52results about How to "Increase guarantee rate" patented technology

The invention relates to a building material cement concrete curing agent which comprises the following components by weight percent: 10 to 20 percent of sodium silicate, 2 to 6 percent of urea, 1 to 3 percent of triethanolamine, 0.2 to 5 percent of sodium fluosilicate, and the rest of water. The total weight of the components is 100 percent. The curing agent can prevent the surface of the concrete from being dried too early, reduce concrete shrinkage and cracking, achieve the ideal effect of improving the appearance and the internal quality of the concrete, and can save the building cost.

The invention discloses a solar energy-soil source heat pump seasonal balance heating system comprising a solar energy heat collector, a water tank and a solar energy heating heat-exchange coil pipe, wherein a ground source heat-pump heat-exchange coil pipe is arranged in the water tank and communicated with a plate heat exchanger by a second circulation pipeline; a second water pump, a second water pump, a first constant pressure tank and a magnetic valve are arranged on the second circulation pipeline; the plate heat exchanger is communicated with a heat pump assembly by a third circulation pipeline; a third water pump, a third constant pressure tank and a magnetic valve are arranged on the third circulation pipeline; the plate heat exchanger is communicated with an underground burying pipe by a fourth circulation pipeline; the underground burying pipe is buried underground and is provided with an underground insulating device; and a fourth water pump, a second constant pressure tank and a magnetic valve are arranged on the fourth circulation pipeline. The solar energy-soil source heat pump seasonal balance heating system can store redundant heat generated by a summer solar energy heat collecting system in winter to use, effectively save energy sources, increase the use efficiency of solar energy and solve the detects of the traditional earth source heat pump.

The invention discloses an aero-engine baseline calculation method, an aero-engine condition monitoring method and an aero-engine condition monitoring system. The aero-engine baseline calculation method includes: analyzing cruising messages from an aero-engine to acquire flight data of the aero-engine; based on the flight data, establishing an aero-engine baseline model by partial least squares regression; based on the aero-engine baseline model, calculating a baseline value of the aero-engine. The aero-engine condition monitoring method includes: calculating continuous measurement values of aero-engine condition parameters and a baseline value of the aero-engine to form a measurement value deviation sequence; subjecting deviations in the deviation sequence to smoothing and warning in order. The aero-engine condition monitoring system comprises a user terminal, a database server, an application server, and a calculation engine server. The aero-engine baseline calculation method, the aero-engine condition monitoring method and the aero-engine condition monitoring system have the advantages that the baseline of the aero-engine can be mined and aero-engine condition monitoring can be achieved.

The invention discloses an assembly-type composite tube sea-water sea-sand concrete bridge pier. The structure of the bridge pier is composed of multiple composite tube sea-water sea-sand concrete column segments (100) which can be stacked, and the composite tube sea-water sea-sand concrete column segments (100) are connected into an entirety through back-tension prestressing force. The assembly-type composite tube sea-water sea-sand concrete bridge pier is characterized in that the composite tube sea-water sea-sand concrete bridge pier column segments are formed by composite tubes (1), sea-water sea-sand concrete (2), corrugated pipes (3), prestressing ribs (4) and anti-shear ribs (7), one or more pairs of protruding ribs (6) and grooves (5) are arranged between seams of every two composite tube sea-water sea-sand concrete bridge pier column segments, and the protruding ribs (6) and the grooves (5) are glued through a cementing material; each composite tube sea-water sea-sand concretebridge pier column segment (100) is provided with the corresponding corrugated pipe (3) in the height direction, and one or more prestressing ribs (4) penetrate through the corrugated pipes (3) of each column segment. The assembly-type composite tube sea-water sea-sand concrete bridge pier has the advantages that the bridge pier is good in durability, high in bearing capacity and good in corrosion resistance, the materials are easy to take, and the bridge pier is beneficial to sustainable development; meanwhile, the structure of the assembly-type composite tube sea-water sea-sand concrete bridge pier has the advantages that the structure can be prefabricated and transported in a large scale, is convenient to mount, short in construction period, low in energy consumption and little in environmental pollution, and can be suitable for marine engineering structural construction.

The invention relates to clean energy heating, in particular to a solar energy and air energy combined heating system. The solar energy and air energy combined heating system comprises an external heat preservation system, a light transmission system, a heat collection system, an air source heat pump, a heat storage system, a control system, the heating system and the like. The solar heat collection system, the air energy heat pump and the heat storage system are constructed, when the sun shines, the external heat preservation system is started, thesolar radiation obtained by direction incidence and scattering from the sky and reflection froma reflector and the ground can beabsorbed by the heat collection system and heat storage materials and stored in the heat storage system, and at night or the moment without sunshine,the external heat preservation system is stoppedaccording to the situation, so that the heat loss of the heat collection system and the heat storage system is reduced to the maximum extent, and air energy is used in an assisted mannerwhen solar energy is insufficient. The system is high in heat collection and storage efficiency, low in unit effective heat supply investment, good in economic and social benefit, capable of supplying heat to agricultural, industrial and commercial fields all year round, capable of supplying heat to buildings in winter, and capable of replacing fossil energy in a large scale, energy-saving and environment-friendly manner.

A technology of blocking the floating alga and similar floating contaminations in a water body by a gas curtain consists of a low pressure gas supply pipeline system, a pipe branch interface and a millipore aeration pipe branch and is arranged about 2m under the water to form a 'curtain' shaped gas-water flow in the water body by zonal aeration to cut off the wind-generated laminar flow of lake water so as to block the floating alga and the similar floating contaminations. The technology can build an invisible (obstacle-free) water body floating contamination blocking protection line used for the blocking, the stream guidance and the enrichment of the contaminations such as floating alga, etc. in an inland low flow speed water body and the construction scale of the technology can reach 10km; wherein, the running energy consumption is less than 20kw. The technology is not affected by wind, wave and ships with a service life of over 10 years.

The invention relates to a water hammer protection device for a long-distance pumping water supply system. Local high points exist in a water delivery pipeline, and one local high point is connected with the water hammer protection device through a service valve; the water hammer protection device comprises a compressed air tank, pressure reducing valves, an air valve, gas transmission pipelines and solenoid valves; the water hammer protection device is provided with ventilation channels connected with the compressed air tank, the ventilation channels are formed by connecting the pressure reducing valves, the gas transmission pipelines and the solenoid valves A in sequence and connected with the air valve through the solenoid valve B. In the hydraulic transition process, when the pressure in water delivery pipeline is smaller than set pressure at outlets of the pressure reducing valves, compressed air is injected into the pipeline, water hammer damage is effectively inhibited in time, and compared with a pressure regulating tower and an air tank, the water hammer protection device is low in cost; compared with the air valve, the minimum pressure of the installation position of the device is increased, and the water hammer protection effect is good; an air injection protection long-distance pumping water supply system water hammer is high in guarantee rate, safer and more efficient.

The invention provides a solar heating system based on dissipation-reduction optimization and a control system of the solar heating system. The solar heating system comprises a solar heat collector, a heat storing water tank, an indoor heat dissipater, a heat collecting circulating pump, a heat supply circulating pump, connecting pipelines, connecting valves, a digital temperature sensor, a flowmeter, a frequency converter and a controller. According to the solar heating system based on dissipation-reduction optimization and the control system of the solar heating system, optimized design is conducted on the integrated form, an operation mode and a control method of the links of solar heat collecting, heat storing, heat supplementing and heat supplying from the perspective of energy dissipation, and the common problems that the solar heating system conducts reverse heat transferring through the heat collector, control targets of supply and storage of the heat collecting volume cannot be coordinated, the heat of the heating side is transmitted reversely to the water tank, the control target of heat supply of the water tank cannot be coordinated, simultaneous operation of heat supplementing and heat storing cannot be achieved, and heat storing is ineffective in application of solar opto-thermal heating are solved. Meanwhile, the solar heating system based on dissipation-reduction optimization and the control system of the solar heating system can maximally utilize the passive heat storage characteristic of a building, the requirement for heat storing volume is reduced effectively, and the mixing loss in the heat storing water tank is effectively reduced.

The invention provides a solar energy heat supply system based on the cross season water thermal storage. A control device of the solar energy heat supply system is connected with the valve of each pipe; a solar energy refrigeration device is also connected in parallel with the solar energy heat device, the device comprises a solar energy plate and storage batteries, the solar energy plate and the storage batteries are located on the solar energy plate, the storage batteries are connected with semiconductor refrigeration chips; the semiconductor refrigeration chips are arranged on the place between a first heat exchanging device and a second heat exchanging device, a heat insulation sealing pad is arranged on the place between the second heat exchanging device and the semiconductor refrigeration chips; a blocking plate is arranged on the outer side of the first heat exchanging device; and a cross season cold storage solid is connected with the solar energy refrigeration device. According to the solar energy heat supply system based on the cross season water thermal storage, when heat supplies are transmitted cross the seasons, the solar energy can also be utilized to refrigerate, so that the functions of the device are augmented, the device is more practical, and the heat supply assurance rate of the solar energy can be increased to the largest extent.

The invention discloses a preparation method of an intelligent early-warning and temperature-resistant material. The preparation method comprises the following steps: 1, mixing silicon resin and a solvent according to the mass ratio being (10-30):(50-70); 2, adding a dispersing agent into the mixture in the step 1 and stirring, and adding temperature-changing powder and stirring uniformly to obtain coating slurry, wherein the mass ratio of the dispersing agent to the silicon resin is (90-95):(2-5), and the mass ratio of the temperature-changing powder to the silicon resin is (90-95):(1-1.5); 3, coating a silicate fiber layer with the coating slurry in the step 2, wherein the coating thickness is 2 to 20 silk, and the gluing quantity is 30 to 220 g/m<2>; and 4, performing curing treatment on the coated silicate fiber layer to obtain the intelligent early-warning and temperature-resistant material. The preparation method of the intelligent early-warning and temperature-resistant material has the following advantages of actively performing early warning, reducing skin allergy probability, improving wearing comfort, having high material internal combining firmness and facilitating postprocessing cutting to make any models.