703results about How to "Flow adjustable" patented technology

Electrosurgical jaw structures are disclosed that include pressure sensitive variable resistive materials in electrosurgical energy delivery surfaces for welding tissue. The pressure sensitive materials are configured to have megaohm impedance when not engaging tissue and can transform into highly conductive electrodes when compressed under a selected pressure. In a method of the invention, the pressure sensitive variable resistive materials prevent arcing and tissue desiccation when applying bi-polar Rf current to tissue engaged under high compression in an electrosurgical jaw structure.

The invention is a sliding way sleeve abrasion testing machine, which comprises a transmission system, an excitation system, a clamping system and a rack. A first test piece is fixed and clamped on a rotating transmission shaft of the transmission system; a second test piece is arranged corresponding to the first test piece on the clamping system and the transmission system drives the first test piece to rotate around the axis. The rack is provided with at least one sliding platform and the transmission system is arranged on the sliding platform. The excitation system can drive the sliding platform to vibrate up and down to drive the first test piece to impulse the second test piece while rotating. The testing machine overcomes the disadvantage of the prior abrasion testing machine which is incapable of satisfying the requirement on studying the impulse and sliding composite abrasion test between petroleum the drilling rod and the sleeve under the conditions of circulating medium and can perform systematic investigation on the impulse and sliding composite abrasion of various materials of large dimension between the petroleum the drilling rod and the sleeve.

A valve that is adapted to control the flow rate of fluid flow from an implantable pump or other fluid delivery device is provided. In general, the valve includes a multi-lumen member that is adapted to receive fluid-flow therethrough, and a restrictor member that is coupled to the multi-lumen member such that the restrictor member is effective to selectively restrict at least a portion of one or more lumens in the multi-lumen member to thereby adjust the flow rate of fluid flowing through the multi-lumen member. The valve can be built into an implantable drug pump to control fluid flow exiting the pump, or alternatively the valve can disposed within a catheter or otherwise coupled to an outlet port in an implantable drug pump to control the flow rate of fluid exiting the drug pump.

A seed treatment apparatus provides for minimal waste of products for treating seeds, in that it is precisely controllable and automatically adjustable. A volume of seeds to be treated and a flow rate of treatment product for treating the seeds can both be sensed. At least one of the flow rate of the treatment product and the volume of seeds can automatically be adjusted if it is determined that a ratio of the flow rate of treatment product to the volume of seeds is not the same as a predetermined flow rate to volume ratio.

The invention discloses a flocculation washing machine. The flocculation washing machine comprises an outer barrel, a flocculation unit and a filtering unit which are circularly communicated in a sequence through pipelines. The washing machine further comprises an air pump which is respectively communicated with the flocculation unit and the filtering unit. According to the flocculation washing machine, air generated by the air pump is conveyed into a flocculation container through the same air pump so as to generate a mass of bubbles in the water into the flocculation container, thus the water fully flow to enable fully mixing of a flocculant and washed water to achieve flocculation reaction; in addition, the air exhausted by the air pump can be conveyed into a filtering container during washing a filtering unit to generate bubbles to drive water in the filtering container to fully flow as well as generating an instantaneous impact force to act on the surface of a filtering screen, so as to separate dirt attached on the surface of the filtering screen, and as a result, the filtering effect of the filtering screen can be improved. The flocculation washing machine is high in automation degree and simple in structure and saves the production cost.

Systems, methods, devices and techniques can be used in networks including resilient packet ring networks and other types of ring topology networks to adjust the flow of data traffic to MAC clients associated with stations on the network. In one example, adjusted fairness rates and/or messages associated with a network communication protocol are used to reduce traffic destined for a particular station and/or a MAC client associated with that station. In another example, station MAC clients or other components implement virtual destination queues and transmit information associated with the rate at which they receive data. The information and queues are used to reduce traffic destined for a particular station and/or a MAC client associated with that station.

The invention relates to a device and a method for testing pressure of an intelligent substation, and belongs to the technical field of intelligent substations. The device comprises an upper computer, a CPU (central processing unit), an FPGA (field programmable gate array) and an Ethernet physical layer circuit connected in sequence. A testing environment meeting requirements of an IEC (international electro-technical commission) 6185O specification system is provided, normal sampling values (SV) and GOOSE data can be output, normal system running or grid fault can be simulated, background interference flow data in an SV format and background interference flow data in a GOOSE format can also be output, and further, messages such as IP(internet protocol), ARP(address resolution protocol), ICMP(internet control message protocol) and SNMP(simple network management protocol) can be output to form a general background flow. By filtering and analyzing the SV message or the GOOSE message or the MMS message with the specific APPID, potential safety hazards existing in different load-pressure backgrounds of the specific IED device in the network or network switching devices of the whole process level are found, and safety running level of the intelligent substation is increased.

The invention discloses an electric switching valve. The electric switching valve comprises a valve seat and a sliding block which is attached to the upper end of the valve seat in a sealing mode. The sliding block can rotate relative to the valve seat so as to open and close a guiding-out opening of the valve seat. The number of the guiding-out opening is one. A through hole is formed in the sliding block. The flow area of the through hole is smaller than that of the guiding-out opening. In the rotating process of the sliding block, the through hole can be communicated with the guiding-out opening. According to the electric switching valve, the refrigerant flow can be controlled, the energy loss is reduced, and energy consumption of a refrigerating system is reduced.

The invention discloses on-line quenching and plate shape controlling technology for a 12 MnNiVR steel plate, comprising: a blank material cold installation step, a de-scaling step, a rough rolling step, a finish rolling step, a pre-straightening step and an on-line quenching step; wherein in the on-line quenching step, the steel plate enters a ultrafast cooling system with 18 groups of cooling headers, the ultrafast cooling system sets a water flow amount based on the steel plate target thickness, sets an area roller-way speed being 0.7-1.2m/s, sets a roller-way acceleration being 0.003-0.01m/s2, controls a cooling start temperature being 790-740 DEG C, and controlling a cooling final temperature being 180-270 DEG C, and the steel plate departs from the ultrafast cooling system when a cooling final temperature is 180-270 DEG C. The technology provided by the invention raises cooling uniformity, cooling efficiency and once plate shape qualified rate of an on-line quenched steel plate, simplifies a thermal refining technology flow of 12MnNiVR, and finally raises economic benefit of enterprises.

A surgical apparatus 10, used in a phaco procedure, includes a filter assembly 44/44a for near, or complete, elimination of air bubbles in an aspiration line of an aspiration system 38. The apparatus 10 includes a suppressor 110, which, during an aspiration mode of operation, maintains a fluid flow rate at 50 cc/min, and, upon an occlusion breaking free, dynamically decreases the fluid flow rate from a high surge rate to the rate at 50 cc/min. The apparatus 10 includes facility for operating in a reflux mode to direct unrestricted fluid flow through the aspiration line of the aspiration system 38.

A method for controlling an engine having at least one cylinder is provided. The engine includes an intake manifold and an outlet control device for controlling flow from the intake manifold into the cylinder. The method includes generating an operator command. The method further includes controlling flow into the cylinder by changing the outlet control device to control flow into the cylinder based on the operator command.

A pilot-type two-port valve is disclosed having a water hammer preventing mechanism, operative to prevent a water hammer during valve-closing operation, which includes a valve member operative to open or close a valve and a piston driven by pilot fluid for operating the valve member for opening and closing movements. The water hammer preventing mechanism comprises a piston drive chamber, from which fluid is discharged during valve-closing operation, which has an orifice for restricting the flow rate of discharge fluid whereby when the piston moves to a position to allow the valve member to be close to a valve seat, a portion of an discharge flow passage of the piston drive chamber is blocked to restrict the flow rate of the discharge fluid to the flow rate of fluid flowing through the orifice.

Disclosed herein is a debris-flow simulation apparatus having a variable flume. The flume includes a plurality of flume bodies which are connected to each other in the longitudinal direction. The heights of the flume bodies can be easily adjusted, thus varying the angles of inclination of the flume bodies.

The invention discloses a rare cell filter and application thereof. The filter comprises a filter pipe, wherein an opening is formed at one end of the filter pipe; an elastic sealing head sliding along the inner wall of the filter pipe is arranged inside the filter pipe; a syringe sliding along the inner wall of the filter pipe is arranged above the elastic sealing head in a matching manner; the syringe comprises a bobbin with openings at two ends; a barrel cover is arranged above one end of the bobbin; a filter support ring is arranged at the opening of the bobbin below the barrel cover; a micro-hole array filter membrane with covered opening is arranged on the filter support ring; the bobbin, the elastic sealing head and the filter support ring form a recovery pool; the filter membrane is formed by a conical micro-hole and dual layers of micro-hole arrays with different calibers; a sample tube is arranged inside the recovery pool; one end of the sample tube passes through the filter support ring and extends into a filter cavity; the other end of the sample tube passes through the elastic sealing head and extends into a sealed cavity. By adopting the rare cell filter, the problems of poor selectivity and sensitivity for capturing rare cells are solved, and the rare cell filter is applicable to efficient capture, cultivation and analysis of circulating tumor cells and fetal circulation cells in human peripheral blood.

The invention discloses a fluid bed tablet-coating machine, which is characterized by the following: possessing dry air inlet and tank of ventilating port; arranging air flow distribution plate and filter in the tank; arranging at least two big hole area on the same angular of even dispersing on the air flow dispersing plate; setting the perforated ratio of the big hole area at 65%; arranging guide barrel on the upper of the air flow dispersing plate; heading on each big hole area; possessing gap between the floor of the guide barrel and the air flow dispersing plate; arranging a dressing injector; corresponding to each guide barrel; projecting the dressing injector from the central hole of the big hole area of the air flow dispersing plate. This invention possesses high output, which can be fit for big scale industrial production.

The invention relates to a method and device for testing a calibration light source by using an X-ray pulse detector. The device comprises an X-ray pulse generation system and a standard detector calibration system, wherein the X-ray pulse generation system is used for generating X-ray pulse for testing the calibration light source through the standard detector calibration system. The method and device for testing the calibration light source by using the X-ray pulse detector have the advantages of being low in manufacturing cost, exquisite, scientific and reasonable, quantitative in parameter and stable in performance.