12results about How to "Prevent gasification" patented technology

The invention discloses a method for recovering dimethyl ether from dimethyl ether purge gas, and belongs to the technical field of dimethyl ether recovery, the method for recovering dimethyl ether from dimethyl ether purge gas comprises the following steps: cooling the dimethyl ether purge gas to 8-10 DEG C through heat exchange of a heat exchanger, and then discharging to obtain low-temperature purge gas, the low-temperature purge gas enters the bottom of the inner side of an absorption tower filled with composite filler and is absorbed by absorption liquid which flows from top to bottom and has the temperature of 10-15 DEG C, and enriched liquid is formed at the bottom of the absorption tower; according to the method, the composition and the adsorption temperature of the adsorption liquid are optimized, and the composite filler is modified, so that the recovery purity of the dimethyl ether is effectively improved, and the recovery rate of the dimethyl ether in the purge gas is also improved.

The present invention relates to the field of liquid level measurement technology, and specifically discloses a liquid level measuring instrument for a cryogenic container and a method of use, comprising a gas phase tube, a liquid phase tube and a liquid level gauge; the portion of the liquid phase tube extending into the cryogenic container comprises: a straight tube section, arranged in the inner tank of the cryogenic container; the straight tube section comprises an opening section with a first exhaust hole and a light tube section without an opening, and the end of the light tube section is a closed end; a drainage tube, arranged at the top of the light tube section close to the opening section, the drainage tube is connected to the light tube section; a flow guide, arranged in the drainage tube, the width of the flow guide gradually increases from bottom to top, and a drainage cavity is formed between the flow guide and the drainage tube; a sealing section, which is penetrated on the side wall of the inner tank; one end of the sealing section is connected to the opening section; a U-shaped gas sealing section, arranged in the vacuum interlayer of the cryogenic container, one end is connected to the other end of the sealing section, and the other end is connected to the heating section. The present invention can improve the accuracy and stability of the differential pressure liquid level instrument when used for liquid level measurement of a cryogenic container.

The liquid hydrogen tank is provided with: an inner tank for accommodating liquid hydrogen; an outer tank surrounding the inner tank; and a heat protection layer disposed in an inter-tank region between the inner tank and the outer tank and covering the outer wall of the inner tank. In the liquid hydrogen tank, when the inter-tank region is filled with hydrogen gas and the storage of liquid hydrogen is housed in the inner tank, the inter-tank pressure, which is the pressure of the inter-tank region, is lower than the saturated vapor of hydrogen at a predetermined temperature.

The present invention discloses a non-constant current low-temperature static mass method calibration device and a method thereof, wherein the non-constant current low-temperature static mass method calibration device comprises a low-temperature standard tank, an electronic balance, a cryogenic tank, a cryogenic storage tank, a recovery tank, a power source, a first pneumatic valve, a second pneumatic valve, a third pneumatic valve, a fourth pneumatic valve, a fifth pneumatic valve, a first quick-link valve group, a second quick-link valve group, and a meter to be tested. The non-constant current low-temperature static mass method calibration device provided by the present invention, in order to ensure the temperature of the recovered liquid, the recovered liquid first passes through a cryogenic tank for cooling, and then enters the cryogenic storage tank, thereby preventing the liquid from gasifying and also avoiding frosting of the pipeline and the outlet. In addition, the pipeline provided by the present invention adopts a vacuum pipeline, and other parts are subjected to insulation treatment to prevent liquid gas.

The invention relates to the technical field of semiconductors, in particular to a high-temperature adhesive tape for fixing a thermocouple. The high-temperature adhesive tape comprises the high-temperature-resistant base film and the high-temperature-resistant adhesive layer, the through hole is formed in the first base film section, so that a self-locking mechanism is formed when the second base film section penetrates through the through hole, a thermocouple is firmly fixed, and the temperature measurement accuracy of the thermocouple is improved. Meanwhile, the high-temperature adhesive tape in contact with the thermocouple is not provided with an adhesive material, so that gasified organic matters are prevented from polluting the internal environment of the cavity.

The invention discloses a liquid hydrogen conveying device which comprises a conveying pipe, a pressurizing part, a refrigerating part, a power part and a transmission part. The conveying pipe is composed of a conveying inner pipe and a thermal insulation outer pipe, and a vacuum thermal insulation cavity is formed between the inner pipe and the outer pipe. The refrigerating part comprises a liquid hydrogen equalizing assembly, an inner and outer connecting sleeve, a cold source sleeve, a heat source sleeve and a piston assembly which are concentrically arranged, and liquid hydrogen is pressurized and refrigerated through an inner and outer annular piston, a communicating pipe, a crankshaft and a connecting rod mechanism. The power part drives the pressurizing part and the refrigerating part through the transmission part, and stable conveying of the liquid hydrogen is guaranteed. The liquid hydrogen conveying method comprises the following steps that low-temperature conveying of liquid hydrogen is kept through the conveying pipe and the vacuum heat insulation cavity; the liquid hydrogen is pressurized and cooled through the pressurizing part and the refrigerating part; the power part drives the pressurizing part and the refrigerating part to operate through the transmission part. The liquid hydrogen conveying efficiency and stability are remarkably improved, it is ensured that liquid hydrogen is efficiently pressurized, refrigerated and stably conveyed in the liquid phase state, and good technical advantages and application prospects are achieved.

The invention belongs to the technical field of associated gas condensate recovery, and particularly relates to a skid-mounted crude oil associated gas condensate recovery system and a recovery method. The recycling system comprises a skid seat, an equipment body arranged on the skid seat, a secondary liquid separation device and a condensate liquid recycling device, the equipment body comprises a gas-liquid separation device, a liquid separation bag is arranged at one end of the equipment body, an outlet of the liquid separation bag is communicated with an air cooling device, an outlet of the air cooling device is communicated with the secondary liquid separation device, and the equipment body is communicated with an external conveying pipeline; the secondary liquid separation device is arranged at the top of the equipment body and is provided with a partition plate at the lower part. The equipment body and the secondary liquid separation device are separated by the partition plate to form two independent pressure containers, mutual pressure interference is avoided, condensate liquid is collected to a liquid storage tank in the condensate liquid recovery device and then is directly conveyed to an external conveying pipeline through a pump, closed gathering and conveying are achieved, and the energy-saving and environment-friendly effect is achieved. The problems that the associated gas condensate of skid-mounted crude oil pressurizing output equipment is difficult to recover and cannot be conveyed to an output pipeline under pressure are solved.

The present invention discloses a static mass method calibration device for ultra-low temperature liquids and a method thereof, wherein the static mass method calibration device for ultra-low temperature liquids comprises a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a meter to be tested, a cryogenic protection tank, a weighing tank, a cryogenic tank, a cryogenic storage tank, a power source, a reversing valve group, a scale, and a lifting mechanism. The static mass method calibration device for ultra-low temperature liquids provided by the present invention can avoid frost on the weighing tank mouth and its attached pipes, can also avoid gasification of cryogenic liquids in the weighing tube, and can also avoid direct contact between sensors such as scales and storage tanks, thereby ensuring the stability and accuracy of the measurement.

The utility model belongs to heat exchange technical field, specifically discloses a kind of spoiler, heat exchange device and gas water heating equipment. Spoiler includes long strip's spoiler plate, and spoiler plate is spaced apart with multiple spoiler through holes along length direction, each spoiler through hole has relatively and spaced apart first hole wall and second hole wall, each first hole wall is connected with first spoiler piece, each second hole wall is connected with second spoiler piece, and the projection of first spoiler piece and second spoiler piece corresponding to same spoiler through hole is set on spoiler plate with dislocation;The free end of adjacent two first spoiler pieces is located at the opposite sides of spoiler plate respectively, and the free end of adjacent two second spoiler pieces is located at the opposite sides of spoiler plate respectively. Heat exchange device includes heat exchange pipe and spoiler, and spoiler is inserted in heat exchange pipe. The utility model can improve the spoiler effect of spoiler, and then improve heat exchange uniformity.

This invention relates to the field of cable technology and discloses a composite cross-linked polyethylene insulated cable integrating signal and power transmission. The cable comprises, from the inside out, a composite core, an inner semi-conductive shielding layer, a composite cross-linked polyethylene insulation layer, and an outer semi-conductive shielding layer. The composite cross-linked polyethylene insulation layer is made by extruding and cross-linking raw materials containing the following parts by weight: 90-95 parts low-density polyethylene granules, 5.42-11.6 parts solid premix, and 0.7-2.0 parts liquid co-solution. The solid premix contains N,N'-m-phenylenebismaleimide and tetrabutyl titanate, and the liquid co-solution contains tetramethyltetravinylcyclotetrasiloxane and dicumyl peroxide. This invention anchors by constructing a coordination network, eliminates space charge and micropores in the insulation layer, improves withstand voltage, reduces signal attenuation, and ensures the long-term stability of the integrated power and signal transmission of the composite cable.

The invention relates to an etching device, which comprises an etching chamber, an opening and closing unit for opening and closing the etching chamber, and a locking unit for selectively constraining the opening and closing unit.

The utility model relates to the technical field of waste glue treatment, and provides a waste glue collecting mechanism which comprises a collecting tank, an oil outlet pipe, a circulating pipe and a recycling barrel. The collecting tank is arranged in the hearth and is used for collecting waste glue formed by condensation at the position close to the furnace mouth; the upper end of the oil outlet pipe is communicated with the collecting tank; the upper end of the circulation pipe is communicated with the upper end of the oil outlet pipe, and the lower end of the circulation pipe is communicated with the recycling bin. On the basis, waste rubber can be prevented from being gasified again as much as possible, the operation load of a waste gas treatment device at the rear end of the degumming sintering furnace is reduced, and enterprise economic benefits are improved. In addition, the utility model further provides a degumming sintering furnace.