63results about How to "Reduce the risk of leakage" patented technology

The invention discloses an attribute-based searchable encrypted electronic medical record system and an encryption method. The system comprises a key distribution center and a cloud storage center, wherein the key distribution center generates public parameters and a master key to initialize the system; the key distribution center generates and distributes keys containing user attributes to users;a data owner sets an access strategy before uploading medical record data, encrypts the data, and then uploads the data to the cloud storage center; a data visitor generates a trap door according tokeywords and the keys, and provides a query request to the cloud storage center; and after receiving the query request, the cloud storage center determines to return corresponding encrypted data to the data visitor according to the trap door and keyword ciphertexts. According to the scheme of the invention, the difficulty of key management in a multi-user environment can be reduced, data users canbe supported to accurately query the keywords of the ciphertexts, guessing attacks of the keywords can be resisted, and the leakage of privacy data can be effectively prevented.

The invention relates to a building waterproof heat-preservation exhaust compound system, which comprises a heat-preservation layer, a waterproof layer, a waterproof protective layer and an exhaust passage, and is characterized in that the heat-preservation layer comprises paved heat-preservation boards, the lower surfaces of the heat-preservation boards are provided with exhaust grooves, the exhaust grooves of all the heat-preservation boards are connected into the exhaust passage, one end of the exhaust passage is connected into a flue through a connecting pipe, and the waterproof layer and the waterproof protective layer are covered on the heat-preservation layer in turn. The building waterproof heat-preservation exhaust compound system has the following advantages that: the system is a heat-preservation waterproof moisture-proof exhaust system for roofs and the floors, which uses a JWG-M type to seal and resist water for EPS and XPS heat-preservation boards, is communicated with the flue through the exhaust grooves of the EPS and XPS heat-preservation boards, and exhausts moist air in time by the pipeline effect of the flue so as to achieve waterproof heat-preservation exhaust integral roofs. Simultaneously, the system removes the vertical exhaust pipes arranged on the roofs and reduces the hidden danger of seepage, and the roofs are smooth to prevent frost heave and gas heave so that the deserved effective service life of the waterproof and heat-preservation roofs is achieved. Besides, the system has good heat-preservation and waterproof effects.

The invention discloses a device for carrying out static-dynamic force multifunction testing on a support. The device comprises a main machine mechanical part, a horizontal shearing part, a vertical loading part, a corner loading part, a conveying trolley, a straight line guiding track device, an environment box, a measurement and control part and a hydraulic part. A horizontal servo actuator of the horizontal shearing part is hung horizontally and is hinged to a sliding groove in the inner side of a self-balancing stand column of the main machine mechanical part, and horizontal loading is provided for the support to be tested. The upper end of a vertical servo actuator of the vertical loading part is fixed on an upper horizontal beam of the main machine mechanical part, the lower end of the vertical servo actuator is connected with a movable horizontal beam, and vertical loading is provided for the support to be tested. The corner loading part is parallel to the vertical loading part and is fixed on the outer side of the upper horizontal beam of the main machine mechanical part, and the corner loading part is used for completing corner testing. The conveying trolley is arranged on a conveying track of the main machine mechanical part, and the straight line guiding track device is arranged on the inner side of a bearing stand column of the main machine mechanical part. The measurement and control part and the hydraulic part are connected with the horizontal shearing part, the vertical loading part and the corner loading part respectively.

The invention relates to a new technique method for magnetic powder detection of a large cast valve, which comprises the following steps: 1), processing the surface of the valve body; 2), uniformly spraying contrast sensitivity on the surface of the valve body; 3), detecting whether the equipment is in the check validity period or not; 4), configuring a magnetic suspending liquid with the concentration within 10-25g/L; 5), fixing a Al-30/100 sensitivity test piece in a detected part through a standard test piece fixing device so as to assess the comprehensive performance of a detecting system; 6), wetting the surface of the workpiece by the magnetic suspending liquid, magnetizing the surface of the workpiece, and detecting the valve body according to a special magnetized path graph for the valve body inspection via an AC magnetic yoke continuous method; 7), utilizing an air pressure type sprinkling can with a lighting function and suitable for magnetic powder detection, directly performing observation once magnetic marks are formed, and achieving that magnetization, magnetic suspending liquid spraying and observation are performed at the same time; 8), recording detection parameters and defect magnetic marks, grading the workpiece quality according to the detection technique standard based on the displayed defect magnetic marks, and then determining whether the workpiece is qualified or not according to the acceptance quality level. Moreover, in case of reinspection, the sensitivity of the detecting system is readjusted, and the workpiece is detected again until the requirements are met. The method can be effectively used for detecting the magnetic powder of the large valve.

The invention discloses a PTFE resin composite material of a sealing ring with high thermal conductivity used for a rotating shaft. The PTFE resin composite material consists of the following components in percentage by mass: 5%-15% of carbon fiber, 5%-8% of nano-silicon carbide, 3%-10% of indium nitride, 2%-4% of alumina, 1%-2% of a coupling agent and the balance of PTFE. The invention also discloses a preparation method of the PTFE resin composite material. In the PTFE resin composite material and the preparation method disclosed by the invention, by adding the carbon fiber to the PTFE, the tensile, compressive and flexural moduli of the material can be increased, the thermal expansion coefficient can be decreased, and the potential hazard of leakage caused by expansion after the temperature rises can be reduced; meanwhile, the creep deformation can also be reduced, the hardness can be improved, and the thermal conductivity is increased simultaneously, so that friction heat can be quickly transferred out. The carbon fiber is subjected to modification treatment so as to be well dispersed in the PTFE. Through combination of nano-silicon carbide, alumina and indium nitride, the thermal conductivity of the material can be effectively improved, and the sealing ring with high thermal conductivity used for the rotating shaft made from the PTFE resin composite material disclosed by the invention has high thermal conductivity and can timely conduct out friction heat on the rotating shaft.

The invention relates to the technical field of oil-gas well drilling completion technology, in particular to a drilling liner cementing tool with a packer and a cementing method. Hydraulic setting ofthe packer is carried out after a well is cemented through the drilling liner cementing tool, safety and reliability are achieved, the requirement of later underground increasing production operationis met, the drilling liner cementing tool with the packer is fed in the drilling rig in-well process, pumping circulation can be carried out in the whole process, circulating pressure is not limitedby pump pressure, and the sleeve lowering success rate is improved. Compared with a general hydraulic drilling liner hanger, an annular clearance of the drilling liner cementing tool and an upper sleeve is large in the cementing process, the circulation is reduced, the risk of leakage is reduced, the problems of dropout, borehole collapse and the like due to a ball seat of a general hanger generates surge pressure are solved, and the lowering success rate and the cementing quality of the whole drilling liner cementing tool are improved through the cementing method.

The invention relates to an improvement of an aluminum electrolytic cathode set structure, in particular to an improvement of a double-dovetail-groove or multi-dovetail-groove cathode set structure for large grooves, and discloses a cathode for a dovetail groove type aluminum electrolytic cell. The cathode structurally comprises a cathode carbon block and a cathode steel rod which are bonded through combined materials. The cathode is characterized in that the number of the cathode steel rod bonded through the combined materials in the cathode carbon block is one; the distance between the cathode steel rod and the side of the cathode carbon block is 50 mm-180 mm; and the distance between the cathode steel rod and the upper portion of the cathode carbon block is 150 mm-300 mm. Compared with the prior art, the cathode has the beneficial effect of greatly lowering voltage drop of ferric carbon; the limitation for electric conduction increasing through steel rod widening is broken through; quite remarkable functions for lowering furnace bottom voltage drop, lowering the horizontal current and reducing the furnace leakage risk are achieved; and meanwhile, the structure is simple, the manufacturing and running cost is low, and the production cost of electrolytic aluminum can be effectively reduced.

The invention provides an overlapped type prefabricated two-cabin assembled pipe gallery structure and a construction method thereof. The structure comprises a bottom plate, an inner wall plate, an outer side wall plate and a top plate; the bottom plate comprises a first bottom plate connected with the inner wall plate and a second bottom plate with two sides connected with the outer side wall plate; the second bottom plate is connected with the outer side wall plate through multiple top supports arranged in the direction of the end face of the outer side wall plate, and is casted, a comprehensive cabin and a gas cabin which are in left and right distribution are obtained in a divided manner, and collecting joints are constructed in a segmented manner. According to the assembled pipe gallery structure, joints are split, the bottom plate is divided into two parts, one part is subject to early-period casting, the remaining part and the outer side wall plate are casted jointly, the jointconnecting strength and integrality are improved; due to joint splitting, a cast-in-place reserved horizontal construction line of the outer side wall plate can be removed, and the pipe gallery leakage risk is greatly reduced.

The invention discloses a thermal expansion valve and an assembling method thereof. The thermal expansion valve comprises a valve body, a gas box head, a valve core component and an adjusting component, wherein the adjusting component comprises an adjusting rod, a spring seat, a valve core support base and an adjusting spring; the valve body comprises a mounting cavity and an adjusting cavity which are respectively arranged at the upside and the downside and are communicated with each other; the mounting cavity is used for mounting the adjusting component in the adjusting cavity through an upper opening of the valve body; the adjusting rod comprises a matching part and an adjusting part respectively located at the upper part and the lower part, and a positioning circular bead located between the matching part and the adjusting part; the matching part is matched with the spring seat; the adjusting part is used for a user to operate; the adjusting rod is located in the adjusting cavity through the positioning circular bead; a third sealing pair is formed between the adjusting part of the adjusting rod and the adjusting cavity; the spring seat is matched with the inner wall of the adjusting cavity through a screw thread, so that the spring seat can move up and down under the driving of the adjusting rod. As the adjusting component is arranged in the adjusting cavity from the upper opening of the valve body, the installation problem of the adjusting component is solved without setting an adjusting seat in the prior art; and furthermore, the leakage risk is reduced, and the whole performances of the products are improved.

The invention discloses a waterproof structure for exterior windows in masonry engineering and a construction method thereof, which belongs to the technical field of renovation and repair of existing buildings, and solves the problem that the exterior windows of existing historic buildings have been severely damaged by wind and rain for many years, and the waterproof and anti-seepage performance of the exterior windows has deteriorated. The problem of not being able to meet the functional requirements of the continued use of the building. The exterior window waterproof structure in the masonry project adds sub-frames and prefabricated reinforced concrete window sill waterproof joint structures on the outside of the window frame, so that the exterior windows in the masonry project can achieve waterproof and thermal insulation effects, and reduce the risk of external window leakage. At the same time, the gap between the window frame and the structure is tightly filled with a foaming agent, and sealed with a silicone structural sealant to avoid the possibility of water seepage in the weak links of the outer window nodes. In addition, the drip line is set at the bottom of the window sill, and the bottom of the window is sloped outwards to prevent water from stagnating. The invention achieves good waterproof and anti-seepage effects by combining the way of sub-frame joints and the waterproof joints of prefabricated reinforced concrete window sills into one.

The invention discloses a self-locating high-sealing large-flow three-way valve. The three-way valve comprises a shell, wherein the shell comprises a water inlet channel, a first water outlet channel,a second water outlet channel and a valve cavity, the first water outlet channel and the second water outlet channel communicates with the water inlet channel in a switching mode, a valve element ismounted in the valve cavity and comprises a motor base and a three-way framework, the shell, the motor base and the three-way framework are made of plastic materials, the lower end of the motor base extends downwards to form a motor base clamping head, a three-way framework clamping groove allowing the motor base clamping head to be mounted from the side face is formed in the upper end of the three-way framework, the motor base and the three-way framework are connected by inserting the motor base clamping head into the three-way framework clamping groove in a matched mode, and the motor base is connected with the shell through clamping screws. According to the three-way valve, self-locating during mounting can be conveniently realized through the motor base and the three-way framework.

The invention discloses an in-situ electrochemical-Raman spectrum measurement system in a high-temperature and high-pressure water fluid environment, which comprises a high-temperature and high-pressure reaction container, an electrochemical measurement device and a Raman spectrum measurement device, wherein a reaction cavity is arranged in the high-temperature and high-pressure reaction container; the electrochemical measurement device comprises an electrode base, a working electrode assembly, an auxiliary electrode assembly and a reference electrode assembly, the Raman spectrum measurement device comprises an optical window and a working electrode, and in a working state, in-situ electrochemical measurement is carried out through the working electrode assembly, the auxiliary electrode assembly and the reference electrode assembly; and a laser signal is focused on the surface of the working electrode in the reaction cavity through the optical window, and a Raman scattering signal penetrates through the optical window sheet, is received by the Raman probe and is transmitted back to the Raman spectrometer for analysis and processing, so that in-situ electrochemical Raman spectrum measurement in a high-temperature and high-pressure water fluid environment can be carried out, and the research requirements are better met.

The invention discloses an information display method of a locking state, which is used for information display of an application program installed on a terminal. The method comprises: when the application program is in a locking state, obtaining information to be displayed, the locking state being an application program interface locking state entered after the application program meets a presetlocking condition; obtaining a current state of the terminal when the application program is in the locked state; and when the terminal is in the first screen locking state, displaying the informationon a first screen locking interface of the terminal, otherwise, displaying the information on the application program locking interface. According to the method, different display modes are selectedaccording to information type classification, display of various non-emergency events in a screen locking state of the terminal is reduced, excessive system data and information are prevented from being leaked when an operator leaves the state, and the hidden danger of production data leakage can be reduced as much as possible under the condition that important information can be reminded in time.

The invention belongs to the field of nuclear fuel processing and particularly discloses a device and method for treating high-fluorine materials. The device comprises a vacuum valve, a nitrogen back-blowing valve, a feeding valve, a discharging valve, a temporary storage bin, a reaction bin, an emptying valve and a filter. The method comprises the step that opening and closing of all the valves are designed during the evacuation time T1, the sucking time T2, the emptying time T3, the evacuation time T4, the vacuum breaking time T5, the discharging time T6, the positive pressure maintaining time T7 and the waiting time T8, and therefore sucking and treating of the high-fluorine materials are achieved. By the adoption of the device and method, the high-fluorine materials can be treated safely at the low cost through full-automatic operation.

The invention relates to a pipeline connector sealing device, in particular to a dual sealing device for a high-pressure pipeline in an automobile engine. The dual sealing device comprises an upset head type through-connection device, a double thread connector, a locking nut, a flange plate A and a flange plate B. The upset head type through-connection device and the double thread connector are ina dual sealing connection relation after the locking nut is tightened, preliminary seal is formed through a concave hole and an upset head, secondary seal is formed between a spherical step and a protrusion, and the self-adaptation capability between matched faces is high so that the oil pipe leakage risk can be reduced. The flange plate A and the flange plate B have a locking strengthening function on the locking nut, the sealing effect between the upset head type through-connection device and the double thread connector is guaranteed, and after long-time usage, the fine adjustment functioncan be achieved; and the leakage risks after long-time usage are prevented, the flange plate A and the flange plate B can be matched with rubber gaskets, and the sealing strengthening effect is achieved at the two ends of the locking nut.

The invention relates to an integrated high-pressure gas pressure reduction module. A valve body is provided with a gas flow incoming channel, a pressure reduction channel and a gas flow outgoing channel. The gas flow incoming channel is communicated with the pressure reduction channel through a first middle channel and is communicated with the gas flow outgoing channel through a bypass channel. The pressure reduction channel is communicated with the gas flow outgoing channel through a rear stop valve channel. An incoming gas pressure gauge, an outgoing gas pressure gauge, a front stop valve and a rear stop valve are mounted on the valve body. A pressure reduction valve is mounted, between the front stop valve and the rear stop valve, on the valve body, and a main valve disc of the pressure reduction valve is corresponding to the end surface of a valve port of the valve body. A safety valve is mounted, behind the pressure reduction valve, on the valve body, and a safety valve pressure release joint mounted on the valve body is communicated with a safety pressure release channel. A bypass throttle valve is mounted on the valve body, and a valve stem of the bypass throttle valve is corresponding to a bypass channel. The integrated high-pressure gas pressure reduction module is simple and reasonable in structure, high in integration, small in size and high in safety; and the pressure reduction valve can be maintained and repaired when a high-pressure gas system works normally.

The invention discloses an installation method for a no-stuff-crack window frame. The installation method comprises the following construction steps that firstly a building outer wall is deepened and designed to be a full-concrete outer wall, then a connecting piece effectively connected with concrete is fixed on a fixing piece through a self-tapping screw, and after the installation position of the fixing piece is well determined on a formwork, the fixing piece is fixed to the formwork through a self-tapping screw; and after molding and mold-releasing are conducted, the window frame and the fixing piece are directly connected through screws, and finally gluing treatment is conducted in a crack between the window frame and the fixing piece. According to the installation method for the no-stuff-crack window frame, a traditional window-frame installation procedure is changed, meanwhile the problem of leakage caused by the difficult crack stuffing due to the fact that the gas between a traditional window frame and the wall body is too large is solved, the construction period is shortened, and the construction difficulty of a worker is lowered.

The invention relates to a reducing two-way throttling short tube, which is characterized in that the reducing two-way throttling short tube comprises more than two sections of short tubes with different tube diameters. The short tubes are sequentially arranged according to the magnitude of inner tube diameter and are mutually and serially connected to form the reducing two-way throttling short tube. The length of each short tube is 2mm to 30mm. The inner tube diameter D1 of a first tube (5) at a head end is the smallest and is 0.4mm to 1.1mm, the inner tube diameter D2 of a second tube (7) close to the first tube (5) is 1.1-2 times of D1, the inner tube diameter D3 of a third tube close to the second tube (7) is 1.1-2 times of D2, the inner tube diameter of an nth tube is 1.1-2 times of the inner tube diameter of an (n-1)th tube by parity of reasoning and the inner tube diameter of the nth tube at a tail end is the largest, wherein the n is a natural number. The reducing two-way throttling short tube has the advantages that since one-way valves are not used, the production cost is reduced; since craters are reduced, the potential leakage is reduced; and the vibrating noises produced by the one-way valves are fully avoided.

The invention provides a foundation pit graded depressurization method. After depressurization is performed through a first-stage pit exterior depressurization well between a ground wall and an adjacent waterproof curtain of the ground wall, a first-stage confined water head and a second-stage confined water head, which is in a to-be-excavated area, are obtained in an area surrounded by the groundwall and the adjacent waterproof curtain; and therefore, the height difference between the second-stage confined water head in the to-be-excavated area and the first-stage confined water head is reduced, so that the pressure of the ground wall is reduced. According to the foundation pit graded depressurization method, the difference between confined water heads inside and outside the pit can be reduced, and an enclosure structure of an ultra-deep foundation pit is protected; the leakage risk of the ultra-deep foundation pit is reduced; And the safety coefficient of construction operation in the foundation pit is increased. According to the foundation pit graded depressurization method, the depressurization range can be effectively controlled, controllable settlement in each depressurization area is guaranteed, the difference between the water heads inside and outside the foundation pit ground wall is reduced, and the construction safety of the deep foundation pit is effectively guaranteed.

The invention discloses a network equipment security management method, which belongs to the technical field of network communication, and comprises the following steps of: decomposing a management mode by creating a plurality of management protocol ports in a network equipment group, and logically isolating a plurality of users based on role groups of a user domain, creating the plurality of management protocol ports, including: adding a system management protocol port, a security management protocol port, and a log management protocol port in a management domain. According to the network equipment safety management method, the arbitration monitor is used for monitoring resource sharing among the virtual machines and communication among the virtual machines according to a user isolation rule accessing the network equipment group, so that logic isolation based on a user domain is realized, and a manager is limited to check private data of the user domain; whether malicious software exists in the virtual machine or not is monitored through multi-view comparison, and when the malicious software needs to be repaired, a manager sends an operation instruction to the virtual machine in the trusted environment virtual machine to prevent the action of attacking other users from occurring in the virtual machine.

The invention discloses a drainage prevention combined self-adhesion waterproof plate for a mining method underground tunnel. The drainage prevention combined self-adhesion waterproof plate comprisesa hook-and-loop fastener band, a drainage layer formed by multiple convex points, an HDPE waterproof plate layer, a macromolecule hot-melt pressure-sensitive adhesive layer and an anti-adhesion coating. The invention further provides a construction method of the drainage prevention combined self-adhesion waterproof plate. The waterproof plate can guide drainage, and unsmooth drainage of surrounding rock water or scouring to anchoring and shotcreting concrete is avoided. In addition, the waterproof plate can sufficiently adhere to secondary lining concrete, water channeling is avoided, the secondary lining concrete is sufficiently protected while the hidden danger of leakage is greatly reduced, the service life of the tunnel is prolonged, and the driving safety is greatly improved; and dueto the fact that the drainage effect is good, circumferential and longitudinal drainage blind pipes in a conventional method can be omitted, the construction period can be shortened, and the manufacturing cost can be reduced.

The invention relates to an ultrahigh pressure supercharger which comprises a low-pressure flange, a low-pressure cylinder barrel, a piston, a middle flange, an ultrahigh pressure cylinder barrel, a transitional plate, an oil way board and a connecting tube. The low-pressure flange is arranged at the bottom of the low pressure cylinder barrel, and the two ends of the middle flange are closely connected with the low-pressure cylinder barrel and the ultrahigh pressure cylinder barrel. The piston comprises a head part and a piston rod connected with the head part, the head part is closely attached to the inner wall of the low-pressure cylinder barrel, and the piston rod penetrates through the middle flange and extends into the ultrahigh pressure cylinder barrel. The oil way board and the transitional plate are sequentially mounted on the side portion of the middle flange through bolts. The ultrahigh pressure supercharger is reasonable in structural design and capable of sealing the pressure from 0 MPa to 80 MPa, guarantees the reliability of sealing, reduces external pipelines, lowers oil leakage potential hazards, and meanwhile increases the attractiveness.

The invention relates to an integrated detection structure of a vortex flowmeter. A temperature detector is fixed to the bottom of a flow detector, the flow detector and a temperature connection line connected with the temperature detector are encapsulated in a probe cavity through filler, a probe fixing element is fixed to the wall of a shell of the vortex flowmeter, the lower end of the probe sequentially penetrates through a hole of the probe fixing element, the probe hole is formed in a pipeline of the shell of the vortex flowmeter, a round flange plate at the upper probe is fixedly connected with the probe fixing element, a sound making body is fixed in the shell of the vortex flowmeter, an air outlet of the sound making body is communicated with a channel hole of the shell of the vortex flowmeter, and an S-shaped tube is fixed to the channel hole of the shell of the vortex flowmeter. The integrated detection structure has the advantages that simultaneous measuring of temperature, pressure and flow points is achieved; meanwhile, the sound making body and the probe are effectively protected in a sealed mode by filling epoxy resin or inorganic glue, the functions of isolation, moisture resistance and connection line interference prevention are achieved, and normal stable operation of a sensor is further guaranteed.

The invention discloses a data storage and reading method and an electronic device, and the method comprises the steps: generating a secret key after obtaining first target data to be stored in a blockchain; storing a first secret key part of the secret key into a state database, wherein the state database has a set access permission; and encrypting sensitive data in the first target data by usingthe key, and storing the encrypted first target data in the blockchain; after obtaining the query instruction, reading the encrypted second target data from the blockchain based on the identificationnumber of the to-be-queried second target data carried by the query instruction; if the source node of the query instruction has the access permission of the state database, obtaining a first key part associated with the second target data from the state database; and decrypting the sensitive data in the encrypted second target data by using the key determined by the first key part to obtain decrypted second target data. According to the scheme, the security of the sensitive data in the blockchain can be improved.

The invention relates to the technical field of roof cracking prevention, in particular to an anti-cracking construction technology for the surface layer of a waterproof and thermal insulating roof ofa building slope top structure. The anti-cracking construction technology comprises steps of surveying and setting out; slope finding; insulation board laying and board joint grouting; mortar levelling; waterproof layer construction; setting out for dividing joints; embedding of the dividing joints; reinforcing mesh laying; concrete pouring; surface finishing; maintenance. Tensile stress caused by shrinkage and expansion of concrete due to temperature change, non-even sinking and the like can be resisted effectively, a good effect is realized in controlling concrete cracks, surface layer cracks of the roof are reduced greatly, hidden danger of leakage is reduced, maintenance cost is reduced, one-time construction qualification rate of the surface layer of the roof is increased, construction period is shortened, and the technology has remarkable economic benefit.

The invention discloses a parapet wall cornice lightning protection belt support construction method. The method comprises the steps of: construction preparation; support position positioning; stone surface cleaning; bonding test; support installation; inspection and acceptance; and on-site cleaning. According to the parapet wall cornice lightning protection belt support construction method of theinvention, when a support is adhered to stone, a curtain wall unit does not need to drill holes in the surface of the stone according to the position of the support on the site, and therefore, a lotof manpower and material resources are saved; a building structural adhesive is smeared, so that the support can be bonded to the stone, so that holes are not needed to be formed in the stone, and therefore, the damage and cracking of the stone due to improper trepanning are avoided, the problem of water leakage is avoided, civil construction quality is greatly improved, the hidden danger of leakage is reduced, a safety coefficient is high, and construction efficiency is high; the bonding construction of the support on the stone, so that elevation control over the support can be well guaranteed; the adjustment of the height of the support due to hole drilling depth is avoided. With the method adopted, direct loading can be achieved, and convenience is brought to the customization of manufacturers.

The invention provides an outer window frame waterproof joint structure and a construction method thereof. The outer window frame waterproof joint structure comprises a wall, a window frame and an outdoor windowsill, a gap between the window frame and the wall is filled with a filling layer, and the filling layer is composed of a U-shaped filling part using fine stone concrete and an inverted U-shaped filling part using a polyurethane foaming agent; an outdoor closing structure comprises waterproof mortar layers, sealing grooves and sealant; the waterproof mortar layers are coated on the outdoor side of the filling layer, the window frame adjacent to the filling layer, the outdoor side of the wall and the outdoor side of the windowsill; the sealing grooves are circumferentially formed in the waterproof mortar layers along the outdoor side of window frame, and sealed and closed with the sealant. According to the outer window frame waterproof joint structure and the construction method thereof, the fine stone concrete is adopted to replace the polyurethane foaming agent for waterproof filling materials of a lower opening of the window frame, arrangement of the other waterproof rolling material can be avoided, process operation is relatively easy, construction quality control is guaranteed, and the risk of rainwater leakage of an outer window can be reduced.

The invention discloses a processing method of a steel rod for an engine fuel oil system, wherein the processing method includes the following steps: (1) preparing materials; (2) smelting and continuously casting: smelting the raw materials prepared in the step (1) through a converter or an electric furnace to obtain molten steel, then carrying out VOD refining of the molten steel in a VOD furnace, taking an iron-silicon intermediate alloy or pure aluminum as a reducing agent for deoxidization in the VOD refining process, after deoxidization, taking a calcium oxide powder and a fluorite powderas desulphurizing agents, desulphurizing, and continuously casting into a stainless steel wire rod with the diameter of 16-38 after VOD refining; (3) carrying out filming treatment; (4) drawing to the finished product specification; and (5) cleaning. The leakage problem in subsequent applications can be controlled from the source, the risk of leakage is greatly reduced, and the reliability of work of an engine is ensured. The mechanical properties comprise that the yield strength is more than or equal to 205 N/mm<2>, the tensile strength is more than or equal to 520 N/mm<2>, the elongation rate is more than or equal to 40% and the shrinkage rate of a cross section is more than or equal to 60%; the mechanical properties completely meet the processing requirements of engine fuel oil systemparts.

A three-eccentric metal sealing butterfly valve structure capable of replacing a sealing pair on line comprises a valve body, a limiting pin a, a three-open ring, a locking nut, a screw a, a valve seat sealing ring, a multilayer sealing ring, a limiting pin b, a butterfly plate, a pressing plate and a screw b. The valve seat sealing ring is arranged in the valve body. The valve seat sealing ring is fixed in the valve body through the three-opening ring, the locking nut and the screw a. The limiting pin a is arranged between the valve seat sealing ring and the valve body. The valve seat sealingring is limited through the limiting pin a. The multilayer sealing ring is arranged on the butterfly plate. The multilayer sealing ring is pressed by the pressing plate and fixed to the butterfly plate through the screw b, and the butterfly plate, the multi-layer sealing ring and the pressing plate are fixed in position through the limiting pin b; and an overhauling bin opening is formed in the valve body. The three-eccentric metal sealing butterfly valve structure has the beneficial effects that the defect that an original three-eccentric structure cannot replace the sealing pair on line issolved; and during online replacement, by arranging the limiting pins, the sealing pair position is determined, the leakage risk of a butterfly valve is reduced, and the safe and effective operation of an LNG receiving station is ensured.

The invention discloses a sealing ring PTFE resin composite material for an anti-corrosion spindle. The sealing ring PTFE resin composite material contains the following components by weight percent: 5-15% of carbon fiber, 6-12% of modified imvite, 2-5% of molybdenum oxide, 0.1-0.5% of nonyl phenol, 1-2% of coupling reagent and the balance of PTFE, wherein the modified imvite is the Na-montmorillonite modified with 1,3-bi-cetyl benzimidazole salt. The invention also discloses a preparation method thereof. According to the invention, the carbon fiber is added into the PTFE, so that the stretching, compressing and bending modulus of the material can be increased and the corrosion resistance of the material is promoted; the modified imvite and molybdenum oxide can effectively promote the mechanical property and corrosion resistance of the material; the nonyl phenol is capable of effectively promoting the corrosion resistance of the material; the sealing ring for the anti-corrosion spindle prepared from the material according to the invention has excellent corrosion resistance, the mechanical performance is not reduced under the condition of long-term contact with refrigerant oil and the service life is long.