10results about How to "Solve the icing" patented technology

The application discloses an exhaust pipe icing test device, system and method, and belongs to the technical field of vehicles. The device comprises a first pressure sensor, a second pressure sensor and a data processor. The first pressure sensor is located at the air inlet end of the exhaust pipe of a test vehicle, and the probe of the first pressure sensor is located inside the exhaust pipe, for monitoring the air pressure at the air inlet end. The second pressure sensor is located at the air outlet end of the exhaust pipe, and the probe of the second pressure sensor is located inside the exhaust pipe, for monitoring the air pressure at the air outlet end. The data processor is connected with the first pressure sensor and the second pressure sensor, respectively, for determining whether icing phenomenon exists in the exhaust pipe based on the air pressure at the air inlet end and the air pressure at the air outlet end. The application determines the relationship between icing phenomenon and vehicle operating state through real-time monitoring of whether icing phenomenon exists in the exhaust pipe, so as to better solve the problem of icing of the exhaust pipe of the vehicle.

The invention relates to the technical field of gas pressure reduction, in particular to a two-stage pressure reducer which comprises a valve body formed by connecting a main body and an aluminum upper cover in a threaded mode, and further comprises a gas source connecting mechanism arranged at a gas inlet in the main body and configured to be connected with an external gas source and filter entered gas; the two-stage pressure reduction mechanism is arranged in the gas source connecting mechanism and the parent body and is used for performing two-stage pressure reduction on the entering gas; the gas outlet mode of the flow meter is an OUT mode, and the flow meter is fixedly installed at the end of the main body through an adapter and is configured to display the flow of output gas; the gas flow channel is arranged in the parent body and is configured to introduce the gas subjected to two-stage pressure reduction into the flow meter and prolong the flow path of the gas in the parent body, so that the gas exchanges heat with the parent body before flowing into the flow meter; according to the gas pressure reducer, the gas flow channel is formed in the parent body, and the problem that gas is frozen when an existing gas pressure reducer works for a long time or is in a low-temperature environment is ingeniously solved.

This application discloses a crankcase ventilation pipe anti-icing device, a crankcase, and an engine. The crankcase ventilation pipe anti-icing device includes a first heating jacket and a second heating jacket, which are arranged in parallel or series. One of the first and second heating jackets is fitted outside the intake pipe of the crankcase ventilation pipe, and the other is fitted outside the exhaust pipe of the crankcase ventilation pipe, forming a heating chamber outside the intake and exhaust pipes. Fuel combustion in the engine cylinder generates a large amount of heat, some of which is carried away by the engine coolant. The coolant, after absorbing heat, has a temperature close to 100°C, making it a high-quality heat source. This high-quality heat source is supplied to the heating chamber to heat the intake and exhaust pipes of the crankcase ventilation pipe, thereby preventing icing in the intake and exhaust pipes when the ambient temperature reaches zero degrees Celsius or lower, and reducing the risk of crankcase ventilation pipe blockage.

The utility model relates to a cloth bag dust removal air pressure balance tank for aluminum particle production, which comprises an air pressure balance tank body, and is technically characterized in that an upper heating component and a lower heating component are arranged on the peripheral wall of the air pressure balance tank body at intervals; the heating assembly comprises two arc-shaped hollow clamping hoops, a bolt pair connected between the two arc-shaped hollow clamping hoops, a plurality of heating rods arranged along the upper surfaces of the arc-shaped hollow clamping hoops at intervals, cushion layers arranged on the inner arc surfaces of the arc-shaped hollow clamping hoops and heat storage media located in the arc-shaped hollow clamping hoops, and the heating rods are longitudinally inserted into the arc-shaped hollow clamping hoops from the upper surfaces of the arc-shaped hollow clamping hoops; a temperature sensor is arranged on a gas outlet pipeline of the gas pressure balance tank body, a gas supplementing pipeline is arranged on the side of the top of the gas pressure balance tank body, the outer end of the gas supplementing pipeline is connected with an outlet of a dryer, and an inlet of the dryer is connected with a nitrogen feeding pipeline. According to the utility model, the problem that the interior of the tank body is iced under the condition of extremely low temperature is solved, and the pressure regulating function is ensured, so that the normal operation of an aluminum particle production system is ensured.

The invention relates to the technical field of fluid control and testing, and discloses a wide-area flow range multi-gas online mixing system and a control method thereof, and the wide-area flow range multi-gas online mixing system comprises a first gas path channel used for conveying basic fuel gas; the second gas path channel is used for conveying inert gas; and the third gas path channel is used for conveying high-activity additive gas. Through a large-flow metering branch, a small-flow metering branch and a low-flow-resistance straight-through branch which are connected in parallel in a first gas path channel, a second gas path channel and a third gas path channel, the purpose of adapting to large-span flow change including main and auxiliary gas switching from trace gas to large gas in each path is achieved; within a large-span gas internal combustion engine fuel low calorific value range and under the condition of different gas components and proportions, pressure backward flowing or main gas extrusion can be avoided through main pipeline switching, path control and different mixing port structures, and the mixing precision is ensured.

This utility model discloses a maintenance-free apron deck, relating to the field of low-altitude airport construction technology. Its structure includes a row of decks connected side-by-side, a row of spaced supports, and water troughs installed at both ends of the deck. The supports are placed below the deck, and the deck and supports are connected by a first fastener. The water troughs are equipped with connecting plates and water-retaining grooves that overlap with the ends of the deck, and the connecting plates and water-retaining grooves are connected to the deck by a second fastener. This utility model features excellent waterproof and drainage performance, anti-slip safety, lightweight yet high strength, easy installation and maintenance of electric heat tracing systems, stable structure and convenient adjustment, a complete water guiding system, and protected cable management; overall, it improves the safety and applicability of the apron.

The utility model relates to the technical field of diesel engines, in particular to a heat preservation pipe of a breather air outlet pipe for a diesel engine, which comprises a heat preservation pipe, one side of the top of the heat preservation pipe is open, a plurality of heating blocks are fixedly connected on the inner wall of the air outlet pipe, and a heating wire is fixedly connected between the heat preservation pipe and the air outlet pipe. And a plurality of heating rods are fixedly connected to the heating wire. Through a composite heating structure composed of the heat preservation pipe arranged on the outer side of the air outlet pipe in a sleeving mode, the heating wire and the heating rod, effective control over the external environment temperature of the air outlet pipe is achieved, and the problem that in the prior art, a cooling liquid circulation type heat preservation pipe cannot be heated in time in the cold start or low-temperature environment, and consequently freezing is caused is solved; the anti-freezing capability of the air outlet pipe under complex working conditions is obviously improved; and secondly, the heating block arranged on the inner wall of the gas outlet pipe can directly heat exhausted gas, and the water vapor condensation phenomenon caused by gas temperature reduction is effectively prevented.

The invention provides a differential relay valve and a drainage method thereof. The differential relay valve comprises a valve body and a drainage mechanism, the valve body is provided with a second connector used for being connected with a hand brake valve, a cavity A communicated with the second connector is formed in the valve body, and an exhaust port is formed in the lower end of the valve body. The drainage mechanism comprises a shell, a fourth piston sliding on the inner wall of the shell and a third piston arranged in the fourth piston in a sliding mode, a cavity D is formed between the upper end of the third piston and the shell, a cavity E is formed in the third piston, a second air inlet valve is formed between the third piston and the fourth piston, and a second air outlet valve is formed in the shell. A second exhaust valve is formed between the lower end of the third piston and the shell, a channel opening is formed in one side wall of the shell, and the channel opening is communicated with the exhaust port; and the cavity A is communicated with the cavity D. The differential relay valve solves the problems that the control end of the differential relay valve has no drainage capacity and is frozen when used in a low-temperature environment, and the use reliability of the differential relay valve is guaranteed.

The utility model provides an anti -icing water -saving fog -eliminating cooling tower relates to the technical field of cooling tower, wherein, first filler module includes: a plurality of first filler piece and second filler piece of alternate layering, in the first filler piece and second filler piece between first flow path is formed in the layering direction, second flow path is formed between second filler piece and first filler piece, second filler module is a plurality of filler piece layering, only forms one flow path, in the layering direction, first filler module and the tower wall inner surface between anti -icing water -saving fog -eliminating cooling tower has end isolated area, plays anti -icing and water -saving fog -eliminating function.

The invention is suitable for the technical field of low-temperature liquid storage equipment, and provides an ultralow heat transfer structure and pipeline system for an automotive LNG cylinder. The ultralow heat transfer structure comprises a supporting ring and an outer supporting neck pipe; a glass fiber reinforced plastic supporting block is arranged on the inner wall of the outer supporting neck pipe, and an inner supporting neck pipe is arranged in the outer supporting neck pipe. A glass fiber reinforced plastic supporting ring is arranged in the supporting ring, and the inner supporting neck pipe sequentially penetrates through the glass fiber reinforced plastic supporting ring and the glass fiber reinforced plastic supporting block. A first check ring and a second check ring are arranged on the inner supporting neck tube; a cover plate is arranged at the outer end of the supporting ring. Meanwhile, a pipeline system is optimized and integrated, the function of a liquid outlet pipeline is combined into a pressurizing pipeline, and only a liquid adding pipeline and a gas phase pipeline are reserved to penetrate out of a front supporting neck pipe, so that the problem of icing caused by cold accumulation of a valve distribution head is thoroughly solved. The heat leakage of the gas cylinder is effectively reduced, the heat preservation performance is improved, the pipeline layout is simplified, and the manufacturing cost is reduced.