258results about How to "Restricted access" patented technology

The invention relates to a networking method of a wireless electricity consumption information acquisition ad hoc network. According to the technical scheme, the networking method of the wireless electricity consumption information acquisition ad hoc network includes the steps that first, the network is established; second, child nodes without access to the network search for a network center coordinator or child nodes with access to the network; third, the child nodes without access to the network which are searching for the network select the network center coordinator or the child nodes with access to the network as ancestor nodes and send network access requests to the ancestor nodes; fourth, after the ancestor nodes receive the network access requests, network access addresses are allocated to the child nodes applying for access to the network; fifth, the child nodes applying for access to the network send the network access addresses and fixed addresses to the network center coordinator; sixth, if the network center coordinator agrees with that the child nodes applying for access to the network have access to the network, the child nodes applying for access to the network successfully get access to the network, if the network center coordinator does not agree with that, reject information is returned to the child nodes applying for access to the network, and after receiving the information, the child nodes applying for access to the network execute the second step to the sixth step till successfully getting access to the network. The networking method of the wireless electricity consumption information acquisition ad hoc network is used in the field of wireless acquisition of electricity consumption information.

The invention provides a compound profile modifying / water plugging agent. The compound profile modifying / water plugging agent comprises the following components in percentage by mass: 0.5-5% of pre-crosslinked particles, 0.1-0.3% of polyacrylamide, 0.1-0.4% of crosslinking agent, 0.04-0.5% of regulator and the balance of water. A preparation method of the compound profile modifying / water plugging agent comprises the following steps of adding a certain quantity of polyacrylamide into water by using a jet mixing hopper, and dissolving polyacrylamide for 30min; then, adding a certain quantity of pre-crosslinked particles, crosslinking agent and regulator, and uniformly stirring. The profile modifying / water plugging agent is good in profile modifying effect, capable of increasing the oil yield and reducing the water content, excellent in salt and temperature resistance, low in cost and simple in preparation method.

The invention relates to a method for running a bridge plug sitting tool by means of differential pressure and a bridge plug sitting tool used by the same. When a bridge plug is sit, the bridge plug is electrified from the ground through a cable, an electromagnetic valve is turned on or a rupture disk is ruptured, a liquid inlet hole is opened, or a clock is turned on to drive an upper mandrel to move, annulus fluid enters into the tool to drive a piston to move upwards due to the differential pressure with an air chamber, the bridge plug is sit, and the piston moves continuously and upwards so as to be released from the bridge plug. The bridge plug sitting tool has three types such as an electromagnetic valve control type, a rupture disk control type and a clock control type, and consists of a cable connecting joint, an upper joint, an upper outer cylinder, a middle outer cylinder, a lower outer cylinder, an adjusting nut, a push rod, one bridge plug connecting joint, an internally-arranged electromagnetic valve, an internally-arranged contact switch, an upper mandrel, a piston, an upper piston rod, a lower piston rod, another bridge plug connecting joint and the like which are in threaded connection with one another. According to the invention, the bridge plug is stable in sitting process, and small in vibration, and when the bridge plug is connected with a perforation hole in parallel, a perforation apparatus can not be vibrated to be broken; and when the bridge plug is released, the contact switch can be touched, so that a conducting wire is disconnected, and the tool provided by the invention is obvious in ground display.

Contacts are created and stored with corresponding contact information in such a way that they can be accessed and utilized by applications from a single contact store. The contact store contains a complete contact definition for each contact so that each of the applications can obtain the appropriate contact information and in the appropriate format from the contact store that is required by the applications. Centralizing the storage of the contact information allows the contact store to incorporate and propagate the changes that are made by the applications to the contact information. Interfaces can also be provided to initiate communications using the contact information and for controlling what contact information will be made accessible to the applications.

The invention discloses a nano silicon dioxide modified polyurethane composite material comprising the raw materials: polytetrahydrofuran glycol, hydroxyl-terminated polyepichlorohydrin, isocyanate, epoxy resin, a chain extender, 1H,1H,8H,8H-dodecafluoro-1,8-octanediol, a catalyst, polypropylene, a maleic anhydride grafted ethylene-octene copolymer, an acrylonitrile-styrene-butadiene copolymer, ethylene-propylene-diene rubber, organic modified nano silicon dioxide, tetrapod-like zinc oxide whiskers, graphene oxide, carbon nanotubes, expanded graphite, tris(2-chloroethyl) phosphate, triphenyl phosphite, tris(2,4-di-tert-butylphenyl)phosphite, di(octane phenol polyoxyethylene)phosphate, polythiazole, and a silane coupling agent. The nano silicon dioxide modified polyurethane composite material provided by the invention has the advantages of excellent heat resistance, good flame retardancy, good water resistance, and high strength.

The invention discloses a process and a system for treating ethylene tar. According to the process, preheated ethylene tar contacts a coking reaction effluent from a delayed coking reaction system ina pretreatment reactor, and a light component and a heavy component are obtained after separation; the heavy component enters the delayed coking reaction system, and the generated coking reaction effluent enters the pretreatment reactor; the light component and hydrogen enter a hydrogenation reaction system, and the reaction effluent is separated to obtain gas, gasoline distillate, diesel oil distillate and heavy oil distillate; and the heavy oil distillate enters a catalytic cracking reaction system, and the catalytic diesel oil obtained after separation enters the pretreatment reaction. Thetreatment system comprises the pretreatment reactor, the coking reaction system, the hydrogenation reaction system, and the catalytic cracking reaction system. With the process and the system of the present invention, the stable long-cycle operation of the whole treatment system can be ensured, and the yield of the light oil product is high.

The invention provides an intelligent entrance guard system. The intelligent entrance guard system comprises a central controller, an entrance guard unit, a wireless communication module, a risk prewarning unit, a health detection unit, a biological recognition unit and a visitor conversation unit, wherein the entrance guard unit is a carrier of all functional modules; the risk prewarning unit, the health detection unit, the biological recognition unit and the visitor conversation unit are connected with the central controller. The intelligent entrance guard system can not only restrict in and out by passages but also guard and protect the personal and property security of residents in rooms; the risk prewarning unit is provided to alarm in case of indoor harmful gases, earthquakes, fire hazards and the like and to automatically open the room doors to enable outside air to flow in; the health detection unit is provided to conduct health scanning detection on persons in and out of the passages, so that the self-health attention of people is improved; the biological recognition and visiting functions are also provided, so that the functions are powerful and the use is convenient.