15results about "Specific gravity by measuring pressure differences" patented technology

The utility model provides a kind of SF6 gas relay density monitoring device, it is related to SF6 gas density monitoring technical field.The device includes shell, gas flow channel and control unit.Gas flow channel is through shell, and its inner wall is equipped with the mounting pedestal that is protruded to center.Fixed with sensor module on mounting pedestal, the module includes temperature sensor and pressure sensor, and module surface is covered with high heat-conducting silicone grease layer, to improve heat conduction efficiency.The air current direction of sensor module is equipped with spoiler, it is inclined arc sheet, can optimize air current state.Control unit is electrically connected with sensor module, for receiving and processing the signal from temperature sensor and pressure sensor, the device solves the technical problem that SF6 gas relay density monitoring device is insufficient in real-time and accuracy due to temperature compensation, and the real-time of temperature compensation and measurement accuracy are significantly improved.

This invention provides a remote-reading sulfur hexafluoride density meter, belonging to the field of electrical instrumentation technology. Its structure includes: a gear rotatably connected to the dial, with the gear teeth engaging with each other; a first fixing post fixedly connected to the dial, with a fixing hole on the first fixing post; a helical bimetallic strip, fitted around the gear's rotating shaft, with its inner end connected to the shaft. This invention adds a helical bimetallic strip to the gear mechanism and fixes its outer end. Based on this structure, when the bimetallic strip responds to temperature changes, the rotational movement of its inner end can compensate for under-reading caused by excessively high ambient temperatures and offset over-reading caused by excessively low ambient temperatures, thereby improving detection accuracy within a certain range. Furthermore, this invention adds a protective plate to the rear of the instrument for the response element, improving assembly reliability and providing protection.

The application provides a method for detecting the depth of a conduit in concrete, which comprises the following steps: obtaining the medium density of the space between a first pressure sensor and a second pressure sensor on the conduit, and determining the first space position type of the space between the first pressure sensor and the second pressure sensor on the conduit; obtaining the first medium type corresponding to the position of a first vibration sensor and the second medium type corresponding to the position of a second vibration sensor, and determining the second space position type of the space between the first vibration sensor and the second vibration sensor on the conduit; if the first space position type and the second space position type are consistent, determining the first depth information based on the medium density, determining the second depth information based on the vibration signal, and determining the target depth information according to the first depth information and the second depth information. Through the method, the detection reliability can be improved by avoiding the single signal misjudgment, and the depth detection precision is improved by comprehensively calculating the target depth.

The present application relates to the technical field of density sensor, particularly relates to an overflow type density sensor, which comprises a measuring tube, the upper end of the measuring tube is fixedly installed with an overflow weir for liquid overflow, the side of the measuring tube is provided with a fixed density detector near the lower position, and the outer side of the measuring tube is provided with a mounting cap wrapping the overflow weir near the upper position. The second locking screw column is screwed, so that the measuring tube and the rotating ball are rigidly locked, the posture is fixed, the leveling process ensures that the constant measuring liquid level surface physically locked by the overflow weir is in a horizontal state, and then the vertical height difference between the two pressure taking points of the density detector is kept at a design value. The design converts the complex field installation reference calibration problem into a simple mechanical leveling and locking operation, so that the instrument can obtain the measuring reference accuracy on various complex pipeline layouts, and effectively solves the systematic measurement error caused by the installation inclination of the traditional sensor.

Devices, methods, and systems for monitoring an aerosol density level in a self-testing fire sensing device are described herein. One device includes an adjustable particle generator configured to generate aerosol, an optical scatter chamber configured to measure an aerosol density level of the aerosol, and a controller configured to compare the measured aerosol density level with a threshold aerosol density level and stop the adjustable particle generator from generating the aerosol responsive to the measured aerosol density level reaching and remaining at or above the threshold aerosol density level for a particular period of time.

The application provides a GIS online micro-water density monitoring system, and belongs to the technical field of micro-water density detection.The system comprises a processing cylinder, a monitoring host, GIS equipment and a transmitter main body; the GIS equipment is communicated with the inner cavity of the processing cylinder through a gas inlet pipe and a gas outlet pipe; the system further comprises a uniform flow dehumidification assembly arranged in the processing cylinder, a cleaning assembly arranged on the top of the uniform flow dehumidification assembly and a vibration assembly arranged on the uniform flow dehumidification assembly; the gas flow is compressed, accelerated and cooled through a gas collecting cover; the gas flow is further cooled and uniformly mixed by a spiral blade, so that the detection precision is improved; water droplets are removed by gravity and their sliding paths are constrained; a wiping mechanism is driven to rotate and lift by a fan blade power, so that online cleaning of the sensor and self-cleaning of the wiping block are realized; meanwhile, the axial movement of a sliding rod is driven by a cam groove and a roller, so that the spiral blade is excited to vibrate at a high frequency to remove condensed water droplets; and the accuracy and long-term stability of micro-water density monitoring are improved, and the operation and maintenance cost is reduced.

Differential density system and method. A differential pressure transmitter measures a pressure difference between first and second pressure sensing locations. A reference vessel in fluid communication with the first pressure sensing location contains a reference fluid and a sample vessel in fluid communication with the second pressure sensing location contains a sample fluid. The reference fluid is in a first column above the first pressure sensing location and the sample fluid is in a second column above the second pressure sensing location. The second column is of substantially equal height as the first column. A value of total dissolved solids (TDS) in the sample fluid is determined based on the pressure difference.

An automated batch sampling drilling mud management system (1) includes a a portable mud measurement system (10) and a communications system (120). The portable mud measurement system (10) has one or more measurement devices (14) arranged to measure at least one property and / or characteristic of drilling mud; and a pumping system (16) arranged to pump a batch sample of drilling mud from a supply of drilling mud to the one or more measurement devices. The pumping system (16) is also able to subsequently flush the batch sample of drilling mud from the one or more measurement devices (14). The communications system (120) enables bidirectional communications between the mud management system (10) and a remote location to enable transfer of data therebetween and the exertion of control from the remote location to the mud management system (10).

This invention relates to the field of mechanical automation assembly and coking equipment technology, specifically to a coal charging hole cover assembly device and method for use in sealed coke oven environments. It includes an annular rotary base and indexing turntable, a traveling pallet equipped with positioning columns and pneumatic self-centering claws, multiple workstations, and an industrial control computer. The device utilizes the indexing turntable to drive the clamped coal charging hole cover blank, which sequentially flows between workstations such as tamping and filling, welding, feeding and grinding, and bell jar testing. Its core is to achieve continuous flow of the workpiece based on a single reference point using the traveling pallet, and to utilize a positive pressure dustproof air curtain to blow away scattered refractory dust. This invention abandons the traditional multiple lifting method, overcomes the secondary clamping errors caused by realignment in harsh environments, ensures the cleanliness of the clamping surface, and improves the dimensional and positional accuracy of the workpiece throughout the assembly process.

This invention relates to the field of measurement technology, specifically providing a true density testing device to address the problem that true density meters cannot directly achieve automated detection of the true density of samples. To this end, this application provides a true density testing device, including a housing with an internal receiving space. Within the receiving space are a sample chamber, a sample stage assembly, a lifting mechanism, and a weighing mechanism, both connected to the housing. The sample stage assembly includes a sample tube and a base. The sample tube is used to hold the sample and can be placed on the base. The lifting mechanism drives the sample tube and base to move up and down, allowing the sample tube to mate with and seal the measurement interface of the sample chamber. The weighing mechanism is located below the sample stage assembly and can contact the sample stage assembly to detect the mass of the sample in the sample tube. This configuration enables the detection of the true volume and mass of the loaded sample, thereby achieving integrated automated measurement of true density.

This invention belongs to the field of pile foundation construction technology, specifically a real-time intelligent detection method for three parameters of pile foundation construction mud. The method includes the following steps: Step 1, installing an online detection mechanism on the mud circulation pipeline; the online detection mechanism in Step 1 includes a connecting pipe, the surface of which is fixedly connected to a sampling pipe. This real-time intelligent detection method for three parameters of pile foundation construction mud, by setting up an online detection mechanism and periodically calibrating the dynamic monitoring loop online through a static high-precision loop, fundamentally solves the problems of long-term drift and interference from operating conditions of online sensors, ensuring long-term accuracy and reliability of data. Combined with software compensation algorithms for flow velocity and temperature, it effectively isolates the impact of drastic fluctuations in the main pipeline flow on the measurement; the static detection loop completely eliminates interference from dynamic factors, thus solving the problems of poor real-time performance and low efficiency of existing manual detection methods.

Provided are a high-precision handheld SF6 gas density detection device (10), and a detection method. The high-precision handheld SF6 gas density detection device (10) comprises a gas path connector (20), a measurement mechanism (30) and a handheld mechanism (40); the gas path connector (20) is used for connecting to an SF6 gas chamber of an electrical device under test, and one end of the gas path connector (20) is provided with a plurality of different types of adapters; the measurement mechanism (30) is used for acquiring temperature information and pressure information of the SF6 gas chamber, and the measurement mechanism (30) is electrically connected to the handheld mechanism (40) so as to transmit the temperature information and pressure information of the SF6 gas chamber to the handheld mechanism (40); the measurement mechanism (30) comprises a first temperature sensor (301) and a pressure sensor (302), the first temperature sensor (301) and the pressure sensor (302) being electrically connected to the handheld mechanism (40); the handheld mechanism (40) is used for storing the temperature information and pressure information acquired by the measurement mechanism (30), and, according to the temperature information and the pressure information, calculating a corresponding density, so as to determine whether a leakage has occurred in the SF6 gas chamber; the handheld mechanism (40) comprises a reinforced housing (401), a controller (402), a memory (403), a timer (404) and a power supply.

This invention provides a marine solution concentration measurement system, comprising: a storage container for storing a solution; a differential pressure detection device disposed on the storage container; the differential pressure detection device includes a first pressure probe and a second pressure probe, both disposed within the storage container, with the first pressure probe located directly above the second pressure probe; a pitch sensor for detecting the pitch angle α of the storage container; a roll sensor for detecting the roll angle β of the storage container; and a data processing module electrically connected to the differential pressure detection device, the pitch sensor, and the roll sensor. This invention also provides a ship.

The utility model discloses a desulfurization absorption tower non -contact density measuring device, including absorption tower, densimeter measuring bucket, differential pressure transmitter and defoaming tank, absorption tower is connected with densimeter measuring bucket through sampling pipeline, differential pressure transmitter has positive pressure side and negative pressure side, positive pressure side and negative pressure side are connected with densimeter measuring bucket through pipeline, densimeter measuring bucket has positive pressure side sampling port and negative pressure side sampling port, and the interval distance h is established between positive pressure side sampling port and negative pressure side sampling port, the defoaming tank is located densimeter measuring bucket top, differential pressure transmitter is connected with DCS system, the utility model not only can accurately measure absorption tower densimeter accurately, realizes periodic sampling measurement, flushing and backwashing function simultaneously, and effectively reduces the economic cost of later spare wear replacement, equipment regular maintenance.