阅读说明：本技术 一种浓密机内部液体固含量在线检测装置及检测方法 (Online detection device and detection method for solid content of liquid in thickener ) 是由 张美杰 刘峰 程永强 和奔流 刘红星 李建军 祝永红 王丽艳 张军丽 杨倩 张建 于 2021-08-26 设计创作，主要内容包括：本发明属于浓密机技术领域,尤其涉及一种浓密机内部液体固含量在线检测装置及检测方法；包括与浓密机出料口通过第一输送管道相连的粗四氯化钛贮罐进料口,所述第一输送管上设置有电磁阀；所述浓密机内壁安装有光强度探测器和光源,光强度探测器的探测头朝向光源；本发明根据液体中固体颗粒影响光线传播的效应,通过在一定的距离上,固体颗粒对光纤减弱的程度,判断液体中的固含量；当光强度传感器检测到光照强度大于光照强度阈值时,开启第一电磁阀,将符合固含量标准的液体输送至粗四氯化钛贮罐中,实现固含量的自动检测以及四氯化钛液体的自动输送,避免需要进行采样化验,费时费力的问题。(The invention belongs to the technical field of thickeners, and particularly relates to an online detection device and a detection method for the solid content of liquid in a thickener; the device comprises a feeding hole of a coarse titanium tetrachloride storage tank, wherein the feeding hole is connected with a discharge hole of a thickener through a first conveying pipeline; a light intensity detector and a light source are installed on the inner wall of the thickener, and a detection head of the light intensity detector faces the light source; according to the effect of solid particles in liquid on light transmission, the solid content in the liquid is judged according to the weakening degree of the solid particles to the optical fiber at a certain distance; when the light intensity sensor detects that the illumination intensity is greater than the illumination intensity threshold value, open first solenoid valve, will accord with the liquid transport of solid content standard to thick titanium tetrachloride in the basin, realize the automated inspection of solid content and the automatic transport of titanium tetrachloride liquid, avoid need carry out the sampling chemical examination, the problem that wastes time and energy.)

1. The on-line detection device for the solid content of liquid in the thickener is characterized by comprising a feed inlet of a crude titanium tetrachloride storage tank (3) which is connected with a discharge hole of the thickener (1) through a first conveying pipeline (5), wherein a first electromagnetic valve (7) is arranged on the first conveying pipeline;

a light intensity detector (14) and a light source (15) are installed on the inner wall of the thickener (1), and a detection head of the light intensity detector (14) faces the light source (15); the light intensity detector (14) and the first electromagnetic valve (7) are communicated with the controller, and the light source (15) is controlled to be opened and closed through a control button.

2. The on-line detection device for detecting the solid content of the liquid in the interior of the thickener according to claim 1, characterized in that a sensor (8) for detecting the liquid level in the interior of the thickener (1) is arranged in the thickener (1), and the sensor (8) is communicated with the controller.

3. The online detecting device for the solid content of the liquid in the thickener according to claim 1, wherein a feed inlet of the thickener (1) is connected with a discharge outlet of the head tank (2) through a second conveying pipeline (4), and a second electromagnetic valve (6) is installed on the second conveying pipeline (4); the second solenoid valve (6) is in communication with a controller.

4. The device for detecting the solid content of the liquid in the thickener according to the claim 1, characterized in that the light intensity detector (14) and the light source (15) are arranged at two sides of the discharge port of the thickener (1).

5. The online detection device for the liquid solid content in the interior of the thickener according to any one of claims 1 to 4, characterized in that the distance from the bottom of the elevated tank (2) to the ground is greater than or equal to the distance from the top of the thickener (1) to the ground, and the distance from the bottom of the thickener (1) to the ground is greater than or equal to the distance from the top of the crude titanium tetrachloride storage tank (3) to the ground.

6. The device for detecting the solid content of the liquid in the thickener according to claim 5, wherein the thickener (1) is mounted on a first supporting platform (9), the first supporting platform (9) is supported by a first supporting frame (10), the elevated tank (2) is mounted on a second supporting platform (11), and the second supporting platform (11) is supported and mounted on the first supporting platform (9) by a second supporting frame (12).

7. The on-line detection device for the solid content of the liquid in the thickener according to claim 6, characterized in that a step (16) for the staff to get on the first supporting platform (9) is arranged on any side of the first supporting platform (9).

8. The on-line detection device for the solid content of liquid in the interior of the thickener according to claim 7, characterized in that a ladder (13) for facilitating a worker to get on the second supporting platform (11) is arranged on any side of the second supporting platform (11).

9. The method for detecting the solid content of the liquid in the thickener on line is characterized by comprising an illumination intensity threshold value, a liquid level upper limit threshold value and a liquid level lower limit threshold value which are preset in a controller;

when the thickener (1) is produced by adopting a continuous sedimentation process, when the light intensity detector (14) detects that the light intensity is lower than the illumination intensity threshold value, the signal is transmitted to the controller, the controller controls the first electromagnetic valve (7) and the second electromagnetic valve (6) to be closed, the conveying passages of corresponding pipelines are closed, and the liquid in the thickener (1) continues to be sedimentated; when the light intensity detector (14) detects that the light intensity is higher than the illumination intensity threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve (7) and the second electromagnetic valve to be opened, so that the conveying passages of the corresponding pipelines are opened;

when the thickener (1) is produced by adopting an intermittent sedimentation process, when the sensor (8) detects that the liquid level in the thickener (1) reaches a preset first liquid level upper limit threshold value, the signal is transmitted to the controller, the controller controls the second electromagnetic valve (6) to be closed, the conveying passage of the second conveying pipeline (4) is closed, and at the moment, the first electromagnetic valve (7) is also in a closed state, namely the passage of the first conveying pipeline (5) is in a closed state; the sedimentation starts in the thickener (1), and when the light intensity detector (14) detects that the illumination intensity is greater than the illumination intensity threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve (7) to be opened and opens the passage of the first conveying pipeline (5); when the sensor (8) detects that the liquid level in the thickener (1) is equal to a liquid level lower limit threshold value, the signal is transmitted to the controller, the controller controls the first electromagnetic valve (7) to be closed, and the passage of the first conveying pipeline (5) is closed; and the controller controls the second electromagnetic valve (6) to be opened, and the passage of the second conveying pipeline (4) is opened.

Technical Field

The invention belongs to the technical field of thickeners, and particularly relates to an online detection device and a detection method for the solid content of liquid in a thickener.

Background

At present, in the process of producing titanium tetrachloride by using a molten salt chlorination process, because the solid content in the crude titanium tetrachloride is high, the crude titanium tetrachloride can be conveyed to a refining workshop for refining after being settled by a thickener, and solid matters in the crude titanium tetrachloride are main sources of V, so that the pressure of vanadium removal in a refining workshop section can be reduced and the refining efficiency can be improved by the titanium tetrachloride after being settled. The prior operation process of the thickener comprises an intermittent method and a continuous method sedimentation process; however, in any process, the solid content is judged before the titanium tetrachloride enters the crude titanium tetrachloride storage tank, and the titanium tetrachloride can be discharged by the thickener only when the solid content is qualified. At present, clear liquid in a thickener is sampled and sent to a laboratory to measure the solid content in the coarse titanium tetrachloride through a centrifugal method or a suction filtration method, the method is time-consuming and labor-consuming in measurement, and in the sampling and testing process, the titanium tetrachloride is in contact with moisture in the air, a large amount of smoke and corrosive substances can be generated, and certain potential safety hazards exist.

Disclosure of Invention

The invention provides an online detection device and a detection method for the solid content of liquid in a thickener, and aims to solve the problems that the solid content in crude titanium tetrachloride is detected by adopting the conventional method, time and labor are wasted, and certain potential safety hazards exist.

An online detection device for the solid content of liquid in a thickener comprises a feeding port of a coarse titanium tetrachloride storage tank, wherein the feeding port of the coarse titanium tetrachloride storage tank is connected with a discharging port of the thickener through a first conveying pipeline;

a light intensity detector and a light source are installed on the inner wall of the thickener, and a detection head of the light intensity detector faces the light source; the light intensity detector and the first electromagnetic valve are both communicated with the controller, and the light source is controlled to be opened and closed through a control button.

According to the effect of solid particles in liquid on light transmission, the solid content in the liquid is judged according to the degree of the solid particles weakening light at a certain distance. The detection of the solid content in the liquid is realized by arranging the light source and the light intensity sensor in the thickener; the illumination intensity can be converted according to the solid content in the liquid; therefore, the illumination intensity detected by the light intensity sensor corresponding to the solid content meeting the standard is obtained only through experiments, the illumination intensity is used as the illumination intensity threshold value arranged in the controller, when the light intensity sensor detects that the illumination intensity is greater than the illumination intensity threshold value, the first electromagnetic valve is opened, then the liquid meeting the solid content standard is conveyed to the crude titanium tetrachloride storage tank, the automatic detection of the solid content is realized, the automatic conveying of the titanium tetrachloride liquid is realized, the problem that the sampling and the testing are needed to be carried out, the time and the labor are wasted is solved, and meanwhile, the potential safety hazard is avoided.

Furthermore, a sensor for detecting the liquid level inside the thickener is arranged inside the thickener and is communicated with the controller. The sensor is used for detecting the liquid level in the thickener, so that the working personnel can know the liquid level information in the thickener all the time.

Further, a feed inlet of the thickener is connected with a discharge outlet of the elevated tank through a second conveying pipeline, and a second electromagnetic valve is mounted on the second conveying pipeline; the second solenoid valve is in communication with a controller. The second electromagnetic valve is arranged, so that the second electromagnetic valve can be opened and closed through liquid level information detected by the sensor, namely when the liquid level information detected by the sensor is in an upper limit threshold value, the second electromagnetic valve can be controlled by the control module to close a passage of the second conveying pipeline; when the sensor detects that the liquid level information is at the lower limit threshold value, the control module can control the second electromagnetic valve to open the passage of the second conveying pipeline.

Further, the distance from the bottom of the elevated tank to the ground is greater than or equal to the distance from the top of the thickener to the ground, and the distance from the bottom of the thickener to the ground is greater than or equal to the distance from the top of the crude titanium tetrachloride storage tank to the ground. So that the liquid flows into the thickener from the elevated tank and then flows into the coarse titanium tetrachloride storage tank from the thickener in a mode of height difference.

Preferably, the thickener is installed on a first supporting platform, the first supporting platform is supported by a first supporting frame, the elevated tank is installed on a second supporting platform, and the second supporting platform is supported and installed on the first supporting platform by a second supporting frame.

Any one side of the first supporting platform is provided with a step ladder convenient for a worker to board the first supporting platform.

And a ladder convenient for the working personnel to climb onto the second supporting platform is arranged on any one side of the second supporting platform.

An online detection method for the solid content of liquid in a thickener comprises the steps of presetting an illumination intensity threshold, a liquid level upper limit threshold and a liquid level lower limit threshold in a controller;

when the thickener is produced by adopting a continuous sedimentation process, when the light intensity detector detects that the light intensity is lower than the illumination intensity threshold value, the signal is transmitted to the controller, the controller controls the first electromagnetic valve and the second electromagnetic valve to be closed, the conveying passages of the corresponding pipelines are closed, and the liquid in the thickener is continuously sedimented; when the light intensity detector detects that the light intensity is higher than the illumination intensity threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve and the second electromagnetic valve to be opened, so that the conveying passages of the corresponding pipelines are opened;

when the thickener is produced by adopting an intermittent sedimentation process, when the sensor detects that the liquid level in the thickener reaches a preset first liquid level upper limit threshold value, the signal is transmitted to the controller, the controller controls the second electromagnetic valve to be closed, the conveying passage of the second conveying pipeline is closed, and at the moment, the first electromagnetic valve is also in a closed state, namely the passage of the first conveying pipeline is in a closed state; the sedimentation starts in the thickener, and when the light intensity detector detects that the illumination intensity is greater than the illumination intensity threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve to open and opens the passage of the first conveying pipeline; when the sensor detects that the liquid level in the thickener is equal to the liquid level lower limit threshold value, the signal is transmitted to the controller, the controller controls the first electromagnetic valve to be closed, and the passage of the first conveying pipeline is closed; and the controller controls the second electromagnetic valve to open and open the passage of the second conveying pipeline.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention realizes the on-line monitoring of the solid content in the thickener, realizes the automatic discharge of the qualified titanium tetrachloride liquid and improves the production efficiency of the thickener.

2. According to the invention, through online monitoring and automatic discharge of solid content in the thickener, workers are prevented from contacting hazardous chemicals such as titanium tetrachloride, and potential safety hazards are reduced.

3. According to the invention, the automation of the production of the thickener is realized by detecting the solid content, arranging the sensor for detecting the liquid level of the thickener and the electromagnetic valves arranged on the pipelines connected with the feed inlet and the discharge outlet of the thickener.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic overall view of another aspect of the present invention;

FIG. 3 is a schematic view of the internal structure of the thickener of the present invention;

description of reference numerals: 1. a thickener; 2. a head tank; 3. a crude titanium tetrachloride storage tank; 4. a second delivery conduit; 5. a first delivery conduit; 6. a second solenoid valve; 7. a first solenoid valve; 8. a sensor; 9. a first support platform; 10. a first support frame; 11. a second support platform; 12. a second support frame; 13. climbing a ladder; 14. a light intensity detector; 15. a light source; 16. provided is a step ladder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings 1 to 3;

an online detection device for the solid content of liquid in a thickener comprises a feed inlet of a coarse titanium tetrachloride storage tank 3 connected with a discharge port of the thickener 1 through a first conveying pipeline 5, wherein a first electromagnetic valve 7 is arranged on the first conveying pipeline;

a light intensity detector 14 and a light source 15 are arranged on the inner wall of the thickener 1, and a detection head of the light intensity detector 14 faces the light source 15; the light intensity detector 14 and the first electromagnetic valve 7 are both communicated with a controller, and the light source 15 is controlled to be turned on and off through a control button.

According to the effect of solid particles in liquid on light transmission, the solid content in the liquid is judged according to the degree of the solid particles weakening light at a certain distance. The detection of the solid content in the liquid is realized by arranging the light source 15 and the light intensity sensor 8 in the thickener 1; the illumination intensity can be converted according to the solid content in the liquid; therefore, only need the experiment to obtain the illumination intensity that light intensity sensor 8 that the solid content that accords with the standard corresponds detects, and regard this illumination intensity as the illumination intensity threshold value of setting in the controller, when light intensity sensor 8 detects that illumination intensity is greater than the illumination intensity threshold value, open first solenoid valve 7, then carry the liquid that accords with the solid content standard to thick titanium tetrachloride basin 3 in, the automated inspection of solid content has been realized, and the automatic transport of titanium tetrachloride liquid, avoid needing to carry out the sampling chemical examination, the problem that wastes time and energy, the production of potential safety hazard has also been avoided simultaneously.

It should be noted that the light intensity detector 14 and the light source 15 used in the present invention both have waterproof function and are corrosion resistant.

The internal installation of thickener 1 is used for detecting the sensor 8 of 1 inside liquid level of thickener, sensor 8 and controller communication. The liquid level inside the thickener 1 is detected through the sensor 8, so that a worker can know the liquid level information in the thickener 1 at any time.

The feed inlet of the thickener 1 is connected with the discharge outlet of the elevated tank 2 through a second conveying pipeline 4, and a second electromagnetic valve 6 is arranged on the second conveying pipeline 4; the second solenoid valve 6 is in communication with the controller. By arranging the second electromagnetic valve 6, the second electromagnetic valve 6 can be opened and closed through liquid level information detected by the sensor 8, namely when the liquid level information detected by the sensor 8 is at an upper limit threshold value, the second electromagnetic valve 6 can be controlled by the control module to close the passage of the second conveying pipeline 4; when the sensor 8 detects that the liquid level information is at the lower threshold value, the second electromagnetic valve 6 can be controlled by the control module to open the passage of the second conveying pipeline 4.

The distance from the bottom of the elevated tank 2 to the ground is greater than or equal to the distance from the top of the thickener 1 to the ground, and the distance from the bottom of the thickener 1 to the ground is greater than or equal to the distance from the top of the crude titanium tetrachloride storage tank 3 to the ground. So that the liquid flows into the thickener 1 from the elevated tank 2 and then flows into the crude titanium tetrachloride storage tank 3 from the thickener 1 through the mode of height difference.

The thickener 1 is arranged on a first supporting platform 9, the first supporting platform 9 is supported by a first supporting frame 10, the elevated tank 2 is arranged on a second supporting platform 11, and the second supporting platform 11 is supported and arranged on the first supporting platform 9 by a second supporting frame 12.

Any one side of the first supporting platform 9 is provided with a step 16 convenient for the working personnel to get on the first supporting platform 9.

Any side of the second support platform 11 is provided with a ladder 13 which is convenient for the working personnel to get on the second support platform 11.

The optimal installation positions of the light intensity detector 14 and the light source 15 are that the light intensity detector 14 is installed below the discharge port of the thickener 1, namely, as shown in fig. 3, the light intensity detector 14 is located between the bottom of the thickener 1 and the discharge port, the light intensity detector 14 is installed above the discharge port of the thickener 1 and is located between the top of the thickener 1 and the discharge port; the advantage of the above installation is that the sediment is gradually increased after the sedimentation is performed, when the sediment is increased to cover the light source 15, the light intensity signal detected by the light intensity detector 14 is sharply reduced, and when the light intensity signal is found to be sharply reduced, the production is stopped, and the sedimented substrate in the thickener 1 is cleaned; through the solid content of mainly detecting 1 discharge gate of thickener, avoid installing when detecting in other positions, the solid content is up to standard, but the solid content of discharge gate department is not up to standard, leads to the problem of inputing the precipitate into thick titanium tetrachloride storage tank 3.

An online detection method for the solid content of liquid in a thickener comprises the steps of presetting an illumination intensity threshold, a liquid level upper limit threshold and a liquid level lower limit threshold in a controller;

when the thickener 1 is produced by adopting a continuous sedimentation process, when the light intensity detector 14 detects that the light intensity is lower than the illumination intensity threshold value, the signal is transmitted to the controller, the controller controls the first electromagnetic valve 7 and the second electromagnetic valve 6 to be closed, the conveying passages of the corresponding pipelines are closed, and the liquid in the thickener 1 continues to be sedimented; when the light intensity detector 14 detects that the light intensity is higher than the illumination intensity threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve 7 and the second electromagnetic valve to be opened, so that the conveying passages of the corresponding pipelines are opened;

when the thickener 1 is produced by adopting an intermittent sedimentation process, when the sensor 8 detects that the liquid level in the thickener 1 reaches a preset first liquid level upper limit threshold value, the signal is transmitted to the controller, the controller controls the second electromagnetic valve 6 to be closed, the conveying passage of the second conveying pipeline 4 is closed, and at the moment, the first electromagnetic valve 7 is also in a closed state, namely the passage of the first conveying pipeline 5 is in a closed state; the sedimentation starts in the thickener 1, and when the light intensity detector 14 detects that the illumination intensity is greater than the illumination intensity threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve 7 to be opened and opens the passage of the first conveying pipeline 5; when the sensor 8 detects that the liquid level in the thickener 1 is equal to the liquid level lower limit threshold value, the signal is transmitted to the controller, and the controller controls the first electromagnetic valve 7 to be closed and closes the passage of the first conveying pipeline 5; and the controller controls the second electromagnetic valve 6 to be opened to open the passage of the second conveying pipeline 4.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.