84 results about "Vapor lock" patented technology

Methods and systems are provided for cooling an object with a cryogen having a critical point defined by a critical-point pressure and a critical-point temperature. A pressure of the cryogen is raised above a pressure value determined to provide the cryogen at a reduced molar volume that prevents vapor lock. Thereafter, the cryogen is placed in thermal communication with the object to increase a temperature of the cryogen along a thermodynamic path that maintains the pressure greater than the critical-point pressure for a duration that the cryogen and object are in thermal communication.

A programmed microcontroller based sump pump system includes multiple pumps that can be employed with one as a primary pump and one as a back-up, or can be employed in combination to increase the discharge rate. The microcontroller monitors the back-up battery condition, and computes and displays the battery life; monitors the system for clogs or vapor locks in the discharge piping; switches to an emergency periodic pumping mode of operation, when needed; and notifies the user by phone or e-mail of a system malfunction.

A method and system utilizing a mobile cleaning unit for providing cleaning of heat exchanger tube bundles. The mobile cleaning unit utilizes a pressurized seal positioned about top door of the cleaning enclosure to provide a fluid and vapor lock of the cleaning enclosure. An oxygen purging system of the cleaning enclosure, the cleaning fluid reservoir, and the control panels provides additional safety. The mobile cleaning unit can use cleaning fluid produced at the facility site and return the cleaning fluid to the facility site for reprocessing after the heat exchanger tube bundles are cleaned.

The invention provides a tobacco stalk pre-processing method and tobacco stalk pre-processing equipment which can shorten the water permeability time of the tobacco stalk, ensure consistent moisture of the soaked tobacco stalk, save the storage process of the moistening of the tobacco stalk and simplify the process flow. The method comprises the following steps of: feeding a tobacco stalk material into a screw conveyer which is filled with steam and keeps proper pressure and proper temperature; continuously feeding the tobacco stalk material into the screw conveyer through a feeding vapor lock; continuously discharging the tobacco stalk material through a discharging vapor lock; and increasing the moisture and the temperature of the tobacco stalk to meet the requirements of the stalk pressing and cutting process on the discharging temperature and the moisture. The equipment comprises a bearing screw conveyer with a steam inlet and a water drainage port; a feed port and a discharge port of the screw conveyer are provided with the feeding vapor lock and the discharging vapor lock respectively; and the feeding vapor lock is provided with a water replenishing port. The water permeability of the tobacco stalk is improved by increasing the pressure and the temperature of the moistening environment of the tobacco stalk, so that the method and the equipment shorten the water permeability time of the tobacco stalks, quickly realize the pre-processing effect of the moistening of the tobacco stalk, save the storage process of the moistening of the tobacco stalk and greatly simplify the process flow of the stalk processing.

A filter vent device is provided for a cabinet dryer having a steam generator for supplying steam to the drying chamber. A water reservoir supplies water to the steam generator via a water hose. The filter vent device is disposed in the water reservoir or tank and includes a water passage with a filter to prevent foreign particles or matter from passing into the hose, thereby preventing clogging. The filter vent device also includes an air passage to allow the escape of air from the water hose, thereby preventing vapor lock. The filter vent device is removably mounted in the water reservoir or tank and has a one-piece construction.

The invention discloses an EPS package foam forming technology. The EPS package foam forming technology comprises the following steps of first, carrying out material selection; second, carrying out pre-foaming; third, carrying out fluidization; fourth, carrying out curing; fifth, carrying out forming; six, carrying out packaging; and seventh, obtaining a finished product. According to the EPS package foam forming technology, a mold designed according to the technology is used for mold forming work, and according to a traditional mold, because of a vapor lock, a vapor lock hole is prone to being blocked when ultrafine raw materials are in use; the smooth finish of the appearance of a product is guaranteed; during demolding work after forming is completed, air blowing and an ejector rod areused in cooperation, a water-free demolding technology without the vapor lock is adopted, at the moment of demolding, air blowing is carried out on a lower mold to enable the product to move towards an upper mold, and after the upper mold is opened to some extent, the product is sent downwards through the ejector rod of a material gun, and a blow-out valve acts at the time to blow the product outof the mold; and in this way, it can be avoided that the surface of the product is poor in flatness because of sinking after being impacted by water with a high-speed, and the process of transferringthe product to a drying room for drying is omitted.

The invention relates to a biodiesel, which is finally prepared by the processes of mixing and stirring diesel oil, solvent oil, gasoline, alkane, rapeseed oil, hogwash oil, acidated oil, palm oil, vegetable oil and animal oil, can achieve synchronous combustion and outburst, can greatly improve the power and the anti-knock property of an engine without the phenomenon of detonation, can ensure that the engine is easy to start in winter, is not easy to generate vapor lock in summer, give full play to the power, does not erode vehicle machine members in the use process, can clean and maintain the engine without disassembly and eliminate carbon deposited in the engine, prolong the service life of the engine, can be burnt more sufficiently due to the high oxygen content simultaneously with far less air (oxygen) than the common diesel oil in burning, does not generate black smoke, has low tail gas emission which is more than 40 percent lower than that of the common diesel oil, and is a high cleanliness fuel worthy of the name.

The methods and systems using supercritical fluids for cooling of objects with high thermal emissions are disclosed. The unique thermodynamic properties of supercritical fluids combined with microchannel cooling technology allow effective absorption of the waste heat and exclude “vapor lock”, “boiling crisis”, and other deficiencies of conventional two-phase liquid cooling.

Methods and systems are provided for depressurizing a fuel tank prior to refueling the fuel tank. One example method includes adjusting a latchable refueling valve to a latched open position to enable vapor flow from the fuel tank to a vapor canister at a first rate, and responsive to fuel tank pressure being higher than a first pressure threshold after a pre-determined duration at the latched open position, modifying the latchable refueling valve to an unlatched open position. The unlatched open position of the latchable refueling valve enables a second flow rate for fuel vapors, the second flow rate higher than the first flow rate at the latched open position.

The invention provides a motor-vehicle brake-fluid composition. The composition comprises: 49 wt%-59 wt% of polyalkylene glycol ether, 40 wt%-50 wt% of polyalkylene glycol ether orthoborate, 0.1 wt%-3.0 wt% of an antioxidant, 0.01 wt%-0.5 wt% of a metal deactivator, 0.1 wt%-3.0 wt% of a corrosion inhibitor, and 0.0005 wt%-0.05 wt% of an anti-foaming agent. The prepared motor-vehicle brake-fluid composition provided by the invention has no vapor lock under a high-temperature condition, and has excellent flowing performance under a low-temperature condition; and all performances of the composition meet or exceed the indexes of GB12981-2021HZY6, and the composition is capable of transmitting brake energy normally under an extremely low-temperature condition.

A vapor lock in a fuel pump can be prevented by reducing the formation of vapor within the fuel. A first group of concavities may be formed in an inner circumferential region of an intake side face of an impeller, and a second group of concavities may be formed concentrically in a region outside of the first group of concavities. A third group of concavities that communicates with the second group of concavities may be formed in a discharge side face of the impeller. The impeller is housed within a casing. A first groove that faces the first group of concavities and a second groove that faces the second group of concavities may be formed in the face of the casing that faces the intake side face of the impeller. A third groove that faces the third group of concavities may be formed in the face of the casing that faces the discharge side face of the impeller.

The column type helical spring is made from Inconal X-750 (GH4145) alloy wire. The procedures for manufacturing the spring are as following: wrapping the semi-finished product of long coil of spring:cutting the long coil to single springs; washing the springs; carrying out the solid solution heat treatment; cutting end and adjusting the pitch, and carrying out the aging heat treatment. With the tests of rigidity and permangnet deformation in high temperature being completed, the finished springs are obtained. The device for testing rigidity of the spring includes the worktable, the electric stove and dial gauge etc. Testing indicates the performances of the spring: when the working temperature at 550 degree.C, the service life > or =25000 hr. The spring is easy to be assembled in the vapor lock.

The invention relates to a valve assembly for use in connection with carpet cleaning extraction machines and similar extraction cleaning devices. The invention allows the intake of liquid and the mixing of different liquids in a mixing chamber, such as clean water with detergent, and the discharge of a selected liquid without the formation of an air or vapor lock that would inhibit the discharge of the selected liquid. In particular, the invention prevents the formation of a vapor lock when water is being drawn into a chamber that would prevent the subsequent discharge or spraying of the liquid.

The invention discloses an oil well pump controlled by two valves. The oil well pump comprises a pump head, a pump cylinder and a plunger cylinder. The pump head is fixed at one end of the pump cylinder; the plunger cylinder is fixed at the other end of the pump cylinder, and a part of the plunger cylinder extends to the interior of the pump cylinder; a plunger rod is movably arranged in the plunger cylinder; a travelling valve is further fixed in the pump cylinder and arranged between the plunger cylinder and the pump head; the plunger rod extends to the interior of the pump cylinder through the interior of the plunger cylinder and penetrates through the travelling valve; and a fixed valve and a travelling bonnet are arranged on the plunger rod respectively, the travelling bonnet is matched with the travelling valve, and the fixed vale is arranged in the plunger cylinder. By means of the oil well pump, the problems of the vapor lock and the start and stop lag of the oil well pump and a fixed valve ball are solved effectively, and the pump efficiency and the mechanical extraction efficiency of thickened oil pumping are improved.

The invention is suitable for the professional technical field of a million kilowatt level pressurized water rector nuclear power station and provides a method and a device for preventing a turbine control system of the nuclear power station from generating disturbance. The method comprises the steps of detecting the maximum acceleration of a rotor of the turbine in the nuclear power station when a power grid is subjected to a transient fault; setting the acceleration limitation of a high cylinder cutoff valve of the turbine in the nuclear power station to be larger than or equal to the maximum acceleration of the rotor of the turbine in the nuclear power station when the power grid is subjected to the transient fault; limiting a switch of the high cylinder cutoff valve of the turbine according to the acceleration of the high cylinder cutoff valve of the turbine in the nuclear power station. According to the method and the device for preventing the turbine control system of the nuclear system from generating disturbance, the high cylinder cutoff valve of the turbine is prevented from being subjected to the turbine locking phenomenon during the transient fault of the power grid.

The invention discloses a drain-off device for preventing generation of steam locking favorably. The drain-off device comprises a left valve deck and a right valve deck. A condensate water accommodation chamber is arranged between the left valve deck and the right valve deck; an inlet tube and an outlet tube are arranged on the left valve deck and the right valve deck; a floating ball is arranged in the condensate water accommodation chamber. The drain-off device also comprises an emptier. The emptier comprises a thermal static metal piece, a sealing ball and a steam locking discharging runner; the front end and the back end of the steam locking discharging runner are connected with the condensate water accommodation chamber and the outlet tube respectively; the sealing ball is fixed on the thermal static metal piece, and directly faces the front end of the steam locking discharging runner; the section of the thermal static metal piece is a diamond; the sealing ball is positioned in the apex angle of the diamond. By applying the drain-off device, automatic discharging of non-condensable gas can be realized, and the service life is long.