32results about How to "No impact on production" patented technology

The invention relates to a pipeline leaking stoppage recovery method, in particular to a special pipeline leaking stoppage recovery method for the petrochemical industry. The method comprises the following steps: using a disposable leak stopper to plug up a pipeline leaking point, wherein the disposable leak stopper is composed of an oil-proof, acid-proof and high-pressure resistant wedge-shaped sealing silicone ring, and a stainless steel wedge-shaped strapping ring with an opposite shape; cleaning oil stains and sundries on the pipeline around the disposable leak stopper, grinding the pipeline with a brush so as to show a matte surface on the surface of the pipeline, and then tightening the disposable leak stopper and the surrounding pipeline with a high-strength compression plugging adhesive tape; fixing a reinforced fixing socket, which is internally coated with a special high-strength compression plugging adhesive, outside the high-strength compression plugging adhesive tape to form a permanent plugging structure. The special pipeline leaking stoppage recovery method for the petrochemical industry can be implemented under pressure without production halt, has no influence on production, needs no evacuation and nitrogen replacement, needs no hot work, prevents fire and security risk, and is suitable for compression cold treatment plugging and physical plugging technologies of the petrochemical industry.

The invention relates to a cleaning agent for organic sediments inside an oil tank and a preparation method of the cleaning agent. The cleaning agent comprises the following components in percentage by mass: 30%-60% of tetramethoxy-propane, 20%-40% of dimethoxy-ethane, 5%-15% of diethylene glycol octyl ether, 2%-10% of sodium polyphosphate, 1%-1.5% of sodium alkyl benzene sulfonate and 2%-3.5% of lauryl sodium sulfate. The cleaning agent disclosed by the invention can be cleaned on line and also be cleaned off line, generates no influence on production because of no need of shutdown when used for cleaning on line, so that cost and time are saved; the cleaning agent is harmless to an operator because an operator unnecessarily enters the oil tank, is pollution-free on the environment, can be used for recovering 90% hydrocarbon by recycling sludge and has the advantages of outstanding economic benefit, simple preparation method, short cleaning operation time, high cleaning quality, ecological and environmental friendliness, no three wastes discharge, no need of anti-rust treatment on a container after cleaning, good social benefit and economic benefit, harmlessness on human bodies, no corrosion on equipment and no secondary pollution.

The invention belongs to the technical field of iron and steel metallurgy and in particular relates to a low-cost slag washing method. The low-cost slag washing method comprises the following steps: producing synthetic slag for slag washing in a steel ladle, obtained by casting molten steel, by utilizing refining slag and a deoxidant; then utilizing the produced solid-state synthetic slag with relatively high temperature for slag washing operation of a steel tapping process of the next heat. The method provided by the invention has a simple technology and is low in cost; the consumption of slag production materials is less and the heat of the refining slag is recycled; smooth production is not influenced; compared with cyclic utilization of heat-state refining slag, the low-cost slag washing method has remarkable advantages. Sulfur is effectively removed.

The invention relates to a design method of a converter cast iron water-cooling mouth, comprising the steps of: 1. designing shape size; 2. designing install size; 3. designing a converter cooling system; and 4. designing the main body material of the converter mouth. The converter cast iron water-cooling mouth has the following advantages and benefits: 1. water tight: a cast mode which is pre-cast with a cooling water pipe is adopted, the water pipe is shaped by means of cold bend, and the surface of the water pipe has a good protection layer, therefore, the cast iron water-cooling mouth is watertight; 2. no mending: the mouth is watertight, therefore, the mouth can be out of maintenance; 3. long service life: under the normal using condition, the cast iron converter mouth can use one converter campaign without needing to change the converter mouth to prevent from affecting the manufacture; 4. hard deformation; and 5. hard sludge adhering and easy sludge removing. Because the materialis different, the cast iron converter mouth is hard to be adheree with the sludge and easy to remove less quantity of the sludge.

The invention relates to the field of blooming furnace observation devices, in particular to a pneumatic advancing-retreating belt sweeping and protection device with a short and exquisite structure.The device comprises a thermal imager, a closed air cylinder, a ball valve, a transition sleeve, a base guide pipe and a water jacket fixedly mounted on the base guide pipe. A first flange and a second flange are fixedly arranged at the left end and the right end of the ball valve correspondingly. A third flange and a fourth flange are arranged at the left end and the right end of the transition sleeve correspondingly. The other end of the water jacket is fixedly mounted on the first flange. The fourth flange at the right end of the transition sleeve is fixedly connected with the first flangethrough bolts. The closed air cylinder comprises a cylinder barrel and a cylinder rod. A containing groove is formed in the cylinder rod. The thermal imager is fixedly mounted in the containing groovethrough a support. A front end cap is further arranged at the front end of the containing groove. A preformed hole is formed in the front end cap. The end of the cylinder rod of the closed air cylinder is fixedly connected with the third flange. The overall product structure of the device is short and exquisite, subsequent equipment maintenance is convenient, and the thermal imager can be protected.

The invention discloses a non-intrusive load identification device and method based on Fourier transform, and the method comprises the steps: judging the change of instantaneous power, analyzing the input and removal of a load, calculating the feature quantity extraction of the load when the load is input through the variable quantity of the load, and calculating the feature quantity extraction of the load after the load is removed through the instantaneous power after the load is removed. According to the method, a discrete fractional order Fourier transform algorithm is adopted to extract a load feature vector, key parameters required by transform are defined, the load feature vector and feature values of a feature library are subjected to amplitude and phase angle matching, and when an error is smaller than a tolerance range, matching is fed back; when the feature library is not matched, the feature vector is stored as a new load feature, and a notification is sent out; and compared with a traditional non-intrusive load recognition algorithm, the algorithm has the advantages of being high in precision and small in error.

The invention discloses a power transmission device. The power transmission device comprises a base, a gear coupling, a speed reducer and a motor; the gear coupling comprises a first gear module and asecond gear module coaxially engaged through a connecting inner gear ring; the first gear module is fixed on one side of the top surface of the base; the second gear module is fixed at one end of thespeed reducer; a clamping groove is formed in the other side of the base; the speed reducer comprises a speed reducer body and a stand; a convex block cooperating with the clamping groove is arrangedat the bottom of the stand; and the end, far from the gear coupling, of the speed reducer is fixedly connected with the motor. The invention further provides a disassembly method of the power transmission device. The power transmission device can simply and conveniently replace the motor and the speed reducer without needing staff to enter a heat chamber, greatly reduces the personal safety risk,guarantees the personal safety, is short in replacement and maintenance time, and improves the production efficiency.

The invention discloses a maintenance method for an external corrosion defect of a submarine pipeline. The maintenance method comprises the following step (1) of polishing and cleaning the corrosion defect; the step (2) of filling corrosion pits cleaned in the step (1) with repair agents, pressing and trowelling the corrosion pits, and removing seawater; (3) the corrosion defect position of a pipe wall is wound in a lap joint mode through an alkali-free glass fiber belt coated with binders on the front side and the back side; and (4) the corrosion defect position of the pipe wall in the lap joint mode is wound through a reinforced winding belt, and therefore the yield strength of the corrosion defect position is recovered to the state before corrosion; the step (5) of installing a grouting mold at a repair area when the reinforced winding belt reaches the curing hardness, then pouring high-strength cement to remove seawater, till the grouting operation is completed after grout is returned from a grout return port; and forming a concrete balance weight insulation protection layer after the high-strength cement is solidified, and finishing maintenance. According to the repair method, the corrosion development can be effectively controlled; the pipeline property is not changed, the integrity of the pipeline can be kept, and magnetic flux leakage detection is facilitated; the construction is convenient; the requirement for construction resources is low; and the construction cost is low.

A tension belt or a hanging belt is made of an elastic material, and has a substantially flat drive side, in particular an elevator belt, wherein tension carriers or cords extending in parallel in thelongitudinal direction of the tension belt or sling are embedded in the elastic material of the tension belt or sling. The tension belt or the lifting belt surrounds a belt wheel and/or a steering roller of the belt transmission device in a rotary manner; therefore, the tension belt or the lifting belt is driven, turned or guided; the flat driving side of the tension belt or the hanging belt is provided with one or more grooves; some parts of the groove extend at a variable inclination relative to the longitudinal direction of the belt and have periodicity in the longitudinal direction of thebelt; wherein, in one period, the orientation or inclination of each groove part relative to the longitudinal direction is formed in such a way that a transverse force component, which is caused by the orientation or inclination of the groove and acts on the latter during the rotation of the belt, is balanced.

The invention discloses a dehydrating agent for filtration in an aluminum oxide production process and a preparation method thereof. The dehydrating agent comprises the following components in percentage by weight: 7-15% of a nonionic surfactant, 2-4% of a zwitterionic surfactant, 7-15% of an anionic surfactant, 1-2% of an auxiliary agent, 0.5-2% of an organic amine salt active agent and the balance of water. The dehydrating agent disclosed by the invention is strong in dehydrating effect, green, low in foam and low in cost. The dehydrating agent can change the physical property and chemical composition of the material surface, destroy the structure formed by aluminum hydroxide and water, and effectively reduce the surface tension of water, thereby improving the dehydration performance of aluminum hydroxide. Meanwhile, due to the addition of the auxiliary agent, the surface tension of the dehydrating agent during action is effectively reduced, and the foaming capacity of the surfactant in the dehydrating process is effectively inhibited, so that the dehydrating agent has low foam.