38 results about "Specific gravity measurement" patented technology

The invention discloses a power distribution network grounding fault protection method based on fuzzy measurement fusion criteria. The method comprises the following steps: acquiring a plurality of fault characteristic quantities of a protected feeder line to form a historical sample, and acquiring a sample to be tested according to the same method; clustering and dividing n historical samples into a fault class and a non-fault class by adopting a clustering algorithm; respectively taking membership degree, distance specific gravity measurement and angle specific gravity measurement as similarity measurement criteria, calculating a fault measurement value and a non-fault measurement value of the sample to be tested, and constructing a fuzzy measurement fusion criterion matrix of the sampleto be tested; and taking the fuzzy measurement fusion criterion matrix as a judgment set of a judgment index system, constructing a factor set of the judgment index system by using all similarity metric criteria, presetting the weight coefficient of each element in the factor set, and judging the fuzzy measurement fusion criterion matrix to obtain whether the distribution network to be tested isin fault or not. According to the method, the fault judgment interval is broadened, erroneous judgment caused by factors such as power system oscillation is effectively avoided, and the robustness isimproved.

The invention relates to a method for measuring ore grade, in particular to a method for measuring ore grade by a hydrometer method. The method comprises the following steps: sampling and specific gravity measurement: putting each sample ore into a cage, weighing weight G of each sample ore in the air and weight G' of each sample ore in the water with a weighing machine one by one, inputting the weight data into a spreadsheet document set by a computer, working out specific gravity gamma of each sample ore, checking a specific gravity-ore grade curve by utilizing the worked out ore specific gravity so as to obtain the grade of the sample ore, working out grade mean value of the ore sample by the weighting method, comparing the average ore grade with the planned ore grade, finally making judgments on ore grade to indicate whether the sample ore is qualified product or not. The method of the invention has simple operation, environment friendliness, energy conservation, less consumption of materials and devices, safe, fast and accurate measurement of ore grade.

Provided is a specific gravity monitoring control device capable of measuring and monitoring the specific gravity of fuel oil actually used when water emulsion fuel is produced by adding water to the fuel oil, and capable of producing the water emulsion fuel with an accurate target additional water weight ratio by adjusting the amount of the water to be added to the fuel oil using the specific gravity of the fuel oil obtained by the measurement. The specific gravity monitoring control device has a configuration in which when fuel oil is emulsified by adding water to the fuel oil, water emulsion fuel with a desired accurate target additional water weight ratio (T) can be produced by measuring the specific gravity of the fuel oil by a first specific gravity measuring unit (21), making a calculation using a first measured specific gravity (go) obtained by the measurement by the first specific gravity measuring unit (21), and adjusting the amount of the water to be added to the fuel oil on the basis of the result of the calculation.

The invention provides a preparation method of ceramic balls implanted with a quantum technology function. The method comprises the steps as follows: S1, material selection: different types of commonor functional ceramic ball products are selected; S2, component analysis; S3, specific gravity measurement; S4, classification: quantitative classification is performed according to the component proportion and specific gravity measured in the steps, and the indexes are used as quantum technology frequency modulation implantation indexes; S5, quantitative analytic statistics; S6, quantum implantation; S7, sorting and packaging: products treated in S6 are weighed and sorted, packaging is performed according to the quantitation of packaging bags, and the products are obtained. The method has thebenefits as follows: the preparation process is very simple, safe and practical, has wider application ranges and good safety, causes no pollution and meets the environmental protection requirement.

The invention relates to a drainage apparatus for leakage of cerebrospinal fluid after spinal operation and a positive-negative-pressure drainage switching determining method. The drainage apparatus comprises a liquid storage bag and a drainage pipe, wherein one end of the drainage pipe is inserted into an inlet of the liquid storage bag, the other end is inserted into a cerebrospinal fluid accumulated position, the bottom of the liquid storage bag is connected with a liquid discharging pipe, the liquid discharging pipe is provided with a discharging control valve, and the drainage apparatus is characterized by also comprising a gravimeter and a specific gravity box for accommodating the accumulated fluid for measuring the specific gravity, the gravimeter is arranged inside the specific gravity box, the drainage pipe enters the liquid storage bag and is communicated with the inlet of the specific gravity box, and the top of the specific gravity box is provided with an opening and is communicated with an inner cavity of the liquid storage bag; and the drainage pipe is serially connected with a negative-pressure drainage ball. The drainage apparatus has the beneficial effects that while the drainage is realized, the cerebrospinal fluid can be primarily tested. By matching the switching determining method, the situation of the cerebrospinal fluid can be dynamically observed, the operation of nursing personnel is facilitated, and collection and detection procedures are simplified.

A flow rate sensor system (200) is provided. The flow rate sensor system (200) includes a density or specific gravity meter (202) including a sensor assembly (204a) and a density or specific gravity meter electronics (204b) configured to generate a density or specific gravity measurement of a process fluid. The flow rate sensor system (200) further includes a mass flow meter (203) including a sensor assembly (205a) and a mass flow meter electronics (205b) configured to generate a mass flow rate of the process fluid and in electrical communication with the density or specific gravity meter electronics (204b). A remote processing system (207) is provided that is in electrical communication with only one of the density or specific gravity meter electronics (204b) or the mass flow meter electronics (205b). The remote processing system (207) is configured to receive a volume or energy flow measurement of the process fluid generated by the density or specific gravity meter electronics (204b) or the volumetric meter electronics (205b) based on the generated density or specific gravity measurement and the generated mass flow rate.

The invention discloses a method for detecting the influence degree of the hydrogen content of molten aluminum. The method comprises the following steps: a, the value of specific gravity of a sample is detected; b, a section is machined on the sample, whether a pinhole point exists on the section is observed, if the pinhole point does not exist, the hydrogen content of the sample is qualified, and the hydrogen content is unqualified if the pinhole point exists. According to the method, the section is machined on the sample after detection of the specific gravity, hydrogen is uniformly distributed through negative pressure pumping before the detection of the specific gravity, so that the distribution condition of pores formed by hydrogen after solidification of the sample can be observed directly through the section, a specific gravity parameter obtained with a specific gravity measurement method is further confirmed, the detection reliability of the hydrogen content is improved, and the potential safety hazards for hub quality control are reduced; dye penetrant inspection and/or polishing are performed on the section, the section observing reliability is further improved, and the reliability of the detection of the influence degree of the hydrogen content is guaranteed.

A specific gravity measuring apparatus includes a liquid bath, a measured object receiving member which is housed in the liquid bath via a support means in a non-contact manner and into and out of which a liquid within the liquid bath can freely flow, an aerial mounting member which is supported by the support means and on which a measured object is placed in order to measure gravity thereof in the air, and a weighing apparatus receiving and supporting the measured object receiving member via the support means. The weighing apparatus 5 is provided with a sensor and a measuring section. The aerial mounting member is provided in such a manner as to cover a part of an opening O at an upper part of the liquid bath.

The invention discloses an automatic sampling bucket for pile bottom mud, in particular to an automatic sampling bucket for pile bottom mud with simple operation, convenient sampling and high speed. The technical problem to be solved is that the mud at the top of the hole is used for the measurement of the specific gravity of the cast-in-place pile mud, which cannot fully represent the mud at the bottom of the hole. The invention includes a barrel, a lead wire and a bottom sealer. The lead wire is arranged above the barrel body, and the bottom plate of the barrel body Bottom holes are provided, and the bottom sealer includes a bottom cover plate and a stop bar arranged at the bottom of the back cover plate, the back cover plate is arranged in the barrel body, and the stop bar passes through the bottom hole of the barrel and is movably connected with the bottom plate. The present invention after adopting such a technical solution has a simple structure, does not need to measure the height, is convenient to use, and uses corner scraps for processing, thereby saving costs.

The invention relates to a portable specific gravity instrument based on air pressure measurement and a specific gravity measurement method. The portable specific gravity instrument comprises a firstsealed space, a second sealed space, a temperature sensor, a pressure sensor and a controller, wherein the first sealed space is used for placing a measured object, and the first sealed space is internally provided with a gravity sensor and an air release valve; the connection between the second sealed space and the first sealed space is controlled by an electromagnetic valve, and the second sealed space is internally provided with an air pump so as to inflate the second sealed space; the temperature sensor is arranged in the second sealed space and used for measuring the temperature before and after the pressure intensity changes; the pressure sensor is arranged in the second sealed space and used for measuring the pressure intensity; and the controller is used for controlling the measurement time sequence, receiving the temperature, pressure intensity and gravity data and processing the data. The portable specific gravity instrument completes the accurate measurement of the density of solid and liquid substances to the greatest extent through measuring the pressure intensity change in the same sealed container and calculating the relevant formula, and completes the energy-saving,environment-friendly and non-loss efficient measurement.

The invention discloses an electronic mud specific gravity measuring device and a measuring probe. The invention provides the device for measuring the specific gravity of the slurry by using the resistance strain gauges and related parts, when the device is immersed in the slurry to be measured, the device can output different electric signals, so that the specific gravity of the slurry can be measured through the change of the electric signals, and the device is not influenced by the depth of the device immersed in the slurry or the change of the specific gravity of the slurry. Therefore, during drilling cast-in-place pile hole forming and underground diaphragm wall grooving operation, the device is hung in a pile hole or an underground diaphragm wall groove section, the specific gravity of wall protection slurry at any depth and any position in the pile hole or the underground diaphragm wall groove section can be directly measured, operation is easy, convenient and rapid, sampling is not needed, and the device is convenient to operate and high in practicability. Therefore, rapid and accurate construction parameters can be provided for related construction processes.

The invention discloses a specific gravity measuring bench and an operation method thereof. The specific gravity measuring bench comprises an upper bench body and a lower bench body. The upper bench body is provided with a circle of small fixed bottleneck port and three fixing sleeves. A shaking rod is arranged at the opposite side of one of the three fixing sleeves on the upper bench body. The lower bench body is provided with a circle of big fixed bottom port. The lower bench body is also equipped with three fixing solid pipes, the positions of which are corresponding to positions of the three fixing sleeves on the upper bench body. Three supporting legs are arranged below the lower bench body. The specific gravity measuring bench has a simple structure, is easy to operate, is low-cost, and is fast, easy and safe. One-time measurement quantity can be adjusted according to actual situation, and the measurement efficiency is high. Testing speed of the specific gravity measuring bench is 5-10 times faster than testing speed of traditional testing. The specific gravity measuring bench is fast, large in quantity, easy and safe.

The invention discloses liquid specific gravity measuring equipment which comprises a base capable of being provided with various mechanisms, as shown in figure 1. A transmission mechanism used for transmitting power is arranged on the upper side of a machine body, the transmission mechanism is provided with a main wheel and an auxiliary wheel, and a conversion mechanism for changing weight into displacement is arranged on the lower side of the machine body. A transfer rod, a hollow column and a liquid suction pipe are arranged in the conversion mechanism, errors existing in measurement are reduced, manual calculation is not needed, the specific gravity of liquid is directly displayed on a display screen, efficiency is improved, the position of a balancing weight on a power belt is adjusted to control the level of equipment to be normally used, the measurement error is further reduced, and the accuracy is greatly improved.

The invention relates to the technical field of automatic specific gravity measurement, and provides a numerical-control automatic specific gravity measurement device capable of accurately measuring volume and specific gravity of irregular polyhedrons. The numerical-control automatic specific gravity measurement device is characterized in that a weight sensor 7 is mounted on a container 1 and connected with a computer, the container 1 is filled with a right amount of liquid, and a piston 3 is inserted into the container 1; a step used for limiting maximum stroke of the piston is processed on the inner side of the top of the piston 3 or the bottom of the container 1; an axial through hole is formed in the piston 3, a measuring rod 4 is mounted in the through hole, and an electrode is mounted at one end of the measuring rod and connected with the computer; the other end of the measuring rod is processed with an internal thread and is in threaded connection with a screw 6 on a shaft of a stepping motor 5, the stepping motor 5 is mounted on the piston 3 through a support 8, and the stepping motor is connected with a motor controller which is connected with the computer. The numerical-control automatic specific gravity measurement device has the advantages that the device can compute specific gravity of a measured object through measured size and weight; and the specific gravity can be acquired at one step.

The invention discloses thiodicarb producing equipment. The thiodicarb producing equipment comprises a sulfur dichloride reactor, a thiodicarb synthesis reactor, a specific gravity measurement container and a metering container, wherein a first outlet of the sulfur dichloride reactor is communicated with an inlet of the metering container; a second outlet of the sulfur dichloride reactor is communicated with an inlet of the specific gravity measurement container; a first outlet of the specific gravity measurement container is communicated with an inlet of the sulfur dichloride reactor througha pump; a second outlet of the specific gravity measurement container is communicated with the inlet of the metering container; an outlet of the metering container is communicated with an inlet of thethiodicarb synthesis reactor. According to the thiodicarb producing equipment disclosed by the invention, pungent smell is effectively reduced.

A specific gravity measuring tool comprises a portable handheld housing supporting a plurality of electrodes at a fixed known spacing thereon and a display for displaying a determined specific gravity thereon. The electrodes are arranged to be penetrated into the object to be measured, for example a potato. The electrodes include a first pair across which an electrical potential is arranged to be generated, and a second pair across which an electrical potential is arranged to be sensed. A processor of the tool is arranged to calculate electrical impedance using the electrical potential generated across said first pair of the electrodes, the electrical potential sensed at said second pair of electrodes, and the known spacing between the electrodes so that the specific gravity can be determined using a predetermined relationship between electrical impedance and specific gravity.

The invention discloses a liquid specific gravity measuring device. The liquid specific gravity measuring device comprises a measuring platform fixed to a side wall of a container, wherein the measuring platform is provided with a first through hole and a second through hole; a first measuring rod and a second measuring rod which are the same in length and cross section extend into liquid under measurement from top to bottom through the first through hole and the second through hole respectively and freely suspend in the liquid under measurement; a first displacement sensor and a second displacement sensor which are used for detecting vertical movement are arranged beside the first through hole and the second through hole respectively; the weight of the first measuring rod is 1.5-3 times that of the second measuring rod; the first displacement sensor and the second displacement sensor are in signal connection with a PLC (Programmable Logic Controller) control module; and the PLC control module comprises a data acquisition unit, a central processing unit, a storage unit, a power supply unit and a display input unit. Through the adoption of the liquid specific gravity measuring device, the liquid specific gravity can be accurately measured in real time, and the working efficiency is greatly improved.