32results about How to "Guaranteed failure" patented technology

The invention relates to a deviation driving device without a deviation gear for a wind driven generator. The invention relates to a deviation driving device. The invention solves the problems that the prior deviation driving device on the wind driven generator has more executive elements, poor reliability and low deviation accuracy, thereby bringing about the low power generation efficiency. A frequency conversion motor (21) is connected with a two-way constant delivery pump (23) through a coupling (22); a closed loop circuit (30) is formed between the two-way constant delivery pump (23) and a low speed great torque hydraulic motor (26); an oil replenishing valve assembly (24) is connected in parallel on the closed loop circuit (30) and is communicated with a closed oil can (20); a two-way hydraulic lock (25) is connected in series on the closed loop circuit (30); a manual stop valve (27) is communicated with high and low pressure cavities of the low speed great torque hydraulic motor (26) and the closed oil can (20); and motor rotor (26-1) on the low speed great torque hydraulic motor (26) is fixedly arranged on a deviation main shaft (40). The deviation driving device has the advantages of good reliability, simple structure, low cost, stepless deviation velocity regulation, and the like.

The invention discloses a vehicle-mounted Ethernet architecture compatible with a TSN and introducing an FC protocol, and the architecture comprises a first central control unit and a second central control unit, and the first central control unit and the second central control unit communicate with each other through the FC protocol; the first central control unit is connected with a first domaincontrol unit and a second domain control unit, and the first domain control unit and the second domain control unit are communicated through a TSN protocol; the second central control unit is connected with a third domain control unit and a fourth domain control unit, and the third domain control unit and the fourth domain control unit are communicated through a TSN protocol; the first domain control unit and the third domain control unit are communicated through a TSN protocol; and the second domain control unit and the fourth domain control unit are communicated through a TSN protocol.

The invention discloses an inducer for a containment spraying pump in the field of nuclear power equipment, which is composed of an inducer body and a shaft sleeve. The inducer body is composed of a hub and an outer edge arranged on the circumference of the hub, and the outer edge is defined by two spiral-shaped blades surrounding the circumference of the hub in spiral mode. Both the hub and the shaft sleeve are hollow, and the shaft sleeve is sleeved at the top end of the hub. The inducer for the containment spraying pump has the advantages that due to the fact the axial length of the hub is reduced, the difficulties for controlling the concentricity is reduced when the inducer is processed, the processing quality of the inducer is improved, cavitation corrosion resistance of each grade impeller above the inducer is improved, and stable operation of the containment spraying pump is ensured, so that safe operation of a nuclear island pressurized water reactor and effective handling of faults of the nuclear island pressurized water reactor are ensured.

The invention provides a protection device of a cooling pipeline for delivering high temperature gas pressure containers. The invention aims to provide an improvement scheme for a protection device ofa high temperature gas cooling pipeline. For example, in a down pipe chiller, the shortages of the prior art are overcome, in particular, in normal operation, the hot gas space in the pipeline and the gas side of the gas pipeline are separated, and in abnormal operation conditions, the balance of air pressure is guaranteed. In order to realize the technical scheme, the upper cooling water, whichflows back from the high temperature gas pipeline is connected to a cooling water outlet and enters a high temperature gas space from a lower part of the pipeline, and a buffer tank is arranged in anexternal space, which is between the reflux opening of the cooling water and the cooling water outlet and is higher than the cooling water reflux.

The invention relates to a method and a device for bringing a textile machine to a controlled standstill in the event of a failure of the power supply, and to a correspondingly equipped textile machine, the textile machine having at least two axes that are driven in synchronization by respective electric motors (MI-M5) connected to a common intermediate voltage circuit (1), and in which at least one electric motor acting as power generator can supply electric power to at least one other electric motor via the common DC bus (1), and in which the voltage (V) on the common DC bus is controlled byvarying at least two variables in such a way that the voltage follows a previously defined curve while the textile machine is being brought to a standstill.

The invention discloses a metadata management method in distributed object storage, and the method comprises the steps: S1, uniformly dividing a logic volume into a plurality of logic units, enablingeach logic unit to be an object, enabling each object to correspond to one piece of object metadata, and enabling the object metadata to be used for uniquely determining the content and position of the corresponding object, wherein each piece of object metadata forms a metadata object; S2, searching a target node of copy data of each object in a cluster in a consistent hash table by calculating hash values of contents of each object and each metadata object, and storing the objects and the metadata objects on the target node through a network; and S3, through the hash value of the GUID of thelogical volume, obtaining metadata information of all objects of the logical volume on each node of the cluster, and completing reconstruction of the logical volume Merkel tree. The problems of single-point failure, expansion of metadata management architecture and consistency of data and metadata in a distributed system are solved.

An automatic lights-out protecting system for an automobile comprises an automobile light state sensing circuit, an igniting switch signal circuit and an automatic lights-out control circuit, whereinthe automobile light state sensing circuit comprises a double-voltage comparator U1A, an adjustable resistor R1, and a light-sensitive diode L1 which is mounted at an automobile light; the igniting switch signal circuit comprises a nor gate U2A and a triode Q1; and the automatic lights-out control circuit comprises a relay K1 and a relay K2. According to the system, the automobile light state is monitored through the light-sensitive diode, an igniting switch signal is provided, and thus the connection of the triode can be controlled through a gate circuit; the automobile light is controlled and automatically turned off through the relays, and a simple logic control circuit formed through an electrical element can be adopted to achieve the purpose, and thus the problem that a driver forgetsto turn off the automobile light after flameout of the automobile and the electricity of a storage battery is completely consumed can be avoided; the system is simple in structure, good in effect, stable in performance, and low in cost; in addition, the igniting switch signal and a sensing signal of the light-sensitive diode realize interlocking, so that the normal use of the light of the automobile in normal running is not influenced.

The invention discloses an electrolytic accident chlorine negative pressure water seal device. The electrolytic accident chlorine negative pressure water seal device comprises a chlorine liquid seal tank (1) and a chlorine negative pressure water seal tank (2), wherein an air outlet (3) and a wind breaking opening (4) are formed in the upper part of the chlorine negative pressure water seal tank (2), the air outlet (3) communicates with the inside of the chlorine negative pressure water seal tank (2), and a water seal pipeline (6) is arranged in a water seal gap (5) arranged between the wind breaking opening (4) and the liquid surface of the chlorine negative pressure water seal tank (2); and the wind breaking opening (4) communicates with the inside of the chlorine negative pressure waterseal tank (2) through the water seal pipeline (6), an overflow opening (7) is formed in the side surface of the chlorine negative pressure water seal tank (2), the overflow opening (7) is divided into a branch I (8) and a branch II (10), wherein the branch I (8) communicates with the air outlet (3) through a water outlet pipe I (9), the branch II (10) communicates with the chlorine liquid seal tank (1) through a water outlet pipe II (11), and an outlet (12) is formed in the side surface of the chlorine liquid seal tank (1) and communicates with a chlorine water collecting tank (13).

The invention discloses a portable automatic lifting device controller based on a flexible rope and relates to the technical field of high-altitude transmission line maintenance. The controller comprises a processor, a power supply management module, a sensor module and a motor driving circuit, wherein the power supply management module comprises a power supply, a power supply selection circuit and a power supply protection circuit which are connected according to the current flow direction, the power supply selection circuit is used for selecting an effective power supply with the highest priority from a plurality of power supplies as the power supply, and the power supply protection circuit is used for protecting the processor when the circuit is overvoltage and overcurrent; wherein thesensor module is used for collecting the real-time position and posture of the automatic lifting device, the processor is used for receiving a user instruction and calculating to obtain a control quantity in combination with the real-time position and posture of the automatic lifting device, and the motor driving circuit is used for controlling the output motor according to the received control quantity. A control quantity instruction can be sent out according to the real-time position and posture of the automatic lifting device, and the safety of aloft work personnel is improved.

The invention discloses a double-in-and-out compartment type filter plate assembly and a corresponding double-in-and-out compartment type automatic filter press. The filter plate assembly comprises an upper single-lug feeding filter plate, a cloth clamping distributor, a trapezoidal double-lip sealing ring and a pull plate deviation rectifying spring washer, wherein the innovative points are as follows: a single-lug-hole two-way feeding mode is innovated, so that the area occupied by a feeding hole on a filter plate is reduced, and the feeding uniformity is improved; secondly, an orifice mounting type trapezoidal double-lip sealing ring is innovated, so that the area of the filter plate occupied by a sealing groove is reduced, and the high-pressure automatic sealing performance is improved; thirdly, the elastic rubber pads are additionally arranged to automatically correct the perpendicularity deviation of the filter plates, so that the peripheral filter frames are consistently sealed after the adjacent filter plates are pressed in parallel; and finally, the double-in-and-out characteristics of single-hole two-way feeding, double-hole one-way water or gas inlet and double-hole one-way undercurrent liquid outlet are achieved. According to the double-in-and-out compartment type automatic filter press, by using the filter plate assembly, various technical problems of low single-in-out efficiency, large occupied area of double feeding holes and sealing grooves, liquid leakage caused by the fact that the lower end of the filter plate is not pressed tightly due to self-inclination of the pull plate and the like are comprehensively solved, and therefore, the effects are significant.

The invention discloses a remote sensing product authenticity inspection method based on a micro-service architecture, each service module is used as an independent processing and computing unit, and the transverse or longitudinal expansion capability of each micro-service module is supported through the priority relationship between data obtained in each step in each micro-service module. According to the invention, systematic engineering of the remote sensing product authenticity inspection process is realized, and the inspection efficiency is improved; each micro-service has flexibility of transverse or longitudinal expansion, and each service can be upgraded and updated independently without depending on other services, so that developers can independently and quickly complete a service upgrading and issuing process, the isolation of system faults and resources is ensured, and the service upgrading and issuing efficiency is improved when the system is abnormal. The conditions such as memory leakage and non-closed database connection can only influence normal operation of a single micro-service and other services, so that stable operation of the authenticity inspection system is ensured, and the algorithm model supports distributed cluster operation capability.

The invention discloses a submersible pump testing device and a submersible pump testing method, and belongs to the technical field of water pump detection. The submersible pump testing device comprises an overflow pool, a lifting platform and a testing device for detecting the performance of a water pump, the testing device comprises a flow testing unit, a pressure testing unit, an electronic megger, an electrical performance testing unit, a noise testing unit and a vibration testing unit. The submersible pump testing method comprises the following steps: controlling a lifting platform to move to a target depth position in a first pool of an overflow pool; starting the water delivery pump and the test pump, and acquiring water pump performance data by the test device; and comparing the performance data with a standard parameter range, and if the performance data is not within the standard parameter range, judging that the submersible pump has a problem. According to the invention, the environment during the river test is simulated comprehensively, and the fault of the water pump can be found or the fault generated during the river test can be reproduced comprehensively and accurately.

The invention discloses a three-circuit, two-segment and two-tie medium-voltage overhead main power distribution network and a building method thereof. The power distribution network comprises a first primary power supply segment, a second primary power supply segment, a third primary power supply segment and a triangular power supply structure, wherein the first primary power supply segment is built by a first end power supply, the second primary power supply segment is built by a second end power supply, the third primary power supply segment is built by a third end power supply, the triangular power supply structure comprises a first secondary power supply segment, a second secondary power supply segment and a third secondary power supply segment which are connected in a head-to-tail way and are in a triangular shape, and a wiring structure is arranged on each of the first secondary power supply segment, the second secondary power supply segment and the third secondary power supply segment and comprises a segment switch in a normally closed state and a connection switch in a normally open state. The power distribution network adopts a two-circuit, two-segment and two-tie structure, the structure is relatively independent, is relatively high in load transfer capability, is simple and reasonable and is particularly applicable to rural areas and new city regions, and the actual requirements of transportation inspection, dispatching and marketing management are met.

The invention relates to the technical field of motors, and provides a motor and electronic equipment with the motor, and the motor comprises a housing, and a stator and a rotor which are disposed inthe housing. The stator comprises a stator core, a coil, a circuit board and a bearing retainer. The bearing retainer is fixed on the shell; the rotor comprises a shaft, a rotor frame and a rotor magnet. The bearing retainer is provided with a disc-shaped base part, a first cylindrical part and a second cylindrical part, wherein the first cylindrical part and the second cylindrical part extend from the center of the base part along the two sides in the axial direction. A first bearing is accommodated in the first cylindrical part; a stator iron core is fixed at the periphery of the second cylindrical part; and the end part of the second cylindrical part is aligned with the axial end surface of the stator iron core or protrudes out of the axial end part of the stator iron core. According tothe invention, most of the iron core can be ensured to contact with the matching part of the iron core of the bearing cavity part, and higher matching strength and flatness after the iron core is pressed in are ensured; and meanwhile, the gluing process is reduced, and the number of production processes and cost are reduced.

The invention provides a digital key transfer method and system, and the method comprises the steps that: an original owner initiates a digital key transfer request, and a cloud verifies the binding relation between a user who initiates the digital key transfer request and a to-be-transferred object; after verification succeeds, the binding relation between the original holder and the to-be-transferred object is released; all digital keys of the to-be-transferred object are deleted, and are notified the to-be-transferred object; a new binding key is issued to the original holder; the original holder informs the market intermediary of the to-be-transferred object of the new binding key; the intermediary uses the new binding key, and the cloud carries out verification; and after verification succeeds, a binding relationship between the new holder and the to-be-transferred object is established, and a new digital key of the to-be-transferred object is generated based on the new binding relationship. All digital keys of the to-be-transferred object can be ensured to be invalid, the ownership of the to-be-transferred object is completely transferred, and the original holder does not participate in the process of establishing the binding relationship between the new holder and the to-be-transferred object.