293results about How to "Improved ease of maintenance" patented technology

In a gas turbine power generation system having a gas turbine engine and a generator connected to the engine, maintenance ease is enhanced by forming the housing to have openable maintenance faces at two of its faces. Installation space is reduced and a compact configuration is achieved by providing a partition that divides the interior space of the housing into two regions into an upper bay and a lower bay, mounting the engine in the upper bay and mounting air intake duct in the lower bay at a location directly under the engine. Noise is reduced by using a partition to define two separate spaces (bays) and mounting the engine and the air intake duct in the upper and lower bays. Noise is also reduced by preventing engine rotation noise from escaping to the outside through the air intake duct. Moreover, it achieves a reduction in the amount of dedicated space required by constituting the air intake duct of a duct section having an air inlet at a plane coincident with that of the maintenance opening and a filter-housing section for removably housing an air filter, thereby enabling a common space to be utilized for that required in front of the maintenance opening and the air inlet.

Brackets received in an elongated base support both lens portions and internal light bar components. Lens portion longitudinal edges penetrate the outer portion of a gasket channel to engage a gasket member. Lens retainer straps sandwich gasket layers to seal the longitudinal butt ends of lens portions. The lens retainers also penetrate the gasket channel to engage the gasket member. The brackets provide multiple locations for mounting warning light units and related light bar components within the space defined between the base and the lens portions.

A gatherer device of wireless ad-hoc network meter reading system comprises a processor unit, a 485 bus interface unit, a wireless transmitting-receiving unit, and a power supply managing unit; wherein the processor unit is responsible for operation and control of the whole device, the 485 bus interface unit is used for connecting one or multiple electric meters, the wireless transmitting-receiving unit is responsible for interacting data and commands with a concentrator of the wireless ad-hoc network meter reading system, and the power supply managing unit supplies power for the whole device. An operation method of the gatherer device comprises that a command is received by the wireless transmitting-receiving unit and transmitted to the processor unit for processing, that the processor unit sends a request frame to an electric meter, that the processor unit receives a response frame from the electric meter and analyzes the response frame to acquire information of electricity consumption, and that finally the information of electricity consumption is returned to the concentrator through the wireless transmitting-receiving unit. The device and the method in the invention solve problems that the prior micropower wireless communication meter reading manners have much channel interferences, and are relatively low in security, relatively short in communication distances and not well in penetrating capabilities. Furthermore, the device has the advantages of low cost, high cost performance, good instantaneity, safety and reliability, and use and maintenance conveniences.

Disclosed herein is a device for housing a plurality of electrochemical cells, wherein the housing provides stability, temperature control and maximum packing density. The battery module housing comprises a first semi-enclosure and a second semi-enclosure, wherein the first and second semi-enclosure are aligned to form compartments there between. Each compartment is designed to accommodate at least one electrochemical cell, such as a cylindrical battery or a prismatic battery. Each semi-enclosure comprises an interior wall and an exterior wall. The interior and exterior wall align together to form a flow path between the walls through which coolant or any other thermal management medium may flow. The coolant enters the semi-enclosure through a coolant inlet, flows between the interior and exterior walls; then flows out of the semi-enclosure through a coolant outlet.

The invention provides a feature extraction method and a machine learning method and a device thereof. The feature extraction method comprises the steps that data records are acquired; feature extraction configuration items used for limiting how to extract preset features from the data records are acquired, wherein the feature extraction configuration items of each preset feature comprise the source field item and the processing method item, the source field items are used for limiting fields of the data records relevant to each preset feature into source fields, the processing method items are used for assigning quotation on data processing functions which are pre-programmed into executable codes, and the data processing functions are used for executing data processing for extracting all the preset features for field values of the source fields limited by the source field items; data processing is performed on the field values of the data records on the basis of the feature extraction configuration items to acquire feature values of the preset features. According to the feature extraction and machine learning technique, the programming flexibility and the code reusability are enhanced, and the technique is particularly suitable for big data application.

An intermediate transfer unit of an image forming apparatus is provided between a plurality of developer containers for containing developer and a plurality of developing devices. The intermediate transfer unit includes an intermediate transfer unit for secondarily transferring primarily transferred developed images from the plurality of image carriers onto a paper, an intermediate transfer unit driving mechanism for driving the intermediate transfer unit, and a housing for supporting the intermediate transfer unit driving mechanism. One end of the housing includes a plurality of developer inlet ports positionally corresponding to the developer supply ports of the developer containers respectively, a plurality of developer outlet ports positionally corresponding to the developer receiving ports of the developing devices respectively, and a plurality of developer supply paths connecting between the developer inlet ports and the developer outlet ports respectively.

The invention provides an interface parameter verification method and component. The method comprises the steps that a client defines parameters via a client end; an annotation analyzing module analyzes the parameters and sends analysis result data to a verification rule generating module; the verification rule generating module generates self-defined reference data type comparison rules according to the analysis result data; an annotation verification module searches for an attribute corresponding to each attribute of the comparison rules generated by the verification rule generating module in parameter objects and compares attribute values via the self-defined comparison rules; if no corresponding attribute is found or the corresponding attribute values are different, verification fails; otherwise, verification is successful. The interface parameter verification method can perform diversified implementation on frameworks based on multiple formats such as annotation, json, and xml, better support great dependency of parameters and support complex parameter types.

A system (10) for controlling the torque of an induction motor (12) utilizes a flux observer (14). The flux observer (14) receives stator current inputs (16, 18) and a rotor speed estimate (80) and then outputs a rotor flux estimate (20) that provides increased motor control stability at all speeds.

An engine oxygen concentration sensor mounting structure in which an oxygen concentration sensor is mounted in an exhaust pipe connected to an outlet of an exhaust manifold having a plurality of exhaust single pipes. When a straight line is drawn from a detection part of the oxygen concentration sensor positioned within the exhaust pipe so as to be parallel to a section of a centerline of the exhaust pipe closest to the detection part, the straight line passes outside the outlet of the exhaust manifold. This allows the exhaust gases discharged from the exhaust manifold to be sufficiently mixed within the curved exhaust pipe and differences in length of the plurality of the exhaust single pipes to be compensated for. Thus, accurate detection by the oxygen concentration sensor can be secured, even if the lengths of a plurality of exhaust single pipes of the exhaust manifold are nonuniform.

A modular raceway apparatus provides a pre-wired electrical sub-assembly for on-site installation in a building or installation a pre-fabricated building component. The raceway apparatus includes normal power and emergency power tracks. Each power track includes internal wiring connected to one or more connectors for plug-and-play interconnectivity with independent power supplies and other electrical component wiring members. Each raceway track includes multiple track members separated by gaps and a coupling.

The invention discloses a powerful and mechanical automatic-locking hydraulic cylinder, and belongs to the technical field of hydraulic cylinders. The two ends of a cylinder barrel are sealed by a cylinder cover and a cylinder bottom respectively. A guiding column of the cylinder cover is sleeved with a spring. The spring is sleeved with a brake block. The two ends of the spring abut against the cylinder cover and the brake block respectively. The outer circumferential face of the large diameter of the brake block is in sealing fit with the inner circumferential face of the cylinder cover. The end face of the end, with a large-diameter hole, of a locking block abuts against the end face of the step of an inner hole of the cylinder barrel, and the other end face of the locking block abuts against the end face, located at the portion of the cylinder barrel, of the cylinder cover. After a steel ball is put into a steel ball installation hole of a piston, the steel ball installation hole of the piston is matched with an inner hole of the cylinder barrel, and an annular groove of the piston corresponds to a rodless cavity oil port in the cylinder barrel. One end of a piston rod is fixed to a piston rod installation hole of the piston, and the other end of the piston rod penetrates through the cylinder bottom to be located outside the cylinder barrel. According to the powerful and mechanical automatic-locking hydraulic cylinder, the requirement for automatic locking after the piston rod is completely retracted can be met, and the locking state can be kept for a long time under the situation that pressure relief of a hydraulic system is completed or leakage happens until unlocking is actively achieved.

The invention discloses an Ethernet-based FPGA function online upgrading method. The method is applied to the function upgrading of a board card taking an FPGA as a main chip and having an Ethernet interface. A whole functional system comprises an upper computer part and a lower computer part, wherein the upper computer is mainly used for programming file reading, fragmentation, Ethernet packet assembling and sending; and the lower computer is mainly used for flash erasure and reading/writing, Ethernet packet analysis and feedback of an upgrading progress to the upper computer. By use of the method, the FPGA board card can be directly subjected to remote online upgrading through an Ethernet interface, so that unnecessary troubles and risk due to apparatus dismounting are avoided, the convenience and maintainability of device upgrading are improved, and the upgrading cost is reduced.

A transformer station automatic system performs functional combination and optimized design on secondary equipment (including a measuring instrument, a signal system, relay protection, an automatic device, and a telecontrol device) of a transformer station so as to achieve comprehensive automatic functions of the main devices of the transformer station, a power transmission line, and a power distribution line by using advanced computer technology, modern electronic technology and communication technology, and signal processing technology, wherein the comprehensive automatic functions includes automatic monitoring, measurement, automatic control, microcomputer protection, and communication with a control center.

The invention discloses switch equipment which comprises master control cards, switching cards and a line card, wherein the master control cards comprise control processors and PCIE (peripheral component interface express) switching chips; the switching cards comprise PCIE switching chips and switched network chips; the line card comprises a PCIE switching chip and a packet processing chip; in the master control cards, the PCIE switching chips are connected with the control processors by up PCIE interfaces, and connected with up PCIE interfaces of the PCIE switching chips of the line card and the switching cards by down PCIE interfaces and control buses; the PCIE switching chips of the line card and the switching cards are connected with a packet processing chip and a switched network chip of a board card by down PCIE interfaces respectively; PCIE networks form a centralized control plane; and the packet processing chip of the line card is connected with the switched network chips of the switching cards by an internal data bus to form a distributed data plane. With the adoption of the switch equipment, the realization complexity of software required to run on the switch equipment can be reduced, and the processing efficiency of the switch equipment is improved.

The invention discloses a power grid visualization method based on plugins. The method comprises the following steps that a power grid visualization system is started, and a primitive plugin and a visualization special effect plugin register to the power grid visualization system; primitive instances of the primitive plugin are initialized, and primitive files are generated; according to the primitive files, the primitive instances are constructed, and all the primitive instances register to a primitive list; after the primitive list registers, a visualization special effect thread and a primitive drawing thread are triggered; the primitive drawing thread draws primitives in the primitive list, and visualization special effects are overlapped by the visualization special effect thread according to the primitives sequentially arranged in the primitive list. A unified standard interface is adopted by the primitive plugin and the visualization special effect plugin, the plugins conforming to the standard interface can be dynamically loaded into the power grid visualization system, and therefore the expandability, openness and maintainability of the power grid visualization system are improved.

A hydraulic excavator includes an engine, a selective catalytic reduction apparatus, an outer cover, a first column member, a reducing agent tank, and a reducing agent pump. The selective catalytic reduction apparatus processes exhaust from the engine. The first column member supports the outer cover. The reducing agent tank retains a reducing agent. The reducing agent pump supplies the reducing agent from the reducing agent tank to the selective catalytic reduction apparatus. The reducing agent pump is attached to the first column member.

A transfer unit is movable between a first position adjacent to an image forming device and a second position for exposing the image forming device, in which when an door panel is opened. The transfer unit moves to the second position together with the door panel, and when the door panel is in a generally fully opened state, the transfer unit is movable to the first position independently of the door panel, thereby improving the ease of maintenance in the vicinity of the transfer unit.

A motor/generator system is provided in which a casing (111) of a motor/generator (MG) is connected to a casing (15) of a displacement type expander of a Rankine cycle system, and a rotor (117) of the motor/generator (MG) is supported on a shaft end of an output shaft (32) extending from the expander to the interior of the motor/generator casing (111). Providing communication between an internal space of the expander casing (15), where steam that has leaked from an expansion chamber of the expander is present, and an internal space of the motor/generator casing (111) via a through hole (15a) enables the motor/generator (MG), which reaches a high temperature due to generation of heat in a coil (124), to be cooled by leaked steam that has entered via the through hole (15a), and covering the low temperature expander casing (15) with the high temperature motor/generator casing (111) enables the escape of heat from the expander casing (15) to be minimized, thereby enhancing the efficiency of the expander. It is thus possible to cool effectively the motor/generator connected to the displacement type expander and at the same time minimize the escape of heat from the expander, thereby enhancing the efficiency.

An electronic device includes a device main frame portion, a display portion supported by the device main frame portion, a keyboard, and a casing on which the keyboard is disposed. The keyboard includes a plurality of operating keys, a placement base in which the plurality of operating keys are disposed, and a plurality of retaining portions disposed on at least portions of the placement base of the keyboard other than an outer circumferential portion. The keyboard is disposed on a casing. A plurality of connection retaining portions are provided on the casing, on which connection retaining portions the plurality of retaining portions of the placement base are retained, respectively.