153results about How to "Reduce flow pressure" patented technology

Fracturing tools for use in oil and gas wells are disclosed. The fracturing tools have a run-in position and two operational positions. A sleeve disposed in the bore of the fracturing tool comprises a sleeve port alignable with a first port in the housing of the frac tool, i.e., the first operational position, during fracturing operations. A second port having a restriction member is disposed in the housing and is closed by the sleeve during fracturing operations. After fracturing operations are completed, a return member in the frac tool moves the sleeve from the first operational position to a second operational position for production operations. In this second operational position, the first port is closed and the sleeve port is aligned with the second port. Movement of the sleeve from the first operational position to the second operational position is performed without the need for an additional well intervention step.

The utility model discloses a method for controlling server flow, which comprises the following steps: a redirector is used to periodically capture and store the current flow value of the server network card; a squid program module is started to receive server access requests initiated by users and transmit user data to the redirector. When the redirector judges that the current flow reaches or exceeds the threshold flow, the user requests can be redirected to the backup server for processing. The utility model also discloses a corresponding redirector and a server flow control systems. The utility model can smoothly shift the user accesses to the backup server when the server flow reaches the preset threshold value.

The invention provides a network monitor method, system and content distribution network. The method comprises the following steps: receiving the monitoring content from the monitoring front end by the content distribution network arranged between the monitoring front end and the monitoring terminal; distributing the monitoring content to the monitoring terminal; forming the multicast of the application layer in the carrying network between the monitoring front end and the monitoring terminal; transferring the monitoring content with the sharing bandwidth between the monitoring front end and the content distribution network and at the interior of the content distribution network; sending the monitoring content to the monitoring terminal by the content distribution network. The invention avoids occupying the independent bandwidth between every monitoring terminal and the monitoring front end, which saves the network resource, and reduces the flow pressure.

The invention relates to a network flow cache method and a network flow cache system based on active guidance. The method comprises the following steps of: 101) analyzing a protocol in network flow, and caching the network flow meeting a requirement to a local cache server; and 102) actively guiding a user to the local cache server by one of the following active guidance modes according to a network protocol used by a user request service, and cutting off linkage between an internal network user and an external network server, wherein by the first mode, the user is guided to the local cache server by adopting a redirection guide mechanism; by the second mode, the user is guided to the local cache server by an intelligent domain name server (DNS) guide method; by the third mode, the user is guided to the local cache server by a false message guide method; and by the fourth mode, the user is guided to the local cache server by a distorted message guide method. The system supports multiple active guidance modes; and after the modes are combined, the network flow can be guided to the cache system for service to the maximum extent.

A microfluidic filtration unit for trapping particles of a predetermined nominal size present in a fluid is provided. The unit comprises a fluid chamber connected to an inlet for introducing the fluid to be filtered and an outlet for discharging filtered fluid, a filtration barrier arranged within the fluid chamber, said filtration barrier comprising a plurality of pillars arranged substantially perpendicular to the path of fluid flow when fluid is introduced into the fluid chamber, said pillars being aligned to form at least one row extending across said path of fluid flow, wherein each of said at least one row of pillars in the filtration barrier comprises at least one fine filtration section comprising a group of pillars that are spaced apart to prevent particles to be filtered from the fluid from moving between adjacent pillars, and at least one coarse filtration section comprising a group of pillars that are spaced apart to permit the movement of particles between adjacent pillars.

The invention discloses a miniaturized loop heat pipe which comprises an evaporator, a liquid pool and a condenser, wherein the liquid pool and the condenser are connected with the evaporator into anintegral, and the evaporator, the liquid pool and the condenser are connected together through a fine thin wall pipe made of stainless steel to form a loop. When the miniaturized loop heat pipe is applied to the environment lower than 200K, an air reservoir which is connected to a steam pipeline is used for reducing the storage pressure of the miniaturized loop heat pipe in the normal temperatureenvironment. The invention is mainly characterized in that a liquid absorbing core in the evaporator is redesigned; a metal mesh is used as a secondary liquid absorbing core; and a circumferential thread channel is carved on the surface of the main liquid absorbing core to enable the liquid to be distributed uniformly, and an axial rectangular channel is carved to be used as a flow passage of steam. A new condenser is designed, and thread fins, rectangular fins or saw teeth are additionally arranged on the flow passage of working substances to be used as a condensation strengthening measure, thereby improving the condensation efficiency and reducing the size and the weight of the condenser.

The present invention is multiple vortex dust collector in duster. The multiple vortex dust collector includes cylindrical vortex body with partitioning wall to separate it two parts including the lower or first part and the upper or the second part. The first vortex part is provided with sucking pipe, pollutant exhaust hole, the first dust collecting chamber with exhaust port in the center of the partitioning wall, and leading pipe to the second vortex part. The second vortex part has central exhaust pipe with filtering part and sucking force generator, pollutant exhaust hole, and the second dust collecting chamber. The present invention has basically the same pollutant and air sucking direction and vortex and exhaust direction, reduced conflict between the ascending airflow and vortex, reduced friction resistance, less pressure loss, less noise and less pollutant jamming in filtering part.

The disclosure provides systems and methods for regulating and distributing cooling fluid through a plurality of heat sinks, such as cold plates, using a flow regulator, which sets the total flow rate, in combination with one or more individual orifices that allow further flow distribution as required by individual cold plates, despite flow variations upstream of the orifices. An orifice can be coupled to an orifice holder, which includes a body to support the orifice, and which may be coupled (directly or indirectly) to an inlet of the cold plate. Alternative manners of coupling orifices in the fluid flow besides an orifice holder can be employed. Generally, the flow regulator(s) is coupled with a plurality of orifices and conduits through which the cooling fluid flows. Related system components can be assembled as a module for installation into a cooling system that includes other system components such as a pump, compressor or other pressure sources for the cooling fluid.

A turbine unit (11) adapted to be placed in a flowing fluid. The turbine unit (11) comprises a first turbine set (13) and a second turbine set (15) mounted within a passage (21) of a housing (19). The first turbine blade set (13) and a second turbine blade set (15) are set in opposed relation such that in operation a region between the two turbine blade sets (13, 15) has a lower pressure than the fluid pressure at an opening of the passage (21). The turbine unit (11) being used to generate power. The turbine units (FIGS. 8 to 11) can be abutted with each other such that they define a passage and each turbine unit comprises a driving turbine blade set before fluid passes to a pumping turbine blade set.

The invention discloses a data request processing method and device, a storage medium and an electronic device. The method comprises the following steps: receiving a target data request; writing the target data request into a first message queue, wherein the first message queue comprises data requests to be sent to a data source server, the data requests in the first message queue are set to be taken out from the first message queue according to a sending period and sent to the data source server, and the number of the data requests taken out from the first message queue in each sending period is the same; and when the target sending period arrives, taking out a plurality of data requests including the target data request from the first message queue, and sending the plurality of data requests including the target data request to a data source server so as to inform the data source server to obtain the target data requested by the plurality of data requests.

The invention provides a dynamic path optimization method aiming at a layered flow complicated network. The dynamic path optimization method comprises the following steps: step 1: preparing a networkand pre-processing; step 2: determining a network optimization target; step 3: classifying layered nodes: primarily determining rough positions of the layered nodes, wherein a basic thought is that (1) the layered nodes need to be communicated with peripheral nodes as much as possible; (2) the layered nodes need to preferably select a congested space with dense nodes or relatively great flow to obtain node classes which are classified again, and comprise node coordinates, node flow and node congestion coefficients; step 4: after determining the quantity and positions of the layered nodes, optimizing the layered nodes so as to determine an optimal network path structure.

The present invention relates to a plug and valve integrated cone valve pump with combined type movable and fixed three cylinders and two spiral centralizers, which is applied to suction working conditions in highly deviated well sections. It comprises three pump cylinders, which are combined type including two fixed cylinders and a dynamic cylinder, two centralizers, which are combined type including a dynamic spiral centralizer and fixed spiral centralizer, a fixed cone valve, a cylinder and plug integrated springing fixed cone valve, a fixed plunger and a movable guide rod cone valve to solve the problems such as stuck pump, eccentric wear between plunger and pump cylinder and valve leakage.

The invention discloses a mobile network edge cooperation cache model construction method based on machine learning. The method comprises the steps of 1, establishing a network training model according to content request data sent by a user; 2, enabling a judgement routing module in the network training model to carry out base station identification on content request data sent by a user accordingto an adaptive selection action requirement; step 3, enabling an updating module in the network training model to perform cache replacement on the local base station according to replacement action requirements; and 4, repeating the steps 1-3 until the network training model is stable, so that the user access time delay can be remarkably reduced, the cache hit rate is improved, and the backbone network flow pressure is relieved.

The invention discloses a relay multicast method based on a Darwin streaming media sever. The method comprises the steps of dividing the Darwin streaming media sever into two parts for deployment. Media data transmission can be distributed on different hardware servers relatively reasonably. Media data is provided for the servers with different functions for processing. Moreover, switch hardware devices in a video private network are utilized fully. Under the condition of not increasing uplink and downlink traffic of server network cards, one way of code streams are relayed through multiple ways, network bandwidths and network traffic are greatly mitigated, a deployment mode is flexible, and the scene adaptability is high.

A method for controlling continuous positive airway pressure includes the steps of building up air flow pressure to an initial air flow pressure, increasing the initial air flow pressure to a detection air flow pressure, detecting consistency between the initial air flow pressure and the detection air flow pressure, checking to see if the initial time frame for consistency detection is due, decreasing air flow pressure from the detection air flow pressure to an intermittent air flow pressure and increasing the intermittent air flow pressure to a treatment air flow pressure.

The invention provides an electric power station building environment monitoring system and method. The electric power station building environment monitoring system comprises a 5G edge computing gateway, an alarm system, an inspection system, a power distribution room monitoring main station and a plurality of environment monitoring systems. Power station building environment monitoring data areobtained through a plurality of environment monitoring systems, then a 5G edge computing gateway is used for computing and analyzing the data to obtain an edge computing result, the edge computing result is sent to a power distribution room monitoring master station, and if an abnormal value exists in the edge computing result, the 5G edge computing gateway sends an alarm signal to the alarm system and sends an inspection instruction to the inspection system, and the power distribution room monitoring master station sends a corresponding operation instruction to the mobile terminal according to the edge computing result. The system is comprehensive in monitoring and wide in coverage; the calculation efficiency is high, flow pressure can be relieved, and cost is saved; the area where abnormal data is generated can be timely and rapidly confirmed, the point location where the abnormal data is generated is further confirmed, and dangerous case elimination is accelerated.