31results about How to "Solving Stress Problems" patented technology

The invention discloses a component for shielding neutronic reactor core. The component consists of three parts: a head part, a middle part and a tail part; wherein, the head part is composed of a manipulation head and an upper transitional joint. The manipulation head is inosculated with component handling equipment and is also provided with an outlet hole for sodium; the external side of the upper transitional joint is provided with a locating block to guarantee the radial positioning among components, and the upper transitional joint is welded on the upper surface of a hex wrapper tube. The middle part is composed of a hex wrapper tube and a shield which is arranged in the wrapper tube. The tail part is composed of a lower transitional joint and a pin. The lower transitional joint is welded on the bottom surface of a hex wrapper tube and the pin is provided with an inlet hole for sodium. The invention uses high-density and hot-pressing a boron carbide pellet to guarantee that the boron carbide pellet dose not escape out of a rod after cracking, and at the same time an absorbing rod adopts a ventilation-typed top end plug to extract the helium gas produced in the B-10 (n, Alpha)reaction. The technical proposal of the invention is not only practical but also solves the bearing pressure of a casing on the absorbing rod effectively.

The invention relates to the technical field of oil field well drilling and completion, in particular to an open hole staged fracturing construction method of a dual-branch horizontal well. The methodcomprises the following steps that completion and drilling of a main well hole are firstly carried out, a main well hole open hole staged fracturing completion tool is lowered through a drilling liner hanger, a lowering branch well windowing system is in tie-back connection with the drilling liner hanger, and windowing construction and branch well hole drilling are completed; and a branch well completion window hanger is utilized for lowering the branch well hole open hole staged fracturing completion tool into a branch well hole, and window communicating of the main well hole and the branchwell holes is achieved. On the basis of a four-stage branched well, branched well fracturing is carried out efficiently, a drilling machine does not need to be carried repeatedly, main and branched well hole fracturing construction is completed continuously, the drilling and completion construction efficiency is improved, the well building cost is reduced, the well control risk is reduced, and theapplication field of branched wells is further widened.

The invention discloses a quenching apparatus and method of red coke in the coking industry. A quenching tank comprises a quenching tank body with the top provided with a red coke feeding opening and with the bottom provided with a coke discharging opening, a red coke feeding opening tank cover, and a coke discharging opening sealing mechanism; the upper portion of the quenching tank body is provided with a steam discharging opening and a waste gas discharging opening, the steam discharging opening is connected with a steam purifying device, and the waste gas discharging opening is connected with the inlet of a waste gas treatment device or is directly connected to atmosphere; and the wall of the quenching tank body is provided with water spray tubes for spraying water to the tank, the water spray tubes are respectively arranged in a layered manner along the height direction of the quenching tank, the water spray tubes in various layers are individually fed with water or/and different circumferential parts of the same layer are individually fed with water, the radial center position of the quenching tank body is provided with a water spray tube for spraying water to coke in the quenching tank, and the center water spray tube is individually fed with water. The apparatus and the method have the characteristics of less investment, low running cost, short quenching time, heat energy recovery and no pollution.

The invention relates to a concentrating solar photo-thermal and photoelectric mixed collector. The collector comprises quartz heat colleting tubes which are internally filled with semitransparent liquids, a photovoltaic cell and a cooling channel thereof. The collector further comprises reflectors arranged on two sides of the quartz heat collecting tubes, quartz glass tubes externally surrounding the quartz heat collecting tubes, the photovoltaic cell and the battery cooling channel, metal end covers at two ends of the quartz glass tubes and thermal expansion counteracting structures. The quartz glass tubes tightly seal the heat collecting tubes in a vacuum environment, so that the heat loss of the heat collecting tubes is reduced; the quartz heat collecting tubes are designed as single-sided or double-sided concave channels, so that the incident rays at the photovoltaic cell are more uniform, and therefore, the photoelectric efficiency is improved and the pressure bearing capacities of the quartz heat collecting tubes are improved; and the thermal expansion counteracting structures absorb axial thermal deformation at a high temperature of the heat collecting tubes. Compared with the prior art, the solar utilization ratio of the photo-thermal and photoelectric mixed collector is effectively improved, the problems of thermal expansion and pressure resistance of the heat collecting tubes are solved, and the stability of the mixed collector is improved.

The invention discloses a drinking machine with a zero-pressure hot tank and a method for controlling the drinking machine, and belongs to the technical field of drinking machines. The drinking machine and the method are designed for solving the problem of deficiency of zero-pressure hot tanks for existing devices. The drinking machine with the zero-pressure hot tank comprises a water outlet pipe, the hot tank and a wastewater pipe. The water outlet pipe is connected to a water outlet end of the hot tank, the wastewater pipe is arranged between an inlet and an outlet of the water outlet pipe in a connected manner, and a wastewater electromagnetic valve is arranged on the wastewater pipe; heated and expanded water in the hot tank can flow through partial pipelines of the water outlet pipe and then can be drained via the wastewater pipe when the hot tank is in a heating state and the outlet of the water outlet pipe is closed. The method for controlling the drinking machine includes communicating the hot tank with the air via the partial pipelines of the water outlet pipe and the wastewater pipe when a value of the internal pressure of the hot tank is larger than zero and the outlet of the water outlet pipe is closed. The drinking machine with the zero-pressure hot tank and the method for controlling the drinking machine have the advantages that the hot tank can be assuredly always in a zero-pressure state, accordingly, crack on a tank body of the hot tank due to cyclic fatigue stress can be completely eradicated, and potential safety hazards can be eliminated.

The invention discloses a high-temperature-resistant and high-pressure-resistant stirring intermediate container device and a porous medium displacement experiment system, wherein the high-temperature-resistant and high-pressure-resistant stirring intermediate container device comprises an intermediate container and a stirring mechanism; the intermediate container comprises a cylinder body, an upper end cover and a lower end cover; the upper end cover and the lower end cover are screwed and sealed with the cylinder body through threads, and the stirring mechanism is arranged in the intermediate container; axial through holes are formed in the upper end cover and the lower end cover; two-way valves are connected to the top of the upper end cover and the bottom of the lower end cover; the stirring mechanism is of a cylindrical structure, the outer diameter of the stirring mechanism is matched with the inner diameter of the cylinder body, the side face of the stirring mechanism moves up and down along the inner wall of the cylinder body, and the stirring mechanism is provided with a piston mechanism for sealing and isolating the upper part and the lower part of the cylinder body. Thestructure of an existing intermediate container is improved, so that the intermediate container device can resist high temperature and high pressure, the stirring function is achieved, the battery capacity can be changed by increasing or decreasing the number of battery packs to meet different stirring time requirements, and meanwhile, a control system is improved so that stirring can be better achieved.

The invention discloses a gas water heating device, and relates to the field of water heating devices. The gas water heating device comprises a combustor, a combustion chamber, a lower heat exchanger, a lower fume collection chamber, an upper heat exchanger and an upper fume collection chamber, which are sequentially mounted from bottom to top. The upper heat exchanger is horizontally arranged and adopts a tubular structure. Flanges are respectively arranged at two ends of the upper heat exchanger. A seal ring and a seal cover are arranged on the outer side of each flange. A water inlet pipe and a gas exhaust pipe, which extend outwards, are arranged at the top of the upper heat exchanger separately. A communicating pipe extending outwards is arranged at the bottom of the upper heat exchanger. A plurality of heat exchange pipes are arranged in the upper heat exchanger. The lower heat exchanger adopts a structure formed after the upper heat exchanger is inverted. Compared with the prior art, the gas water heating device has the advantages that the problem that water tube heat exchange is sensitive to scale is solved, the problem of bearing pressure by a fire tube type heat exchange water liner is solved, and besides, since spiral water flow generated by the heat exchange pipes increases the water flow speed, the scale precipitation is reduced, and the heat exchange efficiency is improved.

The invention provides a method and a device for preparing CO (Carbonic Oxide) gas in real time. The device for preparing the CO gas having the content of 2-10% in real time comprises a cylinder, a support plate, an adapter, a contraction section, a support disc and an aluminum silicate fiber felt. The contraction section of which the taper is 30 degrees is formed at the lower end of the cylinder, while the support disc is welded on the port of the upper end of the cylinder. One end of a charging pipe penetrates through a via hole formed in the support disc and then is mounted in the cylinder. One end of an exhaust pipe penetrates through the via hole formed in the support disc and then is mounted in the cylinder. One end of a gas inlet pipe penetrates through the via hole formed in the support disc and then is mounted in the cylinder. While the CO gas is prepared, in order to prevent thermal treatment hydrogen embrittlement of ultrahigh-strength steel and solve the problem that hydrogen is contained in the existing thermal treatment protective atmosphere, the CO gas is taken instead of H2 and oxygen-free thermal treatment of products in a controllable atmosphere is realized.

The invention belongs to the technical field of hypersonic wind tunnel tests, and discloses a flexible pipeline device for mixed heating gas jet supply of a hypersonic wind tunnel. The flexible pipeline device comprises a flexible hose, a hard pipe and a fixing device, the middle section of the flexible hose is a hose, and two ends are flanges; the hard tube and fixing device comprises a hard tube which is arranged along the windward side of a mechanism curved knife of the attack angle mechanism of the hypersonic wind tunnel and extends from bottom to top, and a fixing device for fixing the hard tube on the windward side of the mechanism curved knife. A hose adapter is arranged at the inlet end of the hard pipe, and a lens gasket is arranged on the end face of the hose adapter and used for being sealed with a flange connector of the flexible hose; and the outlet end of the hard pipe is provided with a flange connected with an air inlet pipe of a test device. The flexible pipeline device solves the gas supply problem of heating jet flow under high temperature, high pressure and variable attack angle, and has engineering application value.

The invention belongs to the technical field of petroleum geological prospecting instrument supporting equipment, and particularly relates to a pressure bearing pole plate for a logging instrument. According to the pressure bearing pole plate for the logging instrument, the pressure bearing problem that a pole plate is internally provided with a cavity and related measuring device pole plates needto be arranged internally can be effectively solved. The pressure bearing pole plate for the logging instrument includes a pole plate bottom casing, the two ends of the pole plate bottom casing are provided with an upper joint and a lower joint respectively, a pressure bearing plug is inserted at the position of an opening of the upper joint, an upper pole plate casing is mounted over the pole plate bottom casing, and an electrode is mounted on the upper pole plate casing. An upper oil injection port is disposed at the position of the upper joint, and a lower oil injection port is disposed atthe position of the lower joint. The upper oil injection port and the lower oil injection port are respectively communicated with an inner cavity formed after the installation of the pole plate bottom casing and the upper pole plate casing is completed.

The invention discloses a short-section type oscillation cavity for monitoring gas components of a natural gas pipeline, which comprises a short-section pipe body connected to a measured natural gas long-distance pipeline, wherein the short section pipe body comprises a sieve type inner layer pipe, a resin coating, an inner reflection layer and an outer reflection layer which are coaxially arranged from inside to outside, and an annulus structure is arranged between the inner reflection layer and the outer reflection layer; the inner reflection layer comprises a sieve type outer layer pipe andan inner mirror reflection layer arranged on the outer surface of the sieve type outer layer pipe; the outer reflection layer comprises an outer steel pipe and an outer mirror reflection layer arranged on the inner surface of the outer steel pipe; the sieve-type inner-layer pipe, the resin coating and the sieve-type outer-layer pipe form a filtering permeation layer for filtering natural gas; theinner mirror reflection layer, the annular structure and the outer mirror reflection layer form an optical oscillation cavity used for containing gas molecules permeating into the annular structure,and meanwhile an optical loop is formed. According to the invention, real-time monitoring of natural gas pipeline gas components and simultaneous on-line collection of multiple components are realized.

The invention discloses a hot water supply system comprising a vacuum tube solar collector, a heating box and copper pipes, wherein the copper pipes are copper pipe rows which are connected and are located in the heating box; one end of the copper pipe is communicated with a tap water pipe and the other end of the copper pipe is connected with a water discharging pipe; the vacuum tube solar collector and the heating box form a circulation system by two pipes. When the hot water is needed, cold water is filled to the copper pipes; the hot water in the vacuum tube solar collector is filled to the heating box so as to heat the cold water in the copper pipe. Therefore, the hot water can be used when being heated, so that no water deposits exist and water health is ensured. In addition, due to an electronic control valve arranged on the copper pipe where the cold tap water is filled, no water exists in the copper pipe when hot water is not needed, so that the water pressure problem is solved.