40results about How to "Avoid device damage" patented technology

The invention discloses a hydrochloride total-recover zero-discharge method in PVC production and a relative equipment, which uses a new absorber as hydrochloride combination adsorption tower, an alcaine desorption equipment and a dilute hydrochloric acid deep desorption equipment as main equipments, uses the combination adsorption tower to absorb the over hydrochloride in the chloroethylene production and uses the alcaine desorption equipment and dilute hydrochloric acid deep desorption equipment to convert into the synthesis gas material of chloroethylene. The invention can directly convert the low-density alcaine generated in traditional method into the synthesis gas material of chloroethylene, to save production cost, avoid environment pollution and simplify hydrochloride recovery, with few equipments, small volume, thereby saving investment.

The present invention discloses a 3D memory device. The 3D memory device includes a gate stack structure, a plurality of channel pillars, and a plurality of dummy channel pillars; the gate stack structure includes a plurality of gate conductors and a plurality of interlayer insulating layers which are alternately stacked; the plurality of channel pillars penetrate the gate stack structure so as toform a transistor; and the plurality of dummy channel pillars pass through at least some of the gate conductors in the gate stack structure so as to provide support, wherein at least one of the dummychannel pillars is connected with a heat dissipation structure. According to the 3D memory device of the invention, the dummy channel pillars are connected to the heat dissipation structure, so thata heat dissipation path can be provided, and therefore, the yield and reliability of the 3D memory device can be improved.

The invention relates to a display device structure and a manufacturing method thereof and relates to the technical field of a semiconductor. Buffer layers are arranged between a display module and a top film layer and between a flexible substrate and a protection film to buffer stress of the applying process on the display module, so damage to the device caused by the stress can be effectively avoided, and performance of the display device is improved.

The invention provides automatic coupling and packaging equipment for a multi-channel COB optical module. The equipment comprises a mounting plate, a first clamping mechanism, a second clamping mechanism, a dispensing mechanism, a curing mechanism and a monitoring mechanism, wherein the first clamping mechanism is used for clamping a lens and a tail fiber, the tail fiber is inserted into the lens,the second clamping mechanism is used for clamping a circuit board, a chip is arranged on the circuit board, the dispensing mechanism and the first clamping mechanism are oppositely arranged, the dispensing mechanism is used for dispensing on the chip, the curing mechanism is used for curing the glue between the lens and the circuit board after coupling, the monitoring mechanism is provided witha first monitoring device and a second monitoring device, and the monitoring mechanism is used for monitoring the relative position between the lens and the chip. The equipment is advantaged in that the structure is stable, clamping is firm, t coupling precision is high, the packaging time is short, problems of precision and device damage caused by manual coupling are avoided, production cost is effectively reduced, and production efficiency is improved.

The invention discloses a production method for building glass in the technical field of building material processing, comprising a bottom plate. A drive mechanism is provided at the top of the bottomplate; a gluing device is provided at the top of the bottom plate, and comprises a first rotating shaft fixedly connected to the center of the top of the bottom plate; a first rotating disc is fixedly connected to the top of the first rotating shaft; a first chute is formed in the outer wall of the first rotating disc; and a rotating ring is rotatably connected to the outer wall of the first rotating shaft. By providing the gluing device, glue can be accurately injected to the edges of the inner sides of two glass stacks, the dripping of the glue due to non-ideal glue spraying position is avoided, so that the waste of the glue is reduced, the pollution to a workbench is reduced, the gluing is more accurate, the problem that two pieces of glass cannot be bonded due to inaccurate gluing isavoided, the processing quality is improved, the processing of glass plates with different shapes can be implemented, and the practicability of the device can be greatly improved.

The invention discloses an AOI detection clamp and a clamping method for a circuit board, and belongs to the field of electronic assembly and detection. The AOI detection clamp provided by the invention comprises fastening devices, locking devices, slide blocks, fixed supports, a frame, fixing bars and screws, wherein the two fixing bars are fixed on the frame in parallel, and a slide groove is arranged in each fixing bar; the two fixed supports are mutually parallel, vertically placed on the fixing bars, and matched with the slide grooves of the fixing bars through the fastening devices; a slide groove is arranged in each fixed support, and a plurality of movable slide blocks is installed in each slide groove; and an open hole capable of being matched with a circuit board installation hole is formed in each slide block, each slide block can be fixed to the circuit board and can be fixed to the slide groove of the corresponding fixed support through the locking devices. With the adoption of the AOI detection clamp and the clamping method for the circuit board, which are disclosed by the invention, the application range of AOI detection is expanded, thus more types of circuit boards can be subjected to the AOI detection; and meanwhile, the adverse effects of device damage, bonding pad falling-off and the like caused due to interference between the clamp and the devices of the circuit board are avoided.

The invention provides a borehole inner wall ultrasonic scanning and imaging device, which comprises an external connection unit, a guidance pipe body and a scanning unit, wherein the external connection unit comprises a numerical control module and a wind speed regulation and control device; the numerical control module is connected with the scanning unit; the wind speed regulation and control device is provided with an air duct which is independently connected with the wind speed regulation and control device and the guidance pipe body; a magnetic pull wire is arranged between the numericalcontrol module and the scanning unit; the scanning unit comprises a scanning unit shell, wherein an ultrasonic distance measuring instrument and a scanning driving motor are arranged in the scanning unit shell; the motor shaft of the scanning driving motor is connected with a transmission shaft; the transmission shaft is connected with the ultrasonic distance measuring instrument; and the ultrasonic distance measuring instrument is provided with an ultrasonic probe. In addition, the invention also provides a scanning and imaging method for the above borehole inner wall ultrasonic scanning andimaging device. By use of the device disclosed by the invention, the three-image scanning and imaging of the borehole inner wall can be realized, a three-dimensional scanning image of a whole boreholeis obtained, and the detection of a hole collapsing position of the borehole is realized.

The invention discloses a water cooling structure for an insert type motor controller. The water cooling structure is characterized in that a control box body made of die-casting aluminum is formed by the aid of a die-casting process, bottom grooves are parallelly arranged at intervals at the bottom of the control box body, cooling fins are split from the control box body, arranged on two sides of a cooling base board respectively and inserted into the bottom grooves of the control box body through the top edge of the cooling base board in an insert mode, a water channel is arranged at the bottom of the control box body, the cooling fins are positioned in the water channel, and a water inlet and a water outlet are arranged at two ends of the water channel respectively. By the aid of the water cooling structure, larger cooling area can be realized with the same size and weight, and cooling effects are greatly improved.

The invention discloses a sunshine tank which comprises a tank body, a sunshine board and a fixing part used for fixing the sunshine board at an opening of the tank body, and further comprises a cover used for sealing the opening and fixing the fixing part. According to the sunshine tank, due to the fact that the cover used for sealing the opening of the tank body of the sunshine tank is arranged on the sunshine tank, the opening can be sealed through the cover when the sunshine tank is not used or light does not need to be irradiated on the sunlight board, impurities such as dust can be prevented from falling on the sunlight board or other devices, and the devices in the sunlight tank can be protected against damage. In addition, the cover fixes the fixing part, and therefore the fixing part and the sunlight board fixed on the fixing part can be stable and are not prone to damage.

The invention discloses a flyback switching power supply used for charging a load. The power supply includes a switch control chip, a charge circuit, a discharge circuit, a rectification circuit and an energy storage circuit. The switch control chip outputs control signals and enables the charge circuit to connect with the load and enables the discharge circuit to disconnect with ground at the same time, or enables the charge circuit to disconnect with the load and enables the discharge circuit to connect with ground at the same time. The rectification circuit performs rectification on AC signals transmitted at the AC signal terminal so as to output DC signals. The charge circuit charges the load through the DC signals when being connected to the load. The energy storage circuit acquires the DC signals and stores energy or discharges through the discharge circuit. The discharge circuit disconnects with the ground or connects with the ground for discharge under the control of the control signals. According to the invention, the discharge circuit discharges to the energy storage circuit, so that electric shock and device damage caused by large electric quantity of the energy storage circuit when a prior flyback switching power supply stops working are avoided.

The invention relates to an electricity metering system, an electricity measuring device and an electricity metering device. The electricity measuring device measures power factors, a current effective value and current harmonic content of a power transmission line and sends the power factors, the current effective value and the current harmonic content of the power transmission line to the electricity metering device in a wireless mode; the electricity metering device measures a voltage effective value of the line and receives the power factors, the current effective value and the current harmonic content of the power transmission line from the electricity measuring device; the loaded electricity of the power transmission line is calculated according to the power factors, the current effective value and the voltage effective value.

The invention relates to a silicon carbide MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) driving circuit, a switching power supply and electronic equipment, in the driving circuit, when a received first voltage signal is a positive voltage signal, a first clamping circuit drives a first silicon carbide MOSFET to be conducted; when the received first voltage signal is a negative voltage signal, the first clamping circuit drives the first silicon carbide MOSFET to be disconnected; the second driving circuit comprises a second compensation circuit and a second clamping circuit; when the received second voltage signal is a positive voltage signal, the second clamping circuit drives the second silicon carbide MOSFET to be disconnected; and when the received second voltage signal is a negative voltage signal, the second clamping circuit drives the second silicon carbide MOSFET to be conducted, so that alternate conduction of the two silicon carbide MOSFETs can be realized, the silicon carbide MOSFET driving circuit can work at a megahertz level, the circuit structure is simplified, no voltage spike is generated, the silicon carbide MOSFETs with relatively high gate voltage requirements are effectively protected, and the service life of the silicon carbide MOSFET driving circuit is prolonged. And device damage is avoided.

The invention discloses a machine-made sand regulator preparation device which comprises a preparation box, a stirring mechanism and a buffering mechanism are arranged in the preparation box, a damping mechanism is arranged at the bottom of the preparation box, the stirring mechanism is a motor fixedly connected to the top of the preparation box, a rotating shaft is in power connection with an output shaft of the motor, and the other end of the rotating shaft extends into the preparation box. The inner walls of the two sides of the preparation box are fixedly connected with supporting rods, the tops of the supporting rods are rotationally connected with first rotating rods, the other ends of the first rotating rods extend out of the top of the preparation box, and the inner walls of the first sliding grooves are slidably connected with first stirring rods. Through the arranged stirring mechanism, a motor is used for driving a rotating shaft to enable an auger blade to turn over materials in the preparation box upwards, meanwhile, a first rotating rod is driven by a belt to rotate, a first stirring rod is located in a first sliding groove to rotate, and the materials in the preparation box are stirred; and reduction of the preparation yield caused by caking of raw materials of the machine-made sand regulator is prevented.

The invention discloses a discharge circuit for preventing voltages of batteries from flowing backwards and a control method. The discharge circuit comprises a high-voltage direct current output module with a positive electrode and a negative electrode, wherein each high-voltage direct current output module is connected with a corresponding high-voltage direct current distribution unit; a discharge unit is connected between each high-voltage direct current output module and each high-voltage direct current distribution unit in parallel; a first switch K1 and a second switch K2 are arranged on the positive electrode and the negative electrode of each high-voltage direct current distribution unit respectively; the first switch K1 or the second switch K2 is connected with a diode D1 or a diode D2 in series; the negative electrode of the diode D1 is connected with the positive electrode of a battery pack; the positive electrode of the diode D2 is connected with the negative electrode of the battery pack; all high-voltage direct current distribution units all are connected with the battery pack; when a system does not charge a load or the batteries, the voltages of the batteries cannot flow back to input ends due to presence of the diode D1 or the diode D2; and meanwhile, the high-voltage direct current output modules are controlled to be shut down, so that over-zero separation of the high-voltage direct current distribution units K1 and K2 can be achieved; and damage to a device caused by high-voltage and high-current arc discharge is avoided.

The invention discloses a P-type semiconductor low-resistance ohmic contact structure and a preparation method thereof. The P-type semiconductor low-resistance ohmic contact structure comprises a P-type semiconductor substrate and a metallic ternary transition metal nitride film formed on the P-type semiconductor substrate, wherein the material of the ternary transition metal nitride film comprises one of TiBN, ZrBN, TiAlN and ZrAlN. According to the preparation method provided by the embodiment of the invention, the high temperature resistance of the transition metal nitride is utilized to improve the thermal stability of the ohmic contact of the P-type semiconductor, which is of great significance to high-power devices; and secondly, B and Al elements are introduced into transition metalnitrides such as TiN and ZrN, the work function of the transition metal nitride film is improved, and ohmic contact with a P-type semiconductor material is achieved.

The present invention discloses a multi-stage air pressure regulator which comprises a rack, connecting rods are symmetrically and fixedly connected to the two sides of the rack, an air inlet cavity is fixedly connected to the ends, away from the rack, of the two connecting rods, an air inlet pipe is fixedly connected to one end of the air inlet cavity, and branch exhaust pipes are fixedly connected to the top of the air inlet cavity; a three-way angle head is fixedly connected between the two branch exhaust pipes, a main exhaust pipe is fixedly connected to the end, away from the branch exhaust pipes, of the three-way angle head, an air pressure selecting device is fixedly connected to one side of the air inlet cavity, and a first pressure adjusting device is fixedly connected to the middle of the top of the rack; and the pressure of natural gas added into the device is measured through the gas pressure selecting device, the device is prevented from being damaged due to the fact that the gas pressure is too large, the pressure bearing range of the first pressure adjusting device and the pressure bearing range of the second pressure adjusting device are adjusted, the natural gas can safely enter the main exhaust pipe through the branch exhaust pipes, and the device is protected.

The invention discloses a fixing lamp holder device for preventing an LED lamp tube from falling off, and relates to the technical field of a fixing lamp holder for preventing the LED lamp tube from falling off. The device comprises an adjustable base, a vertical adjusting structure, a fixing structure, a connecting structure, a horizontal adjusting structure, a clamping structure, an angle adjusting structure and a placing structure, the upper surface of a knob supporting cylinder is connected with the lower surface of a bottom plate, the lower surface of a T-shaped vertical rod is connected with the upper surface of the bottom plate, and the surface of one side of a U-shaped sliding block is connected with the surface of one side of the T-shaped vertical rod; and the U-shaped sliding block is in sliding fit with the T-shaped vertical rod, the surface of one side of a bracket is connected with the surface of the other side of the U-shaped sliding block, the surfaces of the two sides of a lamp tube body are connected with the surface of the other side of the bracket, and an installation cylinder is installed on the outer surface of the lamp tube body. By arranging an elastic piece and a contraction spring, a buckling cylinder and a mounting cylinder can be accurately clamped, so that the lamp tube body is firmly fixed, device damage caused by falling of the lamp tube body is effectively avoided, and the service life of the device is greatly prolonged.

The invention discloses an auxiliary bone sawing device for meat processing, which comprises a working frame and is characterized in that a mounting hole I is formed in the top surface of the working frame in a penetrating manner, an upper slitting pipe is fixed on the inner wall of the mounting hole I, a feeding hopper is fixed at the top end of the upper slitting pipe, and a feeding disc for feeding meat bones is connected to the rear side of the feeding hopper; the feeding disc is fixed to the top face of the working frame through a support, a mounting plate is fixed to the inner wall of the middle of the front side of the working frame, a second mounting hole is formed in the top face of the mounting plate in a penetrating mode, a lower slitting pipe is fixed to the inner wall of the second mounting hole, and bone fixing mechanisms are installed on the lower side of the upper slitting pipe and the upper side of the lower slitting pipe correspondingly. The bone sawing device is reasonable in design, materials are convenient to change during bone sawing, so that the bone sawing efficiency is greatly improved, the bone sawing device runs stably during bone sawing, the amount of broken bones generated after bone sawing is reduced, and then the taste of big bones during boiling is well guaranteed.

The invention discloses a porous film getter structure. Theporous film getter structure comprises a wafer and a film getter, the upper surface of the wafer is provided with a groove structure, the inner wall of the groove structure is of a porous structure, and the porous structure is covered with the film getter. The invention further discloses a preparation method of the structure, dry or wet etching is combined with gold particle auxiliary etching to form the three-dimensional film getter structure, and the porous structure is prepared on the prepared groove structure to increase the deposition area and deposition volume of the film getter, so that the getter performance of the film getter is effectively improved, and the service life of the film getter is effectively prolonged. The gold film deposited through the evaporation-stripping process can form uniformly distributed gold particles on the side wall and the substrate of the groove under the process condition of high-temperature rapid annealing, the annealed gold particles are used for carrying out the etching process, uniformly distributed porous structures are etched on the side wall, the adhesion of the getter film, the side wall and the bottom substrate is further improved, and the phenomena of falling of the getter, device damage and the like are avoided.

The invention discloses a backlight driving power protection method and system, a display device and a storage medium. The power protection method comprises the following steps of: acquiring a total power value of a backlight unit which comprises a plurality of light-emitting chips; comparing the total power value with a preset power protection value; and when the total power value is greater than the preset power protection value, reducing the brightness of the light-emitting chips, so as to make the total power value of the backlight unit less than the preset power protection value. The problem that in the prior art, a protection circuit acts frequently, so that a power device is started or closed frequently, high-load operation is caused, and damage is caused is solved.

The invention is applicable to the technical field of parallel operation systems, and discloses a short-circuit protection method and device for a UPS parallel operation system and a UPS. The method is applied to any UPS in the UPS parallel operation system, and the method comprises the following steps: when a load short circuit is detected, generating short-circuit protection information, sendingthe short-circuit protection information to other UPSs in the UPS parallel operation system, and conducting short-circuit protection according to the short-circuit protection information, wherein theshort-circuit protection information is used for indicating each UPS in the UPS parallel operation system to perform short-circuit protection at the same time; and when short-circuit protection information sent by other UPSs in the UPS parallel operation system is received, performing short-circuit protection according to the short-circuit protection information. According to the invention, the phenomenon of successive short-circuit protection is avoided, so that the phenomenon that a certain UPS bears current far beyond a current limiting point of the UPS within a certain period of time is avoided, devices in the UPS can be prevented from being damaged, and the purpose of protecting devices in the UPS is achieved.