7results about How to "Easy pressure control" patented technology

The embodiment of the invention provides a battery tray, a battery pack and electric equipment, and belongs to the technical field of batteries. The battery tray comprises a tray body used for accommodating a battery cell; the pressure applying assembly is arranged in the tray body, and the pressure applying assembly is provided with a cavity; and the pressure regulating assembly is provided with a first pressure cavity and a second pressure cavity which are variable in volume, the sum of the volume of the first pressure cavity and the volume of the second pressure cavity is fixed, and the first pressure cavity is communicated with the cavity, so that the second medium in the first pressure cavity applies pressure to the battery cell through the cavity. Two media with different expansibility are combined, and pressure control is achieved, so that pressure control is more convenient.

The invention relates to an ophthalmic pressure control system comprising: a pressure regulator having an input port and an output port; and an infusion line having a proximal end and a distal end, the proximal end being connected to the output port of the pressure regulator and the distal end being removably connected to the ophthalmic irrigation module. Further, the system includes a control unit that drives the pressure regulator to control infusion fluid pressure at the distal end of the ophthalmic irrigation module. The control unit is arranged for performing a fluid calibration process comprising the step of determining a fluid impedance of the ophthalmic irrigation module. The infusion line is associated with a kit of parts including a first ophthalmic irrigation device and a second ophthalmic irrigation device, or the ophthalmic irrigation module is an ophthalmic irrigation device for surgery.

This utility model discloses an upper mold pressurization system based on a wet paper blank hot pressing equipment, relating to the field of paper forming technology. The utility model includes an upper mold fixing seat, a pneumatic device, a hydraulic device, and several guiding mechanisms. A connecting sleeve is fixed at the midpoint of the top surface of the upper mold fixing seat, and a circular constriction section is integrally connected to the top of the connecting sleeve. The hydraulic device is a hydraulic cylinder, vertically mounted on the top of the upper mold fixing seat and concentric with the connecting sleeve. The piston rod end of the hydraulic device passes through the constriction section and is fixed with a sliding column end. This utility model, through the design of a pressurization system combining pneumatic and hydraulic cylinders, can achieve multi-stage stepped pressurization. Low-pressure venting is achieved through pneumatic cylinder pressurization in the early stage of hot pressing, medium-pressure shaping is performed in the middle stage of hot pressing, and high-pressure compaction is performed in the later stage of hot pressing. Multi-stage pressurization can improve the gradual and dense arrangement of pulp fibers in the wet paper blank, reduce surface burrs, improve paperboard quality, and reduce subsequent polishing and coating costs.

The invention is suitable for the technical field of communication, and provides a networked communication method of a room pressure controller and an atmospheric pressure reference monitor. A current atmospheric pressure value is collected through an atmospheric pressure reference monitor and is periodically sent to a plurality of room pressure controllers on a bus; a plurality of room pressure controllers measure an ambient atmospheric pressure value and judge a communication state; for the room pressure controller in a normal communication state, calculating and displaying an air pressure difference value by an instrument according to the current atmospheric pressure value and the corresponding ambient atmospheric pressure value; and for the room pressure controller whose communication state is communication interruption, the instrument displays the current atmospheric pressure value and the corresponding ambient atmospheric pressure value. Periodic data synchronization, difference value calculation and communication state self-adaptive display of the atmospheric pressure reference monitor and the plurality of room pressure controllers can be realized, pressure control is facilitated, and the system adapts to scenes such as a nuclear auxiliary plant and a medical clean room for accurately monitoring the pressure difference value.

The invention discloses a saturated frozen soil permeability test device which comprises a bracket; the base is provided with a lower liquid permeable stone and a liquid inlet hole, and the liquid inlet hole is connected with a liquid inlet device; a lower positive temperature circulation tank; the first constant-temperature circulating tank is connected with the lower positive-temperature circulating tank; a middle negative temperature circulation tank; the second constant-temperature circulating tank is connected with the middle negative-temperature circulating tank; an upper positive temperature circulation tank; the third constant-temperature circulating tank is connected with the upper positive-temperature circulating tank; the top cover is internally provided with an upper liquid permeable stone, an air outlet hole and a liquid outlet hole, the air outlet hole is connected with an air exhaust saturation device, and the liquid outlet hole is connected with a liquid outlet device. The invention also discloses a saturated frozen soil permeability test method. The test device disclosed by the invention integrates soil sample preparation, air exhaust saturation and permeability test, can eliminate errors in each stage, and ensures that the permeability coefficient is more accurate; the temperature of the soil body can be accurately controlled, the soil body can form'thawing-freezing-thawing 'from top to bottom, transition exists between the thawing soil and the frozen soil, and'ice film' on the surface of the frozen soil is eliminated.

The invention relates to the technical field of etching devices, and particularly discloses an air exhausting device of ICP equipment, which comprises a shell, a first chamber and a second chamber are respectively arranged in the shell from bottom to top, a molecular pump is fixedly connected in the first chamber, a reaction chamber is fixedly connected in the second chamber, an object placing table is fixedly connected in the reaction chamber, and the object placing table is fixedly connected in the shell. The rotating shaft drives the extrusion rods at the bottom of the rotating shaft to rotate synchronously, the extrusion rods can make contact with the outer surfaces of the sliding blocks in the rotating process, the sliding blocks can be pushed to move in the circular sliding grooves along with continuous rotation of the extrusion rods, and in the process, scraping plates outside the sliding blocks can clean impurities attached to the inner walls of the exhaust holes; by means of the arrangement, the situation that the exhaust holes are blocked due to the fact that the foreign matter stays and deposits in the exhaust holes can be avoided, good output of waste gas flow is guaranteed, and then the effect of accelerating discharging of reaction by-products is achieved.

The application relates to a method for exiting a key path of a nuclear power unit stabilizer overhaul, which comprises the following steps: all heaters in the stabilizer are put into operation to ensure that the stabilizer is maintained in a saturated state; the RRA system is put into operation, so that the primary loop is cooled at a preset cooling rate; the injection amount of the main pump shaft seal is maintained, the charging flow of the primary loop is adjusted to be within a first preset flow range, and the bleeding flow is adjusted to be within a second preset flow range, so that the water level in the stabilizer rises; the spray valve in the stabilizer is adjusted, so that the pressure of the primary loop is maintained at a preset pressure; when the water level of the stabilizer reaches a first preset water level, the bleeding control valve is switched to control the pressure of the primary loop; before the water level of the stabilizer reaches a second preset water level, the opening degree of the spray valve in the stabilizer is adjusted according to the bleeding flow change, until the opening degree of the bleeding control valve is unchanged, and the steam cavity is completely eliminated. The steam cavity elimination process of the stabilizer does not occupy the key path time of the overhaul, so that the key path time of the overhaul is shortened, and the overhaul period is ensured.