46results about How to "Strong extension" patented technology

The invention relates to a system for underground communication and staff monitoring based on a TD-LTE technology. The system comprises mobile terminals, a relay station, a communication base station, a location server, a switchboard, a core network device, host computers, and transmission lines. The mobile terminals and underground base station nodes and the location server are connected with each other through wireless interfaces, and trinity communication monitoring environment is formed. The switchboard gathers a plurality of underground base station nodes through optical fibers, and connects the gathered underground base station nodes with a ground base station. The ground base station accesses a public switched telephone network through the core network device. Main transmission channels of the system uses wired optical fibers. Wireless channel uses an orthogonal frequency-division multiple access technology and a multiple-input multiple-output modulation technology. An original underground monitoring positioning algorithm is improved by using a mixed measurement mode of signal transmits-receive time measurement and angular measurement. Information of underground staff positions is obtained by using a circle coordinate setting method. The improved system and algorithm effectively solves problems of difficulties of high quality communication and monitoring positioning under complex and harsh conditions in mines.

The invention discloses a method for power distribution network state estimation on the basis of an SG-CIM model. The method comprises the steps of analyzing packets related with a power distribution network topological structure in the SG-CIM model, main categories and relations between the categories; splicing a major network, a power distribution network and a user topological model to obtain a complete power distribution network topological model; obtaining real-time data information of the power distribution network, performing pre-processing on real-time data according a state estimation algorithm to meet the state estimation requirements; enabling the expansion of a power distribution network state estimation model to meet various functional requirements of state estimation calculation, and performing state estimation. The problem of difficulty in power distribution network state estimation models and data sources is solved, and plenty of manpower and material resources are saved.

The invention relates to a pavement construction material and a pavement construction method, in particular to a cold-mixed asphalt mixture for a super-viscous fiber wear layer and a preventive maintenance method for an asphalt pavement. The composition and mass percentage of the ultra-viscosity fiber wearing layer cold mix asphalt mixture of the present invention are: polymer modified emulsified asphalt (9-15)%, aggregate (75-80)%, filler (0.5-3)% , fiber (0.1~0.3)%, rubber powder (0~3)%, water (5~10)%, the total amount is 100%. The material of the invention has good wear resistance, adhesion and water resistance, strong anti-crack ability of the construction road surface, good stability and convenient construction.

The invention discloses an optimizing method for pelletizing production integrating a chain-and-grid conveyer, a rotary kiln and a circular cooler which are triune. Based on material and heat exchange inside single equipment and among the three devices, heat supply and distribution of the chain-and-grid conveyer, the rotary kiln and the circular cooler are optimized online by adopting a technology of combining a mathematic model and expert control. The mathematic model is a triune heat and mass transfer model. A coupling relationship among a chain-and-grid conveyer model, a rotary kiln model and a circular cooler model is considered in construction. The heat and mass transfer model is applied to a pelletizing production process, so that the production process is transparent. Parameter control in the production process is carried out by adopting an expert control rule library, thereby optimizing the production process.

The invention provides a microalloyed steel mechanical property prediction method based on a global additive model. The method comprises the steps that influence factors of a mechanical property prediction model are determined; precipitated components and content of carbonitride in the rolling process of microalloyed steel are calculated; the mechanical property prediction model of the microalloyed steel is expressed into an additive form of a plurality of submodels according to the generalized additive model theory; the mechanical property prediction model of the microalloyed steel is estimated; and the reliability of all the submodels is verified. Through the scheme, the obtained product property prediction model of the microalloyed steel has the advantages of high calculation precision, wide adaptive range, etc., can be used for new product design and steel grade component optimization and achieves the purposes of reducing the number of physical tests, shortening the product development cycle and lowering cost.

The present invention provides a public transportation IC card internet payment system and a payment method thereof. The current payment ideas are changed, riding identification and payment functions of a public transportation IC card are separated, neither riding nor network payment of a passenger are neglected, and the passenger does not need to go to specified places for prepayment of the public transportation IC card and only needs to guarantee that a deduction account assorted with the IC card has money, thereby omitting the trouble for a user to go to a public transportation IC card service point for prepayment, bringing great convenience for passengers, greatly reducing logistics service personnel of public transportation companies, such as on-site charging persons and money counting staff, and lowering public transportation operating costs.

The invention discloses diverse satellite-borne electronic equipment in a parallel system. Communication topology of the system is achieved through double buses, and bridging of the two buses and information interaction between the two buses are completed through a communication module; function modules of the first type are connected with the first bus through a master-slave parallel framework, a symmetric parallel framework or a cluster parallel framework and are communicated with the first bus in a flow control mode; the flow control mode includes that the data communication process is divided into a plurality of layers of the processing streamline process responding layer by layer according to data sources, data hosts and data processing; the second bus is maintained through an auxiliary controller, data from function modules of the second type are collected independently in advance, the data are stored in an off-chip extended memory, and the function modules of the second type are maintained periodically. A layering time multiplexing system storage structure is achieved through on-chip storage resources and the off-chip extended memory.

The invention discloses a water-blocking medium-voltage power cable employing aluminum-scandium alloy conductors. A wire core of the cable comprises three power wire cores, wherein each power wire core is formed by sequentially arranging a power wire core conductor shielding layer, a power wire core insulating layer and a power wire core metal shielding layer outside a power wire core conductor; a water-blocking tape lapping layer, an aluminum-plastic tape longitudinal wrapping layer, a galvanized steel strip armor layer and a polyvinyl chloride sheath are sequentially arranged outside the three power wire cores; and the space between the three power wire cores and the water-blocking tape lapping layer is filled with a water-blocking filling strip. The aluminum-scandium alloy conductors are adopted as the power wire core conductors, so that, on one hand, a plurality of disadvantages when pure aluminum is adopted as the wire and cable conductors are avoided, and the water-blocking medium-voltage power cable has the advantages of creep resistance, high flexibility, high ductility, low resilience, connection stability, good water-blocking property and the like; and on the other hand, the cost of the cable is also reduced by 50%.

The invention relates to a method for preparing no-solvent green styrene-series cation exchange resin and belongs to the field of preparation of cation exchange resin. A crosslinking agent is adoptedto improve the elasticity and the pressure resistance of a styrene resin framework; a secondary polymerization method is adopted to increase the strength of the frameworl; high-concentration sulfuricacid is adopted to quicken a reaction and to improve the efficiency; and a multi-gradient concentration step-by-step acid nesting method to reduce intense heat release of sulfuric acid during cleaning. Disadvantages of a process which adopts dichloroethane as a swelling agent for a synthetic reaction are avoided, resin with the same performance and indexes as ion exchange ion which is prepared bynot taking dichloroethane as the swelling agent, and owing to frequent use of a water phase, environmental pollution of the water phase can be reduced. Resin prepared by the method is a dichloroethane-residue-free green product, and can be more deeply applied to industries including drinking water, food, medicines and the like.

The embodiment of the invention discloses a metadata-based comprehensive energy integrated e-CIM model design method, which comprises the following steps: constructing an energy network e-CIM topologymodel; expanding the energy network e-CIM topology model based on metadata; designing an interface of the energy network e-CIM topology model; and designing classes and association classes of the energy network e-CIM topology model. The embodiment of the invention has the following advantages: the problem of the integrated model of the comprehensive energy ''source network charge storage'' is solved, the interoperability of the system is improved, the data interface standard is unified, a large amount of manpower and material resources are saved, the blank of the public information model in the multi-energy synergistic complementary application is well filled, and the method has great practical significance.

The invention discloses a medium-voltage rubber jacketed flexible cable for offshore wind power generation, and belongs to the field of electric wires and cables. The medium-voltage rubber jacketed flexible cable comprises a cable core, a water-blocking wrapping tape and an outer sheath; the water-blocking wrapping tape wraps the outer side of the cable core; the outer sheath wraps the outer sideof the water-blocking wrapping tape in an extrusion mode; the cable core is formed by twisting three power wire cores and a water-blocking filling strip; the center in each power wire core is filled with a conductor; the outer side of each conductor is wrapped with a conductor shielding layer; an insulating sleeve wraps the outer side wall of each conductor shielding layer in an extrusion mode; aninsulating shielding layer wraps the outer side of each insulating sleeve; and a metal shielding layer wraps the outer side of each insulating shielding layer. The scandium-aluminum alloy conductorsare adopted, so that the defect that pure copper is used as electric wire and cable conductors is effectively overcome, the cost of the cable is reduced, the structural strength, the elongation, the tear resistance and the like of the cable core are effectively improved, and the defect that a traditional cable is poor in bending performance is overcome; and the cable is effectively suitable for medium-voltage cables and is convenient to popularize for a long time.

The invention discloses a composite base material root resistant waterproof sheet material. The sheet material is a multi-layer coextrusion composite sheet, including two outer layers and at least a three layer structure between the two and formed by alternately stacking of a buffer layer and a matrix layer; the outer layer is non-woven fabric; the buffer layer is modified polymer mixed polyethylene; the modified polymer mixed polyethylene comprises 40%-60% of linear low density polyethylene, 25%-35% of metallocene and 15%-25% of ethylene acrylic acid; the base material is a at least seven layer structure formed by alternately stacking of a nylon layer and a heat sealing layer, wherein the nylon accounts for more than 30% of the total weight of the matrix layer. The invention also discloses a preparation method of the sheet material, and the method employs fusion coextrusion. The sheet material of the invention has strong root resistant performance and waterproof performance, and is light and transparent, and suitable for application.

The invention belongs to the field of technical processing and application of ocean resource natural products and in particular relates to a preparation for improving antibacterial performance of a sanitary napkin and an antibacterial method of the preparation. The preparation comprises a main material or a main material and auxiliary materials, wherein the main material is chitosan; the auxiliarymaterials are fish collagen or fish collagen and glycerinum; the molecular weight of the chitosan is 10-2000KDa; and the degree of deacetylation is 80-100%. The preparation provided by the inventionis low in price, small in amount, safe and convenient, free of toxic or side effect and small in product cost influence, the antibacterial performance of the sanitary napkin can be greatly improved, and original absorption performance and flexibility of the sanitary napkin are not changed.

The invention discloses a safe and rapid electric heating device, comprising a heat conduction pipe and an electric heating wire. The electric heating wire is spirally wound on the outer wall of the heat conduction pipe; the heat conduction pipe is an aluminum alloy pipe; a layer of a sulfuric acid anode oxide film is arranged on the surface of the outer wall of the aluminum alloy pipe; and the electric heating wire and the surface of the outer wall of the aluminum alloy pipe are in direct contact. The electric heating device provided by the invention has the advantages in that the electric heating wire can heat the aluminum alloy pipe through direct contact through the layer of the sulfuric acid anode oxide film arranged on the surface of the outer wall of the aluminum alloy pipe, so that the heating speed of the electric heating device can be effectively improved, and the use security of the electric heating device can be ensured.

The invention relates to a hydraulic connecting bush (10) for connecting hydraulic lines (52, 54, 73, 74, 92, 94) for hydraulic circuit-breaker drives (98), comprising a hollow cylindrical main body (12, 60, 77) having at least two annular grooves (14, 16, 62, 64, 78, 79), which extend circumferentially on the outer cylindrical surface of the main body and have sealing rings (18, 20, 66, 68, 80, 81) inserted therein, wherein the main body (12, 60, 77) is made of a material having a first modulus of elasticity. The hydraulic connecting bush (10) is designed to be inserted in an overlapping manner in hydraulic lines (52, 54, 73, 74, 92, 94) to be connected that are in contact with each other at end faces of the hydraulic lines, the hydraulic lines being made of a material having a second modulus of elasticity, wherein a gap is formed between the main body (12, 60, 77) and the hydraulic lines (52, 54, 73, 74, 92, 94), such that, if the modulus of elasticity of the first material is less than the modulus of elasticity of the second material and an internal pressure is applied, the main body (12, 60, 77) is expanded more greatly than the hydraulic lines (52, 54, 73, 74, 92, 94) and thus the gap provided for technical reasons is closed in the region of the sealing rings. The invention further relates to a hydraulic connection (50, 72, 96), comprising an aforementioned hydraulic connecting bush (10). And the invention further relates to a hydraulic connecting plug (100, 120) for closing an open hydraulic line (102).

The invention discloses a mobile monitoring type flexible cable with a low-smoke zero-halogen scandium-aluminum alloy conductor for a coal mine, relating to the technical field of cables. The mobile monitoring type flexible cable comprises an external protective jacket, power line cores and an internal protective jacket; the power line cores are formed by sequentially pressing and wrapping an insulating and shielding layer, an insulating layer and a conductor shielding layer; the internal protective jacket is woven with metal fibers added to a low-smoke zero-halogen rubber which uses ethylene-propylene diene copolymer as a base material; the three power line cores are stranded and are wrapped into a cable core by means of the internal protective jacket; a semiconductor wrapping layer, an insulating wrapping tape and the external protective jacket are arranged outside the cable core in sequence; and three monitoring line cores are equally distributed in the semiconductor wrapping layer along the circumferential direction of the cable. The cable is simple in design and good in flexibility; the conductor line core of the cable is not easy to break; the cable has the characteristics of being resistant in creep deformation, high in flexibility, strong in extension, low in rebounding, good in connection stability and good in conductivity; no toxic gas is released and the cost is reduced greatly.

The invention discloses a silvered steel tape shielded power cable, which comprises three groups of control wire cores, one group of grounding wire cores, a silvered steel tape armor layer, a silvered steel tape shielding layer, a silvered copper tape screened layer, a polyvinyl chloride insulating layer, a low-smoke halogen-free sheath layer and a polyvinyl chloride sheath layer, wherein each group of control wire cores comprise a silvered copper conductor, a butyronitrile insulating layer and a silvered copper wire shielding layer; and the group of grounding wire cores comprise another silvered copper conductor, another butyronitrile insulating layer and a galvanized copper wire shielding layer. The cable has the advantages of creep resistance, high flexibility, good water-proof capability and the like.

The weight proportion of the raw material in the alloy is: Al 98.17~98.75, Si 0.2~0.38, Mg 0.6~0.9, Fe 0.2~0.25. Cu 0.25~0.3, in which, Cu in it strengthens the hardness and extension power of the Al alloy tubes, Mg increases the plasticity and acid-resistant performance cracks do not appear on the turning arc of the tube by this invention.

The invention discloses functional ceramic preparation equipment. The functional ceramic preparation equipment is structurally provided with a box body, a sintering chamber, a top cover, a control panel and an operation box; upward thrust is generated on a connecting frame through air flow, the connecting frame is made to swing and fold, an arc block is driven to assist an elastic block to generate power, reverse elastic jacking is generated immediately under the elastic property of the arc block, the elastic block can continuously bounce and circularly eject the arc block under the elastic assistance of the elastic block and the telescopic elastic cooperation of a sleeve frame, and therefore, the sliding block can integrally do displacement movement to a greater extent to drive a movable body to move in a longer area, and a shovel plate can shovel and scrape the inner wall of a cigarette cavity better. A collision block sinks into the inner side of the shovel plate under the telescopic connection of a connecting rod through the magnetism of the arc block and the repulsive magnetic force of the movement assisting body, collision force is generated on the shovel plate to enable substances shoveled and scraped from the end face of the shovel plate to be shaken off conveniently, and therefore, the situation that hot gas drives part of particle molecules to be drained and attached to the wall face of a smoke cavity is avoided.

The invention relates to the technical field of sand-in-water, discloses a preparation process and a construction process of three-in-one type sand-in-water. A purpose of the invention is to solve theproblems of multiple procedures, long construction period, high labor cost, difficulty in reaching of construction spraying standards and difficulty in standardizing of acceptance standards in the existing construction process. The preparation process comprises: 1, preparing a glue solution; 2, preparing a protection agent; 3, preparing a specially-made color paint; 4, preparing a protection emulsion; and 5, granulating and preparing according to a certain ratio. Compared with the original sand-in-water construction process with characteristics of complex procedure, a large variety of used materials, more control links, high time consumption, high labor consumption, high cost and high construction acceptance difficulty, the construction process of the invention simplifies the multiple procedures and the multiple materials, reduces the time cost and the labor cost, enhances the self-control and self-detection capacity of the constructor, simplifies the acceptance standard, and eliminates the technological operation that a black paint can be covered through full-spraying by the constructor after middle coating.

The invention discloses a scandium aluminum alloy conductor low-voltage rubber jacketed flexible cable for offshore wind power generation, which belongs to the field of wires and cables. The scandiumaluminum alloy conductor low-voltage rubber jacketed flexible cable comprises a cable core, a water-blocking wrapping tape and an outer sheath. The water-blocking wrapping tape is wrapped on the outerside of the cable core. The outer sheath is extruded on the outer side of the water-blocking wrapping tape. The cable core comprises three power wire cores, a plurality of supporting frames and a ground wire cores. The ground wire cores are arranged in the center of the interior of the cable core. The centers of the interiors of the ground wire cores are filled with a ground wire core conductor.The outer side of the ground wire core conductor is extruded with a ground wire core insulating sleeve. The outer sides of the ground wire cores are sleeved with supporting frames. The three power wire cores are arranged between the supporting frames respectively. Cable cores are effectively fixed and supported by adopting the spirally arranged supporting frames, so that the mutual extrusion deformation among the cable cores is avoided. The structural strength, the ductility, the tear resistance and the like of the cable core of the scandium aluminum alloy conductor low-voltage rubber jacketedflexible cable are effectively improved. The defect that a traditional cable is poor in bending performance is overcome. The scandium aluminum alloy conductor low-voltage rubber jacketed flexible cable is effectively suitable for a low-voltage cable and is convenient to popularize for a long period of time.

The invention relates to a method for preparing no-solvent green styrene-series cation exchange resin and belongs to the field of preparation of cation exchange resin. A crosslinking agent is adoptedto improve the elasticity and the pressure resistance of a styrene resin framework; a secondary polymerization method is adopted to increase the strength of the frameworl; high-concentration sulfuricacid is adopted to quicken a reaction and to improve the efficiency; and a multi-gradient concentration step-by-step acid nesting method to reduce intense heat release of sulfuric acid during cleaning. Disadvantages of a process which adopts dichloroethane as a swelling agent for a synthetic reaction are avoided, resin with the same performance and indexes as ion exchange ion which is prepared bynot taking dichloroethane as the swelling agent, and owing to frequent use of a water phase, environmental pollution of the water phase can be reduced. Resin prepared by the method is a dichloroethane-residue-free green product, and can be more deeply applied to industries including drinking water, food, medicines and the like.

The invention discloses a low-voltage rubber-sheathed soft cable with a scandium-aluminum alloy conductor for offshore wind power generation, which belongs to the field of electric wires and cables, and includes a cable core, a water-blocking wrapping tape and an outer sheath, and the outside of the cable core is wrapped with a water-blocking wrapping The outside of the water-blocking tape is extruded with an outer sheath; the cable core includes 3 power cores, multiple support frames and 1 ground core, and the ground core is placed inside the cable core. In the center, the center of the ground wire core is filled with a ground wire core conductor, and the outside of the ground wire core conductor is extruded with a ground wire core insulating sleeve, and the outside of the ground wire core is equipped with a support frame. The power wire cores are respectively placed between the supporting frames. The invention effectively fixes and supports the wire cores by adopting a spirally arranged support frame, avoids mutual extrusion and deformation of the wire cores, and effectively increases the structural strength, elongation and tear resistance of the cable core, etc., and solves the traditional cable bending performance Poor shortcomings, and effectively applicable to low-voltage cables, easy for long-term promotion.

The present invention provides a public transportation IC card internet payment system and a payment method thereof. The current payment ideas are changed, riding identification and payment functions of a public transportation IC card are separated, neither riding nor network payment of a passenger are neglected, and the passenger does not need to go to specified places for prepayment of the public transportation IC card and only needs to guarantee that a deduction account assorted with the IC card has money, thereby omitting the trouble for a user to go to a public transportation IC card service point for prepayment, bringing great convenience for passengers, greatly reducing logistics service personnel of public transportation companies, such as on-site charging persons and money counting staff, and lowering public transportation operating costs.

The embodiment of the present invention discloses a comprehensive energy integration e-CIM model design method based on metadata, including the following steps: constructing an energy network e-CIM topology model; expanding the energy network e-CIM topology model based on metadata; Design the interface of the energy network e-CIM topology model; design the classes and associated classes of the energy network e-CIM topology model. The embodiment of the present invention has the following advantages: it solves the integrated model problem of "source, network, load, storage and use" of comprehensive energy, improves the interoperability of the system, unifies the data interface standard, saves a lot of manpower and material resources, and is very good It fills the gap in the application of public information model in multi-energy synergy and complementarity, and has great practical significance.

The invention discloses an anti-interference scandium-aluminum alloy conductor control rubber sheathed flexible cable and belongs to the field of wires and cables. The anti-interference scandium-aluminum alloy conductor control rubber sheathed flexible cable comprises a cable core, a waterproof filling strip, a first waterproof wrapping tape, a metal braided shielding layer, a second waterproof wrapping tape, and an outer sheath. The outer side of the cable core is wrapped in the first waterproof wrapping tape. A gap between the inner side of the first waterproof wrapping tape and the outer side of the cable core is filled with the waterproof filling strip. The outer side of the first waterproof wrapping tape is wrapped in the metal braided shielding layer. The second waterproof wrapping tape is extruded on the outer side of the metal braided shielding layer. The outer sheath is extruded on the outer side of the second waterproof wrapping tape. The cable core is formed by intertwiningthree control wire cores. The cable core is formed by intertwining the control wire cores, thereby improving the overall structural toughness and strength of the cable core, avoiding the stressed fracture deformation during the use of the cable, improving the structural strength, the ductility and tear resistance of the cable core, solving the poor bending performance of a traditional cable, and facilitating long-time promotion.

A beam-column system modular splicing method solves the problems of low construction efficiency, long construction period, large equipment investment, high labor cost, and unfavorable environmental protection and energy conservation existing in the prior art. In this beam-column system modular splicing method, a number of tenon beams are inserted into the beam-column connection cavity of the flange fastening plate, and several groups of beam columns, lower chord columns and beam columns respectively arranged below and above the flange fastening plate are used. The locking of the upper chord and the beam column mortise and tenon lock between the upper end of the lower chord of the beam column and the lower end of the upper chord of the beam column, firmly connect the tenon beam, the lower chord of the beam column and the upper chord of the beam column to the beam column of the flange fastening plate At the same time, the upper ends of the upper chords of each beam column are respectively connected to the lower ends of the lower chords of the beam column connected under the upper flange fastening plate through the beam column connection column. The beam-column system constructed by the modular splicing method has strong variability, simple structure, reasonable force, convenient installation and disassembly, easy maintenance, light structure weight and strong extensibility.

The invention discloses an optimizing method for pelletizing production integrating a chain-and-grid conveyer, a rotary kiln and a circular cooler which are triune. Based on material and heat exchange inside single equipment and among the three devices, heat supply and distribution of the chain-and-grid conveyer, the rotary kiln and the circular cooler are optimized online by adopting a technology of combining a mathematic model and expert control. The mathematic model is a triune heat and mass transfer model. A coupling relationship among a chain-and-grid conveyer model, a rotary kiln model and a circular cooler model is considered in construction. The heat and mass transfer model is applied to a pelletizing production process, so that the production process is transparent. Parameter control in the production process is carried out by adopting an expert control rule library, thereby optimizing the production process.

The invention relates to an object register system based on mobile phone Bluetooth, and belongs to new application of wireless communication technology in the field of object register. The object register system is designed to save the cost of the prior register system, improve code reliability and security, save resources and promote environmental protection. The invention adopts the basic designidea that the Bluetooth wireless technology is used as a code interaction passage of the register system and a user mobile phone end, a user mobile phone is used as a terminal for transceiving codes,an AVR control unit (U1) is a core, and a liquid crystal display module (LCD 1) displays the operation prompt. The system uses an electronic file form as a code carrier to be stored at the user mobile phone end, realizes support for the wider mobile phone end by using OBEX (object exchange protocol) in a Bluetooth protocol stack, has universality, achieves encryption algorithm and stores data byusing hardware, and has high security and stability. The system is popularized and used in a large range to greatly reduce the requirement for printing paper so as to lighten environment pollution generated during papermaking.

The invention relates to a hydraulic connection sleeve (10) for connecting hydraulic lines (52, 54, 73, 74, 92, 94) for a hydraulic power switch drive (98), comprising at least two Hollow cylindrical base (12,60,77) with annular grooves (14,16,62,64,78,79) encircling its outer cylindrical surface, the annular grooves having sealing rings (18,20,66, 68,80,81), wherein the base body (12,60,77) is made of a material having a first modulus of elasticity. The hydraulic connection sleeves (10) are arranged to be inserted one above the other into the hydraulic lines (52, 54, 73, 74, 92, 94, ), wherein gaps are formed between the substrate (12,60,77) and the hydraulic lines (52,54,73,74,92,94) such that the modulus of elasticity of the first material relative to that of the second material Due to the lower modulus of elasticity when loaded with internal pressure, the matrix (12,60,77) expands more strongly than the hydraulic lines (52,54,73,74,92,94) and is thus technically The resulting gap is closed in the region of the sealing ring. Furthermore, the invention relates to a hydraulic connection ( 50 , 72 , 96 ) having the above-mentioned hydraulic connection sleeve ( 10 ). Additionally, the invention relates to a hydraulic connection plug (100, 120) for closing an open hydraulic line (102).