38 results about "Pressure cycling" patented technology

The present invention provides methods of stimulating fluid production from an unconsolidated formation penetrated by a wellbore while preventing the migration of formation sand with fluids produced from the formation. The methods basically comprise the steps of injecting a liquid composition into a portion of the formation surrounding the wellbore which converts into a gel-like substance and plugs the permeability of the injected portion of the formation, but allows the injected portion to remain flexible and resist breakdown due to pressure cycling therein, creating at least one fracture in the formation extending from the wellbore through the plugged portion of the formation into an unplugged portion thereof and depositing hardenable resin composition coated proppant in the fracture and causing the resin composition to harden and consolidate the proppant into a hard permeable mass.

Sterilization methods and apparatus are effective to achieve a 6-log reduction in CFUs of industry standard bacteria and bacterial spores, i.e., B. stearothermophilus and B. subtilis spores, by subjecting sterilizable materials to a chemical additive-containing carbon dioxide sterilant fluid at or near its supercritical pressure and temperature conditions. Most preferably, the chemical additive-containing supercritical carbon dioxide sterilant fluid is agitated during sterilization, e.g., via mechanical agitation or via pressure cycling.

The invention relates to the technical field of a high-pressure fatigue test, and particularly relates to a complete high-pressure fatigue testing device and method in which the highest testing pressure is 70MPa. According to the high-pressure fatigue testing complete device and method provided by the invention, a large-flow high-pressure piston pump is used for directly pressurizing a test piece; after the value of a pressure reaches a set test pressure value, the pressure is kept for a certain period; a double-position three-way electromagnetic valve is switched to control an air cylinder to reset; an unloading valve is automatically reset to be switched on for unloading; when the value of the pressure reaches a lower limit pressure value, the pressure is kept for the certain period, and the pressure is increased again. With the adoption of the high-pressure fatigue test device and method provided by the invention, a pressure cycling processing of pressure increasing, pressure maintaining, pressure decreasing and pressure keeping can be completed, so that the cycle of stress when a high-pressure container or pipe piece is forced in work can be simulated; the one-time cycle is performed, and the test time is added by one until a set cycle time is reached or a test container is cracked, so as to effectively test whether the fatigue service life and the limit of the test piece can meet using requirements or not. The device has the advantages of being simple in system, high in reliability, good in simulation effect and the like.

The invention relates to a method for pickling salted eggs in a pressure circulation manner. The method comprises the following steps of: cleaning and airing fresh eggs after being tested; sorting, airing, and transferring the eggs into a pickling turnover box; putting the eggs into a sealed pressure tank, adding a saturated salt solution, and beginning to pickle in the pressure circulation manner, wherein the pickling in the pressure circulation comprises the steps of: circularly changing the air pressure inside the tank between constant pressure of 0.1Mpa and the pressure of 0.15Mpa; firstly, pressurizing to be up to 0.15Mpa and maintaining for 10min; and decompressing to be up to the constant pressure of 0.1Mpa for 2-3min, and then maintaining the constant pressure for 20min, so as to finish a regular cycle. The method disclosed by the invention has the advantages of simplicity and reliability; the conventional formulation, and new pressure processing devices and technologies are adopted; the original devices in a factory are fully utilized; a production line with automatic operation can be formed; the pickling period is shortened from 15-40 days to 3-4 days; the product quality is ensured; the dispensing quantity of salt is reduced; picking feed liquid can be reused for 5-6 times after fabrication treatment; and the salt can be saved, and the environmental pollution is also avoided.

The systems and techniques of the present invention can also synergistically utilize mechanical disruption processes with the use of high hydrostatic pressure extraction, such as pressure cycling extraction techniques to achieve high yield of difficult to extract sample constituents without generating high shear stress or high temperatures.

The invention relates to a rupture disk fatigue tester for 400MPa gas cylinders, which is used for testing the durability of the rupture disks. The tester comprises a control system and a testing system, wherein the control system is used for controlling the testing system to carry out test and the testing system comprises a drive loop, a first high-pressure loop and a second high-pressure loop. The tester realizes regulating the controlled cycling pressure, cyclic frequency, pressure holding time and continuous pressure cycling by utilizing the control system to control the reducing valve, so that the data are accurately processed, thus improving the reliability of the whole system, ensuring stable work and reducing the maintenance work.

To prevent formation of entrapped underfill material between solder balls and bonding bumps, fast temperature ramping is employed during a chi assembly after application of an underfill material prior to bonding. Voids formed within the underfill material are subsequently removed by curing the underfill material in a pressurized environment. Temperature cycling on the underfill material is limited during the bonding process in order to maintain viscosity of the underfill material prior to the cure process in the pressurized environment. Further, the underfill material is subjected to the pressurized environment until the cure process is complete to prevent re-formation of voids. The cure process can be a constant temperature or a multi-temperature process including temperature ramping. Further, the cure process can be a constant pressure process or a pressure cycling process that accelerates removal of the voids.

Provided is a pressure-cycling type of extraction device comprising: an extraction unit for accommodating and extracting an extraction target substance; a compression unit for increasing the pressure inside the extraction unit; and a decompression unit for decreasing the pressure inside the extraction unit; wherein the pressure inside the extraction unit is increased and decreased by alternately operating the compression unit and the decompression unit, and the extraction unit comprises a bubbling nozzle for supplying bubbles into the extraction target substance. Further provided is a pressure-cycling type of extraction method in which a compression process and a decompression process are carried out alternately, and compositions produced by the method. The extraction device and method allow low temperature extraction, permit outstanding extraction efficiency and can prevent colour changes, olfactory changes and thermal denaturation of the extraction target substance.

The invention relates to a container pressure-circulation testing device and method, which belong to the fields of an inspecting-equipment technology and a control technology. The container pressure-circulation testing device consists of five pipeline systems, wherein the five pipeline systems are mutually associated, and a first pipeline system is sequentially communicated with a fluid-storing device, a fluid pump, a pressure display, a first multi-directional valve, a second multi-directional valve, a first high-pressure filter, a first pressure sensor and a first tested container; a secondpipeline system extends out from a multi-way part between the first multi-directional valve and the second multi-directional valve in the first pipeline system and is sequentially communicated with athird multi-directional valve, a second high-pressure filter, a second pressure sensor and a second tested container; a third pipeline system extends out from the second multi-directional valve and is sequentially communicated with a first pressure-releasing valve and the fluid-storing device; a fourth pipeline system extends out from the third multi-directional valve and is sequentially communicated with a second pressure-releasing valve and the fluid-storing device; and a fifth pipeline system extends out from the first multi-directional valve and is communicated with the fluid-storing device. The container pressure-circulation testing device and method have the beneficial effects that the service efficiency of a pump and a motor is improved, and energy is saved.

A fluid supply system adapted for vacuum and pressure cycling of fluid, including a transfer vessel adapted to supply a process canister with fluid drawn from a bulk canister under a vacuum, wherein delivery of fluid from the transfer vessel to the process canister is accomplished with positive pressure. A method is also disclosed of delivering fluid, including drawing fluid under vacuum from a bulk canister and pressurizing the transfer vessel to effect dispensing of the fluid into a process canister for delivery to a location of use.

The invention relates to a skid-mounted device for testing lives of small-bore gauge valves under high-temperature and high-pressure conditions. The device comprises a rack, a test platform, a heating and pressure circulating system, a test executing mechanism and a control system, wherein the heating and pressure circulating system comprises a water storage tank, a circulating pump, a condensate water tank, valves and a steam reaction kettle; the test executing mechanism comprises a servo motor and a lifting device; the control system comprises a human-computer interaction interface as well as a data acquisition, transmission and processing module. The device is simple in structure, small in occupied area, high in adaptability to fields and higher in automation capability, the problem of high-temperature and high-pressure medium sources is effectively solved, life test requirements of the small-bore gauge valves under different pressure and temperature conditions are met, production and usage costs of a test system are reduced, besides, the accuracy of test data is improved, and test work can be conducted through remote control, so that the interaction capability of the test equipment data is further improved.

The invention relates to an energy-saving high-temperature industrial equipment cooling device which comprises high-temperature industrial equipment and a cooling water tower. A water outlet of the high-temperature industrial equipment is connected with a first water inlet of a mixing water tank through the cooling water tower, a first water outlet of the mixing water tank is connected with a water inlet of an industrial water chiller through a refrigeration circulating pump, a water outlet of the industrial water chiller is connected with a second water inlet of the mixing water tank, a second water outlet of the mixing water tank is connected with a water inlet of the high-temperature industrial equipment through a pressure circulating pump, and a three-way proportioning valve is parallelly connected between the water inlet and the water outlet of the industrial water chiller. The energy-saving high-temperature industrial equipment cooling device has the advantages that owing to addition of the cooling water tower and the three-way proportioning valve, an industrial water chiller with high refrigerating capacity is omitted, and the service lives of the industrial water chiller, a water pump and even the high-temperature industrial equipment are prolonged.

The invention provides a hydrogen circulation testing system of a fully-automatic high-pressure hydrogen cylinder and a testing method. The system comprises a temperature tank, a high-pressure container and a tested hydrogen cylinder, wherein the high-pressure container is placed inside the temperature tank; the tested hydrogen cylinder is placed inside the high-pressure container; the tested hydrogen cylinder is connected with a hydrogen pressure unit; a liquid inlet and a liquid outlet are formed in the high-pressure container; the high-pressure container is connected with a liquid pressurecirculation unit through the liquid inlet and the liquid outlet; and pressure circulation testing on the tested hydrogen cylinder is achieved according to pressure difference change of hydrogen insidethe tested hydrogen cylinder and liquid outside of the tested hydrogen cylinder. By adopting the system, hydrogen inside the high-pressure hydrogen cylinder is pressurized, liquid pressure circulation is exerted outside the hydrogen cylinder, pressure circulation on the high-pressure hydrogen cylinder is implemented according to the pressure difference change of the hydrogen inside the tested hydrogen cylinder and the liquid outside of the tested hydrogen cylinder, and the pressure circulation testing on the high-pressure hydrogen cylinder at different temperature is also implemented, so thatthe testing cost is reduced, and the testing security is improved.

The invention discloses a kind of high power density extract electric heating element wire insulation seal device belongs to heating element insulation seal technology. Setting the inner cutting ferrule in the seal cutting ferrule, clamping screw into the cutting ferrule, compressing the inner cutting ferrule, the high-temperature insulation lead cross the inner cutting ferrule , it contacts tightly with the compressed deformation inner cutting ferrule; the cover of the heater seal link with the seal cutting ferrule. The invention uses the assembly structure composed of compress nuts, PTFE inner cutting ferrule and the seal cutting ferrule, it has overcame the shortage that the seal insulation end ages of the resin, it is easy to crack, impact of the insulation seal in present technology, the insulation is good when the device works for a long time in high power density, it achieved the effect that the electrode insulation impedance can be always bigger than 200M after it through the pressure test, pressure cycling test, temperature cycling test, temperature test .

The invention relates to the technical field of oil field cross-linking agent production equipment, in particular to a cross-linking agent production device based on high-pressure filtration for an oil field through double-cavity stirring and graded filtration, which comprises an upper cavity, a lower cavity, a filter cartridge, a high-pressure scavenging port, a circulating stirring part, a mixing stirring part, a filter assembly and a purification net, the circulating stirring part is arranged in the upper cavity, the mixing stirring part and the purifying net are arranged in the lower cavity, and the filtering assembly is arranged in the filtering cylinder. Oil field crosslinking agent raw materials are uniformly stirred and mixed through the circulating stirring component and the mixing stirring component, cakes and impurities in the oil field crosslinking agent raw materials are separated through the filtering assembly, an oil field crosslinking agent is purified through the purifying net, and the lower cavity is inflated and sucked at regular time through the high-pressure scavenging port; the pressure circulation in the upper cavity and the lower cavity is increased and decreased, so that the filtering and purifying efficiency of the device on the oil field cross-linking agent is improved.

The invention provides an energy superposition and storage system and an energy superposition and storage method for a wind driven generator. The energy superposition and storage system comprises a working medium pressure circulation system, a transmission medium circulation system, a pressurization circulation system and an air energy circulation system; pressurizers can realize heating and pressurization in different time periods by virtue of sequenced arrangement; the pressurizers can be used for directly absorbing solar energy; a pressure guide working medium in a first-stage pressurizer is firstly heated and pressurized; after being pressurized, the pressure guide working medium is discharged to a second-stage pressurized in the next stage by virtue of a second-stage pressurization pump; a third-stage pressurizer is used for heating and pressurizing the pressure guide working medium again by absorbing the solar energy; the pressure guide working medium is discharged to a pressureguide working medium expander by using a third-stage pressurizing device in the next stage; and subsequently the pressure guide working medium exchanges heat with a transmission medium inside a heat exchange pipeline inside the pressure guide working medium expander so as to generate saturated air. By adopting the energy superposition and storage system and the energy superposition and storage method for the wind driven generator provided by the invention, random wind energy and solar radiant heat energy are pressurized and stored stage by stage by virtue of a plurality of pressurizers which are arranged in sequence, so the utilization efficiency of energy is improved.

The invention relates to a method and a device for supplying hot water used for production and living by waste heat of a kiln. Waste heat of a roller kiln is utilized, a copper pipe network is arranged in the roller kiln, the radiation of the waste heat of the roller kiln is utilized for heating, and water enters a production and living hot water storage tower through the pressure circulation and electric circulation of the water, and then flows to demand points. According to the method and the device disclosed by the invention, the hot water used for production and living can be supplied by the waste heat of the kiln, and compared with the conventional method that a boiler is used for supplying hot water, the method disclosed by the invention saves energy, the production cost is reduced, and by computation according to the fact that 1 ton of porcelain for daily use is produced per year, 1,880,000 yuan can be saved.