155results about How to "Reduce flow pressure" patented technology

A fuel / air mixing disk for use in a fuel / air mixing combustor assembly is provided. The disk includes a first face, a second face, and at least one fuel plenum disposed therebetween. A plurality of fuel / air mixing tubes extend through the pre-mixing disk, each mixing tube including an outer tube wall extending axially along a tube axis and in fluid communication with the at least one fuel plenum. At least a portion of the plurality of fuel / air mixing tubes further includes at least one fuel injection hole have a fuel injection hole diameter extending through said outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.

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.

A fuel / air mixing tube for use in a fuel / air mixing tube bundle is provided. The fuel / air mixing tube includes an outer tube wall extending axially along a tube axis between an inlet end and an exit end, the outer tube wall having a thickness extending between an inner tube surface having a inner diameter and an outer tube surface having an outer tube diameter. The tube further includes at least one fuel injection hole having a fuel injection hole diameter extending through the outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.

A fuel / air mixing disk for use in a fuel / air mixing combustor assembly is provided. The disk includes a first face, a second face, and at least one fuel plenum disposed therebetween. A plurality of fuel / air mixing tubes extend through the pre-mixing disk, each mixing tube including an outer tube wall extending axially along a tube axis and in fluid communication with the at least one fuel plenum. At least a portion of the plurality of fuel / air mixing tubes further includes at least one fuel injection hole have a fuel injection hole diameter extending through said outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.

The invention provides a network having a wireless local area network, which comprises a core network, an access network and a terminal. The access network comprises a wireless cellular network and a wireless local area network, wherein a plurality of wireless hot spots are arranged in the wireless local area network. The network further comprises a hot spot information map server which is connected to the core network. The invention further provides a method for accessing the terminal to the wireless local area network. The invention has the advantages that the terminal can acquire the hot spot information in the nearby wireless local area network due to the hot spot information map server arranged in the network so as to guide or attract user to perform the operations such as surfing the internet, downloading, and the like, after accessing the wireless local area network hot spot in the double covered area of wireless local area network and wireless cellular network, therefore efficiently decreasing the load and flow pressure on wireless cellular network equipment like base station. The invention further provides a method for accessing the terminal to the wireless local area network so as to provide various selection schemes to the terminal accessing.

A fuel / air mixing tube for use in a fuel / air mixing tube bundle is provided. The fuel / air mixing tube includes an outer tube wall extending axially along a tube axis between an inlet end and an exit end, the outer tube wall having a thickness extending between an inner tube surface having a inner diameter and an outer tube surface having an outer tube diameter. The tube further includes at least one fuel injection hole having a fuel injection hole diameter extending through the outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.

The invention discloses an independent external-mounting maintenance-free multi-stage oil and gas separator assembly. The oil and gas separator assembly is characterized in that a first cyclone separation cavity consists of an oil and gas separator outer shell and an oil and gas separator body shell; a second dispersing separation cavity consists of the oil and gas separator body shell, an oil and gas separator cover and the outer walls of three refine separation conical pipes which are distributed on the circumference at 90 degrees; a third refine cyclone separation cavity consists of the three refine separation conical pipes which are distributed on the circumference at 90 degrees and a central pipe; a fourth reinforcement cyclone separation cavity consists of the three refine separation conical pipes which are distributed on the circumference at 90 degrees, a central pipe, and a cyclone blade; a fifth refine cyclone separation cavity consists of a small refine separation conical pipe arranged in the center of the circumference; a sixth compact and dispersing safety separation cavity consists of a safety valve cavity and a safety valve; an eighth separation cavity consists of a respirator compact plate and a safety damping net; a flow pressure adjusting valve consists of a flow pressure adjusting diaphragm in a respirator and a flow pressure adjusting spring; any installation mechanism consists of an installation support and variable air inlet and outlet pipe included angles; and an oil return cavity consists of a separation conical pipe bottom and an independent separator shell.

The invention discloses a service fuse method based on network security, which comprises the following steps: obtaining flow data in a preset time period of a system; comparing flow data in a preset period of time of the system with a corresponding flow data threshold in the preset period of time; acquiring access requests sent by all user terminal accounts; when the flow data in the preset time period of the system is larger than the corresponding flow data threshold value in the preset time period, the system responds to the access request sent by the user terminal account according to the preset account list to perform service fuse and flow control on the system. according to the access request sent by the account which contributes to the system service according to the preset account list, Access requests sent by accounts with little or no contribution to system services are fused to realize service fuse and flow control mechanism, which improves the effective access rate of the system and avoids the situation that the service is unavailable or even the whole line crashes.

The invention provides a multicast service management device and a corresponding forwarding device. The forwarding device comprises a service control unit, an access port and a service forwarding unit, wherein the service control unit receives a service scheduling instruction sent by a virtual machine (VM), obtains a multicast address used by a coding terminal carried by the instruction, an IP address of the coding terminal and an IP address of a decoding terminal, determines an access port of a branch containing the coding terminal according to the IP address of the coding terminal, and sends an IGMP Report message from the access port corresponding to the coding terminal to request accession of a corresponding multicast group so as to obtain a multicast stream sent by the coding terminal; the access port determines the branch containing the decoding terminal according to the IP address of the decoding terminal, generates a corresponding multicast forwarding entry, and adds the entry into a multicast forwarding table; and the service forwarding unit is used for querying the multicast forwarding table and forwarding the multicast stream to the decoding terminal when receiving the multicast stream sent by the coding terminal. The management device and the forwarding device effectively solve the problem of flooding access links of multicast traffic to headquarters.

A system and method for diagnosing the state of a fuel cell stack are provided. The method includes simultaneously applying currents having respective first and second frequencies to a fuel cell stack and computing Fourier transforms of output currents and voltages from the fuel cell stack based on the applied currents. A real part of a first frequency impedance and an imaginary part of a second frequency impedance are calculated using amplitudes and phases of currents and voltages having the first frequency and the second frequency among the computed output currents and voltages. Further, a state of the fuel cell stack is determined by magnitude of the calculated real part of the first frequency impedance and by magnitude of the calculated imaginary part of the second frequency impedance.

Disclosed is a concentrator solar cell which guides concentrated sunlight to a solar cell. The concentrator solar cell has: a substrate which has a solar cell mounted thereon; a light guide member which is positioned in the top part of the solar cell in such a way that the lower end surface thereof faces the solar cell; and a support member which is provided across the upper part of the light guide member and is provided in a standing state on the substrate. The concentrator solar cell is a hermetically sealed structure due to the substrate, the light guide member, and the support member.

Disclosed are a service transmission path determination method, device and system, the method comprising: receiving a service chaining object sent by a client based on the extended path computation element communication protocol (PCEP), the service chaining object comprising service processing capacity requiring provision by a service node during service transmission on a network; according to the service processing capacity provided by the service node in the prestored service node property information, determining at least one service node matching the service chaining object on the network; and generating a service transmission path based on the determined service node to transmit the service initiated by the client. The present invention can effectively solve the problems of high traffic load and low traffic utilization on a service node deployed on a network.

The embodiment of the invention provides a live broadcast stream transmission method, a device, related equipment and a system. The method executed by an edge node comprises the steps: receiving a live broadcast stream request sent by a playing user, the live broadcast stream request being at least used for indicating target live broadcast recognition information; detecting whether the target livebroadcast recognition information is matched with live broadcast recognition information recorded by the edge node or not, wherein the edge node records live broadcast recognition information of a live broadcast stream pushed by an anchor user covered by the edge node; when the target live broadcast recognition information is matched with live broadcast recognition information recorded by the edge node, obtaining a target live broadcast stream corresponding to the target live broadcast recognition information from live broadcast streams pushed by an anchor user; and sending the target live broadcast stream to the playing user. The embodiment of the invention can improve the transmission efficiency and the transmission reliability of the live broadcast stream.

The embodiment of the invention discloses a network resource access method and device. The method comprises the following steps of:enabling a client to registrate a network agent program, calling a network agent program to obtain a current network request submitted by the client; selecting a target resource node meeting the connection requirement from at least one resource node recorded by the network agent program, obtaining network resources from the target resource node according to the current network request. The function of selecting the node meeting the connection requirement from the plurality of resource nodes is realized on the client by utilizing the network agent program; the limitation that the resource node can be inquired again only after the cache of the domain name is expired in a network request is overcome, the delay of switching the resource node is reduced, node switching is directly realized on the client, and the client can still be connected to the resource nodewithout being influenced by attack when a website is attacked by DDOS.

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.