47results about How to "Uniform distribution of field strength" patented technology

The invention relates to a tightly coupling hollow high-temperature superconducting inductor comprising a short connection bus, a nonmetallic Dewar type container, a clockwise winding, an anticlockwise winding, liquid nitrogen, a refrigeration system and a polyimide film, wherein, the clockwise winding and the anticlockwise winding are dipped into the liquid nitrogen which is stored in the nonmetallic Dewar type container; the short connection bus is respectively connected with the clockwise winding and the anticlockwise winding, and the refrigeration system, the nonmetallic Dewar type container, the clockwise winding, the anticlockwise winding and the liquid nitrogen are connected to form a liquid nitrogen circulation cooling system; the insulation material polyimide film is arranged between turns and layers of the clockwise winding and the anticlockwise winding. Compared with the traditional inductor, the invention has the advantages of small volume, light weight, high reliability, low power consumption and the like, is characterized by strong current limiting capacity and automatic current equalizing ability, avoids the defects of oil leakage, easy burning and the like of the oil dipping inductor and ensures operation safety. The invention has no iron cores and no ferromagnetic saturation, and has favorable inductance linearity.

The invention provides an ultrasonic wave and microwave extraction system for traditional Chinese medicines. The system is provided with a coordinated regulation device, wherein a first alarm device, a second alarm device and a third alarm device are arranged on the coordinated regulation device; the coordinated regulation device firstly controls microwave lead-in devices to lead in microwaves, after a certain time, the first alarm device sends an alarm signal to the coordinated regulation device, and the coordinated regulation device controls an ultrasonic wave lead-in device to lead in ultrasonic waves; after a certain time, the second alarm device sends an alarm signal to the coordinated regulation device, and the coordinated regulation device controls the microwave lead-in devices and the ultrasonic wave lead-in device to change the operating powers to be respectively lower than the initial powers of the microwave lead-in devices and the ultrasonic wave lead-in device; the third alarm device sends an alarm signal to the coordinated regulation device after the microwave lead-in devices and the ultrasonic wave lead-in device work with the changed operating powers for a certain time, and the coordinated regulation device firstly controls the microwave lead-in devices to stop working and then controls the ultrasonic wave lead-in device to stop working. The best matching effects of ultrasonic waves and microwaves are achieved by arranging the coordinated regulation device to strictly control the lead-in time, lead-in order, lead-in powers and closing time of the ultrasonic waves and the microwaves.

The invention discloses an outdoor high voltage solid-sealed polar pole or recloser which comprises a solid insulation shell, an upper wire inlet conductor, a capacitor, a vacuum arc-extinguishing chamber, a lower wire outlet conductor, a transition conductive connection part and a grounding layer. The solid insulation shell is provided with the upper wire inlet conductor, the capacitor, the vacuum arc-extinguishing chamber, the lower wire outlet conductor, and the transition conductive connection part. The grounding layer is arranged at the outer surface of the solid insulation shell. The upper and lower ends of the vacuum arc-extinguishing chamber are provided with upper and lower shielding rings. The lower end of the transition conductive connection part is provided with a shielding ring, and one side of the transition conductive connection part is also provided with temperature sensor. According to the outdoor high voltage solid-sealed polar pole or recloser, through introducing the design of the grounding layer, the shielding rings and the temperature sensor, the prepared outdoor high voltage solid-sealed polar pole or recloser can measure the current and voltage in a line, equipment is protected, the influence of an external environment is small, and thus the overall reliability stability and security are improved.

The invention discloses a needle-plate electrode corona discharge assembly for an AC-DC high voltage test; the needle-plate electrode corona discharge assembly comprises a needle array electrode, and an upper metal plate electrode and a lower metal plate electrode; the needle array is nested in the upper metal plate connected with a high voltage generator; the lower metal plate electrode is grounded; the upper and lower metal plate electrodes are respectively connected with an upper insulation plate and a lower insulation plate, and the distance between the upper and lower metal plate electrodes is adjustable; a sample is placed on the lower metal plate electrode and right opposite to the needle array; after the voltage is applied, uniform corona discharge is generated between the needle array electrode and the metal plate electrodes, and the distance between the upper and lower metal plate electrodes can be adjusted so as to respectively carry out charge characteristic test and rapid corona aged test for the sample. The beneficial effects are that the height between the upper and lower metal plate electrodes so as to respectively carry out the charge characteristic test and the rapid corona aged test; the length of the lower metal plate electrode equals to 5-8times of that of the needle array, so corona discharge test can be simultaneously carried out for many samples.

The invention provides an ultrasonic wave and microwave extraction system and process. The ultrasonic wave and microwave extraction system has a cooperative regulating apparatus. The cooperative regulating apparatus controls a microwave introducing device to introduce microwaves at first, then a first alarm device sends an alarm signal to the cooperative regulating apparatus after a certain period of time, and the cooperative regulating apparatus controls an ultrasonic wave introducing device to introduce ultrasonic waves; after a certain period of time, a second alarm device sends an alarm signal to the cooperative regulating apparatus, and the cooperative regulating apparatus controls the microwave introducing device and the ultrasonic wave introducing device and successively changes the running power of the microwave introducing device and the ultrasonic wave introducing device; and a third alarm device sends an alarm signal to the cooperative regulating apparatus after the microwave introducing device and the ultrasonic wave introducing device have run at the changed power for a certain period of time, and the cooperative regulating apparatus controls the microwave introducing device to stop working at first and then controls the ultrasonic wave introducing device to stop working. According to the invention, the system strictly controls introduction time, introduction sequence, introduction power and turn-off time of the ultrasonic waves and the microwaves, so an optimal matching effect of the ultrasonic waves and the microwaves is realized.

The invention provides an ultrasonic wave and microwave extraction system equipped with a reflux unit and used for traditional Chinese medicinal materials. The ultrasonic wave and microwave extraction system comprises a second reflux unit. The second reflux unit has a taper drainage cover which is inserted into a sample solution device; the large end surface of the taper drainage cover covers a whole liquid level and is located at a position which is above the liquid level and closest to the upper end of the sample solution device, so all the gas produced during microwave heating can enter the taper drainage cover and form liquid through condensation under the action of the inner wall of the taper drainage cover, and the formed liquid flows back to a sample solution along the taper drainage cover, thereby reducing air pressure above the sample solution device and improving an ultrasonic vibration effect.

The invention relates to the field of an electric system high voltage technique and an equipment manufacturing technique, in particular to an outdoor compound insulation high-voltage anti-thunder support. The outdoor compound insulation high-voltage anti-thunder support comprises an insulation pipe, an upper metal flange is arranged at the upper end of the insulation pipe, a lower metal flange isarranged at the lower end of the insulation pipe, the insulation pipe is filled with a metal oxide valve block set, a silicone rubber sheath sleeves the insulation pipe, and umbrella skits are arranged on the silicone rubber sheath. By means of the outdoor compound insulation high-voltage anti-thunder support, the insulating and supporting performance of a conventional high-voltage insulation support is integrally combined with the anti-thunder performance of a metal oxide lightning arrester, the insulating level is increased, the anti-thunder effect is also good, the outdoor compound insulation high-voltage anti-thunder support can be installed at an outdoor transformer substation bus or incoming line, the site space can be saved, compact arrangement of electrical equipment is facilitated, the electrical installation distance between the support and protected equipment can be shortened, the anti-thunder level of a transformer substation is effectively increased, the power supply reliability is improved, and a series of economic loss when the equipment is damaged due to insulation breakdown is reduced.

The invention discloses an amorphous alloy dry-type transformer coil insulating structure and a method of removing local discharge signal noise. The amorphous alloy dry-type transformer coil insulating structure comprises a coil end (1), coil segments, a coil winding (3) and an outer coil part (5), and the amorphous alloy dry-type transformer coil insulating structure is characterized in that the coil end (1) is a rectangular end ring with beautiful outline and strong mechanical strength; the coil segments are isolated by dovetail cushion blocks, so that the space is enough to facilitate the heat dissipation and complete impregnation of impregnating varnish; and the coil winding (3) is wound in a rectangular cylindrical structure, the outer coil part (5) is subjected to bundling, vacuum pressure drying, varnish impregnating and curing processes so as to guarantee uniform field intensity distribution and strong anti-short circuit capability. In the local discharge monitoring process, a sensor collects a discharge signal and sends the discharge signal to a noise analyzer, and the noise analyzer separates the periodical narrow-band interference and white noise in the noise; and compensation signals with equal compensation size and opposite polarities are compensated, a real local discharge signal can be obtained, and a technician can accurately judge the insulating problem of the amorphous alloy dry-type transformer.

The invention relates to a low-partial-discharge-value single-structure-based mutual inductor and a manufacturing method thereof. The low-partial-discharge-value single-structure-based mutual inductor comprises a piece of semiconductor crepe paper 2, a P1 terminal 3, a conducting rod 4, a mutual inductor coil 6, and a P2 terminal 7 and is characterized in that the conducting rod 4 is arranged below a primary terminal; a C-shaped semiconductor paper plate 5 is arranged at the inner side of the conducting rod 4 and is fixed on the conducting rod 4 by the semiconductor crepe paper 2; and the mutual inductor coil 6 is sleeved into a primary coil of the mutual inductor. The mutual inductor has the following advantages: the primary coil of the mutual inductor forms a uniform electric field under a high voltage and electric field intensities of all parts of the mutual inductor are distributed uniformly; the field intensity transition is in a smooth mode; no field intensity distortion phenomenon occurs; when the partial discharge value is measured in a test voltage state, the apparent discharge magnitude is low; and the partial discharge value inside the mutual inductor is reduced in a high voltage state.

The invention provides a split type diameter expanded lead for extra high tension onsite test. The split type diameter expanded lead comprises at least two spacer discs and groups of split leads, eachgroup of split leads is composed of at least two sub leads, each spacer disc is provided with groups of split lead through holes correspondingly, the groups of split lead through holes are distributed annularly in the spacer disc, each group of split lead through holes includes at least two sub lead holes, each sub lead penetrates the corresponding sub lead through hole in each spacer disc, the spacer discs are fixed to the groups of split leads separately, and the two ends of each split lead are fixed via conductive wire pressing plates respectively. Splitting in different sizes are combinedto improve the equivalent radius of the diameter expanded lead effectively and reduce the surface field intensity of the lead, the weight of the lead is reduced via special material and structure, and the split type diameter expanded lead can be used for partial discharge test with strict requirements for the corona and partial discharge amount as well as for insulation test.

The invention provides an ultrasonic wave and microwave extraction process. In the process, a cooperative regulating apparatus is used. The cooperative regulating apparatus controls a microwave introducing device to introduce microwaves at first, then a first alarm device sends an alarm signal to the cooperative regulating apparatus after a certain period of time, and the cooperative regulating apparatus controls an ultrasonic wave introducing device to introduce ultrasonic waves; after a certain period of time, a second alarm device sends an alarm signal to the cooperative regulating apparatus, and the cooperative regulating apparatus controls the microwave introducing device and the ultrasonic wave introducing device and successively changes the running power of the microwave introducing device and the ultrasonic wave introducing device; and a third alarm device sends an alarm signal to the cooperative regulating apparatus after the microwave introducing device and the ultrasonic wave introducing device have run at the changed power for a certain period of time, and the cooperative regulating apparatus controls the microwave introducing device to stop working at first and then controls the ultrasonic wave introducing device to stop working. According to the invention, introduction time, introduction sequence, introduction power and turn-off time of the ultrasonic waves and the microwaves are strictly controlled, so an optimal matching effect of the ultrasonic waves and the microwaves is realized.

The invention relates to a high-voltage bushing and high-voltage electrical equipment of using the same. A mean field section is set into a smooth shape, is relatively regular in shape and is free ofa protruding tip, so that the electric field intensity of an electric field at various positions on the mean field section is basically the same when the mean field section is in the electric field, and the maximum electric field intensity on a sleeve body is relatively reduced, thereby ensuring the insulating capacity of the high-voltage bushing, avoiding the flashover phenomenon of the high-voltage bushing and improving the security level of the high-voltage bushing.

The invention relates to a horn antenna, in particular to a plane horn antenna capable of achieving gap embedding amplitude calibration. The antenna comprises a micro-strip feeder line (1), a horn antenna body (2) and gaps (3), wherein the micro-strip feeder line (1), the horn antenna body (2) and the gaps (3) are integrated on a dielectric substrate (4). The micro-strip feeder line (1) is connected with an antenna port (5) and an antenna narrow port (6). The horn antenna body (2) is composed of a first metal plane (8), a second metal plane (10) and two rows of metallization via hole horn side walls (11), four sub-horns are formed in the horn antenna body (2) through the middle gap (14), the left gap (20) and the right gap (21) forming the gaps (3), one ends of the four sub-horns are close to the antenna narrow port (6), and the other ends of the four sub-horns are close to but no reach an antenna aperture face (19). The aperture efficiency and the gain of the antenna can be improved.

The invention discloses a prefabricated welding type cable insulation joint and a manufacturing method thereof. The prefabricated welding type cable insulation joint comprises a joint conductor connecting layer, an inner semi-conductive connecting layer, an insulation recovery layer, a first insulation recovery layer, a second insulation recovery layer, a first outer semi-conductive layer and a second outer semi-conductive layer. The prefabricated membranes or modules of all the layers are manufactured indoors in advance and then recovered layer by layer in a construction site, so the influence of uncontrollable factors and severe environments of site construction on joint quality can be avoided; and in addition, an annular groove is formed in a first prefabricated insulation module in anaxial direction, an annular prefabricated outer semiconductor module is arranged in the annular groove, and the first prefabricated insulation module and a second prefabricated insulation module are then subjected to heating and pressurizing together, so the first semi-conductive layer, the first insulation recovery layer and the second insulation recovery layer can be integrally formed at a time,the structure that the first semi-conductive layer is buried in the first insulation recovery layer can be synchronously formed, joint recovery time can be further shortened to 2-3 hours, and fabrication efficiency is improved.

The invention discloses a detection device for measuring local discharging under the temperature gradient and the method. The detection device comprises an oil tank containing silicon oil, a temperature control unit, a sample and a local discharging measurement unit. The temperature control unit comprises a temperature control circulator and a metal electrode. The sample is arranged in the metal electrode. The metal electrode is of a hollow structure and arranged in the oil tank. The metal electrode is connected with the temperature control circulator and used for temperature control. The local discharging measurement unit is connected with the metal electrode and used for detection. According to the invention, experiments in different voltage types can be performed; local discharging behaviors of electric power device main insulation layers in different voltage types under the operation state are simulated; and the local discharging detection device is simple in structure, convenient to operate, high in safe coefficients, and capable of effectively measuring experiment results.

The invention provides a packaging sandwich antenna with a function of gap embedded phase amplitude calibration, and relates to a horn antenna. The antenna comprises micro-strip feeder line (1), a horn antenna (2) and gaps (3), wherein the micro-strip feeder line (1), the horn antenna (2) and the gaps (3) are integrated on a dielectric substrate (4); the dielectric substrate (4) is located on the inner layer of a three-dimensional package (5); one end of the micro-strip feeder line (1) is connected with an internal circuit (8) through a coplanar waveguide (7) on the packaging side surface; the horn antenna (2) comprises a bottom surface metal plane (9), a top surface metal plane (10) and metallized via hole horn side walls (11); a middle gap (16), a left gap (17) and a right gap (18) are formed in the bottom surface metal plane (9) and the top surface metal plane (10); four sub-horns are arranged in the horn antenna (2), one end of each sub-horn faces the micro-strip feeder line (1), and the other end of each sub-horn is closer to but does not reach an antenna aperture surface (12). With the adoption of the antenna, the antenna gain can be improved.

The invention discloses a connecting structure of high-voltage isolated buses. The connecting structure comprises a conductive core connecting pipe and a shielding layer. The inner wall of the conductive core connecting pipe is provided with two segments of threads, conductive cores of the connecting ends of the high-voltage isolated buses are respectively provided with threads, and the threads in the inner wall of the conductive core connecting pipe and the threads in the conductive cores are mutually meshed; a conductive or semiconductive layer of the shielding layer comprises an inner conductive or semiconductive layer and an outer conductive or semiconductive layer; the inner conductive or semiconductive layer is arranged on the inner side of an insulating layer covers the whole conductive core connecting pipe; the outer conductive or semiconductive layer is arranged on the outer side of the insulating layer and extends to the outer sides of shielding layers of the high-voltage isolated buses; the two ends of the inner conductive or semicontuctive layer are respectively provided with a circle of internal stress cones; a circle of external stress cones are arranged between the shielding layer and the shielding layers of the high-voltage isolated buses; the outer conductive or semiconductive layer extends to the external stress cones. The conductive core connecting structure is simple in structure, connecting is convenient, and the mechanical strength and the conductivity of a connection part can be guaranteed. Meanwhile, the shielding layer is simple in structure and good in insulating property.

The invention provides an ultrasonic wave and microwave extraction system for traditional Chinese medicines. The system is provided with a coordinated regulation device, wherein a first alarm device, a second alarm device and a third alarm device are arranged on the coordinated regulation device; the coordinated regulation device firstly controls microwave lead-in devices to lead in microwaves, after a certain time, the first alarm device sends an alarm signal to the coordinated regulation device, and the coordinated regulation device controls an ultrasonic wave lead-in device to lead in ultrasonic waves; after a certain time, the second alarm device sends an alarm signal to the coordinated regulation device, and the coordinated regulation device controls the microwave lead-in devices and the ultrasonic wave lead-in device to change the operating powers to be respectively lower than the initial powers of the microwave lead-in devices and the ultrasonic wave lead-in device; the third alarm device sends an alarm signal to the coordinated regulation device after the microwave lead-in devices and the ultrasonic wave lead-in device work with the changed operating powers for a certain time, and the coordinated regulation device firstly controls the microwave lead-in devices to stop working and then controls the ultrasonic wave lead-in device to stop working. The best matching effects of ultrasonic waves and microwaves are achieved by arranging the coordinated regulation device to strictly control the lead-in time, lead-in order, lead-in powers and closing time of the ultrasonic waves and the microwaves.

The invention provides an ultrasonic microwave extraction system for Chinese medicinal materials. The ultrasonic microwave extraction system is provided with a coordinated regulation and control device, and the coordinated regulation and control device is provided with a first alarm device, a second alarm device and a third alarm device. The coordinated regulation and control device controls a microwave introduction device to introduce microwaves, the first alarm device sends an alarm signal to the coordinated regulation and control device after a certain time, and the coordinated regulation and control device controls an ultrasonic introduction device to introduce ultrasonic waves; after a certain time, the second alarm device sends an alarm signal to the coordinated regulation and control device, and the coordinated regulation and control device controls the microwave introduction device and the ultrasonic induction device to change the operating power, so that the operating power ofthe microwave introduction device and the ultrasonic induction device is lower than initial power of the microwave introduction device and the ultrasonic induction device, respectively; and the thirdalarm device sends an alarm signal to the coordinated regulation and control device after the microwave introduction device and the ultrasonic introduction device operate for a certain period of timeunder the condition of the changed operating power, and the coordinated regulation and control device firstly controls the microwave introduction device to stop working, and then controls the ultrasonic introduction device to stop working.