32results about How to "Good water control effect" patented technology

The invention relates to a heavy oil displacement method using a wedged vicious slug. The method includes the steps of 1, dividing a nonhomogeneous reservoir into a plurality of layers according to water absorbing capacities, and acquiring permeability Ki of each reservoir; 2, designing three slugs, namely a pre-slug, a main wedged slug and a trailed slug, according to the permeabilities Ki and the physical properties in heavy oil and reservoirs; 3, alternately injecting the heavy oil reservoir with the pre-slug which is prepared with low-concentration B III-type poly-surfactant and which enters a high permeability layer to emulsify crude oil; 4, injecting the reservoirs with the main wedged slug for multiple rounds; and 5, injecting the trailed slug with low-concentration B III-type poly-surfactant or fresh water generally. In each round, the main wedged slug is divided into three small slugs; the small slugs in each round are combined by regulating the corresponding concentrations by the B III-type poly-surfactant according to formation permeability. According to the method, the nonhomogeneous heavy oil reservoirs are emulsified to reduce viscosity, the wedged equivalent vicious slug is used for equi-fluidity displacement, and swept volume is increased; accordingly, recovery efficiency of heavy oil can be further increased, investment can be reduced and operation can be simplified.

The invention provides a deep foundation pit confined water inrushing pressure reduction and water control structure. The deep foundation pit confined water inrushing pressure reduction and water control structure comprises a wellhole vertically formed under the ground. A well casing is arranged in the wellhole. Steel filter tubes are arranged on the upper middle portion and the lower portion of the well casing correspondingly. The bottom of the well casing is filled with filter material bags. A water filtration cushion block is arranged on the outer side of a bottom opening of the well casing. A submersible pump is arranged in the well casing. The submersible pump comprises a drain pipe. The drain pipe extends to a top opening of the well casing. According to the deep foundation pit confined water inrushing pressure reduction and water control structure, the pressure reduction well casing is provided with the upper steel filter tube and the lower filter tube, the combined drainage method of deep-layer drainage of the pressure reduction well casing and shallow-layer drainage of the horizontal filter tube is adopted, and high pressure and large-water-flow confined water inrushing ofa deep foundation pit can be stopped in short time. Compared with a traditional method, the deep foundation pit confined water inrushing pressure reduction and water control structure has the advantages that the water control effect is obvious, the water quality is good, no mud and sand are carried out, and no water inrushing hidden danger occurs again.

The invention discloses a phase-controlled valve. The phase-controlled valve comprises a base pipe (1), flow limiting valves (2) are mounted on the base pipe (1), a lower end cover (4) of each flow limiting valve (2) is provided with an annular flow passage (5) and a control chamber (7), the side wall of the control chamber (7) is provided with a sluice (9) through which the annular flow passage (5) and the control chamber (7) are communicated, and the base pipe (1) is provided with a base pipe liquid inlet (10) communicated with a nozzle (8) of the control chamber (7). The phase-controlled valve has the advantages that fluids can be distinguished, oil and water can be separated automatically, water output is limited to balance profiles and eliminate heel effects, annular flow influences are eliminated, productive life of an oil-gas well can be prolonged, recovery efficiency of a control reservoir of a horizontal well can be improved beneficially, and the phase-controlled valve is applicable to edge/bottom water reservoirs high in anisotropism.

The invention discloses a concrete floor pouring method for pressure reduction and water control of sudden rushing of confined groundwater of a deep foundation pit, relating to the technical field ofcivil and construction. The method comprises the following steps: arranging temporary cofferdams on the bottom surface of the foundation pit in the peripheries of the sudden rushing; symmetrically arranging at least two pressure reducing tube wells in the peripheries of the temporary cofferdams on the outer sides of the temporary cofferdams by taking corresponding sudden welling points as centers;and pumping underground water from the pressure reducing tube wells. Pressure reduction and water control of the sudden rushing of confined groundwater of the deep foundation pit are solved by meansof a pressure reducing water control system. When the sudden rushing of confined groundwater of the deep foundation pit happen, the sudden rushing of high pressure and large capacity confined groundwater can be terminated within a short period. The method overcomes the difficulty that wells are hard to form in the high pressure and large capacity confined groundwater and clean water cannot be discharged, and can be organized and implemented within a short time after sudden rushing, so that the water control effect is obvious.

The invention discloses an automatic hydrant, comprising a hydrant body and a sensor controlling the state of the hydrant body, wherein, the hydrant body comprises a water outlet pipe, a diaphragm and a diaphragm chamber, wherein, the water outlet pipe is used for being connected with water supply equipment; the diaphragm is contacted with the opening plugged on the water outlet pipe through the given pressure; and the diaphragm chamber is formed on the upper side of the diaphragm; the sensor side comprises a floater mechanism and a switching device controlled by the floater mechanism; the switching device comprises a first water control pipe connected with the diaphragm chamber and a second water control pipe connected with the water outlet pipe; the switching device comprises a valve plug and a pressure release opening, wherein, the valve plug is controlled by the floater mechanism and has the freedom degree of the up-and-down movement; and the pressure release opening is arranged on the switching device; the switching device is in a communicated state of the first water control pipe and the pressure release opening at the dead point position of the valve plug; the other dead point position is in a communicated state of the first water control pipe and the second water control pipe. The automatic hydrant has compact structure, low cost and good water control effect.

The invention discloses an urban hard riverway modular multi-system coupled ecological restoration system, which mainly comprises: a microbial attachment substrate module purification system, a submerged plant module purification system and a large-scale macrobenthic module purification system. The submerged plant module purification system is located at the downstream of the microbial attachment substrate module purification system, and the large-scale macrobenthic module purification system is located at the downstream of the submerged plant module purification system. The system provided by the invention can effectively treat urban hard riverway black odor and water deterioration, enhance the self-purification ability of riverway, and make the riverway water reach the surface water standards. The system provided by the invention is conducive to constructing a complex aquatic organism habitat, enhancing riverway animal and plant habitat diversity, and increasing the riverway ecosystem stability.

The invention relates to a method for wintering and frost protection of vetiver grass in the north. According to the technical scheme, the method includes the following steps that (1), after the outdoor temperature is reduced below zero, cropland is subjected to permeable irrigation once; (2), the vetiver grass is cut till the vetiver grass is 3-10 cm away from the ground, and the rhizomes of thevetiver grass are not damaged; (3), the upper portion and the periphery of the vetiver grass are covered with charcoal, then comprehensive earthing is carried out, and the charcoal is completely covered with earth; (4), on the tenth day after the tomb sweeping day, the earth is removed, the charcoal is left in the cropland, complete watering is carried out once, and germination of the vetiver grass is promoted. The method has the advantages that by means of the method, the wintering survival rate of the vetiver grass can be increased to 95% or above, the wintering survival rate of cultivated seedlings in control treatment is zero, compared with a traditional charcoal material, the vetiver grass is subjected to frost protection treatment in a charcoal mode by means of the method, the biomass is increased to 8 tons per mu from 3 tons per mu after wintering, and the wintering survival rate and the biomass are both remarkably increased.

The invention discloses a waterproof and drainage device for hydraulic engineering construction. The waterproof and drainage device for the hydraulic engineering construction is composed of a winch with a handle, a lifting lead screw, a temporary cofferdam dam, a supporting steel frame, a flow guiding sealing groove, a water inlet channel, a gate, a gate cavity channel and a water outlet channel;the gate in the gate cavity channel on the lower part of the temporary cofferdam dam is adopted to control the watertightness and the drainage of the hydraulic engineering construction, a water sourcein the temporary cofferdam dam can be effectively controlled to be discharged through the water inlet channel, and a flood outside the temporary cofferdam dam can be further effectively controlled from swarming into through the water outlet channel; the waterproof and drainage device for the hydraulic engineering construction has the advantages of being simple in structure, low in construction cost and good in water control effect; and the device is an ideal waterproof and drainage device for the hydraulic engineering construction.

The invention relates to a flow control device used in the field of petroleum production. The flow control device comprises a first valve body which is provided with a fluid inlet, a second valve bodyconnected to the first valve body and provided with a plurality of fluid outlets, and a floating disk arranged between the first valve body and the second valve body, wherein a fluid passage communicating the fluid inlet with the fluid outlets is formed between the first valve body and the second valve body; and the floating disk is configured to float in the fluid passage so as to change the flow of fluid in the fluid passage. The flow control device can automatically adjust the size of the fluid passage according to different fluid properties, and has the characteristics of intelligent water control and oil increment, thereby effectively solving the problem of high water cut in oil wells and improving the recovery efficiency in oil reservoirs.

The invention provides a blood recovery bottle collection and water control device, and belongs to the technical field of medical auxiliary instruments. The device comprises a support frame; a water control groove is fixedly arranged on the support frame, and is inclined to the horizontal plane by 5-10 degrees; multiple water control columns are arranged in the water control groove, and are perpendicular to the horizontal plane by 90 degrees; embedding grooves are formed in the middle positions of the water control columns; and ultraviolet sterilization lamp tubes are embedded in the embedding grooves. The device is simple in structure and high in practicability, and solves the technical problems of single function, poor water control effect and incapability of collecting drained water in a centralized manner in a blood recovery bottle collection and water control device in the prior art.

A stainless steel chopstick placing box comprises a stainless steel box body, the stainless steel box body is mounted on a water collecting partition board arranged in the middle of a stainless steel water collector, and the partition board and the bottom board of the water collector define a water collecting cavity. Chopsticks can be placed inside the box body, water residue on the chopsticks can be collected inside the water collecting partition board through the water collecting partition board to keep the chopsticks dry, and water inside the water collecting cavity can be poured out a certain time later. Therefore, the stainless steel chopsticks placing box is good in water draining effects, clean and sanitary.

The invention discloses an antibacterial medical non-woven fabric and a preparation process thereof, and relates to the technical field of non-woven fabrics. The preparation process comprises the following steps that S1, a non-woven fabric is prepared by adopting a preparation system, and opening, carding, lapping and spunlace are sequentially performed on composite raw material fibers to obtain the non-woven fabric; S2, the non-woven fabric prepared in the step S1 is dried, the drying temperature is controlled to be 95-120 DEG C, and after drying treatment, the moisture content of the non-woven fabric is 20-30%; S3, the non-woven fabric prepared in the step S2 is washed with water for three times, and the non-woven fabric is neutralized with an acetic acid solution with the concentration of 3% to enable a pH value of the non-woven fabric to be 5.0-8.0; S4, the non-woven fabric obtained in the S3 is dried, the drying temperature is controlled to be 95-120 DEG C, and the water content is controlled to be 8-10%; and S5, the non-woven fabric obtained in the step S4 is cooled and rolled. According to the antibacterial medical non-woven fabric and the preparation process thereof, a special antibacterial process and a fiber material are adopted, so that the non-woven fabric has a certain antibacterial effect and is more suitable for being used in the medical field.

The invention discloses a test tube drying device for food detection, and relates to the technical field of food safety, the test tube drying device comprises a workbench, a drying unit and a supporting unit; a supporting unit is installed in the middle of the upper end of the workbench. Each drying unit comprises an exhaust pipe, an air inlet pipe, a fastening ring, a filter screen, a metal rod, a heating wire and an air inlet fan, three circular holes in a linear array are formed in the front side of the upper end of the workbench, the exhaust pipes are arranged on the inner walls of the circular holes, the lower ends of the three exhaust pipes are connected with one side of a ventilation pipe, and the air inlet pipe is arranged at the front end of the ventilation pipe; a fastening ring is arranged on the outer side of the front end of the air inlet pipe, a filter screen is arranged on the inner wall of the fastening ring, three metal rods distributed in an array mode are arranged in the middle of the inner wall of the air inlet pipe, the water control effect of the whole structure on a test tube is good, residual water stains can be reduced, the drying time can be shortened, the fixing structure of the test tube is stable, and the test tube can be dried conveniently. And deviation is not easy to generate in the drying process.