CN103341248A - 柔性干式喷洒装置 - Google Patents

柔性干式喷洒装置 Download PDF

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CN103341248A
CN103341248A CN2013100427801A CN201310042780A CN103341248A CN 103341248 A CN103341248 A CN 103341248A CN 2013100427801 A CN2013100427801 A CN 2013100427801A CN 201310042780 A CN201310042780 A CN 201310042780A CN 103341248 A CN103341248 A CN 103341248A
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seal
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T·穆尔特
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Reliable Automatic Sprinkler Co Inc
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Abstract

一种干式喷洒装置，具有：柔性管路部分，其相对两端具有开口；位于管路部分一端处的供给管线连接装置，供给管线连接装置具有开口以接收来自供给管线中的流体；通过供给管线连接装置进行密封的第一密封件，以防止来自供给管线的流体流入管路部分中；一喷洒喷头在管路部分的与供给管线连接装置相对的另一端处连接到所述管路部分，该喷洒喷头具有导向装置、第二密封件（其密封喷洒喷头的出口孔）和热响应元件（其被配置为使第二密封件保持密封）。流体容纳在管路部分中且位于第一密封件和第二密封件之间，该流体不易冻结。热响应元件被配置为，响应于升温状况释放第二密封件，以允许释放管路中的流体，并释放第一密封件以使其朝喷洒喷头运动。

Description

柔性干式喷洒装置
技术领域
本申请涉及喷洒设备，特别是一种干式喷洒设备。
背景技术
在一些暴露在冰冻环境下的区域中(如在冷冻机中或可能经历冰冻环境的人行道上)使用干式喷洒装置。在一些干管式系统中，在供给管道内的流体不受冻结的空间中铺设供给管道。干式喷洒装置连接到所述供给管道并延伸进入流体会被冻结的空间中。
干式喷洒装置的典型结构包括喷洒喷头、管路、管路入口端处的管接头（用于将入口端连接到灭火系统的管网中）、入口端处的插塞密封件（用于防止水进入管路中）、以及使插塞密封件保持在入口端的致动机构。典型地，喷洒喷头连接到管路的与管路入口端相对的一端。另外，管路部分常规地与大气相通，以允许任何可能形成在管路中的冷凝物排出。
发明人为Ondracek的美国专利No.5,775,431号和发明人为Ondracek的美国专利No.5,967,240号中公开了干式喷洒装置的例子。就如这些专利通常显示的那样，致动机构可以是杆或其他类似结构，其延伸穿过喷洒喷头和入口端之间的管路以保持入口端处的密封。致动机构包括位于喷洒喷头处的热响应支撑元件，该支撑元件支撑所述杆，因而也支撑入口端处的密封件。在一些喷洒装置中，管路在管路的喷洒喷头端处也被密封，致动机构在喷洒喷头端处通过密封帽被支撑，密封帽被热响应支撑元件支撑。在这类结构中，管路内两密封帽之间的空间可通过气体或液体而被加压，所述气体例如是干燥空气或氮气，所述液体例如是防冻溶液。当温度上升时，热响应支撑元件不能释放插塞密封件（以及管路的喷洒喷头端处的任何下部密封件）以让水从供给管道流入并通过管路而流至喷洒喷头（在水从供给管道流入并通过管路而流至喷洒喷头的情况下喷洒喷头散布流体）。
传统的干式喷洒器使用硬管制造，硬管在入口处具有密封件，所述密封件与喷洒装置温度传感器分开，温度传感器位于暴露在冰冻环境下的区域（如不被加热的区域）中。硬管从湿式管路系统（位于加热区）伸入不加热区域中，必须要准确对准和安装硬管，同时还要避开典型地在商业或工业建筑物中出现的各种建筑、结构和机械障碍物。
发明内容
为了消除一些上述问题和困难，提供了一种干式喷洒装置，该干式喷洒装置包括柔性管路部分，柔性管路部分在相对的两端处具有开口。该喷洒装置包括位于管路部分一端处的供给管线连接装置，供给管线连接装置具有开口以接收来自供给管线的流体。用第一密封件密封供给管线连接装置，以防止来自供给管线的流体进入管路部分中。喷洒喷头在管路部分的与供给管线连接装置相对的另一端处连接到管路部分，喷洒喷头具有导向装置、第二密封件和热响应元件，第二密封件密封喷洒喷头的出口孔，热响应元件被配置为使第二密封件保持密封。不易冻结的流体容纳在管路中且位于第一密封件和第二密封件之间。热响应元件被配置为：响应于升温状况释放第二密封件，从而允许释放出管路中的流体，并释放第一密封件以使该第一密封件朝喷洒喷头运动。
附图说明
图1示出了一种喷洒灭火系统，该系统包括根据本发明的一实施例的干式喷洒装置。
具体实施方式
图1示出了柔性干式喷洒装置的一实施例，该喷洒装置包括基本上为柔性的管路1，柔性管路一端连接到喷洒喷头2而另一端连接到配件3，配件3被构造为连接到湿式管、干式管、或预动式喷洒灭火系统。配件3包括第一密封件4，第一密封件4通常处于闭合或密封位置，以用于防止流体从所述配件流入柔性管路和喷洒喷头。管路1在喷洒喷头2处还被第二密封件5（如，密封帽）密封，被压在第二密封件5和喷洒喷头2的框架7之间的热致释放元件6支撑第二密封件5。第一密封件4通常被形成为具有带槽外边缘的环形塞，带槽外边缘靠在环形弹性垫圈9（如贝氏（Belleville）垫圈）上。弹性垫圈9被构造为用从配件3的内壁延伸的环形凸缘10进行密封。第二密封件5与第一密封件4类似地形成，也通常被形成为具有外环形槽的环形盘11，所述环形槽容纳弹性垫圈12，弹性垫圈12被构造为密封抵接形成在喷洒喷头2的出口孔14处的密封凸缘13。
管路1是柔性的并可由金属或非金属材料制成。例如，在一个实施例中，管路由波纹金属软管制成，而在另一实施例中，管路1由波纹塑料软管制成。管路外表面可覆置有例如编织护套以保护管路1。如该优选实施例所示，灭火喷洒喷头2具有外螺纹，所述外螺纹与管路1的出口端上的内螺纹接合。管路1的内螺纹接头可具有1/2英寸-1英寸的公称直径。尽管图中示出了灭火喷洒喷头2的具体结构，但是本发明的公开范围比该结构所示范围要宽，应认为，基本上目前或将来被认可或列出的任何灭火喷洒喷头都可连接到管路1上，取代图1所示的喷洒喷头2。
在图1示出的灭火喷洒喷头的密封状态中，灭火喷洒喷头中充注有流体并被加压以使第一密封件4保持密封。流体是防冻气体（如氮气）或防冻液体（如水/乙二醇混合物，或其他传统“防冻”液体）。
使用压差装置16连接喷洒灭火系统以确保管路1中的压力大于流体源中的供给压力，从而防止水或空气从喷洒灭火系统进入管路1中。压差装置被构造为：保持管路1中的压力P1与供给压力P3之比为3：1或更大。能够确信的是，压比为3：1足以防止喷洒灭火系统的供给源中的压力波动引起流体泄露到管路1中。在一个实施例中，压差装置被构造为压差控制器，所述压差控制器与监测供给压力P3的压力传感器通信，也与监测压力P1的压力传感器通信。压差控制器16与控制阀17通信，控制阀17位于管路1和加压流体源之间，加压流体的压力保持为P2，压力P2大于流体供给压力P3。如果所述压比降至低于3：1，那么控制器16就会向控制阀17发送信号，从而使阀17打开以将高压流体从供给系统18引入管路1中，直到压比达到3：1，此时指示控制阀17关闭。因而，压差控制器16和控制阀17根据传统反馈控制装置操作以保持所需的压比（例如为3：1）。应该理解为，压差控制器可包括计算机，计算机被配置为执行储存在有形的计算机可读介质或其他存储器中的计算机可读程序，并且包括用于操作控制器以保持P1和P3之间的压比的指令。尽管已经参照该优选实施例描述了控制装置的一个实施例，但是应该理解为，除文中所述的控制装置以外，其他控制装置也可用来保持所需的压比，其也在本发明公开范围内。
另外，监测压力P1、P2和P3的各压力传感器可被构造为与警报系统通信，以通知操作者进行与喷洒系统有关的操作。例如可配置用于压力P1的警报，从而如果压力降至某极限值就通知操作员，该警报可警示操作员喷洒喷头2可能正在泄露。应理解为，可通过各种方法进行通知，包括但不限于：电话讯息、电子邮件、视频显示和传真信息。可选择地，可安装靠近喷洒装置的可视压力指示器（如模拟压力计或数字压力计），用来显示密封在管路中的流体的密封压力保持在设计所允许的容许范围内。这种指示器可以仅为二元状态指示器，例如用颜色显示状态，例如用绿色表示可接受的操作状态，用红色表示不可接受的操作状态。当然，其他压力指示器也在本发明公开范围内。
图1中示出了一种可选择的柔性连接件15，所述连接件将第一密封件4连接到第二密封件5。柔性连接件15由管路1中流体存在的情况下不会被腐蚀的材料制成。柔性连接件15可以形成为链或线缆的结构形式。在一个典型实施例中，柔性连接件15由不锈钢制成。当喷洒装置的管路1如虚线所示那样弯曲时，由于连接件15是柔性的，管路中的连接件15将与管路1的内壁相一致而不会限制管路1的运动范围。另外，用柔性连接件15将第一密封帽和第二密封帽物理性地连接在一起，通过释放和排出第二密封件5将能使第一密封件4被从管路中拉出。将期望，连接件15将完全保证：使第一密封件4确实从管路1中的流动路径中移走，而不会受到管路1中的其他结构的阻碍。另外，不管管路1中的波纹或管路1的弯曲是否在管路内表面上引起任何扭结或尖锐棱角，连接件15都可让第一密封件4从管路1中移出。
由于喷洒装置的管路1具有柔性，因而喷洒系统的安装方便，这是因为喷洒装置可在建筑障碍物周围运动，而在通常情况下如果有建筑障碍物还需要做额外的管路工作。并且，因为管路1是柔性的，因此流体供给系统的安装者就不需要必须使喷洒装置的下垂部准确对准结构的顶部，这是因为可通过移动管路1来调节任何变化。
尽管已经相对于目前认为是优选的实施例描述了本发明，但是应该理解为，本发明并不局限于所公开的实施例。相反地，本发明覆盖了包括在所附权利要求书的实质和范围内的各种变形和等同结构。

Claims (13)

1.一种干式喷洒装置包括：
柔性管路部分，柔性管路部分的相对两端具有开口；
供给管线连接装置，供给管线连接装置位于所述管路部分的一端处，供给管线连接装置具有开口以接收来自供给管线的流体；
第一密封件，所述第一密封件通过供给管线连接装置进行密封，以防止来自供给管线的流体流入所述柔性管路部分中；
喷洒喷头，所述喷洒喷头在所述管路部分的与所述供给管线连接装置相对的另一端处连接到所述管路部分，喷洒喷头具有导向装置、第二密封件和热响应元件，第二密封件密封喷洒喷头的出口孔，热响应元件被配置为使第二密封件保持密封；以及
容纳在所述管路部分中且位于第一密封件和第二密封件之间的流体，其中该流体不易冻结，
其中，热响应元件被配置为：响应于升温状况释放第二密封件，以允许释放出管路部分中的流体，并释放第一密封件以使该第一密封件朝喷洒喷头运动。
2.根据权利要求1的干式喷洒装置，其中，所述流体包括气体和液体之一。
3.根据权利要求2的干式喷洒装置，其中，所述流体包括液态防冻溶液。
4.根据权利要求1的干式喷洒装置，所述干式喷洒装置还包括压差装置，所述压差装置被配置为使管路部分中的压力和流体供给压力之间的压比保持在至少一定比值。
5.根据权利要求4的干式喷洒装置，其中，压差装置被配置为使管路部分中的压力和流体供给压力之间的压比保持在至少为3：1。
6.根据权利要求1的干式喷洒装置，所述干式喷洒装置还包括螺纹连接部，所述螺纹连接部将所述管路部分连接到喷洒喷头。
7.根据权利要求1的干式喷洒装置，所述干式喷洒装置还包括连接到管路部分的压力指示器，所述压力指示器被构造来传输管路部分内的流体的压力。
8.根据权利要求7的干式喷洒装置，其中，压力指示器为模拟压力监测器和数字压力监测器中的至少一种。
9.根据权利要求8的干式喷洒装置，其中，压力指示器被构造为将信号传送给压力监测装置。
10.根据权利要求1的干式喷洒装置，其中，第一密封件和第二密封件通过柔性连接件连接。
11.根据权利要求10的干式喷洒装置，其中，柔性连接件包括链和线缆中的至少一种。
12.根据权利要求1的干式喷洒装置，其中，所述管路部分的内表面具有圆形截面，第一密封件具有圆形外周和环形凹槽，所述环形凹槽被构造为容纳弹性垫圈，弹性垫圈的直径小于所述管路部分的内表面的直径。
13.根据权利要求12的干式喷洒装置，其中，供给管线连接装置包括环形凸缘，该环形凸缘从供给管线连接装置的内壁伸展，该环形凸缘被构造为用弹性垫圈密封。
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