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87results about How to "Self-regulating" patented technology

Low voltage traversing control method of wind generator set

A response control method for the lower voltage traversing of a wind generating set is characterized in that changing situation of the voltage us of a power network is detected at any time; the power the voltage us of the power network is compared with a reference value of the voltage us of the power network, and a wattless current iqref<*> as well as an effort current idref <*> are obtained by an obtained difference value Delta u through a PI adjustor; the wattless current iqref<*> is taken as the reference value for the inner loop control of the circuit to cooperate with the control strategies of the outer loop of the voltage and the inner loop of the circuit to control a network side inverter and restrain the depreciation of the voltage of the power network as well as the effect loss of the compensating chain of the effect circuit idref<*>. Under the situation that the voltage of the power network declines instantly, the invention can flexibly feed corresponding reactive powers according to requirements, adjust the effect power correspondingly as well, lead the wind generating set to reach a transmission reliability standard similar to a fire generating set, and has the capacity of self adjustment.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Solar photovoltaic power generating system supporting frame

The invention discloses a solar photovoltaic power generating system supporting frame which comprises a base, a fixed mounting plate, a pin seat, a movable mounting plate, a guiderail, a slide block, bearing seats, a driving lead screw, a driving motor, a connecting rod and photovoltaic power generating boards. The pin seat is fixedly arranged at the front end of the fixed mounting plate. The front end of the movable mounting plate is connected with the movable end of the pin seat. The guiderail is fixedly connected with the fixed mounting plate. The slide block can slide on the guiderail. Furthermore the slide block is provided with a threaded hole. The bearing seat is fixedly mounted on the fixed mounting plate. The bearing seats are arranged at the front end and the back end of the guiderail. The driving lead screw is connected with the slide block through a thread. The output shaft of the driving motor is fixedly connected with the driving lead screw. Two ends of the connecting rod are respectively connected with the slide block and the movable mounting plate through pins. The photovoltaic power generating boards are mounted on the upper end surface of the movable mounting plate. The solar photovoltaic power generating system supporting frame has advantages of simple structure, automatic operation, self production from wind and sand, etc.
Owner:SHANGLUO UNIV

Insulated fireproof bus duct

The invention discloses an insulated fireproof bus duct, which comprises a shell and a conductor, wherein the shell consists of a side plate and a cover plate which are connected with each other through a fastener to clamp the conductor; the inner wall of the shell is sprayed and coated with fireproof materials; the conductor is coated by a high temperature resistant reinforced mica tape and externally coated by an insulator heat shrinkage sleeve; an interphase and a terminal are provided with spacer blocks made of inorganic glass fiber reinforcing materials; and the side plate and the conductor are riveted and fixed on a joint through a butterfly spring. The insulated fireproof bus duct can be fireproof for a long time, and the conductor is coated by the high temperature resistance reinforced mica tape and externally coated by the insulator heat shrinkage sleeve; the spacer blocks are made by pressing the inorganic glass fiber reinforcing materials, so that the spacer blocks are noncombustible and inexplosive and have good mechanical property; the inner wall of the shell is sprayed and coated with the fireproof materials, so that the back-fire temperature is reduced or the fireproof time is prolonged; and the butterfly spring has the function of automatic regulation to make the pressure uniformly applied to the contact surface, so that the contact resistance and the temperature rise are reduced. Moreover, the insulated fireproof bus duct has large capacity, low line loss, high short-circuit strength and good heat dispersion.
Owner:KUNSHAN POWER SUPPLY CO LTD OF JIANGSU ELECTRICPOWER +1

Bus-bar unit connecting device

The invention relates to a busway unit connecting device which is used for connecting the compact busway trough units. The device is structured into a connector assembly by two insulated clapboards 1, eight conductive connecting plates, six insulated clapboards 2, three connector heat dissipation slices, a connector press plate, a connector sleeve pipe, a disk spring, a insulated sleeve pipe and a four-phase busway trough bar. As showed in the figure, the two insulated clapboards 1, the six insulated clapboards 2 and the eight conductive connecting plates clamp the four-phase busway trough bar by groups; the two insulated clapboards 1 are arranged at the furthest outside of the connector assembly. The middle parts of the insulated clapboards 1, the conductive connecting plates, the insulated clapboards 2, the connector heat dissipation slices and the connector press plate are all provided with connecting holes; a bolt connection pair with external hexagonal angles is invaginated into the insulated sleeve and then perforates the connecting holes and is nested by the connector press plate and the connector sleeve pipe; the connector press plate is tightly pressed after the nut is fastened. A protection cover is formed by two up and bottom connector cover plates and two left and right connector side plates at the periphery of the connector assembly.
Owner:JIANGSU SUCCESS ELECTRIC

Tandem type dry gas sealing device for industrial steam turbine

PendingCN111828100AAchieving a silent sealAchieving a contact sealLeakage preventionMachines/enginesDry gas sealEnergy conversion efficiency
The invention discloses a tandem type dry gas sealing device for an industrial steam turbine. The device comprises two groups of rotary sealing components and two groups of static sealing component arranged in tandem. Each group of the rotary sealing component comprises a movable ring and a movable ring base. Each group of the static sealing component comprises a seal cartridge fixed in the shell,and further comprises a static ring and a corrugated pipe coaxially arranged with a shaft sleeve. Under the action of own elastic force, an inner side end face of the corrugated pipe relies on an external side end face of the static ring, thus, a contact seal structure is formed. The static ring is arranged between the corrugated pipe and the movable ring, and is in floating connection with the seal cartridge through a stop pin. When the movable ring rotates with a steam turbine shaft, the external side end face of the movable ring and the inner side end face of the static ring form a non-contact gas film lubrication state. Since the movable ring and the static ring have self-adjusting capability, stable gas film lubrication non-contact seal is formed between the movable ring and the static ring, thus, high pressure steam is sealed in the steam turbine, zero-leakage seal for the steam in the steam turbine is realized, and energy conversion efficiency of the steam turbine is improved greatly.
Owner:徐冉

Segmentation method for live pig images in complex environment

The invention discloses a segmentation method for live pig images in complex environment. The method comprises the following steps: obtaining the live pig images in real time; establishing a Cartesian coordinate system; conducting gray scale conversion to live pig images to be segmented for gray scale pictures of a live pig followed by a process for the gradient pictures of the live pig; segmenting and extracting for an initially segmented image; performing calculations on the initially segmented image; removing the connected domain for a second segmented image; calculating to obtain an object, the size of the object, the light intensity and the distance; constructing a biased swelling element; calculating the shadow compensation coefficient; processing the second segmented image for a fourth segmented image; and processing in accordance to the fourth segmented image and in combination with the second segmented image for a fifth segmented image. The method of the invention can effectively tell a pig body from a live pig image in a pig house with complicated environment. It can also process consecutively in batches and can be self-adjusted, which makes the method suitable for processing images monitoring live pigs for a long time and helps realize the automatic monitoring to live pigs.
Owner:合肥神牧信息科技有限公司

Speed reduction transmission device

The invention discloses a speed reduction transmission device. By means of the speed reduction transmission device, speed reduction transmission can be effectively carried out, the overall structure is reasonable, the matching accuracy is high, running is stable, and it can be guaranteed that the instant position fluctuations of all structures are small and errors and accumulative errors are fewer, and the transmission accuracy can be effectively guaranteed. The speed reduction transmission device comprises a tank body, a power motor, an upper worm, a lower worm and a transmission worm gear; and the upper worm and the lower worm are provided with an upper gear and a lower gear respectively, the lower worm is connected with the power motor, the upper worm and the lower worm are connected with the transmission worm gear in a matched manner, the upper gear and the lower gear are located outside the tank body, and the upper gear is meshed with the lower gear. Helical teeth of the upper worm and helical teeth of the lower worm are the same in tooth shape, the lower worm gear comprises a worm gear shaft and a sliding sleeve, the helical teeth of the lower worm are located on the sliding sleeve, and the sliding sleeve is in sliding connection with the worm shaft; and the worm shaft is provided with a limiting neck, a compensation gap is reserved between one end of the sliding sleeve and the limiting neck, and the other end of the sliding sleeve is pressed by a self-adjusting spring.
Owner:杭州轰驰科技有限公司

Infrared gesture recognition device and recognition method

The invention relates to an infrared gesture recognition device and a recognition method. The infrared gesture recognition device comprises an infrared receiving tube, an infrared compensation tube, adriving module, a control module and a plurality of infrared emission tubes which are integrated on a PCB, wherein the infrared receiving tube, the infrared emission tubes and the infrared compensation tube are respectively arranged on the back of the PCB; open holes are formed in positions corresponding to the infrared receiving tube and the infrared emission tubes on the PCB and are used for emitting and receiving infrared ray from the front of the PCB; the infrared compensation tube is used for emitting infrared ray into the PCB. Compared with the prior art, infrared emission units and aninfrared compensation unit of the device adopt proportional circuits based on mirror current sources, so that the current in the device has certain self-regulation capability and good constant-currentcharacteristic, and the device has high temperature stability; meanwhile, compared with the prior art, the device is capable of removing the interference of the background environment light and solves the disadvantage that the infrared gesture module is influenced by the environment light at present; the reliability and the stability are improved.
Owner:上海永亚智能科技有限公司

Functional food for preventing and treating cardiovascular and cerebrovascular diseases and preparation method thereof

The invention belongs to the technical field of food production, and in particular relates to functional food for preventing and treating cardiovascular and cerebrovascular diseases and a preparation method thereof. The functional food for preventing and treating cardiovascular and cerebrovascular diseases comprises the following components by weight: 10%-20% of nattokinase, 10%-20% of nitric oxide, 5%-10% of coenzyme Q10, 30%-50% of a red yeast rice extractive and 20%-25% of a ginkgo biloba extractive. Functional components with good effects in resisting cardiovascular and cerebrovascular diseases are combined scientifically and rationally; the functional food on the basis of dissolving thrombus, garbage and toxins deposited in blood vessel can enhance the elasticity and permeability of blood vessels, so as to reach the goals of clearing blood lipids and reducing blood pressure; and the coenzyme Q10 added in the functional food can protect the heart function, and enhance the body's own ability to reduce cholesterol and blood lipid. Through LD50 acute toxicity test, 30 days feeding test, and crowd efficacy observation experiments, the functional food provided by the present invention is proved to be safe, nontoxic and effective.
Owner:南京贝杉国际贸易有限公司

Aquaculture method for increasing economic benefits of penaeus vanmamei

The invention discloses an aquaculture method for increasing economic benefits of penaeus vanmamei. The aquaculture method includes steps of S1, pretreating ponds; S2, releasing young penaeus vanmamei, to be more specific, disinfecting the young penaeus vanmamei, then releasing the young penaeus vanmamei and releasing 24-40 fishes with the body weights of 300-600 g to each mu of ponds after 16-18days; S3, managing feed, and to be more specific, feeding the young penaeus vanmamei with the feed by 2-3 times per day; S4, carrying out water quality management; S5, carrying out daily management. The aquaculture method for increasing the economic benefits of the penaeus vanmamei has the advantages that aquaculture processes are optimized, resource utilization can be improved by mixed aquaculture modes, and the penaeus vanmamei can quickly grow and develop; the water change volumes can be reduced by the aid of self-regulating ability of water, and water pollution can be abated; outbreak andepidemic of bacterial diseases and viral diseases can be effectively inhibited, the penaeus vanmamei is invulnerable to threat of floccosoids, and accordingly the yield of the penaeus vanmamei and theeconomic benefits of penaeus vanmamei aquaculture can be effectively increased.
Owner:定远县和润水产养殖专业合作社

Outdoor electrical control cabinet with dehumidifying and cooling functions, and control method therefor

The invention discloses an outdoor electrical control cabinet with dehumidifying and cooling functions, and a control method therefor. A dehumidifying and cooling apparatus equipped with a condensing and water-collecting assembly and a semiconductor refrigerating part is provided for performing dehumidifying and cooling on the interior of the control cabinet, and discharging condensed water out of the cabinet so as to avoid influence from tropical island weather on the electrical control cabinet installed outdoors, and to solve the problems that an internal PCB, a circuit board, an electronic clamp part, a CPU and the like suffer from moisture, corrosion, breakdown, damage and the like; therefore, constant-temperature and stable operation of the electrical control cabinet is ensured, thereby satisfying requirements of tropical island plant establishment and normal operation; in addition, solar energy power generation can be performed automatically according to solar intensity; and the electrical cabinet can be subjected to grid connection with the mains supply for realizing power supply, so that the dehumidifying and cooling functions are improved, and automatic regulation is achieved according to weather changes.
Owner:BAOSTEEL ZHANJIANG IRON & STEEL CO LTD

Low voltage traversing control method of wind generator set

A response control method for the lower voltage traversing of a wind generating set is characterized in that changing situation of the voltage us of a power network is detected at any time; the power the voltage us of the power network is compared with a reference value of the voltage us of the power network, and a wattless current iqref<*> as well as an effort current idref <*> are obtained by an obtained difference value Delta u through a PI adjustor; the wattless current iqref<*> is taken as the reference value for the inner loop control of the circuit to cooperate with the control strategies of the outer loop of the voltage and the inner loop of the circuit to control a network side inverter and restrain the depreciation of the voltage of the power network as well as the effect loss of the compensating chain of the effect circuit idref<*>. Under the situation that the voltage of the power network declines instantly, the invention can flexibly feed corresponding reactive powers according to requirements, adjust the effect power correspondingly as well, lead the wind generating set to reach a transmission reliability standard similar to a fire generating set, and have the capacity of self adjustment.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Internal compression type rubber self-sealing flange connection pipeline universal joint

An internal compression type rubber self-sealing flange connection pipeline universal joint comprises an outer sleeve and an inner sleeve. One end of the inner sleeve is sleeved with one end of the outer sleeve, and a sealing device is arranged on the sleeving portion. The universal joint is characterized in that the sleeved end of the inner sleeve is provided with a sphere pipe part; the two ends of the outer spherical surface of the sphere pipe part are matched with a spherical surface on the inner wall of the outer sleeve and a spherical surface arranged on the inner wall of a pressing flange respectively; the pressing flange is connected with the outer sleeve through a bolt to fix the sphere pipe part; the sphere pipe part can freely rotate by a certain angle to achieve universal compensation; the pressing flange, the inner wall of the outer sleeve and the middle of the outer spherical surface of the sphere pipe part form a closed cavity; a sealing ring is arranged in the cavity; an annular inner pressing cavity with the axial section being in a swallow-tail shape or a T shape is formed in the inner ring face of the sealing ring; the outer surface of the sealing ring makes contact with the pressing flange, the inner wall of the outer sleeve and the outer surface of the sphere pipe part; a certain number of inner pressing through holes are formed in the pipe wall, opposite to the opening of the annular inner pressing cavity, of the sphere pipe part, so that the annular inner pressing cavity is communicated with the inner cavity of the inner sleeve.
Owner:刘从荡
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