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6740 results about "Pipe fitting" patented technology

Pipe fitting is the occupation of installing or repairing piping or tubing systems that convey liquid, gas, and occasionally solid materials. This work involves selecting and preparing pipe or tubing, joining it together by various means, and the location and repair of leaks. Pipe fitting work is done in many different settings: HVAC, manufacturing, hydraulics, refineries, nuclear-powered Supercarriers and Fast Attack Submarines computer chip fab plants, power plant construction and other steam systems. Pipe fitters are represented in the USA and Canada by the United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada. Fitters work with a variety of pipe and tubing materials including several types of steel, copper, iron, aluminium, and plastic. Pipe fitting is not plumbing; the two are related but separate trades. Pipe fitters who specialize in fire prevention are called Sprinklerfitters, another related, but separate trade. Materials, techniques, and usages vary from country to country as different nations have different standards to install pipe.

A kind of polybutene alloy material and preparation method thereof

ActiveCN102268160AWide molecular weight distributionMultiple active centersPolyolefinHigh surface
The invention discloses a polybutene alloy material and a preparation method thereof, and belongs to the field of polyolefin material, specifically relates to a polybutene alloy material and a preparation method thereof. The polybutene alloy material provided by the present invention comprises, by mass, 50-99% of poly-1-butene, 1-40% of polypropylene and 0-10% of a butane-propylene copolymer. Thepreparation method is characterized by: adopting a TiCl4/MgCl2 supported titanium catalyst for synthesis of the polybutene alloy material through a two-phase polymerization method. The polybutene alloy material provided by the present invention has a core-shell structure, and has advantages of the combination of the excellent impact resistance of the poly-1-butene, the heat resistance and creep property of the poly-1-butene, the low shrinkage rate of the poly-1-butene, the high modulus of the polypropylene, the high surface hardness of the polypropylene, the rapid shaping of the polypropylene, and the like, such that the polybutene alloy material can replace the partial use of the poly-1-butene and the polypropylene. In addition, the polybutene alloy material can be applicable for preparation of the pipe and the pipe fitting, toughening modification of the polypropylene, or the polybutene alloy material can be used as the general polyolefin material.
Owner:QINGDAO UNIV OF SCI & TECH +1

Full corrosion-resistant connection structure of steel lining plastic composite pipeline

InactiveCN102359697AReduce the chance of secondary pollutionEliminate interface rustCorrosion preventionPipe protection against corrosion/incrustationPipe fittingHot-melt adhesive
The invention discloses a full corrosion-resistant connection structure of a steel lining plastic composite pipeline, and belongs to the technical field of connection of the steel lining plastic composite pipeline. The structure comprises a corrosion-resistant ring sleeved on a non-meshing section of an external thread of a steel outer layer, a steel lining plastic composite pipe fitting consisting of a steel outer ring part and a plastic inner ring part, and a composite pipe consisting of the steel outer layer with the external thread, and a plastic inner layer, wherein the external thread consists of a meshing section and the non-meshing section; an annular cavity of which the inner wall is provided with an internal thread section is formed between the steel outer ring part and the plastic inner ring part; the pipe is in threaded connection with the pipe fitting; a solid hot melt adhesive is arranged in the annular cavity; when an alternating magnetic field is formed at the periphery of the joint of the pipe fitting and the pipe, the solid hot melt adhesive is in thread engagement with the steel outer ring part and in sealed connection with the end faces of the steel outer layer and the plastic inner layer; and the corrosion-resistant ring is in sealed connection with the non-meshing section of the pipe. After the scheme is adopted, the problem that the threads of the pipe and the pipe fitting are easily corroded and rusted is solved, and a full corrosion-resistant threaded connection effect is achieved.
Owner:HUAHUI CONSTR GROUP

Feeding and transferring mechanism for pipe fittings with end portions closed

The invention discloses a feeding and transferring mechanism for pipe fittings with end portions closed, and belongs to the field of workpiece machining mechanical equipment. A guide pipe through holeis formed in the upper end of a pipe storage hopper of the feeding and transferring mechanism. A lifting push plate is arranged on a push plate sleeve on the lower side of the pipe storage hopper ina sliding manner. A pipe movement guide plate is arranged on a guide pipe support on the lower side of a discharge guide pipe. A clamping rod limiting clamp is arranged at the upper end of a reciprocating swinging rod. A turnover gear is fixedly arranged on the end portion of one side of a fixed rotating shaft. The middle portion of one side of a turnover connection plate is fixedly arranged on the end portion, along the side of the pipe movement guide plate, of the fixed rotating shaft. The two sides of a pipe transferring belt are wound on and connected to pipe transferring rotation rollerson the two sides of a pipe transferring support correspondingly. A pipe transferring motor drives the pipe transferring rotation rollers to rotate. The feeding and transferring mechanism is reasonablein structural design, the pipe fittings can be conveniently and efficiently arranged and fed in an oriented manner one by one, the pipe fittings can be stably and accurately overturned vertically oneby one, and therefore the pipe fittings can be sequentially conveyed through vertical stations, the automation degree of pipe fitting feeding and processing can be improved, and requirements of machining and using can be met.
Owner:TONGXIANG TANGCHAO ADVERTISEMENT CO LTD

Pipe fitting radial indexing drilling clamp tooling

The invention relates to a pipe fitting radial indexing drilling clamp tooling, which relates to a clamp tooling of a pipe fitting excircle drilling work procedure and solves the problems that each connecting hole on the existing pipe fitting excircle is processed by boring and milling equipment and precise numerical control equipment, and the mass production requirements cannot be met. A drill bush is arranged in each drill bush hole arranged in an indexing disc, each screw rod hole arranged in the indexing disc is matched with one pressing screw rod, in addition, one end of the pressing screw rod is connected with the screw rod hole through screw threads, the other end of the pressing screw rod passes through a press plate to be connected with a pressing screw nut through screw threads, a positioning pin is arranged in a first positioning pin hole, a copper bush is arranged in a copper bush installing hole, a middle shaft is arranged in a middle shaft installing hole and an inner hole of the copper bush, a middle shaft at one end of the copper bush is connected with a screw nut through screw threads, a middle shaft of one end of a first flange is connected with a fastening handle through screw threads, a positioning screw and a positioning threaded hole are connected through screw threads, an indexing pin is embedded in a second positioning pin, and a position limiting pin is arranged in a first position limiting pin hole and a second position limiting pin hole. The clamp tooling is used for processing each hole on the excircle surface of pipe fittings.
Owner:HARBIN JIANCHENG GRP

Pipe fitting sealing property testing device

The invention discloses a pipe fitting sealing property testing device and aims at achieving the effects that the pipe fitting sealing property testing device is convenient to operate, high in testing result accuracy and capable of guaranteeing that the two pipe ends of a pipe fitting are not prone to being damaged due to clamping. The device comprises an air feed pump, a baroceptor, a main rack, two push plate air cylinders, two side racks, a main end cover and a subsidiary end cover, the two push plate air cylinders are arranged on the two side racks respectively, a piston rod of one of the push plate air cylinders is connected with the main end cover, a piston rod of the other push plate air cylinder is connected with the subsidiary end cover, a main elastic sealing ring pad is arranged on the main end cover, a subsidiary elastic sealing ring plate is arranged on the subsidiary end cover, and a main cover air hole is formed in the main end cover. The pipe fitting sealing property testing device has the advantages that the pipe fitting can be positioned to the right position, the sealing property can be guaranteed, and the pipe fitting is not damaged due to clamping; the device is provided with a sealing structure which can be adjusted in a self-adaptation mode, and the sealing effect in the high pressure testing process can be intensified; the device is provided with an assistant positioning structure, the end covers can be prevented from moving backward, the push plate air cylinders can be protected, the sealing effect can be improved, and stability in the testing process can be maintained.
Owner:宁波新合博园林机械有限公司

Water supply and drainage pipeline repair technique adopting size film lining method

A water supply and drainage pipeline repair technique adopting a size film lining method comprises the steps of: (1) dredging and cleaning a pipeline; (2) inspecting a pipeline internal observing video; (3) producing a working pit; (4) welding a lining pipe; (5) plugging, deflecting and transferring water to the pipeline; (6) internally pretreating and repairing the pipeline to be repaired; (7) drawing the lining pipe into the pipeline to be repaired; (8) sealing the two ends of the lining pipe and embedding a pipe fitting; (9) filling water into the lining pipe and pressurizing; (10) preparing size and auxiliary vacuum casting; (11) keeping the internal water pressure of the lining pipe, and supplying water again after the size is solidified; (12) videoing the inner side of the pipeline and recording the videos after the repair; and (13) the step 1 to step 12 belong to repair construction, taking every two continuous inspection wells as a construction working segment, constructing towards the upstream and downstream sequentially from the inspection well which is next to the working pit, after completing all the working pipeline segments, laying a new pipeline in the working pit, refilling the soil and compacting to restore the pavement; and the pipeline has long service life, high water flow, fast construction speed, less pollution and small influence to roads.
Owner:杨兵

Pipe fitting quick connection device

The invention provides a pipe fitting quick connection device, and belongs to the technical field of pipe fitting connectors. The pipe fitting quick connection device solves the problem that sealing performance of an existing pipe fitting quick connection device is poor. The device comprises an outer cylinder with a connection channel, the inside of a cavity of the outer cylinder is provided with a sealing ring assembly and a clamping assembly, the clamping assembly is located on the outside of the sealing ring assembly, a supporting cylinder is coaxially arranged in the outer cylinder, the inner end of the supporting cylinder is provided with a cylindrical positioning portion bent outwards, the outer side wall of the positioning portion is connected with the inner side wall of the outer cylinder, the outer side wall of the supporting cylinder is provided with an annular groove, and a sealing part is embedded in the annular groove. Due to the fact that the pipe fitting quick connection device is provided with the supporting cylinder, stability of a pipe fitting can be improved when the device is inserted into the pipe fitting with a thin pipe wall or a soft pipe body; the supporting cylinder is provided with the sealing part, and accordingly a sealing function is performed on the inner side wall of the pipe fitting; due to combined action of the sealing part, a flat sealing ring and a sealing ring, the pipe fitting is sealed in multiple ways, and stability of the device is improved when the device works.
Owner:许道泽
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