10results about How to "Small pressure change" patented technology

The utility model relates to the field of circuit protection, in particular to an excitation integrated contactor with high breaking capacity, which comprises a driving system and a contact system, and further comprises an integrated excitation source, an excitation action assembly and an elastic piece, the elastic piece is arranged for one moving contact, one end of the elastic piece is fixed, the other end of the elastic piece is a free end, the excitation action assembly is fixedly connected with the free end of the elastic piece, the excitation source drives the excitation action assembly to move, the contact system is forcibly opened, and meanwhile, the elastic piece generates elastic deformation capable of restoring to the initial position; and the elastic piece, the moving contact and the excitation action assembly are all reset to initial positions during normal opening. The contactor has normal functions of the contactor and also has large current breaking and resetting functions, so that normal use of the contactor is ensured while the breaking range of the contactor is widened.

The invention provides a gas distribution method applied to wafer processing equipment. The gas distribution method comprises the following steps: S1, providing a controller, a pressure gauge, a main pipeline and at least one branch pipeline; the controller is respectively connected with the pressure gauge and the valve; and S2, the controller controls the opening value of the valve according to the change of the mean value of the pressure values of the pressure meter in the first plurality of different clock periods. The gas distribution method provided by the invention can provide stable flow change.

The utility model discloses a pressure stabilizing pipeline for a water pressure test of an air storage tank, and relates to the technical field of pressure containers. The input end of the first stop valve is connected to the output end of the pressure test pump, and the output end is connected to the input end of the first pipeline; the output end of the first pipeline is connected to the input end of the surge tank assembly; the output end of the surge tank assembly is connected to the input end of the second pipeline; the output end of the second pipeline is connected to the input end of the second stop valve; the output end of the second stop valve is connected to the water injection port of the air storage tank; the piezometric tube is of a bent buffer structure, one end of the piezometric tube is fixedly connected to the top of the surge tank assembly, and the other end of the piezometric tube is detachably connected to the pressure gauge. Therefore, the pressure change generated by the pressure test pump can be effectively buffered, and the test pressure is always maintained in the preset range, so that the risks of equipment damage and process failure possibly caused by pressure fluctuation are reduced.

The magneto-rheological shock absorber with the multiple guiding functions comprises a cylinder barrel assembly, a piston rod assembly, a guider assembly and a piston assembly, the guider assembly is arranged in the cylinder barrel assembly, the piston rod assembly comprises a piston rod, one end of the piston rod penetrates through the top end of the cylinder barrel assembly and the guider assembly to be connected with the piston assembly, and the other end of the piston rod penetrates through the cylinder barrel assembly and the guider assembly to be connected with the piston assembly. The guider assembly comprises a guider, a first guiding supporting piece and a second guiding supporting piece, the first guiding supporting piece and the second guiding supporting piece are arranged on the guider, the first guiding supporting piece and the second guiding supporting piece are vertically arranged in a spaced mode, the first guiding supporting piece is located at the upper end of the guider, and the second guiding supporting piece is located at the lower end of the guider. And a certain distance is formed between the two guide supporting pieces, so that double guidance is formed, the guide length is increased, the guidance quality is improved, the friction contact surface is not greatly increased, and the lateral force resistance and smaller friction force of the shock absorber are ensured.

The utility model relates to the technical field of battery structures, and discloses an explosion-proof battery end cover which comprises a pole and a sealing layer base, the top of the outer wall of the sealing layer base is fixedly connected with a plurality of sealing layer supporting columns, and the top of the outer wall of the sealing layer base is fixedly connected with a rubber base. The top of the outer wall of the rubber base is fixedly connected with a plurality of rubber inner supporting columns, the top of the outer wall of the rubber base is fixedly connected with a plurality of pieces of fluororubber, the tops of the outer walls of the sealing layer supporting columns are fixedly connected with a sealing layer, and the tops of the rubber inner supporting columns are fixedly connected with a rubber top seat. And the top of the fluororubber is fixedly connected with a rubber top seat. According to the utility model, the spring-like fluororubber structure is additionally arranged between the end cover and the battery, and when stress conflicts including external extrusion and internal pressure mutation occur, the spring-like fluororubber absorbs stress by virtue of elastic deformation, so that the shell and the end cover are prevented from being damaged due to stress concentration, and the risk of electrolyte leakage is further reduced to a certain extent.

The invention relates to the technical field of liquid ammonia storage and transportation, and provides a liquid ammonia storage and transportation device which comprises a storage and transportation tank, a circulation assembly, a detection assembly and a neutralization assembly, a protective shell is arranged on the outer side of the storage and transportation tank, and a circulation channel used for being filled with nitrogen is formed between the inner wall of the protective shell and the outer wall of the storage and transportation tank; the circulating assembly comprises a circulating fan, a first circulating pipe and a second circulating pipe, the inlet end of the first circulating pipe communicates with an air outlet of the circulating fan, the outlet end of the second circulating pipe communicates with an air inlet of the circulating fan, and the outlet end of the first circulating pipe and the inlet end of the second circulating pipe communicate with the circulating channel; the detection assembly and the neutralization assembly are arranged on the second circulating pipe, the detection assembly is used for detecting ammonia gas, and the neutralization assembly is used for neutralizing the ammonia gas. The liquid ammonia storage and transportation device can improve the storage and transportation safety of liquid ammonia.

The utility model relates to the field of additive monitoring equipment, and discloses a waterproof molten pool camera which comprises a machine shell, an imaging unit, an illumination unit and a control unit, the machine shell comprises a main shell body, a front cover body and a mounting plate, an imaging hole is formed in one end of the main shell body, a protection lens is arranged on the front cover body, the front cover body is fixed to the imaging hole, and the protection lens is arranged on the main shell body. The imaging unit is fixed on the main shell to seal a conveying imaging hole, the mounting plate is fixed on the main shell to seal the main shell, the imaging unit, the lighting unit and the control unit are all arranged in the main shell, the imaging unit and the lighting unit are both connected with the control unit, and the control unit is connected with the imaging unit. The imaging unit and the lighting unit are arranged towards the imaging hole and are suitable for adjusting the included angle between the imaging direction of the imaging unit and the lighting direction of the lighting unit, the waterproof and dustproof effects of the molten pool camera can be improved, and the imaging quality of the molten pool camera is guaranteed.

The invention provides a gas distribution device, which is applied to wafer processing equipment, and comprises a main pipeline and at least two branch pipelines, one end of each branch pipeline is connected with the main pipeline, and the other end of each branch pipeline is connected with the main pipeline. The other end of each branch pipeline is correspondingly connected with one area of a gas inlet piece of a cavity of the wafer processing equipment; the branch pipeline comprises a valve; the pressure gauge is arranged at the upstream of the valve and is used for detecting the pressure value at the upstream of the valve; and the controller is respectively connected with the pressure gauge and the valve, and is used for controlling the opening value of the valve according to the change of the mean value of the pressure values of the pressure gauge in a plurality of different previous clock periods. The gas distribution device provided by the invention can provide stable flow change.

This invention discloses a differential pressure automatic jacketing device, comprising a cylinder with a power cylinder head connected to the top of the cylinder; a hollow piston rod is disposed inside the cylinder, with a power cylinder piston and reversing device connected to one end of the hollow piston rod near the power cylinder head, and a jacketing cylinder piston connected to the other end of the hollow piston rod; a jacketing cylinder head is connected to the bottom of the cylinder; a separation sleeve between the power cylinder and the drain / jacketing cylinder, and a separation sleeve between the drain / jacketing cylinder and the jacketing cylinder are sleeved on the outer wall of the hollow piston rod, the separation sleeve between the power cylinder and the drain / jacketing cylinder being fixed to the inner wall of the cylinder by a first positioning pin; the separation sleeve between the drain / jacketing cylinder and the jacketing cylinder being fixed to the inner wall of the cylinder by a second positioning pin; the cylinder also has a power fluid inlet, a power fluid and jacketing gas outlet, and an air inlet, the air inlet being connected to the jacketing cylinder head via a pipe. This differential pressure automatic jacketing device can efficiently draw jacketing gas from the annulus and discharge it into the production pipeline, is safe and effective, and is convenient to install and maintain.

The application provides a subcutaneous focusing ultrasonic device, and relates to the field of focusing ultrasonic cosmetic technology, which comprises a handle part, an ultrasonic working head arranged at the distal end of the handle part, the ultrasonic working head being configured to be attached to the surface of human skin and emit ultrasonic pulses to the human skin along a first direction to form an ultrasonic focus in subcutaneous tissue, the first direction being perpendicular to the surface of human skin, a flexible connecting part connected between the handle part and the ultrasonic working head, the flexible connecting part being configured to be able to stretch and contract along the first direction to compensate for the depth deviation of the ultrasonic focus caused by the change of holding pressure, and an adjusting system configured to adjust the length change of the flexible connecting part along the first direction, when the holding pressure on the handle part increases, the adjusting system makes the flexible connecting part contract along the first direction, and when the holding pressure on the handle part decreases, the adjusting system makes the flexible connecting part elongate along the first direction. The stability of the ultrasonic focus in the treatment process in the related art is improved.