60results about How to "Effective service life" patented technology

A fluid dispenser generally includes a housing and a valving rod disposed in and movable within the housing, the valving rod including a central bore, at least one inlet for receiving a cleaning solvent, and one or more outlet ports in fluid communication with the bore, wherein the outlet ports are capable of directing cleaning solvent radially outwards from the bore and against an interior surface of the dispenser to facilitate the removal of at least a portion of any fluid product or derivatives thereof that may be in adherence with such interior surface.

The invention relates to a data conversion method based on intelligent electric energy meter metering error analysis. The concept of metering relative error weighted average is introduced through multiple data transformation algorithms, then intelligent electric energy meter metering interval analysis is performed through a confidence interval analysis method, and error result evaluation and optimization of error result optimization, abnormal correlation analysis, metering error high-order analysis approximation and the like of the transformer area edge electric energy meter are realized. A standard algorithm knowledge base for metering error analysis of the intelligent electric energy meter is established so that relative errors of the electric energy meter are accurately calculated, andmaintenance, service life and the like of the electric energy meter are effectively and accurately guided.

A cable truss type heliostat supporting device comprises a reflector (1), connecting systems (2), a steel inhaul cable net (3), trusses (4), type adjusting steel inhaul cables (5), transverse shafts (6), a stand column (7) and a driving device (8). Through connection of the connecting systems (2) at the corner point positions and the center point positions of a plurality of sub-mirrors of the reflector (1), all the sub-mirrors are connected into a whole through the steel inhaul cable net (3). The plane face type of all the sub-mirrors is converted into a double-curvature condensation face type through the type adjusting steel inhaul cables (5). Each truss (4) is connected with the steel inhaul cable net (3) and the corresponding type adjusting steel inhaul cables (5) in a multi-point supporting mode. The two transverse shafts (6) are inserted into holes of the trusses respectively in a penetrating mode and connected with the trusses (4). The driving device (8) is installed at the upper end of the stand column (7) and connected with the two transverse shafts (6). Thus, the trusses (4), the transverse shafts (6), the driving device (8) and the stand column (7) are connected into a whole.

An energy-saving traction-type elevator and an energy-saving method therefor are presented. The traction-type elevator comprises at least one counterbalance unit, each counterbalance unit comprising a traction machine, an automatic transmission, a hoist-type lifting mechanism, a power-generating electric motor, and a controller provided in a machine room, and a car, a fixed counterweight and a balancing counterbalance provided in an elevator shaft. The energy-saving method applies the principle of moment balance, whereby adding a separate elevator balancing counterbalance to achieve intelligent counterbalancing of the elevator means so that the elevator achieves relative balance, thereby reducing the traction moment and rate of work of the traction machine. When the potential energy of the elevator balancing counter-balance builds up to a high position, the power-generating electric motor can perform centralized power generation, aiding in energy recovery and use.

The invention discloses magnesium alloy cutting liquid and a preparation method thereof.Compared with the prior art, the magnesium alloy cutting liquid has high-strength hard water resisting performance, the highest magnesium hard water resistance can reach 6,000 pm, the service life of the cutting liquid is effectively prolonged, great assistance in environmental protection and energy saving advocated in the country is achieved, a liquid tank does not need to be replaced after being used for 6 month to the longest on site, and the magnesium alloy cutting liquid is environmentally friendly.

The invention discloses a technology method of overall forming of a large curved surface composite material tool steel plate. By means of preforming, heat treating, hot coal laying, steel ball filling, vibrating, heating and other steps, overall forming of the large curved surface composite material tool steel plate is finished. The method is suitable for curved surface forming of the large steel plate and especially can solve the problem of double-curved-surface forming of the large steel plate. The method can improve the forming precision of the large overall steel plate, guarantee the surface quality of the steel plate, lower the working intensity of operators and reduce potential safety hazards. Dependence on mechanical equipment strokes and skill of the operators is avoided. Standard forming technology procedures are established. The thickness of the tool forming steel plate is even, heat conduction is stable, the yield of finished products of composite materials is greatly increased, and the effective service life of a tool is greatly prolonged.

The invention relates to a control system and a control method of a trackless cable conveyor, belonging to a mountain orchard material transportation control system. The control system of a conveyor comprises a main controller, a step driver, a rotational speed transmitter and a lifting controller. The lifting controller controls a fruit basket to be suspended at the starting point of the mountaintop, triggers the main controller to send a signal to the motor stepping driver so that the cable speed is further regulated, and transports the fruit basket downhill according to the set trajectory.If loading and unloading are required temporarily during transportation, the main controller distinguishes the ridges according to the manual triggering signal at the ridges, calls the interruption program corresponding to the ridges, and performs temporary positioning hovering work. The hovering state triggers the lifting controller to perform the basket lowering operation. After the worker finishes loading and unloading, the button triggers the lift controller to execute the reset operation, the reset state triggers the end of the interrupt program, and the main controller continues to execute the main program to control the low-altitude transportation. The whole system is efficient and low cost.

The invention discloses a construction method for partition seams of a concrete floor, wherein partition seam construction of the constructed concrete floor is conducted with integrated partition seams of galvanized plates; the integrated partition seams of the galvanized plates comprise on-spot spliced partition seams made through splicing of multiple flat and straight partition seams and multiple crossed partition seams; and the partition seam construction of the constructed concrete floor comprises the steps of (1) processing of the partition seams, (2) measurement and setting out, (3) on-spot splicing of the partition seams, (4) binding of reinforcement cages, (5) overall pouring of concrete and (6) seam filling of the partition seams. The method disclosed by the invention has the beneficial effects that the on-spot spliced partition seams are completed through on-spot slicing of the flat and straight partition seams and the crossed partition seams which are processed and formed inadvance; the flat and straight partition seams and the crossed partition seams have rational design and good use effects; and problems such as a long construction period, poor use effects, low resistance to frost heaving and failure to guarantee construction equality during existing partition seam construction of large-area concrete floors can be solved effectively.

The invention discloses a gas detection device for underground detection, and relates to the technical field of gas detection. The device comprises a mounting plate, wherein the surface of the mounting plate is connected with a telescopic rod, and the upper surface of the mounting plate is connected with a gas detector; the bottom of an L-shaped plate is connected with a first pulley, a traction rope is wound on the first pulley, one end of the traction rope is fixedly connected with a second pulley, and the other end of the traction rope is fixedly connected with a third pulley; a sliding rope is wound around the third pulley, one end of the sliding rope is fixed to the bottom of the L-shaped plate, and the other end of the sliding rope is slidably connected with the second pulley; the lower end of the third pulley is connected with a floating plate floating on the water surface, and the surface of the floating plate is connected with sliding rods; the two ends of the two sliding rods are in sliding connection with probe mounting plates; and a gas detection probe is mounted on the upper surface of the probe mounting plate. Through cooperation of the first pulley, the second pulley, the third pulley, the traction rope and the sliding rope, the detection efficiency is improved, and the service life is prolonged.

The invention relates to a micro-flow pump control valve device testing system and method. A micro-flow pump control valve device is used for pumping low-flow liquid and is provided with a liquid inlet and a liquid outlet. The testing system comprises a pressure control assembly which comprises an air compressor, a pressure controller, a liquid pressure tank and a gas-liquid pressure tank; a display operation assembly which is electrically connected with the signal input port of the pressure controller, and comprises a display and an instruction input mechanism; and a metering assembly which comprises a precise weighing machine, a double-interface sealed weighing bottle and a pressure sensor. One interface of the double-interface sealed weighing bottle is in pluggable connection with a liquid outlet of the micro-flow pump control valve device through a pipeline, and the other interface of the double-interface sealed weighing bottle is in direct or indirect pipeline connection with a gas outlet of the pressure controller. The pressure sensor is selectively arranged on a liquid discharging pipeline of the micro-flow pump control valve device, and the signal output end of the pressure sensor is directly or indirectly electrically connected with the display operation assembly. Multiple indexes of the micro-flow pump control valve device can be tested.

The invention discloses a light-emitting diode (LED) lamp. The bottom of a radiator is batwing; LED heat radiation strips are fastened in grooves at the bottom of the radiator; one or more radiator fans are arranged in the lamp and directly radiate heat of the LED heat radiation strips which are exposed out of the radiator. Simultaneously, the bottom shapes of the radiator are set to be a plane shape, an arc-shaped polyhedron shape, a semi-circular polyhedron shape, or a hemispherical polyhedron shape according to different light distribution curves of various lamps, so that effects of the light distribution curves of the lamp are achieved. By using the LED heat radiation strips, the LED lamp is convenient to maintain; and by using a built driving heat radiation structure, the heat radiation effect is improved, so that the effective service life of the LED is guaranteed.

The invention discloses a portable temporary bridge for connecting a tower crane and a building. The portable temporary bridge comprises a structural bulk stereogram of a supporting device. A temporary bridge main keel, a temporary bridge cross rod, a front limiting hook, a rear limiter and a protective barrier are all of steel structures formed by machining plastic steel and steel plates, the position over the temporary bridge main keel is formed by seamlessly connecting two reinforcing meshes with the size of 2,000 mm * 1,000 mm, and the front limiting hook is arranged in front of the temporary bridge main keel. and is welded to the middle of the front section of the main keel together with the temporary bridge main keel, the rear limiter is arranged behind the temporary bridge main keel, and is welded to the middle lower portion of the rear section of the main keel together with the temporary bridge main keel, and the two portions above the temporary bridge main keel are both provided with protective barriers, are also steel structure components and comprise transverse rods and vertical rods. The invention further discloses a construction process of the temporary bridge main keel and the protective barrier in the supporting device, a welding machining process and matters needing attention among all steel structures of the supporting device, rust-proof treatment after weldingis completed, and material compositions of steel structural members and the steel bar meshes.

The invention discloses agricultural product fresh-keeping temperature monitoring equipment based on a sensor, the agricultural product fresh-keeping temperature monitoring equipment comprises a temperature monitoring system and a monitoring frame, the temperature monitoring system is bidirectionally connected with a central processing module, and the invention relates to the technical field of agricultural product fresh-keeping. According to the agricultural product fresh-keeping temperature monitoring equipment based on the sensor, the temperature sensor is installed on the conveyor belt with the changeable position, so that the temperature sensor can continuously conduct movable temperature monitoring, more accurate temperature identification is achieved in the mode that the monitoring area is increased, the effective service life of a refrigerating unit is ensured, and the storage cost is reduced; and the temperature values monitored by the temperature sensors are compared in a difference value comparison mode, whether the temperature in the refrigeration house is constant or not is judged according to the fluctuation quantity of the values monitored by the temperature sensors, then the fresh-keeping quality of the agricultural products during storage is guaranteed, and three sets of temperature sensors are arranged, and the occurrence of monitoring errors can be effectively reduced.