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67results about How to "Protection from contamination" patented technology

Intelligent pipeline type automatic dewaterer for oil tank and pressure tank

The invention discloses a smart pipeline type automatic dehydrator of the oil tank and pressure pot, comprising an entrance flange, an outlet flange, a honeycomb duct, a major detecting controller, a minor detecting controller, a major filter, a minor filter, a vapor pipe, a temperature controller, an adjusting valve and a drain-trap. The entrance flange of the honeycomb duct is connected with the spot oil tank, and the outlet flange is connected with the adjusting valve; the sensors of the major and minor detecting controllers are respectively connected with the honeycomb duct, and the major and minor filters are respectively covered on the sensors of the major and minor detecting controllers, the signal outputs of the major and minor detecting controllers are connected with the adjusting valve. Because the dehydrator is connected with the oil tank by the mounting flange, when the size is not suitable, the problem can be solved by adding a converting joint, and the mounting is very convenient. Meanwhile the honeycomb duct adopts a streamline structure, and completely without circulation dead angle. While dehydration, the solid impurity settled in the bottom medium of the dehydrator can be discharged with water without budget in the dehydrator, and the invention has a self rinsing function, and does not need periodical rinsing. The invention is suitable for the automatic dehydration field of oil tank, liquefied gas tank and pressure storage tank of chemical product.
Owner:四川大成涡轮设备再制造技术有限公司

Horizontal well concentric tubing continuous negative pressure sand pump process tubular column

ActiveCN105041243AChange sand removal processSolve the missing problemFlushingSteel ballHigh pressure water
The invention belongs to the technical field of oilfield workover in the conditions of perforated casing completion, and discloses a horizontal well concentric tubing continuous negative pressure sand pump process tubular column, wherein a high pressure water faucet is connected with a tool tubing through a reversing joint, the lower end of the tool tubing is connected with a concentric tubing combination through a conversion joint, the lower end of the concentric tubing combination is connected with a negative pressure sand pump device, a steel ball and a ball seat are arranged in the reversing joint, the steel ball is connected with a spring, the other end of the spring is fixed on an upper position of the ball seat, a discharge hole is arranged on the wall of the reversing joint which is arranged below the ball seat, and a sliding sleeve which blocks the discharge hole is arranged on the outer wall of the reversing joint. The horizontal well concentric tubing continuous negative pressure sand pump process tubular column achieves negative pressure sand pumping under the premise that the demands of oilfield horizontal well continuous tubular column downward operation are met, simultaneously has the functions that scales are cleaned up and cements are crushed in a sleeving. The horizontal well concentric tubing continuous negative pressure sand pump process tubular column integrates the functions of sand removal, scale clean and cement crushing in a shaft firstly and achieves once integration operation, greatly simplifies construction procedure, and improves construction efficiency.
Owner:PETROCHINA CO LTD

Asphalt flue gas purification treatment equipment

The invention discloses asphalt flue gas purification treatment equipment. The equipment comprises a dynamic wave washing device, a light direct oxidation and photocatalysis oxidation device and a water treatment device. The dynamic wave washing device and the water treatment device are connected through a water pipe. The dynamic wave washing device and the light direct oxidation and photocatalysis oxidation device are connected through a gas pipe. It is an important breakthrough that dynamic wave washing, gas, solid and liquid separation, photochemical oxidation technology and water treatment are combined for successful purification treatment of asphalt flue gas in the technology in the field of environmental protection. At present, multiple enterprises in China basically adopt a sprinkling cleaning and activated carbon adsorption method for treating industrial waste gas containing high-concentration organic matters, and the problems that the pollution cleaning effect is not ideal and activated carbon is hard to treat exist. The dynamic wave washing and photochemical oxidation technology is adopted for successful purification treatment of asphalt flue gas, and a novel wider way is opened up through the light direct oxidation and photocatalytic oxidation cooperative reaction technology for atmospheric pollution treatment and industrial waste gas treatment in China.
Owner:浙江森井生物技术股份有限公司

Laser processing device and laser head anti-collision assembly thereof

The invention relates to a laser processing device and a laser head anti-collision assembly thereof. The laser head anti-collision assembly comprises installation bases, elastic pieces, connecting pieces and sensors. The elastic pieces are located in containing spaces of the installation bases. The first ends of the elastic pieces are in butt joint with the installation bases. The connecting pieces comprise body parts and clamping parts. The body parts are in a barrel shape, and the clamping parts are in a circular ring shape and protrude out of the body parts. The connecting pieces are installed on the installation bases. The clamping parts are connected with the installation bases in a clamping manner. At least part of the body parts penetrate out of the containing spaces through installation openings, and the ends, away from the installation bases, of the body parts are used for being connected with laser heads. The second ends of the elastic pieces are in butt joint with the bottoms of the body parts. The connecting pieces can stretch, contract and rotate at the installation openings. The outer surfaces of the parts, close to the installation bases at the installation openings, of the body parts are in an arc face shape. The outer surfaces of the parts, close to the installation bases at the installation openings, of the body parts are in an arc shape face shape. When a laser head is subjected to impacts to deflect, the phenomenon that the connecting pieces are blocked by the installation bases can be avoided, and reliability of the laser head anti-collision assembly is improved.
Owner:HANS LASER TECH IND GRP CO LTD

Natural ventilation pressure measuring instrument

The invention relates to an independent cavity natural ventilation pressure measuring instrument. The independent cavity natural ventilation pressure measuring instrument includes a base, a lantern ring, a tube, a lead wire, and a wire outlet aviation plug; the base is internally provided with an oil charging pipeline; the right side of the base is provided with the tube, and the base is connected to the tube by the lantern ring; a sensor is arranged within the lantern ring; an oil charging cavity is arranged between the sensor and the base; the rear side of the sensor is provided with a circuit board, and the oil charging cavity passes through the sensor, and then is connected to the circuit board; the outer edge of the circuit board is provided with sealing insulation paste; one end of the lead wire is connected to the circuit board, and the other end of the lead wire is connected to the wire outlet aviation plug. According to the invention, secondary pollution of measuring media can be avoided by adoption of an independent ventilation cavity, and washing and cleaning of a sanitary occasion can be assured by adoption of a primary oil charging structure; an external ventilation structure of the sensor, and a two-channel ventilation design of a polymer ventilation plug and a polymer ventilation film can assure natural ventilation and can effectively prevent moisture condensation and moisture leakage; the influence of moisture on the performances of the natural ventilation pressure measuring instrument can be avoided by adoption of a ventilation and circuit board isolation design; a whole sealing structure within the circuit board can assure a long and reliable operation of the circuit board, and the natural ventilation pressure measuring instrument is suitable for operations in various environments.
Owner:SHANGHAI LEEG INSTR CO LTD

Self-cleaning washing bottle

The invention discloses a self-cleaning washing bottle, relates to a washing bottle and provides a self-cleaning washing bottle with a gas purifying function, which is convenient to use, has high jet flow power and can be used for effectively preventing microorganisms from the air, dust or gas which may cause liquid deterioration and the like from entering to protect liquid in the bottle from being polluted. The self-cleaning washing bottle is provided with a plastic bottle, a bottom cap, a liquid spray pipe, an air suction pipe and a purifying device, wherein the bottle cap is connected with the bottleneck of the plastic bottle in a matching way; the liquid spray pipe is provided with a check valve or a one-way valve, passes through the bottle cap and is inserted into the plastic bottle; the air suction pipe passes through the bottle cap, is inserted into the top of the plastic bottle and is provided with a check valve or a one-way valve; the inlet of the check valve or the one-way valve is connected with a purifying device; and the outlet of the check valve or the one-way valve is connected with the air suction pipe. By adopting the self-cleaning washing bottle, the pollution risk of trace analysis and biology laboratory is greatly lowered, the service life of liquid in the washing bottle can be prolonged effectively, and the resource consumption is reduced. The self-cleaning washing bottle is suitable for experiment places lacking in ultraclean environment, in particular for wild fields.
Owner:XIAMEN UNIV
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