14results about How to "Safe switch" patented technology

The utility model discloses a bath rack for nursing old people, and relates to the technical field of articles for daily use. Comprising a seat and a standing frame, the standing frame is located on one side of the seat, the bottom of the seat and the bottom of the standing frame are jointly connected with a connecting plate, and a sponge cushion located between the seat and the standing frame is arranged at the top of the connecting plate; a shower head is movably arranged at the top of the standing frame, a fixing rod is arranged in the standing frame and movably sleeved with an adjusting rod, a pedal is arranged at the end, away from the fixing rod, of the adjusting rod, and a circle of positioning groove is formed in the fixing rod. The seat and the standing frame are integrated through the connecting plate, the sponge cushion on the connecting plate enables a user to switch between the standing frame and the seat more safely, the legs of the user can be supported through the pedal, the legs of the user can be conveniently cleaned when the user sits on the seat, and the user can conveniently sit on the seat. The shower head can be clamped on the standing frame, the first hand-held frame and the second hand-held frame through the clamping base, so that a user can use the shower head more conveniently, and the use requirements of the user are met.

The invention belongs to the technical field of gas separation, and particularly relates to a dynamic control purification system and method for multi-process source hydrogen, and the system comprises a mixing and pretreatment unit, a multi-tower PSA separation unit, a product and waste gas collection unit and a control and execution unit; the mixing and pretreatment unit comprises a gas mixer, a preheater and a deaerator which are connected in sequence; the multi-tower PSA separation unit is connected between the mixing and pretreatment unit and the product and waste gas collection unit through a pipeline, and the multi-tower PSA separation unit at least comprises four adsorption towers which are connected in parallel; the control and execution unit comprises a control module, a first online analyzer and a second online analyzer. Compared with the prior art, the problem that in the prior art, operation of a fixed time sequence program cannot effectively cope with impurity fluctuation existing in hydrogen of a mixed source is solved. According to the scheme, on the basis of dynamic regulation and control of the impurity concentration, tiny fluctuation of the product purity is maintained under large feeding concentration fluctuation, and qualified output of the product is guaranteed.

The application provides a cable GIS terminal type test device to construct a mechatronic test platform integrating self-shielding environment simulation, multi-posture working condition reproduction, self-adaptive electrical connection and built-in nondestructive testing. The device itself forms a Faraday cage effect by the metal cabin to replace a special shielding hall. The posture driving mechanism is used to realize safe switching of the terminal between horizontal and vertical working conditions. Through the sensor and self-adaptive electrical connection assembly, the comprehensive solution of efficiently and accurately completing the full item type test of the cable GIS terminal in the ordinary environment is realized.

The utility model relates to the field of electrical equipment, and provides an electrical control cabinet, which comprises a cabinet body, an electrical structure and a PLC (Programmable Logic Controller), and is characterized in that the electrical structure comprises a plurality of loads and lines connected with the loads; a display screen is arranged on the cabinet body, a plurality of control keys are arranged on the display screen, and each control key corresponds to at least one load; the PLC controller is connected with the display screen and the plurality of loads. The electrical control cabinet is used for overcoming the defects that after an electrical control cabinet is installed in the prior art, a circuit topological structure is difficult to adjust again, and certain potential safety hazards exist in the adjusting process, according to the scheme, the connection state of a corresponding load can be rapidly switched through a button on a cabinet body, and the circuit topological structure is convenient to adjust and high in safety.

This invention relates to the field of grinding and pulverizing, specifically disclosing a grinding device for traditional Chinese medicine used in animal husbandry. The device includes a mixing chamber mechanism with a stirring mechanism mounted on it. A discharge channel mechanism is fixedly connected to the bottom of the mixing chamber mechanism, and an operating lever mechanism is slidably engaged with the discharge channel mechanism. A pulverizing blade mechanism is also provided at the bottom of the mixing chamber mechanism. The stirring mechanism is used to pulverize the traditional Chinese medicine within the mixing chamber mechanism. This invention allows for simultaneous control of the opening and closing of the discharge channel mechanism and the raising and lowering of the pulverizing blade mechanism by controlling the movement of the operating lever mechanism. This allows the operator to trigger both the discharge and auxiliary cleaning stages with a simple pull-down motion, greatly simplifying the operation and effectively improving the efficiency of the entire work cycle from grinding to discharge. Through the active descent and rotation of the pulverizing blade mechanism during the discharge stage, the device possesses strong self-cleaning and assisted discharge capabilities.

A vacuum interrupter assembly (10) for a power switching switch comprises: a vacuum interrupter (11); and a drive mechanism (12) coupled to the vacuum interrupter (11) and configured to drive the opening and closing of electrical contacts of the vacuum interrupter (11). The drive mechanism (12) comprises a drive rod (19) and a guide tube (18) surrounding the drive rod (19), so that the drive rod (19) can move axially along the longitudinal axis (L) of the vacuum interrupter assembly (10) inside the guide tube (18). The damping unit (20) is coupled to the drive mechanism (12) and comprises a first chamber (21), a second chamber (22), and a piston (29) arranged therebetween relative to the longitudinal axis (L), wherein the chambers (21, 22) are hydraulically coupled to each other and are limited by a guide tube (18) and the piston (29), and wherein the piston (29) is coupled to a drive rod (19) which is capable of axial movement along the longitudinal axis (L), so that when interacting with a fluid, the damping unit (20) provides hydraulic damping when opening and closing the electrical contacts of the vacuum interrupter (11) due to the movement of the drive rod (19) and the piston (29).

The invention discloses an electric power communication system. Relates to the technical field of electronic information or other related fields, and comprises a main dispatching information system which is used for receiving power grid dispatching data, configuring an access control strategy and sending the access control strategy after being interconnected with a mobile emergency command platform; the standby dispatching control system is used for receiving the emergency power grid dispatching data, determining an emergency power grid control strategy and sending the emergency power grid control strategy to the mobile emergency command platform under the condition that the main dispatching information system loses functions; the mobile emergency command platform is used for receiving the access control strategy and the emergency power grid control strategy and issuing the access control strategy and the emergency power grid control strategy to the service terminal; and the service terminal is used for receiving the emergency power grid control strategy sent by the mobile emergency command platform according to the encrypted communication network. According to the invention, the problems of low safety and poor stability of the emergency communication system when the power grid dispatching function is abnormal in the prior art are solved.

The present invention discloses a charging method and a charging device based on a full matrix coding mechanism. In the full matrix coding mechanism, the charging gun number is the longitude, the power module group number is the latitude, and the intersection is the switch group number of the circuit switching switch group between the corresponding charging gun and the power module group. The charging gun number and the power module group number are both n, n is a natural number starting from 1, and the switch group number of the circuit switching switch group is coded and distinguished by the longitude and latitude coordinates (n, n); the steps of the method include a charging circuit switching process, and the charging circuit switching process includes starting the charging process, and the starting charging process is: charging gun n starts charging, specifying power module group n, and then specifying the circuit switching switch group and closing its corresponding circuit switching switch group (n, n). The present invention uses the full matrix coding relationship to quickly, conveniently and easily find the corresponding charging circuit, improve the charging efficiency, and ensure that the entire charging circuit is simple and safe.

The invention discloses a light electric arc extinction switch capable of disconnecting mutual inductor leads synchronously, and relates to the technical field of power system automation equipment. Comprising an external insulating cover and an internal arc extinguishing device. The top of the external insulating cover is provided with a first incoming line wiring assembly matched with the access of a high-voltage incoming line, and the incoming line wiring assembly comprises a vacuum switch chamber; the internal arc-extinguishing device comprises an arc-extinguishing insulating rod, a voltage release assembly and an insulating rod movement distance regulation and control assembly which are installed at the lower section of the arc-extinguishing insulating rod body, a second incoming line wiring assembly which is installed at the upper section of the arc-extinguishing insulating rod body and cooperates with equipment incoming line access, and a switch insulating block which is installed at the top of the arc-extinguishing insulating rod and cooperates with the vacuum switch chamber. And the control module is used for controlling the access and cut-off of incoming current. The light electric arc extinction switch remotely controls connection and disconnection of incoming line current, and works by taking vacuum as an arc extinction medium based on a zero arc extinction principle, so that generation and extinction of contact arcs are carried out in the vacuum.

The invention discloses a variable-frequency starting control system for flue gas auxiliary steam oil displacement integrated equipment, which comprises a three-phase power supply, a first motor, a second motor and a frequency converter, and is characterized in that the input end of the frequency converter is connected with the output end of the three-phase power supply through a first circuit breaker; the output end of the frequency converter is connected with the first motor and the second motor through a second contactor and a fourth contactor respectively; a first contactor is connected in parallel between the input end of the first circuit breaker and the output end of the second contactor; a third contactor is connected in parallel between the input end of the first circuit breaker and the output end of the fourth contactor; the control end of the frequency converter controls on-off of the first contactor, the second contactor, the third contactor and the fourth contactor through a secondary side control loop. According to the invention, a mode that the frequency converter drives two electric devices is adopted, automatic switching control of double motors between frequency conversion starting and power frequency operation is realized through the secondary side control loop, the economical efficiency and the stability of system operation are effectively improved, and the fault risk is reduced.

This invention relates to a handle structure and an automotive window. The handle structure includes a safety component, a handle, and a locking component. The mounting component includes a corresponding mounting base and a handle stop. The handle includes a connected limiting section and a rotating section. The rotating section is rotatably mounted on the mounting base and has two mating parts spaced apart along the rotation direction. When the limiting section rotates with the rotating section, it has a window-locking position blocked by the handle stop and an window-opening position that avoids the handle stop. The locking component includes a locking member, which is movably mounted on the mounting base and corresponds to the mating parts, so that when the limiting section rotates to the window-locking position and the window-opening position, it can approach and move away from the adjacent mating parts. In this solution, the handle can be stably locked when the window is in the open or closed position, allowing the window to switch safely and quickly between the open and closed positions, effectively ensuring safety and providing simple and convenient operation.

This invention discloses a cholesteric liquid crystal display device and its driving method, belonging to the field of display technology. The device integrates a source switching module and an external driving module on a first substrate, respectively connected to the data leads of the driving chip, the external power supply, and the internal data lines. The driving method is executed by a timing control module. First, the external driving module is turned on to initialize the screen using an external high-voltage signal. Then, the system switches to the source switching module, using the low-voltage data signal from the driving chip and writing the image via time-division multiplexing. Finally, the display can be maintained by simultaneously turning off both modules to make the pixels float. This invention achieves safe switching of the driving source through structural innovation, effectively reducing the performance requirements of the driving chip, avoiding current backflow, and significantly reducing the number of chips used.

The invention relates to a switching method for a steam source of a water feed pump turbine, which belongs to the technical field of water supply of thermal power generating units and comprises the following steps of: a, judging whether the running steam source pressure of the water feed pump turbine is lower than 1MPa or not, and if so, switching the steam source of the water feed pump turbine in time; b, judging whether the unit load is stable or not and whether the auxiliary steam pressure is stable or not, and if yes, switching a steam source of a water feeding pump turbine; c, judging whether the boiler feed water flow is more than 800t / h and has no fluctuation or not, and if yes, switching a steam source of a steam turbine of a feed pump; and d, judging whether two feed pump turbines operate at the same time or one feed pump turbine and the electric pump operate at the same time. The method has the advantages that the operation efficiency of a thermal power plant is improved, unplanned shutdown accidents are reduced, and the service life of equipment is prolonged, so that the stability and the economical efficiency of a whole power system are enhanced; rapid and safe switching of the steam source of the water feeding pump turbine is achieved, equipment damage and unit non-stop are avoided, and the safety and economic benefits of unit operation are enhanced.

The utility model discloses a quick-release pluggable battery of an in-ear wireless earphone, which relates to the technical field of wireless earphones and comprises an earphone head, a mounting mechanism is arranged on the earphone head, and a mounting groove is arranged on one side of the earphone head. The installation mechanism comprises a battery bin, a first connecting end, a metal sheet, a battery and a second connecting end, the battery bin is installed on the inner wall of the installation groove in a sliding mode, the first connecting end is fixedly installed at the bottom end of the inner wall of the battery bin, the metal sheet is fixedly installed on one side of the battery bin, and the second connecting end is fixedly installed on one side of the inner wall of the installation groove. By arranging the mounting mechanism, a pluggable battery convenient for a user to quickly mount and replace is designed, the battery compartment is arranged for mounting the battery, a contact port in the battery is connected with the first connecting end, and the battery compartment is connected with the second connecting end through a metal sheet to supply power to the earphone, so that safe and efficient power supply switching can be realized; and the use convenience and the endurance time of the earphone are enhanced.