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64results about How to "Prevent lingering" patented technology

Low refrigerant charging amount heat pump device and control method thereof

The invention discloses a low refrigerant charging amount heat pump device and a control method thereof. The device comprises a compressor, a compressor refrigerant gas outlet is sequentially connected with an indoor heat exchanger, a throttling device and an outdoor heat exchanger through a four-way reversing valve, an outlet of the outdoor heat exchanger is connected with an inlet of a liquid storage device through the four-way reversing valve, an outlet of the liquid storage device is connected with an inlet of the compressor, and the device further comprises a bypass pipeline; an inlet of the bypass pipeline is located between the compressor and the four-way reversing valve, an outlet of the bypass pipeline is located between the four-way reversing valve and the liquid storage device or located on the side or bottom of a shell of the liquid storage device, and a bypass electromagnetic valve is located on the bypass pipeline; under the heating condition, when the device stably runs, a refrigerant exhausted out of the compressor flows into the indoor heat exchanger through the four-way reversing valve and then flows back to the compressor through the throttling device, the outdoor heat exchanger, the four-way reversing valve and the liquid storage device, and a heating cycle is formed; and under the refrigerating condition, stable running is opposite to the heating cycle flow path. The control method of the device is further provided. In the cold starting process, the problem that a large number of refrigerants are gathered in the liquid storage device and the compressor, and consequently the pressure of an air inlet of the compressor is too low is solved.
Owner:XI AN JIAOTONG UNIV

Multipurpose spectrophotometer

The invention provides a multipurpose spectrophotometer and particularly relates to a spectrophotometer which is used for spectrum analysis. The multipurpose spectrophotometer comprises a light source, a collimation lens A, a cuvette device, a slit, a collimation reflection mirror A, an optical grating and a linear array photoelectric conversion device, wherein the cuvette device comprises a cuvette bracket and cuvettes; the cuvettes comprise a conventional cuvette and a flowing cuvette; the flowing cuvette is internally provided with a flowing colorimetric channel and the diameter of the flowing colorimetric channel is gradually increased along a flowing direction; the top of the cuvette main body is provided with a sample feeding pipe and a sample discharging pipe; the pipe diameter of the sample discharging pipe is greater than that of the sample feeding pipe; and the sample feeding pipe is connected with a liquid chromatogram flowing-in pipe through a pipeline connector. The conventional cuvette can realize the function of a common spectrophotometer and the flowing cuvette can be used as a liquid chromatogram multichannel luminosity detector; and trace colorimetry can be realized by the flowing cuvette and a trace feeding device. According to the multipurpose spectrophotometer disclosed by the invention, one machine has a plurality of functions, the use cost of an instrument is reduced, the utilization efficiency of the instrument is improved, the integration degree of the instrument is enhanced, and the reasonability of resource configuration of middle-sized and small-sized laboratory instruments is improved.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Cuvette device

The invention provides a cuvette device and relates to a device which is used for spectrum analysis. The cuvette device comprises a cuvette bracket and a cuvette, wherein the cuvette comprises a conventional cuvette which can realize a function of measuring the luminosity of common ultraviolet visible light split, and a flowing cuvette which can realize a function of detecting liquid chromatogram multichannel luminosity; the flowing cuvette comprises a cuvette body which is internally provided with a flowing colorimetric channel; the diameter of the flowing colorimetric channel is gradually increased along a flowing direction; the top of the cuvette body is provided with a sample feeding pipe and a sample discharging pipe which is downwards bent; and the sample feeding pipe is connected with a liquid chromatogram flowing pipe through a pipeline connector. The cuvette bracket comprises a base and a cylindrical bracket wall; the cylindrical bracket wall is provided with an optical fiber collimation switching-in connector and an optical fiber collimation switching-out connector; and the optical fiber collimation switching-in connector and the optical fiber collimation switching-out connector are respectively connected with optical fibers on two sides of the cuvette device through an optical fiber coupling connector. According to the cuvette device disclosed by the invention, one machine has a plurality of functions through a matched multipurpose spectrophotometer; and the cuvette device has the advantages of reasonable and reliable structure and can reduce the signal to noise ratio of an instrument.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Bird repelling device for high-voltage power transmission line towers

The invention discloses a bird repelling device for high-voltage power transmission line towers. The bird repelling device comprises a connecting rod, a plurality of air supply mechanisms, whistle mechanisms, a blade mechanism and connecting bases. The air supply mechanisms, the whistle mechanisms and the blade mechanism are erected on the upper portion of the connecting rod, the connecting basesare fixed to the bottom of the connecting rod, air force can be provided by the air supply mechanisms to push switch assemblies to start whistles, the switch assemblies are positioned at the connecting rod, air outlets are matched with one another, and accordingly the purpose of repelling birds can be ultimately achieved by the aid of different degrees of sound intensity and diversified combinations. Compared with the prior art, the bird repelling device has the advantages that the bird repelling device is simple in structure, diversified bird repelling modes are combined with one another, accordingly, the purpose of repelling the birds can be achieved, the birds can be effectively prevented from nesting or retaining on power transmission lines, the operational reliability of the power transmission lines can be improved, and bird damage accidents of the power transmission lines can be prevented.
Owner:山东恒东实业集团有限公司

Transformer substation maintenance operation centralized management and control information platform

The invention discloses a transformer substation maintenance operation centralized management and control information platform. The platform comprises a construction area, a second door area and a central control area, the second door area is arranged between the construction area and the central control area, the construction area is provided with an electronic fence and an electronic fence camera, and the electronic fence has an alarm function; the electronic fence camera has the functions of video monitoring acquisition and border crossing alarm prompt; the second door area is provided withan AI face recognition camera and an all-in-one machine, the AI face recognition camera recognizes the identity of a constructor, and the all-in-one machine is used for security personnel to verify and check in-and-out personnel information and can also give an alarm for prompting; and the central control area is provided with a control server, the control server comprises a central core controlsystem, and the central core control system is used for acquiring equipment information on the control server and displaying the equipment information on the central control large screen for background management personnel to manage and monitor conditions of a construction site in real time. Equipment used by the information platform is simple, and the information platform is reasonable in layout,easy to build, convenient to maintain and low in investment cost.
Owner:国网河南省电力公司超高压公司 +1

Silicon carbide wafer wax pasting method and auxiliary wax pasting device

The invention provides a silicon carbide wafer wax sticking method and an auxiliary wax sticking device.The silicon carbide wafer wax sticking method comprises the steps that a silicon carbide wafer is placed on a ceramic plate through the auxiliary wax sticking device, and the ceramic plate is heated; when the ceramic plate reaches a preset temperature, waxing the central position of the to-be-waxed surface of the silicon carbide wafer; wherein the to-be-waxed surface is one surface, far away from the ceramic disc, of the silicon carbide wafer; the waxed silicon carbide wafer is taken down from the ceramic plate through an auxiliary wax pasting device and cooled, and the silicon carbide wafer with a wax layer is obtained; the silicon carbide wafer with the wax layer is placed on a ceramic plate reaching the preset temperature through an auxiliary wax pasting device, so that bonding of the silicon carbide wafer and the ceramic plate is achieved; wherein the wax layer faces the ceramic plate. The auxiliary wax pasting device is adopted for manually pasting wax on the silicon carbide wafer, the requirement for the wax pasting proficiency of workers is lowered, bubbles can be eliminated in manual wax pasting, efficient manual wax pasting is achieved, and the paster yield is increased.
Owner:北京晶格领域半导体有限公司

A high-voltage transmission line tower bird repelling device

The invention discloses a bird repelling device for high-voltage power transmission line towers. The bird repelling device comprises a connecting rod, a plurality of air supply mechanisms, whistle mechanisms, a blade mechanism and connecting bases. The air supply mechanisms, the whistle mechanisms and the blade mechanism are erected on the upper portion of the connecting rod, the connecting basesare fixed to the bottom of the connecting rod, air force can be provided by the air supply mechanisms to push switch assemblies to start whistles, the switch assemblies are positioned at the connecting rod, air outlets are matched with one another, and accordingly the purpose of repelling birds can be ultimately achieved by the aid of different degrees of sound intensity and diversified combinations. Compared with the prior art, the bird repelling device has the advantages that the bird repelling device is simple in structure, diversified bird repelling modes are combined with one another, accordingly, the purpose of repelling the birds can be achieved, the birds can be effectively prevented from nesting or retaining on power transmission lines, the operational reliability of the power transmission lines can be improved, and bird damage accidents of the power transmission lines can be prevented.
Owner:山东恒东实业集团有限公司

Air-suspension transportation vehicle and suspended travelling method thereof

The invention relates to the technical field of transportation, in particular to an air-suspension transportation vehicle and a suspended travelling method thereof. The air-suspension transportation vehicle and the suspended travelling method thereof mainly aim to improve the running stability of the air-suspension transportation vehicle. The air-suspension transportation vehicle comprises a vehicle chassis, a continuous jet assembly and a pulse jet assembly. The continuous jet assembly continuously jets air of a first pressure towards the ground to enable the air-suspension transportation vehicle to suspend over the ground. The pulse jet assembly jets pulse air of a second pressure towards the ground to enable the vehicle chassis to tremble relative to the ground, the second pressure is the maximum pressure the pulse jet assembly can produce, and the second pressure is larger than the first pressure in pressure value. The pulse air enables the vehicle chassis of the air-suspension transportation vehicle to slightly tremble relative to the ground, the vehicle bottom can be prevented from staying at the uneven ground where friction is likely to be generated, the vehicle bottom can quickly break away from the uneven ground and the friction, generated by the trembling of the vehicle, between the vehicle bottom and the ground, and the running stability of the air-suspension transportation vehicle is improved.
Owner:CHINA BUILDING MATERIALS ACAD

A banknote alignment device for banknote alignment and banknote stacking

ActiveCN107633595BRealize unpowered smooth banknotesHigh banknote efficiencyCoin/currency accepting devicesEngineeringSlide plate
The invention relates to a currency arranging device for aligning currency and neatly stacking and collecting currency. The currency arranging device for aligning currency and neatly stacking and collecting currency includes a currency input device and a currency aligning device which is arranged at the tail end of the currency input device, wherein the currency input device is used for conveyingthe smooth currency which are random in the included angle between the length direction and the conveying direction and are arranged in the conveying direction in a dispersed manner on a conveyer belt; the currency aligning device includes a gravity slide-off channel which is arranged in an inclined way and an adjusting unit which is arranged in the gravity slide-off channel; the gravity slide-offchannel includes an inclined slide plate, a cover plate which is in parallel with the inclined slide plate, and two side plates which are perpendicular to the inclined slide plate and are arranged inparallel with the currency gravity slide-off direction; a currency inlet at the upper end of the gravity slide-off channel is corresponding to the tail end of the currency input device; the adjustingunit includes first and second adjusting columns which are arranged from top to bottom successively on the inclined slide plate in the currency slide-off direction and are distributed at two sides ofthe central line of the currency inlet, and an inclined guide bar which is arranged in the direction being perpendicular to the inclined slide plate; the upper end of the inclined guide bar is engaged with the lower part of the second adjusting column; and the lower end of the inclined guide bar is arranged approaching to the central line of the gravity slide-off channel.
Owner:SICHUAN ENG TECHN COLLEGE
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