33results about How to "Meet the requirements of safe operation" patented technology

The invention provides a low-temperature storage-transport container which is provided with an inner shell and an outer shell, wherein the inner shell comprises an inner cylinder and two inner sealing heads located at two ends of the inner cylinder; the outer shell comprises an outer cylinder and two outer sealing heads located at two ends of the outer cylinder; a supporting structure is arranged between the inner shell and the outer shell; the supporting structure comprises a fixed supporting component, a sliding supporting component and an anti-rotating supporting component; the fixed supporting component is fixedly connected between one outer sealing head and one inner sealing head; the sliding supporting component comprises a first part and a second part which can slide oppositely along the axial direction; the first part is fixedly arranged on the other outer sealing head; the second part is fixedly arranged on the other inner sealing head; and the anti-rotating supporting component is used for preventing the inner shell from rotating relative to the outer shell and is arranged between the inner shell and the outer shell. The low-temperature storage-transport container provided by the utility model is excellent in heat-insulating property under the condition of meeting the strength requirement of the supporting structure.

The invention relates to a method for improving the flow regime of a high velocity flow of a sharp bend section in a free-flow tunnel, and belongs to engineering methods for improving the flow regime of the high velocity flow of the sharp bend section in the free-flow tunnel. The method comprises the steps of arranging a bend stilling pool inlet slope section on a straight-line section of the tunnel, and calculating the pool depth of a stilling pool through a derived bend stilling pool computing method; enabling the gradient of the bend stilling pool inlet slope to be the same as the injection angle of the flow, arranging stairs at the lower part of the inlet slope, and enabling the width of the bend stilling pool to be the same as the width of the tunnel body; arranging a bend stilling pool outlet slope section on a downstream straight-line section, arranging a stair-type slope at the stilling pool outlet slope section, and calculating the total length of the stilling pool, wherein the stair height is 1 / 2 of the pool depth of the stilling pool optimally. According to the method, the flow regime of the high velocity flow of the sharp bend section in the free-flow tunnel is improved, and the flow regime of the high velocity flows of various bends or the flow regime of middle and low velocity flows of sharp bend sections in the free-flow tunnel can be improved the same, so that the curve layout of the free-flow tunnel is more flexible, and the method has quite good practicability and application prospect.

The invention discloses an on-line monitoring system of fatigue damage to an electric transmission line conductor by breeze vibration. The on-line monitoring system comprises a conductor vibration line monitoring device and a meteorological environment observation station, wherein the conductor vibration line monitoring device and the meteorological environment observation station are connected with the line, data collected by the conductor vibration line monitoring device and meteorological environment data monitored by the meteorological environment observation station in real time are sent to a site line monitoring communication base station through a wireless sensor network, subjected to digital processing by the site line monitoring communication base station and transmitted to a database server of a local monitoring center through a data remote transmission system, and after a data processing and analyzing system of the database server of the monitoring center analyzes on-line monitoring information, on-line data are provided for clients through the on-line monitoring information of the Internet. The system tests parameters such as environment temperatures, wind velocities and dynamic deflection strain on the breeze vibration condition of conductors and ground wires, so that the requirements of safe operation of the line can be met, and the system can guide the anti-vibration design, the breeze vibration real-time monitoring and condition-based maintenance of the transmission line.

The invention relates to the technical field of electric vehicles, particularly discloses an electric vehicle charging station planning method based on a gravitation search algorithm. The electric vehicle charging station planning method based on the gravitation search algorithm comprises the steps of obtaining the related information of a planning area, wherein the related information comprises the planning area traffic network information, the planning area power distribution network informatization and the electric vehicle driving range information; estimating the range of the number of charging stations in the planned area; calculating the whole social cost of all charging stations in the planned area according to a gravitation search algorithm; comparing all the social costs of all the charging stations to obtain a planning scheme corresponding to the lowest cost. According to the electric vehicle charging station planning method based on the gravitational search algorithm, the charging station can be reasonably planned in a city with insufficient land, the requirement for safe operation of a power distribution network is met, and the rapid and convenient charging service canbe provided for vehicles.

The invention discloses a working vehicle for overhauling large span transmission lines, and the vehicle comprises a working cage, a main wheel frame horizontally mounted on the top of the working cage, and main pulleys movably mounted on the main wheel frame. The length of the main wheel frame is greater than that of the working cage. The main pulleys are mounted at two ends of the main wheel frame respectively. The working cage is also articulated with an auxiliary wheel frame. The two ends of the auxiliary wheel frame top are respectively provided with auxiliary pulleys, and the bottom is equipped with a handle. The handle can rotate the auxiliary wheel frame around the hinge shaft to change the cooperation between the main pulleys and the cable. The invention has the beneficial effects that the working cage is directly connected fixedly with the main wheel frame so as to reduce the shaking problem existing in the working process. And the main wheel frame has a longer size, which further enhances the stability in the direction of travel to avoid overturning. With the manually rotating auxiliary wheel frame, the contact between the main pulleys and the cable can be changed for barrier-free pass.

The invention provides a butterfly valve of an intermediate-pressure cylinder of a steam turbine. The butterfly valve is used for adjusting the flow of steam entering a low-pressure cylinder. The butterfly valve of the intermediate-pressure cylinder of the steam turbine is arranged on an outlet of the intermediate-pressure cylinder. The butterfly valve mainly comprises a valve body, a valve clack,a rotating shaft and electric execution mechanisms, and is mainly characterized in that two small valve clacks are mounted on the sealing face of the valve clack; gaps matched with the small valve clacks are formed at the positions, corresponding to the mounting positions of the small valve clacks, on the valve clack, and a rotating clearance is reserved; the two small valve clacks are symmetrically mounted at the positions, on the two sides of the rotating shaft of the valve body, and rotating shafts of the two small valve clacks are perpendicular to the rotating shaft and are guided out from the valve body; and the small valve clacks are used for slightly adjusting the steam flow. The butterfly valve can be used for adjusting the quantity of steam entering the low-pressure cylinder, therequirement of safe operating of the low-pressure cylinder can be met, extracted steam is utilized for heat supply to the largest degree, and the advantages of saving occupied land, saving investments and the like are achieved.

The invention discloses a water flow situation estimation method for an urban underground drainage pipe network. Various complex factors bring great difficulties to water flow situation estimation ofan urban underground drainage system. The method comprises the steps of firstly establishing a state space model of a water flow situation estimation system of the urban underground drainage pipe network, then constructing an estimator model of the water flow situation of the underground drainage pipe network, solving a water flow situation estimator of the urban underground drainage pipe networksystem, and obtaining a gain matrix of the estimator. According to the method, the underground drainage pipe network is described by using a state saturation complex network; meanwhile, a random timedelay effect in measurement data transmission is considered; through finite time mean square boundness and interference suppression performance analysis of a drainage pipe network water flow situationestimation system, a linear matrix inequality method is used for solving an estimator, timely and accurate estimation of the urban underground drainage pipe network water flow situation is achieved,and the actual safe operation requirement of an underground drainage system is met.

An elevator emergency lighting system comprises a control chip, a lift car lighting source fault detection circuit module, a mains supply power failure detection circuit and a battery voltage and battery charging detection circuit. The lift car lighting source fault detection circuit module at least comprises an LED lighting lamp constant-current drive circuit and a lift car illumination detectioncircuit, and the lift car illumination detection circuit is used for collecting the illumination in a lift car, converting the illumination into an illumination signal which can be recognized by thecontrol chip, and judging whether a standby LED light source is started by driving the LED illuminating lamp constant-current driving circuit or not according to the collected illumination intensity.Aiming at the fault of a lift car lighting source, the standby light source can still be automatically started through the system, and alarm processing is carried out. According to the present invention, the problem that the working time of emergency lighting cannot be verified during existing maintenance can be effectively solved, the fault type of an emergency power supply can be automatically identified, the overall emergency power supply replacement cost is greatly saved, the maintenance efficiency is improved, and the energy conservation and environmental protection are achieved.

The invention provides an erection method and an erection system of an overhead conductor considering creep quantity. The method comprises the steps of determining a creep characteristic of the conductor by different temperature conductor creep tests to obtain an equivalent time conductor hardening creep rate equation, respectively calculating creep quantity in an operation process of the conductor and creep quantity in an operation process of the conductor based on the creep equation to obtain creep quantity in a tensile pay-off process of the conductor and the creep quantity in the operationprocess of the conductor, and performing overhead line conductor erection based on the creep quantity in the tensile pay-off process of the conductor and the creep quantity in the operation process of the conductor. With the adoption of the method and the system, the overhead conductor can be well erected, and a safe operation requirement is met.

A method for controlling the smoke dust of lime kiln features that a dust collecting hood is used to capture smoke dust, a duster is then used for separating dust from fume, and the fume is finally exhausted. The frequency-variable control is applied to said duster, so its blower can be connected to DCS system for automatic regulation.

The invention discloses a method for improving the heat primary air temperature of a boiler with high moisture coal burned. Walls on the two sides of a rear smoke channel in the area of a low temperature reheater or a low temperature superheater of the boiler are respectively provided with an opening. A hot flue gas leading-out pipe is installed at the openings and is led to an inlet of a primary air pre-heater. Due to the fact that the pressure of an inlet and the pressure of an outlet of the hot flue gas leading-out pipe are different, the produced pressure difference drives hot flue gas to flow into the primary air pre-heater via the hot flue gas leading-out pipe from the area of the low temperature reheater or the low temperature superheater of the boiler, and the heat primary air temperature, the grinding inlet temperature and the grinding outlet temperature are improved remarkably. By means of the method, when the high moisture coal is applied to the power station boiler, the heat primary air temperature, the grinding inlet temperature and the grinding outlet temperature are improved, the requirement for safety operation of a coal mill can be met, meanwhile, a steam-water system of the boiler is normal, discharging of NOx is normal, the safety operation of the boiler is improved, the structure of a device is reasonable, investment is small, operation cost is low, and the method is suitable for the situation of China.

The invention provides a low-temperature storage-transport container which is provided with an inner shell and an outer shell, wherein the inner shell comprises an inner cylinder and two inner sealing heads located at two ends of the inner cylinder; the outer shell comprises an outer cylinder and two outer sealing heads located at two ends of the outer cylinder; a supporting structure is arranged between the inner shell and the outer shell; the supporting structure comprises a fixed supporting component, a sliding supporting component and an anti-rotating supporting component; the fixed supporting component is fixedly connected between one outer sealing head and one inner sealing head; the sliding supporting component comprises a first part and a second part which can slide oppositely along the axial direction; the first part is fixedly arranged on the other outer sealing head; the second part is fixedly arranged on the other inner sealing head; and the anti-rotating supporting component is used for preventing the inner shell from rotating relative to the outer shell and is arranged between the inner shell and the outer shell. The low-temperature storage-transport container provided by the utility model is excellent in heat-insulating property under the condition of meeting the strength requirement of the supporting structure.

The invention relates to a composite silicon-free defoamer for solving the problem of a foam layer in a coke tower. The technical scheme of the composite silicon-free defoamer is that the defoamer is prepared from the following materials in parts by weight: 20-50 parts of lauryl alcohol, 10-50 parts of polyoxyethylene polyoxypropylene glycerol ether, 5-20 parts of phenol derivative ethoxy propoxylate and 10-30 parts of isooctanol. The invention is free of silicon, nontoxic and harmless, excellent in heat resistance, and is not decomposed when heated to 500 DEG C and is suitable for defoaming at high temperature. The defoaming effect of silicon-free defoamer is equivalent to that of low-silicon defoamers, and better than high-silicon defoamers; and the defoamed ratio can reach 90% or more when the added quantity exceeds 50 gamma / g. The site trial shows that the product has excellent defoaming effect, and satisfies the requirements of safe operation of devices without any undesirable effects for the product quality and catalysts of a downstream unit through inspection.

The invention discloses a wide-load denitration system of heating flue gas by fuel gas supplementary combustion based on boiler deep peak regulation. The system comprises a fuel gas combustor, an economizer outlet horizontal flue and a denitration reactor, wherein the economizer outlet horizontal flue communicates with the denitration reactor, the gas burner is arranged on the horizontal section of the economizer outlet flue; and the gas burner internally comprises a gas burner primary air pipe and a gas burner secondary air pipe. The system is reasonable in design and simple in structure andcapable of flexibly and conveniently adjusting the temperature level of an inlet of the denitration reactor according to actual requirements, thus achieving the purposes of uniform distribution of a temperature field and a speed field behind a rectification grid of the denitration reactor, and has the characteristics of simple and convenient installation engineering and flexible arrangement of construction, so that the problem that the flue gas temperature for wide-load denitration is insufficient is fundamentally solved.

The invention discloses a three-phase split transformer insulation monitoring signal centralized sampling device. The device is composed of a centralized sleeve end screen current signal sampling unit, a centralized reference voltage signal sampling current, an intelligent sink control cabinet, three-phase split transformer sleeve current signals and three-phase split transformer sleeve voltage signals. The device has the advantages that online monitoring signals of sleeves of one transformer can be acquired in a centralized mode, the number of reference sensors is greatly reduced, and therefore measurement errors caused by the sensors are reduced; as is shown in detection, all technical indexes of the device meet the requirement for safe operation of the sleeves of the transformer; the configuration mode is simple, technicians can install, adjust, check and maintain the device conveniently, and the device is easy to apply and popularize.

The invention discloses a working vehicle for overhauling large span transmission lines, and the vehicle comprises a working cage, a main wheel frame horizontally mounted on the top of the working cage, and main pulleys movably mounted on the main wheel frame. The length of the main wheel frame is greater than that of the working cage. The main pulleys are mounted at two ends of the main wheel frame respectively. The working cage is also articulated with an auxiliary wheel frame. The two ends of the auxiliary wheel frame top are respectively provided with auxiliary pulleys, and the bottom is equipped with a handle. The handle can rotate the auxiliary wheel frame around the hinge shaft to change the cooperation between the main pulleys and the cable. The invention has the beneficial effects that the working cage is directly connected fixedly with the main wheel frame so as to reduce the shaking problem existing in the working process. And the main wheel frame has a longer size, which further enhances the stability in the direction of travel to avoid overturning. With the manually rotating auxiliary wheel frame, the contact between the main pulleys and the cable can be changed for barrier-free pass.

The invention provides a small-diameter tube inner wall detection probe assembly. The small-diameter tube inner wall detection probe assembly comprises a connecting tube, wherein one end of the connecting tube is connected with an automatic mechanical device through a flange, and the other end of the connecting tube is connected with a frame body through at least one coupling; the frame body is provided with a plurality of elastic pressing arms along the circumferential direction; the elastic pressing arms comprise connecting ends connected with the frame body and protruding ends protruding outwards along the radial direction of the frame body; the protruding ends of the elastic pressing arms can elastically displace towards the frame body under the action of external force; the elastic pressing arms are provided with probe mounting blocks for mounting detection probes; the probe mounting blocks are provided with protruding parts protruding to one side, away from the frame body, of each of the elastic pressing arms. The small-diameter tube inner wall detection probe assembly has the advantages of easiness in operation, good alignment, good probe coupling effect and the like, can effectively solve the problem of implementing lossless detection of a weld joint of a top cover instrument connecting tube of a reactor pressure vessel from interior and meets the requirement of safety operation of nuclear power.

The invention provides an industrial-grade general-purpose superconducting magnet system, which includes various functional components required for the operation of industrial superconducting magnets such as excitation / demagnetization, operation status monitoring, power grid fault magnetic field maintenance, quench detection and protection, and system integration High degree of automation, simple operation and maintenance, providing the function of temporarily suspending power supply for superconducting magnets to maintain the magnetic field of grid faults, providing dual quench protection functions such as active quench detection and passive quench protection for superconducting magnets, ensuring the safe operation of superconducting magnets , to meet the requirements for the safe operation of industrialized superconducting magnets. The highly integrated superconducting magnet power supply provides a favorable guarantee for the wide application of industrial superconducting magnets.

The invention discloses an oil-water separating sewage drain device for a transformer oil reservoir. The device is characterized by being composed of an oil reservoir water level determination device (1), an integrated control device (2) and a sewage drain device (3); the oil reservoir water level determination device (1) comprises a supporting rod substrate (1-10), an adjustable supporting rod (1-2), a zero potential contact chip (1-1), a sewage drain pump start contact chip (1-3), and a sewage drain pump stop contact chip (1-4); the integrated control device (2) comprises a control device body (2-13), a power switch (2-6), a liquid crystal display (2-5), and an F21-E1RX remote control device (2-14); the sewage drain device (3) comprises a sewage drain pump (3-1) and a voltage-sensitive relay CJXZ-2510 (3-2). According to the oil-water separating sewage drain device for the transformer oil reservoir, water in the transformer oil reservoir is monitored in real time and drained in time, therefore, the occurrence of an accident that the surrounding environment is damaged due to occurrence of overflow of transformer oil when the oil reservoir is waterlogged is prevented, and the labor intensity of operation and maintenance staff as well as operation and maintenance cost of the device are reduced.

The invention relates to a welding-type jockey pulley base of a stainless steel escalator step, belonging to the manufacturing field of escalators. The traditional structure is formed by casting integrally and has the problems of energy consumption, low percent of pass, high manufacturing cost and poor consistency. The welding-type jockey pulley base of the stainless steel escalator step comprises a jockey pulley shaft and a base body with a mounting hole, wherein the jockey pulley shaft and the base body are detachable members which are integrally welded and fixed; the jockey pulley shaft iscylindrical and comprises a jockey pulley mounting part on the upper part, a shaft lever in the middle part and a shaft base connection end on the lower part; the base body is a board stamping part comprising a triangular bottom face and a side wall which is perpendicular to the bottom face and provided with an opening at one end; a connection chamfer is arranged at the joint of the triangular bottom face and the side wall; and the vertex angle of the triangular bottom face is provided with a jockey pulley mounting hole in which the jockey pulley mounting part is inserted. The invention has the advantages of detachable production, convenient processing, low manufacturing cost, energy saving, light self weight and good strength, and is suitable for detachable-type stainless steel steps.

The invention relates to a method for improving the flow regime of a high velocity flow of a sharp bend section in a free-flow tunnel, and belongs to engineering methods for improving the flow regime of the high velocity flow of the sharp bend section in the free-flow tunnel. The method comprises the steps of arranging a bend stilling pool inlet slope section on a straight-line section of the tunnel, and calculating the pool depth of a stilling pool through a derived bend stilling pool computing method; enabling the gradient of the bend stilling pool inlet slope to be the same as the injection angle of the flow, arranging stairs at the lower part of the inlet slope, and enabling the width of the bend stilling pool to be the same as the width of the tunnel body; arranging a bend stilling pool outlet slope section on a downstream straight-line section, arranging a stair-type slope at the stilling pool outlet slope section, and calculating the total length of the stilling pool, wherein the stair height is 1 / 2 of the pool depth of the stilling pool optimally. According to the method, the flow regime of the high velocity flow of the sharp bend section in the free-flow tunnel is improved, and the flow regime of the high velocity flows of various bends or the flow regime of middle and low velocity flows of sharp bend sections in the free-flow tunnel can be improved the same, so that the curve layout of the free-flow tunnel is more flexible, and the method has quite good practicability and application prospect.