36results about How to "Prevent cross-channeling" patented technology

The invention relates to a mixed water valve for automatically limiting flow, which belongs to the technical field of the manufacture of water heating equipment. The mixed water valve is characterizedin that a cylindrical annular upper water jacket and a cylindrical annular lower water jacket are arranged in a valve body; a mixed water cavity of the annular water jackets is provided with an upperpiston and a lower piston with a seal ring; the lower side of the lower piston is provided with a thermal bulb device with mechanical thrust; the lower side of the thermal bulb device is provided with a return compression spring; the thermal bulb device can drive the pistons to move up and down through a temperature controlled displacement part; and a water inlet pressure limiting valve is arranged in a hot and cold water inlet of the mixed water valve, and comprises a balanced cover, a balanced sliding sleeve, a balanced piston rod and a balanced compression spring.

The invention provides a fuel cell bipolar plate and an electric stack. The fuel cell bipolar plate comprises an anode reactant inlet and a cathode reactant outlet arranged on the first side of the bipolar plate, an anode reactant outlet and a cathode reactant inlet arranged on the second side of the bipolar plate, a coolant inlet arranged on the third side of the bipolar plate and a coolant outlet arranged on the fourth or third side of the bipolar plate. An anode reactant channel and a cathode reactant channel extend in the direction from the first side to the second side. The coolant channel includes a plurality of coolant sub-channels communicating with each other. The coolant sub-channels extend in the direction from the third side to the fourth side, wherein the flow directions of the coolant in the two adjacent coolant sub-channels are opposite. The area of the reactant inlet and outlet can be increased to prevent the coolant and the reactant from channeling each other, the length-width ratio of the bipolar plate can be adjusted to improve the mechanical strength of the bipolar plate, and the temperature gradient in the flow direction of the reactant can be realized and thusthe water-heat balance in the fuel cell can be realized.

The invention relates to the technical field of gas turbines, and discloses an ignition-supplementing combustion chamber and a gas turbine system. The ignition-supplementing combustion chamber comprises a combustion chamber shell, a flame barrel, a fuel nozzle and an igniter, wherein the combustion chamber shell is arranged in an exhaust flue behind a gas turbine, the flame barrel is located in the combustion chamber shell and comprises a main combustion region and an intermediate region which are sequentially arranged from the front end to the rear end, the fuel nozzle is arranged at the front end of the flame barrel, and the igniter is arranged on the position, opposite to the main combustion region, of the side wall of the flame barrel. The ignition-supplementing combustion chamber is arranged in the exhaust flue of the gas turbine, so that the exhaust temperature of the gas turbine system can be remarkably improved under various working conditions, the thermoelectric ratio can be effectively improved, and the theoretical adjusting range can reach 100%; and therefore, the thermoelectric ratio adjusting range of a hot and cold electric distribution type energy system based on thegas turbine can be optimized.

The present invention provides a fuel cell bipolar plate and stack, comprising: an anode reactant inlet and a cathode reactant outlet located on the first side of the bipolar plate, an anode reactant outlet located on the second side of the bipolar plate and The cathode reactant inlet, the coolant inlet on the third side of the bipolar plate, the coolant outlet on the fourth or third side of the bipolar plate; the anode reactant channel and the cathode reactant channel on the first side to the second Extending in the direction of the two sides, the cooling liquid channel includes a plurality of interconnected cooling liquid sub-channels, the cooling liquid sub-channel extends from the third side to the fourth side, wherein, in the two adjacent cooling liquid sub-channels The flow direction of the cooling liquid is opposite, which can not only increase the area of ​​the reactant inlet and outlet, prevent the cooling liquid and the reactant from crossing each other, but also help to adjust the length-width ratio of the bipolar plate, improve the mechanical strength of the bipolar plate, and realize the The temperature gradient in the flow direction of the reactants realizes the hydrothermal balance in the fuel cell.

The invention provides a test method and device for half cell of fluid bed electrode direct carbon fuel cell. The method comprises the following steps: firstly, arranging a current collector and the mixture of carbon fuel and catalyst granules in a half cell; secondly, fixing a porous plate in a preset position, and sequentially adding an auxiliary electrode, a reference electrode and carbonate; then, introducing nitrogen gas into the half cell, heating the nitrogen gas to a preset reaction temperature, regulating the flow of the nitrogen gas, and introducing oxygen gas and carbon dioxide into the reference electrode to balance the gas; and finally, connecting to an external circuit to start experiment. The device for realizing the testing method is a half-cell reaction device and comprises a half-cell reactor and a gas preheater, two electric heating devices are respectively used for carrying out temperature control on the half-cell reactor and the gas preheater, and a rotatable support structure is used for supporting and fixing the half-cell reaction device and the electric heating devices and realizing the dumpage of molten carbonate in the half cell. By making full use of theadvantages of the fluid bed electrode and the direct carbon fuel cell, the performance of the cell can be improved.

The invention discloses a power supply system for a miniature combined regenerative fuel cell. The power supply system is formed by compactly pressing a proton exchange membrane which includes a plurality of membrane electrode units and serves as a dual-function membrane electrode assembly for both electrolyzation and power generation, a bottom box which is filled with hydrogen-storage materials and electrolytic water, and taken as the hydrogen storage and the water supply, a base plate with air holes, a pole plate and a top cover. The power supply system can automatically absorb oxygen as anoxidant from the air. The membrane electrode units are connected in series in a certain order, and thereby realizing the cycle operation of electrolyzation and discharge on the same membrane. Therefore, the equipment structure is simplified and the size and the weight are reduced. The power supply system has the advantages of good cycle operation performance and stable output power, and provides agood development for the application of the miniature fuel cells in the aspect of the portable electronic products.

The invention discloses a manufacturing technology of a flame-retardant breathing unit for ships. A manufacturing technology of a flame-retardant core layer of a flame-retardant assembly comprises operation steps as follows: A) the diameter of the flame-retardant core layer is determined according to the requirement of the ventilation volume of a pipeline; B) the flame-retardant core layer is manufactured as follows: 1) wavy mesh belts are manufactured by the aid of a mold; 2) flat-plate-shaped mesh belts are manufactured by the aid of a mold; 3) one wavy mesh belt and one flat-plate-shaped mesh belt are closely wound to form one core layer and cannot be loosened, and the surface of the core layer is flat, smooth and free of burrs; sizes of pores in the core layers of the flame-retardant core layer are completely uniform and consistent, and blockage is avoided; 4) the two core layers are combined into the flame-retardant core layer, and a runner in one core layer and a runner in the other core layer are arranged to form an angle; 5) all the pores of the flame-retardant core layer are required to be unblocked. With the technology, a breathing accessory of an oil compartment has a breathing function and a flame-retardant function, the pressure in the oil compartment is kept in a certain range in usual, and the oil compartment is protected.

The invention discloses a cement-dispersing retarder for a high-temperature-resistant oil well and a preparation method of the retarder. The cement-dispersing retarder comprises three structure units, namely sodium p-styrenesulfonate, methacrylic acid-2-hydroxyl ethyl ester and itaconic acid, and the viscosity-average molecular weight is 30000-50000. The preparation method comprises the following steps of (1) respectively dissolving sodium p-styrenesulfonate, methacrylic acid-2-hydroxyl ethyl ester and itaconic acid in deionized water, mixing and adjusting pH to be neutral; (2) introducing nitrogen to remove oxygen, reacting for 4-6 hours in water bath with the temperature of 50-70 DEG C based on potassium persulfate as an initiating agent; and (3) cooling obtained slightly-viscous solution, purifying, drying and grinding, thereby obtaining the cement-dispersing retarder for the high-temperature-resistant oil well. The cement-dispersing retarder disclosed by the invention has the advantages that the thickening time can be effectively prolonged under the high-temperature condition, the right-angled thickening phenomenon is obvious, the compatibility with other oil-well cement admixtures is good, the strength of cement stone can also be rapidly developed under the low-temperature condition, the preparation method is reliable in principle and simple to operate and has wide market prospect.

The invention relates to a torch ignition device, and in particular discloses a torch deflagration ignition safety system. The torch deflagration ignition safety system includes instrument air pipes and coke oven gas pipes respectively connected to the mixer through pipes, and is characterized in that valve A, filter A, valve B, valve A, filter A, valve B, Pressure regulating valve A and one-way valve A, the coke oven gas pipe connected to the mixer are provided with valve E, filter B, valve D, valve C, pressure regulating valve B and one-way valve B, valve A and valve The pipeline between B is communicated with a short connection pipe, and a valve F is installed on the short connection pipe. The invention is simple in structure, easy to use, reasonable in design, flexible in application, can accurately control the gas composition of the mixer, and effectively prevents instrument air and coke oven gas from crossing each other, ensures safe use, and is suitable for wide popularization and application.

The invention relates to a marine tank ventilation system. The first ventilation box and the second ventilation box are both arranged in the deck cabin of the fore floor of the ship. The partition plate of the cavity, the first lubricating oil vent pipe, the second lubricating oil vent pipe and the first engine inner cavity vent pipe are connected with the upper cavity of the first vent box provided with the first vent port, and the first fuel vent pipe is connected with the first vent box. The lower chamber of the vent box with the second vent is connected, the third oil vent pipe, the fourth oil vent pipe and the second engine inner cavity vent pipe are connected to the upper chamber of the second vent box with the third vent port The cavity is connected, and the second fuel ventilation pipe is connected with the lower cavity of the second ventilation box provided with the fourth ventilation port. The invention can centrally arrange the venting outlet of the ship's tank, avoid the spread of oil in all directions, collect oil and gas in a concentrated manner, avoid the mutual channeling of different types of oil and gas, and reduce the occupation of deck space.

The invention discloses a high and low temperature all-in-one machine, which relates to a heat exchange device. The main points of the technical solution are: including a box body, a medium inlet pipe, a medium outlet pipe, a compressor for refrigeration, and a heating device for heating , the compressor and the heating device are connected with an internal heat exchanger for heat exchange, the medium inlet pipe and the medium outlet pipe are respectively connected to the inlet and outlet ends of the internal heat exchanger, and also include a medium box and an exhaust pipe. The top of the medium box is connected with a The medium adding pipe, the medium outlet pipe is located below the medium inlet pipe, one end of the exhaust pipe is connected to the inner top of the medium outlet pipe, and the other end of the exhaust pipe is connected to the inner top of the medium inlet pipe or the media box; the exhaust pipe is provided with Control its on-off exhaust valve. Even if the closing of the exhaust valve is delayed, the medium in the high and low temperature integrated machine will not be discharged from the circulation system to cause safety hazards; by setting the floating plate, the medium in the exhaust pipe will not enter the medium inlet pipe, preventing the interaction of hot and cold media run away.

The invention discloses a novel solar water mixing valve spool. The solar water mixing valve spool comprises a housing, an adjusting handle, a ceramic moving sheet and a ceramic fixing sheet, wherein the housing is provided with a containing cavity, the adjusting handle, the ceramic moving sheet and the ceramic fixing sheet are stacked in the containing cavity sequentially, the adjusting handle is provided with an upper portion and a lower portion, the upper portion is exposed out of the housing, the lower portion is connected to the ceramic moving sheet and drives the action of the ceramic moving sheet, the ceramic moving sheet is provided with a water replenishing channel and two diversion channels, the two diversion channels are respectively located on two sides of the water replenishing channel, and a hot water outlet, a hot water inlet, a cold water outlet and a cold water inlet are arranged on the ceramic fixing sheet and are used for connecting water heater pipelines. The adjusting handle is rotated, the water replenishing channel, the cold water inlet and the hot water inlet of the ceramic moving sheet are driven to be communicated or closed, and the diversion channels, the hot water outlet, the hot water inlet, the cold water inlet and the cold water outlet of the ceramic moving sheet are driven to be communicated or closed. Other valves are not required, and then the water replenishing function of a solar water heater can be achieved.

The invention discloses a processing technology of a curl-resistance PE cast film. The cast film prepared by the technology has excellent optical performance and thickness uniformity, a very high production speed can be obtained due to adoption of a quenching roller, and the form structure of the film is improved; the curl-resistance property and flatness of the film can be effectively improved, the characteristics of good curl-resistance property, good flatness and the like are achieved, meanwhile, the advantages of high production speed, high yield and the like are achieved, large batch production is facilitated, the thickness control precision of products is high, meanwhile, the thickness uniformity is good, the transparency and glossiness are made excellent synchronously, the balance performance in all directions is outstanding, all layers of melt can be uniformly distributed after spreading on a die head, mutual mixing among all layers of materials can be prevented, the overall thickness can be monitored and adjusted, and the thickness of certain key functional layers can be monitored and adjusted.