Patents
Literature

198results about How to "Good waterproof performance" patented technology

Double-isolating type charge interface structure of new energy car

The invention discloses a double-isolating type charge interface structure of a new energy car. The charge interface structure is outstanding in waterproof performance, can effectively prevent the problem that water enters a charge socket during long-term use to influence the normal use of the charge interface of the electric car and reduce the safety of the charging process of the car. The double-isolating type charge interface structure of the new energy car comprises a charge socket arranged on a car body, a charge interface box body which is arranged on an outer plate at the side of the car body and provided with an opening in the upper end, and a charge interface cover; the charge socket comprises a charge socket body, and a socket end cover which is hinged to the charge socket body and used for shielding an upper end port in the charge socket body; an avoiding gap is formed in the bottom surface of the charge opening box body; the upper end of the charge socket body passes through the avoiding gap to be positioned in the charge interface box body; the socket end cover is positioned in the charge interface box body; a first sealing ring is arranged at the side edge of an opening in the upper end of the charge interface box body; an inflating sealing structure is arranged between the charge socket body and the socket end cover.
Owner:XIAN ACTIONPOWER ELECTRIC

Combined steel pile cofferdam provided with water swellable waterproof rubber fore shaft

The invention discloses a combined steel pile cofferdam provided with a water swellable waterproof rubber fore shaft, which comprises cofferdam pegs and cofferdam long piles used for connecting two adjacent cofferdam pegs. Each cofferdam peg comprises a U-shaped steel sheet pile and a fore shaft sub-part, and the left and right ends of each U-shaped steel sheet pile are respectively and fixedly connected with one fore shaft sub-part. Each cofferdam long pile comprises a steel pipe pile, a fore shaft parent part arranged at the outer side of the steel pipe pile, and a water swellable rubber liner arranged in the fore shaft parent part; a tubular inner cylinder matched with each fore shaft sub-part and a notch connecting the interior of each tubular inner cylinder with the exterior of each tubular inner cylinder are arranged on the fore shaft parent part; each water swellable rubber liner is fixedly arranged on the inner wall of the corresponding tubular inner cylinder; each fore shaft sub-part is sleeved into the corresponding tubular inner cylinder; and bentonite compound filler is filled in a gap between each fore shaft sub-part and each water swellable rubber liner. By taking the combination of a rigid steel pile and a flexible steel pile to have complementary advantages, the combined steel pile cofferdam has good water resistance; the fore shaft is reliable in connection; the material of the combined steel pile cofferdam is easy to obtain; and the combined steel pile cofferdam is strong in integral structural rigidity and low in cost and is quick to construct.
Owner:SOUTHEAST UNIV

Novel expanded perlite insulation board and preparation method thereof

InactiveCN102924001AGood fire safetyGood waterproof performanceThermal insulationPerlite
Provides are a novel expanded perlite insulation board and a preparation method thereof. The novel expanded perlite insulation board is mainly prepared by raw materials of 50%-80% of expanded perlite, 10%-40% of inorganic adhesive and organic adhesive, 0%-10% of fiber and 0%-10% of property-modifying additive. The novel expanded perlite insulation board uses a compression molding process and is high in production efficiency, good in size stability and low in production cost. The novel expanded perlite insulation board has excellent fireproofing safety to overcome shortcomings of poor fireproof performance, ageing resistant and environment pollution; and has excellent waterproofness and low thermal coefficients to overcome a shortcoming that a common inorganic insulation material is large in thermal coefficient and strong in water absorbability. The novel expanded perlite insulation board has excellent heat insulation performance, can achieve thermal insulation performance levels of the organic material, simultaneously has non-ignitable performance of the inorganic material, is good in durability and weather fastness, can achieve same service life of buildings, solves the problem that service life of an organic board is short, and is favorable for energy saving and environmental protection. The service life of the organic board can be asynchronous with the building.
Owner:SHENYANG JIANZHU UNIVERSITY

Driving roller

The invention discloses a driving roller. The driving roller comprises an outer cylinder and an inner cylinder arranged inside the outer cylinder, a motor is fixedly arranged inside the inner cylinder, the output shaft of the motor sleeves with a first rotating piece, and the outer peripheral surface of the first rotating piece is fixedly connected with the inner wall of the outer cylinder in a sealing mode; and the other end of the inner cylinder is provided with a second connecting piece, and the inner cylinder and the outer cylinder are rotationally connected together through the second connecting piece, wherein the second connecting piece is hermetically connected with the inner cylinder and the outer cylinder correspondingly. The driving roller has the beneficial effects that the motor is fixedly arranged inside the inner cylinder in a sealing mode, so that the waterproof performance is good; the inner cylinder and the outer cylinder are enabled to be connected rotationally through the first connecting piece and the second connecting piece, the outer cylinder is sleeved with the shell with spiral blades, when the roller of the robot is in contact with the inner wall or the sludge of the pipeline, friction is carried out by rotating of a spiral roller to the inner wall of the pipeline or the sludge to drive the pipeline robot to move forward, so that the contact area is large, and slipping is avoided; and when the roller of the robot is suspended in water, the spiral roller is equivalent to a propeller, the spiral roller rotates to be drained away water backwards and drives the pipeline robot to move forwards.
Owner:南京管科智能科技有限公司

Construction method of composite unilateral formwork deep foundation pit basement exterior wall

The invention relates to a construction method of a composite unilateral formwork deep foundation pit basement exterior wall. The construction method comprises the steps of: firstly, a composite waterproof layer of the deep foundation pit basement exterior wall is adopted for waterproof treatment of the basement exterior wall; secondly, a basement bottom plate and an outer wall guide wall are poured; thirdly, aiming at different working conditions with limited fertilizer tank space, three different unilateral formwork systems are adopted for carrying out unilateral formwork on the basement exterior wall, and each unilateral formwork system comprises an exterior wall frame opposite-supporting unilateral formwork system, an exterior wall steel pipe fastener inclined-supporting unilateral formwork system and an exterior wall profile steel support inclined-supporting unilateral formwork system; and fourthly, a basement exterior wall is poured. The method the following beneficial effects: aprotection wall adopts segmented prefabricated hoisting rear tenon type waterproof inserting connection to replace a traditional masonry or cast-in-place concrete structure; the construction efficiency is high, and the waterproof performance is good; and meanwhile, adjustable pull-connection pieces connected with the prefabricated protection wall sections are pre-buried in the foundation pit enclosure structure, so that the perpendicularity of the prefabricated protection wall sections is guaranteed, and the construction quality is high.
Owner:SHENZHEN JIANAN GRP

Double-frequency transmitting monopole antenna for portable high-frequency ground wave radar

The invention discloses a double-frequency transmitting monopole antenna for portable high-frequency ground wave radar. The double-frequency transmitting monopole antenna consists of an antenna upper section, a wave trap, an antenna lower section, a feed base and a ground network, wherein a conductor on the antenna upper section is h1 high and a conductor on the antenna lower section is h2 high. When the wavelength lambda 2 corresponding to the radar signal frequency f2 meets a formula of h2=k lambda2/4, the wave trap makes resonance oscillation so as to equivalently isolate the antenna upper section and ensure that the antenna upper section becomes a typical quarter-wave vertical monopole on the ground and has a major lobe of a radiation directional diagram along the ground surface. When the radar signal frequency is far lower than f2, the wave trap is in dissonance, so that the whole height of the antenna is equivalently increased to h3, and therefore the whole antenna forms a quarter-wave monopole with resonance being in lower frequency f1, meets a formula of (h1+h2+h3)=k Lambda 1/4 and has a major lobe of a radiation directional diagram along the ground surface as well. The double-frequency transmitting monopole antenna disclosed by the invention can work on two frequency bands respectively taking f1 and f2 as central frequencies conveniently, and both the two frequency bands have major lobes of directional diagrams along the ground surface. Besides, the adopted feed base realizes favorable waterproof structure design.
Owner:WUHAN UNIV

Fiber bragg grating osmometer

The invention discloses a fiber bragg grating osmometer which comprises a shell, a pressure bar, grating and a transmission optical fiber, wherein the shell is provided with a pressure inlet hole and an optical fiber lead hole, and the pressure inlet hole is provided with a filter screen; the shell is provided with a membrane which can directly sense the pressure at the pressure inlet hole; the two ends of the pressure bar are connected with the membrane, the grating is buried inside the pressure bar, and the transmission optical fiber is led out through the optical fiber lead hole. When in use, pore water enters into the osmometer through the pressure inlet hole and acts on the membrane to lead the membrane have deflection deformation; meanwhile, the pore water is transformed into concentrated force and acts on the pressure bar, and external force is applied on the pressure bar to lead the pressure bar to stretch; when the grating is under the pressure, the central wavelength is changed. At this time, a fiber bragg grating demodulation device is used for detecting the central wavelength of the grating, and software can be used for acquiring and storing data, so that osmotic pressure detection can be realized. The fiber bragg grating osmometer has the advantages of high measuring accuracy, small volume, electromagnetic interference resistance, good waterproof performance, capability of long-term monitoring, etc.
Owner:SHANDONG UNIV

Method for preventing pinna pectinata larvae from floating upwards and adhering

The invention relates to aquaculture bivalve offspring seed production, in particular to a method for preventing pinna pectinata larvae from floating upwards and adhering. Two wave-making pumps are arranged in a diagonal shape on the pond wall of a culture pond in a width direction; waves and water flows which are generated by the wave-making pumps are used for dispersing the pinna pectinata larvae so that the pinna pectinata larvae are uniformly distributed in the culture pond, thus the pinna pectinata larvae are prevented from floating upwards and adhering; 24 hours after pinna pectinata fertilized ovums are incubated into D-shaped larvae, when the D-shaped larvae float upwards and are adhered, the wave-making pumps are installed; the proper power of the wave-making pumps is 12-30 W, the proper flow rate is 5-10 m3/h, the proper distance horizontally kept between the water outlet centers of the wave-making pumps and a water surface is 15-25 cm, and the proper distance between the water outlet centers of the wave-making pumps and the adjacent pond wall of the culture pond is 20-40 cm. The invention can reduce upward floating and adhesion ratio matched groups of the pinna pectinata larvae more than 80 percent, enhance the survival rate by 80 percent without obvious adverse effect on the growth of the larvae and achieve the culture density of the larvae by 4-5/ml, thereby effectively enhancing the survival rate and the culture efficiency of the pinna pectinata larvae.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Novel LED (light emitting diode) projection lamp

The invention discloses a novel LED (light emitting diode) projection lamp which comprises a rear lamp housing, wherein an opening is formed in the front end of the rear lamp housing; the front end of the rear lamp housing is provided with a front lamp cover in a butting manner, and a lamp cavity is formed in the front lamp cover; a luminous assembly and a reflection cover for reflecting light are arranged in the lamp cavity; the novel LED projection lamp is characterized in that a rainwater temperature control probe for detecting whether raining occurs outside is arranged on the outer wall of the rear lamp housing; an air cooling device is arranged in the lamp cavity outside the reflection cover and comprises an air inlet pipe and an air exhaust pipe which are oppositely arranged on two inner sides of the rear lamp housing and are communicated with the outside; an air suction fan which is connected with the air inlet pipe and is used for blowing external air into the lamp cavity and an air exhaust fan which is connected with the air exhaust pipe and is used for exhausting hot air in the lamp cavity are respectively arranged at the bottom of the rear lamp housing; electromagnetic valves for controlling the air inlet pipe and the air exhaust pipe to be switched on and switched off are arranged in the air inlet pipe and the air exhaust pipe. Due to the arrangement, the novel LED projection lamp is high in heat dissipation performance and waterproofing performance.
Owner:广东恒辰光电科技有限公司

Environment-friendly type common cotton thread detonating cord

ActiveCN104829402AGood waterproof performanceDoes not pollute the airFuse detonationPolypropyleneCotton thread
The invention discloses an environment-friendly type common cotton thread detonating cord, relating to the technical field of detonating cords. The environment-friendly type common cotton thread detonating cord comprises a core wire 1, a Taian powder core 2, a detonating cord body 3, a polypropylene flat filament layer 4, a cotton yarn layer 5, a water-proof environment-friendly coating layer 6, an external blasting fuse paper strip layer 7, an outer cotton yarn layer 8, and an outer coating layer 9; the detonating cord adopts the water-proof environment-friendly paint instead of pitch to serve as a moisture-proof coating layer, has good moisture-proof and water-proof properties, is non-toxic and odorless, does not need to be heated, cannot pollute air and environment, and cannot harm the body health of operators; the environment-friendly type common cotton thread detonating cord is innovatively improved based on the common cotton thread detonating cord production process, the environment-friendly type common cotton thread detonating cord is good for the civil explosive industry, the energy is saved, the air is purified, the environment is purified, the body health level of the operators in the civil explosive industry is improved, and the comprehensive economic benefit is remarkable; and the environment-friendly type common cotton thread detonating cord can be widely applied to all the detonating cord production enterprises.
Owner:HUBEI SHUAILI CHEM

Energy-consuming steel rod replaceable beam-column joint node and construction method thereof

The invention relates to an energy-consuming steel rod replaceable beam-column joint node and a construction method thereof, which comprises a frame column, a precast beam, a prestressing tendon, and a laminated floor.A prestressing tendon channel is formed in the prestressing beam; a through tendon channel is formedin the position corresponding to the prestressing tendon channel in the frame column; the prestressing tendon is arranged in the prestressing tendon channel and a through tendon channel; the bottom of the precast beam near the both ends is provided witha connecting component; the connecting component comprises a rectangular box which is enclosed by four vertical side plates and a top plate and a vertical connecting rod connected to the top of the rectangular box; a lower side of the vertical side plate near one side of the frame column is provided with a notch; a connecting channel is formed inthe position corresponding to the notch in the frame column; and an energy-consuming steel rod is worn in the connecting channel. The construction method solves the difficult technical problems, comprising complicated construction of the traditional beam-column joints, the inconvenient installation of the energy-consuming steel bars, the complicated installation of the energy-consuming steel bars in the upper part of the prefabricated beams, the poor integrity of the structural floor panels, the difficulty in waterproofing between the floors, the difficulty in replacing the connected components after the earthquake, and the structural repair after the earthquake.
Owner:CHINA STATE CONSTRUCTION ENGINEERING CORPORATION

Pipeline supporting device and mounting method thereof

The invention discloses a pipeline supporting device and a mounting method thereof. The pipeline supporting device comprises a support frame base, a support frame body, cement mortar blocks and waterproof sealants; the support frame base is installed on the top surface of a building; the two ends of the support frame body are respectively connected with the support frame base and pipelines; the cement mortar blocks surround the support frame body, and the bottom surfaces of the cement mortar blocks are in contact with the top surface of the building; and the waterproof sealants are connected with the cement mortar blocks, the top surface of the building and the support frame body. The pipeline supporting device also comprises chemical bolts, a waterproof coating and heat insulation bodies; through the chemical bolts, the support frame base is fixedly arranged on the top surface of the building; the waterproof coating is respectively connected with the top surface of the building and the support frame base; the heat insulation bodies are installed at the upper end of the support frame body; and the pipelines are borne on the heat insulation bodies. The pipeline supporting device and the mounting method thereof have the beneficial effects that the waterproof ability of the top surface of the building is enhanced, the transition and the smoothness of heat in the pipelines are ensured, the generation of cold bridge effect is reduced and avoided, the service lives of the pipelines are prolonged, and the potential safety hazards caused by the use of the whole building are reduced.
Owner:CHENGDU SIXTH CONSTR ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products