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57results about How to "Avoid long running" patented technology

Modular multi-connection control method and system

The invention discloses a modular multi-connection control method and system. The control method comprises the following steps: determining the auxiliary engine capability requirement according to the total capability requirement of an indoor machine set and the best load point of a main engine; calculating the total number of the auxiliary engine compressors required to be input for the operation of the system according to the output capability of a single auxiliary engine compressor; and distributing the total number of the auxiliary engine compressors required to be input for the operationon average to each auxiliary engine, and distributing the parts which can not be distributed on average in each auxiliary engine one by one. According to the invention, through calculating the numberof the compressors required to be operated, the capability output of an outdoor machine set is basically and uniformly distributed to the main engine and each auxiliary engine of the outdoor machine set, the main engine and parts of auxiliary engine compressors are prevented from operating for a long time, the service life of each compressor of the whole machine set is prolonged, and the load energy efficiency ratio of the system part is improved greatly.
Owner:TCL AIR CONDITIONER ZHONGSHAN CO LTD

Construction method for split burying of large T-shaped sleeve bolt

The invention relates to a foundation construction method of large equipment, especially a construction method for split burying of a large T-shaped sleeve bolt, comprising the following steps: setting embedded iron parts on a bedding layer; mounting blot fixing frames above the embedded iron parts; after determining central control point positions of the bolts, welding anchor plates on the blot fixing frames; welding anchor boxes at the bottom of the anchor plates; rechecking the positions of the anchor plates and the anchor boxes, and then hoisting bolt sleeves; exactly assembling the bolt sleeves and the anchor plates, then welding and fixing; hoisting T-shaped bolt rods, fixing the T-shaped heads of the T-shaped bolt rods and the anchor plates by bolts, welding top covers of the sleeves on the upper parts, cleaning sundries surrounding the bolts, checking the welding quality, and rechecking the positions of the bolts. Compared with the traditional hoisting method, the method in the invention can reduce kinds and amounts of approach engineering machines, and can reduce constructors so as to improve working efficiency, reduce construction cost, reduce environment pollution and noise pollution, guarantee green construction and meet the national requirements of energy conservation and emission reduction.
Owner:CHINA 22MCC GROUP CORP +1

Circulation cooling system

The invention discloses a circulation cooling system. The circulation cooling system comprises a first cooling tank, a second cooling tank, a connecting pipe, a driving pump, a radiator, control valves and a controller, wherein the first cooling tank and the second cooling tank are both used for accommodating coolants; the first cooling tank, the driving pump, the radiator and the second cooling tank are connected in series in sequence; the second cooling tank is also used for connecting to-be-cooled equipment through the connecting pipe; the control valves are arranged on the connection pipe between the second cooling tank and the to-be-cooled equipment; the to-be-cooled equipment is also connected to the first cooling tank through the connecting pipe; the height from the second cooling tank to the ground is higher than that from the first cooling tank to the ground; when the circulation cooling system is in use, the height from the to-be-cooled equipment to the ground is between the height from the second cooling tank to the ground, and the height from the first cooling tank to the ground; the controller is electrically connected to the driving pump and the radiator; and the radiator is used for performing heat dissipation on the coolants flowing through the radiator. By adoption of the circulation cooling system, the operating power of the pump can be lowered, and maintenance can be performed conveniently.
Owner:广东西江数据科技有限公司

Construction method for split burying of large T-shaped sleeve bolt

The invention relates to a foundation construction method of large equipment, especially a construction method for split burying of a large T-shaped sleeve bolt, comprising the following steps: setting embedded iron parts on a bedding layer; mounting blot fixing frames above the embedded iron parts; after determining central control point positions of the bolts, welding anchor plates on the blot fixing frames; welding anchor boxes at the bottom of the anchor plates; rechecking the positions of the anchor plates and the anchor boxes, and then hoisting bolt sleeves; exactly assembling the bolt sleeves and the anchor plates, then welding and fixing; hoisting T-shaped bolt rods, fixing the T-shaped heads of the T-shaped bolt rods and the anchor plates by bolts, welding top covers of the sleeves on the upper parts, cleaning sundries surrounding the bolts, checking the welding quality, and rechecking the positions of the bolts. Compared with the traditional hoisting method, the method in the invention can reduce kinds and amounts of approach engineering machines, and can reduce constructors so as to improve working efficiency, reduce construction cost, reduce environment pollution and noise pollution, guarantee green construction and meet the national requirements of energy conservation and emission reduction.
Owner:CHINA 22MCC GROUP CORP +1

Small lever type energy-saving ship lift and operation method thereof

The invention discloses a small lever type energy-saving ship lift and an operation method thereof. The small lever type energy-saving ship lift is applicable to ship navigation of small water retaining structures. The ship lift comprises an upstream approach channel, an upper lock head, a ship chamber section, a lower lock head and a downstream approach channel which are sequentially intercommunicated with one another from upstream to downstream. The ship lift is characterized in that the ship chamber section comprises a lever, a transmission shaft and two cylindrical type ship bearing chambers, wherein the transmission shaft is of a driving braking structure, and two ends of the transmission shaft are connected to a dam body or a firm foundation rock; the transmission shaft is rigidly connected to the middle part of the lever; the two cylindrical ship bearing chambers are correspondingly connected to two ends of the lever. The ship lift is applicable to one-way navigation or two-waynavigation of a ship, so that the ship navigation efficiency is improved; moreover, the gravitational potential energy of ships at the upstream and the downstream can be converted with each other based on the lever principle, so that the transferring energy consumption is greatly reduced.
Owner:HOHAI UNIV

Modular multi-connection control method and system

The invention discloses a modular multi-connection control method and system. The control method comprises the following steps: determining the auxiliary engine capability requirement according to the total capability requirement of an indoor machine set and the best load point of a main engine; calculating the total number of the auxiliary engine compressors required to be input for the operation of the system according to the output capability of a single auxiliary engine compressor; and distributing the total number of the auxiliary engine compressors required to be input for the operationon average to each auxiliary engine, and distributing the parts which can not be distributed on average in each auxiliary engine one by one. According to the invention, through calculating the numberof the compressors required to be operated, the capability output of an outdoor machine set is basically and uniformly distributed to the main engine and each auxiliary engine of the outdoor machine set, the main engine and parts of auxiliary engine compressors are prevented from operating for a long time, the service life of each compressor of the whole machine set is prolonged, and the load energy efficiency ratio of the system part is improved greatly.
Owner:TCL AIR CONDITIONER ZHONGSHAN CO LTD

Inverter device and method for control of inverter system

The present invention discloses an inverter device and a method for control of an inverter system. The inverter device comprises an inverter main body and a housing receiving the inverter main body, the two sides of inner bottom portion of the housing are fixed with vertically arranged damping posts, the top portions of the damping posts are fixed with the inverter main body, the inner walls of the two sides of the internal portion of the housing are fixed with vertically arranged slide rails, the sliding ends of the slide rails are fixed with sliding blocks, one side of the top portion of thehousing is hinged with a protection cover, the two sides of the inner bottom wall of the protection cover is fixed with a butting block, the bottom portion of the butting block is butted against thetop portion of the inverter main body, the top portion of the protection cover is provided with a first round opening portion, the bottom portion of the protection cover located at the lower portion of the first round opening portion is provided with a first fan, the bottom wall of the housing is provided with a second round opening portion, and the top portion of the protection cover located at the upper portion of the second round opening portion is provided with a second fan. The inverter device is ingenious in design and reasonable in structure, and the method is reasonable and is suitablefor promotion and usage.
Owner:宁波德业变频技术有限公司

Purified water resource sharing device for filling lines

The invention provides a purified water resource sharing device for filling lines. The purified water resource sharing device comprises a purified water producing tank, a water supply pipeline, supply pumps, an electromagnetic valve, a high-liquid-level sensor, a low-liquid-level sensor, a purified water storage tank and a plurality of water consuming pipelines. The lower end of the purified water producing tank is connected with the top of the purified water storage tank by the water supply pipeline, the first supply pump is mounted on the water supply pipeline and is close to the purified water producing tank, the electromagnetic valve is mounted on the water supply pipeline and is close to the purified water storage tank, the high-liquid-level sensor and the low-liquid-level sensor are arranged on the purified water storage tank, the supply pumps and the electromagnetic valve can be turned on and off under the control of the high-liquid-level sensor and the low-liquid-level sensor, the multiple water consuming pipelines are connected to the lower end of the purified water storage tank, and the corresponding second supply pump is mounted on each water consuming pipeline. The purified water resource sharing device for the filling lines has the advantages that sufficient water can be assuredly supplied to the various filling lines, cleaning procedures can be smoothly carried out, accordingly, manual intervention can be reduced, the next-day production continuity and efficiency can be guaranteed, and the safety of the supply pumps can be protected.
Owner:SINO FRENCH JOINT VENTURE DYNASTY WINERY

A wind turbine generator high-speed shaft dynamic centering monitoring method and system

The invention discloses a wind driven generator high-speed shaft dynamic centering monitoring method. The method comprises following steps that a, a gearbox high-speed shaft is provided with a pulse trigger device and a centering detection device; b, a periodical pulse signal generated by the pulse trigger device is used for triggering the centering detection device of the wind driven generator high-speed shaft to measure centering data; c, every time the wind driven generator high-speed shaft rotates by a circle, centering data with the set time number are measured, and through the wireless transmission manner, the centering data are transmitted to a signal processing module; d, the measured data are analyzed, the actual measuring deviation values delta x, delta y and delta theta are obtained, through comparison of values of the actual measuring deviation and the allowable deviation and the acute measuring deviation and the preset limit deviation, the real-time centering state of a unit is analyzed, the unit centering state is sent to a master control system, according to the corresponding centering state, the unit control strategy is adjusted, early warning or alarm signals are sent out, and unit safety is ensured; the invention further provides a wind driven generator high-speed shaft dynamic centering monitoring system. Through the system and method, the dynamic centeringstate of the high-speed shaft can be effectively monitored, and the unit running reliability can be improved.
Owner:ZHEJIANG WINDEY
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