27191 results about "Pipe" patented technology

The invention discloses a setup spring self-recovery energy dissipation brace in the technical field of self-recovery energy dissipation braces. The brace comprises an inner pipe, an outer pipe, a spring, a spring baffle and a guide block; the inner pipe comprises a left inner pipe, a right inner pipe, a first steel pipe, a first steel pipe left baffle, a first steel pipe right baffle, an inner pipe left stopper, an inner pipe right stopper, an inner pipe outer friction plate, a high-strength bolt and an inner pipe connecting plate; the outer pipe comprises a left outer pipe, a right outer pipe, a second steel pipe, an outer pipe left baffle, an outer pipe right baffle, an outer pipe internal left stopper, an outer pipe internal right stopper, an outer pipe inner friction plate and an outer pipe connecting plate; the spring comprises a first spring and a second spring, wherein the first spring is sleeved outside the left inner pipe, and the second spring is sleeved outside the right inner pipe; two ends of the spring are connected with the spring baffle. The brace has the advantages that residual deformation of a structure is decreased, the brace is convenient to construct and easy to maintain and replace after earthquake action, and normal usage state affecting time is shortened.

The automatic argon arc welding and narrow gas submerged arc welding process for circular pipe header seam features the first horizontal and vertical welding with immobile workpiece and using automatic cold welding TIG wire until completing over one third of circle; the subsequent welding in the other two thirds of circle with automatically rotating welding roller frame; and the performing in the identical site of the annular seam assembling and the welding. The welding apparatus for the said technological process consists of roller device and welding frame bogie, and the welding frame bogie on some tracks parallel to roller frame tracks is movable. The present invention has the advantages of automatic operation, raised welding quality, etc.

The invention discloses a telescopic copper pipe component which comprises an inner pipe and an outer sleeve. The outer sleeve is sleeved on the inner pipe. A inner pipe through hole is formed in the center of the inner pipe. A plurality of linear grooves parallel with the central line of the inner tube are evenly distributed on the outer periphery of the inner pipe. Protrusions are disposed on the inner wall of the inner hole of the outer sleeve. The protrusions are disposed in the grooves. By the structure, when the outer sleeve is sleeved on the inner pipe, the protrusions can move linearly along the grooves, and the outer sleeve can move along the inner pipe. In addition, annular grooves are evenly formed in the outer periphery of the inner pipe, and the central line of each annular groove coincides with that of the inner pipe. When the protrusions enter the annular grooves, the outer sleeve can be relatively locked with the inner pipe by rotating the outer sleeve. The telescopic copper pipe is simple in structure and practical.

A pipe thread protector includes a case, a first seal member, and a second seal member. The case is attachable to an end of a pipe to protect a threaded region of the pipe. The case has a cylindrical or frustoconical portion having threads over at least a portion of its length to engage the threaded region of the pipe, and an annular end portion configured to abut a distal end of the pipe. A first seal member is disposed at the cylindrical portion of the case, and a second seal member is disposed at the annular end portion of the case. At least one of the first and second seal members (i) is detachable from the case, and (ii) comprises a material different than a material of the case.

The invention discloses micro-alloying seamless pipeline steel and process for preparation. According to weight percentage, the range of the chemical components of the invention includes that C holds 0.08% to 0.20%, Si is equal to or less than 0.04%, Mn takes 0.60% to 1. 50%, S is equal to or less than 0.015%, P is equal to or less than 0.025%, Al is equal to or less than 0.04%, Ti is equal to or less than 0.04%, H is equal to or less than 2.5*10-4%, O is equal to or less than 25*10-4%, the rest is Fe and unavoidable foreign matters. The process for preparation comprises technique steps, including smelting, refining, continuous casting, hot rolling and slow cooling. Round steel with the size of phi 70 to 150 millimeters can be produced by the process for preparation. The seamless pipeline steel of the invention has perfect anti-sulphide stress corrosion (SSC resistance) capability and anti-HIC property. The pipeline steel which can substitute for welding pipe can be utilized in the filed of oil pipeline and the like, and the invention increases the reliability of material and adaptability of variety, in particular being adaptable for the low submarine temperature and corrosion-resistant environment and for manufacture of thick-walled tubes.

The invention discloses a grouting method of penetrability concrete cracks. The grouting method of the penetrability concrete cracks comprises the steps of drilling holes, burying pipes, sealing cracks and grouting. The drilled holes comprise inclined holes and roulettes. The inclined holes are preferably distributed in the same side or two sides of the cracks. The roulettes are distributed along the cracks to the bottom portions of the cracks. The pipes are buried by gelatinization materials. The cracks are sealed through the chisel groove method and the surface crack sealing method. With regard to stable and unexpanded penetrability concrete cracks (dead cracks) or compressive zone penetrability cracks, the grouting method of the penetrability concrete cracks adopts cement grout to conduct a grouting process, not only is the grouting method environment-friendly, economical and convenient to construct, but also quality effects meet engineering requirements. Besides, durability of materials is good, and strength of the materials is high.

A method for constructing pipe piles while drilling for building or bridge foundations. The construction steps are to cover high-strength prestressed concrete pipes or steel pipes with drill pipes on the ground first, and install impactors and reaming retractable drill bits at the front ends of the drill pipes. , Follow the pipe while drilling, follow the pipe retaining wall, drill to the design elevation, stop drilling, withdraw from the reaming to shrink the drill bit, use the mud pump to clean the mud and sediment, pour concrete into the pipe, and simultaneously inject pressure grout to the outside of the pipe wall , stop when concrete and grout reach the ground; the object of the invention is to propose a construction method with fast construction speed, reliable quality, less material consumption, high bearing capacity of piles, mechanized operation, and environmental protection. In the construction method of bored cast-in-place piles, the use of mud retaining walls pollutes the environment, the hole is easy to collapse during the drilling process, the quality of concrete pouring is unstable, and the prestressed pipe piles are easy to cause the soil to rise. The strength of the pile body constructed by the invention is high. , There is no sediment at the bottom of the pile, and the pile end is completely rock-socketed, which can reach more than 2 times the bearing capacity of the same diameter bored pile.

The invention relates to a wide and thick steel plate for hot-bent elbow pipes at X65-X80 levels and a manufacturing method of the wide and thick steel plate. Especially, proper ingredients, structures and technologies for the steel plate for the elbow pipes at X65, X70 and X80 levels are designed respectively according to different pipe bending technologies of pipe bending factories, and the pipeline steel performance requirement for reaching the related strength levels after hot bending of the pipes is met. The steel plate is 20-40 mm thick and 2,500-4,000 mm wide, the hot-rolled steel plate with excellent toughness, thermal formability and thermal stability is obtained, a solution is provided for steel plates for high-pressure elbow pipes in long delivery pipeline projects, and the usage security of the high-level pipeline steel plate is improved.

The invention relates to a detection sorting device for steel balls The detection sorting device comprises a rack, a feed mechanism, an unfolding mechanism, a stock stop, a detecting mechanism, a sorting mechanism and a material collecting mechanism, wherein the feed mechanism comprises a material storing box, a material discharging hopper and a material discharging pipe; the unfolding mechanism comprises a material transporting guide rail, the material transporting guide rail is a V-shaped linear guide rail, the material discharging hopper is connected with an initiating end of the material transporting guide rail through the material discharging pipe, and the detecting mechanism comprises a light source assembly and a camera assembly; the light source assembly is arranged on the material transporting guide rail in a sleeved mode, the sorting mechanism and the material collecting mechanism are arranged on the tail end of the material transporting guide rail, and the separate collection of defect steel balls and qualified steel balls are realized through the sorting mechanism and the material collecting mechanism. The detection sorting device provided by the invention has the advantages that the automatic feed, detection and sorting of the steel balls are realized, a detection process is that two-dimensional motion of a traditional unfolding disc is changed into single one-dimensional rolling of one-sided steel balls, the detection efficiency is high, a false drop ratio and an omission ratio are low, and the steel balls are not magnetized or the surfaces of the steel balls are not damaged in a detection process.

The invention discloses a karst grouting reinforcement water-stop constructing method, which is to construct according to sizes of karst caves by adopting a principle of from big to small regarding a certain area, construct by adopting a principle of from outside to inside for the karst caves with the same size, and construct by adopting a principle of from the bottom to the top in a vertical direction. On the basis of the construction principles, the method comprises the following steps of: (1) forming grouting holes by adopting a core drill; (2) forming construction exhaust and drainage pressure relief holes; (3) inserting grouting pipes into the grouting holes, wherein the grouting pipes comprise steel pipes, grouting shock pipes and sleeve valve pipes; (4) cleaning the holes, wherein when the step (3) is completed, the grouting pipes are cleaned with clean water; (5) grouting; and (6) drawing out the grouting pipes after the grouting is completed, and blocking the grouting holes with cement mortar or concrete. By adopting the constructing method, the pertinence to karst caves is strong, the grouting quantity is small, the engineering work amount is small, the cost is low, and the effect of filling and reinforcing is good.

The invention relates to high-strength low-temperature steel with high hydrogen induced cracking (HIC) and sulfide stress corrosion cracking (SSC) resistance and a manufacturing method thereof. A low alloy steel component system with ultra-low C content, low Si content, medium Mn content, low Als content, low N content, a little alloyed Ni and Mo and trace Ti and Nb is adopted, Mn/C is more than or equal to 22, the segregation index 1.32 (percent C)*[(1.53 (percent Mn)+1.37 (percent Si)+1.15 (percent Mo)+1.06 (percent Cr)+(percent Cu)+0.86 (percent Ni)]*[(30 (percent P)+10 (percent S)] is less than or equal to 0.060, [(percent Si)+(percent Als)]*(percent C) is less than or equal to 0.0035, Pcm is less than or equal to 0.018 percent, Nib/Ti is 1.5 to 3.5, Ca treatment is performed, Ca/S is 0.80 to 3.00, the microstructure of a finished steel plate product consists of uniform and fine acicular ferrites and a few upper bainites by optimizing a thermal mechanical control processing (TMCP) technology, and the average particle size is less than 10mu m; and the characteristics of high strength, toughness and HIC and SSC resistance are achieved, high heat input welding can be performed, and the steel is particularly suitable for manufacturing a low temperature storage tank, a low temperature pressure steel pipe, an ocean platform in an ice sea area, and the like.

A construction method for a precast energy pile is characterized in that a heat transfer tube is embedded into a hollow steel tube, the hollow steel tube replaces a traditional solid reinforcement and serves as a main reinforce ement of the precast pile, and for being connected with the heat transfer pipe in the precast pile, a heat transfer elbow and a heat transfer tube joint are embedded into a precast pile shoe and a precast pile cap. As the heat transfer tube is embedded into the hollow steel tube, the technical problems of mutual interference, poor concrete compactness, reinforcement corrosion, effect on the overall bearing capacity of a pile foundation and the like caused by binding and embedding of the heat transfer tube and the main reinforcement are effectively solved. Moreover, the embedded tube is higher in survival rate, a large number of piles are conveniently stacked and safely transported, construction period is short, and underground space and construction cost are saved.

The invention discloses a construction method for embedding a pipe in a ground source heat pump pouring pile reinforcement cage. A steel pipe is used for substituting for a solid reinforcing steel bar as the main rib of a pouring pile reinforcement cage, and a heat transmission pipe is embedded in the steel pipe, as a result, problems caused by binding and embedding the heat transmission pipe and the reinforcement cage, including mutual interference, high probability of corrosion of a reinforcing steel bar, effect on overall bearing capacity of a pile foundation and the like, are solved. Compared with the traditional way of binding and embedding the heat transmission pipe and the reinforcement cage, the construction method is higher in survival rate of embedded pipe, compactedness of concrete is high, and embedment of the heat transmission pipe surely does not lower the overall bearing capacity of the pile foundation; compared with another traditional way of drilling and pipe embedding, the construction method greatly shortens construction period and saves underground space and engineering cost. The construction method is simple in construction process, strong in operability, convenient for quality control, and remarkable in economic benefit and heat transmission effect.