CN209745364U - Photosensitive liquid level meter - Google Patents
Photosensitive liquid level meter Download PDFInfo
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- CN209745364U CN209745364U CN201920607784.2U CN201920607784U CN209745364U CN 209745364 U CN209745364 U CN 209745364U CN 201920607784 U CN201920607784 U CN 201920607784U CN 209745364 U CN209745364 U CN 209745364U
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Abstract
the utility model relates to a photosensitive level gauge belongs to level sensor technical field, solves current level gauge and also does not detect the inapplicable technical problem in thick liquid type material, and the scheme is: the device comprises a shell, a light-emitting component and a photosensitive component, wherein the shell is a cylindrical pipe body, a mounting flange is mounted at the upper part of the outer side wall of the shell, two cavities are arranged along the axis direction of the shell, strip-shaped light-passing grooves are formed in the adjacent side walls of the two cavities, and the distance between the upper edges of the light-passing grooves and the upper end surface of the shell is 30-50 mm; the light emitting component and the photosensitive component are respectively packaged in the packaging glass tubes, the two packaging glass tubes are respectively installed in the cavity and close to the upper end face of the shell, and the light emitting component wiring terminals and the photosensitive component wiring terminals respectively penetrate through the packaging glass tubes and extend to the outside of the shell. The utility model has high liquid level precision, which reaches the millimeter level; the wind tunnel effect can generate self-cleaning effect on the glass surface of the light-emitting and light-detecting part, so that the accuracy is ensured; simple structure and convenient installation.
Description
Technical Field
The utility model belongs to the technical field of level sensor, concretely relates to photosensitive level gauge for take the cauldron formula reactor of stirring, when reaction material pump income was discharged, material liquid level real-time measurement and control at reasonable within range to the reation kettle.
background
Tank reactors are used in large quantities in the chemical and chemical industries. In the kettle reactor of the continuous slurry bed, the reaction materials are simultaneously fed and discharged, and the materials in the kettle are in a slurry state. In order to control the liquid level in the reaction kettle within a certain normal range, the liquid level needs to be measured in real time and controlled by various means. The process conditions (turbid materials, 0-5 atmospheric pressure, 50-120 ℃ and central impeller stirring) required by the reaction make the traditional liquid level meter unable to accurately measure.
The commonly used liquid level meters in the market at present comprise an ultrasonic (radar) liquid level meter, a laser liquid level meter, a floating ball type magnetic turning plate liquid level meter, a side-mounted liquid level meter and the like.
the ultrasonic liquid level meter mainly calculates the liquid level height by detecting the time of sending and reflecting ultrasonic waves, so the ultrasonic liquid level meter is easily influenced by the energy loss of ultrasonic wave propagation and is not suitable for being used in environments with severe wave absorption, such as slurry and powder.
the laser liquid level meter measures the liquid level height through the irradiation and reflection of laser, but a laser transmitter and a receiver which are arranged on the inner wall of a huge reaction kettle are far away from each other, so that signals are weak, and accurate reading is difficult to achieve.
The glass tube side-mounted liquid level meter is arranged at the side end of the container, so that the pipe opening is easy to cause the accumulation of solid slurry contents to cause blockage.
The float-type magnetic flap level gauge indicates the liquid level through the up-and-down movement of a float ball on the liquid level and the magnet, has good working effect in the static liquid level, and is also a level gauge which is more frequently used in the current market. However, when the liquid level meter is used in a dynamic environment (in a reaction kettle containing a stirring impeller), the up-and-down movement of the floating ball is not accurate due to the friction force caused by the liquid flow, for example, the floating ball is difficult to start moving due to large static friction force, so that the fine liquid level change cannot be captured, and the precision reading is reduced. In addition, even if a wave-proof tube is added outside the floating ball to reduce the influence of liquid level fluctuation on the up-and-down movement of the floating ball, the accurate reading of the measurement of the magnetic turning plate liquid level meter is still limited by the diameter of the turning magnet.
The tuning fork level gauge measures the liquid level by transmitting and receiving sound waves, similar to ultrasonic waves, and when the sound waves are subjected to material resistance movement, the amplitude is sharply reduced and the frequency and the phase are significantly changed, so that the sound waves are detected by an internal electronic circuit. Its operation is truly immune to flow, turbulence, bubbles, foam, vibration, solids content, coating, liquid properties and product variations, and tuning fork level gauges are more commonly used as level switches, damping vibration is less varying with liquid level when the tuning fork bottom has submerged in the liquid level, and accurate data cannot be provided for a specific liquid level height.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: in order to solve the technical problem that the existing liquid level meter is not suitable for use in the thick liquid type material detection, the utility model provides a photosensitive liquid level meter.
The utility model discloses a following technical scheme realizes.
A light sensitive liquid level gauge comprising a housing, a light emitting member and a light sensitive member, wherein: the shell is a cylindrical pipe body, the upper part of the outer side wall of the shell is provided with an installation flange used for being connected with a reaction kettle, two cavities are arranged along the axis direction of the shell, the adjacent side walls of the two cavities are provided with strip-shaped light-transmitting grooves used for communicating the two cavities, and the distance between the upper edges of the light-transmitting grooves and the upper end surface of the shell is 30-50 mm; the light emitting component and the photosensitive component are respectively packaged in the packaging glass tubes, the two packaging glass tubes are respectively installed in the cavity and close to the upper end face of the shell, and the light emitting component wiring terminals and the photosensitive component wiring terminals respectively penetrate through the packaging glass tubes and extend to the outside of the shell.
Further, the width of the light-transmitting groove is more than or equal to 5 mm.
Further, the light emitting component is an LED lamp strip or an LED hard lamp strip, and the photosensitive component is a series-connected photosensitive resistor array.
A method of using a light sensitive liquid level gauge comprising the steps of:
S1, respectively packaging the light-emitting component and the photosensitive component into a packaging glass tube, and extending the light-emitting component wiring terminal and the photosensitive component wiring terminal to the outside of the packaging glass tube;
S2, respectively installing the packaging glass tube packaged with the luminous component and the packaging glass tube packaged with the photosensitive component in two cavities of the shell, and rotating the packaging glass tube packaged with the luminous component to enable the luminous direction of the luminous component to face to the light-passing groove; rotating the packaging glass tube packaged with the photosensitive component to enable the resistor of the photosensitive component to face the light through groove laterally;
S3, fixedly installing the shell provided with the light-emitting component and the photosensitive component at the top of the reaction kettle through an installation flange, connecting a wiring terminal of the light-emitting component with a power supply, and lighting the light-emitting component; the photosensitive part connecting terminal is connected with a resistance-length secondary instrument, slurry reaction materials are added into the reaction kettle, when the liquid level of the reaction materials rises to a certain position from bottom to top, a light-transmitting groove close to the lower end part of the shell is shielded by the reaction materials, the resistance of the photosensitive element changes correspondingly, and the liquid level of the reaction materials can be measured; and in the operation process of the reaction kettle, the liquid level change condition of the reaction materials is displayed by a secondary instrument in real time.
Further, in the step S3, the data collected by the secondary meter is transmitted to the liquid level control device through a signal line.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a photosensitive liquid level meter and a using method thereof, the liquid level precision is high and reaches millimeter level; the wind tunnel effect can generate self-cleaning effect on the glass surface of the light-emitting and light-detecting part, so that the accuracy is ensured; simple structure and convenient installation.
Drawings
FIG. 1 is a schematic sectional view of the front view of the present invention;
Fig. 2 is a schematic view of the bottom view of the present invention.
In the figure, 1 is a photosensitive part connecting terminal, 2 is a luminous part connecting terminal, 3 is a mounting flange, 4 is a luminous part, 5 is a photosensitive part, and 6 is a light through groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
A light-sensitive gauge as shown in fig. 1 and 2, comprising a housing, a light emitting member 4 and a light sensitive member 5, wherein: the shell is a cylindrical pipe body, the upper part of the outer side wall of the shell is provided with an installation flange 3 used for being connected with a reaction kettle, two cavities are arranged along the axis direction of the shell, the adjacent side walls of the two cavities are provided with strip-shaped light-transmitting grooves 6 used for communicating the two cavities, and the distance between the upper edges of the light-transmitting grooves 6 and the upper end surface of the shell is 30-50 mm; the light emitting component 4 and the photosensitive component 5 are respectively packaged in the packaging glass tubes, the two packaging glass tubes are respectively installed in the cavity and close to the upper end face of the shell, and the light emitting component wiring terminal 2 and the photosensitive component wiring terminal 1 respectively penetrate through the packaging glass tubes and extend to the outside of the shell.
Further, the width of the light-transmitting groove 6 is more than or equal to 5 mm.
Further, the light emitting component 4 is an LED lamp strip or an LED hard lamp strip, and the photosensitive component 5 is a series-connected photosensitive resistor array.
A method of using a light sensitive liquid level gauge comprising the steps of:
S1, respectively packaging the light-emitting component 4 and the photosensitive component 5 into a packaging glass tube, and extending the light-emitting component wiring terminal 2 and the photosensitive component wiring terminal 1 to the outside of the packaging glass tube;
S2, respectively installing the packaging glass tube packaged with the luminous component 4 and the packaging glass tube packaged with the photosensitive component 5 in two cavities of the shell, and rotating the packaging glass tube packaged with the luminous component 4 to enable the luminous direction of the luminous component 4 to face to the light-transmitting groove 6; rotating the packaging glass tube packaged with the photosensitive component 5 to enable the resistor of the photosensitive component 5 to face the light-transmitting groove 6 laterally;
s3, fixedly installing the shell provided with the light-emitting component 4 and the photosensitive component 5 at the top of the reaction kettle through the installation flange 3, connecting the light-emitting component wiring terminal 2 with a power supply, and lighting the light-emitting component 4; the photosensitive part wiring terminal 1 is connected with a secondary instrument with resistance-length, slurry-like reaction materials are added into the reaction kettle, when the liquid level of the reaction materials rises to a certain position from bottom to top, the light-transmitting groove 6 close to the lower end part of the shell is shielded by the reaction materials, the resistance of the photosensitive element changes correspondingly, and the liquid level of the reaction materials can be measured; and in the operation process of the reaction kettle, the liquid level change condition of the reaction materials is displayed by a secondary instrument in real time.
Further, in the step S3, the data collected by the secondary meter is transmitted to the liquid level control device through a signal line.
The liquid level meter provided in the first embodiment is applied to a 50L reaction kettle, and the length is 40 cm. The light emitting component 4 is packaged in a glass tube with the wall thickness of 3mm by using a 4mm wide LED hard lamp strip, and is packaged in a light emitting component hole, and light is emitted towards the direction of the light through groove 6 in the middle of the liquid level meter. The photosensitive part 5 uses a photosensitive resistor array formed by connecting 3mm patch photosensitive resistors in series, and the number of single bright resistors is 15k omega, and is 120. The resistor array is sealed in a glass tube with the wall thickness of 3mm, a photometric element hole is arranged in the glass tube, and the resistor side faces the middle part of the liquid level meter and is provided with a light groove 6 direction and is opposite to the light emitting part. The width of the light-transmitting groove 6 is 10 mm. The liquid level meter is arranged at the top of the reaction kettle by a mounting flange 3. The luminous component wiring terminal 2 is connected with a power supply and lights the luminous component 4; the photosensitive part wiring terminal 1 is connected with a secondary instrument with resistance value-length, and the change condition of the liquid level is displayed or supplied to a liquid level control device by the secondary instrument in real time.
Example two
The structure of the liquid level meter in the second embodiment is the same as that of the liquid level meter in the first embodiment.
The liquid level meter provided by the second embodiment is applied to a 5m3 reaction kettle with the length of 100 cm. The light emitting component 4 is an LED lamp strip with the width of 4mm, is packaged in a glass tube with the wall thickness of 3mm, is loaded into a light emitting component hole, and emits light towards the direction of the light through groove 6 in the middle of the liquid level meter. The photosensitive part 5 is a photosensitive resistor array formed by connecting photosensitive resistors of 3mm patches in series, and 300 single light resistors are respectively connected with the photosensitive part 10 k. The resistor array is sealed in a glass tube with the wall thickness of 3mm, a photometric element hole is arranged in the glass tube, and the resistor side faces the direction of the light through groove 6 in the middle of the liquid level meter and is opposite to the light emitting part. The liquid level meter is arranged at the top of the reaction kettle by a mounting flange 3 with the width of the light-transmitting groove 6 being 15mm, and the tail end of the liquid level meter is fixed by corresponding parts. The luminous component wiring terminal 2 is connected with a power supply and lights the luminous component 4; the wiring terminal of the photosensitive component is connected with a secondary instrument with resistance-length, and the change condition of the liquid level is displayed or supplied to the liquid level control device by the secondary instrument in real time.
the above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. the utility model provides a photosensitive liquid level meter, it includes casing, luminous component and light-sensitive part, its characterized in that: the shell is a cylindrical pipe body, the upper part of the outer side wall of the shell is provided with an installation flange used for being connected with a reaction kettle, two cavities are arranged along the axis direction of the shell, the adjacent side walls of the two cavities are provided with strip-shaped light-transmitting grooves used for communicating the two cavities, and the distance between the upper edges of the light-transmitting grooves and the upper end surface of the shell is 30-50 mm; the light emitting component and the photosensitive component are respectively packaged in the packaging glass tubes, the two packaging glass tubes are respectively installed in the cavity and close to the upper end face of the shell, and the light emitting component wiring terminals and the photosensitive component wiring terminals respectively penetrate through the packaging glass tubes and extend to the outside of the shell.
2. A light sensitive level gauge as claimed in claim 1, wherein: the width of the light-transmitting groove is more than or equal to 5 mm.
3. A light sensitive level gauge as claimed in claim 1, wherein: the light emitting component is an LED lamp strip or an LED hard lamp strip, and the photosensitive component is a series-connected photosensitive resistor array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607784.2U CN209745364U (en) | 2019-04-29 | 2019-04-29 | Photosensitive liquid level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607784.2U CN209745364U (en) | 2019-04-29 | 2019-04-29 | Photosensitive liquid level meter |
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| Publication Number | Publication Date |
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| CN209745364U true CN209745364U (en) | 2019-12-06 |
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| CN201920607784.2U Active CN209745364U (en) | 2019-04-29 | 2019-04-29 | Photosensitive liquid level meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207788A (en) * | 2019-04-29 | 2019-09-06 | 中国科学院山西煤炭化学研究所 | A kind of photosensitive liquidometer and its application method |
-
2019
- 2019-04-29 CN CN201920607784.2U patent/CN209745364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207788A (en) * | 2019-04-29 | 2019-09-06 | 中国科学院山西煤炭化学研究所 | A kind of photosensitive liquidometer and its application method |
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