50results about How to "Reduce maintenance investment" patented technology

A prefabricated foundation of a combination box transformer substation with a reactive compensation function comprises prefabricated stand columns (1), prefabricated ring beams (2), prefabricated baffles (3) and prefabricated supporting beams (4), and is characterized in that the prefabricated stand columns (1) and the prefabricated ring beams (2) are hinged; the prefabricated supporting beams (4) and the prefabricated stand columns (1) are hinged; the prefabricated baffles (3) and the prefabricated stand columns (1) are connected through notches. The prefabricated foundation of the combination box transformer substation with the reactive compensation function has the advantages that only installation and connection need to be carried out on site, the project building period is shortened, and the maintenance investment is reduced.

The invention provides a modular spliced slide. The modular spliced slide is formed in a manner that a plurality of modular sub slides are spliced in sequence, each sub slide comprises left and rightarmrest baffle plates and a slide plate, an antiskid device is arranged on the bottom surface of the slide plate, a connecting device and an angle adjusting limiting device are arranged at the front and rear ends of the slide plate, the connecting devices are used for the splicing the sub slides, and the angle adjusting limiting device is used for adjusting the splicing angles of the sub slides. According to the modular spliced slide, the occupancy cost of land is saved due to construction according to the local conditions, and the free combining and splicing are flexible and convenient.

The invention provides an intelligent energy-saving controller. The intelligent energy-saving controller solves the problems that a control circuit power conversion link consumes energy and power dissipation is caused as an electromagnetic coil of a load power source switch control component needs electric energy to maintain state in the prior art. The intelligent energy-saving controller is formed by correspondingly connecting a self-holding type solenoid valve, a power supply circuit, a reset drive circuit, a monitor load state circuit, a manual switch control circuit, a delay selection control circuit, an infrared remote control circuit and a remote communication control circuit. The functions of energy conservation and electrical / electric appliance no-loading / standby automatic power off power saving are achieved, and the purposes of decreasing occurrence frequency of electrical accidents and prolonging the service life are achieved.

The invention provides a structure method for expansion joint of a cement concrete pavement, belonging to the technical field of building construction. The method comprises the following operation steps: firstly, conducting meteorological survey and geological investigation for a construction site, and determining temperature load size and roadbed geological conditions; then determining construction parameters of ground anchors, conducting construction of the ground anchors after finishing pavement bed course; determining horizontal anchor fixed length c of the end of a reinforced steel hanger and horizontal width b of the lower end of the steel hanger around the ground anchors in accordance with the design specification of a reinforced concrete structure, and arranging a reinforced steelhanger mesh at the position of row-like ground anchors and connecting the steel hanger mesh with distributed reinforcements in the cement concrete road surface in a welding mode; and finally installing anchor seats of the ground anchors again, connecting the anchor seats with the road surface reinforcing mesh in the welding mode, and pouring the road surface in a construction advance direction. The invention keeps integrity of the road surface, simultaneously, provides a certain vertical restrain for road slabs so as to avoid warpage of the road surface.

The invention relates to a biogas residue biological brick and a greening method for vertical greening of building exterior walls, belonging to the fields of human settlement environment science and urban forestry science. The present invention comprises a sintered brick body and a biological brick body inlaid inside it, the surface of the sintered brick body is sunken inward to form a picture frame structure, the biological brick body is stuck into the picture frame structure, and the periphery of the sintered brick body is sunken inward to form a A running water tank, a water hole is opened on the intersecting surface of the water tank and the sintered brick body, and the water flow hole leads to the biological brick body; the surface of the biological brick body is provided with a planting hole. The bricks are paved on the surface of the building and watered by rainwater, building roof drainage or artificial watering to complete the vertical greening. The invention combines the biological brick body with the traditional sintered brick, so that the hardness and appearance are more suitable for building exterior walls, the manufacturing cost is low, the transportation is convenient, and the later maintenance investment is small. .

The invention discloses a mobile security instant messaging method based on multiple public IM channels, aiming to solve the problems of mobile instant messaging data being monitored and recorded, stolen and leaked, attack cracking and source tracing. The technical solution is: constructing a mobile security instant messaging system based on multiple public IM channels composed of a control center subsystem and an instant messaging client. The control center subsystem generates configuration files required for instant communication according to communication requirements. The instant messaging client encrypts and fragments the plaintext when sending, steganographically writes the fragmented ciphertext group into random pictures and sends them to different public IM channel servers; when receiving, it receives ciphertext pictures from different public IM services, and assembles, Decrypt and restore messages. The invention can ensure the security of messages in the transmission process, improve the anti-analysis, anti-tampering, anti-monitoring and anti-tracing capabilities of the instant messaging process, and can reduce the software, hardware and maintenance investment required for self-built services, avoiding single point failures .

The invention discloses a software implementation method of railroad bed multiline design, which comprises the following steps: (A) constructing a railroad bed design software-developing overall framework by using a concept of design line sets, design lines and benchmark design lines, and synchronously designing any multiple design line sets and design lines according to a unified method; (B) setting membership relation between the design line sets and the design lines; (C) respectively carrying out grouping management on basic data used for the design and appointing a certain group of basic data adopted by the design to each design line; (D) obtaining the filling and excavating height table data by utilizing the filling and excavating height table data of each design line, the membershiprelation between the design line sets and the design lines and the line spacing data of each design line; (E) when the railroad bed cross section design treatment is carried out, considering the design order of each design line set to realize the harmonious design among the design line sets; and (F) organizing the calculation and the statistics of project number by taking the design line set as aunit.

The invention discloses a fume condensed-water flue-dust conveyance system of a supercharged oxygen-enriched coal-fired boiler. The fume condensed-water flue-dust conveyance system comprises a high-pressure condensed-water recovery part, a coal ash injection part and a main ash conveyance pipe. The high-pressure condensed-water recovery part consists of a supercharged combustion hearth, a dust remover and a condenser. The coal ash injection part consists of an ash leakage bucket, a mill exhauster and a coal ash injector. The main ash conveyance pipe consists of an ash conveyance pipeline, a first regulating valve, a fourth regulating valve and a manometer, and the high-pressure condensed-water recovery part and the coal ash injection part are connected through the main ash conveyance pipe. According to the fume condensed-water flue-dust conveyance system disclosed by the invention, the coal ash is conveyed to an ash yard by utilizing the condensed water with power capacity in the fumeof the supercharged oxygen-enriched coal-fired boiler, the alkalinity of the coal ash is neutralized by utilizing the acidity of the fume condensed water so that the pipe is prevented from being scaled, and the purposes of water and energy conservation and convenience for maintenance are realized.

The invention discloses a zinc oxide powder desulfurization control device based on online monitoring data locking and a zinc oxide powder desulfurization control method. The zinc oxide powder desulfurization control device comprises an absorption tower and a chimney, wherein the chimney is connected to the absorption tower; the absorption tower is also connected with an absorption liquid storage tank which is used for supplementing absorption liquid in the absorption tower and a discharged liquid storage tank which is used for collecting the absorption liquid discharged from the absorption tower; a liquid supplementation pneumatic valve is arranged between the absorption tower and the absorption liquid storage tank; a discharged liquid pneumatic valve is arranged between the absorption tower and the discharged liquid storage tank; the chimney is connected with an automatic monitor; the automatic monitor is connected with a central control system; the central control system is used for carrying out signal control on the liquid supplementation pneumatic valve and the discharged liquid pneumatic valve. According to the zinc oxide powder desulfurization control method disclosed by the invention, the problems of data drift or distortion, multivariable detection data asynchronization and the like existing in a traditional control method are avoided, the arithmetic logic of the central control system is simplified, the configuration difficulty of a DCS (Distributed Control System) is reduced, the inspection equipment investment and the maintenance investment are reduced, and the rate of reaching the emission standard of tail gas SO2 in each year is greater than or equal to 98 percent.

The invention discloses a construction method for replacing an intermediate furnace body of a blast furnace. Only the damaged intermediate furnace body is integrally dismounted and mounted. The construction method for replacing the intermediate furnace body of the blast furnace comprises the following steps of: a, carrying out load checking calculation and examination on a blast furnace frame; b,reinforcing an upper furnace body structure with a damaged furnace body on the blast furnace frame; c, arranging a feed / discharge door on the upper furnace body structure with the damaged furnace body and arranging hoisting devices inside and outside the furnace body at the feed / discharge door; d, dismounting a damaged furnace shell and cooling equipment by using the hoisting devices; e, mountinga new furnace shell and cooling equipment by using the hoisting devices; and f, dismounting the hoisting devices in the step b and closing the feed / discharge door. The device weight above the damagedfurnace body can be borne by the blast furnace frame so that only the damaged intermediate furnace body part can be dismounted and mounted in the dismounting and mounting processes, the overhaul investment of the blast furnace can be greatly decreased, the engineering cost is decreased, and the overhaul period is effectively shortened.

The invention relates to a supporting rotating control head of an underbalanced coal bed methane well drilling, which is mainly used for an underbalanced well drilling and belongs to the filed of well control equipment of underbalanced well drillings. The supporting rotating control head comprises a rotating assembly, a hoop assembly and a shell assembly, the rotating assembly is arranged in the shell assembly, the hoop assembly installed on the upper end of the shell utilizes a manual mode to close the hoop body, and the rotating assembly is fixed to complete equipment assembling. The inner side of the hoop body is provided with a two-cone to strengthen righting effect, the rotating assembly utilizes a centralization lubrication structure to lubricate a centripetal force and push bearingcombination and a dynamic seal component to prolong the service life of equipment, the lower end of the rotating assembly is provided with a rubber core to guide returning drilling medium to realize safety control. The shell assembly utilizes a structure of separating the shell body and a bypass port, thus facilitating replacement, enhancing the continuous working capability and improving equipment use ratio of the control head. The device has simple and compact structure, easy transportation, low equipment cost, maintenance convenience, and high stability and safety, and is suitable for needs of coal mining with three areas, namely area low in pressure, saturation and infiltration geological characteristics in China.