46results about How to "Avoid wasting investment" patented technology

The invention discloses a power network load prediction method with demand side resources being taken into consideration. The method comprises the following steps: determining load prediction range of a substation; determining at least one kind of power terminal user connected to each feeder line of the substation within the load prediction range; determining at least one kind of demand side resource included in each type of power terminal user connected to each feeder line; calculating maximum load of each feeder line under the function of all demand side resources and within the predication time period; and carrying out accumulation on the calculated maximum loads of the feeder lines of the substation within the load prediction range, and then, multiply the accumulation value by load coincidence factor within the load prediction range to obtain a regional maximum load of the substation under the function of all demand side resources, within the predication time period and within the load prediction range. The invention also discloses a power network load prediction device with the demand side resources being taken into consideration.

The invention relates to a system and a method for realizing stable and high yield of dry quenching steam. The system comprises a dry quenching system, an air forced blowing system and a combustible gas supply distribution system, the air forced blowing system comprises a forced air blower and a main air blowing pipeline; the combustible gas supply and distribution system comprises a combustible gas main pipeline, a combustible gas branch pipeline and a combustible gas distributor; the influence of dry quenching system faults or coke oven overhaul and maintenance on the dry quenching steam yield can be effectively eliminated, and the dry quenching steam yield is stabilized and improved; in addition, the problem of equipment investment waste caused by low operation load of a single set of dry quenching equipment when a full dry quenching process is adopted can be solved, and meanwhile, damage possibly caused by long-time low-load operation of a dry quenching boiler is avoided.

The invention provides a method for implementing a mobile application public component library of a power enterprise. The method includes the first step of performing analysis by combination with business characteristics of mobile applications in the power industry based on mobile application requirements of the power industry, performing abstract analysis and planning on functional points, and abstracting mobile application public components; the second step of implementing the component library by utilizing the abstracted mobile application public components through a microservice technology, and supporting the operation of each mobile application in the power industry, wherein the component library includes map presentation and navigation, on-site positioning, face recognition, messagepush, and video live components; and the third step of establishing a component library management and maintenance system to evaluate the performance of the mobile application public components and ensure the quality of the mobile application public components. The method has the advantages that the public component planning problem of the mobile applications in the power enterprise is solved, theuniform public component library is formed to support each mobile application of the enterprise, and repeated development of mobile application functions is avoided.

The invention provides a method for determining the number of gas production wells in a gas storage tank considering the productivity change of a gas well. Through the intersection fitting of gas wellproductivity equation and wellbore tubular flow equation, the regression function of average formation pressure and reasonable daily gas production data of gas production well is obtained, as well asthe fitting function relationship between average formation pressure and cumulative gas production, determine the average formation pressure on day i of the gas storage, and then obtaining the reasonable gas production of the gas well of the gas storage depot on the i day, through peak shaving on the first day of gas storage and reasonable gas production on the first day of gas well, the number of gas production wells Ni needed in the first day of gas production stage is obtained, and the maximum number of gas production wells needed in the gas production stage of gas storage is selected as the number of gas production wells J needed in gas storage construction. As compared with that prior art, the invention determines the numb of gas production wells in the gas storage tank by considering the change of gas production capacity of the gas wells, which is more fit with the field reality, more accurate in calculation and avoids investment waste.

The invention belongs to the technical field of maleic anhydride production, and particularly relates to a novel production process for maleic anhydride through two-stage solvent absorption. The process comprises the following steps: firstly reaction production gas of the maleic anhydride enters a pre-absorption tower, after the reaction production gas and a solvent are tangentially mixed, a first-stage rich solvent is obtained at the bottom of the pre-absorption tower, a gas phase at the top of the pre-absorption tower enters an absorption tower and is absorbed by a solvent to obtain a second-stage rich solvent, the first-stage rich solvent is filtered through a filter, the filtered first-stage rich solvent and the second-stage rich solvent are mixed to enter a stripping tower, a gas phase component at the top of the stripping tower returns to the absorption tower, a material at the bottom of the stripping tower is sent to a desorption tower, desorbed crude maleic anhydride enters a refining unit from the top of the desorption tower, and a solvent at the bottom of the desorption tower enters the pre-absorption tower for recycling. The process provided by the invention can furtherreduce absorption and cooling load of the absorption tower system by the two-stage solvent recovery, can shift an impurity removal system process forwards to prevent the impurities from being accumulated in a subsequent system, and is suitable for large-scale continuous production of the maleic anhydride.

The invention discloses an automatic poured bag stacking and grouping machine comprising entrance conveying units, bag-pouring devices, bag outlet devices, exit conveying units and sensors. The entrance conveying units and the exit conveying units are mounted in a mutually perpendicular manner; the entrance conveying units higher than the exit conveying units are linearly connected with the rear end of a packing conveyor; the number of the bag-pouring devices is the same as the number of the bag outlet devices; each pair of the bag-pouring device and the bag outlet device opposite to each other is disposed above the side of the entrance conveying unit; and the sensors are respectively disposed on frames of the entrance conveying units and the exit conveying units. The automatic poured bag stacking and grouping machine can be connected with a plurality of packing conveyors to sort and group bagged products disorderly delivered thereto from a plurality of the packing conveyors, and the sorted and grouped bagged products are collected to a conveyor or distributed to over two conveyors. Consequently, production capacity of a stacker is improved; unnecessary waste of equipment investment and management resources is avoided; occupied space is minimized; and valuable productive land resources are saved.

The invention discloses a grid-based automatically-determining indoor antenna requirement and arrangement method. The method comprises the following steps: firstly, utilizing a grid modeling module to build antenna position grids and target user location grids; secondly, calculating the field strength and the coverage rate of a target coverage area; finally, automatically determining antenna quantity and antenna positions meeting coverage requirements of users eventually through an iterative loop. The method can automatically determine the minimal antenna quantity and the optimal antenna arrangement positions meeting the requirements of the construction of an indoor wireless network, so that the design efficiency and the quality of an engineering technical worker are improved, design labor is saved, and wasteful investment is avoided; the method is is practical and effective, and easy to realize and popularize.

The invention discloses a new energy access and grid extension optimization method considering wind power uncertainty, which comprises the steps of generating a large number of wind power output uncertainty scenes through random sampling of a Monte Carlo method in consideration of the uncertainty of wind power output, and perform scene reduction by using a synchronous back substitution method; andestablishing a mixed integer programming model, planning a large-scale wind power cluster access mode and regional grid extension in an overall planning manner by taking the minimum sum of the accessand extension total construction cost, the operation cost and the wind curtailment punishment cost as a target, and solving a globally optimal solution by adopting a commercial solver, thereby realizing overall economic optimization on the premise of consuming as much new energy as possible.

The invention provides a super-thousand bed comprehensive hospital area measuring and calculating method and device and terminal equipment. The method carries out the checking calculation of the areas of four functional departments and three auxiliary departments of a 1000-bed comprehensive hospital through the super-thousand bed comprehensive hospital area measuring and calculating method, and verifies the accuracy of the proposed measuring and calculating method. The sum of the areas of the seven departments is the main area of the comprehensive hospital. 2000 comprehensive hospitals and 3000 comprehensive hospitals are taken as examples to calculate the areas of the functional departments and the auxiliary departments to obtain the area values of the four functional departments and the three auxiliary departments of the 2000 comprehensive hospitals and the 3000 comprehensive hospitals. According to the measuring and calculating method, reasonable scales of seven departments of more than 1000 comprehensive hospitals can be measured and calculated more scientifically and accurately, so that the reasonable scale of the whole hospital is determined; compared with a measuring and calculating method, the measuring and calculating method has the advantages that the building area and the cost investment can be greatly saved when the measuring and calculating method is used for planning the scale indexes of the thousand-bed hospital, and the method plays a key role in spatial benefit and investment control of hospital design.

The invention provides an urban road intelligent traffic programming method based on an investment model. The urban road intelligent traffic programming method comprises the steps of: a, collecting current situation data of an intelligent system in a programming region, and determining the target of intelligent traffic system programming; and b, establishing the investment benefit model, programming the intelligent traffic by means of the investment benefit model. According to the invention, the current situation data of the intelligent system in the programming region is collected, the investment benefit model is established, and a most reasonable programming scheme is selected through the investment benefit model, so that the investment benefit ratio is maximized, the traffic problem in the programming region is effectively solved, the problems of investment waste and low efficiency are simultaneously avoided, and the intelligent traffic system programming is more perfect; in addition, the method provided by the invention is not limited to regional traffic and can also be applied to intelligent programming on a single intersection, a trunk and the like, the applicability is very wide, the integral harmony of the programming system is ensured, and the sustainable development of the intelligent traffic system construction is facilitated.

The invention relates to a detachable mobile platform and a mounting and demounting method thereof. The detachable mobile platform comprises a lifting ballasting system and an in-service functional system. The lifting ballasting system comprises lifting legs, lifting devices, ballast tanks, lifting beams and mechanical connection joints. The in-service functional system comprises a platform body, a basic disk type foundation and pile legs. The lifting ballasting system can be connected with or disconnected from the basic disk type foundation through the mechanical connection joints so that the lifting ballasting system can be connected with or disconnected from the in-service functional system. According to the detachable mobile platform, by separating and recycling the lifting ballasting system of the mobile platform, the problem of investment waste caused when the lifting ballasting system of the mobile platform is idle for a long term is solved; and the recycled lifting ballasting system can be used repeatedly, the lifting ballasting system can function for a long term, and accordingly the purpose of lowering the investment cost of the mobile platform is achieved.

The invention discloses a confidence capacity evaluation method and device based on vine copula and mixed offset normal distribution. The method comprises the following steps: S1, inputting all new energy power generation output historical data in a system; s2, establishing a marginal distribution model of all new energy outputs by utilizing the offset normal distribution hybrid model; s3, establishing a correlation structure model among all new energy outputs by utilizing a vine copula method; s4, generating a plurality of new energy output scenes with correlation by utilizing the marginal distribution model and the correlation structure model of the new energy output; and S5, according to the generated new energy output scene, calculating the confidence capacity of the to-be-evaluated new energy power generation resource by utilizing a secant method. According to the method, the new energy power generation output historical data can be used to establish an accurate new energy outputmodel, a new energy output scene fitting the reality is generated, and the confidence capacity of the new energy power generation resources can be accurately evaluated.

The invention discloses a method for rapidly determining a land occupation scale of a TBM (Tunnel Boring Machine) precast concrete duct piece factory and belongs to the technical field of civil engineering. The method comprises the following steps: firstly, comprehensively analyzing the production work efficiency of each procedure according to production data including actual work completion amount, work completion time and the like of each procedure of an existing precast concrete duct piece factory; combining requirements of safety production of each region of a duct piece prefabrication factory and related production experience and deducing a calculation formula for calculating the land occupation area of each procedure of the precast concrete duct piece factory; finally, rapidly determining the land occupation area of each procedure of the precast concrete duct piece factory according to basic parameters including a tunnel TBM tunneling construction period, an excavation section diameter and the like. According to the method provided by the invention, reference evidence is provided for rapidly determining the land occupation scale of the TMB precast concrete duct piece factory at a planning and design phase of engineering and effective guarantee is provided for follow-up construction; a condition that land occupation scale selection of the duct piece prefabrication factory is too small and the production efficiency of duct pieces is influenced can be avoided; investment wastes of factory building engineering, caused by the fact that the land occupation scale selection of the duct piece prefabrication factory is too large, are avoided.

The invention provides a method for distinguishing a suitable scale of hydraulic engineering through the improvement of a water environment based on a single curve knee point method. The method comprises the steps that two related variables are determined, that is, an index W of the water environment needing to be improved and a factor N influencing the index of the water environment are selected; corresponding values of the factor N influencing the index of the water environment under the condition of different hydraulic engineering scales are simulated and calculated; the single curve of the index W of the water environment needing to be improved and the factor N influencing the index of the water environment is drawn, and the range of a knee point is analyzed; the area of the knee point is selected. According to the method for distinguishing the suitable scale of the hydraulic engineering through the improvement of the water environment based on the single curve knee point method, the range of the hydraulic engineering is determined in the range of the area of the knee point, engineering benefits can be effectively achieved, and the problems that investment waste is caused by the too large hydraulic engineering scale, and due to a small engineering scale, the engineering effect is poor and the due engineering benefits cannot be fully achieved are solved.

The invention provides a skid-mounted unit for receiving and storing methanol, comprising a methanol storage tank disposed on a skid which is movable. A feed line of the methanol storage tank is provided with a quick connector and a first cut-off valve; a bottom outlet line of the methanol storage tank is connected with a methanol injection pump; the bottom outlet line is provided with a second cut-off valve, a filter and a methanol outlet cut-off valve; the bottom of the methanol storage tank is further provided with a drainage line which is provided with a third cut-off valve; the upper end of the methanol storage tank is connected with a nitrogen line and a pumped methanol return line. The skid-mounted unit is simple in structure; all devices and auxiliary lines are integrated to the skid, moving and mounting are facilitated, and the requirement for step development of a gas field is met; meanwhile, reasonable allocation can be made according to the production conditions of a gas well, equipment investment waste is avoided, cost is saved, supplementing can be performed regularly according to the production requirements of the gas well and changes in the liquid level, attendance is totally not required, running is automated, monitoring is remote, safety and reliability are achieved, and labor intensity is reduced.