Material component online sampling detection device and method

Abstract

The invention discloses a material component on-line sampling detection device and method. The device comprises a groove cover arranged above a flow groove in a covering mode, the groove cover is connected with a groove cover opening and closing assembly, the groove cover opening and closing assembly is connected to a detection module, and the groove cover is opened according to a cover opening instruction of the detection module or closed according to a closing instruction of the detection module; the detection module is also connected to the signal excitation module and the detection trigger module; the detection module responds to a detection instruction of the detection trigger module to start detection so as to send a cover opening instruction to the groove cover opening and closing assembly and send an excitation instruction to the signal excitation module; an excitation light beam of the signal excitation module and the optical signal capturer point to an area in the launder corresponding to the launder cover, so that a fluid reflection signal is obtained by exciting fluid in the launder when the launder cover is opened, and the fluid reflection signal is returned to the detection module for component analysis. According to the scheme, the fluid in the groove can be automatically sampled and analyzed, the risk of manual sampling is reduced, and the detection efficiency and accuracy can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of material composition detection in copper smelting workshops, and in particular relates to an online material composition sampling detection device and method. Background Art

[0002] The smelting methods for producing electrolytic copper from copper concentrate in the world are divided into two categories: pyrometallurgy and hydrometallurgy. The pyrometallurgy process mainly includes four main steps: matte smelting, matte blowing, blister copper pyrometallurgy and anode copper electrolytic refining.

[0003] Sulfur smelting mainly uses copper concentrate to make matte smelting, the purpose is to oxidize part of the iron in the copper concentrate, remove the slag, and produce matte with a high copper content. The main products of the smelting furnace are slag and matte, which are separated in the sedimentation tank. The slag layer is above the matte layer after sedimentation and separation due to its light weight. The liquid level of slag and matte melt is mastered by measuring the scale, and the slag and copper discharge operations are completed according to the liquid level height.

[0004] The detection of material composition during the discharge process is crucial, and currently it relies on manual sampling for detection. The typical method of manual sampling detection is to apply XRF fluorescence analysis. The entire detection process is: manual on-site sampling--sample cooling--sample delivery to the customer's on-site laboratory--laboratory reduction--then grinding the sample, grinding it into powder--sieving--pressing the sample into a powder cake--detection and analysis. The entire process takes at least 2 hours, so manual detection is not only costly but also time-consuming. In addition, the melt in the flow channel needs to continue to participate in the reaction of the next process after flowing through the flow channel into the next process. Therefore, the temperature of the melt in the flow channel is usually as high as 1300℃ or more. However, in the actual on-site sampling process, it is necessary to manually open the flow channel cover for sampling, which is highly dependent on the technical maturity and operational standardization of the operator, and there are high safety hazards. In this regard, this scheme proposes an online detection device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a material composition online sampling and detection device in view of the above problems;

[0006] Another object of the present invention is to provide an online sampling and detection method based on the aforementioned material components.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A material component online sampling and detection device is used to detect the material component of a fluid flowing through a flow channel, comprising a channel cover arranged above the flow channel, the channel cover is connected to a channel cover opening and closing component, the channel cover opening and closing component is connected to a detection module, and opens the channel cover according to an opening instruction of the detection module or closes the channel cover according to a closing instruction;

[0009] The detection module is also connected to the signal excitation module and the detection trigger module;

[0010] The detection module initiates detection in response to the detection instruction of the detection trigger module to send an opening instruction to the slot cover opening and closing component and an excitation instruction to the signal excitation module;

[0011] The excitation light beam and light signal capture device of the signal excitation module are both directed to the area inside the flow slot corresponding to the slot cover, so as to obtain the fluid reflection signal by exciting the fluid in the flow slot when the slot cover is opened, and return the fluid reflection signal to the detection module for component analysis.

[0012] In the above-mentioned material component online sampling and detection device, the flow channel upper cover is provided with a plurality of slot covers, and the plurality of slot covers work together to isolate the inside of the flow channel from the outside;

[0013] The slot cover opening and closing assembly corresponds to one or more slot covers.

[0014] In the above-mentioned online material component sampling and detection device, the slot cover opening and closing assembly includes a power frame and a power module;

[0015] The power frame is arranged across the flow channel, and the power module is fixed on the power frame for opening or closing the corresponding channel cover.

[0016] In the above-mentioned material component online sampling and detection device, the power module includes a lifting unit and a power motor connected to the lifting unit;

[0017] The power motor is offset and located above the slot cover, and the lifting unit extends from the power motor to just above the slot cover to open or close the corresponding slot cover.

[0018] In the above-mentioned material composition online sampling and detection device, the lifting unit includes a drum, a pulley block and a suspension rope;

[0019] The roller is connected to the power motor and rolls circumferentially under the action of the power motor;

[0020] The pulley block is located directly above the slot cover and is used to guide the suspension rope;

[0021] The suspension rope is connected to the slot cover, and is extended upward from the slot cover and connected to the roller through the pulley block.

[0022] In the above-mentioned material component online sampling and detection device, one side of the slot cover is hinged to the flow channel. When the lifting rope is wound up, the slot cover opens upward along the hinged side, and the corresponding internal area of ​​the flow channel is exposed. When the lifting rope is released, the slot cover is covered downward along the hinged side, and the corresponding area of ​​the flow channel is covered.

[0023] In the above-mentioned material component online sampling and detection device, the power frame includes a mounting plane, and the lifting unit is mounted on the mounting plane;

[0024] A positioning rod vertically penetrates the installation plane and is used for positioning the opening and closing of the slot cover.

[0025] In the above-mentioned material component online sampling and detection device, the positioning rod comprises an upper telescopic cylinder, a lower telescopic rod, a fixing seat and a positioning base;

[0026] The positioning base is arranged on the corresponding slot cover;

[0027] The fixing seat is arranged on the installation plane;

[0028] The upper telescopic cylinder is connected to the fixing seat, the lower telescopic rod is connected to the positioning base, and the upper telescopic cylinder and the lower telescopic rod are axially slidably connected so that the slot cover shows a straight up and down motion trajectory during the opening and closing process.

[0029] In the above-mentioned material component online sampling and detection device, the signal excitation module is installed on an excitation module bracket;

[0030] The excitation module bracket includes a fixed rod and a lifting rod axially movably connected to the fixed rod and capable of being lifted and lowered relative to the fixed rod axially;

[0031] The signal excitation module is installed on the lifting rod, and the fixed rod is provided with a rangefinder;

[0032] The bottom end of the lifting rod is connected with a lifting mechanism, and the lifting mechanism and the rangefinder are both connected to the detection module.

[0033] A material component online sampling and detection method, the method comprising:

[0034] Initiating detection in response to a detection instruction;

[0035] Outputting a cover opening instruction to the slot cover opening and closing component so that it opens the slot cover;

[0036] Outputting an excitation instruction to the signal excitation module so that it excites the fluid in the flow slot corresponding to the slot cover;

[0037] receiving a fluid reflection signal collected by a signal excitation module;

[0038] Material composition analysis based on fluid reflection signals

[0039] In the above-mentioned material composition online sampling and detection method, it also includes receiving the distance measurement result of the distance meter;

[0040] The height of the signal excitation module is adjusted by the lifting mechanism according to the distance measurement result to keep the angle and distance between the signal excitation module and the fluid surface unchanged.

[0041] In the above-mentioned material composition online sampling and detection method, the signal excitation module is first adjusted in the following manner during each detection process:

[0042] Receive the distance measurement result D1measured from the rangefinder;

[0043] The measured height H1measured is calculated based on the distance measurement result and the angle θ of the distance meter in the vertical direction:

[0044] H1measured=D1measured·cosθ

[0045] Obtain the pre-stored standard height H, and obtain the height difference ΔH=H1measured-H according to the standard height;

[0046] Adjust the height of the signal excitation module according to the height difference ΔH;

[0047] The current height H1measured is stored as the standard height H for the next height adjustment.

[0048] In the above-mentioned material component online sampling and detection method, the excitation light beam of the signal excitation module is perpendicular to the flow direction of the flow channel, so that the excitation light beams of the signal excitation modules at different heights are always projected onto the same cross section of the flow channel;

[0049] The ranging signal and the excitation light beam of the ranging module are both directed to the same cross section of the flow cell.

[0050] The advantages of the present invention are:

[0051] 1. The online sampling and detection device can automatically sample and analyze the matte and other fluids in the flow channel, which can not only reduce the risk and labor intensity of manual sampling, but also realize real-time monitoring and improve the efficiency and accuracy of detection;

[0052] 2. The design and coordination of the power module, power frame, roller, pulley block and lifting rope of this solution can assist the equipment in opening the flow channel cover during the detection process and closing the flow channel cover when the detection is completed. The flow channel can still be covered with a slot cover throughout the process without affecting the material sampling and detection;

[0053] 3. This solution has a simple structure and is easy to implement;

[0054] 4. This solution provides a positioning rod for the opening and closing of the slot cover, which can keep the movement trajectory of the slot cover straight up and down, and realize the closing limit of the slot cover;

[0055] 5. This solution provides a rangefinder for use in combination with the signal excitation module. By utilizing the rangefinder and its mounting structure with unchanged height and angle, and taking the rangefinder as a reference, the height of the signal excitation module is adjusted according to the distance measurement results. This can keep the angle and distance between the signal excitation module and the fluid surface unchanged, thereby ensuring the consistency of the test results each time. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a circuit structure block diagram of the material component online sampling and detection device in Embodiment 1 of the present invention;

[0057] Figure 2 It is a schematic diagram of the on-site installation perspective 1 of the material component online sampling and detection device in the first embodiment of the present invention;

[0058] Figure 3 This is a schematic diagram of the second viewing angle of the on-site installation of the material component online sampling and detection device in the first embodiment of the present invention;

[0059] Figure 4 It is an enlarged view of the slot cover opening and closing assembly of the material composition online sampling and detection device in Example 1 of the present invention;

[0060] Figure 5 It is a schematic diagram of the on-site installation of the material component online sampling and detection device in the second embodiment of the present invention;

[0061] Figure 6 5 is a schematic diagram of the structure of the positioning rod in the online sampling and detection device for material components in the second embodiment of the present invention;

[0062] Figure 7 It is a schematic diagram of the on-site installation of the material component online sampling and detection device in the third embodiment of the present invention;

[0063] Figure 8 This is a schematic diagram of two detections in the online sampling and detection method of material components in Example 3 of the present invention;

[0064] Fig. 9 It is a scene schematic diagram of the inclined flow channel in the third embodiment of the present invention.

[0065] Reference numerals: flow channel 1; channel cover 2; channel cover opening and closing assembly 3; power frame 31; power module 32;

[0066] Lifting unit 33; power motor 34; roller 35; pulley block 36; suspension rope 37; detection module 4; signal excitation module 5; detection trigger module 6; positioning rod 7; upper telescopic cylinder 71; lower telescopic rod 72; fixing seat 73; positioning base 74; excitation module bracket 8; fixing rod 81; lifting rod 82; rangefinder 9; site 10. DETAILED DESCRIPTION

[0067] Embodiment 1

[0068] The present invention provides an online material composition sampling and detection device for detecting the material composition of a fluid flowing through a flow channel 1. In a copper smelting workshop, the flow channel is usually used to flow a melt with a temperature as high as 1300°C. Therefore, a flow channel cover is provided above the flow channel to prevent the melt from splashing.

[0069] The flow channel 1 is usually in the form of a long groove structure, and multiple groove covers 2 are used to cover the flow channel 1 in sequence. The cross section of each groove cover 2 is usually in an arc shape. The multiple groove covers 2 are sequentially covered to isolate the inside of the flow channel 1 from the outside to achieve the effect of heat insulation and melt isolation. Each groove cover 2 usually has a gripper, and the groove cover 2 is hinged to the flow channel 1 or not connected and is only covered on the flow channel 1.

[0070] In this embodiment, Figure 1 As shown, the slot cover 2 is connected to a slot cover opening and closing assembly 3 , which is electrically connected to the detection module 4 and opens the slot cover 2 according to the opening instruction of the detection module 4 .

[0071] The detection module 4 is electrically connected to the signal excitation module 5 and the detection trigger module 6 at the same time.

[0072] The detection module 4 responds to the detection instruction of the detection trigger module 6 to start the detection to send the cover opening instruction to the slot cover opening and closing component 3 and send the excitation instruction to the signal excitation module 5;

[0073] The excitation light beam and optical signal capture device of the signal excitation module 5 are both directed to the area inside the flow slot 1 corresponding to the slot cover 2, so as to obtain the fluid reflection signal by exciting the fluid in the flow slot 1 when the slot cover 2 is opened, and return the fluid reflection signal to the detection module 4 for component analysis.

[0074] When material composition detection is required on site, the detection trigger module 6 will send a detection instruction to the detection module 4. The detection module 4 is wirelessly or wiredly connected to the remote background to transmit the component analysis results to the remote background. The detection trigger module 6 can be a trigger switch set in the remote background and manually turned on by the staff.

[0075] After receiving the detection instruction, the detection module 4 sends an opening instruction to the slot cover opening and closing component 3. The slot cover opening and closing component 3 drives the slot cover 2 to open according to the opening instruction. At the same time, the detection module 4 will send an excitation instruction to the signal excitation module 5. After the slot cover 2 is opened, the excitation light beam of the signal excitation module 5 will be emitted to the fluid in the slot to excite the fluid in the slot, and then the reflection signal of the fluid in the slot will be collected, and the reflection signal will be transmitted to the detection module 4. The detection module 4 performs component analysis and detection based on the reflection signal, and outputs the detection result to the remote background. After performing the set number of detections, the detection module 4 sends a closing instruction to the slot cover opening and closing component 3. After receiving the closing instruction, the slot cover opening and closing component 3 drives the slot cover 2 to close. The signal excitation module 5 will no longer receive the excitation instruction, stop sending the excitation signal and receiving the reflection signal, and the entire detection is completed. The set number of times can be once or multiple times, which is not limited here.

[0076] Specifically, Figure 2 and Figure 3 As shown, the slot cover opening and closing assembly 3 corresponds to one or more slot covers 2, and in this embodiment, preferably corresponds to one slot cover 2. The slot cover opening and closing assembly 3 includes a power frame 31 and a power module 32. The power frame 31 is arranged across the flow slot 1, and the power module 32 is fixed on the power frame 31 for opening or closing the corresponding slot cover 2.

[0077] Specifically, Figure 4 As shown, the power module 32 includes a lifting unit 33 and a power motor 34 connected to the lifting unit 33. The power frame 31 includes a mounting plane, and the lifting unit 33 is mounted on the mounting plane. The power motor 34 is offset and located above the slot cover 2, that is, not directly above the flow slot 1. When the slot cover 2 is opened, the area above it is a high-temperature area. The power motor 34 is offset and located above the slot cover 2 to avoid the power motor 34 being directly above the high-temperature area when the slot cover 2 is opened, thereby protecting the power motor 34 from being damaged by high temperature. The lifting unit 33 extends from the power motor 34 to directly above the slot cover 2 to open or close the corresponding slot cover 2. The lifting unit 33 is directly above the slot cover 2 for lifting the slot cover 2 to open it.

[0078] The lifting unit 33 includes a drum 35 , a pulley block 36 and a suspension rope 37 .

[0079] The roller 35 is connected to the power motor 34 and rolls in the circumferential direction under the action of the power motor 34. The pulley block 36 is located directly above the slot cover 2 and is used to guide the suspension rope 37. The suspension rope 37 is connected to the slot cover 2 and extends upward from the slot cover 2 and is connected to the roller 35 through the pulley block 36. When the power motor 34 controls the roller 35 to roll outward, the suspension rope 37 is wound up and the slot cover 2 is opened. After the detection is completed, the power motor 34 controls the roller 35 to roll inward, the suspension rope 37 is extended, and the slot cover 2 covers the flow slot 1 again due to its own gravity.

[0080] The suspension rope 37 uses a steel wire rope that is not affected by high temperatures.

[0081] Preferably, one side of the slot cover 2 is hinged to the flow slot 1, such as Figure 4 The upper right side of the slot cover 2 in the view is hinged to the flow slot 1, or can also be hinged to the site where the flow slot 1 is located. The hanging rope 37 is preferably connected to the surface of the slot cover 2 near the unhinged side. In this example, since the upper right side of the slot cover 2 is hinged, the hanging rope 37 is connected to the position near the lower left side of the slot cover 2. When the hanging rope 37 is rolled up, the slot cover 2 opens upward along the hinged side, and the corresponding internal area of ​​the flow slot 1 is exposed. When the hanging rope 37 is released, the slot cover 2 is covered downward along the hinged side, and the corresponding area of ​​the flow slot 1 is covered.

[0082] In addition, the signal excitation module 5 is installed on an excitation module bracket 8. According to the actual situation on site, the signal excitation module is installed on the excitation module bracket 8 at a certain angle and height so that the excitation light beam and optical signal capturer of the signal excitation module 5 are both directed to the area inside the flow slot 1 corresponding to the slot cover 2.

[0083] Furthermore, this embodiment also provides a material component online sampling and detection method, the method comprising:

[0084] Initiating detection in response to a detection instruction;

[0085] Outputting a cover opening instruction to the slot cover opening and closing component 3 so as to open the slot cover 2;

[0086] Outputting an excitation instruction to the signal excitation module 5 so that it excites the fluid in the flow slot 1 corresponding to the slot cover 2;

[0087] The fluid reflection signal collected by the receiving signal excitation module 5;

[0088] The material composition is analyzed based on the fluid reflection signal, and the analysis results are finally uploaded to the background.

[0089] The combination of the power module, detection module and signal excitation module proposed in this scheme can enable the entire device to complete the operations of automatic sampling, automatic detection and automatic opening and closing of the cover. The entire detection process can be completed without human intervention. The detection process reduces the input of personnel, improves the detection efficiency and also reduces the production cost for the enterprise. The design and coordination of the power module, power frame, roller, pulley block and suspension rope can assist the equipment to open the flow channel cover during the detection process and close the flow channel cover when the detection is completed. The whole process is controlled by one button of the detection module, without human intervention, with a high degree of automation, and reduces the physical injuries caused by the splashing of melt materials to the on-site staff due to the opening and closing of the flow channel cover. The whole device has a high safety.

[0090] Embodiment 2

[0091] This embodiment is similar to the first embodiment, except that, in this embodiment, there is no connection between the slot cover 2 and the flow slot 1, that is, the two are not hingedly connected. When the hanging rope 37 is rolled up, the entire slot cover 2 will be lifted. At this time, due to factors such as gravity and force imbalance, the slot cover 2 will shake during the opening and closing process, which may cause the slot cover 2 to fail to be successfully reset. In this regard, this embodiment proposes the following solution:

[0092] like Figure 5 As shown, a positioning rod 7 vertically penetrates the installation plane and is used to position the slot cover 2 when it is opened or closed.

[0093] like Figure 6 As shown, the positioning rod 7 includes an upper telescopic cylinder 71, a lower telescopic rod 72, a fixing seat 73 and a positioning base 74. The positioning base 74 is arranged on the corresponding slot cover 2, and the arrangement mode can be a welding fixing arrangement or a detachable thread fixing arrangement. The positioning base 74 can be designed to be a shape adapted to the surface of the slot cover so that the positioning base 74 is fitted on the slot cover 2, or a connection structure can be used at the same time, which is not limited here.

[0094] The fixing seat 73 is arranged on the installation plane, and can also be a welding fixing arrangement or a detachable thread fixing arrangement.

[0095] The upper telescopic cylinder 71 is fixedly connected to the fixing seat 73, the lower telescopic rod 72 is fixedly connected to the positioning base 74, and the upper telescopic cylinder 71 and the lower telescopic rod 72 are axially slidably connected so that the slot cover 2 presents a straight up and down movement trajectory during the opening and closing process.

[0096] By using the positioning rod 7, the movement trajectory of the slot cover can be guaranteed to be straight up and down, and the suspension rope 37 has two connection points with the slot cover 2, which reduces the shaking of the slot cover 2 when it is raised or lowered, and can well perform the closing limit of the slot cover.

[0097] Embodiment 3

[0098] This embodiment is similar to the first embodiment, except that Figure 7 As shown, the excitation module bracket 8 of this embodiment includes a fixing rod 81 and a lifting rod 82 which is axially movably connected to the fixing rod 81 and can be axially lifted and lowered relative to the fixing rod 81 .

[0099] The signal excitation module 5 is installed on the lifting rod 82 , and a rangefinder 9 is provided on the fixing rod 81 .

[0100] The bottom end of the lifting rod 82 is connected to a lifting mechanism, and the lifting mechanism and the rangefinder 9 are electrically connected to the detection module 4. The rangefinder 9 transmits the ranging data to the detection module 4, and the detection module 4 adjusts the height of the signal excitation module 5 through the lifting mechanism according to the ranging data. Since it is a vertical translation, the angle remains unchanged. The lifting mechanism can adopt any available lifting structure, such as a small hydraulic lifting mechanism, etc., which will not be described in detail here.

[0101] Accordingly, the material composition online sampling and detection method also includes:

[0102] Receiving the ranging result of the rangefinder 9;

[0103] The height of the signal excitation module 5 is adjusted by the lifting mechanism 83 according to the distance measurement result to keep the angle and distance between the signal excitation module 5 and the fluid surface unchanged.

[0104] This solution utilizes a rangefinder and its mounting structure with constant height and angle, takes the rangefinder as a reference, and adjusts the height of the signal excitation module according to the distance measurement results, which can keep the angle and distance between the signal excitation module 5 and the fluid surface constant, thereby ensuring the consistency of the test results each time.

[0105] Specifically, Figure 8 As shown, the signal excitation module 5 is adjusted first during each detection process. Assuming that the liquid level in the flow tank 1 was at the A level in the last detection, the signal excitation module 5 was adjusted to the A position, and the liquid level was at the B level in this detection. In this detection, the distance measurement result of the rangefinder 9 is D1measured, corresponding to Figure 8 a2 in .

[0106] The included angle θ of the rangefinder 9 in the vertical direction is determined after installation and is stored in the detection module 4. After receiving the distance measurement data D1measured, the detection module 4 calculates the measured height H1measured according to the distance measurement result and the included angle θ, that is, Figure 8 h2 in

[0107] H1measured=D1measured·cosθ

[0108] Get the pre-stored standard height H, that is Figure 8 h1 in the figure, and according to the standard height H, the height difference ΔH = H1measured-H = h2-h1 is obtained;

[0109] The height of the signal excitation module 5 is adjusted according to the height difference ΔH. When the height difference is a positive number, the corresponding difference is adjusted downward. When the height difference is a negative number, the corresponding difference is adjusted upward. In this way, the adjustment direction and adjustment amplitude of the signal excitation module 5 can be obtained after the above processing based on the ranging result of the rangefinder.

[0110] Finally, the current height H1measured is stored as the standard height H for the next height adjustment.

[0111] In the use environment of the flow channel, the melt flows out of the furnace to the flow channel, and there is a certain height difference in the liquid level in the flow channel, and the liquid level is sometimes high and sometimes low. Through the above means, the signal excitation can be achieved in the best position, and the change of liquid level will not affect the strength of the excitation signal and cause deviation in the detection result.

[0112] Furthermore, in some usage environments, the flow channel is relatively flat and the height difference can be ignored, such as Figure 7 In some use environments, in order to ensure that the melt has good fluidity, the flow channel has a more obvious inclination angle, such as Fig. 9 As shown, at this time, in order to ensure the effectiveness of height adjustment, it is preferred to make the excitation light beam of the signal excitation module 5 perpendicular to the flow direction of the flow slot 1, so that the excitation light beams of the signal excitation modules 5 at different heights are always directed to the same cross section of the flow slot 1, and at the same time, the ranging signal and the excitation light beam of the ranging module are both directed to the same cross section of the flow slot. That is, it is ensured that the excitation light beam of the position signal excitation module and the ranging signal of the ranging module are both directed perpendicular to the flow direction of the fluid in the flow slot (note, not perpendicular to a certain width line on the cross section of the flow slot, but perpendicular to the flow direction of the fluid in the flow slot). At this time, as Figure 8 As shown, the excitation light beam of the signal excitation module at position A, the excitation light beam of the signal excitation module at position B and the ranging signal of the ranging module all point to the same cross-section of the flow channel. In this way, the height of the signal excitation module can still be directly adjusted according to the height difference between h2 and h1 to keep the excitation intensity of the signal excitation module on the liquid surface unchanged.

[0113] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0114] Although the present invention uses the terms such as flow channel 1; channel cover 2; channel cover opening and closing assembly 3; power frame 31; power module 32; lifting unit 33; power motor 34; roller 35; pulley block 36; suspension rope 37; detection module 4; signal excitation module 5; detection trigger module 6; positioning rod 7; upper telescopic cylinder 71; lower telescopic rod 72; fixing seat 73; positioning base 74; excitation module bracket 8; fixing rod 81; lifting rod 82; rangefinder 9; and site 10, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A material composition online sampling and detection device, used for detecting the material composition of a fluid flowing through a flow channel (1), characterized in that: The invention comprises a slot cover (2) arranged above a flow slot (1), the slot cover (2) being connected to a slot cover opening and closing component (3), the slot cover opening and closing component (3) being connected to a detection module (4), and opening the slot cover (2) or closing the slot cover (2) according to an opening instruction or a closing instruction of the detection module (4); The detection module (4) is also connected to the signal excitation module (5) and the detection trigger module (6); The detection module (4) initiates detection in response to the detection instruction of the detection trigger module (6) to send an opening instruction to the slot cover opening and closing component (3) and an excitation instruction to the signal excitation module (5); The excitation light beam and the light signal capturer of the signal excitation module (5) are both directed toward the area inside the flow slot (1) corresponding to the slot cover (2), so as to obtain a fluid reflection signal by exciting the fluid inside the flow slot (1) when the slot cover (2) is opened, and return the fluid reflection signal to the detection module (4) for component analysis.

2. The material composition online sampling and detection device according to claim 1 is characterized in that: The upper cover of the flow channel (1) is provided with a plurality of channel covers (2), and the plurality of channel covers (2) work together to isolate the inside of the flow channel (1) from the outside; The slot cover opening and closing assembly (3) corresponds to one or more slot covers (2); The slot cover opening and closing assembly (3) comprises a power frame (31) and a power module (32); The power frame (31) is arranged across the flow channel (1), and the power module (32) is fixed on the power frame (31) to open or close the corresponding channel cover (2).

3. The material composition online sampling and detection device according to claim 2 is characterized in that: The power module (32) comprises a lifting unit (33) and a power motor (34) connected to the lifting unit (33); The power motor (34) is offset and located above the slot cover (2), and the lifting unit (33) extends from the power motor (34) to just above the slot cover (2) to open or close the corresponding slot cover (2).

4. The material composition online sampling and detection device according to claim 3 is characterized in that: The lifting unit (33) comprises a roller (35), a pulley block (36) and a suspension rope (37); The roller (35) is connected to the power motor (34) and rolls circumferentially under the action of the power motor (34); The pulley block (36) is located directly above the slot cover (2) and is used to guide the suspension rope (37); The suspension rope (37) is connected to the slot cover (2), and extends upward from the slot cover (2) and is connected to the roller (35) through the pulley block (36).

5. The material composition online sampling and detection device according to claim 4 is characterized in that: One side of the slot cover (2) is hinged to the flow slot (1). When the lifting rope (37) is rolled up, the slot cover (2) opens upward along the hinged side, exposing the corresponding internal area of ​​the flow slot (1). When the lifting rope (37) is released, the slot cover (2) covers downward along the hinged side, covering the corresponding area of ​​the flow slot (1).

6. The material composition online sampling and detection device according to claim 5, characterized in that: The power frame (31) comprises a mounting plane, and the lifting unit (33) is mounted on the mounting plane; A positioning rod (7) vertically penetrates the installation plane and is used to position the opening and closing of the slot cover (2); The positioning rod (7) comprises an upper telescopic cylinder (71), a lower telescopic rod (72), a fixing seat (73) and a positioning base (74); The positioning base (74) is arranged on the corresponding slot cover (2); The fixing seat (73) is arranged on the installation plane; The upper telescopic cylinder (71) is connected to the fixed seat (73), the lower telescopic rod (72) is connected to the positioning base (74), and the upper telescopic cylinder (71) and the lower telescopic rod (72) are axially slidably connected to each other, so that the slot cover (2) presents a straight up and down movement trajectory during the opening and closing process.

7. The material composition online sampling and detection device according to claim 1, characterized in that: The signal excitation module (5) is mounted on an excitation module bracket (8); The excitation module bracket (8) comprises a fixing rod (81) and a lifting rod (82) axially movably connected to the fixing rod (81) and capable of axially lifting and lowering relative to the fixing rod (81); The signal excitation module (5) is installed on the lifting rod (82), and the fixed rod (81) is provided with a rangefinder (9); The bottom end of the lifting rod (82) is connected to a lifting mechanism, and the lifting mechanism and the rangefinder (9) are both connected to the detection module (4).

8. A material composition online sampling and detection method, characterized in that: The method includes: Initiating detection in response to a detection instruction; Outputting a cover opening instruction to the slot cover opening and closing component (3) so as to cause it to open the slot cover (2); Outputting an excitation instruction to a signal excitation module (5) so as to cause it to excite the fluid in the flow slot (1) corresponding to the slot cover (2); Receiving the fluid reflection signal collected by the signal excitation module (5); Material composition analysis is performed based on fluid reflection signals.

9. The material composition online sampling and detection method according to claim 8, characterized in that: It also includes receiving the distance measurement result of the distance meter (9); According to the distance measurement result, the height of the signal excitation module (5) is adjusted by a lifting mechanism to keep the angle and distance between the signal excitation module (5) and the fluid surface unchanged; In each detection process, the signal excitation module (5) is first adjusted in the following manner: Receiving the distance measurement result D1measured from the distance meter (9); The measured height H1measured is calculated based on the distance measurement result and the included angle θ of the distance meter (9) in the vertical direction: H1measured=D1measured·cosθ Obtain the pre-stored standard height H, and obtain the height difference ΔH=H1measured-H according to the standard height; adjusting the height of the signal excitation module (5) according to the height difference ΔH; The current height H1measured is stored as the standard height H for the next height adjustment.

10. The material composition online sampling and detection method according to claim 9, characterized in that: The excitation light beam of the signal excitation module is perpendicular to the flow direction of the flow channel (1), so that the excitation light beams of the signal excitation modules (5) at different heights are always projected onto the same cross section of the flow channel (1); The ranging signal and the excitation light beam of the ranging module are both directed to the same cross section of the flow cell.

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