134results about How to "Retrofitting workload is small" patented technology

The invention relates to a converter-based low voltage ride through control system of a wind generating set, comprising a converter, a converter controller and a low voltage ride through main controller, wherein the converter and an auxiliary circuit breaker are connected in series to form a controlled branch circuit; a main circuit breaker between the wind generating set and a grid is connected in parallel with the controlled branch circuit; a direct current positive electrode bus bar and a direct current negative electrode bus bar are arranged between a rectifier and an inverter; a capacitor and an unloading resistor are connected between the direct current positive electrode bus bar and the direct current negative electrode bus bar; the unloading resistor and the capacitor are connected in parallel; the unloading resistor and a controlled valve are connected in series; the controlled valve is connected with the converter controller; a grid end is connected to an alternating current voltage detector; a direct current voltage detector is connected between the direct current positive electrode bus bar and the direct current negative electrode bus bar; the alternating current voltage detector and the direct current voltage detector are both connected with the low voltage ride through main controller; and the low voltage ride through main controller is connected with the converter controller, the main circuit breaker and the auxiliary circuit breaker. The invention is effectively adapted to occasions where the depth voltage dips and has favorable stability.

The invention discloses a method for code assigning, reading and data correlation of each pack of cigarettes. The method comprises the steps of producing small pack packages of cigarettes and carton packages of cigarettes; assigning codes when printing cigarette packages; conducting carton package with a carton packing machine; scanning unique bar codes on small pack packages and carton packages with a bar code reading device; and conducting exception handling during bar code reading. The method can be used for code assigning for each pack of cigarettes, and codes accurately correspond to bar codes. The method is characterized in that modification of a production line is low in work load, small in influence range and convenient to implement during reading of bar codes; a modification link of the production line is performed after quality inspection and rejection and facilitates accurate corresponding between carton codes and pack codes; the modification link of the production line is performed before shipping of cigarette cartons, the speed requirements for reading and detection of bar codes are greatly reduced, and then the cost of devices to be added is reduced.

The invention relates to a technology for preparing desulfurizing agent ammonia water in sintering flue gas desulfurization by coking residual ammonia water. The technology cokes the residual ammonia water with an ammonia vaporizing tower 8 and an ammonia dephlegmator 9 in a coking gas purifying system, i.e. 15-20% of ammonia water which is generated by condensing ammonia vapour is taken as source of the desulfurizing agent ammonia water in the sintering ammonia flue gas desulfurization, has the advantages of mature technology, stable operation, stability, small modification work load, less investment and less influence to coking production, provides stable ammonia source for the sintering ammonia flue gas desulfurization, reduces the process cost of waste ammonia and the running cost of sintering desulfurization during the coking production, recycles harmful substance ammonia in residual ammonia water, and accords with the national circular economy and the sustainable development strategy.

The invention discloses a thin-wall metal tube sample axial-direction tension and compression fatigue test fixture, comprising a pair of wedge-type clamp splices which have a concave surface and a convex surface respectively, and the test fixture matches the plate grip of a high-frequency fatigue test machine. The features include: the test fixture comprises a pair of wedge-type clamp splices which have a concave surface and a convex surface respectively; the contact surfaces between the wedge-type clamp splices and the thin tube wall are designed into a concave surface and a convex surface according to the specific radian of the sample; the thickness of the wedge-type clamp splice which has a convex surface is greater than the wedge-type clamp splice which has a concave surface; after the concave surface and the convex surface are clamped tight, the gravity of the cambered surface is right located at 1/2 of the integrated body of the two wedge-type clamp splices. If the fixture is adopted, the workload of fixture processing and transformation is reduced to a large extent. Thin-wall metal tube sample axial-direction tension and compression fatigue test can be conducted on an existing high-frequency fatigue testing machine.

The present invention discloses a double stage flame generator, comprising a housing, a first stage flame generator consisting of an ignition gun, an oil inlet tube and a carburetor, a second stage flame generator axially and concentrically sleeved inside a central ventilation chimney of the first stage flame generator. A vaporizer of the first stage flame generator is fixed inside an air distribution cylinder. The air distribution cylinder at the far end of the vaporizer is provided with a comparative long precombustion chamber. The axial center of the vaporizer of the first stage flame generator is provided with a guiding cylinder formed by circular holes. The guiding cylinder is used for placing the second stage flame generator, and is an air inlet path of part combustion promoting air. The second stage flame generator is positioned inside the guiding cylinder when the first stage flame generator is ignited, and stretches out to a coal powder combustor spout of the housing after the ignition. The flame generator has large power adjusting ratio, and is capable of realizing cooling furnace curve ignition. The temperature of flame is higher, and the rigidity of the flame is larger. The flame does not vie with the coal powder for air. The flame generator has further advantages of 100 percent gasification combustion, high combustion efficiency, low working pressure and large safety factor.

The invention discloses an elastic scalability method and system, and belongs to the field of communications. The method comprises the following steps: acquiring monitoring data of an application supported by a scalability pool, wherein the scalability pool comprises at least one scalability group, each scalability group comprises at least one pre-created virtual machine, and each virtual machine is pre-deployed with an application; performing scalability decision on each scalability group according to the monitoring data; when deciding to expand the virtual machine in the target scalability group, selecting the first virtual machine from the virtual machines in dormancy state included by the target scalability group, and awakening the first virtual machine. Through the adoption of the method disclosed by the invention, the problem that the elastic scalability scheme provided by the prior art cannot meet the fast expansion demand; through the pre-creating of the virtual machine and the pre-deploying of the application, the virtual machine in the dormancy state is awakened, namely, the fast expansion of the application node is realized, the technical effects of improving the scalability speed and meeting the fast scalability demand are achieved.

This invention relates to a remote simultaneous transferring process overtime self-adaptive method, which comprises the CPU transferring process and its executing process. The CPU transferring process comprises the following steps: first executing transferred task; sending the message to the CPU to get signals and block the transferred task; then judging whether it receives the feedback data package within the overtime; the transferred CPU receives the message and executing the transferred function and sends the wait message to the CPU with time interval less than the overtime; sending the transferred result to the CPU after the executive function is over.

Disclosed in the invention is a tail rotor stand comprising a rack, a horizontal motor, a reducer, a first driving shaft assembly, a torque scale, a second driving shaft assembly, a single-component lift balance, a rotating translation conversion device, and an actuator cylinder set. The rack includes a support platform, a driving shaft support part, and an accommodation space. The reducer is arranged in the accommodation space and the input terminal of the reducer is connected with the output terminal of the horizontal motor. The first driving shaft assembly is arranged inside the driving shaft support part and can rotate relative to the driving shaft support part; and one end of the driving shaft assembly is connected with the output terminal of the reducer. The torque scale is connected with the other end of the first driving shaft assembly. One end of the second driving shaft assembly is in transmission connection with the torque scale and the other end is in transmission connection with a tail rotor. The single-component lift balance is arranged on the support platform; a floating plate of the single-component lift balance is connected with the second driving shaft assembly. The rotating translation conversion device is in transmission connection with the second driving shaft assembly. A cylinder body of the actuator cylinder set is arranged on the floating plate and a piston rod is connected with the rotating translation conversion device.

The invention discloses a walking oilseed cutting and drying machine which comprises a header rack, a horizontal cutting device, a vertical cutting device, a main shaft, a middle transition shaft, a first belt, a crank connecting rod, oilseed rape separating plates, a power mechanism and the like, wherein one end of the crank connecting rod is arranged on a crank base. An existing walking tractor commonly used in China is adopted for the power mechanism, the using range is wide, the amount of modification work performed on the walking tractor is small, modification is convenient, only cutting and walking actions are finished by the power mechanism, and power of an active guiding laying device is saved. The round hole hollowed plates are adopted for the designed guiding laying device, so that the operation visual field is guaranteed, and under the action of forwarding speed and oilseed rape stalk inertia, oilseed rape stalks are guided to the left side and the right side to be laid. The designed oilseed rape separating plates are located in the middle of the front of a machine set, active oilseed rape separating is adopted for distinguishing an oilseed rape harvesting area into a left area to be cut and a right area to be cut, and after cutting, the oilseed rape stalks are laid on the two sides under the action of the guiding laying device.

The invention discloses a multi-brand cipher machine heterogeneous resource pool multiplexing technology. Through the multiplexing technology, data compatibility and data exchange among cipher machines of different brands are realized, and the password usage range is expanded. For a financial transaction industry, the usage ways of cipher machines in the financial transaction industry are changed greatly, the use of the cipher machines is not limited by a certain existing brand anymore, and the current situation of dependence on a cipher machine of a certain brand is changed. After adoption of the technology disclosed by the invention, a new-brand cipher machine can be introduced into an original transaction system in the financial transaction industry, and system modification workload due to introduction of the new-brand cipher machine is lowered. Moreover, after the technology is adopted in relevant departments of the financial transaction industry, existing cipher machines of different brands can be integrated to form a cipher machine assembly to be supplied to all service systems in a unified way for calling, so that the processing efficiency of the service systems is increased under the situation of not purchasing any new cipher machine; cipher machine resources are utilized to the maximum extent; and the purchasing cost of the cipher machines is lowered.

The invention discloses a flexible sealing structure of a rotary air pre-heater. The flexible sealing structure is a contact type sealing device and comprises a sealing sliding block, a regulation supporting seat and a supporting fixing plate; the sealing sliding block is rotatablely connected with the supporting fixing plate; the supporting fixing plate is relatively arranged on a radial baffle plate of the air pre-heater fixedly; the regulation supporting seat is fixedly connected with the supporting fixing plate; a compression spring is arranged between the regulation supporting seat and the sealing sliding block; the sealing sliding block is in contact with a fan-shaped plate or an axial arc-shaped plate of the air pre-heater; a reset regulation device is arranged between the sealing sliding block and the regulation supporting seat; two ends of the reset regulation device are respectively connected with the sealing sliding block and the regulation supporting seat; and the reset regulation device is used for regulating the maximal resilience modulus of the compression spring positioned between the sealing sliding block and the regulation supporting seat. By using the flexible sealing structure, through regulating the reset regulation device, the regulation of sealing acting force between a moving component and a stationary component in the air pre-heater is realized; the wear of a sealing surface is decreased; and the service life of a quick-wear part is prolonged.

The invention provides an automatic door security protection intelligent monitoring method and a gas detection method. The intelligent monitoring system comprises a central processing unit, a power supply circuit, a serial communication module, an alcohol detection circuit, a metal coil oscillation circuit, a signal collecting and conditioning circuit, an LCD screen and a sound-light alarm module, wherein the metal coil oscillation circuit is connected with the central processing unit through the signal collecting and conditioning circuit, the central processing unit is respectively connected with the serial communication module, the alcohol detection circuit, the LCD screen and the sound-light alarm module, the power supply circuit is connected with the central processing unit and used for providing power for the central processing unit, and the central processing unit is connected with a PC (Personal Computer) through the serial communication module. According to the invention, detection is performed on three types of dangerous articles such as metal, alcohol and inflammable materials by taking a single-chip microcomputer as a core, and whether a visitor has certain dangerousness or not is judged intelligently according to a sensor detection value through the single-chip microcomputer.

The invention relates to a built-in flue smoke amount distributing control system of an economizer. The built-in flue smoke amount distributing control system comprises an inlet header, an outlet header and a plurality of S-shaped pipe coils arranged between the inlet header and the outlet header. The built-in flue smoke amount distributing control system is characterized by further comprising at least one partition plate and a smoke temperature adjusting baffle, one end of the partition plate penetrates through the outlet header and then enters a flue between the inlet header and the outlet header to divide the flue, and the smoke temperature adjusting baffle is arranged on the partition plate to block part of the divided flue. Compared with the prior art, the built-in flue smoke amount distributing control system has the advantages of being simple in structure, obvious in effect, flexible in adjustment, capable of achieving stepless adjustment and control and the like.

The invention discloses a micro-service authentication method and system. The system comprises an authentication center and a gateway. The method comprises the following steps: when an authenticationcenter receives a request, the authentication center generates a token according to login user information, adds the token to the request and forwards the request to a gateway; the gateway analyzes the token in the request by extracting the token in the request, reserves the token in the request after analyzing that the user information is valid, and forwards the request to a first micro-service,and the first micro-service responds to the request. According to the method disclosed in the invention, the token containing the user information is generated by using the certificate center and sentto the request; the request is forwarded to the gateway; all micro-service requests are intercepted by the gateway for user authentication analysis, only the request passing authentication can be forwarded normally, that the micro-service can be subjected to safe identity authentication is ensured, and interaction between the server and the client is reduced; the method has the advantages that when a new micro-service is accessed, the later modification workload is small, and network resource consumption is low.

The invention discloses a distribution network flexible interconnection coordination control method and device. The method comprises the steps of AC port operation control of a flexible interconnection device, AC-DC power grid multi-element source load control and AC-DC co-construction area coordination control. The AC port operation control of the flexible interconnection device comprises AC port steady state control and AC power grid fault load conversion control, and the AC power grid fault load conversion control is preferentially carried out; the multi-element source load control of the alternating current and direct current power grid is that partition autonomous control is carried out on an alternating current source load and a direct current source load under the condition that a novel direct current load is accessed to a direct current side, and the novel direct current load comprises a photovoltaic pile, an energy storage pile or a charging pile; the AC/DC co-construction area coordination control comprises DC voltage coordination control and converter capacity coordination control. According to the method, the distribution network flexible interconnection system new energy on-site consumption control capability, the source network load storage flexible regulation and control capability and the power distribution network efficient and safe operation capability are improved.

The invention provides a statistical method for the vibration region crossing number and the time of a hydro-generator on the daily basis. The method comprises the steps of 1) reading the configuration information and the second-level output historical data of a power grid model/unit vibration region through the real-time database platform interface of an energy management system; 2) according to the output historical data of the unit and the parameters of different vibration regions, analyzing the time, the direction and the duration of each vibration region crossing process; 3) conducting the statistics on the vibration region crossing number, the maximal vibration region time and the vibration region total time for each day; 4) calculating time periods based on the daily basis. According to the technical scheme of the invention, the statistics on the time, the direction and the duration of the vibration region crossing process of the hydro-generator all over the power grid can be realized, and the statistics on the vibration region crossing number, the maximal vibration region remaining time and the vibration region total time for each day is conducted. Based on the above algorithm, data are grouped on the unit basis, and are segmented and analyzed on the daily basis. Therefore, the processing requirements of the large data volume and the computational efficiency are fully considered. The method is simple and practical, and no dedicated collection device is required. Therefore, the method can be directly developed and applied to an EMS system.

The invention discloses a flue gas desulfurization absorber interactive spray system which is parallelly arranged in an absorber body in a layered manner. Each layer comprises a plurality of spray main pipes, spray nozzles, supporting steel beams and supports, the spray main pipes are sequentially parallelly arranged in opposite directions, the diameter of each spray main pipe is reduced link by link in a stepped manner from a near end to a far end, the inside of the pipes is uniform in flow speed, the spray nozzles are the same in flow, the spray main pipes penetrate a spigot joint welded on the absorber body, are connected with external circulating slurry pipes in a flanged manner and extend into the absorber body, small ends of the spray main pipes are placed on the supports, the middles of the spray main pipes are fixed onto the supporting steel beams through hoops, and the external circulating slurry pipes on each layer are connected with the main pipes perpendicular to the external circulating slurry pipes. The system has the advantages that the liquid-gas ratio of a desulfurization system is further increased, the system is convenient to arrange, manufacture is correspondingly simplified, and mounting time is also shortened. The arrangement space of the spray main pipes is saved, the height of an absorber is reduced, the lift of a circulating slurry pump is reduced, and desulfurization electricity consumption is reduced.

The invention relates to a method, for positioning power system power oscillation disturbance source in real time, based on SCADA (supervisory control and data acquisition) data. The method includes the steps of firstly, calling a time sequence database interface of an EMS (enhanced message system) to obtain an active value of power equipment; secondly, calling an oscillation feature iterative function, inputting new data on the basis of a previous state, calculating feature quantity of active oscillating of one grid equipment, comparing with a preset fixed value, and returning equipment state; and thirdly, positioning a disturbance source in real time, and positioning the equipment, which is triggered to oscillate firstly, as the disturbance source. By the method, data accuracy is improved, practicality level is improved, investment is saved greatly, and convenience and practicality are achieved.

The invention discloses a rotational structure of a boiler rotary air heater, wherein the air heater is generally divided into a plurality of groups of heat-transfer surfaces, each group of the heat-transfer surfaces can rotate independently and respectively, or only one group can rotate independently and other groups of the heat-transfer surfaces remain stationary all the same. The rotational structure comprises headers of the heat-transfer surfaces of the air heater, a front rotating shaft, a back rotating shaft and corresponding front bearing and back bearing, an actuating mechanism and the like. The front and the back rotating shaft are round tubes and are hollow, and one side of each rotating shaft is welded on the headers at two sides of the heat-transfer surfaces of the air heater respectively, while the other side is connected with the bearings and in interference fit with the bearings. The other side of the connecting bearing of the back rotating shaft is selected to be connected with the driving actuating mechanism through a solid shaft. The rotational structure ensures that the air heater rotates freely and is convenient to mount, can rotate the air heater in the running process of a machine set, is applicable to air heaters arranged in any modes (a horizontal arrangement mode, a vertical arrangement mode or other arrangement modes), and has better universality.

The invention relates to a high-robustness communication network for dual backup of an optical network and a wireless Mesh network. The high-robustness communication network comprises a dual backup transmission node arranged on a network layer of an OSI seven-layer model. The dual backup transmission node comprises a connection processing module which is used for being connected with an optical fiber and capable of forming the optical network. The connection processing module can be matched with a wireless Mesh network module in the dual backup transmission node to form an optical and wireless Mesh dual backup network. After the optical fiber is connected with the connection processing module, the optical network and the wireless Mesh network are formed simultaneously through the dual backup transmission node. When an interface monitoring module in the dual backup transmission node monitors that the optical network is normal, the connection processing module selects the optical network for data transmission, and otherwise the connection processing module selects the wireless Mesh network for data transmission. According to the high-robustness communication network, backup support can be provided for the optical network through the wireless Mesh network, the robustness of the whole network is improved to a great extent, and the network is wide in application range, safe and reliable.

The invention discloses a process and a device for realizing up-to-standard emission of boiler flue gas with a coupling technology. The device comprises an electrostatic synergetic dust remover, wherein the electrostatic synergetic dust remover is connected with an induced draft fan through a flue I, the other end of the induced draft fan is connected with an inlet of a desulfurizing tower through a flue II, and an outlet of the desulfurizing tower is connected with a chimney through a flue III; a mixer is arranged in the flue I; an ozone generator is connected with the mixer through an ozone delivery pipeline; a process water tank is connected with the electrostatic synergetic dust remover and the ozone generator respectively through water delivery pipelines. According to the process and the device, measures such as partial transformation of an existing electrostatic dust remover, addition of the ozone generator and the like are taken, coupling of three technologies of electrostatic synergetic dust removal, ozonation and wet absorption is realized successfully, and units such as an oxidation reactor, an absorption tower and the like are not required to be newly built for technology implementation, so that the process and the device have the advantages of low investment, small occupied area, low transformation workload, low operation cost and the like.