17results about How to "Keep the pressure constant" patented technology

The invention relates to the field of cardiovascular intervention postoperative nursing equipment, and discloses a cardiovascular intervention postoperative puncture point intelligent hemostasis and monitoring robot which comprises a shell, a fixed pressing frame is movably arranged at the inner bottom of the shell, a flexible pressing pad is fixedly installed at the bottom end of the fixed pressing frame, and a glass pressing piece is fixedly installed in the middle of the flexible pressing pad. A fixing frame is arranged in the middle of the interior of the shell, rotating frames are movably installed at the two ends of the fixing frame, first cavities are formed in the two sides of the interior of the fixing frame, spring pieces are fixedly installed on the two sides of the interior of each first cavity, and the tail ends of the spring pieces extend into the rotating frames on the corresponding sides. The system can accurately and constantly press a puncture point for hemostasis, can visually monitor the bleeding state in real time, can perform intelligent gradient pressure reduction and millisecond-level emergency pressurization, is high in adaptability and convenient to operate, can reduce postoperative bleeding risks and medical care intensity, and guarantees the safety of a patient.

The utility model provides an automatic feeding and discharging door of an under-pressure grain steaming pot, which belongs to the technical field of wine brewing processing equipment and comprises a supporting seat arranged on the grain steaming pot and a connecting seat rotationally connected with the supporting seat. The sealing door assembly is fixedly arranged on the connecting seat and rotates under the support of the connecting seat; the feeding and discharging auxiliary assembly is arranged in the sealing door assembly and used for assisting feeding and discharging when the sealing door assembly and the grain steaming pot are sealed, and it is guaranteed that the pressure in the grain steaming pot is constant; the locking assembly is arranged on the sealing door assembly and used for locking the sealing door assembly and the grain steaming pot. Adjustment treatment is carried out during feeding through the feeding and discharging auxiliary assembly, so that feeding and discharging in the grain steaming process can ensure that the pressure in the grain steaming pot is kept constant, and the quality of steamed grains is not affected.

The present invention relates to the technical field of carbon fiber bracket production and molding, specifically to a carbon fiber bracket production and molding equipment and manufacturing method, including a mounting support and a swing support, wherein rotating pins are fixedly connected to both sides of the swing support, and the swing support is rotatably mounted on the mounting support through the rotating pins. The carbon fiber bracket production and molding equipment realizes the precise paving and tight fitting of different curved UAV brackets through flexible swing amplitude control and prepreg laying roller design. The equipment can change the paving angle at will to adapt to bracket surfaces with different curvatures, ensure that the carbon fiber prepreg paving is accurately attached to the surface of the UAV bracket, and improve the molding effect. At the same time, the setting of the elastic rolling assembly is adopted, which not only satisfies the tight fit between the material strip and the bracket, but also can synchronously adapt to different curved surfaces and maintain a constant pressure between the paving and the bracket, further improving the molding quality and effect of the carbon fiber bracket.

The utility model relates to the technical field of slitter edge winding equipment, in particular to a multi-slitter edge synchronous winding device which comprises a base, a rack and a control cabinet, a motor is arranged in the control cabinet, and a floating roller, a fixed guide roller, a sliding rail, a rubber pressing roller, a winding shaft and a winding arm sliding rail are arranged on the rack. The motor drives the rubber pressing roller to rotate; a movable guide roller is mounted on the sliding track; two winding arms are arranged on the winding arm sliding rail, the other ends of the two winding arms are connected with the two ends of the winding shaft respectively, and a winding arm moving air cylinder and a winding arm swing air cylinder are arranged on the two winding arms respectively; the rubber pressing roller abuts against the surfaces of the winding shaft and the slitter edge roll of the winding shaft. The rubber pressing roller is attached to the winding pipe core, the function that one pipe core collects multiple sets of slitter edges at the same time is achieved, the multiple slitter edges do not need to be collected independently, the working efficiency is improved, meanwhile, the tension control unit is arranged, the tension value of the slitter edges can be adjusted, and it is ensured that the trimming effect is good.

The utility model discloses a nitrogen making machine adsorption tower with a carbon molecular sieve protection structure, which belongs to the technical field of nitrogen making machine adsorption towers and comprises an adsorption tower body, a gas inlet pipeline is arranged at the bottom end of the adsorption tower body, a nitrogen outlet pipe is arranged at the top end of the adsorption tower body, and an oxygen outlet pipe is arranged in the middle of the adsorption tower body. The gas inlet pipeline, the oxygen outlet pipe and the nitrogen outlet pipe are respectively provided with a control valve. The device further comprises a lower sliding plate, a carbon molecular sieve and a protection structure. According to the adsorption tower, entering air is uniform in the adsorption tower body, the impact on the carbon molecular sieve is reduced, meanwhile, the carbon molecular sieve is pressed by the pressing mechanism, the constant pressure of the carbon molecular sieve is kept, and the carbon molecular sieve is prevented from being greatly abraded during operation, so that the carbon molecular sieve can be stably operated, and the service life of the adsorption tower is prolonged. The effect of reducing pulverization loss caused by mutual abrasion of the carbon molecular sieves is achieved, and reduction of the nitrogen production amount is avoided.

The embodiment of the utility model provides a vehicle heat exchange system and a vehicle, the vehicle heat exchange system comprises a refrigerant flow path, a first heat exchange flow path, a compressor, a first heat exchanger, a vehicle power source heat exchanger, an upstream throttling element and a downstream throttling element, the first heat exchanger comprises a first channel and a second channel which can exchange heat with each other, the vehicle power source heat exchanger and the second channel are arranged in a first heat exchange flow path in series, and the upstream throttling element, the first channel and the downstream throttling element are sequentially arranged in a refrigerant flow path in series and located between an outlet of the compressor and an inlet of the compressor. The opening degree of the upstream throttling element can be increased to reduce the throttling and pressure reducing effect, the downstream throttling element can be used for throttling and pressure reducing to ensure that the pressure of the flowing-out refrigerant medium is kept constant, and the situation that the refrigerant medium cannot generate enough heat exchange temperature difference due to sudden pressure drop after passing through the upstream throttling element can be reduced; and more heat of the refrigerant medium in the first channel can be transferred to the second channel.

The utility model relates to water tank technical field especially relates to an expansion type water tank. Its technical scheme includes the box, the water inlet of being located at the top of box, the water outlet of being located at the bottom of box, still includes the fixed installation in the telescopic expansion box of box, installs the constant pressure module of expansion constant pressure to the expansion box of both sides of box, the constant pressure module includes the transmission case and pressure chamber that intercommunication, the pressure chamber and transmission case fill liquid, the transmission case in sliding installation has with expansion fixed connection of sealing plate of box. The utility model adopts constant pressure module and can provide stable unchangeable system pressure, compares with nonlinear air bag, avoids pressure fluctuation, makes system pressure keep constant on the set operating point, no matter how much expansion water volume is, avoids the risk that air bag pressure sharply climbs in high pressure area, also eliminates the hidden danger that low pressure area buffer is insufficient, improves system pressure stability greatly, can realize effective volume utilization more.

The invention discloses a body-in-white chain type force control wiping device which comprises an annular brush and a driving assembly driving the brush to rotate, the brush comprises an annular chain connected with the driving assembly in a meshed mode and a brush assembly arranged on the chain, and the driving assembly comprises a driving chain wheel meshed with the chain; a force control floating device controlled by a force control motor is arranged in the working area in the annular area of the brush and used for adjusting pressure according to a real-time pressure monitoring signal of the sensor, so that the pressure between the workpiece and the brush is kept constant. The chain is matched with the brush assembly, so that the defects of secondary pollution, speed loss and the like caused by scrap falling due to abrasion of a belt-type brush are overcome; and the wiping effect of the workpiece can be effectively improved through the force control floating device.

A battery module according to one embodiment of the present invention comprises: a lower case for accommodating a plurality of battery cells; an upper case covering the lower case and provided with an opening formed so as to discharge gas generated when the internal pressure of the battery cells is equal to or greater than a certain value; and an insulating part coupled to one surface of the inner side of the upper case so as to cover the opening, the insulating part being provided with insulating paper, the insulating paper containing: 55-70 parts by weight of kaolin (Kaolin); 13 parts by weight to 22 parts by weight of 1, 4-phthaloyl dichloride (C8H4Cl2O2); and 6 to 11 parts by weight of aluminum hydroxide (Al (OH) 3).

The invention relates to an oil-gas separation online measurement system and a working method thereof, the oil-gas separation online measurement system comprises an oil path unit, a degassing unit, a gas path unit and a measurement unit, and the working method specifically comprises the following steps: S1, bidirectionally cleaning an oil path; s2, blowing and washing a gas path in two directions; s3, quantifying the oil sample; s4, negative pressure extraction and negative pressure exhaust are carried out; s5, circulating the oil sample; s6, carrying out constant-pressure degassing; s7, compressing the gas; and S8, performing constant-temperature measurement. Through the step of arranging a two-way cleaning oil way and a two-way purging gas way before measurement, thorough cleaning of the oil way and the gas way before measurement is effectively guaranteed, in the oil sample extraction, oil-gas separation and gas sample measurement process, the pressure and temperature of oil and gas are kept constant, and the degassing efficiency and consistency are high. A gas path sensor is arranged in the gas path unit, and a constant temperature device is arranged in the measuring unit, so that the temperature and the pressure of gas in the measuring unit are ensured to be the same during each measurement, system errors caused by environmental factors are eliminated, and the accuracy of system measurement is further ensured.

The utility model discloses a winding and unwinding structure for clothing printing, which comprises a main body component, a winding and unwinding component and a winding and unwinding component, the drying assembly comprises a drying frame, a drying fan, a first mounting hole and a first rotating roller; the drying frame is fixed to the middle of the outer surface of the winding and unwinding shell, the drying fan is mounted on the upper surface of the drying frame, the first mounting hole is formed in one side of the outer surface of the drying frame, the first rotating roller is rotatably mounted in the first mounting hole, a second mounting hole is formed in the other side of the outer surface of the drying frame, and the second rotating roller is rotatably mounted in the second mounting hole. A mounting plate is fixed to one side of the outer surface of the drying frame. The printing device has the advantages that the completeness of printed patterns is improved, the completeness and the wear resistance of the dried patterns are improved, the quality of final products is higher, the requirements of the market for high-quality printed products are met, the drying time of the whole printing is shortened, the production process is accelerated, and the production efficiency is improved.

The present invention belongs to the technical field of pipeline weld detection, and discloses an online detection device for thick-walled pipeline weld defects, including a workbench, a hydraulic cylinder 1 and a support ring, the telescopic end of the hydraulic cylinder 1 is installed with a work frame, the internal rotation of the work frame is installed with two groups of transport rollers, and a motor 1 is installed, and the two groups of transport rollers are connected to the motor 1 through a gear set. The device enters the sensing area between the micro gratings upward through the baffle bar, and automatically shuts down the hydraulic cylinder 3 through the controller to maintain the constant compression distance of the spring 2 by the limit ring. When the ultrasonic probe faces workpieces of different sizes, it only needs to adjust the telescopic stroke of the hydraulic cylinder 3 and move the baffle bar to the specified position to keep the compression stroke of the spring 2 unchanged, so that the pressure between the ultrasonic probe and the workpiece surface is constant, avoiding excessive pressure and causing excessive wear on the bottom surface of the ultrasonic probe, thereby extending the service life of the device.

The invention relates to a battery housing (3) for a traction battery (1), comprising at least two housing parts (4, 5) surrounding an inner volume, a connecting element (6) for connecting the housing parts (4, 5) in an interface region, and a sealing element (7) for sealing the interface. The battery housing according to the invention is characterized in that at least one detection volume (8), which is sealed against the interior volume and against the surroundings, is formed in the interface region by means of a sealing element (7) and has at least one detection connection (11), an electrically conductive and gas-permeable elastic element (9) being arranged in the detection volume (8), said elastic element (9) being arranged in the non-stressed state. The width of the electrically conductive and gas-permeable elastic element is transverse to the direction of extension of the detection volume (8) and is greater than the cross-section thereof. According to the method of the invention, a pressure is applied to the detection volume (8) and the tightness is detected on the basis of a pressure-time curve.

The utility model relates to a five-direction key press-fit device, which comprises a machine table, a jig plate and a press-fit plate, the jig plate is fixed on the table top of the machine table, a plurality of assembly positions arranged at intervals are arranged on the jig plate, and each assembly position comprises a key cap positioning groove arranged at the bottom and a key plate positioning groove arranged above the key cap positioning groove; the pressing plate is located over the jig plate and is driven by an air cylinder fixed to the upper portion of the machine table to ascend and descend. Three vertically-arranged pressing rods corresponding to the assembling positions are fixed to the bottom of the pressing plate, one pressing rod is arranged corresponding to the center of the key cap positioning groove, and the other two pressing rods are correspondingly arranged at the two ends of the key plate positioning groove respectively. By the adoption of the structure, the pressing pressure borne by the key board is kept constant, and therefore the assembling reliability of the key cap and the key board is effectively improved.

The invention discloses a pump pressure test device for a cylinder sleeve, belongs to the technical field of pump pressure tests, is used for a water pressure sealing test of a cylinder sleeve unit, and further comprises a first loop, a second loop, a third loop and a fourth loop, a second stop valve, a pressure reducing valve, a first pressure regulating pipeline and a second pressure regulating pipeline are arranged on the second loop; the common rail pipe is communicated with a plurality of branches; according to the scheme, the hydraulic sealing test can be performed on a plurality of cylinder sleeve units simultaneously, the labor intensity is effectively reduced, and the test efficiency is remarkably improved; by setting a relatively high and stable constant pressure of the main loop on the second loop and then setting the water pressure of each branch on the common rail pipe, units with different water pressures can be tested, the water pressure of each branch on the common rail pipe and the water pressure fluctuation in each cylinder sleeve unit can be reduced, and the test efficiency is improved. And the test effect of each cylinder sleeve unit can be greatly improved.