JPH0596163U - Excessive flow prevention device - Google Patents
Excessive flow prevention deviceInfo
- Publication number
- JPH0596163U JPH0596163U JP6110992U JP6110992U JPH0596163U JP H0596163 U JPH0596163 U JP H0596163U JP 6110992 U JP6110992 U JP 6110992U JP 6110992 U JP6110992 U JP 6110992U JP H0596163 U JPH0596163 U JP H0596163U
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- flow rate
- flow
- excessive
- differential pressure
- liquid chamber
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Abstract
(57)【要約】
【目的】 構成が簡素で安価に製造可能な過大流量防
止装置を提供する。
【構成】 水道の給水管に流量調節装置を配置し、給
水管内の流量が所定の制限流量に達すると、流量調節装
置(14)を作動させて流路面積を制限して最大流量が
制限流量を越えないようにする。流量調節装置は内部の
流路に臨んで設けられ移動可能な制限部材(15)を有
する。流量調節装置と直列に差圧発生装置(12)を設
け、この差圧発生装置の上流側と下流側とをそれぞれ、
変位可能な隔壁手段(17)で内部が二つの室に区画さ
れたシリンダ装置(16)のその二つの液室に導管(1
8、20)で連通させる。そして隔壁装置の変位に制限
部材を連動させるように連結部材(30)を設ける。(57) [Abstract] [Purpose] To provide an excessive flow prevention device which has a simple structure and can be manufactured at low cost. [Structure] A flow rate control device is arranged in the water supply pipe of the water supply, and when the flow rate in the water supply pipe reaches a predetermined limit flow rate, the flow rate control device (14) is operated to limit the flow passage area and limit the maximum flow rate Do not exceed The flow rate control device has a movable restricting member (15) provided so as to face the internal flow path. A differential pressure generator (12) is provided in series with the flow rate controller, and the upstream side and the downstream side of the differential pressure generator are respectively
A conduit (1) is provided to the two liquid chambers of a cylinder device (16) whose interior is divided into two chambers by a displaceable partition means (17).
8 and 20) to communicate. Then, a connecting member (30) is provided so as to interlock the limiting member with the displacement of the partition device.
Description
【0001】[0001]
本考案は過大流量防止装置に関し、詳細には上水道設備に用いる過大流量防止 装置に関し、より具体的には、規模の大きい給水装置において、使用水量が所定 の制限流量に達した場合に、給水量の最大量をその制限流量に制限し、実用上の 利便性を損なうことなく、給水の安定化を図る過大流量防止装置に関する。 The present invention relates to an excessive flow prevention device, and more particularly to an excessive flow prevention device used in water supply facilities, and more specifically, in a large-scale water supply device, when the amount of water used reaches a predetermined limit flow rate, The present invention relates to an excessive flow prevention device that limits the maximum amount of water to the limited flow rate and stabilizes water supply without impairing practical convenience.
【0002】[0002]
水道は本来配水管から分岐した給水管により各家庭に水道水を供給するシステ ムである。この場合、給水管から屋内の水使用機器に至る給水装置は配水管に直 結されるのが普通である。近年アパ−トや一般のビル等の如く使用量の多い需要 に対しても、従来採用されていた受水槽方式に代えて、配水管に直結する方式が 採用されるようになってきた。 Water supply is a system that originally supplies tap water to each household through a water supply pipe branched from the distribution pipe. In this case, the water supply system from the water supply pipe to the indoor water-using equipment is usually connected directly to the water distribution pipe. In recent years, even in the case of high demand such as in apartments and general buildings, the method of directly connecting to the water distribution pipe has been adopted instead of the conventional water tank method.
【0003】 この場合、給水管等給水装置の設計に当たっては、下流側末端での全ての水使 用機器の最大使用水量の合算量の、例えば80%をピ−ク流量として定め、この ピ−ク流量に対応して給水設備を設計するのが通例である。ところで、直結給水 では水の使用量が直接配水管内の状態に影響を与える。従って、一時に多数の機 器が最大使用量状態で使用され、その使用量が前述の設定ピ−ク流量を越えると 、配水管の下流側での給水圧の不足といった事態も生じ得る。In this case, when designing a water supply device such as a water supply pipe, the peak flow rate is set to, for example, 80% of the maximum amount of water used by all the water use devices at the downstream end, and the peak flow rate is set to 80%. It is customary to design the water supply equipment according to the flow rate. By the way, in the case of direct water supply, the amount of water used directly affects the condition inside the distribution pipe. Therefore, if a large number of devices are used at the maximum usage amount at one time and the usage amount exceeds the above-mentioned set peak flow rate, a situation may occur in which the water supply pressure is insufficient on the downstream side of the distribution pipe.
【0004】[0004]
そこで出願人は、実願平3−22104号において、使用水量が所定の制限流 量を越えた場合に、最大給水量をその制限流量に制限し、実用上の利便性を損な うことなく、給水の安定化を図る過大流量防止システムを提供した。しかしなが らこのシステムにおいては、流量測定装置と給水管の流量を直接制御する流量制 御装置を設けるとともに、流量測定装置からの信号に基づき流量制御装置を作動 させる制御装置を使用する。この制御装置は電子回路装置などを用いて構成する ことが可能であるが、その場合には比較的に高価なシステムとなる。そこで本考 案においては、比較的に安価に構成することの出来る過大流量防止装置を提供し ようとすることを目的とする。 Therefore, the applicant, in Japanese Patent Application No. 3-22104, limits the maximum water supply to the limit flow rate when the amount of water used exceeds a predetermined limit flow rate without impairing practical convenience. , Provided an overflow prevention system to stabilize the water supply. However, in this system, a flow rate control device and a flow rate control device that directly controls the flow rate of the water supply pipe are installed, and a control device that operates the flow rate control device based on the signal from the flow rate measurement device is used. This control device can be configured by using an electronic circuit device or the like, but in that case, it becomes a relatively expensive system. Therefore, the purpose of this proposal is to provide an overflow prevention device that can be constructed at a relatively low cost.
【0005】[0005]
上記課題を解決するために、本考案の過大流量防止装置においては、その流量 調節装置は、該流量調節装置内に形成される流路と、該流路に臨んで設けられ、 該流路の流路面積を調節するように作動可能な流量制限部材とを備えている。そ して、給水管に流量調節装置と直列に設けられる差圧発生装置と、ハウジングと 該ハウジング内を二つの室に仕切る変位可能な隔壁手段とを備えたシリンダ装置 と、差圧発生装置の上流側と下流側とをそれぞれシリンダ装置の二つの室の一方 に接続する連通手段とを備え、さらに隔壁手段の変位に流量制限部材を連動させ る連結部材を設けた。この構成により、差圧発生装置の両側における圧力差を用 いて直接隔壁部材を移動させ、それにより流量制限部材を連動させ、流量を制限 することができる。 In order to solve the above-mentioned problems, in the excessive flow prevention device of the present invention, the flow rate adjusting device is provided in a flow path formed in the flow rate adjusting device and facing the flow path. And a flow rate limiting member operable to adjust the flow passage area. Then, a differential pressure generating device provided in the water supply pipe in series with the flow rate control device, a cylinder device having a housing and a displaceable partition means for partitioning the housing into two chambers, and a differential pressure generating device The upstream side and the downstream side each have a communicating means for connecting to one of the two chambers of the cylinder device, and a connecting member for interlocking the flow rate limiting member with the displacement of the partition means is provided. With this configuration, it is possible to limit the flow rate by directly moving the partition member using the pressure difference between the two sides of the differential pressure generating device, thereby interlocking the flow rate limiting member.
【0006】[0006]
以下本考案の実施例を図面に基づき詳細に説明する。図1は本考案の第1の実 施例に係る過大流量防止装置を集合住宅への給水管に配置したときの概略の構成 を示す構成図であり、1は配水管、2は配水管1より分岐する集合住宅3のため の給水管であり、この給水管など給水装置の給水能力は、前述のようにして定め られるピ−ク流量を基にして設計される。10は本考案の実施例による過大流量 防止装置である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing a schematic configuration when an excessive flow prevention device according to a first embodiment of the present invention is arranged in a water supply pipe to an apartment house, 1 is a water pipe, 2 is a water pipe 1 It is a water supply pipe for the multi-dwelling housing 3 and the water supply capacity of the water supply device such as this water supply pipe is designed based on the peak flow rate determined as described above. Reference numeral 10 is an excessive flow prevention device according to an embodiment of the present invention.
【0007】 図2は過大流量防止装置10の構成を示す断面図であり、この装置10は、給 水管2の途中に配置される差圧を発生させる絞り装置としてのオリフィス12と 、このオリフィス12と直列に配置され、流量制限部材15を備えた仕切り弁1 4と、この仕切り弁14の上に載置され、内部が移動可能な隔壁手段としてのダ イアフラム17により二つの室A,Bに区画されているシリンダ装置16と、給 水管2におけるオリフィス12の上流側と下流側とをそれぞれシリンダ装置16 の室A,Bに流体連通させる連通手段としての一対の導管18、20を備えてい る。FIG. 2 is a cross-sectional view showing the configuration of the excessive flow prevention device 10. This device 10 is provided with an orifice 12 as a throttle device for generating a differential pressure arranged in the middle of the water supply pipe 2, and this orifice 12 And a sluice valve 14 provided in series with the flow rate restricting member 15 and a diaphragm 17 mounted on the sluice valve 14 and capable of moving the inside into two chambers A and B. It is provided with a partitioned cylinder device 16 and a pair of conduits 18, 20 as communication means for fluidly connecting the upstream side and the downstream side of the orifice 12 in the water supply pipe 2 to the chambers A, B of the cylinder device 16, respectively. ..
【0008】 オリフィス12に代えてベンチュリ−管等も使用可能であり、いずれにしても 例えばオリフィス12の形状が定められると、その絞り作用によりオリフィス1 2の上流側と下流側との間に生じる圧力差は流速の関数となる。そして流量は流 路面積と流速との積となるので、オリフィス12の形状が決まれば流量と圧力差 との間の関係が定められる。A Venturi tube or the like can be used instead of the orifice 12. In any case, when the shape of the orifice 12 is determined, it is generated between the upstream side and the downstream side of the orifice 12 by its throttling action. The pressure difference is a function of flow velocity. Since the flow rate is the product of the flow passage area and the flow velocity, once the shape of the orifice 12 is determined, the relationship between the flow rate and the pressure difference is determined.
【0009】 仕切り弁14内には給水管2に連通する流路22が形成され、流量制限部材と しての弁体15は、この流路22の側部に設けられた弁体収納部23内に収受さ れ、この流路22に臨み、本実施例においては流路22を横切る方向に移動する ことによりこの仕切り弁14内の流路面積を変化させることとなる。仕切り弁に 代えてグロ−ブバルブ等何らかの部材を作動させることにより流量を調節できる バルブが使用可能である。A flow path 22 communicating with the water supply pipe 2 is formed in the sluice valve 14, and the valve body 15 as a flow rate restricting member has a valve body accommodating portion 23 provided on a side portion of the flow path 22. The flow path area in the sluice valve 14 is changed by being received in the interior of the sluice, facing the flow passage 22, and moving in the direction traversing the flow passage 22 in the present embodiment. Instead of the sluice valve, a valve whose flow rate can be adjusted by operating some member such as a globe valve can be used.
【0010】 シリンダ装置16は本実施例においては箱型のブラッケト24を介して弁体収 納部23の上に載置されているが、ブラケット24は必ずしも必要ではない。シ リンダ装置16は上下のハウジング部材26、28により形成され、その内部は 、外周部が上下ハウジング部材26、28のフランジ部の間に挟持され固定され たダイアフラム17により2室、A、Bに分割されている。この室A,Bは導管 18、20によりオリフィス12の上流側すなわち高圧側と下流側すなわち低圧 側とにそれぞれ連通している。従って、オリフィス12の上流側と下流側との圧 力がそれぞれダイアフラム17の両側に作用し、ダイアフラム12はその圧力差 に応じて変位し、その位置はその際生じるダイアフラム12の弾性力と圧力差と が釣り合う位置となる。勿論、ダイアフラムに代えて周囲を液蜜にシ−ルしたピ ストンを使用することが可能である。また、ダイアフラム17の弾性力を利用す るのではなく、戻しバネを使用してもよい。In this embodiment, the cylinder device 16 is mounted on the valve body storage portion 23 via the box-shaped bracket 24, but the bracket 24 is not always necessary. The cylinder device 16 is formed by upper and lower housing members 26 and 28, and the inside thereof is divided into two chambers, A and B, by a diaphragm 17 whose outer peripheral portion is sandwiched and fixed between the flange portions of the upper and lower housing members 26 and 28. It is divided. The chambers A and B are connected to the upstream side, that is, the high pressure side and the downstream side, that is, the low pressure side, of the orifice 12 by conduits 18 and 20, respectively. Therefore, the pressure force on the upstream side of the orifice 12 and the pressure force on the downstream side of the orifice 12 act on both sides of the diaphragm 17, and the diaphragm 12 is displaced according to the pressure difference, and its position is the elastic force and the pressure difference of the diaphragm 12 generated at that time. And are in a balanced position. Of course, instead of the diaphragm, it is possible to use a pierce peal that is sealed with honey. Further, instead of utilizing the elastic force of the diaphragm 17, a return spring may be used.
【0011】 一端32が弁体15の上部に螺合されナット36により固定されたステム30 が、弁体収納部23の上部壁を通り、ブラケット24内を貫通してシリンダ装置 16内へと伸び、その他端34は一対のリテ−ナ38、40及びナット42、4 4によりダイアフラム17の中央部に取り付けられている。従って、ダイアフラ ム17の変位に弁体15が連動するので、ダイアフラムの位置により仕切り弁1 4の流量が定まることとなる。The stem 30 whose one end 32 is screwed onto the upper portion of the valve body 15 and fixed by the nut 36 passes through the upper wall of the valve body storage portion 23, penetrates through the bracket 24, and extends into the cylinder device 16. The other end 34 is attached to the center of the diaphragm 17 by a pair of retainers 38, 40 and nuts 42, 44. Therefore, since the valve element 15 is interlocked with the displacement of the diaphragm 17, the flow rate of the sluice valve 14 is determined by the position of the diaphragm.
【0012】 前述の通り、オリフィス12の両側には給水管2内の流量に応じた差圧が生じ 、その差圧に応じてダイアフラム17及び弁体15が変位して仕切り弁22内の 流路面積を設定する。従って、オリフィス12の形状が定まれば前述のピ−ク流 量相当量の流量が流れたときに発生する流速、差圧が定まる。その差圧によりダ イアフラム17及び弁体15が移動したときに画成される流路の面積が先に求め た流速との関係でピ−ク流量に相当する最大流量を可能とする大きさの面積とな るように、ダイアフラム17の変位量及び弁体15の形状が定められればよい。 尚、オリフィスと仕切り弁との配置は本実施例と逆の配置としてもよい。As described above, a differential pressure according to the flow rate in the water supply pipe 2 is generated on both sides of the orifice 12, the diaphragm 17 and the valve body 15 are displaced according to the differential pressure, and the flow path in the sluice valve 22 is changed. Set the area. Therefore, if the shape of the orifice 12 is determined, the flow velocity and the differential pressure generated when the flow amount equivalent to the above-mentioned peak flow amount is determined. Due to the pressure difference, the area of the flow passage defined when the diaphragm 17 and the valve body 15 move is of a size that enables the maximum flow rate corresponding to the peak flow rate in relation to the flow velocity obtained earlier. The displacement amount of the diaphragm 17 and the shape of the valve body 15 may be determined so as to have the area. The orifice and the sluice valve may be arranged in the reverse order of this embodiment.
【0013】 次に図3を参照して本考案に係る過大流量防止装置の第2実施例を説明する。 図3は過大流量防止装置50の構成を示す断面図であり、この装置50は、給水 管2の途中に配置される差圧を発生させる絞り装置としてのオリフィス52と、 このオリフィス52と直列に配置され、流量制限部材56を備えた仕切り弁54 とを有する。仕切り弁54はその内部に給水管2に連通する流路58を備えると ともに、その上部には、中空で上縁部62で開口している腔部60を備えている 。この腔部60の上縁部62に、シリンダ装置64が適宜手段により固定して装 着されている。このシリンダ装置は上下のハウジング部材66、68により形成 されるハウジング65を有し、ハウジング65の内部は隔壁手段70により上下 の液室78、80に区画されている。隔壁手段70は、その外周縁部を上下のハ ウジング部材66、68のフランジ部67、69により挟持されたダイアフラム 72と、リテーナ76を用いてダイアフラム72と一体化されたピストン74と からなる。ステムあるいはピストンロッド82がその下端で流量制限部材56に 螺着され、腔部60内を上方へ伸び、下ハウジング部材68の底壁84に装着さ れたガイドブッシュ86を貫通してハウジング65内へ伸びて、その上端部にお いてナット88を用いて隔壁手段70に固定されている。90は隔壁手段70、 流量制限部材56、ピストンロッド82を上方へ付勢するコイルバネである。Next, a second embodiment of the excessive flow prevention device according to the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view showing the structure of the excessive flow prevention device 50. This device 50 is provided with an orifice 52 arranged in the middle of the water supply pipe 2 as a throttle device for generating a differential pressure, and an orifice 52 connected in series with the orifice 52. And a sluice valve 54 provided with a flow rate limiting member 56. The sluice valve 54 has a flow passage 58 communicating with the water supply pipe 2 inside thereof, and has a cavity portion 60, which is hollow and opens at an upper edge portion 62, in the upper portion thereof. A cylinder device 64 is fixedly attached to the upper edge 62 of the cavity 60 by appropriate means. This cylinder device has a housing 65 formed by upper and lower housing members 66 and 68, and the inside of the housing 65 is partitioned by partition means 70 into upper and lower liquid chambers 78 and 80. The partition means 70 is composed of a diaphragm 72 whose outer peripheral edge is sandwiched by the flange portions 67 and 69 of the upper and lower housing members 66 and 68, and a piston 74 which is integrated with the diaphragm 72 using a retainer 76. The stem or piston rod 82 is screwed at its lower end to the flow rate restricting member 56, extends upward in the cavity 60, penetrates the guide bush 86 mounted on the bottom wall 84 of the lower housing member 68, and then the inside of the housing 65. And is secured to the partition means 70 by means of a nut 88 at its upper end. Reference numeral 90 denotes a coil spring that biases the partition means 70, the flow rate limiting member 56, and the piston rod 82 upward.
【0014】 上側の液室78は図示のように導管94を介して給水管2とオリフィス52の 上流側の位置で連通している。一方、下側の液室80は下ハウジング部材68の 底壁84に設けられた複数の貫通孔92、腔部60、及び流量制限部材56に形 成された連絡流路57を介して仕切り弁54の流路58に連通している。すなわ ち、本第2実施例においては、第1実施例における導管の一方が省かれ、仕切り 弁54の流路58すなわちオリフィス52の下流側は、流量制限部材56に形成 された連絡流路57、腔部60、及び下ハウジング部材68の底壁84に設けら れた複数の貫通孔92を介して下側の液室80に連通されている。The upper liquid chamber 78 communicates with the water supply pipe 2 at a position upstream of the orifice 52 via a conduit 94 as shown in the drawing. On the other hand, the lower liquid chamber 80 is a sluice valve via a plurality of through holes 92 provided in the bottom wall 84 of the lower housing member 68, the cavity 60, and the communication flow passage 57 formed in the flow rate limiting member 56. It communicates with the flow path 58 of 54. That is, in the second embodiment, one of the conduits in the first embodiment is omitted, and the flow passage 58 of the sluice valve 54, that is, the downstream side of the orifice 52, has a communication flow passage formed in the flow rate limiting member 56. 57, the cavity 60, and a plurality of through holes 92 provided in the bottom wall 84 of the lower housing member 68, which communicate with the lower liquid chamber 80.
【0015】 本実施例においても、オリフィス52等の寸法が定められれば、給水管2内を 流れる流量に応じてオリフィス52の上流側と仕切り弁54の流路58即ちオリ フィス52の下流側との間に一定の圧力差が生じ、それによって隔壁手段70が 移動する。従って、前述のピ−ク流量相当量の流量が流れたときに発生する差圧 により隔壁手段70即ち流量制限部材56が移動したときに画成される流路の面 積が、先に求めた流速との関係でピ−ク流量に相当する最大流量を可能とする大 きさの面積となるように、隔壁手段70の移動量、流量制限部材56の形状、バ ネ90の強さ等が定められればよい。Also in this embodiment, if the dimensions of the orifice 52 and the like are determined, the upstream side of the orifice 52 and the flow path 58 of the sluice valve 54, that is, the downstream side of the orifice 52 are determined depending on the flow rate of the water in the water supply pipe 2. A constant pressure difference is created between them, which causes the partition means 70 to move. Therefore, the surface area of the flow path defined when the partition means 70, that is, the flow rate restricting member 56 moves due to the differential pressure generated when a flow rate equivalent to the above-mentioned peak flow rate flows is previously obtained. The moving amount of the partition wall means 70, the shape of the flow rate restricting member 56, the strength of the panel 90, etc. are set so that the area is large enough to allow the maximum flow rate corresponding to the peak flow rate in relation to the flow velocity. It should be set.
【0016】 なお、上記各実施例においては、差圧を発生させる手段としてオリフィス或い はベンチュリを用いるとして説明したが、これらに代えて、通常の給水管に付属 して使用されている逆止弁、止水栓或いは水道用メータの使用が可能である。こ れらの器具は、一定の流量に対して固有の損失水頭を有するからである。このよ うな場合、既設のこれら器具をそのまま使用することは勿論可能であり、あらた めてオリフィス等を設ける必要はない。In each of the above embodiments, the orifice or the venturi is used as the means for generating the differential pressure, but instead of these, the check valve used in the ordinary water supply pipe is used. It is possible to use valves, water taps or water meters. This is because these devices have an inherent head loss for a given flow rate. In such a case, it is of course possible to use these existing instruments as they are, and it is not necessary to newly provide an orifice or the like.
【0017】 次に図4を参照して本考案の第3実施例を説明する。この第3実施例の過大流 量防止装置100は、流れ制御装置110をさらに備える点を除いて前述の第2 実施例とその構成は同じであるので、同じ部材には同一の参照番号を付してその 詳細な説明は省略する。Next, a third embodiment of the present invention will be described with reference to FIG. The overflow prevention device 100 of the third embodiment has the same structure as that of the above-described second embodiment except that a flow control device 110 is further provided. Therefore, the same members are designated by the same reference numerals. The detailed description is omitted.
【0018】 流れ制御装置110は、導管94とハウジング65内の上側液室78との間に 配置され、導管94と上側液室78との間の流体連通を制御するものである。The flow control device 110 is arranged between the conduit 94 and the upper liquid chamber 78 in the housing 65, and controls the fluid communication between the conduit 94 and the upper liquid chamber 78.
【0019】 本実施例における流れ制御装置110は、二つの逆止弁を備えたもので、弁箱 112内には導管94と上側液室78との間で連通する流路114が形成されて いる。この流路114は、途中で、平行な二つの第1と第2の流路部分116、 118に別れている。そして第1の流路部分116には導管94側から上側液室 78へ向かう流れは許して反対方向の流れは阻止する逆止弁120が配置され、 第2の流路部分118には上側液室78側から導管94へ向かう流れは許して反 対方向の流れは阻止する逆止弁130が配置されている。The flow control device 110 in this embodiment is provided with two check valves, and a flow path 114 communicating between the conduit 94 and the upper liquid chamber 78 is formed in the valve box 112. There is. The flow path 114 is divided into two parallel first and second flow path portions 116 and 118 on the way. A check valve 120 that allows a flow from the conduit 94 side to the upper liquid chamber 78 and blocks a flow in the opposite direction is disposed in the first flow path portion 116, and the second flow path portion 118 has an upper liquid flow path 118. A check valve 130 is arranged to allow the flow from the chamber 78 side to the conduit 94 and prevent the flow in the opposite direction.
【0020】 逆止弁120は図示の通りゴム等で形成される弁座122とバネ126によっ て弁座122に向けて付勢されている可動の弁体124を有する。バネ126の 強さは、導管94側の液圧が上側液室78側の液圧より所定の値、すなわち上記 ピーク流量に相当する流量が流れたときにオリフィス52の上流側と下流側即ち 流路58との間に生じることとなる差圧分だけ高くなった時に初めて弁体124 が開くこととなるような強さに設定される。The check valve 120 has a valve seat 122 made of rubber or the like as shown in the drawing, and a movable valve body 124 biased toward the valve seat 122 by a spring 126. The strength of the spring 126 is such that when the hydraulic pressure on the conduit 94 side is a predetermined value from the hydraulic pressure on the upper liquid chamber 78 side, that is, when the flow rate corresponding to the peak flow rate flows, the upstream side and the downstream side of the orifice 52, that is, the flow rate. The strength is set so that the valve body 124 is opened only when the pressure difference between the channel 58 and the passage 58 is increased.
【0021】 逆止弁130は逆止弁120と殆ど同じ構成を備えるが、弁体134を弁座1 32に向けて付勢するバネ136はバネ126に比して極めて弱い。実施例によ ってはこのバネ136を省略してもよい。The check valve 130 has almost the same structure as the check valve 120, but the spring 136 that biases the valve body 134 toward the valve seat 132 is extremely weak as compared with the spring 126. In some embodiments, this spring 136 may be omitted.
【0022】 上述のように構成された本実施例の過大流量防止装置においては、オリフィス 52の上流側の圧力は導管94を介して弁体124を開く方向に、そして弁体1 34を閉じる方向に作用する。オリフィス52の下流側の圧力は、流量制限部材 56に形成された連絡流路57、腔部60、及び下ハウジング部材68の底壁8 4に設けられた複数の貫通孔92を介して下側の液室80内へ作用し、さらに隔 壁手段70を介して上側液室78へ作用して弁体124を閉じ、弁体134を開 く方向に働く。従って、流量がピーク流量に達していないときは、両方の弁12 0、130共閉じていて、隔壁手段は移動せず、仕切り弁54の流路58の面積 は何ら制限されない。そして流量がピーク流量に達すると、オリフィス52の上 流側と下流側とには所定の差圧が生じ、その差圧が弁体124に作用するので弁 120は開き、上流側の圧力が上液室78に作用して隔壁手段70を下方へ移動 させ、仕切り弁54の流量制限部材56により流路58の面積を所定の値に制限 し、流量がそれ以上となるのを規制する。流量が減少すると、隔壁手段70の両 側に作用する液圧の差が減少するので隔壁手段70は戻しバネ90の作用により 図に於いて上方へ戻される。その際、弁体134が開かれて上側液室78側から 導管94側へ液が流れるようにする。In the excessive flow prevention device of the present embodiment configured as described above, the pressure on the upstream side of the orifice 52 is in the direction of opening the valve body 124 via the conduit 94 and in the direction of closing the valve body 134. Act on. The pressure on the downstream side of the orifice 52 is lowered through the communication flow path 57 formed in the flow rate limiting member 56, the cavity 60, and the plurality of through holes 92 provided in the bottom wall 84 of the lower housing member 68. To the upper liquid chamber 78 through the partition wall means 70 to close the valve body 124 and open the valve body 134. Therefore, when the flow rate does not reach the peak flow rate, both valves 120 and 130 are closed, the partition means does not move, and the area of the flow path 58 of the gate valve 54 is not limited at all. When the flow rate reaches the peak flow rate, a predetermined differential pressure is generated between the upstream side and the downstream side of the orifice 52, and the differential pressure acts on the valve element 124, so that the valve 120 opens and the upstream side pressure increases. The partition means 70 is moved downward by acting on the liquid chamber 78, and the flow restricting member 56 of the partition valve 54 restricts the area of the flow path 58 to a predetermined value, thereby restricting the flow rate from exceeding that value. When the flow rate decreases, the difference between the hydraulic pressures acting on both sides of the partition means 70 decreases, so that the partition means 70 is returned upward by the action of the return spring 90. At that time, the valve element 134 is opened to allow the liquid to flow from the upper liquid chamber 78 side to the conduit 94 side.
【0023】 図5に示されているのは本考案の第4の実施例に係る過大流量防止装置である が、この実施例はその流れ制御装置150が設けられる位置が第3実施例と異な るだけであるので、共通の部材には同じ番号を付してその説明は省略する。FIG. 5 shows an excessive flow prevention device according to a fourth embodiment of the present invention. This embodiment differs from the third embodiment in the position where the flow control device 150 is provided. Therefore, common members are given the same numbers and their explanations are omitted.
【0024】 本実施例の流れ制御装置150は、その基本構成は第3実施例の流れ制御装置 110と同じで、二つの逆止弁151と152を備えるが、第3実施例と異なり 、下側液室80と腔部60即ちオリフィス52の下流側との間の流体連通を制御 するようになっている。すなわち、図示のように逆止弁151と152は、下側 ハウジング部材68の底壁84に形成された貫通孔92に対応して設けられてい る。The flow control device 150 of the present embodiment has the same basic configuration as the flow control device 110 of the third embodiment and is provided with two check valves 151 and 152, but unlike the third embodiment, The fluid communication between the side liquid chamber 80 and the cavity 60, that is, the downstream side of the orifice 52 is controlled. That is, as shown, the check valves 151 and 152 are provided corresponding to the through holes 92 formed in the bottom wall 84 of the lower housing member 68.
【0025】 即ち、図において簡略図法で示される逆止弁151は第3実施例の逆止弁12 0に対応し、下側液室80から腔部60へ向かう流れは許すが逆の流れは阻止す る。そして、この逆止弁151に使用される、弁体を弁座に向けて付勢するバネ は所定の強さを有し、下側液室80と腔部60との間に所定の差圧が生じたとき に初めて弁120は開いて下側液室80から腔部60へ向かう流れを許すように なっている。That is, the check valve 151 shown in a simplified diagram in the figure corresponds to the check valve 120 of the third embodiment, allowing the flow from the lower liquid chamber 80 to the cavity 60, but not the reverse flow. Block. The spring used for the check valve 151 for urging the valve element toward the valve seat has a predetermined strength and a predetermined differential pressure between the lower liquid chamber 80 and the cavity 60. The valve 120 is opened only when the pressure is generated to allow the flow from the lower liquid chamber 80 toward the cavity 60.
【0026】 一方、逆止弁152は第3実施例の逆止弁130に対応し、腔部60から下側 液室80へ向かう流れは許すが逆の流れは阻止する。そして弁体を弁座に向けて 付勢するバネは極めて弱いか、或いは省略される。On the other hand, the check valve 152 corresponds to the check valve 130 of the third embodiment, and allows the flow from the cavity 60 to the lower liquid chamber 80 but blocks the reverse flow. The spring that biases the valve body toward the valve seat is extremely weak or omitted.
【0027】 上述のように構成された本実施例においては、流量がピーク流量以下の時には 、オリフィス52の上流側の圧力は導管94を介して上側液室78へ、そしてさ らに隔壁手段70を介して下側液室80へ作用する。一方、下流側の圧力は流量 制限部材56の連絡流路57を介して腔部60に作用する。弁151と152は 共に閉じている。In the present embodiment configured as described above, when the flow rate is less than or equal to the peak flow rate, the pressure upstream of the orifice 52 is passed through the conduit 94 to the upper liquid chamber 78 and further to the partition means 70. It acts on the lower liquid chamber 80 via. On the other hand, the pressure on the downstream side acts on the cavity 60 via the communication channel 57 of the flow rate limiting member 56. Both valves 151 and 152 are closed.
【0028】 そして、流量がピーク流量に達するとオリフィス52の上流側と下流側とのあ いだに所定の差圧が生じるので、弁151が開かれる。従って、下側液室80か ら腔部60へ水が流れ、隔壁手段70は下方へ移動し、流量制限部材56は流路 58の面積を所定の値に制限し、それ以上に流量が増加するのを防止する。そし て流量が減少すると、弁152が開く。When the flow rate reaches the peak flow rate, a predetermined differential pressure is generated between the upstream side and the downstream side of the orifice 52, so that the valve 151 is opened. Therefore, water flows from the lower liquid chamber 80 to the cavity 60, the partition means 70 moves downward, the flow rate limiting member 56 limits the area of the flow path 58 to a predetermined value, and the flow rate further increases. To prevent. Then, when the flow rate decreases, the valve 152 opens.
【0029】[0029]
以上説明した通り、本考案においては、差圧発生装置の両側に生じる差圧をそ の儘利用してシリンダ装置内に配置された隔壁手段を変位させ、その隔壁手段の 動きに流量調節装置の流量制限部材を連動させて最大許容流量を設定するように したので、極めて構造的にも簡単で安価な過大流量防止装置を提供することがで きる。 As described above, in the present invention, the differential pressure generated on both sides of the differential pressure generating device is used to displace the partition means arranged in the cylinder device, and the movement of the partition means causes the flow regulating device to move. Since the maximum permissible flow rate is set by interlocking with the flow rate limiting member, it is possible to provide an excessive flow rate preventer that is extremely structurally simple and inexpensive.
【0030】 差圧発生装置としては逆止栓、止水栓、メータ等水道配管に付属した器具の使 用が可能であり、既設のこれら器具を利用するときには新たな差圧発生装置を取 り付ける必要はない。As the differential pressure generating device, it is possible to use a check valve, a water stop valve, a device such as a meter attached to the water pipe, and when using these existing devices, a new differential pressure generating device must be installed. No need to attach.
【0031】 差圧発生装置の上流側と下流側のいずれかとそれに対応する液室との連通を流 れ制御装置を用いて制御し、所定の差圧が生じたときに初めて隔壁手段を所定位 置へ移動させるようにすると、制限流量以下の流量が流れているときに流路が全 く制限されず、より好ましい水の流出状態が得られる。Any one of the upstream side and the downstream side of the differential pressure generating device and the communication with the corresponding liquid chamber are controlled using a flow control device, and the partition means is moved to a predetermined position only when a predetermined differential pressure is generated. If the flow rate is set to a lower level, the flow path is not limited at all when the flow rate is equal to or lower than the limit flow rate, and a more preferable outflow state of water is obtained.
【0032】 さらに、連通手段の一方として、流量調節装置の流路から分岐して一方の液室 へ作用するようにすれば、導管の一方を省略でき、さらに費用を低減できるとと もに、敷設工事自体も簡単になる。Furthermore, if one of the communication means is branched from the flow path of the flow rate control device and acts on one of the liquid chambers, one of the conduits can be omitted and the cost can be further reduced. The laying work itself becomes simple.
【図1】本考案の実施例に係る過大流量防止装置を集合
住宅への給水管に配置したときの概略の構成を示す構成
図である。FIG. 1 is a configuration diagram showing a schematic configuration when an excessive flow prevention device according to an embodiment of the present invention is arranged in a water supply pipe to an apartment house.
【図2】第1実施例の過大流量防止装置10の構成を示
す断面図である。FIG. 2 is a cross-sectional view showing the configuration of an excessive flow prevention device 10 of the first embodiment.
【図3】第2実施例の過大流量防止装置50の構成を示
す断面図である。FIG. 3 is a cross-sectional view showing the configuration of an excessive flow prevention device 50 of a second embodiment.
【図4】第3実施例の過大流量防止装置100の構成を
示す断面図である。FIG. 4 is a cross-sectional view showing the configuration of an excessive flow prevention device 100 of a third embodiment.
【図5】第4実施例の過大流量防止装置140の構成を
示す断面図である。FIG. 5 is a sectional view showing the configuration of an excessive flow rate prevention device 140 of a fourth embodiment.
10、50、100、140 過大流量防止装置 12、52 オリフィス(絞り装置、差圧発生装置) 14、54 仕切り弁(流量調節装置) 15、56 流量制限部材 16、64 シリンダ装置 17、70 隔壁手段 18、20、92 導管 22、58 流路 30、82 ステム(連結部材) 10, 50, 100, 140 Excessive flow rate preventing device 12, 52 Orifice (throttle device, differential pressure generating device) 14, 54 Gate valve (flow rate adjusting device) 15, 56 Flow rate limiting member 16, 64 Cylinder device 17, 70 Partition means 18, 20, 92 Conduit 22, 58 Flow path 30, 82 Stem (connecting member)
Claims (14)
節可能な流量調節装置を配置し、前記給水管内の流量が
所定の制限流量に達すると、前記流量調節装置を作動さ
せて前記給水管内の最大流量を前記制限流量に制限し、
前記制限流量以上の流量が生じるのを阻止する過大流量
防止装置において、前記流量調節装置は、該流量調節装
置内に形成される流路と、該流路に臨んで設けられ、前
記流路の流路面積を調節するように作動可能な流量制限
部材とを備え、前記過大流量防止装置はさらに、前記給
水管に前記流量調節装置と直列に設けられた装置であっ
て、該装置を水が通過する際にその流量に応じて該装置
の上流側と下流側との間に圧力差が生じるようになって
いる差圧発生装置と、ハウジングと該ハウジング内を二
つの液室に仕切り、該二つの液室の圧力差により前記ハ
ウジング内で変位可能な隔壁手段とを備えたシリンダ装
置と、前記差圧発生装置の上流側と下流側とをそれぞれ
前記シリンダ装置の前記二つの液室のいずれかに流体連
通可能に接続する連通手段と、前記隔壁手段の変位に前
記流量制限部材を連動させる連結部材を設けたことを特
徴とする過大流量防止装置。1. A water supply pipe is provided with a flow rate adjusting device capable of adjusting a flow rate in the water supply pipe, and when the flow rate in the water supplying pipe reaches a predetermined limit flow rate, the flow rate adjusting device is operated to operate the flow rate adjusting device. Limit the maximum flow rate in the water supply pipe to the above limit flow rate,
In an excessive flow prevention device for preventing a flow rate equal to or more than the limited flow rate, the flow rate adjusting device is provided in a flow path formed in the flow rate adjusting device and facing the flow path, A flow restricting member operable to adjust the flow passage area, wherein the excessive flow prevention device is a device installed in the water supply pipe in series with the flow adjusting device, wherein A differential pressure generating device that is configured to generate a pressure difference between the upstream side and the downstream side of the device according to the flow rate when passing, and the housing and the inside of the housing are divided into two liquid chambers, Any one of the two liquid chambers of the cylinder device including a cylinder device provided with a partition means that is displaceable in the housing due to a pressure difference between the two liquid chambers, and an upstream side and a downstream side of the differential pressure generating device, respectively. Crab fluid connection Passing means and said flow restrictor excessive flow prevention device, characterized in that a connecting member for interlocking the displacement of said partition wall means.
いて、前記連通手段は、前記差圧発生装置の上流側と下
流側とをそれぞれ対応する液室に常時流体連通させてい
ることを特徴とする過大流量防止装置。2. The excessive flow rate preventing device according to claim 1, wherein the communicating means is always in fluid communication with the corresponding liquid chambers on the upstream side and the downstream side of the differential pressure generating device, respectively. Over flow prevention device.
いて、前記連通手段の一方は常時対応する液室に連通
し、前記連通手段の他方は、該他方の連通手段とそれに
対応する液室とのあいだの連通を開閉制御する流れ制御
装置を介してその対応する液室に連通可能とされ、前記
流れ制御装置は、前記差圧発生装置の前記上流側と下流
側との間に所定値以上の差圧が発生したときにのみ、前
記隔壁手段の移動が、前記流量制限部材を前記流路面積
が縮小する方向へ移動させる方向に生じるように、前記
他方の連通手段とその対応する液室との間に水の流れが
生じるように連通させることを特徴とする過大流量防止
装置。3. The excessive flow rate preventing device according to claim 1, wherein one of the communicating means is always in communication with a corresponding liquid chamber, and the other of the communicating means is the other communicating means and a liquid chamber corresponding thereto. It is possible to communicate with the corresponding liquid chamber through a flow control device that controls the opening and closing of the communication between the flow control device and the flow control device, and the flow control device has a predetermined value between the upstream side and the downstream side of the differential pressure generating device. Only when the above-mentioned differential pressure is generated, the movement of the partition wall means occurs in the direction in which the flow rate limiting member is moved in the direction in which the flow passage area is reduced, and the other communication means and its corresponding liquid. An excessive flow prevention device characterized by communicating with a chamber so that water flows.
いて、前記一方の連通手段は前記差圧発生装置の下流側
を前記液室の一方に連通し、前記他方の連通手段は前記
差圧発生装置の上流側を前記液室の他方に連通し、前記
流れ制御装置は、並列に配置された二つの逆止弁を備
え、該逆止弁の一方は、前記他方の液室から前記他方の
連通手段への水の流れを阻止し、所定値以上の差圧が作
用したときに前記他方の連通手段から前記他方の液室へ
の水の流れを許し、該逆止弁の他方は、前記他方の液室
から前記他方の連通手段への流れを許し、前記他方の連
通手段から前記他方の液室への水の流れを阻止すること
を特徴とする過大流量防止装置。4. The excessive flow rate preventing device according to claim 3, wherein the one communicating means communicates a downstream side of the differential pressure generating device with one of the liquid chambers, and the other communicating means has the differential pressure. The upstream side of the generator is connected to the other of the liquid chambers, and the flow control device includes two check valves arranged in parallel, and one of the check valves is connected to the other of the liquid chambers. The flow of water to the communication means of, and when the differential pressure of a predetermined value or more acts, allowing the flow of water from the other communication means to the other liquid chamber, the other of the check valve, An excessive flow rate preventing device, which allows a flow from the other liquid chamber to the other communicating means and prevents a flow of water from the other communicating means to the other liquid chamber.
いて、前記一方の連通手段は前記差圧発生装置の上流側
を前記液室の一方に連通し、前記他方の連通手段は前記
差圧発生装置の下流側を前記液室の他方に連通し、前記
流れ制御装置は、並列に配置された二つの逆止弁を備
え、該逆止弁の一方は、前記他方の連通手段から前記他
方の液室への流れを阻止し、所定値以上の差圧が作用し
たときに前記他方の液室から前記他方の連通手段への水
の流れを許し、該逆止弁の他方は、前記他方の連通手段
から前記他方の液室への流れを許し、前記他方の液室か
ら前記他方の連通手段への水の流れを阻止することを特
徴とする過大流量防止装置。5. The excessive flow rate preventing device according to claim 3, wherein the one communicating means communicates an upstream side of the differential pressure generating device with one of the liquid chambers, and the other communicating means uses the differential pressure. The downstream side of the generator is connected to the other of the liquid chambers, and the flow control device includes two check valves arranged in parallel, one of the check valves being connected from the other communication means to the other. Of the check valve to the liquid chamber, and when the differential pressure of a predetermined value or more acts, the flow of water from the other liquid chamber to the other communication means is allowed, and the other one of the check valves Is allowed to flow from the communicating means to the other liquid chamber and the flow of water from the other liquid chamber to the other communicating means is blocked.
いて、前記連通手段は、それぞれ前記給水管の所定の位
置において前記給水管から分岐して前記液室のそれぞれ
に連通する導管であることを特徴とする過大流量制限装
置。6. The excessive flow prevention device according to claim 1, wherein the communication means is a conduit branching from the water supply pipe at a predetermined position of the water supply pipe and communicating with each of the liquid chambers. An excessive flow rate limiting device.
いて、前記シリンダ装置は前記流量調節装置に中空の部
材を介して載置され、前記中空の部材は前記流量調節装
置の前記流路に連通し、前記連通手段の一方は前記中空
の部材を含んでなることを特徴とする過大流量制限装
置。7. The excessive flow prevention device according to claim 1, wherein the cylinder device is mounted on the flow rate adjusting device via a hollow member, and the hollow member is provided in the flow path of the flow rate adjusting device. An excessive flow rate limiting device, wherein one of the communicating means includes the hollow member.
節可能な流量調節装置を配置し、前記給水管内の流量が
所定の制限流量に達すると、前記流量調節装置を作動さ
せて前記給水管内の最大流量を前記制限流量に制限し、
前記制限流量以上の流量が生じるのを阻止する過大流量
防止装置において、前記流量調節装置は、該流量調節装
置内に形成される流路と、該流路に臨んで設けられ、前
記流路の流路面積を調節するように作動可能な流量制限
部材とを備え、前記過大流量防止装置はさらに、ハウジ
ングと該ハウジング内を二つの液室に仕切り、該二つの
液室の圧力差により前記ハウジング内で変位可能な隔壁
手段とを備えたシリンダ装置と、前記給水管の流れ方向
において隔てられた二点をそれぞれ前記シリンダ装置の
前記二つの室のいずれか一方に流体連通可能にする連通
手段と、前記隔壁手段の変位に前記流量制限部材を連動
させる連結部材を設けたことを特徴とする過大流量防止
装置。8. A flow control device for adjusting a flow rate in the water supply pipe is arranged in a water supply pipe of the water supply, and when the flow rate in the water supply pipe reaches a predetermined limit flow rate, the flow control device is operated to operate the flow control device. Limit the maximum flow rate in the water supply pipe to the above limit flow rate,
In an excessive flow prevention device for preventing a flow rate equal to or more than the limited flow rate, the flow rate adjusting device is provided in a flow path formed in the flow rate adjusting device and facing the flow path, The excessive flow prevention device further comprises a housing and two liquid chambers inside the housing, and the housing is formed by a pressure difference between the two liquid chambers. A cylinder device having a partition means displaceable therein, and a communication means capable of fluidly connecting two points separated in the flow direction of the water supply pipe to either one of the two chambers of the cylinder device. An excessive flow rate preventing device comprising a connecting member for interlocking the flow rate limiting member with the displacement of the partition means.
いて、前記連通手段は、前記差圧発生装置の上流側と下
流側とをそれぞれ対応する液室に常時流体連通させてい
ることを特徴とする過大流量防止装置。9. The excessive flow rate preventing device according to claim 8, wherein the communicating means is always in fluid communication with the corresponding liquid chambers on the upstream side and the downstream side of the differential pressure generating device. Over flow prevention device.
おいて、前記連通手段の一方は常時対応する液室に連通
し、前記連通手段の他方は、該他方の連通手段とそれに
対応する液室とのあいだの連通を開閉制御する流れ制御
装置を介してその対応する液室に連通可能とされ、前記
流れ制御装置は、前記差圧発生装置の前記上流側と下流
側との間に所定値以上の差圧が発生したときにのみ、前
記隔壁手段の移動が、前記流量制限部材を前記流路面積
が縮小する方向へ移動させる方向に生じるように、前記
他方の連通手段とその対応する液室との間に水の流れが
生じるように連通させることを特徴とする過大流量防止
装置。10. The excessive flow rate preventing device according to claim 8, wherein one of the communicating means is always in communication with a corresponding liquid chamber, and the other of the communicating means is the other communicating means and a liquid chamber corresponding thereto. It is possible to communicate with the corresponding liquid chamber through a flow control device that controls the opening and closing of the communication between the flow control device and the flow control device, and the flow control device has a predetermined value between the upstream side and the downstream side of the differential pressure generating device. Only when the above-mentioned differential pressure is generated, the movement of the partition wall means occurs in the direction in which the flow rate limiting member is moved in the direction in which the flow passage area is reduced, and the other communication means and its corresponding liquid. An excessive flow prevention device characterized by communicating with a chamber so that water flows.
において、前記一方の連通手段は前記差圧発生装置の下
流側を前記液室の一方に連通し、前記他方の連通手段は
前記差圧発生装置の上流側を前記液室の他方に連通し、
前記流れ制御装置は、並列に配置された二つの逆止弁を
備え、該逆止弁の一方は、前記他方の液室から前記他方
の連通手段への水の流れを阻止し、所定値以上の差圧が
作用したときに前記他方の連通手段から前記他方の液室
への水の流れを許し、該逆止弁の他方は、前記他方の液
室から前記他方の連通手段への流れを許し、前記他方の
連通手段から前記他方の液室への水の流れを阻止するこ
とを特徴とする過大流量防止装置。11. The excessive flow rate preventing device according to claim 10, wherein the one communicating means communicates a downstream side of the differential pressure generating device with one of the liquid chambers, and the other communicating means has the differential pressure. The upstream side of the generator communicates with the other of the liquid chambers,
The flow control device includes two check valves arranged in parallel, and one of the check valves blocks a flow of water from the liquid chamber of the other to the communication means of the other, and a predetermined value or more. When the differential pressure is applied, the flow of water from the other communication means to the other liquid chamber is allowed, and the other one of the check valves allows the flow from the other liquid chamber to the other communication means. An excessive flow rate preventing device, which permits the flow of water from the other communicating means to the other liquid chamber.
において、前記一方の連通手段は前記差圧発生装置の上
流側を前記液室の一方に連通し、前記他方の連通手段は
前記差圧発生装置の下流側を前記液室の他方に連通し、
前記流れ制御装置は、並列に配置された二つの逆止弁を
備え、該逆止弁の一方は、前記他方の連通手段から前記
他方の液室への流れを阻止し、所定値以上の差圧が作用
したときに前記他方の液室から前記他方の連通手段への
水の流れを許し、該逆止弁の他方は、前記他方の連通手
段から前記他方の液室への流れを許し、前記他方の液室
から前記他方の連通手段への水の流れを阻止することを
特徴とする過大流量防止装置。12. The excessive flow rate preventing device according to claim 10, wherein the one communicating means communicates an upstream side of the differential pressure generating device with one of the liquid chambers, and the other communicating means uses the differential pressure. The downstream side of the generator communicates with the other of the liquid chambers,
The flow control device includes two check valves arranged in parallel, and one of the check valves blocks a flow from the communication means of the other to the liquid chamber of the other, and a difference of a predetermined value or more. When pressure is applied, the flow of water from the other liquid chamber to the other communication means is allowed, and the other of the check valves allows the flow from the other communication means to the other liquid chamber, An excessive flow rate preventing device, which blocks the flow of water from the other liquid chamber to the other communication means.
おいて、前記連通手段は、それぞれ前記給水管の所定の
位置において前記給水管から分岐して前記液室のそれぞ
れに連通する導管であることを特徴とする過大流量制限
装置。13. The excessive flow rate preventing device according to claim 8, wherein the communication means is a conduit branching from the water supply pipe at a predetermined position of the water supply pipe and communicating with each of the liquid chambers. An excessive flow rate limiting device.
おいて、前記シリンダ装置は前記流量調節装置に中空の
部材を介して載置され、前記中空の部材は前記流量調節
装置の前記流路に連通し、前記連通手段の一方は前記中
空の部材を含んでなることを特徴とする過大流量制限装
置。14. The excessive flow prevention device according to claim 8, wherein the cylinder device is mounted on the flow rate adjusting device via a hollow member, and the hollow member is provided in the flow path of the flow rate adjusting device. An excessive flow rate limiting device, wherein one of the communicating means includes the hollow member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992061109U JP2576943Y2 (en) | 1992-04-13 | 1992-08-07 | Excessive flow prevention device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3088992 | 1992-04-13 | ||
JP4-30889 | 1992-04-13 | ||
JP1992061109U JP2576943Y2 (en) | 1992-04-13 | 1992-08-07 | Excessive flow prevention device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0596163U true JPH0596163U (en) | 1993-12-27 |
JP2576943Y2 JP2576943Y2 (en) | 1998-07-23 |
Family
ID=26369327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1992061109U Expired - Fee Related JP2576943Y2 (en) | 1992-04-13 | 1992-08-07 | Excessive flow prevention device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2576943Y2 (en) |
-
1992
- 1992-08-07 JP JP1992061109U patent/JP2576943Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2576943Y2 (en) | 1998-07-23 |
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