66results about How to "No freezing" patented technology

A decorative heat-preserved wall board with solar and air heat collection is provided, which comprises a back board, a panel, a rim and an inner cavity. The back board is a shallow box-like heat-preservation sandwich board, an air inlet is provided at the lower part of the box bottom, an air outlet is provided at the upper part of the box bottom, at the air outlet, a solar fan is installed. The power supply of the fan is a solar photovoltaic power generating board at inner side at front of the panel. The panel is a flat glass. Between the panel and the back board, the rim is connected. On the rim, some concave ports for connecting are provided. In the inner cavity enclosed by the panel, back board and the rim, a corrugated heat-absorbing board is fixedly connected on the inner bottom side of the shallow box-like heat-preservation sandwich board. The outer surface of the corrugated heat-absorbing board is provided with a heat-absorbing coating. The inner wall of the corrugated heat-absorbing board is connected with heat-exchanging fins. The inside of the corrugated heat-absorbing board forms a heat-exchanging cavity, which is communicated with the air inlet and the air outlet. The invention greatly reduces the cost of the wall board integrating solar with a building, is easy to maintain, improves the service life and is easy to spread and apply in large area.

The invention provides an engine coolant concentration automatic regulating device. The engine coolant concentration automatic regulating device comprises a separation device, a concentration branch, a dilution branch and a control system; a separation membrane is arranged in the separation device and divides the space inside the separation device into two parts, namely a concentrated solution area and a solvent area; the concentrated solution area is in series connection with a trunk pipeline; the solvent area is provided with an exhaust port and a drainage port; one end of a concentration branch pipeline is connected with the exhaust port of the solvent area of the separation device, and the other end of the concentration branch pipeline is connected with a water pump; a concentration valve is arranged on the concentration branch pipeline; one end of a dilution branch pipeline is connected with a water outlet of a water storage container, and the other end of the dilution branch pipeline is connected with a coolant circulation loop; a dilution valve is arranged on the dilution branch pipeline; the control system controls the concentration valve and the dilution valve to be opened and closed according to water temperature signals of an engine, outside-car air temperature signals and LLC current concentration signals. The engine coolant concentration automatic regulating device can be used for realizing automatic regulation of engine coolant concentration according to various working conditions and service environments of vehicles.

The invention discloses a vacuum type liquid heating conveying pipeline. The vacuum type liquid heating conveying pipeline comprises a flange plate and an oil conveying pipeline. The oil conveying pipeline is in fixed sealing connection with the flange plate. The oil conveying pipeline is provided with an outer pipeline layer and an inner pipeline layer. A vacuum cavity is formed between the outerpipeline layer and the inner pipeline layer. The outer pipeline layer and the inner pipeline layer are provided with a channel for installing a heating pipe. The channel is in sealed connection withthe outer pipeline layer and the inner pipeline layer. The heating pipe is arranged in a pipeline body of the inner pipeline layer. A gear pump is arranged between a water inlet and a water outlet ofthe heating pipe. The outer pipeline layer is provided with a water tank. The water tank is internally provided with an electric heating pipe. The water inlet and the water outlet of the heating pipeare connected with the water tank. The vacuum type liquid heating conveying pipeline is provided with the heating pipe, the heating pipe can heat petroleum when the petroleum is conveyed for a long distance, the viscosity of the heated petroleum is reduced, the heating pipe in a heating cavity heats the petroleum through hot water, and compared with electric heating for directly heating the petroleum, water heating is safer.

The invention discloses magnetic bead mixed liquid. The magnetic bead mixed liquid is prepared from magnetic beads, protease, a denaturing agent, glycerinum, a buffer agent and a nucleic acid settlingagent. The invention further disclose a nucleic acid preservation method, a nucleic acid extraction reagent and a reagent kit. The components of the magnetic bead mixed liquid are pre-mixed accordingto certain proportions, corresponding volume can be taken for one time when nucleic acid extraction is conducted, the needed components can be uniformed added then, the dosage is more accurate, and operation is more simple; and the packaging cost and transportation cost can be lowered by pre-mixing the components according to the proportions. The magnetic bead mixed liquid can enable the temperature range for preserving the magnetic beads to be wider. The magnetic bead mixed liquid is adopted to serve as a nucleic acid (or carrier particles containing nucleic acid) solvent, extraction of nucleic acid can be monitored when nucleic acid is extracted, the step that a sample is added into the nucleic acid extraction reagent by using a magnetic bead method is saved, and meanwhile, the homogeneity of the concentration of nucleic acid being added among multiple holes can be guaranteed. Nucleic acid can be stably preserved by adopting the magnetic bead mixed liquid.

The invention discloses a central heating system of a solar water heater, which comprises a water tank connected with a heat collector and a sensor for testing water temperature and water amount, wherein the heat collector is connected with a plurality of non-bearing water tanks which are connected with bearing water tank through pipelines; the bottom of the bearing water tank is connected with a hot water pipe and a heating return pipe; the hot water pipe is connected with a shower head of each bath; the heating return pipe is connected with a heating strip of each heating room; the upper part of the non-bearing water tank is connected with a temperature control circulating pipe; and both the hot water pipe and the heating return pipe are communicated with the temperature control circulating pipe. The heating system is automatically controlled, safe and reliable; the outside of the bearing water tank connected with the user terminal is provided with an auxiliary heating device to ensure the stability of the water temperature; the water can be used at any moment; at the same time, the heating system avoids the process of exhausting cold water before using hot water, and saves water resource and user time.

The invention relates to a test probe for monitoring the pore water pressure in frozen soil. The probe includes a clay head, a rigid plastic pipe, a pressure sensor and an adapter. The pressure sensor is connected with the adapter, and the adapter is connected with one end of the rigid plastic pipe through a quick connector. The other end of the rigid plastic pipe is bonded to the clay head. The adapter is provided with an air vent, and a nut is arranged on the air vent. The test probe is stable, reliable and convenient to use, and can be used to monitor the change of pore water pressure in the soil freezing process so as to provide a basis for analyzing the moisture migration and ice condensation process of soil during freezing and thawing.

The invention discloses a fuel gasification and combined cooling heating and power supply system and method for an LNG power driven vessel. The fuel gasification and combined cooling heating and powersupply system comprises an LNG gasification and cooling capacity recovery unit, a main engine waste gas heat recovery unit, a low-temperature Rankine cycle unit, a power generating unit, a surplus cooling capacity recovery unit and a vessel steam, cooling capacity and power supply channel connected among the units. According to the fuel gasification and combined cooling heating and power supply system and method for the LNG power driven vessel, by means of the ingenious design, large-temperature difference heat exchanging of cold fluid and hot fluid is achieved in the LNG gasification processso that thorough gasification can be guaranteed; in the cold energy recovering process, small-temperature different heat exchanging is carried out through the cold fluid and the hot fluid so that thecold energy recovery efficiency can be improved; and the problems of freezing, low efficiency and the like of a traditional gasifier are solved through the unique circular self-evaporation design andcold energy recovering through circular secondary refrigerator. According to the fuel gasification and combined cooling heating and power supply system and method for the LNG power driven vessel, cold energy and waste heat recovery and power cycle generation of the vessel can be carried out at the same time, the cold energy and waste head recovery rate is relatively high, the safety coefficient is relatively large, and the energy conversion utilization efficiency of the LNG power driven vessel is effectively improved.

The invention relates to a gas or liquid ultrasonic purification device which comprises a shell, fiber filter pipes, a hard net pipe, an internal support body and an ultrasonic vibration element, the shell is a shell with an input port, a purification output port and a pollution discharge output port, and the fiber filter pipes are arranged in the hard net pipe in a sleeved mode to form a composite filter pipe assembly. The inner support body is provided with an installation space, the composite filter pipe assembly is sleeved and stacked in the installation space in a penetrating mode, the inner support body is sleeved with the shell, and the ultrasonic vibration element is installed on the inner support body. High-frequency ultrasonic vibration energy generated by the ultrasonic vibration element is applied to the internal support body, is fed back to the hard net pipe and then acts on the fiber filter pipes, so that the fiber filter pipes generate high-frequency ultrasonic resonance and internal molecular motion, impurities in gas or liquid do not block capillary pores of the fiber filter pipes and are prevented from being blocked and passivated, the service life is prolonged, the quality and efficiency of filtration and purification are ensured, and the replacement frequency and loss of the fiber filter pipes are reduced.

The invention provides a crude oil safety heating tank special for crude oil transportation, and relates to the technical field of oil and gas exploitation safety control. The crude oil safety heatingtank comprises an oil tank body, an oil inlet pipe, an oil outlet pipe, an oil heating structure and an internal liquid level control device, wherein the oil tank body is composed of an inner shell and an outer shell which are arranged in a sleeving manner inside and outside; the inner shell is used for storing oil; a cavity between the inner shell and the outer shell is an insulating cavity; a hot water injection pipe and a recycling pipe which extend into the insulating cavity, and a gas inlet pipe and a gas outlet pipe which extend into the inner shell are arranged on the outer shell; theend parts, positioned in the inner shell, of the gas inlet pipe and the gas outlet pipe are higher than the oil level; the end part, positioned in the inner shell, of the gas inlet pipe is connected with a gas dispersion pipe; the end part of the end, away from the gas inlet pipe, of the gas dispersion pipe is sealed; and gas dispersion small pipes are uniformly distributed at the part, positionedin oil, of the gas dispersion pipe.

The invention discloses a tunnel lining construction joint waterproof structure. A water stop strip hole way arranged along a construction joint is arranged at the position, positioned at the construction joint, in a tunnel secondary lining, a groove which is arranged along the construction joint and penetrates through the water stop strip hole way is formed in the position, positioned at the construction joint, of the external wall of the tunnel secondary lining. The water stop strip hole way is internally filled with water stop materials to form a water stop strip. The invention further discloses a waterproof method of a tunnel lining construction joint. A drainage channel for circulation of percolating water is formed between the water stop strip and the bottom of the groove, compared with an existing pre-buried type water stop structure, the percolating water can smoothly flow out from both sides of the water stop strip, and hydraulic pressure is not formed to cause invalidation ofthe water stop strip. In addition, the waterproof structure can be conveniently dismantled and replaced after the invalidation of the waterproof structure, and secondary damage is not caused to a tunnel lining.

The invention relates to a cyclone type reverse-circulation well flushing and fishing device. The device comprises a body, wherein a milling shoe is arranged at the bottom of the body; a chip removingchannel is the center channel of the body; reducing channels are uniformly distributed in the wall of the body along the peripheral direction, and openings of the reducing channels extend to the upper end face of the body; an inner rotating orifice and outer orifice are alternately arranged in the body along the peripheral direction, a certain reducing channel is connected with the inner rotatingorifice, and two reducing channels adjacent to the certain reducing channel are respectively connected with the outer orifice; a chip removing channel is communicated with the bottom end of the corresponding reducing channel through the inner rotating orifice; the outlet of the outer orifice is formed in the outer wall of the body, and the inlet of the outer orifice is formed in the bottom end ofthe corresponding reducing channel; and the included angle between the axis of the inner rotating orifice and the bottom horizontal plane of the body is 20-70 degrees, and the included angle betweenthe center line of the outer orifice and the center line of the reducing channel is 20-70 degrees. According to the cyclone type reverse-circulation well flushing and fishing device, chips at the orifice bottom can be washed without a dead angle, and the chip removing performance of the flushing device can be greatly improved.

The invention provides a floating type backwater pumping station, and relates to the technical field of tailings pond backwater pumping stations. The technical problem existing in the prior art that afloating pumping station is difficult to use due to ice on the water surface of a tailings pond is solved. The floating type backwater pumping station comprises a floating device and a water flow driving device, wherein the floating device is connected with the water flow driving device, the floating device can float on the water surface of the tailings pond, and the water flow driving device extends into the water surface of the tailings pond and can drive the water near the floating device to flow. The floating type backwater pumping station is suitable for tailings ponds in high and cold areas of metal mining industries.

The invention relates to the technical field of chemical industry production, particularly to an anti-freezing white latex capable of resisting low temperature, wherein the anti-freezing white latex comprises, by weight, 90-110 parts of polyvinyl acetate, 60-80 parts of vinyl acetate, 30-40 parts of polyvinyl alcohol, 10-15 parts of acrylic acid, 6-13 parts of butyl acrylate, 10-15 parts of ammonium persulfate, 30-40 parts of diethylene glycol dibenzoate, 15-25 parts of sodium bicarbonate, 10-15 parts of dibutyl phthalate, 0.5-3 parts of an emulsifier, and 60-80 parts of water, wherein the acrylic acid is sulfuric acid acrylic acid, and the polyvinyl alcohol is polyvinyl butanol.

The invention relates to a device which can prevent glaze ice, rim and icing freezing injury from affecting normal work of or damaging a wind speed sensor or a wind sensor used in an automatic weather station. The device consists of a heating wire, a temperature sensor and a power supply, wherein the heating wire can be arranged in a shell of the wind sensor and can be arranged outside a sensor bearing; the temperature sensor can be arranged on the heating wire or can be arranged between the heating wire and the sensor bearing; the power supply is controlled by the temperature sensor, is used for supplying power to the heating wire and has a working voltage of 36 V; and the on-off temperature of the temperature sensor is set to be between 3 and 40 DEG C.

The invention relates to a foam lift chemical agent diluents, preparation method and application thereof. The liquid phase components in the diluents comprise the following components by weight percentage: 30-50% of water, 50-70% of propylene glycol and the total weight of the liquid phase components is 100%. The solid phase dissolved matters in the diluents comprises the following components by weight percentage: 3-6 g/L of sodium molybdate, 0.1-0.3 g/L of orthophosphate and 0.2-0.4 g/L of zinc sulfate.

The invention relates to the technical field of chemical industry production, particularly to a low-temperature-resistant white latex, which comprises, by weight, 300 kg of polyvinyl acetate, 100 kg of vinyl acetate, 80 kg of polyvinyl alcohol, 30 kg of ethylene dimethacrylate, 10 kg of dibutyl phthalate, 35 kg of alkenyl ethyl methacrylate, 15 kg of sodium bicarbonate, 5 kg of an emulsifier, 20 kg of methylol acrylamide, and 55 kg of water, wherein the emulsifier is sodium tetradecylbenzene sulfonate, the polyvinyl alcohol is polyvinyl propanol, the polyvinyl alcohol is polyvinyl octanol, andthe polyvinyl alcohol is a mixture of polyvinyl propanol and polyvinyl octanol.

The invention discloses a universal industrial glue. The universal industrial glue comprises, by weight, 40-50 parts of polyvinyl alcohol, 3-5 parts of formaldehyde, 2-5 parts of hydrochloric acid, 6-9 parts of sodium hydroxide, 2 parts of a whole chain agent, 400-600 parts of water, 300-420 parts of vinyl acetate, 4-6 parts of OP-10, 36-39 parts of dibutyl phthalate and 0.2-0.8 part of potassiumpersulfate. A technology in the production process is stable, and the product does not freeze at -3 to -5 DEG C; and the production cost of the product of the invention is lower than that of industrial glue produced from 1788 type polyvinyl alcohol.