wafer, one end of the ceramic tube is communicated with the instrument box, the other end of the ceramic tube is communicated with the coal dust pipeline, the sampling window is arranged in the coal dust pipeline, the laser emitter is arranged in the instrument box, one end of the conductive optical fiber is fixedly connected with the laser emitter, the other end of the conductive optical fiber is fixedly connected with the single crystal wafer, the single crystal wafer is arranged on the sampling window, and the light power receiver is arranged on the conductive optical fiber.

[0007] The limiting mechanism comprises a box door, a limiting ring, a shell, a limiting rod, a spring and a circular ring, the box door is rotatably connected with the instrument box, the limiting ring is arranged on the box door, the shell is fixedly connected with the outer wall of the instrument box, one end of the limiting rod penetrates through the shell and is matched with the limiting ring, the circular ring is fixedly sleeved on the outside of the limiting rod, and the two ends of the spring are fixedly connected with the inner wall of the shell and the circular ring respectively.

[0008] The limiting mechanism further comprises a guide rail and a sliding block, the guide rail is arranged on the inner wall of the shell, one end of the sliding block is slidably connected with the guide rail, and the other end of the sliding block is fixedly connected with the limiting rod.

[0009] The coal dust concentration laser online detection device further comprises an information processor, and the information processor is arranged in the interior of the instrument box.

[0010] The spring is arranged outside the limiting rod, and the limiting ring is arranged on the left side of the shell.

[0011] The coal dust concentration laser online detection device of the utility model, through the laser emitter produces a laser, and after the laser passes through the conductive optical fiber and enters the coal dust pipeline, the laser is received by the optical power receiver, due to the absorption and scattering of the coal dust to the laser, the transmission intensity of the laser will change. The optical power receiver converts the received optical signal into an electrical signal, and transmits the electrical signal to the calculation and display module through the photoelectric converter, so that the device can reliably and accurately detect the coal dust and meet the demand of optimizing combustion. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0013] Figure 1 It is the overall structure schematic view of the utility model.

[0014] Figure 2 It is the overall sectional view of the utility model.

[0015] Figure 3 It is the sectional view of the instrument box of the utility model.

[0016] Figure 4 It is the A place local structure of the utility model. Figure 3 enlarged view.

[0017] 101-instrument box, 102-coal dust pipeline, 103-sampling window, 104-information processor, 105-laser emitter, 106-optical power receiver, 107-conductive optical fiber, 108-ceramic tube, 109-single crystal wafer, 110-box door, 111-limiting ring, 112-shell, 113-limiting rod, 114-spring, 115-ring, 116-guide rail, 117-sliding block. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, and the embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0019] Please refer to Figures 1 to 4 , wherein, Figure 1 is a structural schematic diagram of the whole of the present application, Figure 2 is a sectional view of the whole of the present application, Figure 3 is a sectional view of the instrument box 101 of the present application, Figure 4 is a Figure 3 enlarged view of the local structure at A of the present application.

[0020] The present application provides a kind of coal powder concentration laser online detection device, including instrument box 101, coal powder pipeline 102, sampling window 103, two detection mechanisms, limiting mechanism and information processor 104, each described detection mechanism includes laser emitter 105, optical power receiver 106, conducting optical fiber 107, ceramic tube 108 and single wafer 109, the limiting mechanism includes box door 110, limiting ring 111, shell 112, limiting rod 113, spring 114, circular ring 115, guide rail 116 and sliding block 117.

[0021] For this specific embodiment,

[0022] Wherein, one end of the ceramic tube 108 is communicated with the instrument box 101, the other end of the ceramic tube 108 is communicated with the coal powder pipeline 102, the sampling window 103 is arranged in the interior of the coal powder pipeline 102, the laser emitter 105 is arranged in the interior of the instrument box 101, one end of the conducting optical fiber 107 is fixedly connected with the laser emitter 105, the other end of the conducting optical fiber 107 is fixedly connected with the single wafer 109, the single wafer 109 is arranged on the sampling window 103, and the optical power receiver 106 is arranged on the conducting optical fiber 107. A laser beam is generated by the laser emitter 105, and penetrates into the coal powder pipeline 102 through the conducting optical fiber 107, and is received by the optical power receiver 106. Due to the absorption and scattering of laser by coal powder, the transmission intensity of laser will change. The optical power receiver 106 converts the received optical signal into an electrical signal, and transmits it to the computing and display module through the photoelectric converter, so that the device can reliably and accurately detect coal powder and meet the demand of optimizing combustion.

[0023] Secondly, the box door 110 is rotationally connected with the instrument box 101, the limiting ring 111 is arranged on the box door 110, the shell 112 is fixedly connected with the outer wall of the instrument box 101, one end of the limiting rod 113 penetrates through the shell 112 and is matched with the limiting ring 111, the circular ring 115 is fixedly sleeved on the outside of the limiting rod 113, and the two ends of the spring 114 are fixedly connected with the inner wall of the shell 112 and the circular ring 115 respectively. By opening the box door 110, the elements in the instrument box 101 are convenient to maintain and replace, the box door 110 is fixed by cooperation of the limiting ring 111 and the limiting rod 113, when the box door 110 needs to be opened, the limiting rod 113 is pulled to be separated from the limiting ring 111, so that the box door 110 can be opened, when the box door 110 needs to be fixed again, the box door 110 is closed first, then the limiting rod 113 is loosened, under the elastic force of the spring 114, the limiting rod 113 returns to the original position and is matched with the limiting ring 111, and then the limiting and fixing are performed again.

[0024] Meanwhile, the guide rail 116 is arranged on the inner wall of the shell 112, one end of the sliding block 117 is matched with the guide rail 116 in sliding mode, and the other end of the sliding block 117 is fixedly connected with the limiting rod 113. The circular ring 115 is located in the inside of the shell 112, the spring 114 is sleeved on the outside of the limiting rod 113, and the limiting ring 111 is located on the left side of the shell 112. By cooperation of the guide rail 116 and the sliding block 117, the limiting rod 113 can be more stable when moving, the shaking condition is reduced, and the limiting rod 113 can be more accurately matched with the limiting ring 111.

[0025] In addition, the information processor 104 is arranged in the inside of the instrument box 101. The information processor 104 is used for power output of the laser emitter 105, the optical power receiver 106 and the converter.

[0026] When the coal dust concentration laser on-line detection device is used, the laser emitter 105 generates a laser beam, which penetrates into the coal dust pipeline 102 through the conductive optical fiber 107, is accepted by the optical power receiver 106, and is transmitted to the sampling window 103 through the single crystal wafer 109, and due to the absorption and scattering of the laser by the coal dust, the transmission intensity of the laser changes. The optical power receiver 106 converts the received optical signal into an electrical signal and transmits it to the calculation and display module through the photoelectric converter, so that the device can reliably and accurately detect the coal dust and meet the needs of optimizing combustion; by opening the box door 110, the elements in the instrument box 101 can be maintained and replaced, and by cooperation of the limiting ring 111 and the limiting rod 113, the box door 110 is fixed, when it is needed to be opened, the limiting rod 113 is pulled to be separated from the limiting ring 111, so that the box door 110 can be opened, when it is needed to be fixed again, the box door 110 is closed first, then the limiting rod 113 is loosened, under the elastic force of the spring 114, the limiting rod 113 returns to the original position and is matched with the limiting ring 111, and then limiting and fixing are carried out again; the ring 115 is located in the inside of the shell 112, the spring 114 is sleeved on the outside of the limiting rod 113, and the limiting ring 111 is located on the left side of the shell 112. Through cooperation of the guide rail 116 and the sliding block 117, the limiting rod 113 can be more stable when moving, the shaking condition is reduced, and the limiting rod 113 can be more accurately matched with the limiting ring 111.

[0027] The above disclosure is only one or more preferred embodiments of the application, and cannot limit the scope of the application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the application still belong to the scope covered by the application.

Claims

1. A laser-based online detection device for pulverized coal concentration, characterized in that, Includes instrument box, pulverized coal pipeline, sampling window, two detection mechanisms and limit mechanism; Each of the aforementioned detection mechanisms includes a laser emitter, an optical power receiver, a conductive optical fiber, a ceramic tube, and a single crystal wafer. One end of the ceramic tube is connected to the instrument box, and the other end of the ceramic tube is connected to the pulverized coal pipeline. The sampling window is disposed inside the pulverized coal pipeline. The laser emitter is disposed inside the instrument box. One end of the conductive optical fiber is fixedly connected to the laser emitter, and the other end of the conductive optical fiber is fixedly connected to the single crystal wafer. The single crystal wafer is disposed on the sampling window, and the optical power receiver is disposed on the conductive optical fiber.

2. The online laser detection device for pulverized coal concentration as described in claim 1, characterized in that, The limiting mechanism includes a door, a limiting ring, a housing, a limiting rod, a spring, and a ring. The door is rotatably connected to the instrument box. The limiting ring is disposed on the door. The housing is fixedly connected to the outer wall of the instrument box. One end of the limiting rod passes through the housing and is adapted to the limiting ring. The ring is fixedly sleeved on the outside of the limiting rod. The two ends of the spring are fixedly connected to the inner wall of the housing and the ring, respectively.

3. The online laser detection device for pulverized coal concentration as described in claim 2, characterized in that, The limiting mechanism also includes a guide rail and a slider. The guide rail is disposed on the inner wall of the housing. One end of the slider is slidably adapted to the guide rail, and the other end of the slider is fixedly connected to the limiting rod.

4. The online laser detection device for pulverized coal concentration as described in claim 3, characterized in that, The online laser detection device for coal powder concentration also includes an information processor, which is located inside the instrument box.

5. The online laser detection device for pulverized coal concentration as described in claim 4, characterized in that, The ring is located inside the outer shell, the spring is sleeved on the outside of the limiting rod, and the limiting ring is located on the left side of the outer shell.

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