Digital broadcasting receiving unit and digital broadcasting system
    34.
    发明授权
    Digital broadcasting receiving unit and digital broadcasting system 失效
    数字广播接收单元和数字广播系统

    公开(公告)号:US08385403B2

    公开(公告)日:2013-02-26

    申请号:US11785406

    申请日:2007-04-17

    IPC分类号: H04N7/12

    CPC分类号: H04N21/4305

    摘要: This invention provides a digital broadcasting receiving unit capable of achieving synchronization of time information between a base station and a receiving unit with reference clock without use of a crystal oscillator (VCXO) having a variable frequency. The crystal oscillator oscillates a clock of a predetermined fixed frequency. A variable digital dividing circuit divides a fixed frequency by a division ratio so as to change the division ratio. A system decoder detects reference time information from the base station. A reference counter generates time information of a receiving unit. A phase comparator detects a difference between reference time information and time information. A division ratio control circuit controls the change of the division ratio based on the difference. The reference counter generates time information based on a clock having a frequency obtained by dividing by the variable digital dividing circuit and feeds back time information to the phase comparator.

    摘要翻译: 本发明提供一种数字广播接收单元,其能够在不使用具有可变频率的晶体振荡器(VCXO)的基准时钟的情况下实现基站与接收单元之间的时间信息的同步。 晶体振荡器振荡预定固定频率的时钟。 可变数字分频电路将固定频率除以分频比以改变分频比。 系统解码器从基站检测参考时间信息。 参考计数器产生接收单元的时间信息。 相位比较器检测参考时间信息和时间信息之间的差异。 分频比控制电路基于该差异来控制分频比的变化。 参考计数器基于具有通过可变数字分频电路除以获得的频率的时钟产生时间信息,并将时间信息反馈到相位比较器。

    Gas turbine combustor, combustion method of the gas turbine combustor, and method of remodeling a gas turbine combustor
    36.
    发明授权
    Gas turbine combustor, combustion method of the gas turbine combustor, and method of remodeling a gas turbine combustor 有权
    燃气轮机燃烧器,燃气轮机燃烧器的燃烧方法,燃气轮机燃烧器的重构方法

    公开(公告)号:US07143583B2

    公开(公告)日:2006-12-05

    申请号:US10382500

    申请日:2003-03-07

    IPC分类号: F02C3/00 F23R3/18

    摘要: A gas turbine combustor comprises a premixed combustion burner disposed on the periphery of a pilot burner, an approximately cylindrical combustor liner disposed on the downstream side of the premixed combustion burner, which defines a combustion chamber in the liner. The gas turbine combustor is characterized by further comprising flame stabilizers radially disposed at the exit of the premixed combustion burner, and a fuel injection means with which the pilot burner is provided injects at least one of gas fuel and liquid fuel, in which a plurality of air nozzles are provided which are located outside the pilot burner and inside the premixed combustion burner, and which spout out air into the combustion chamber. Adequate combustion can be accomplished with a combustor which is capable of using gas fuel and liquid fuel, and at the same time, NOx can be reduced.

    摘要翻译: 燃气轮机燃烧器包括设置在引燃燃烧器的周边上的预混合燃烧器,设置在预混合燃烧器的下游侧的近似圆柱形的燃烧器衬套,其限定衬套中的燃烧室。 燃气轮机燃烧器的特征在于还包括径向设置在预混合燃烧器的出口处的火焰稳定器,以及燃料喷射装置,其中提供引燃燃烧器喷射气体燃料和液体燃料中的至少一种,其中多个 设置有位于引燃燃烧器外部和预混燃烧器内部的空气喷嘴,并且将空气喷射到燃烧室中。 能够使用能够使用气体燃料和液体燃料的燃烧器来实现充分的燃烧,并且同时可以减少NOx。

    Gas turbine combustor and gas turbine
    39.
    发明授权
    Gas turbine combustor and gas turbine 失效
    燃气轮机燃气轮机和燃气轮机

    公开(公告)号:US5660045A

    公开(公告)日:1997-08-26

    申请号:US502461

    申请日:1995-07-14

    摘要: The present invention has an object to provide a gas turbine combustor which is able to effect stable combustion in a wide range of fuel flow rate. A burner 1 is provided with fuel nozzles 31 and 32. When a fuel flow rate is small, diffusion flame is formed with fuel supplied from the nozzle 31 with a ring-shaped flame stabilizer 11. Next, fuel is supplied from the nozzle 32 to mix with air, reach to the flame stabilizer 11 and be held by the diffusion flame already formed, whereby stable premixed flames are formed in the flame stabilizer 11 from a range of low fuel air ratio. Further, when flame is propagated from the burner 1 to the burner 2, a fuel air ratio at the outer periphery side of the burner 1 is locally raised by the fuel supplied from the nozzle 31, whereby the combustion stability can be raised in a wide range of fuel flow rate and propagation of flame to adjacent burners becomes easy.

    摘要翻译: 本发明的目的是提供一种能够在宽范围的燃料流量下实现稳定燃烧的燃气轮机燃烧器。 燃烧器1设置有燃料喷嘴31和32.当燃料流量较小时,由具有环形火焰稳定器11的喷嘴31供应的燃料形成扩散火焰。接下来,从喷嘴32供给燃料 与空气混合,到达火焰稳定器11并被已经形成的扩散火焰保持,从而在低燃料空气比范围内在火焰稳定器11中形成稳定的预混火焰。 此外,当火焰从燃烧器1传播到燃烧器2时,燃烧器1的外周侧的燃料空气比通过从喷嘴31供给的燃料局部地升高,从而可以在宽的范围内提高燃烧稳定性 燃料流量范围和火焰传播到相邻燃烧器变得容易。