37results about How to "Expand the scope of measurement" patented technology

The invention, which belongs to the technical field of optical machine assembling adjustment, discloses a device and method for centering mounting adjustment of a large-calibre aspheric-surface reflector. The method is characterized in that a to-be-adjusted aspheric-surface reflector is fixed at a rotary adjusting mechanism of a centering device; deviation between an optical axis of the aspheric-surface reflector and a reference axis is measured in real time by using an eccentricity measuring system in the device and the position and direction of the deviation are displayed at a display device; and the position attitude of the aspheric-surface reflector is adjusted, so that the overlapping error between the reflector optical axis and the reference axis is smaller than a designed allowance value and thus centering assembling adjustment of the aspheric-surface reflector is completed. With the device and method, a centering problem of a large-calibre rotary symmetric aspheric-surface reflector can be solved. The device and method have characteristics of simple instrument erecting, great convenience in operation, and high centering precision and the like.

The invention belongs to the technical field of fluid measurement, and relates to multi-phase flow measuring methods based on a single-section impedance long-waist internal cone sensor. The adopted sensor comprises a cone throttling piece, a systolic pressure drop differential pressure transmitter, a permanent pressure loss differential transmitter and an electrical sensitive sensor. According tothe difference of properties of continuous phases, the invention provides two measuring methods which have the same inventive concept and respectively comprise the following steps of: collecting two pairs of differential signals generated by the cone throttling piece; collecting electrical signals by utilizing the electrical sensitive sensor; calculating the total mass flow rate, the mass flow rate of each phase and the mass content of each phase according to a double-differential model of a single throttling piece; selecting a corresponding electrical method according to whether the continuous phases are conductive, and calculating the section content of each phase; and selecting a corresponding calculating model, and calculating the procedure parameters of an oil phase, a gas phase and an aqueous phase. The multi-phase flow measuring method is characterized by high measuring precision, high reliability, capability of obtaining more measurement information, low cost and the like, andcan be widely applied in the industries of petroleum, chemical engineering, energy power, metallurgy and the like.

The invention belongs to the technical field of flow measurement, relating to a single-cross section impedance type long-waist inner cone sensor which comprises a cone throttling element, a systolic pressure drop differential pressure transmitter, a permanent pressure loss differential pressure transmitter and an electrical sensitivity sensor; as the long-waist inner cone throttling element, the cone throttling element is composed of a front-section cone, a middle-section cylinder as the waist of the cone and a back-section cone, is coaxially fixed at the center of a pipeline by a support and forms an annular circulating space with the pipe wall of the pipeline; the electrical sensitivity sensor comprises a group of electrodes which are distributed in the annular circulating space and are positioned at the same cross section of the pipeline; the group of electrodes are composed of an inner electrode and an outer electrode; the inner electrode is the cone throttling element or is fixed on the surface of the waist of the cone; and the outer electrode is fixed on the inner wall of the pipeline. The invention simultaneously provides a single-cross section impedance type long-waist inner cone multiphase flow measuring device adopting the sensor. The sensor and the measuring device have the characteristics of high precision, high reliability, low cost and the like.

The invention discloses a gaugeable star-shaped valve which comprises a discharge valve shell, a feed pipe positioned at the upper part of the shell, a discharge pipe positioned at the lower part of the shell, an impeller positioned in the shell and a rotary shaft used for driving the impeller; at least three blades are arranged on the impeller; the blades separate the impeller into boxes with equal size and same quantity with the blades; the size of an opening of each box is equal to or larger than that of an inlet of the discharge pipe; permanent magnets which are uniformly distributed along the periphery of the rotary shaft has the same quantity with the blades and corresponds to the positions of the blades; and reed pipes matching with the permanent magnet are arranged at the side of the rotary shaft. The gaugeable star-shaped valve provided by the invention controls a stepping motor through a controller and counts through the reed pipes to figure out volume or weight of a material passing through the star-shaped valve. According to the gaugeable star-shaped valve, each box has equal size, so that measurement to a box can be realized precisely; the boxes can be increased or decreased, or the size of the boxes can be adjusted as required so as to realize different flows and measurement units; and therefore, the gaugeable star-shaped valve has stronger adaptability.

The invention discloses a power detection alarm device with an automatic take-up function, which comprises a protection box and a rectangular groove. The operating process of the power detection alarmdevice is that: an electric motor is directly started up; by rotation of a driving wheel, a belt and a driven wheel, two storage rollers are driven to continuously rotate; two groups of third wires are continuously lengthened; when the lengthened length meets the requirement, the electric motor is shut down; the third wires are pulled out of the inside of a passage; a wire or an electronic component which needs to be measured is fixed by a connection plug or an electrical connection wire clamp; in the electrical connection process, an illumination lamp is turned on; after electrical connection is completed, a multimeter can automatically identify electric power safety so as to facilitate detection of people; and for the protection box, a mounting spring can be squeezed by squeezing two T-shaped clamping rods symmetrically arranged so as to facilitate removing the integral protection box and facilitate internal installation of the integral detection device. According to the invention,the protection box reinforces collision resistance and waterproofness of the integral detection device; and the power detection alarm device is applicable to detection on various lines and electric equipment, is simple and convenient to operate and is convenient for an operator to use, so that working efficiency is improved.

The invention discloses a gas autoweighing device and gas autoweighing method. The device is composed of a shell, an operation panel, glass barrels, pressure sensors, upper lead limit switches, lower lead limit switches, a sample introduction channel and a sample sending channel, wherein the operation panel 12 is embedded in the surface of the shell 11, two glass barrels 1, 2 are arranged in the shell, and the top of the glass barrels is connected with the pressure sensors 5 and is connected with the sample introduction channel 7 and the sample introduction channel 8 through an air inlet valve and an air outlet valve; a piston rod 4 and a piston rod 3 are arranged in the glass barrels, the lower parts of the glass barrels are connected with ball screws 10, supports 19 are arranged outside the ball screws, the upper lead limit switches and the lower lead limit switches are arranged at the top or bottom of the supports, and the ball screws 10 are connected with motors 6. The device can be utilized to automatically weigh the gas, and is reliable in method and theory, convenient to operate, large in measuring range, strong in sealing property, small in error, high in working efficiency, and is capable of automatically accessing the measuring data, so that the device has a wide market prospect.

The present invention relates to a corrosion-resistant temperature measurement transducer, including metal protective tube fixed by utilizing connecting supporting seat and temperature-sensing element assembled in the metal protective tube. It is characterized by that a corrosion-resistant protective tube is combined on the external surface of said metal protective tube, the corrosion-resistant protective tube and metal protective tube are fixed in the connecting supporting seat together, and packaged and tightly locked by utilizing corrosion-resistant flexible sealing plug and corrosion-resistant sealing cover and by means of body-separated double-thread pipe. It can obviously raise its corrosion-resistant effect and service life, and can broaden its application range.

The invention relates to a turbine flowmeter, particularly to an impeller device and a turbine flowmeter. The impeller device comprises an impeller assembly and a first rotating shaft, wherein the impeller assembly can rotate around the first rotating shaft, and the end of the first rotating shaft abuts against the impeller assembly and makes point contact with the impeller assembly. According tothe impeller device, when the impeller assembly rotates, the frictional resistance of the impeller device is smaller than that of an existing turbine flow meter, so that the metering sensitivity of the impeller device is high, and the minimum value capable of being metered is small so as to widen the metering range of the turbine flow meter.

The invention discloses a composite transformation ratio self-adaptive intelligent current transformer device which comprises an iron core, a built-in hardware circuit unit, a power transformer primary winding, a metering current transformer primary winding, a power transformer secondary winding and a metering current transformer secondary winding. The iron core comprises a power supply iron coreand a metering iron core, the power transformer primary winding is a center-penetrating turn, and the power transformer secondary winding is uniformly wound on the power iron core. The metering current transformer primary winding is a straight-through turn, and the metering current transformer secondary winding is uniformly wound on the metering iron core. The power transformer primary winding isconnected in series with the metering current transformer primary winding, and the power transformer secondary winding and the metering current transformer secondary winding are connected with the built-in hardware circuit unit. The composite transformation ratio self-adaptive intelligent current transformer device is wide in metering range and high in metering precision, enables the problem of electric energy metering missing to be reduced and the metering accuracy to be improved, and guarantees the fairness of the electric energy transactions.

The invention relates to the technical field of natural gas collection and transportation and particularly relates to a double-pipe metering device, a double-pipe metering method and a double-pipe metering system. The double-pipe metering device comprises a main pass metering section and a bypass metering section which are connected in parallel, wherein the main pass metering section and the bypass metering section are connected with an upstream pipeline through the same inlet and connected with a downstream pipeline through the same outlet, and the bypass metering section is used for being matched with the main pass metering section to meter output flow. According to the device, the metering process is optimized, the metering range is expanded, the application range is wide, technical defects of a single-tube metering mode are overcome, metering precision is improved, and economic loss of downstream users is reduced; the bypass metering section can be opened and the main metering section can be closed for maintenance under the condition of not stopping conveying, so production efficiency is improved; the double-pipe metering system can achieve all-weather automatic control, manual intervention is not needed, labor intensity and production cost can be greatly reduced, and safety and accuracy of pipeline conveying are improved.

The invention discloses a gas-liquid two-phase flow variable-proportion thief, and belongs to the field of multiphase flow metering. The invention relates to a multiphase metering and sampling devicewith an adjustable diversion ratio. The multiphase metering and sampling device mainly comprises a diversion pipe, a main fluid chamber, a sampling chamber and sampling pipes, diversion holes are uniformly distributed in the circumferential direction of the diversion pipe, and the sampling pipes are arranged at outlets of the partial diversion holes; each sampling pipe is composed of an outer plugbody and an inner plug body, and the inner plug bodies can move up and down in the outer plug bodies; and by adjusting the sampling pipes, the flow rate of sub-fluid entering the sampling chamber canbe changed, and then the expected diversion ratio is obtained. Compared with an existing gas-liquid two-phase flow sampling device, the multiphase metering and sampling device is small in size and compact in structure, the distribution ratio can be adjusted at will, and sampled fluid and main fluid have the same gas-liquid composition and are not affected by parameters such as inlet gas-liquid phase flow velocity and flow pattern.

A dry-type high-pressure metering box is an outdoor dry-type two-element metering box and suitable for a 50Hz 15-20kV three-phase alternating current power line or a distribution transformer. By using the double-transformation-ratio wide-quantitation-limit high-pressure metering box, the transformation ratio is switched in the metering box by changing a special mutual inductor terminal box connecting piece without power outage, a meter box is integrally connected with a combined mutual inductor to form the one-piece high-pressure metering box, the meter box and the combined mutual inductor are installed and used on a column or respectively installed. When the meter box and the combined mutual inductor are respectively installed, the combined mutual inductor is installed on the column, and the meter box is installed under the combined mutual inductor and connected with the combined mutual inductor through a sheathed cable. The problem that an existing high-pressure metering box is high in failure rate and short in service life and is easily lost and stolen is solved.