31results about How to "Reduce inspection and maintenance costs" patented technology

A Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system comprises a deflection / subsidence physical quantity conversion portion based on the principle of communicating vessels, a physical parameter sensing portion based on the Brillouin distributed optical fiber sensing technology and a deflection / subsidence evaluation system, and is specifically characterized in that the liquid level in an oil tank is kept at a certain height, oil is delivered to sensing vessels fixed on a measured structure through an oil pressure header pipe and branch pipes, an optical fiber is wound through pulleys and fixed on a piston and a bottom plate in each vessel, and when the deflection / subsidence of a measured point is increased, the strain of each corresponding optical fiber is increased, an internal free optical fiber section is just influenced by the temperature and can implement temperature compensation for the other optical fibers, the Brillouin distributed optical fiber sensing technology is used for strain and temperature sensing, and the evaluation system evaluates deflection / subsidence finally. The Brillouin distributed optical fiber sensing based structural deflection and subsidence monitoring system is flexible to arrange and capable of achieving a great quantity of series connection and suitable for long-term health monitoring of large infrastructures.

The invention discloses a static wireless signal quality pre-warning device, system and method. The system comprises a train, an antenna connected with vehicle-mounted wireless equipment of the train, a wireless access point and the signal quality pre-warning device. The signal quality pre-warning device carries out wireless communication with the antenna of the vehicle-mounted wireless equipment through the wireless access point and has access to a signal quality pre-warning program. When the signal quality pre-warning device detects that the quality of a wireless signal from the vehicle-mounted wireless equipment of the train is normal, the signal quality pre-warning device is shut off, and relative equipment is needless to be detected and maintained. When the device detects that the quality of the signal from the vehicle-mounted wireless equipment of the train is abnormal, the signal quality pre-warning device is started, and relative equipment which is detected to be abnormal is detected and maintained. The static wireless signal quality pre-warning device, system and method solve the technical problems that in the prior art, detection and maintenance of a wireless transmission device of a vehicle are in a periodical maintenance and detection stage, state maintenance cannot be achieved, and particularly, quality of signals cannot be detected and maintained.

The invention discloses a motor detection method and device. The motor is used to drive a circuit breaker, and the motor shaft is connected to the circuit breaker through a brake disc. The method includes: detecting the actual motion curve of the motor shaft, wherein the motion curve is the rotation angle of the motor shaft Time-varying curve; compare the actual motion curve with the preset motion curve; if the angle difference between the actual motion curve and the preset motion curve at any moment is less than the preset angle value corresponding to the moment, it is determined that the motor is working The state is normal; if the angle difference between the actual motion curve and the preset motion curve at any moment is greater than or equal to the preset angle value corresponding to that moment, it is determined that the motor is in an abnormal working state. By obtaining the actual motion curve of the motor shaft and comparing it with the preset motion curve, it is judged whether the motor is in normal working condition, which improves the intelligence level and reliability of the high-voltage switchgear, and realizes the transition from "regular maintenance" to "condition maintenance". Save maintenance cost.

The invention relates to a mechanical sealing device of a high-pressure water pump. The mechanical sealing device of the high-pressure water pump comprises a movable sealing ring and a static sealing ring, wherein the movable sealing ring is mounted on a rotating shaft, and the static sealing ring is mounted in a mechanical sealing seat; a groove is formed in the outer ring of the movable sealing ring; a limiting block is arranged in the groove; a spring is arranged on the outer ring of the limiting block in a sleeving mode; the movable sealing ring is pressed towards the static sealing ring through the spring; and a circular arc groove is additionally arranged on the outer ring of the static sealing ring. By adopting the structural design, the inspection and maintenance cost is greatly reduced, the operation stability of equipment is improved, and as the circular arc groove is additionally formed in the outer ring of the mechanical seal static ring, the liquid film thickness of the two end faces is increased, and the lubricating effect is improved.

A Brillouin distributed optical fiber sensing based structural joint monitoring device is characterized by comprising steel plate bases (9), a linear steel sheet (5) and an L-shaped steel sheet (8) are mounted on each steel plate base (9), a pulley (6) is mounted at each of a suspension arm end of each linear steel sheet (5) and a corner end of each L-shaped steel sheet (8), an optical fiber (1) for stretching detection is wound on the two corresponding pulleys (6) at the suspension arm ends of the linear steel sheets (5) on two sides of a structural joint, an optical fiber (2) for contracting detection is wound on the two corresponding pulleys (6) at the corner ends of the L-shaped steel sheets (8) on two sides of the structural joint, an optical fiber (3) for temperature compensation detection is connected between the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection, and each of the optical fiber (1) for stretching detection and the optical fiber (2) for contracting detection is connected with a Brillouin distributed optical fiber demodulating system through a respective connecting optical fiber (4). The Brillouin distributed optical fiber sensing based structural joint monitoring device is capable of monitoring the stretching quantity and the closing quantity of the structural joint, achieves temperature self compensation and effectively overcomes the shortcomings when the optical fibers are simply laid.

The application provides a method and device for slowing down the corrosion of the top reflux system of a condensate stripper, which relates to the technical fields of coal chemical industry and petroleum processing. The device includes a condensate stripping tower and a spray tower, and the non-condensable gas output from the top of the condensate stripping tower is cooled by using the spray tower. The above-mentioned device is simple in structure and easy to operate. Using the spray tower as the non-condensable gas cooling system to replace the traditional tower top condenser can effectively solve or slow down the local serious ammonia substances in the tower top reflux system in the existing condensate stripping process. Corrosion Corrosion problems, reduce inspection and maintenance costs Avoid or reduce unplanned shutdowns caused by leakage problems, reduce maintenance costs, and ensure the safe, stable, and long-term operation of the entire stripping system.

A satellite signal repeater is used for amplifying satellite signals from a satellite navigation system and outputting the satellite signals to a satellite signal receiver. The satellite signal repeater comprises a filter module and an amplifying module, wherein the filter module is used for filtering signals received through a satellite signal input port so as to filter other wireless signals except the satellite signals; the amplifying module is used for carrying out power amplification on the satellite signals of the filter module and outputting the satellite signals undergoing power amplification to the satellite signal receiver through a satellite signal output port. The filter module can be detachably connected between the satellite signal input port and the input end of the amplifying module. Due to the fact that the filter module is designed to be replaceable, the application range of the satellite signal repeater is wide and detection cost and maintenance cost are low.

The invention discloses a multi-well type two-phase flow metering skid, which belongs to the field of fluid metering and includes a first production pipeline, a second production pipeline and several wellhead connecting pipelines, each of which is passed through the first wellhead connecting pipeline. The second production connection pipeline communicates with the second production pipeline, each of the second production connection pipelines is provided with a second control valve, and each of the second production connection pipelines is respectively provided with a first transition pipeline and a The second transition pipeline, the first transition pipeline and the second transition pipeline are respectively provided with a first control valve and a third control valve, and the first transition pipeline and the second transition pipeline are provided with a first production A connecting pipeline, a two-phase flowmeter is arranged on the first production connecting pipeline between the connection between the first transition pipeline and the second transition pipeline and the first production connecting pipeline, and the first production connecting pipeline A fourth control valve is arranged on the pipeline. The invention can measure the two-phase flow flow, and can perform online self-calibration for each two-phase flow meter.

The invention provides a high-safety intelligent shared charging method of a mobile phone. The method comprises the following steps: a power driving device is started; the shielding transmission mechanism receives the power of the power driving device and transmits the power to a shielding door member; the shielding door member is switched from a blocking state to an open state; the shielding transmission mechanism receives the power of the power driving device and transmits the power to the shielding door member. The lifting control mechanism receives the power of the power drive device and uses the power to release the locking restraint on the charging plug member, The charging plug member is automatically switched from the retracted state to the extended state, and at this time, the shielding door member is switched to the blocking state, the charging output end of the charging plug member is passed out of the box body by the shielding door member, and the user manually charges thecharging output end of the charging plug member and the charging socket of the mobile phone. When the charging of the mobile phone is finished, the shield door member is switched to the open state, and then to the blocking state. In this process, the lifting control mechanism receives the power of the power drive device and uses the power to drive the charging plug member to switch to the retracted state for resetting.

The invention discloses an engine speed control system and an engineering machine. The engine speed control system comprises an acquisition conversion unit, a calibration unit and a calculation transmitting unit. The acquisition conversion unit is used for acquiring signals about statuses of an accelerator pedal and converting the signals into digital signals, the signal about the status that the accelerator is not stepped corresponds to a first digital signal, and the signal about the status that the accelerator pedal is full stepped corresponds to a second digital signal. The calibration unit is used for subjecting the digital signals obtained by the acquisition conversion unit to data acquisition with engine speed, the first digital signal corresponds to idle speed, and the second digital signal corresponds to maximum adjustable speed. The calculation transmitting unit is used for calculating the corresponding engine control speed according to the current digital signal obtained by the acquisition conversion unit and transmitting the engine control speed to an engine electro-control unit. By the use of the engine speed control system, speed fluctuation due to the fact that analog signals are interfered can be avoided, precision in controlling engine speed can be improved and cost in check and maintenance of the accelerator pedal can be reduced.

The invention discloses a monitoring system and method for mechanical components inside a fan machine room. Wherein, the monitoring system includes: a first acquisition module, arranged inside the fan cabin, for collecting the first audio signal at the mechanical parts inside the fan cabin; a second acquisition module, arranged inside the fan cabin, for Collecting a second audio signal inside the fan cabin; an acquisition module, configured to subtract the second audio signal from the first audio signal to obtain a target audio signal; a diagnostic module, configured to judge the target audio signal based on the target audio signal Check if any mechanical parts mentioned above are malfunctioning. The invention realizes the internal fault monitoring and positioning of the fan cabin without personally visiting the fan site, reduces the maintenance cost and improves the maintenance efficiency.

The invention relates to a system and method for controlling the container welding line inspection mechanical arm movement. The system and method is used for inspecting the mechanical arm movement. The problem that in the prior art in China, a method for planning a container welding line inspection mechanical arm movement track is not provided is solved. The inspection machine movement control system is composed of a man-machine interaction subsystem, a power management subsystem, a movement control subsystem and a mechanical arm subsystem. Five inspection tracks including the barrel welding line inspection track, the connecting pipe welding line inspection track, the intersected pipe face welding line inspection track, the intersected pipe circular bead welding line inspection track and the bottom sealing head welding line inspection track are planed and designed, then the container welding line inspection mechanical arm movement track is generated through the five tracks, and the man-machine interaction subsystem enables the movement control subsystem to control a mechanical arm to complete an inspection task according to compact movement points on the container welding line inspection mechanical arm movement track. The system and method are applied to inspection on large-scale high-risk containers in the fields such as nuclear power and chemical engineering.