110 results about "Level sensor" patented technology

The invention discloses a roof separation online monitoring method, and relates to the technical field of roof separation monitoring. Comprising the following steps that a plurality of sensors are arranged at different layers of a mine roof, different types of sensor arrangement schemes are selected according to geological conditions so as to comprehensively collect rock stratum change data, wide coverage and comprehensive data collection are ensured, and through multi-layer sensor arrangement, dynamic sampling frequency adjustment and multi-dimensional data fusion analysis, the rock stratum change data can be obtained. The system improves the accuracy of roof separation monitoring, realizes self-adaptive early warning for different geological environments in combination with an environment feature model, and reduces the risk of false alarm and missing alarm. The system can dynamically adjust the sampling frequency, capture the key change process, and continuously optimize the early warning parameters to avoid the problem of'monitoring blind areas' or strategy outdated, thereby improving the real-time performance, flexibility and stability of mine monitoring, and remarkably improving the mine safety management efficiency and intelligent level.

The application discloses an oil level sensor for oil tank oil quantity detection, which comprises a sealing plate, a mounting table integrally formed on the upper surface of the sealing plate, a liquid level sensor and a float oil quantity sensor fixed on the lower surface of the mounting table, a connecting rod rotatably arranged on the lower surface of the float oil quantity sensor, a hollow float ball fixed on the lower end of the connecting rod, a positioning pipe arranged in the hollow float ball and fixed on the inside of the positioning pipe, a limiting hole arranged in the center of the hollow float ball, trumpet mouths arranged on both ends of the limiting hole, a limiting rod arranged in the limiting hole, a connecting rod fixed on the upper end of the limiting rod and a limiting plate arranged on the lower end of the connecting rod. The application improves the structure of the float in the existing oil level sensor, can make the float have a larger measuring range, improve the measuring precision of the oil level, can limit the measuring path of the float, and can keep the oil level sensor for a long time of accurate measurement without frequent maintenance, so it is suitable for wide popularization and application.

The invention relates to the technical field of anchor rod length detection, and discloses an anchor rod length detection device for shaft engineering and a detection method.The anchor rod length detection device comprises a protection frame, a sealing door is hinged to the top of the protection frame, a rubber plate is fixedly connected to the inner wall of the protection frame, an instrument host is arranged in the protection frame, and a sensor connecting line is inserted into the top of the instrument host; a sensor is inserted into the end, away from the instrument host, of the sensor connecting line, a threaded rod is rotationally connected to the end of the sensor, a super-magnetic source connecting line is inserted into the top of the instrument host, and a super-magnetic source is inserted into the end, away from the instrument host, of the super-magnetic source connecting line. The surface of the anchor rod is sleeved with the mounting cylinder, at the moment, the receiving end of the sensor makes contact with the end of the anchor rod, the output end of the super-magnetic source makes contact with the end of the anchor rod and is kept horizontal with the anchor rod, and the sensor transmits received signals to the instrument host through the sensor connecting line; therefore, the length of the anchor rod embedded into the soil layer is detected.

A fluid level sensor assembly includes a first housing part having a fluid inlet and a fluid outlet and a fluid flow channel between the inlet and the outlet. The assembly also includes a sensor housing part formed on or integral with the first housing part and defining a sensing flow channel between a sensor end and a closed end, and has an opening from the sensing flow channel to the fluid flow channel of the first housing part. The assembly also includes level sensor components provided in the sensor flow channel at the sensor end, the level sensor components comprising: an actuator, and a switch component. The actuator and the switch component are arranged in the sensing flow channel such that when the pressure fluid in the fluid flow channel increases to increase the pressure in the sensing flow channel.

A level sensor is provided that facilitates communication with an external device. The level sensor comprises a level determination unit and a web server. The level determination unit determines the fill level of a medium in the container. The level sensor includes a web server that provides a monitor displaying the fill level determined by the level determination unit.

To provide a level sensor inspection device that can reduce a workload of a worker and can inspect whether or not a level sensor functions normally.SOLUTION: The invention relates to a level sensor inspection device used for inspection of a float-type level sensor which is provided in an upper portion of a liquid storage chamber of a liquid storage tank and which closes a bottom valve in the liquid storage chamber when a float rises. The level sensor inspection device includes: an air supply hose that conveys compressed air of a pressure higher than atmospheric pressure into the liquid storage chamber; and an air ejection pipe that is connected to a distal end portion of the air supply hose and ejects the compressed air to a lower portion of the level sensor from below the level sensor. The float can be raised by ejecting the compressed air from the air ejection pipe toward the float.SELECTED DRAWING: Figure 5

A capacitive level sensor (10) for measuring the level (H1, H2; H1', ​​H2') of a medium (16) in a container (14), comprising an electrode unit (12) comprising a strip-shaped measuring electrode (22), a strip-shaped counter electrode (24), and a strip-shaped shielding electrode (26, 28, 40), wherein the shielding electrode (26, 28, 40) at least partially surrounds the measuring electrode (22), and a signal processing arrangement (46), characterized in that a first AC voltage source (60) with a predetermined frequency and amplitude is provided, to which the shielding electrode (26, 28, 40) is connected, such that a shielding capacitor (54, 56) formed between the shielding electrode (26, 28, 40) and the measuring electrode (22) 58) has a shielding capacitance that is proportional to the length of the shielding electrode (26, 28, 40), that a second AC voltage source (66) of the same frequency and with a predetermined second amplitude is present,wherein the second amplitude is out of phase with the first amplitude to which the counter-electrode (24) is connected, such that a measuring capacitor (52) formed between the counter-electrode (24) and the measuring electrode (22) has a measuring capacitance that is proportional to the fill level (H1, H2; H1', ​​H2'), that the measuring capacitor (52) and the shielding capacitor (54, 56, 58) are connected to form a capacitive voltage divider, and that the divided measuring electrode voltage (72) applied to the measuring electrode (22) is used to determine the fill level (H1, H2; H1', ​​H2') in the signal processing arrangement (46).

The utility model discloses a generator stator cooling water dissolved hydrogen measurement water sample backwater device which comprises a middle water storage tank, the top of the middle water storage tank is communicated with a monitoring device through a water inlet pipeline, and the lower end of the middle water storage tank is communicated with a generator stator cooling water tank through a double-pump system; a low-liquid-level sensor, a high-liquid-level sensor and a high-liquid-level sensor are arranged on one side in the middle water storage tank and used for monitoring the liquid level of the middle water storage tank; the device relates to the technical field of measurement water sample recovery, and is simple in structure, easy in function and high in reliability, meanwhile, the measured water sample is directly recovered to a generator stator cooling water tank, the water quality of generator stator cooling water is not affected, leakage and leakage are avoided, water resources are saved, and the device is suitable for popularization and application. Meanwhile, safe operation of generator stator cooling water is guaranteed, and different generator stator cooling water tank forms on site are met.

Title: In-situ control device for a level sensor. The invention relates to an in-situ control device (1) for a level sensor (10), of the sonar or ultrasonic type, the device (1) comprising: - a mast (2) extending along a longitudinal direction (20); - a base (3) modifiable between a support configuration in which it supports the mast (2), and at least one storage configuration; - a distance sensor (4) mounted along the mast (2), and having a detection axis (40) extending parallel to the longitudinal direction (20) of the mast (2), towards one end of the mast (2), called the lower end (201); - a detection paddle (5) movably mounted on the mast (2) along the longitudinal direction (20), between the lower end (201) and the distance sensor (4). Figure for the abstract: Fig. 2

The invention relates to a machine (1) for manufacturing a concrete voussoir comprising at least one mold (20) having an upper opening for pouring fluid concrete, a filling hopper (10) placed above said upper opening for pouring a determined quantity of concrete, said hopper being provided with a lower pouring orifice and a movable shut-off cap (12) between at least a first closed position and a second open position, and means for vibrating the fluid concrete in the mold (20), characterized in that the hopper (10) comprises a means for measuring the presence of concrete by mass or volume and the machine (1) comprises a level sensor (30) measuring in real time the filling height of fluid concrete poured into the mold (20),said level sensor (30) being connected to the measuring means of the hopper (10) via an automatic control unit (40) to stop the discharge of fluid concrete by moving the hood (12) from the second open position to the first closed position once the fluid concrete poured into the mold (20) has reached a certain predetermined height. Figure for the abbreviation: Fig. 2,

The invention relates to a method for operating a stack arrangement (1), comprising at least one stack (2) and at least one media and / or cooling line (3) connected to the stack (2). According to the invention, a liquid that arises during operation of the stack arrangement (1) due to leakage and / or condensation is collected in a tray (4) arranged below the at least one stack (2) and the at least one media and / or cooling line (3) and is detected by means of at least one fill level sensor (5, 6). The invention further relates to a stack arrangement (1) which is suitable for carrying out the method according to the invention or can be operated according to the method.

This invention relates to a control method for an overflow wash water recovery system in a plastic electroplating chromium roughening wash tank. The method includes: (1) powering on the system; (2) detecting data from a first high / low level sensor; (3) detecting data from a third and second pressure gauge; (4) detecting data from the first pressure gauge; (5) detecting data from the second high / low level sensor; (6) detecting pressure data from the reverse osmosis unit; (7) operating the reverse osmosis recovery system; (8) detecting data from a fourth high / low level sensor; (9) operating the concentrate recovery system; (10) detecting data from the fourth high / low level sensor; and (11) storing the recycled water produced by the system in a recycled water collection tank.

This invention relates to the field of rock-breaking equipment technology and discloses a riverbed rock-breaking device, including a hull and a rock-breaking machine. The hull is equipped with lifting equipment. The rock-breaking machine includes a cutterhead, an mounting sleeve, and a support sleeve. The cutterhead is rotatably mounted on the bottom of the mounting sleeve, and the support sleeve is slidably fitted onto the mounting sleeve. The mounting sleeve contains a drive mechanism for rotating the cutterhead, and the support sleeve contains a hydraulic cylinder for moving the mounting sleeve up and down. The support sleeve also has a counterweight, and multiple sets of support components are mounted on its side wall. Each support component includes an elastic telescopic rod, a limiting drill rod, and a first motor for driving the limiting drill rod to rotate. A support plate for mounting the support components is formed on the outer side wall of the support sleeve, and a level sensor is mounted on the support plate. The elastic telescopic rod is fixedly mounted on the bottom of the support plate, and the limiting drill rod is rotatably mounted on the bottom of the support plate. This device can adapt to riverbeds of different depths and eliminates the need for splicing drill rods, making operation simpler and faster.

An explosive delivery system for dipping and loading a blasthole to determine water depth and explosive depth in blasthole. The explosive delivery system includes a vehicle with a first reservoir configured to store an explosive and a delivery apparatus reel mounted to the vehicle with a delivery apparatus stored on the delivery apparatus reel. The delivery apparatus having a central bore that extends a length of the delivery apparatus from a proximal end to a distal end of the delivery apparatus and an outlet disposed at the distal end. The explosive delivery apparatus is configured to deliver the explosive out of the outlet of the delivery apparatus. The delivery apparatus includes a plurality of level sensors disposed on an outer surface of the delivery apparatus and that are dispersed along the delivery apparatus. Each level sensor is configured to determine if it is disposed in water, air, or explosive.

The invention discloses an online continuous screening and adding system and device for circulating materials of a high-alkali coal fluidized bed boiler, and belongs to the technical field of material circulation and control of fluidized bed boilers. The system comprises a device structure, a detection module, a control module and an alarm module, the device structure is sequentially connected with a slag cooler, a chain bucket machine, a bucket elevator, a screening system, a circulating material bin, a pneumatic conveying device and a slag bin through a material conveying path, and the pneumatic conveying device is connected to bed material adding ports with different heights of a boiler through a plurality of branch pipes; the detection module comprises a bed temperature sensor, a material level sensor, a flow sensor and a screening efficiency detection unit; the control module is electrically connected with the detection module, the pneumatic conveying device and the screening system, and the alarm module is used for abnormal alarm. According to the high-alkali coal fluidized bed boiler, whole-process online continuous treatment of circulating materials is achieved, accurate control and self-adaptive adjustment can be achieved according to bed temperature distribution in the boiler and coal quality changes, and the operation stability, the combustion efficiency and the intelligent level of the high-alkali coal fluidized bed boiler are improved.

The systems and methods taught herein provide an eluent level sensor that enables real-time monitoring of the level of an eluent or waste liquid in a container placed on the eluent level sensor. The eluent level sensor alerts a user when the eluent level is below or above a selectable threshold suitable for a particular content of the container. For example, when the eluent level drops below a selectable threshold of a container containing a new eluent or eluent precursor, the eluent level sensor may issue an alarm to the user. In an eluent delivery system, as an alert is issued to the user before the container is emptied, the user is helped to save substantial analysis time and effort. By giving a notification (e.g., visual notification) of the eluent level to the user, the eluent level sensor may avoid damage to the instrument and improve user experience.

An overflow prevention control method for a dispenser, a dispenser, and a storage medium. The dispenser is arranged with an ingredient outlet and a water tank, and the water tank is arranged with a level sensor. The overflow prevention control method includes: detecting, via the level sensor, a first liquid level height of the water tank; and enabling a target filling mode and a target overflow protection according to the first liquid level height; where the target filling mode is at least one of an automatic filling mode or a manual filling mode, and the target overflow protection is at least one of an automatic filling overflow protection or a manual filling overflow protection.

The utility model discloses a material detection device and relates to the field of material loading and unloading. Comprising a supporting platform, a hopper, a material level sensor and a control system, the hopper is arranged on the supporting platform, a discharging opening is formed in the lower portion of the hopper, and a sensor supporting frame perpendicular to the discharging opening is arranged on the lower portion of the discharging opening; the number of the material level sensors is two, and the two material level sensors are arranged on the two sides of the sensor supporting frame respectively and electrically connected with the control system. The sensor supporting frame is perpendicular to the discharging opening, so that the material level sensor can detect the flowing direction of the materials, interference of material accumulation or uneven flowing on the detection result is reduced, and the monitoring precision is improved. Due to the fact that the material level sensors are installed on the two sides of the sensor supporting frame, the material impact position directly exposed under the discharging opening is avoided, the risk that materials fall down at a high speed or hard particles impact the sensors is reduced, the durability of the device is improved, and the service life of the sensors is prolonged.

This invention provides a highly adaptable bottom-reaching support for an underwater acoustic testing device, relating to the technical field of underwater acoustic testing devices. The highly adaptable bottom-reaching support includes an underwater acoustic testing device body. Multiple detection sensors are fixedly connected to the outer side of the underwater acoustic testing device body. Multiple level sensors for balance measurement are also fixedly connected to the outer side of the underwater acoustic testing device body. A mounting frame is fixedly connected to the bottom of the underwater acoustic testing device body. This highly adaptable bottom-reaching support allows a first rack to push a support block into depressions in the ground, thereby further maintaining stability. This ensures that the support for the underwater acoustic testing device body can adapt to different environments, and the level sensors can further assist in ensuring the overall stability of the device, adapting to various underwater environments.

In a method for controlling a pure water production system according to the present invention, when the water storage amount for a pure water tank 111 as measured by a level sensor 112 is increased from a reference value, a control means reduces the water supply amount of primary pure water W2 to the pure water tank 111 by narrowing a flow rate adjustment valve 113. On the basis of a measurement value from a second pressure gauge 115 in the stage preceding the flow rate adjustment valve 113, the output of a booster pump 109 is controlled so as to reduce the output of an inverter 110 so that the measurement value from the second pressure gauge 115 becomes almost constant at a predetermined pressure. Additionally, the output of an inverter 103 of a water feed pump 102 is controlled so as to be reduced so that the pressure in the stage preceding the booster pump 109 is also almost constant. This makes it possible to avoid the risk of cavitation in the booster pump 109, stably operate the booster pump 109, and supply the necessary amount of the primary pure water W2 to the pure water tank 111. According to such a method for controlling a pure water production system, it is possible, in a pure water production system having a booster pump between water treatment apparatuses, to control a water supply amount in accordance with the amount of water used.

The utility model belongs to the technical field of ash conveying equipment, and provides an incinerator fire grate slag conveying device with an automatic monitoring function, which comprises a pneumatic conveying assembly, a plurality of feeding assemblies, a plurality of connecting assemblies, a plurality of pneumatic ash discharging valves, a plurality of ash discharging hoppers and a plurality of material level sensors, the top of the conveying pipe is connected with a connecting piece; the feeding assembly is connected with the pneumatic cinder valve through the connecting assembly; according to the pneumatic cindervalve, the first sealing gasket in the first groove, the second sealing gasket in the second groove, the sealing ring in the limiting groove and the threaded connection structure are matched with one another, so that multiple sealing can be carried out on the pneumatic cindervalve, the feeding pipe and the lower ash hopper, and the pneumatic cindervalve, the feeding pipe and the lower ash hopper can be rapidly connected together in a high-sealing mode; and operation is convenient and fast, the assembling efficiency of the device is improved, and the ash leakage condition cannot occur in the ash conveying process.

The invention discloses an intelligent air pressure sample supply and double-cup uniform mixing device suitable for colloidal suspension, which comprises a standard liquid storage unit, a calibration reaction unit, an air pressure sample supply unit and an emptying cleaning unit, and a liquid supply tank, a calibration cup and a waste liquid collection barrel are all provided with liquid level sensors. The standard liquid storage unit comprises a liquid supply tank and a first stirring mechanism; the calibration reaction unit comprises a calibration cup, a second stirring mechanism and a four-way pipeline joint with a liquid inlet and a liquid outlet; the air compression sample supply unit comprises a clean air source air pump, an exhaust electromagnetic valve and a sample supply pipeline with a one-way valve; the emptying and cleaning unit comprises an emptying pipeline, a waste liquid collecting barrel, a cleaning electromagnetic valve, a cleaning peristaltic pump and a cleaning pipeline. Double-cup stirring is adopted, sedimentation layering and concentration gradient are avoided, the liquid supply tank and the calibration cup respectively adopt a magnetic coupling turbine and a magnetic stirring mechanism to realize low-energy-consumption uniform mixing, multiple functions are integrated, the pain point in the prior art is solved, and the sample supply requirements in multiple fields are met.

The utility model provides an oil mass detection circuit and oil mass detection equipment. The oil mass detection circuit comprises an oil tank voltage division circuit and a first power supply circuit, the oil tank voltage division circuit comprises a first resistor, a sixth resistor and an eighth resistor, one end of the first resistor is a voltage acquisition end of the oil tank voltage division circuit and is connected with a level detector in the oil tank; the other end of the first resistor is a voltage output end of the oil tank voltage division circuit; the other end of the first resistor is also connected with one end of the eighth resistor; the other end of the eighth resistor is connected with the power supply output end of the first power supply circuit; the other end of the eighth resistor is also connected with one end of a sixth resistor; the other end of the sixth resistor is a voltage reference end of the oil tank voltage division circuit; according to the scheme, the voltage change caused by the resistance change brought by the level sensor can be accurately obtained only by matching the plurality of resistors and the triodes with the level detector in the oil tank, so that the accurate measurement of the oil quantity in the oil tank is realized.

The invention discloses a self-adaptive elastic tube double-oscillation water column wave energy conversion device, which belongs to the technical field of ocean energy utilization and comprises an elastic tube, hard tubes at two ends and an in-tube oscillation water column, and an adjusting assembly in the hard tubes is electrically connected with a free end turbine device and a controller. The adjusting assembly comprises internal and external liquid level sensors, a bidirectional water pump and adjusting blades capable of surrounding air adjusting holes. The device combines a double-oscillation water column with the elastic pipe, improves the natural oscillation period, is easy to resonate with waves, converts wave energy at two ends, absorbs energy along the full length of the elastic pipe, and improves the energy capturing efficiency and the space range; the system oscillation period can be adjusted by adjusting the pore diameter of the air hole, and the efficient frequency bandwidth is widened; different wave frequencies are matched, and the power generation efficiency of the device is improved. The flexible structure of the elastic tube improves the survivability under extreme wave conditions; the two-way water pump can adjust internal water pressure according to wave water level and wave height to adapt to tide level change and enhance protection, the water surface of an oscillating water column in the pipe is stable, and the overall stability is high.

The utility model discloses a double-layer multichannel mud tank which comprises a tank body part, matched equipment and matched pipelines, the tank body part structurally comprises a long-strip-shaped tank base arranged in the longitudinal direction, a plurality of saddles are sequentially and fixedly installed on the upper surface of the tank base at intervals in the longitudinal direction, and an arc tank bottom is jointly supported in the saddles. Wallboards are connected to the upper portions of the two longitudinal sides of the arc tank bottom, a plurality of square pipes are fixed to the arc tank bottom and the wallboards at intervals in the longitudinal direction, the wallboards and the square pipes on the two sides jointly support and are connected with a lower-layer tank face upwards, and the lower-layer tank face is connected with an upper-layer tank face upwards in a supporting mode. The corollary equipment comprises at least two groups of stirrers which are arranged on the lower-layer tank surface, and a mud gun, a valve wrench of a sea valve and a radar liquid level sensor which are also arranged on the lower-layer tank surface. The utility model belongs to the technical field of petroleum drilling and production equipment, and solves the problems that a mud tank of a solid control system in the prior art is unreasonable in bottom structure, easy to settle sand and inconvenient to clean subsequently.

The invention relates to the technical field of water pollution detection, in particular to a water heavy metal detection device for irrigation water supervision, which comprises a buoy, the lower end of the buoy is gradually shrunk into a conical part, a circular partition plate is arranged in the buoy and divides a cavity in the buoy into a detection cavity and a water return cavity, and a water inlet pipe is arranged at the bottom of the conical part. A plurality of water outlets are formed in the circular partition plate, a liquid level sensor, a water quality detection piece and a control valve are arranged in the detection cavity, the control valve comprises a water drainage valve and a water inlet valve, a first water pumping pipe is arranged at the top of the floating barrel, and a second water pumping pipe communicated with the water return cavity is arranged beside the floating barrel. The water is directly pumped out of the detection cavity through the first water pumping pipe and conveyed to the farmland, an intermediate transfer link is omitted, secondary pollution of the water and waste of water resources are avoided, the water exceeding the standard is drained into the water return cavity through the drainage valve and then pumped back to the original water area through the second water pumping pipe, isolated backflow of the substandard water is achieved, and the substandard water is prevented from polluting soil or other water.

The invention relates to an arrangement and methods to control volume of fluids in a well system having a riser (7) extending from a well to a rig. The riser (7) has an increased diameter section (1) situated below the upper end of the riser (7) and above any slip joint (12) in the riser. The arrangement further comprises a sensor (5) to continuously measure the position of the slip joint (12). the increased diameter section (1) is coupled to an outlet (19) that is in fluid communication with a fluid return system (18), and the arrangement further comprises a return pump (2) coupled between the outlet (19) and the mud return system (18). The outlet (19) is arranged at a lower level than the mud return system (18). Level sensors (22) measure the level of liquid within the increased diameter section (1).

The utility model belongs to the technical field of coal bunker coal level monitoring, and discloses a sensor for detecting the height of a coal bunker, which comprises a base and a mining intrinsic safety type radar level sensor for monitoring the height of coal stored in the coal bunker, the mining intrinsic safety type radar material level sensor is installed on the rotating assembly, the lifting assembly is installed on the rotating assembly, and the mining intrinsic safety type radar material level sensor is fixedly installed at the lifting end of the lifting assembly. Maintenance personnel can conveniently and directly overhaul and replace on the ground, and operation is convenient.

Method for filling a work vehicle with fluid. The method includes activating a filling mode and selecting a fluid to be filled on a display, detecting a fluid level, comparing the fluid level with a target level, initiating a level warning when the fluid level approaches the target level, and deactivating the filling mode when the fluid level is substantially equal to the target fluid level.