69results about How to "Good under pressure" patented technology

A water-absorbing agent according to the present invention includes water-absorbent resin particles having an internal cross-linked structure,.wherein a vicinity of a surface of the water-absorbent resin particle is cross-linked with a surface cross-linking agent, and the water-absorbent resin particle has therein a sea-island structure having (i) part containing a first water-soluble multivalent metal salt such as aluminum sulfate and (ii) part not containing the first water-soluble multivalent metal salt. With this arrangement, it is possible to provide a water-absorbing agent having less water-soluble component content, more excellent liquid permeability, and more excellent water retention under pressure than the conventional water-absorbing agent.

The invention relates to a method for increasing the success rate of chemical plugging of a leaking casing damage well. A casing pipe horizontal pushing method and a three-slug theory are adopted for the casing damage well with a casing damage part located within 1,000 m, wherein the front section is a washing slug, formation water is replaced, oil dirt and corrosive products on the outer wall of a casing pipe are washed, the wettability is changed, and a good gelling environment is provided for a plugging slug; the middle plugging stratum is a main body cementing section and can effectively prevent leaking and plug the stratum, and a pressure bearing section can be built to isolate the formation water from the casing pipe; the tail section is an intermittent replacement slug, multiple times of replacement are performed intermittently, the main body cementing section can be checked and improved, the plugging success rate is increased, and the validity is prolonged.

The invention discloses a heat absorption core of a collector used for a solar heat pump water heating system, a naked plate type collector, a collector with a glass cover plate as well as a direct-expansion solar heat pump water heating system. The naked plate type collector and collector with the glass cover plate are connected through an electromagnetic valve and a refrigerant copper pipe and, a PLC (Programmable Logic Controller) controls the open and close of the electromagnetic valve according to different external conditions so as to realize the separated operation and series operation of the naked plate type collector and the collector with the glass cover plate. Refrigerant gas through evaporation and compression enters a plate-type heat exchanger so as to carry out countercurrent flow heat exchange with circulating water, hot water temperature is fed back to a controller through a temperature sensor, and the controller controls the open and stop of a compressor. With the structure, the system has the advantages of high energy efficiency ratio, good environmental adaptation, simple structure and the like and is environment-friendly and energy-saving.

The invention discloses a hardening and tempering technology of an alloy-steel tube, and through the technology, the hardened and tempered alloy-steel tube is high in intensity and hardness, has good abrasion resistance and high plasticity, bears great pressure, and has small deformation and less decarburization. The technology comprises the following steps of: (1) annealing treatment: warming to 870-880 DEG C at the speed of 20-25 DEG C/minute, keeping the temperature for 35-40 minutes, and then cooling to 500 DEG C below; (2) quenching treatment: warming to 930-935 DEG C at the speed of 5-10 DEG C/minute, keeping the temperature for 50-60 minutes, then cooling rapidly at the speed of 190-200 DEG C/second to 320-325 DEG C, and cooling naturally to 30-40 DEG C; and (3) tempering treatment: warming to 500-510 DEG C at the speed of 5-10 DEG C/minute, then keeping the temperature for 230-240 minutes, and then cooling naturally to room temperature, thus the hardened and tempered alloy-steel tube is high in intensity and hardness, has good abrasion resistance and high plasticity, bears great pressure, and has small deformation and less decarburization. The hardening and tempering technology of the alloy-steel tube provided by the invention is mainly applied to the hardening and tempering of the alloy-steel tube for a hydraulic cylinder barrel.

The invention discloses a shell-structure system of a sting-supported cylinder, which comprises a shell, a supporting rod, an inhaul cable, an anchoring node and a turning node. The shell can adopt a net-shell structure with single-layer cylinder surface or with double-layer cylinder surface. The inhaul cable can be connected to the node in the cross cylinder-shell space or to a support. The inhaul cable is connected with the lower part of the supporting rod through the turning rod, and the upper part of the supporting rod is connected to the shell so as to form the shell-structure system of a string-supported cylinder. The shell-structure system of a sting-supported cylinder has the advantages of overcoming the bad stability of single-layer cylinder shell or the thiner double-layer net shell and small striding ability through fully making use of the good compression performance of the shell and high-strength tensile performance of cable material, the shell-structure system of a sting-supported cylinder, being a structure system with large spanning ability, good stability, rationality, economy and convenient application, being universally applied to the common industrial and civil buildings, in particular to the structure system with large span such as convention center and stadium.

The invention relates to a medical treatment ice cap, which comprises an ice cap main body, a connecting channel, and a cooling host machine; the ice cap main body is composed of a soft mat bottom layer, a capillary network cooling layer and an external heat insulation layer; the capillary network cooling layer is fixed on the soft mat bottom layer, and provided with multiple cold media circulating pipelines which are independent to each other; fluid inlet and outlet ends of the multiple cold media circulating pipelines are connected with the cooling host machine through a fluid inlet channeland a fluid outlet channel of a connecting channel by a fluid divider and a fluid collector. By arranging the capillary network cooling layer in the ice cap main body, the capillary network cooling layer is connected with the cooling host machine of an intelligent thermostat; the temperature sensor attached on the capillary network cooling layer can sense the head temperature in real time and transmit the signal to the cooling host; the cooling host machine can control the head temperature through adjusting flow, thus the comfort sense and the treatment effect of a patient are improved.

The invention relates to a non-keel dry-hanging fastener which belongs to the technical field of parts or structures especially used as fixing material during decorating walls of buildings. The non-keel dry-hanging fastener solves the problem that thermal-insulation decoration plates have no keel dry-hangings and comprises a clip and a fastening piece, wherein, the clip is an expansion bolt, and the center of the threaded rod of the expansion bolt is provided with an inner-threaded round hole; the fastening piece is connected with the threaded rod of the expansion bolt by a screw. The fastening piece consists of a top plate and a base plate which are respectively provided with a round hole. The fastener provided by the invention is made of stainless steel or metal, the surface of which is treated to resist against corrosion, and realizes that thermal-insulation decoration plates have no keel dry-hangings, so that thermal-insulation decoration plates can be perfectly fixed on walls. The fastener is applicable to various wall materials, such as concrete, solid and hollow walls and can make constructions and maintenance convenient and quick. The fastener has high loading capacity, high bearing pressure and good tension-resistance performance; besides, the fastener can prevent the impact damage, reduce the loading of a whole building, provide 3-5 cm horizontal adjustment differences for the distorted surfaces of walls, and provide flat surfaces for wall decoration.

The invention relates to the field of building construction, in particular to a drainage consolidation system and method for a soft soil foundation. A plastic drainage plate is vertically arranged inthe foundation; a horizontal drainage pipe is horizontally arranged and connected with the upper end of the plastic drainage plate; the horizontal drainage pipe is further connected with a vacuum pump, and the vacuum pump is further connected with a drainage trough through a pipeline; the horizontal drainage pipe is embedded through a sand cushion layer; a sealing film is further laid on the sandcushion layer; a pile carrier is arranged above the sealing film, and a water filter pipe is arranged between the sealing film and the pile carrier; one end of a siphon is connected with the water filter pipe; and the other end of the siphon is connected with the drainage trough. By means of the drainage consolidation system for the soft soil foundation, the drainage effect of the foundation is improved, so that the drainage consolidation construction has a better effect and higher efficiency; and with application of the drainage consolidation method for the soft soil foundation, the system iscreated more methodically, and the drainage consolidation process of the soft soil foundation is safer, more efficient and environmentally friendly.

The invention discloses a supporting platform for building construction. The supporting platform includes a supporting frame and a supporting table, the supporting frame comprises a supporting base, supporting columns, connecting rods and an adjusting frame, the supporting columns are uniformly arranged at the corners around the top face of the supporting base, the connecting rods are arranged between the left and right supporting columns correspondingly, the adjusting frame includes a fixing rod piece and an adjusting rod piece, and the supporting table includes a main supporting table and anauxiliary supporting table. An installation method includes the following steps that a, the supporting frame is installed; b, a hydraulic lifting column is installed; c, the supporting table is installed; and d, regular maintenance and overhaul are carried out. According to the supporting platform for building construction and the installation method of the supporting platform, overall design isreasonable, the structure is simple, building and disassembling are convenient, and the overall structural strength and stability of the supporting platform are high; and through design of the main supporting table and the auxiliary supporting table, the functionality and security of the supporting platform are additionally achieved, the main supporting table can facilitate standing of an operator, the auxiliary supporting table can facilitate placement of materials and tools, and meanwhile the height of the main supporting table can be adjusted up and down according to the actual demands.

The invention discloses a medium-pressure steel wire reinforced plastic pipeline and a pipe fitting connecting method. The medium-pressure steel wire reinforced plastic pipeline comprises pipes (1, 1' and 1''), inner bushings (2, 2' and 2''), fastening sleeves (3 and 3'), sealing rings (4, 4' and 4'') and connecting members (5, 5' and 5''), wherein the inner bushings (2, 2' and 2'') are arranged inside ports of the pipes (1, 1' and 1'') for supporting; the fastening sleeves (3 and 3') are fixed on the surfaces of the ports of the pipes (1, 1' and 1'') through a buckling device; the sealing rings (4, 4' and 4'') are sleeved at the ports of the pipes (1, 1' and 1''); and the connecting members (5, 5' and 5'') are connected to the fastening sleeves (3 and 3') or directly used for fastening the pipes (1, 1' and 1''). According to the medium-pressure steel wire reinforced plastic pipeline and the pipe fitting connecting method which are disclosed by the invention, an engineering medium-pressure pipeline and construction connecting scheme is developed, and the problem of pipe fitting connection in the application of the heavy-caliber high-pressure steel wire reinforced plastic pipeline is solved; and the caliber of the pipeline can reach 400mm, and the pressure can reach 10Mpa. The medium-pressure steel wire reinforced plastic pipeline and the pipe fitting connecting method can be better applied to engineering environments with high requirements, such as emergency transportation and the like.

The invention relates to a construction technology for forming a railway crossing by pouring of concrete. The construction technology comprises the following construction steps: firstly, excavating a foundation pit; then fabricating an integral mould on site; and finally, mixing concrete paste by adopting a filling machine. The obtained railway crossing of the structure is good in integrity, a road bed is stable, bearing pressure is high, the 'twist warp' phenomenon of a track, caused by mud pumping of the road bed and track settlement, is avoided, and operation security of a train is guaranteed; besides, a rim channel of the railway crossing is subjected to integral pouring, so that a 'pad derailment' accident caused by the fact that a rim channel of a steel rail is easy to deviate and run off is completely eradicated. Therefore, an automobile, a non-motor vehicle and pedestrians can be as steady and immovable as on a dry land when passing through the railway crossing, heavy load resistance is realized, the service life is long, one-step construction forming and maintenance-free using effect are achieved, and manpower and materials are greatly saved for an enterprise.

The invention relates to a glass fiber net reinforcement part, an exterior wall heat-preservation anti-cracking structure and a construction method of the exterior wall heat-preservation anti-cracking structure. The glass fiber net reinforcement part is of an integral sheet structure formed by two fixing sheets with the same shape and a connecting bridge connected between the two fixing sheets, and a threaded hole penetrating through a screw is formed at the center position of the fixing sheet. In addition, the glass fiber net reinforcement part is designed to be used for reinforcing the connecting strength of an anti-cracking mortar layer and a heat preservation layer, the glass fiber net reinforcement part has a simple structure, has low cost, can be constructed conveniently, and has a good fixing effect, can compensate the strength loss when the binding power between the anti-cracking mortar layer and the heat preservation layer is low, and can ensure the bonding quality and the construction reliability of the follow-up surface layer, the construction operation is simple, the construction difficulty is not increased, the original construction quality and the construction efficiency are not influenced, the using amount of the anti-cracking mortar can be used to a certain extent, the cost is reduced and the glass fiber net reinforcement part can be widely applied to exterior wall construction.

The invention relates to a safety can for preventing an explosion of a liquefied petroleum gas cylinder. The safety can comprises a can body and a can cover, wherein a supporting rod is fixedly arranged on the upper part of the outer side wall of the can body; a connecting rod is vertically rotatably arranged on the middle part of the can cover; the can cover can peripherally rotate around the connecting rod and at a top opening of the can body; the upper end of the connecting rod is bent toward the outer side of the can body and the connecting rod is hinged with the supporting rod through a hinge located at one end, away from the can body, of the supporting rod; an opening handle is fixedly arranged at the top of the can cover; a plurality of fixture blocks are fixedly arranged along the peripheral direction of the inner wall of the top opening of the can body; clamping slots corresponding to the fixture blocks are formed in the peripheral side wall of a plug part of the can cover, respectively; gaps are formed between the adjacent clamping slots and in the peripheral side wall of the plug part of the can cover; after the gaps are rotated along with the can cover till the corresponding fixture blocks are located in the corresponding gaps, the fixture blocks are separated from the plug part of the can cover through the gaps; an airtight handle extending toward the outer side of the can body is arranged at the top of the can cover. The safety can has beneficial effects of simple structure, convenience in operation, quick opening and closing and excellent pressure-bearing and airtight property.

The invention discloses an oil-resisting rubber hose of an automobile with a good anti-swelling property and in particular relates to the technical field of hoses of automobiles. The oil-resisting rubber hose comprises two joining steel pipes, wherein a hose body is fixedly arranged between the two joining steel pipes and an oil inlet joint and an oil outlet joint are separately mounted outside the two joining steel pipes; the hose body, the two joining steel pipes and the oil inlet joint and the oil outlet joint form a hose unit; the oil inlet joint and the oil outlet joint are connected to the two joining steel pipes through clamping structures; connectors are fixedly connected among different hose units, and baffle plate assemblies are arranged in the connectors. In the invention, the whole oil-resisting rubber hose of the automobile has excellent acid and alkali resistance, swelling resistance and aging resistance and is provided with a better disassembling and assembling structure, so that the mounting and detaching flexibility is improved. The oil-resisting rubber hose of the automobile is operated more conveniently. Meanwhile, a quick flow stopping operation can be achievedunder overhauling or accidental conditions, so that the safety coefficient is high.

The invention relates to a 0.6kV and 1kV environment-friendly-type ratproof and ant-prevention power cable. The cable comprises three copper conductors. Each copper conductor is provided with an insulating layer so as to form an insulation wire core. A Filling is arranged outside the three insulation wire cores and a low-smoke halogen-free wrapping tape is extruded on an outer portion of the three insulation wire cores so as to form a cable core. A low-smoke halogen-free polyolefin inner sheath is arranged outside the cable core. A steel band armor layer is arranged outside the inner sheath. The steel band armor layer is a double-layer clearance-type galvanized steel strip. A low-smoke halogen-free flame-retardant polyolefin outer sheath is arranged outside the steel band armor layer. A nylon sheath is arranged outside the outer sheath. By using the cable of the invention, the structure is simple, a service life is long, heat resistance performance is good, ultraviolet ray resistance performance, oil resistance performance and chemical property resistance performance are possessed and the cable is safe and environmental-protection.

The invention discloses a double-H-shaped concrete rail beam of a rubber-tyred tram and a construction method threof. The double-H-shaped concrete rail beam is arranged on piers and comprises a plurality of guide rail beam span sections, and every two adjacent guide rail beam span sections are connected in a chaining mode. Each guide rail beam span section comprises four webs, two bottom plates and a transverse partition plate; the four webs and the two bottom plates are combined into a double-H-shaped structure and are connected and combined into an integrated structure through the transversepartition plate; each web plate is of a structure with an I-shaped cross section, and embedded wear-resistant steel plates are arranged at the top end of each web plate and one side end of the top ofeach web plate; each transverse partition plate is located below the bottom plates and comprises two end transverse partition plates and a plurality of middle transverse partition plates. The two endtransverse partition plates are located at the two ends of each guide rail beam span section, and the multiple middle transverse partition plates are sequentially arranged. Compared with an existingsteel guide rail beam, the double-H-shaped concrete rail beam is large in overall rigidity, good in driving comfort, low in noise, good in durability of a concrete structure and small in later maintenance amount.

The invention provides a concrete conveying bent tube. The concrete conveying bent tube comprises a double-layer tube body, wherein the double-layer tube body comprises a tube outer layer made of low-carbon steel and a tube inner layer made of wear-resisting alloy; the thickness of one side of the outer arc of the tube inner layer is gradually reduced from the middle to the two ends; and the thickness of one side of the inner arc of the tube inner layer is gradually increased from the middle to the two ends. The concrete conveying bent tube comprises the double-layer tube body, and the double-layer tube body comprises the tube outer layer made of low-carbon steel and the tube inner layer made of wear-resisting alloy, wherein the structure of the tube inner layer is designed by combining abrasion and a stress working condition of the concrete conveying bent tube in a construction process, the thickness of one side of the outer arc is gradually reduced from the middle to the two ends, and the thickness of one side of the inner arc is gradually increased from the middle to the two ends, so that a weak link of the structure of the concrete conveying bent tube is reinforced, and therefore, the concrete conveying bent tube disclosed by the invention is more reasonable in design, is resistant to wear and impact, is good in pressure bearing, and the service life of the concrete conveying bent tube is prolonged. The invention also provides a manufacturing method for the concrete conveying bent tube.

The invention discloses a large-diameter FRP pipe jacket type hydraulic test device, which comprises a cantilever arm and a sleeve sleeved on the cantilever arm, the pipeline to be tested is sleeved outside the sleeve, the sleeve and the pipeline to be tested The two ends are sealed and connected, and the middle section forms a cavity interlayer for hydrostatic testing. The structure design of this application is reasonable, easy to install and disassemble, saving time and procedures; the overall structure is stable, strong pressure bearing; the cavity interlayer used for hydraulic test is small in volume, the cross-sectional area of ​​the interlayer is small, and the formed axial force is small, And the test water consumption is less, and the hydraulic test speed is fast; through the sleeves of different specifications, it is used for the hydraulic test of multi-standard FRP pipes, which is more flexible and widely applicable.