91results about How to "Reduce engineering investment" patented technology

The invention discloses a method for recycling ore pillars by a middle-deep hole and deep hole united blasting technique. The method comprises the following steps: arranging middle-deep hole drilling drifts on barrier pillars of a worked-out chamber; arranging a plurality of rows of middle-deep hole blast-hole sets on the walls of the middle-deep hole drilling drifts; arranging a cutting slot gate way in each middle-deep hole drilling drift, and arraying a plurality of groups of blast-hole sets in the cutting slot gate way; excavating a deep hole drilling drifts in top pillars and arranging a plurality of rows of deep hole blast-hole sets on the walls of the deep hole drilling drifts; arranging nonel detonators on the bottoms of the middle-deep hole blast holes and the middle parts of the deep hole blast holes; using a complex network structure to be connected with the blast holes; using non-electric nonel detonators to detonate the main detonating cord for detonation, and detonating branch detonating cords by the main detonating cord; transmitting detonation wave to each non-electric millisecond detonator section by the connected detonators, and controlling each row of blast holes to detonate in sequence to complete ore pillar detonation; and recycling the detonated ore pillars after ventilation. With the adoption of the method, the barrier pillars and top pillars above the bottom pillars can be once detonated, thereby rate of ore dilution is reduced and the recovery rate is improved.

The invention relates to coal mine underwater treatment technology, in particular to a stope face roof water pre-drainage construction method, which solves the technical problem of treatment of a water-bearing bed on a coal seam of a stope face. As the process of stoping on the stope face includes down stoping firstly and up stoping secondly, stope face roof water is drained in advance through roadways beside the stope face before stoping, a drill site chamber and a water bin are constructed at the lowest position of each of the roadways, two drainage pipelines are paved on each of the roadways, an independent drainage system is utilized, drainage holes are drilled in the drill site chamber towards the stope face roof, and water for drilling is led into the water bin through hoses directly and is drained by the drainage system of the roadways. Since roof water is drained in advance, water inflow during the stoping process is reduced effectively, troubles to production of coal mines due to the roof water are eliminated, affection of flood disaster to production is avoided, a safe and comfortable working environment is provided for the stoping operation, and conditions for stability and high yield of the stope face are created.

The invention relates to a cast-in-place support platform for bridge cast-in-place construction, and the platform is characterized by consisting of a movable seat, a hydraulic jack, a steel pipe concrete vertical column, stable tie bars on a longitudinal surface, a horizontal surface and a plane, a spherical hinge support, a support primary beam, a support secondary beam, a reinforcing diagonal rod, a distribution rib, a large steel mould at the bottom of the beam, a support and pier top fixed connecting system, a pier top crossbeam, a partial template of a pier tope, a pier top large tonnage hydraulic jack, an undercarriage hoist or a chain block in the beam, an undercarriage steel cable and the like; all the components are spliced detachably and interchangeably; the connection of all the components is mainly realized through bolts; and the cast-in-place construction of a bridge can be carried out after a cast-in-place support is assembled according to the actual situation on the site and the beam body template is arranged on the support. The universal bridge cast-in-place support has the biggest characteristics of good practicality, high standard degree, high load bearing capability of the support system, low requirement on the load bearing capability of a foundation, settlement monitoring and automatic compensation functions; and is applicable to the cast-in-place construction of simple support beams, continuous beams and arch bridges; has few assembled and disassembled parts and no components with large sizes after being disassembled, is convenient to transport, is the support equipment for bridge cast-in-place construction with the highest standardization level and the best universality so far, and can significantly shorten the construction period and save the cost.

A domestic waste biological treatment method adopts biological dry anaerobic fermentation for producing biogas, and is as follows: large impurities, combustible materials and ferromagnetic metals are sorted form waste, 90-110m<3> of biogas can be produced from the sorted organic waste per cubic meter by biological dry anaerobic fermentation, leachate circulation and spray inoculation of anaerobic bacteria and humidifying, the biogas can be purified and compressed to be used as a vehicle fuel and household energy, large impurities and light combustible materials can be further screened from the biogas slag by entire membrane covering and biological aerobic drying, the screened combustible materials can be used as a winter fermentation tank heating fuel, the biogas slag can be used as a compounding fertilizer raw material and an organic fertilizer for application; biogas productivity is high, hydrogen sulfide content in the biogas is low, no biogas slurry is discharged, the method is free of secondary pollution, the fertilizer efficiency is fully retained in the biogas slag, the fertilizer efficiency is high, equipment is simple, low investment and operating cost are low, land occupation is less, processing capacity is large, and the method is easy to implement and promote.

The invention relates to a concrete spray steel mesh sandwich formwork cast-in-place shear wall construction method and a shear wall manufactured by using the method. The construction method comprises the following steps: (1) mounting matched inner and outer steel mesh sandwich light plates on the preserved formwork positions; (2) spraying concrete on site on the inner side surface of the inner steel mesh sandwich light plate and the outer side surface of the outer steel mesh sandwich light plate; and (3) and casting concrete in place between the inner and outer steel mesh sandwich light plates. The shear wall is provided with the inner and outer steel mesh sandwich light plates; a middle concrete layer is cast between the inner and outer sandwich light plates; and inner and outer side surface concrete layers are sprayed on the outer side surface of the outer sandwich light plate and the inner side surface of the inner sandwich light plate respectively. By adopting the method in the invention, integration of formwork, insulation and structure is realized, the construction speed is obviously improved, the service life of wall, particularly insulation layer, is obviously prolonged, and the capability of the wall resisting shear force is obviously improved.

The invention relates to a linear separated guide beam template table, wherein its annular linear beam is connected to the inner side of template; the annular linear beam and the table support top template support screw disc, side template support lead screw and bottom template support lead screw between them; the table via walking device is supported on the table walking steel track above the bottom template; one table and two bottom templates are alternatively matched; the bottom template is fixed with guide beam walking steel track which supports the detachable support guide beam; the bottom of detachable support guide beam has walking wheel, while its top is detachably connected via adjustable base and table; the end of detachable support guide beam via the end base of guide beam is supported on the support concrete structure, while its one end is connected to the drawing system; another bottom template is at the concrete pouring position. And it can be used on the template table machine whose section diameter is 6-3m, with large operation space and lower cost.

The present invention discloses a low energy consumption hydrocracking method for producing a high-quality chemical industry raw material. According to the method, a raw material oil and hydrogen gas are subjected to heat exchange two times, and then sequentially pass through a hydrorefining reaction zone and a hydrocracking reaction zone, wherein the hydrocracking reaction zone comprises at least two hydrocracking catalysts, the upstream is filled with a catalyst I, the downstream is filled with a catalyst II, the catalyst I contains 30-70 wt% of a modified Y molecular sieve, the catalyst II contains 15-50 wt% of the modified Y molecular sieve, and the modified Y molecular sieve content in the catalyst I is 10-30% higher than the modified Y molecular sieve content in the catalyst II. According to the method of the present invention, the high temperature high pressure countercurrent heat transfer technology and the hydrocracking catalyst grading technology are organically combined, and the hydrocracking reaction heat is comprehensively utilized, such that the characteristics of the two different types of the hydrocracking catalysts are completely provided, and the catalyst selectivity is maintained while the target product quality is improved, and the project investment and the operating energy consumption are reduced.

The invention discloses a construction method of a ground sectional water-stop curtain, which comprises the steps of: obtaining ground water occurrence information and stratum structure information in a trunk region to be constructed and tunneled; positioning a position of a high-pressure fuel pipeline in the trunk region to be constructed and tunneled; carrying out high-pressure jet grouting on a continuous multi-chamber water-stop curtain on the top in the trunk region to be constructed and tunneled, distributing the multi-chamber water-stop curtain at two sides of a tunnel excavation contour line; reinforcing and closing a cross gap region in a space range of the high-pressure jet grouting water-stop curtain and an intermediate-pressure fuel pipeline; and forming a ground sleeve valve grouting vault reinforcing ring above a tunnel to be constructed and tunneled. By adopting the construction method of the ground sectional water-stop curtain in the embodiment of the invention, better conditions are created for the tunneling, the construction progress is accelerated, the construction risk and engineering input are reduced, the ground subsidence is effectively controlled, and the safety of a building close to an underground pipeline is ensured.

The invention discloses an automatic rainwater collecting distribution station, belonging to the technical field of water conservancy projects. The main structure of the automatic rainwater collecting distribution station comprises a main body, a drainage execution unit, a drainage outlet, a collecting electrical execution unit, a collecting water outlet, a water quality conductivity sensor, a water inlet, an overflow vent, a power distribution control box and the like, wherein the main body is divided into a rotational flow filtering cavity and an outer cavity, the rotational flow filtering cavity and the outer cavity are fastened at the top by virtue of a flange and a bolt, the upper part of the rotational flow filtering cavity is a mechanical filtering hole and a mechanical filter screen, the lower part of the filtering cavity is a conical stereo cavity, the water inlet and the collecting water outlet are arranged at the two sides of the rotational flow filtering cavity, the overflow vent is arranged at one side of the rotational flow filtering cavity, the overflow vent is higher than the water inlet and the collecting water outlet, the water inlet is directly communicated with the conical stereo cavity, the bottom of the rotational flow filtering cavity is connected with the drainage execution unit and is directly communicated with a drain outlet, and the water inlet and the overflow vent are all fastened and connected with the rotational flow filtering cavity by virtue of flange bolts. The invention has compact structure and small volume, the construction and mounting are simple, and the control integration can be realized.

The invention relates to a construction method for prefabricating a directly-buried uncompensated centralized heat supply pipeline by electrically preheating. The method comprises the following steps of: (1) grooving, adjusting the coordinate and scale height of the heat supply pipeline, and computing the preheating temperature and the designed elongation of the heat supply pipeline; (2) controlling the sand refilling height at a half to three quarters of the pipeline height H; (3) connecting the same-side end of the heat supply pipeline with preheating equipment through a cable respectively, and short-circuiting the other side of the heat supply pipeline through a cable; (4) arranging temperature sensors on the heat supply pipeline respectively; (5) recording the initial temperature of the heat supply pipeline and the initial position of a measuring point, starting temperature raising, controlling the temperature raising gradient within 1 DEG C per hour, and preserving heat after a preheating temperature is reached; (6) refilling sand into both sides of the heat supply pipeline, tamping, and controlling the preheating temperature within the range of + / -2 DEG C; (7) after the designed elongation is reached, shutting down the preheating equipment; and (8) performing subsequent construction according to the steps (1)-(7). The construction method disclosed by the invention is safe, reliable, easy and practical, is easy for accurately controlling construction equipment, and is consistent with the national policy of energy saving and emission reduction.

The invention discloses a multi-user access unit, which is integrated with a downlink optical receiver, an uplink optical emitter, a duplex filter, an EOC module and an EPON-ONU module, wherein the downlink optical receiver receives and demodulates a radio frequency signal and transmits the demodulated radio frequency signal to a high-frequency port of the duplex filter; the uplink optical emitter receives a returned radio frequency signal transmitted by a low-frequency port of the duplex filter and outputs uplink optical waves; the high-frequency port of the duplex filter receives the radio frequency signal demodulated by the downlink optical receiver, while the low-frequency port returns the radio frequency signal to the uplink optical emitter and simultaneously transmits the radio frequency signal to the EOC module; the EOC module is connected with the duplex filter to transmit the radio frequency signal and is connected with a radio frequency signal interface of a building to transmit the radio frequency signal to the building; and the EPON-ONU module transmits the radio frequency signal and transmits the received radio frequency signal to the EOC module. If all available resources are well configured, the multi-user access unit can support 64 users, is suitable for a conventional solution for HFC network deployment between optical fibers and the building, transmits data signals on coaxial cables so as to increase the Internet access bandwidth of the user, saves cost on engineering wiring and reduces engineering and fund investment.

The invention belongs to the technical field of hydropower station flood discharge, and discloses a three-dimensional numerical simulation method for a downstream scouring process of a flood dischargegate of a hydropower station when a hydropower station is stuck, which comprises the following steps: establishing a bed load sediment transport rate formula based on water flow randomness and bed sand distribution randomness based on riverbed sediment particle motion basic characteristics; based on the UDF macro function, conducting secondary development on Fluent software, extracting the bed surface node water flow shearing force, and calculating the bed surface sediment transport rate; and according to a riverbed scouring and silting balance principle, converting the change of the sedimenttransport rate between the nodes into the change of the node elevation along with time, so that the moving boundary grid nodes are controlled to move, and three-dimensional numerical simulation in the scouring process of the scouring pit is realized. According to model actual measurement data verification, a simulation result is basically matched with an actual measurement value; in the forming process of the scouring pit, the shear stress distribution of the bed surface is continuously changed along with the scouring deformation of the bed surface, namely the shear stress of the bottom wallsurface of the scouring pit at the initial scouring stage is larger, and the shear stress of the upstream slope wall surface in the scouring pit at the middle and later scouring stages is larger.

The invention relates to modified clay double-fluid grout. The modified clay double-fluid grout is formed by adding an adjuvant into modified clay grout and mixing, wherein the adjuvant is sodium silicate of which the baume degree is 39 degrees-42 degrees and the modified clay grout comprises the following components in parts by weight: 1 part of cement, 1 part of clay and 2 parts of water, wherein the addition of sodium silicate accounts for 10%-40% of volume of the modified clay grout; or 1 part of cement, 1 part of clay and 1.6 parts of water, wherein the addition of cement accounts for 10%-30% of volume of the modified clay grout. The invention also provides a grout-making and grouting process of the modified clay double-fluid grout.

The invention discloses an automatic stopping control system and an automatic stopping control method for a train station. The system comprises a first control module and a second control module, wherein the first control module is used for controlling the running state of a train, and the second control module is used for controlling the train to enter the station or leave the station. The methodcomprises the steps of determining the position of a track line, judging and processing train occupation, performing data marking, storage and steering control, and the like. The automatic stopping control system and the automatic stopping control method disclosed by the invention have the advantages that automatic stopping station identification and automatic entering and leaving statistics of amagnetic suspension train are realized, artificial regulation and control are not needed, the data processing efficiency and the program design reliability are improved, the steering control on the train is more flexible and reliable, and the whole interference resistance of the system is good.

The invention provides an AAO-MBR sewage processing device and an optimization operation method. The device mainly comprises an anaerobic tank, an anoxic tank, an aerobic tank and a membrane tank, and the anaerobic tank, the anoxic tank, the aerobic tank and the membrane tank are communicated with each other. The aerobic tank is composed of three galleries in series connection which are an aerobic tank c1, an aerobic tank c2 and an aerobic tank c3 in order. A first aeration system e1, a second aeration system e2 and a third aeration system e3 are arranged in the aerobic tank c1, the aerobic tank c2 and the aerobic tank c3 respectively and are connected with a blower through pipes and valves. Backflow systems are arranged between the membrane tank and the aerobic tank, between the aerobic tank and the anoxic tank and between the anoxic tank and the anaerobic tank respectively. The three galleries of the aerobic tank are subjected to interactive or alternative aeration on the premise that a lot of dissolved oxygen carried by backflow liquid in the membrane tank is fully utilized, operation energy consumption of an MBR technology is reduced, MBR technology energy saving consumption reduction optimization operation is achieved, and a nitrogen removal function of a traditional or present AAO-MBR technology is raised. The optimization operation method is suitable for optimization operation and control of various sewage processing technologies of an activated sludge process and MBR and has wide adaptability.

The invention discloses a three-dimensional modularized and ecologicalized modification system for a hard vertical protecting bank and a technology thereof. An enhanced treatment area, an emergent aquatic plant purification area and a submerged plant purification area are sequentially arranged on one side, close to a water body to be treated, of the vertical protecting bank, the bottoms are connected with the river bottom, the heights of all the areas are the flood water level, the normal water level and the low water level respectively, the widths of the areas are 0.5-0.8 time, 0.8-1.2 time and 1.1-1.3 times of the normal water level respectively, the bottoms of all the areas are filled with padding, and emergent aquatic plants and submerged plants are planted on the padding. When the water body to be treated gets close to the bank, the water body sequentially passes through all the areas with the different horizontal positions and is buffered by the planted plants, and the problem offlushing to the protecting bank is solved. Direct surface runoff pollutants sequentially pass through all the areas, and nitrogen and phosphorus are reduced greatly. The system has the advantages that the water quality purification effect is good, the stability of the protecting bank is high, the ecological environment is good, the technology is easy to operate, and the direct surface runoff pollutants are purified at the same time.

The invention discloses a traversing construction method for a tie bar arch, and relates to a bridge construction process. A main pier, a temporary pier and the tie bar arch are adopted in the method, wherein the span of the tie bar arch is 54 to 74 meters. The traversing method comprises the following steps of: 1, arranging a counterforce pier; 2, arranging an upper slipway and a lower slipway; 3, arranging and installing a jack; 4, arranging a stay wire type sensor; 5, traversing; and 6, jacking and lowering beams. By the method, the construction period is shortened, daily maintenance cost can be saved, the detached tie bar arch can be reused so as to save engineering investment to a great extent, and the method is high in safety.

The invention discloses a tunnel compartment wall lining construction method which comprises the following steps of: determining a walking route of a tunnel compartment wall template trolley in a tunnel to be constructed and carrying out a formwork erection operation through the tunnel compartment wall template trolley; carrying out concrete pouring on the tunnel compartment wall template trolley subjected to the formwork erection, controlling pouring time of concrete pouring; and demoulding the tunnel compartment wall template trolley to form a plurality of continuously-arranged compartment walls, which one end part of each of the continuously-arranged compartment walls is separated from a tunnel vault. By adopting the tunnel compartment wall lining construction method disclosed by the embodiment of the invention, the construction quality of the compartment walls can be better ensured, an assembly line work is easily formed, and the advantages of high construction speed, low project investment and construction risk, and the like are achieved.

The invention discloses a road passage underground project construction method which includes the following steps: (1) dividing a construction ground into three sections, namely an A section on one side, a B section on the other side and a C section in the middle, (2) closing the C section, constructing the C section, excavating earth in the surface layer, and making a roof plate of the C section, (3) backfilling the earth of the C section, constructing the A section, excavating earth in the surface layer to a bottom plate base layer, and making a base plate of the A section, (4) making wall plates of the A section, (5) making a roof plate of the A section, (6) backfilling the A section with the earth, constructing the B section, excavating earth in the surface layer to a bottom plate base layer, making a base plate of the B section and a base plate of the C section, making wall plates of the B section, and making a roof plate of the B section, and (7) backfilling the B section with the earth.

The invention provides a self-propelled tunnel grouting trolley. The self-propelled tunnel grouting trolley comprises a rack, a platform, a main girder, a traveling mechanism and lead screw lifting jacks; the rack is an open-spandrel framework and is arranged on the traveling mechanism; the main girder is arranged on the rack; the platform comprises a working platform and lower platforms; the working platform is arranged on the main girder; the lower platforms are respectively arranged under the working platform at the two sides of the rack along the direction of a tunnel; one ends of the lower platforms are vertically fixed on the rack, the upper sides of the end parts of the other ends of the lower platforms are connected with the main girder through first supports, and the lower sides of the end parts of the other ends of the lower platform are connected with the rack through second supports; the two side end parts of the working platform and the two side end parts of the lower platforms are connected on the rack through inclined struts; the lead screw lifting jacks are symmetrically arranged at the two sides of the working platform and the lower platforms; and the self-propelled tunnel grouting trolley has the advantages of being reasonable in structure, low in cost, capable of solving the traffic problem in the tunnel, realizing the synchronization of grouting, transportation and other operations, meeting the requirements of the engineering construction of diversion tunnels with large-sized cross sections and being rapid and efficient in grouting operation and capable of ensuring the construction period.

The invention provides cellulose pulp pretreatment equipment, which comprises a vertical stirring kettle. A kettle cover is arranged above the kettle body, a motor is disposed on the kettle cover and is connected to a stirring shaft, and the stirring shaft extends into the kettle body and is provided with stirring paddles. A porous pressing plate is disposed above the stirring paddles in the kettle body and is equipped with a center through hole, and the stirring shaft runs through the center through hole. The porous pressing plate matches with the kettle body cross section. The porous pressing plate is equipped with a plurality of holes, and can move up and down in the kettle body. According to the invention, the porous pressing plate can complete the technological requirements of pressing the pulp into a solvent. Pulp impregnation solvent swelling, mixing and pulping are finished in one kettle, equipment investment and engineering investment are saved, the manufacturing, energy consumption and management costs are saved, and the cellulose pulp pretreatment process is shortened.

The invention provides a blast furnace smoke recycling device. The blast furnace smoke recycling device comprises a tower body, a horn-shaped pipe, a smoke outlet pipe, a spraying component, a dehydrating component and a water injection pipe, wherein the horn-shaped pipe is arranged in the inner cavity of the tower body, the small end of the horn-shaped pipe extends from the top of the tower body, a predetermined space is kept between the big end of the horn-shaped pipe and the bottom of the tower body, and the spraying component is arranged above the horn-shaped pipe; the dehydrating component is arranged between the outer surface of the horn-shaped pipe and the inner surface of the wall of a tower; the smoke outlet pipe is arranged on the tower body and is communicated with the part, arranged above the dehydrating component, of the inner cavity of the tower body; the water injection pipe is arranged on the tower body and is communicated with a part, arranged below the dehydrating component, of the inner cavity of the tower body, and the water injection pipe is arranged on the big end of the horn-shaped pipe. The blast furnace smoke recycling device realizes smoke cooling, dehydrating and water sealing functions at the same time, project investment and occupying area are reduced, and the blast furnace smoke recycling device has the advantage of good cooling, dehydrating and water sealing effects.

The invention discloses a train automatic-parking executing system which comprises a servo motor, a driving beam, a driven beam, a turnout control relay, a trolley, a turnout structure with magnetic levitation plates and a turnout controller. The turnout structure with the magnetic levitation plates is arranged on the driven beam. The servo motor is mounted under the driving beam and connected with the trolley, the turnout control relay and the turnout controller. The driving beam and the driven beam are mechanically connected. The servo motor drives the trolley to drive the driven beam, underthe action of the driven beam, the turnout structure with the magnetic levitation plates, the driven beam and the driving beam are moved to a set rail as a whole, and thus a train runs to the set rail. An existing magnetic levitation rail structure is improved, levitating magnets are arranged in groove structures, airflow resistance is reduced, energy consumption of the magnetically levitated train is lowered, the safety guarantee capacity of magnetic levitation traffic is enhanced, and riding of magnetic levitation traffic is more quiet and comfortable.

The invention relates to a movable high-efficiency oily sewage treatment process. The process mainly solves the problem that station-building centralized treatment for small-block oil fields and scattered oil fields is high in project investment and processing cost. The process includes the following steps that 1),oily sewage produced after oil-water separation of an oilfield production fluid enters a hydrocyclone for oil-water separation, the treated effluent enters a first buffer water tank, water in the first buffer water tank is elevated, passes through a flowmeter and then enters a microbubble cyclone air flotation machine, and the effluent from the microbubble cyclone air flotation machine enters a second buffer water tank; 2), the water in the second buffer water tank in the first step is elevated, passes through a flowmeter and then enters a double-layer media filter for filtering, the filtered effluent enters a membrane filter, and the effluent filtered through the membrane filter enters a third buffer water tank, passes through a fourth elevating pump and then a flowmeter and finally is elevated, discharged and re-injected. The process reduces the costs of the project investment and the production process, and guarantees efficient, economical and effective development of oilfields.

The invention provides a self-propelled tunnel grouting trolley. The self-propelled tunnel grouting trolley comprises a rack, a platform, a main girder, a traveling mechanism and lead screw lifting jacks; the rack is an open-spandrel framework and is arranged on the traveling mechanism; the main girder is arranged on the rack; the platform comprises a working platform and lower platforms; the working platform is arranged on the main girder; the lower platforms are respectively arranged under the working platform at the two sides of the rack along the direction of a tunnel; one ends of the lower platforms are vertically fixed on the rack, the upper sides of the end parts of the other ends of the lower platforms are connected with the main girder through first supports, and the lower sides of the end parts of the other ends of the lower platform are connected with the rack through second supports; the two side end parts of the working platform and the two side end parts of the lower platforms are connected on the rack through inclined struts; the lead screw lifting jacks are symmetrically arranged at the two sides of the working platform and the lower platforms; and the self-propelled tunnel grouting trolley has the advantages of being reasonable in structure, low in cost, capable of solving the traffic problem in the tunnel, realizing the synchronization of grouting, transportation and other operations, meeting the requirements of the engineering construction of diversion tunnels with large-sized cross sections and being rapid and efficient in grouting operation and capable of ensuring the construction period.

The invention relates to a power meter and discloses an intensive type touch screen intelligent power meter. The intensive type touch screen intelligent power meter has the measurement, display and communication functions of an existing meter, and also has the intensive display, wireless communication, remote monitor and other functions of a touch screen. According to the adopted technical scheme, the intensive type touch screen intelligent power meter comprises a machine case, a plurality of parameter collection modules are installed inside or outside the machine case, the parameter collection modules are connected to a processing control module through wires or RS485 communication lines, and the processing control module is connected to a touch screen display module and a communication module through wires. The power meter has the RS485 communication function and has the GSM communication function additionally, the temperature and switching state detection display function is additionally provided for the meter, the monitoring capacity of power transmission and distribution devices by users is increased, workloads of operators and maintainers are reduced, and intelligent standard of power transmission and distribution devices is improved.

The invention belongs to the technical field of communication and measurement of wireless sensor network, and discloses a vibrating wire sensor acquisition system, method and device based on the wireless sensor network. The vibrating wire sensor acquisition system based on the wireless sensor network comprises an embedded processor module, a sensor excitation and measurement module, a wireless sensor network module and a power supply module. According to the vibrating wire sensor acquisition system, method and device based on the wireless sensor network, the nearby installation of a sensor isrealized, the bondage of a large number of cables can be rid of, interference and signal attenuation caused by long cables are eliminated, system construction cost and construction period are reduced,and a ''cable-free'' system is realized. The low power consumption design of an acquisition instrument can adopt batteries or solar energy for power supply, so that the limitation of alternating current power supply is avoided, alternating current dose not exist, power frequency interference on the alternating current and the introduction of lightning can be eliminated, and the reliability of thesystem is improved; and the acquisition instrument is small in size and made of metal, and adopts an embedded structure, both ends of the acquisition instrument are sealed and fixed by cover plates,and the acquisition instrument can be installed anywhere without providing additional protection.

The invention discloses a reinforcement protective cover cushion block fixing method, which comprises the following steps of: (1) preparing a plurality of cushion blocks with same structures, wherein each cushion block is a hexahedron, upper and lower surfaces and one side wall surface I of each cushion block are planes, a steel tank is embedded on one side of each cushion block close to the side wall surface I, and the other three side wall surfaces of each cushion block are arc surfaces; (2) using adaptive thin steel strips to penetrate through the steel tanks; connecting the cushion blocks in series to form a cushion block string; and pressing and bending steel strips on two sides of each steel tank; and (3) if a reinforcement framework is to be prefabricated, prefixing the cushion block string on a bound reinforcement framework by a steel strip; and then lifting the reinforcement framework into a template. According to the invention, the thickness of a reinforcement protective cover can be guaranteed; as the field bulk binding of the cushion blocks is changed into centralized prebinding, the field operation time can be greatly reduced, obvious technical and economic benefits are obtained, the fixing method is beneficial for accelerating construction progress and project investment is saved. The reinforcement protective cover cushion block fixing method disclosed by the invention is especially suitable for object side surfaces or bottom surfaces with small reinforcement distances and difficulties in binding the cushion blocks.

A device for enhancing permeability and drainage of gas in a soft coal seam recovery working face, including a drill pipe, a high-pressure water injection pump, a sand filling device, an expandable packer, a ball sliding sleeve and a drill bit, and the high pressure water injection pump and the sand filling device are connected to the left end of the drill pipe. The expandable packer is set on the drill pipe, and the ball sliding sleeve is rotatably sleeved on the drill pipe and located between the adjacent expandable packers. Between the center of the ball sliding bush and the sandblasting nozzle, the drill pipe is provided with spray holes corresponding to the ball sliding bush, and the drill bit is arranged at the right end of the drill pipe.

The invention provides a reactor single-layer safety shell and belongs to the technical field of nuclear power engineering structures. The safety shell structure comprises a cylinder body and a dome.Single inner side steel plate concrete or single side steel plate ultrahigh-performance concrete structures are adopted in the cylinder body and the dome. Multiple heterotropic or orthographic T-shaped stiffening ribs, studs and smooth-surface shear-resisting ribs are arranged on the outer surfaces of steel plates, wherein the heterotropic or orthographic T-shaped stiffening ribs have shear-resisting mono-directional non-pulling-resistance characteristic, and the smooth-surface shear-resisting ribs are provided with straight thread anchor plates. Foam materials with the calculated thickness are bonded to rib plate flanges, stud caps and top faces of the shear-resisting anchor plates. Rib plates, the studs and the side faces of the shear-resisting ribs are coated with thin layers of grease-like materials correspondingly. The permanent and temporary combination with reserved hole design is considered in the dome, and a cover plate and a hole are connected and disconnected through a ring-shaped flange and a high-strength bolt. A modular design building method is adopted in the safety shell. The single-side steel plates and the stiffening ribs can replace some concrete pouring formworks. By the adoption of the safety shell, the requirements for pressure bearing and sealing in the safety shell can be ensured, external events and large aircraft impact can be prevented, and the safetyshell has remarkable project economy.