186results about How to "Avoid effusion" patented technology

The invention provides a natural gas hydrate water discharge gas production exploitation device and an exploitation method of the natural gas hydrate water discharge gas production exploitation device, and belongs to the technical field of natural gas hydrate exploitation. A feeding cavity (12) communicated with a natural gas hydrate layer (29) is connected with an in-well gas-liquid separator (7), an exhaust cavity (8) of the in-well gas-liquid separator (7) is communicated with a gas production sleeve pipe (17), and a water discharge opening of the in-well gas-liquid separator (7) is communicated with a liquid storage cavity (2) arranged at the lower part. According to the exploitation method adopting the device, the natural gas hydrate layer (29) is firstly heated, the in-well gas-liquid separator (7) is utilized for separating gas-water mixture generated in the natural gas hydrate decomposition process, meanwhile, a liquid level monitoring device is utilized for regulating the water discharge speed of an electric submersible pump (4), and the decomposition speed of the natural gas hydrate is controlled. The device and the method have the advantages that the natural gas hydrate exploitation well liquid accumulation can be effectively prevented, the gas production efficiency is improved, the work is safe and reliable, the environment is protected, the service life is long, and the like.

The invention relates to a method for preparing composite biological medical material used to avoid adhering organisms, wherein said film is formed by two layers; the layer used as base material is formed by degradable composite macromolecule polylactic acid, glycolic acid, or their copolymer, treated by static spin technique, to make film fiber into nanometer level; then coats one layer of degradable natural macromolecule chitose or relative derivant on the base film, to be treated to obtain the degradable composite biological medical film; and the invention can add different amounts of medical elasticizer between two layers to adjust the degrade speed. The invention can improve immunity with haemostasis function, etc.

The invention provides a medical anti-sticking membrane and a preparation method thereof. The anti-sticking membrane comprises a nanometer frame and hydrosol attached thereon. The hydrosol is internally packed with one or several kinds of styptic medicament or/and anti-sticking medicament. The invention also provides a preparation method of the anti-sticking membrane, comprising the following steps of: preparing electro-spinning solution, styptic medicament and/or anti-sticking medicament-containing hydrosol solution and crosslinker solution; receiving static spinning with the crosslinker solution to obtain the nanometer frame; printing the styptic medicament and/or anti-sticking medicament-containing hydrosol solution onto the nanometer frame by an ink-jet printer, and solidifying the hydrosol solution to obtain the anti-sticking membrane. The anti-sticking membrane has good capability and biological compatibility, and nontoxicity as well as nonirritant, can be completely degraded and absorbed, is compounded with controllably released styptic medicament or/and anti-sticking medicament, has controllable degrading time and speed, and conquers defects of the prior art.

The invention relates to an anti-adhesion hernia repair patch which comprises a mesh fabric substrate and an electrostatic spinning anti-adhesion layer connected with the mesh fabric substrate. The pore diameter of the electrostatic spinning anti-adhesion layer is 10nm to 2,000nm, while the preferred pore diameter is 50nm to 1,500nm and the more preferred is 100nm to 800nm. After being transplanted into human body, the anti-adhesion hernia repair patch can not only repair hernia, but also prevent post-operation adhesion and can reduce effusion, thus reducing infection.

Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.

Disclosed are hydrogels wherein a polymer matrix is modified to contain a bifunctional poly(alkylene glycol) molecule covalently bonded to the polymer matrix. The hydrogels can be cross-linked using, for example, glutaraldehyde. The hydrogels may also be crosslinked via an interpenetrating network of a photopolymerizable acrylates. The hydrogels may also be modified to have pharmacologically-active agents covalently bonded to the poly(alkylene glycol) molecules or entrained within the hydrogel. Living cells may also be entrained within the hydrogels.

The invention relates to an optimization method of an oil refinery hydrogen system. According to the system provided by the invention, the maximum benefit of the oil refinery hydrogen system is targeted, constraint conditions are optimized, and a new mathematical programming algorithm including light dydrocarbon resource optimization is formed; and compared with the mathematical programming algorithm of an existing hydrogen system, the optimization method is more suitable to actual circumstances, and more benefits can be obtained to meet the requirements of hydrogen conservation and synergy for oil refinery. The invention further provides application of the method in the optimization of the oil refinery hydrogen system, and after the method is optimized, efficient utilization of hydrogen and light dydrocarbon can be realized, so that considerable comprehensive benefit is obtained.

The invention relates to a vertical-well double-layer partial-pressure commingling method and device for coalbed methane. The method includes the steps that a pipe is arranged in the well, and three isolated channels including the first channel, the second channel and the third channel are arranged in the pipe; the side wall of the first channel and the side wall of the second channel are communicated with two coal beds respectively, gas of the two coal beds is discharged to a well opening through the first channel and the second channel respectively, liquid of the two coal beds flows to the bottom of the first channel and the bottom of the second channel respectively, and gas-liquid separation is achieved in the well; one-way valves are arranged between the first channel and the second channel and between the second channel and the third channel, and the liquid of the two coal beds is jointly drawn out of the well while accumulated liquid in the well bottom is avoided. According to the method and device, the gas and the water generated by the upper coal bed and the lower coal bed are jointly mined and jointly drawn through the single well, gas-liquid separation is carried out at the well bottom, the gas is drawn through a gas path, the liquid is drawn through a liquid path, pressure systems of the two coal beds are separated, interlayer interference generated during exploitation is reduced, and the gas yield is effectively increased.

The invention discloses a three-dimensional nanocomposite adhesive bandage as well as a preparation method and a use method thereof. The three-dimensional wound-protection layer of the adhesive bandage has a curved surface, and the curved surface is complementary to the uneven wound surface and comprises a nanobacterial cellulose frozen-dried membrane and an eletrospun chitosan-containing nanofiber film. The three-dimensional wound-protection layer can carry a part of liquid medicine. When in use, the adhesive bandage fully fits the wound surface, has air permeability, can keep the wound surface wet, has the functions of stop bleeding, inhibiting bacteria, promoting the healing of a wound and preventing the adhesion of the wound surface to the wound dressing and can be used widely. The adhesive bandage can well fit the concave wound surface and the convex wound surface, is applicable to the wet wound surface with many exudates, the dry wound surface which needs to be wetted by the wound dressing and the potential wound surface which needs protection, thereby being an ideal wound dressing.

The invention relates to a water source heating-air conditioning-hot water three-way set. The asymmetric phase change rate with magnitude difference among parallel heat exchangers is formed by switching on and switching off the driving force of a refrigerating medium side and matching the guiding of a check valve of a refrigerant side to radically replace an electromagnetic valve switch refrigerant loop; and five functions of heating, air conditioning, hot water, air conditioning and hot water (an ordinary type/an energy saving type), and the like are realized in a mode of simpler structure, lower cost, more reliable operation and higher efficiency. The water source heating-air conditioning-hot water three-way set accords with a natural law of 'Dujiang Dam' action through inaction, radically eliminates hidden trouble of lack of fluorine of heat exchanger operation caused by stopping using refrigerant fluid stored in the heat exchanges in the prior three-way set, and is favorable for home application of products.

The invention discloses a trimethyl phosphite continuous reduced-pressure rectifying technology. A first-level water cooling condenser and a second-level salt water condenser are arranged at the top of a rectifying tower; a gas phase temperature at the top of a control tower is lower than 0 DEG C; after two levels of condensation, the gas phase is demisted by a demister and finally enters a vacuumpump; pressures in the control tower and the rectifying tower are negative pressures. After being condensed by the first-level condenser and the second-level condenser, liquid enters a rectifying reflux tank; the liquid after third-level condensation enters a receiving tank. The technology disclosed by the invention remarkably reduces loss of trimethyl phosphite, has high yield, lowers abrasion of the vacuum pump and realizes high recovery rate of tail gas.

The invention discloses a gas well downhole multistage ultrasonic atomization water drainage and gas production device, and belongs to the field of oilfields. The device is arranged in a shaft and comprises a downhole self-power-generation ultrasonic atomization device and a floating type self-power-generation ultrasonic atomization device; the downhole self-power-generation ultrasonic atomization device is arranged in the position where condensed liquid starts to appear in the shaft, and the downhole self-power-generation ultrasonic atomization device is used for timely collecting the condensed liquid starting to drop and atomizing the condensed liquid in liquid phase into small liquid drops; the floating type self-power-generation ultrasonic atomization device is arranged below the liquid level at the bottom of the shaft and used for atomizing the condensed liquid dropped in the shaft in the liquid phase. According to the device, the downhole self-power-generation ultrasonic atomization device and the floating type self-power-generation ultrasonic atomization device can generate power by themselves under the effect of airflow in the shaft, external power sources are not needed, the condensed liquid in the liquid phase can be dispersed into droplets and drained out of the shaft, wherein the droplets can be carried by the airflow at a certain flow rate and are small in diameter, and therefore energy can be greatly saved.

The invention provides preparation of a feather keratin-based biopolymer external application material. The preparation method comprises the steps that feather keratin is dissolved into dispersion liquid to prepare a feather keratin solution; gelatin is dissolved into distilled water and then added into the feather keratin solution, and the solutions are mixed to be uniform under stirring at room temperature; a condensing agent is added, stirring is conducted, then a condensing auxiliary is added, the pH value of the system is regulated to be 5-7, and stirring is continuously conducted; a plasticizer is added, and reacting under stirring is conducted for a certain time; after reacting is finished, dialyzing is conducted with distilled water for 18-36 h under the dark condition, freeze drying is conducted, and then the biopolymer external application material is obtained. The biopolymer external application material is a spongy solid material, and a microporous sheet structure is arranged in the material; the good flexibility, adsorptivity, water-retaining property and vapor permeability are achieved. Antibacterial property and external releasing research shows that the material has the good bacteriostatic property and the quick releasing effect on micromolecular model drugs and is expected to be applied to the biomedicine field by serving as a quick sterilizing and inflammation diminishing external application material for acute wounds.

The invention discloses a spatial dilator for endoscopic thyroidectomy. The spatial dilator comprises a sleeve, a push rod capable of telescoping along the axial direction is arranged in the sleeve, a button matched with the push rod and capable of pushing the push rod to telescope is arranged outside the sleeve, the left side of an extending end of the push rod is movably connected with one end of a left connecting rod blade, and the right side of the same is movably connected with a right connecting rod blade. The other ends of the left connecting rod blade and the right connecting rod blade are respectively connected with a left cutter and a right cutter which are movably connected with ends of the sleeve. The other end of the push rod is connected with a handle. By the spatial dilator for endoscopic thyroidectomy, hurt to breast skin of patients is reduced, operation is simplified, and operation time can be effectively shortened.

The invention discloses an oil temperature heating belt control method and device. The control method comprises the following steps that the exhaust temperature Tp, outdoor ambient temperature Tw andindoor ambient temperature Tn of an exhaust pipe are detected; whether the difference between Tw and Tn is less than the preset temperature T1 or not is judged, and whether the difference between Tp and Tw is less than the preset temperature T2 or not is judged; when Tw-Tn is smaller than Ti and Tp-Tw is smaller than T2, an oil temperature heating belt is controlled to be energized; when the oil temperature heating belt is energized, Tp, Tw and Tn are detected continuously; whether Tw-Tn is larger than or equal to T3 or not or Tp-Tw is larger than or equal to T4 or not is judged; and when Tw-Tn is larger than or equal to T3 or Tp-Tw is larger than or equal to T4, the oil temperature control heating belt is controlled to be powered off, and a regulation process is completed. By means of thecontrol method, on-demand starting is realized, unnecessary power consumption of the air conditioner is reduced, standby power of the air conditioner is reduced, energy conservation is improved, andthe service life of the oil temperature heating belt is prolonged.

The invention discloses application of a skin care composition in diabetic foot care or sutured wound surface care. The skin care composition is comprised from, in percentage by weight, the followingcomponents: 1%-20% of a film-forming agent, 0.5%-10% of a thickener, 0.5%-10% of a plasticizer, 0.01%-2% of a bacteriostatic agent, 0.01%-2% of a skin-conditioning agent and the balance of solvent. After the skin care composition is applied on the skin, a transparent thin film with suitable tenacity and strength can be formed, the transparent thin film further has good wet fastness, abrasion resistance, water resistance and antibacterial activity, therefore, the damaged skin can be isolated from the outside world, is not prone to be damaged by abrasion or infected by pathogenic bacteria, remains moist and is not prone to chap, and thus damaged skin healing is facilitated; thus a very good effect of protecting diabetic feet and a sutured wound surface can be achieved, a hard-to-heal wound surface of the foot skin of a diabetic patient is prevented, and disease cause development of the diabetic feet is blocked to a certain extent; meanwhile, deterioration of a sutured wound of the sutured wound surface can be prevented, healing of the sutured wound is facilitated, and it is convenient to observe the healing condition of the wound surface.