130results about How to "Leak-proof" patented technology

The invention is a recycled solidfree micro-foam drilling fluid or a completion fluid, which comprises the following components in parts by weight: 1. 2-3 parts of recycled solidfree micro-foam composite treatment agent SD-LNA; 2. 0.5-1 part of low-density solidfree tackifier SD-LNV; 3 0.5-1 part of low-density modifier SD-LFD; 4. 0.5-1 part of low-density foam stabilizer SD-LFS; 5. 0.5-1 of low-density flow type modifier SD-LFR; and 6. 100 parts of water. According to a normal preparation method, the above substances are added into water successively, mixed and stirred evenly under normal temperature and normal pressure. The invention has the advantages of low density, high viscosity, small low fluid loss, good lubricating property, strong landwaste suspension property, easy maintenance,fine cleaning capability of wells, fine inhibitory capability on clay and shale, no micro-foam convergence, recycled use and the like, can be widely applied in engineering such as petroleum, geologicdrilling and the like, is particularly applicable to construction technology of well drilling and well completion of low-pressure reservoir and exhausted reservoir.

The invention relates to a boiler chimney and the method for forming inner-wall protective element. The inventive boiler comprises an outer frame and a liner. Wherein, said liner has a inner-wall protective, which is formed by a polymer silicate solidify layer, a epoxy paint solidify layer while said two layers can be resistant to acid and high temperature, and a strength layer; the polymer silicate solidify layer is fixed on the inner surface of liner; the epoxy paint solidify layer is fixed on the polymer silicate solidify layer; the strength layer is glass fiber grid cloth, which is extended and embedded into the polymer silicate solidify layer, or individually embedded into the polymer silicate solidify layer and the epoxy paint solidify layer to form the inner-wall protective element. Said invention has lower cost, the high temperature resistance, antisepsis property and the anti-leakage property.

The invention discloses an automatic preparation method of a SiCf/SiC composite material flame tube. The preparation method comprises the following steps: preparing an interface layer from SiC fibersby adopting chemical vapor deposition, so as to obtain SiC fibers with a continuous interface layer; performing unidirectional tape laying and filament winding on the SiC fibers with the continuous interface layer according to the fiber volume and fiber orientation obtained by simulation calculation, so as to obtain net size forming preform; performing densifying treatment on the obtained preformby adopting a reactive melt infiltration process and the chemical vapor deposition process; preparing an environmental barrier coating on the surface of the obtained preform; finally, continuously preparing a thermal barrier coating on the surface, thereby fully intelligently obtaining the high-density SiCf/SiC composite material flame tube. The SiCf/SiC composite material flame tube prepared withthe method disclosed by the invention has the characteristics of high temperature resistance and long service life and also has the advantages such as low thermal expansion coefficient, high thermalconductivity, high thermal shock resistance and excellent mechanical property. Meanwhile, the preparation method is high in degree of automation, short in production cycle, low in cost and controllable in quality.

The invention relates to a network security management method and a system thereof. The method comprises the following steps that: encrypted tunnels are established in a safe network card and a safe switch use certificate; the safe network card requires the identity authentication of the safe switch; if the identity is qualified, the safe switch distributes a communication key to the safe network card; otherwise, the failed authentication information is sent back; after the safe network card acquires the key, the local data is started to be encrypted and decrypted; and the generation of the IP protocol communication is realized. The system has a structure which is as follows: a controlled host computer is connected with the safe network card for realizing the function of the identity authentication, the key management, the communication and encryption and the local data encryption; and the safe network card is connected with the safe switch for the strategy management, the configuration management, the user identity authentication of the safe network card and the distribution of the communication key. The method and the system can realize the three-level defense of the information source defense, the information transmitter defense and the information user defense with perfect safety functions and have the characteristics of disclosure prevention and high safety degree.

The invention discloses a ceramic fiber raw material automatic matching, mixing and charging device and a control method, and belongs to the technical field of refractory fiber production equipment. The device and the control method solve the problem in the prior art that the ratio of ceramic fiber raw materials is inaccurate, a lot of dust is generated in manual charging and discharging, the labor intensity is high, the environment and the health of workers are affected, the manufacturing cost is high, the work efficiency is low, the charging and discharging modes of the traditional mixing equipment are not environmentally friendly, and the degree of automation is low. The device comprises a storage device, a weighing device, a mixing device, a packaging device, a transportation device and an electrical control system arranged in sequence from top to bottom. The ceramic fiber raw material automatic matching, mixing and charging device and the control method are high in degree of automation, stability and safety factor, improve the working environment, achieve automatic charging and discharging of raw materials and mechanical lifting of the raw materials, greatly reduce labor intensity of the workers, save manpower and electricity and is short in mixing time, safe, sanitary and environmentally friendly.

The invention relates to a construction process for a house which is formed integrally, which is characterized in that mainly using steel structure, using metal expansion net as a non-dismantling formwork, using small U-shape steel as a frame to fix as the external walls of the building, controlling the concrete material proportion and finishing the casting of the whole building in one time from ground floor wall columns, second floor plate, second floor wall columns and third floor plate to roof, stair wells and parapet walls. The process of the invention can reduce the construction flow time of the house to minimum, reaches short working period of the whole project, has low cost, long life, large span, environment-friendly, easy casting, beauty shaping, and excellent leakage-proof, strong shock resistance and low affect to construction in cold days.

The technological process of making horizontal polyethylene storage tank integral support includes the following steps: 1. preparing material through mixing linear low-density polyethylene and linear high-density polyethylene in the weight ratio of 100 to 10-20; 2. making tank steel lining; 3. preparing mold; 4. assembling mold and clamping mold; 5. rolling plastic to form the tank through rolling in roller rotation speed of 30-40 rpm, baking at tank wall temperature of 170-250 deg.c for 40-350 min and curing for the plastic to be attached to the surface of the steel lining; and 6. cooling and demolding. The storage tank thus produced has the advantages of once integral formation, no seam, high impact strength, ageing resistance, light weight, acid and alkali resistance, long service life, etc.

The invention relates to a multifunctional gas bead gel coat, which comprises sleeves(10), a collar(20) and a body(30) and is made of airtight fabric(1) and a plurality of air sacs(2) made of the same material as the airtight fabric and arranged at the lower side of the airtight fabric(1) and combined with airtight fabric(1) as a whole body, wherein, the airtight fabric(1) and the air sacs(2) are made of flame retardant adhesive film. The invention is characterized by the anti-wind, anti-rain, anti-snow, anti-hail, anti-stumbling, anti-drowning functions , and especially being suitable for being used as winter clothing, raincoats, learning swimsuits, lifejackets, and ski-wear of children. If a metal film is added at the side next to the human body, an effect of insulation is increased; by using double-sided glue paper, the cutting method of the invention includes: at first, the fabric is fixed on a cutting bed; then the double-sided glue paper is stuck between the upper layer of the fabric and the lower layer of the fabric to form a multilayer; at last, a cutting paperboard sample is stuck at the top layer of the fabric and the fabric is cut according to the sample; tablet fabrics which are cut are blended and welded into the coat by a welding machine. The method has the advantages of simple operation and low cost.

Firstly, the invention provides an organic phase change microcapsule. The phase change microcapsule has a core-shell structure, the core is a capsule core, and the capsule core comprises one or more components of paraffin, n-octadecane and n-tetradecane; the shell is a capsule wall and comprises a silicon dioxide component; the particle size of the phase change microcapsule is 100-200 [mu] m, thephase change enthalpy is 120-200 KJ/Kg, and the phase change temperature is 29-40 DEG C. Secondly, the invention provides an organic phase change microcapsule composite heat dissipation material whichcomprises an aluminum plastic film and the organic phase change microcapsule, and the organic phase change microcapsule is coated with the aluminum plastic film so that the unstable capsule core material can be protected from being eroded by the external environment. Finally, the invention provides a preparation method of the organic phase change microcapsule composite heat dissipation material.The preparation method sequentially comprises the following steps: preparing a water phase, preparing an oil phase, preparing an emulsion, preparing a capsule wall, carrying out spray drying, packaging with the aluminum plastic film and the like, and has the advantages of simplicity and rapidness in operation and suitability for industrial production.

The invention discloses a method for constructing poured airtight walls of coal mines. The method includes manufacturing flexible molds and suspending the flexible molds in dug grooves with corresponding sizes by expansion pipes; allowing anchor rods on two sides of each dug groove to penetrate preserved anchor rod holes in the corresponding flexible mold; carrying out pouring twice, to be more specific, injecting inorganic solidifying materials into the flexible molds by concrete pump trucks to form solidified filling bodies at first, injecting expansion roof contact materials into the molds by grouting machines to form expansion filling bodies after the inorganic solidifying materials are completely coagulated, carrying out pump pouring on wall bodies and then forming the airtight walls with reinforced concrete structures by the walls and the anchor rods. The method has the advantages that the different materials are injected into the flexible molds twice, accordingly, the strength and roof contact effects of airtight wall bodies can be guaranteed, and the wall bodies prepared by the aid of the method are simple in structure; each airtight wall only comprises the single corresponding wall body and is mechanically constructed, accordingly, the costs of the airtight walls can be reduced, and the efficiency can be improved.

The invention discloses a combination valve with the speed governing, reversing and overflow functions, and relates to the technical field of combination valves. The combination valve with the speed governing, reversing and overflow functions comprises a pressure reducing valve, a throttle valve, a safety valve, a manual reversing valve and a main valve body, wherein hydraulic oil enters the pressure reducing valve through an oil inlet in the main valve body, a speed governing valve with the throttle governing function is formed by the pressure reducing valve and the throttle valve, the oil outlet of the throttle valve is connected with the oil inlet of the manual reversing valve, and the manual reversing valve is connected with an outside executive component. When the pressure of the executive component is overhigh, the safety valve is opened to unload, and the direction of oil inlet and outlet of the executive component can be changed by changing the oil feed position of the manual reversing valve; because the structure of the main valve body is designed, and the pressure reducing valve, the throttle valve and the safety valve are each of a valve element and valve sleeve type structure, manufacturing and installation are convenient; and the special structural design that a sliding rod, a throttle valve end cover and an adjusting handle are arranged from inside to outside is adopted, oil is prevented from leaking, and therefore, the combination valve with the speed governing, reversing and overflow functions has the advantages of being capable of preventing leakage, simple in oil-way structure, compact in structure, safe, reliable, convenient to manufacture and the like.

An electric weather shed comprises at least one ceiling installed on a semi-open roof; each ceiling comprises a track mechanism and a baffle plate mechanism which can completely cover an open portion; each track mechanism comprises a left longitudinal track and a right longitudinal track which are symmetrical and parallel to each other; each left longitudinal track and the corresponding right longitudinal track are respectively installed on longitudinal supporting frames at left and right sides of the corresponding open portion and extend to an upper side of an enclosed portion; each baffle plate mechanism is slidably installed on the corresponding track mechanism via a walking guiding mechanism; and each baffle plate mechanism can move or stop back and forth over the corresponding open portion and over the enclosed portion along the corresponding track mechanism. According to the apparatus, residents can control each baffle plate mechanism to move to any position over the corresponding open portion or the enclosed portion to shield or enjoy sunlight, rain, dew and ice according to self demand, the electric weather shed is simple and rapid in operation and has heat insulation and leakproof effects, and high quality lives of the residents are substantially satisfied.