JP3493377B2 - Pig launching device, pig stopping device, and pig launching and landing station - Google Patents
Pig launching device, pig stopping device, and pig launching and landing stationInfo
- Publication number
- JP3493377B2 JP3493377B2 JP31386897A JP31386897A JP3493377B2 JP 3493377 B2 JP3493377 B2 JP 3493377B2 JP 31386897 A JP31386897 A JP 31386897A JP 31386897 A JP31386897 A JP 31386897A JP 3493377 B2 JP3493377 B2 JP 3493377B2
- Authority
- JP
- Japan
- Prior art keywords
- pig
- chamber
- housing
- pipe
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cleaning In General (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、流体圧力を加える
ことにより配管内を拭浄するピグを発射・停止させる装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for firing and stopping a pig for wiping the inside of a pipe by applying a fluid pressure.
【0002】[0002]
【従来の技術】配管の内壁に付着したスラリー状又は溶
液状の飲食物、化学薬品又はインキ等の製造原料、藻
類、微生物、その他スケールは、流体の移送能力を低下
させ、細菌やカビ等発生の原因となり衛生上好ましくな
い。また、移送流体を全く異なった物質に変更する場合
には、配管内を通水するだけの洗浄では、管内壁の付着
物質を除去しきれず変更後の流体内に溶け込む弊害が生
じる。この問題を解決する手段として、流体圧力を加え
ることにより配管内の付着物を拭浄するピグが公知であ
る。配管内の曲部及び凹凸部においても円滑に走行でき
るように、ピグは一般にゴム、ウレタン等の弾性材料で
一体成形される。2. Description of the Related Art Slurry or solution foods and drinks, raw materials for manufacturing chemicals or inks, algae, microorganisms, and other scales adhering to the inner wall of pipes reduce the fluid transfer capacity and generate bacteria and mold. It is not good for hygiene. Further, when the transfer fluid is changed to a completely different substance, there is an adverse effect that the substance adhering to the inner wall of the pipe cannot be completely removed by washing by simply passing water through the pipe and the substance is dissolved in the changed fluid. As a means for solving this problem, a pig that wipes and cleans the deposits in the pipe by applying a fluid pressure is known. The pig is generally integrally formed of an elastic material such as rubber or urethane so that it can travel smoothly even in a curved portion and an uneven portion in the pipe.
【0003】ピグを用いて配管内を拭浄するシステムで
は、配管の始端にピグ発射装置が設けられかつ配管の終
端にピグ停止装置が設けられる。ピグの走行圧力を与え
る流体としては空気、窒素、水蒸気等の圧縮性流体(気
体等)又は水道水、洗浄溶液等の非圧縮性流体(液体
等)が用いられる。流体圧力を加えることによりピグ発
射装置に装填したピグを配管内に圧送し、ピグは配管の
内壁に密着して走行して管壁に付着した高粘性物質を掻
き落とす。圧送されたピグが配管の終端に到達すると、
ピグはピグ停止装置により受けられ停止する。特開昭5
9−95983号公報は、ピグ発射装置(ランチャー)
及びピグ停止装置(キャッチャー)の例を開示してい
る。In a system for cleaning the inside of a pipe using a pig, a pig launching device is provided at the beginning of the pipe and a pig stop device is provided at the end of the pipe. As the fluid that gives the running pressure of the pig, a compressible fluid (gas or the like) such as air, nitrogen or water vapor, or incompressible fluid (liquid or the like) such as tap water or a cleaning solution is used. By applying fluid pressure, the pig loaded in the pig launching device is pumped into the pipe, and the pig runs in close contact with the inner wall of the pipe to scrape off the highly viscous substance adhering to the pipe wall. When the pumped pig reaches the end of the pipe,
The pig is stopped by the pig stop device. JP-A-5
The 9-95983 publication is a pig launcher (launcher).
And an example of a pig stop device (catcher) is disclosed.
【0004】[0004]
【発明が解決しようとする課題】ところで、従来のピグ
発射装置では流体圧力の脱漏のためにピグの発射が不能
に陥ることがある。また、従来のピグ停止装置ではピグ
の進行方向前方の流体圧力を適正に緩和することが困難
で、ピグを所望の停止位置で受けることができず、場合
によっては配管内でピグが停止することもある。これら
の障害が発生すると、その都度ピグを回収して装置の整
備・修理等を行う必要があるだけでなく、ピグに過剰な
流体圧力が加わったりピグが装置内部で激突する等によ
りピグが破損し、ピグの有効寿命を短縮させることにも
なる。このため、ピグ発射装置は確実にピグを発射し、
ピグ停止装置はピグを所望の位置で確実に停止できるこ
とが求められる。By the way, in the conventional pig launching apparatus, the firing of the pig may become impossible due to the leakage of the fluid pressure. In addition, it is difficult for the conventional pig stop device to appropriately relax the fluid pressure in the forward direction of the pig, so that the pig cannot be received at the desired stop position, and in some cases, the pig stops in the pipe. There is also. When these obstacles occur, it is not only necessary to collect the pig each time to perform maintenance and repair of the device, but also the pig is damaged due to excessive fluid pressure applied to the pig or the pig colliding inside the device. However, it also shortens the useful life of the pig. Therefore, the pig launcher reliably fires the pig,
The pig stop device is required to surely stop the pig at a desired position.
【0005】他面、従来のように、ピグ発射装置とピグ
停止装置の2つの装置を別個独立に設けるピグシステム
の場合、配管を循環経路に構成することが不可能であっ
た。従って、循環しない単一方向の配管にせざるを得
ず、ピグの走行は一方通行方式又は往復方式のいずれか
に限られる。一方通行方式では、ピグ発射装置により配
管の始端から発射されたピグを配管の終端のピグ停止装
置で停止させた後、ピグ停止装置からピグを取り出して
ピグ発射装置に作業員の手で装填する作業を必要とし、
ピグの連続走行が事実上不可能で大きな手間を要する不
具合がある。また、往復方式では、配管の始端及び終端
にそれぞれ1つずつピグ発射装置及びピグ停止装置を備
えることとなり、装置数増加によるコスト増大を招くこ
ととなる。これらの問題を解決するために、別個の装置
であるピグ発射装置及びピグ停止装置の両方の機能を兼
ね備えた装置が求められているが、従来はピグ発射装置
はピグの発射のみ、ピグ停止装置はピグの停止のみしか
できず、1つの装置でピグの発射及び停止の両方が可能
なものは存在しなかった。On the other hand, in the case of a conventional pig system in which two devices, a pig launching device and a pig stopping device, are provided independently of each other, it has been impossible to construct a pipe in a circulation path. Therefore, there is no choice but to use unidirectional piping that does not circulate, and the traveling of the pig is limited to either the one-way system or the reciprocating system. In the one-way system, the pig fired from the start end of the pipe by the pig launcher is stopped by the pig stop device at the end of the pipe, and then the pig is taken out from the pig stop device and loaded into the pig launcher by a worker's hand. Requires work,
There is a problem that continuous running of pigs is virtually impossible and requires a lot of work. Further, in the reciprocating method, one pig launching device and one pig stopping device are provided at each of the start end and the end of the pipe, which leads to an increase in cost due to an increase in the number of devices. In order to solve these problems, a device having both functions of a pig launching device and a pig stopping device, which are separate devices, is required, but conventionally, the pig launching device is only a pig launching device and a pig stopping device. Can only stop the pig, and no single device can both fire and stop the pig.
【0006】そこで、本発明は、確実にピグの発射及び
停止ができるピグ発射装置及びピグ停止装置を提供し、
さらに従来別個の装置であるピグ発射装置及びピグ停止
装置の両方の機能を兼ね備えた装置を提供することを目
的とする。Therefore, the present invention provides a pig launching device and a pig stopping device capable of reliably launching and stopping a pig,
It is another object of the present invention to provide a device that has the functions of both a pig launching device and a pig stopping device, which are separate devices conventionally.
【0007】本発明によるピグ発射装置は、チャンバ
(21)を有するハウジング(20)と、ハウジング
(20)に固定されかつ受け部(36)を有するスリー
ブ(30)とを備える。ハウジング(20)は、チャン
バ(21)内に流体を供給する供給口(23)を有し、
スリーブ(30)は、チャンバ(21)内に延びかつチ
ャンバ(21)に連絡する受け部(36)を形成する内
管部(32)と、受け部(36)の一端に形成された装
填口(41)と、ハウジング(20)の外側に延びる連
結部(33)と、配管の始端(92)に接続されかつ受
け部(36)の他端に形成された発射口(51)とを有
する。装填口(41)から発射口(51)に向かって縮
径するテーパ部(40)を受け部(36)に形成する。
供給口(23)からチャンバ(21)内に流体圧力を加
えて、受け部(36)内に配置したピグ(70)を発射
口(51)から配管内に圧送できる。The pig launcher according to the present invention comprises a housing (20) having a chamber (21) and a sleeve (30) fixed to the housing (20) and having a receiving portion (36). The housing (20) has a supply port (23) for supplying a fluid into the chamber (21),
The sleeve (30) has an inner tube portion (32) extending into the chamber (21) and forming a receiving portion (36) communicating with the chamber (21), and a loading port formed at one end of the receiving portion (36). (41), a connecting part (33) extending to the outside of the housing (20), and a discharge port (51) connected to the starting end (92) of the pipe and formed at the other end of the receiving part (36). . A tapered portion (40) having a diameter reduced from the loading port (41) toward the firing port (51) is formed in the receiving part (36).
Fluid pressure can be applied to the chamber (21) from the supply port (23), and the pig (70) arranged in the receiving part (36) can be pumped into the pipe from the firing port (51).
【0008】本発明のピグ発射装置は、スリーブ(3
0)の内管部(32)により形成される受け部(36)
のテーパ部(40)によりピグ(70)を適正に発射位
置に装填できるため、流体圧力の脱漏を防止して確実に
ピグ(70)を発射することができる。本明細書中、
「受け部(36)内」とは、ピグ(70)の全体がスリ
ーブ(30)の受け部(36)内に存在している場合の
ほか、ピグ(70)の一部が受け部(36)内にある場
合を含む。The pig launching device of the present invention comprises a sleeve (3
0) the inner tube portion (32) formed by the receiving portion (36)
Since the pig (70) can be properly loaded in the firing position by the taper portion (40) of the above, leakage of the fluid pressure can be prevented and the pig (70) can be fired reliably. In this specification,
"Inside the receiving part (36)" means that the entire pig (70) is present inside the receiving part (36) of the sleeve (30), and part of the pig (70) is in the receiving part (36). ) Including the case.
【0009】本発明のピグ停止装置は、チャンバ(2
1)を有するハウジング(20)と、ハウジング(2
0)に固定されかつ受け部(36)を有するスリーブ
(30)とを備えている。ハウジング(20)は、スリ
ーブ(30)と同一軸線上に配置された配管の終端(9
1)に接続される入口(22)と、チャンバ(21)内
の流体を排出する排出口(24)とを有し、スリーブ
(30)は、チャンバ(21)内に延びる内管部(3
2)と、ハウジング(20)の外側に延びる連結部(3
3)と、チャンバ(21)に連絡する受け部(36)の
一端に形成された装填口(41)を有する。装填口(4
1)からピグ(70)の進行方向に向かって縮径するテ
ーパ部(40)を受け部(36)に形成し、配管の終端
(91)から送られるピグ(70)を受け部(36)内
で停止させる。The pig stopping apparatus of the present invention is provided with a chamber (2
Housing (20) having (1) and housing (2)
0) and a sleeve (30) having a receiving portion (36). The housing (20) has a pipe end (9) arranged on the same axis as the sleeve (30).
1) having an inlet (22) connected to the chamber (21) and an outlet (24) for discharging the fluid in the chamber (21), and the sleeve (30) has an inner pipe portion (3) extending into the chamber (21).
2) and a connecting portion (3) extending outside the housing (20).
3) and a loading port (41) formed at one end of the receiving part (36) communicating with the chamber (21). Loading port (4
The tapered portion (40) having a diameter reduced from 1) toward the traveling direction of the pig (70) is formed in the receiving portion (36), and the pig (70) sent from the end (91) of the pipe is received by the receiving portion (36). Stop inside.
【0010】本発明のピグ停止装置では、流体圧力によ
り配管の終端(91)から圧入されたピグ(70)はチ
ャンバ(21)を通ってスリーブ(30)の内管部(3
2)の受け部(36)へ進入する一方、ピグ(70)前
方の流体はハウジング(20)の排出口(24)から排
出されるため、ピグ(70)の受け部(36)への進入
が円滑に行われる。ピグ(70)の後端が配管の終端
(91)から離脱した後も、ピグ(70)は配管の終端
(91)側からの流体圧力により受け部(36)への進
入を続けるが、受け部(36)のテーパ部(40)は装
填口(41)から発射口(51)に向かって縮径してい
るため、やがてテーパ部(40)とピグ(70)のスカ
ート部(73、75)とが接触し、ピグ(70)は受け
部(36)内で停止する。従って、ピグ(70)を受け
部(36)内の所望の位置で確実に停止させることがで
きる。In the pig stop device of the present invention, the pig (70) press-fitted from the end (91) of the pipe by the fluid pressure passes through the chamber (21) and the inner pipe portion (3) of the sleeve (30).
While the fluid in front of the pig (70) is discharged from the discharge port (24) of the housing (20) while entering the receiving portion (36) of (2), the pig (70) enters the receiving portion (36). Is done smoothly. Even after the rear end of the pig (70) separates from the end (91) of the pipe, the pig (70) continues to enter the receiving portion (36) due to the fluid pressure from the end (91) side of the pipe. Since the taper portion (40) of the portion (36) is reduced in diameter from the loading port (41) toward the discharge port (51), the taper portion (40) and the skirt portion (73, 75) of the pig (70) will eventually occur. ) And the pig (70) stops in the receiving part (36). Therefore, the pig (70) can be reliably stopped at a desired position in the receiving portion (36).
【0011】本発明によるピグ発着ステーションは、チ
ャンバ(21)を有するハウジング(20)と、ハウジ
ング(20)に固定されかつ受け部(36)を有するス
リーブ(30)とを備える。スリーブ(30)と同一軸
線上に配置された配管の終端(91)に接続される入口
(22)と、チャンバ(21)内に流体を供給する供給
口(23)と、チャンバ(21)内の流体を排出する排
出口(24)とを有し、スリーブ(30)は、チャンバ
(21)に連絡する受け部(36)の一端に形成された
装填口(41)と、配管の始端(92)に接続されかつ
受け部(36)の他端に形成された発射口(51)とを
有する。受け部(36)には、装填口(41)から発射
口(51)に向かって縮径するテーパ部(40)が形成
される。供給口(23)からチャンバ(21)内に流体
圧力を加えて、受け部(36)内に配置したピグ(7
0)を発射口(51)から配管内に圧送すると共に、配
管の終端(91)から送られるピグ(70)を受け部
(36)内で停止させる。The pig landing station according to the invention comprises a housing (20) having a chamber (21) and a sleeve (30) fixed to the housing (20) and having a receiving portion (36). An inlet (22) connected to the end (91) of a pipe arranged on the same axis as the sleeve (30), a supply port (23) for supplying a fluid into the chamber (21), and an inside of the chamber (21). And a discharge port (24) for discharging the fluid, and the sleeve (30) has a loading port (41) formed at one end of a receiving part (36) communicating with the chamber (21) and a starting end of the pipe ( 92) and a discharge port (51) formed at the other end of the receiving portion (36). The receiving portion (36) is formed with a taper portion (40) whose diameter is reduced from the loading port (41) toward the launch port (51). A fluid pressure is applied from the supply port (23) into the chamber (21), and the pig (7) disposed in the receiving portion (36) is
0) is pressure-fed into the pipe from the firing port (51) and stopped in the receiving part (36) while the pig (70) is fed from the end (91) of the pipe.
【0012】このピグ発着ステーションは、従来、別個
の装置であったピグ発射装置及びピグ停止装置の両方の
機能を兼ね備えた装置であり、ピグ発射装置及びピグ停
止装置の2つの装置を用意することなく1つの装置で済
むため、コスト低減、省スペース化を図ることができ
る。また、従来は不可能であった循環経路の配管におい
て、ピグ(70)を発射・停止させることが可能とな
る。さらに、前記のピグ発射装置及びピグ停止装置で述
べた通り、ピグ(70)の発射及び停止を確実に行うこ
とができる。This pig landing station is a device that has the functions of both a pig launching device and a pig stopping device, which were conventionally separate devices, and two devices, a pig launching device and a pig stopping device, must be prepared. Since only one device is required, cost reduction and space saving can be achieved. In addition, the pig (70) can be fired / stopped in the circulation path piping, which has been impossible in the past. Further, as described in the pig launching device and the pig stopping device, it is possible to reliably launch and stop the pig (70).
【0013】本発明の実施の形態では、テーパ部(4
0)と同一軸線上に接続されかつ発射口(51)に連続
する直管部(50)が受け部(36)に形成される。直
管部(50)により、ピグ(70)の停止及び発射をよ
り確実に行うことができる。ハウジング(20)に固定
されるフランジ部(31)をスリーブ(30)に設けて
もよく、この場合、内管部(32)はフランジ部(3
1)からチャンバ(21)内に延び、連結部(33)は
フランジ部(31)からハウジング(20)の外側に延
びる。連結部(33)を設けることにより、発射口(5
1)と配管の始端(92)とを容易に連結でき、フラン
ジ部(31)を設けることにより、ハウジング(20)
及びスリーブ(30)の整備・修理を円滑に行うことが
できる。装填口(41)の内径はピグ(70)のスカー
ト部(73、75)の外径よりも大きく、発射口(5
1)の内径はピグ(70)のスカート部(73、75)
の外径よりも僅かに小さい。これにより、ピグ(70)
を円滑に装填口(41)内に導入できると共に、発射口
(51)の近傍でピグ(70)のスカート部(73、7
5)を停止させることができるので、ピグ(70)を停
止位置・発射位置に的確に配置させ、停止動作及び発射
動作を確実に行うことができる。In the embodiment of the present invention, the tapered portion (4
The straight pipe part (50) connected to the same axis line as 0) and continuing to the discharge port (51) is formed in the receiving part (36). The straight pipe portion (50) can more reliably stop and fire the pig (70). The sleeve (30) may be provided with a flange portion (31) fixed to the housing (20), in which case the inner pipe portion (32) is provided with the flange portion (3).
1) extends into the chamber (21) and the connecting part (33) extends from the flange part (31) to the outside of the housing (20). By providing the connecting portion (33), the firing port (5
1) and the starting end (92) of the pipe can be easily connected, and by providing the flange portion (31), the housing (20)
The sleeve and the sleeve (30) can be smoothly maintained and repaired. The inner diameter of the loading port (41) is larger than the outer diameters of the skirt portions (73, 75) of the pig (70), and the firing port (5
The inner diameter of 1) is the skirt (73, 75) of the pig (70).
Slightly smaller than the outer diameter of. This allows the pig (70)
Can be smoothly introduced into the loading port (41), and the skirt (73, 7) of the pig (70) can be provided near the launch port (51).
Since 5) can be stopped, the pig (70) can be accurately arranged at the stop position and the firing position, and the stop operation and the firing operation can be reliably performed.
【0014】ピグ発着ステーションの実施の形態では、
受け部(36)内の流体圧力をスリーブ(30)の外側
に連絡させる1又は2以上の横孔(47)をスリーブ
(30)に形成する。テーパ部(40)と直管部(5
0)との接続部(49)の近傍に横孔(47)を形成
し、受け部(36)内のピグ(70)の前方の流体圧力
は横孔(47)及びチャンバ(21)を通じて排出口
(24)に連絡させてもよい。横孔(47)を形成する
ことにより、ピグ(70)の停止時にピグ(70)の前
方の流体圧力を逃がすことができるので、ピグ(70)
が進行方向と反対に押し戻されず、ピグ(70)を受け
部(36)のできるだけ奥の位置で停止させることがで
きる。従って、その後ピグ(70)の発射動作を行う場
合には、流体圧力が最も効率よくピグ(70)に加わる
ため、ピグ(70)がより確実に発射できる。In an embodiment of a pig landing station,
One or more lateral holes (47) are formed in the sleeve (30) to connect the fluid pressure in the receiving portion (36) to the outside of the sleeve (30). Taper part (40) and straight pipe part (5
0), a lateral hole (47) is formed in the vicinity of the connecting portion (49), and the fluid pressure in front of the pig (70) in the receiving portion (36) is discharged through the lateral hole (47) and the chamber (21). The outlet (24) may be contacted. By forming the lateral hole (47), the fluid pressure in front of the pig (70) can be released when the pig (70) is stopped, so that the pig (70) can be released.
Is not pushed back in the direction opposite to the traveling direction, and the pig (70) can be stopped at a position as far as possible from the receiving portion (36). Therefore, when the firing operation of the pig (70) is performed thereafter, the fluid pressure is most efficiently applied to the pig (70), so that the pig (70) can be fired more reliably.
【0015】[0015]
【発明の実施の形態】以下、本発明によるピグ発着ステ
ーションの実施の形態を図1〜図8に基づいて説明す
る。本発明はピグ発射装置及びピグ停止装置に関する
が、ピグ発着ステーションのピグ発射機能又はピグ停止
機能のいずれかに着目すれば容易に理解できるため、単
機能のピグ発射装置及びピグ停止装置の実施の形態の説
明は省略する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a pig landing station according to the present invention will be described below with reference to FIGS. The present invention relates to a pig launching device and a pig stopping device, but since it can be easily understood by focusing on either the pig launching function or the pig stopping function of the pig landing station, the implementation of the single function pig launching device and the pig stopping device is described. The description of the form is omitted.
【0016】図1及び図2に示すピグ発着ステーション
(10)は、従来、別個の装置であったピグ発射装置及
びピグ停止装置の両方の機能を兼ね備えた装置であり、
図3に示すように配管に接続され、図4〜図8に示すよ
うなピグ(70)を発射及び停止を行う。ピグ(70)
は、ほぼ球形の頭部(71)と、後部スカート部(7
5)と、頭部(71)と後部スカート部(75)との間
に配置された中間スカート部(73)と、頭部(7
1)、中間スカート部(73)及び後部スカート部(7
5)を接続する軸部(77)とを備える。ピグ(70)
の頭部(71)の外径は配管の内径よりも小さく、中間
スカート部(73)及び後部スカート部(75)の外径
は配管の内径よりも僅かに大きい。ピグ(70)が配管
内を走行すると、中間スカート部(73)及び後部スカ
ート部(75)が管壁と密着することにより、配管の内
部が拭浄される。The pig landing station (10) shown in FIGS. 1 and 2 is a device having both functions of a pig launching device and a pig stopping device, which are conventionally separate devices,
It is connected to a pipe as shown in FIG. 3 and fires and stops a pig (70) as shown in FIGS. 4 to 8. Pig (70)
Has a substantially spherical head (71) and a rear skirt (7
5), an intermediate skirt (73) located between the head (71) and the rear skirt (75), and a head (7).
1), middle skirt (73) and rear skirt (7)
5) for connecting the shaft portion (77). Pig (70)
The outer diameter of the head portion (71) is smaller than the inner diameter of the pipe, and the outer diameters of the intermediate skirt portion (73) and the rear skirt portion (75) are slightly larger than the inner diameter of the pipe. When the pig (70) runs in the pipe, the middle skirt portion (73) and the rear skirt portion (75) are in close contact with the pipe wall, so that the inside of the pipe is cleaned.
【0017】ピグ発着ステーション(10)は、チャン
バ(21)を有するハウジング(20)と、ハウジング
(20)に固定されかつ受け部(36)を有するスリー
ブ(30)と、スリーブ(30)と同一軸線上に配置さ
れかつ配管の終端(91)に接続されるガイド管(1
5)とを備える。ハウジング(20)は、ガイド管(1
5)に接続される入口(22)と、チャンバ(21)内
に流体を供給する供給口(23)と、チャンバ(21)
内の流体を排出する排出口(24)とを有する。スリー
ブ(30)は、チャンバ(21)に連絡する受け部(3
6)の一端に形成された装填口(41)と、配管の始端
(92)に接続されかつ受け部(36)の他端に形成さ
れた発射口(51)とを有する。受け部(36)には、
装填口(41)から発射口(51)に向かって縮径する
テーパ部(40)が形成される。The pig landing station (10) is identical to the sleeve (30), the housing (20) having the chamber (21), the sleeve (30) fixed to the housing (20) and having the receiving portion (36). A guide pipe (1) arranged on the axis and connected to the end (91) of the pipe.
5) and. The housing (20) has a guide tube (1
5), an inlet (22), a supply port (23) for supplying a fluid into the chamber (21), and a chamber (21)
A discharge port (24) for discharging the fluid therein. The sleeve (30) has a receiving portion (3) that communicates with the chamber (21).
6) has a loading port (41) formed at one end and a discharge port (51) connected to the starting end (92) of the pipe and formed at the other end of the receiving part (36). In the receiving part (36),
A taper portion (40) is formed whose diameter decreases from the loading port (41) toward the firing port (51).
【0018】ピグ発着ステーション(10)からピグ
(70)を発射する場合、ピグ(70)は図7ないし図
8に示す発射位置に装填され、図3に示す発射口バルブ
(94)及び供給口バルブ(95)が開放され、入口バ
ルブ(93)及び排出口バルブ(96)は閉鎖される。
この状態で、供給口(23)からチャンバ(21)内に
流体圧力を加えることにより、受け部(36)内に配置
したピグ(70)を発射口(51)から配管内に圧送す
る。受け部(36)のテーパ部(40)によりピグ(7
0)を適正に発射位置に装填できるため、流体圧力の脱
漏を防止して確実にピグ(70)を発射することができ
る。When firing the pig (70) from the pig landing station (10), the pig (70) is loaded in the firing position shown in FIGS. 7 to 8 and the firing port valve (94) and supply port shown in FIG. Valve (95) is opened and inlet valve (93) and outlet valve (96) are closed.
In this state, a fluid pressure is applied from the supply port (23) into the chamber (21), so that the pig (70) arranged in the receiving portion (36) is pumped into the pipe through the firing port (51). The tapered portion (40) of the receiving portion (36) causes the pig (7
Since 0) can be properly loaded at the firing position, leakage of the fluid pressure can be prevented and the pig 70 can be reliably fired.
【0019】ピグ発着ステーション(10)でピグ(7
0)を停止させる場合、図3に示す入口バルブ(93)
及び排出口バルブ(96)が開放され、発射口バルブ
(94)及び供給口バルブ(95)は閉鎖される。配管
の終端(91)からガイド管(15)を通じて送られる
ピグ(70)を受け部(36)内で停止させる。図4に
示すように、配管の終端(91)からガイド管(15)
に入ったピグ(70)は配管の終端(91)側からの流
体圧力によりチャンバ(21)を通ってスリーブ(3
0)の受け部(36)へ進入する一方、ピグ(70)前
方の流体はハウジング(20)の排出口(24)から排
出されるため、ピグ(70)の受け部(36)への進入
が円滑に行われる。図5のようにピグ(70)の後端が
ガイド管(15)から離脱した後も、ピグ(70)は配
管の終端(91)側からの流体圧力により受け部(3
6)への進入を続けるが、受け部(36)のテーパ部
(40)は装填口(41)から発射口(51)に向かっ
て縮径しているため、図6のようにテーパ部(40)と
ピグ(70)のスカート部(73、75)とが接触し、
やがてテーパ部(40)にスカート部(73、75)が
密着して図7ないし図8の状態となりピグ(70)は受
け部(36)内で停止する。このようにして、ピグ(7
0)を受け部(36)内の所望の位置で確実に停止させ
ることができる。At the pig departure / arrival station (10), the pig (7
0) is stopped, the inlet valve (93) shown in FIG. 3 is used.
And the outlet valve (96) is opened and the outlet valve (94) and the inlet valve (95) are closed. The pig (70) sent from the end (91) of the pipe through the guide pipe (15) is stopped in the receiving part (36). As shown in FIG. 4, the end of the pipe (91) to the guide pipe (15)
The entered pig (70) passes through the chamber (21) by the fluid pressure from the end (91) side of the pipe, and then the sleeve (3).
0) to the receiving part (36), while the fluid in front of the pig (70) is discharged from the outlet (24) of the housing (20), the pig (70) enters the receiving part (36). Is done smoothly. Even after the rear end of the pig (70) is disengaged from the guide pipe (15) as shown in FIG. 5, the pig (70) receives the receiving portion (3) by the fluid pressure from the end (91) side of the pipe.
6), the taper portion (40) of the receiving portion (36) is reduced in diameter from the loading port (41) toward the ejection port (51), so that the taper portion (40) as shown in FIG. 40) and the skirts (73, 75) of the pig (70) come into contact with each other,
Eventually, the skirt portions (73, 75) come into close contact with the taper portion (40) and the states shown in FIGS. 7 to 8 are reached, and the pig (70) stops in the receiving portion (36). In this way, the pig (7
0) can be reliably stopped at a desired position in the receiving portion (36).
【0020】本発明の実施の形態では、テーパ部(4
0)と同一軸線上に接続されかつ発射口(51)に連続
する直管部(50)が受け部(36)に形成される。直
管部(50)により、ピグ(70)の停止及び発射をよ
り確実に行うことができる。スリーブ(30)は、チャ
ンバ(21)内に延びる内管部(32)と、ハウジング
(20)の外側に延びる連結部(33)とを備える。ハ
ウジング(20)に固定されるフランジ部(31)をス
リーブ(30)に設けてもよく、この場合、内管部(3
2)はフランジ部(31)からチャンバ(21)内に延
び、連結部(33)はフランジ部(31)からハウジン
グ(20)の外側に延びる。連結部(33)を設けるこ
とにより、発射口(51)と配管の始端(92)とを容
易に連結でき、フランジ部(31)を設けることによ
り、ハウジング(20)及びスリーブ(30)の整備・
修理を円滑に行うことができる。装填口(41)の内径
はピグ(70)のスカート部(73、75)の外径より
も大きく、発射口(51)の内径はピグ(70)のスカ
ート部(73、75)の外径よりも僅かに小さい。これ
により、ピグ(70)を円滑に装填口(41)内に導入
できると共に、発射口(51)の近傍でピグ(70)の
スカート部(73、75)を停止させることができるの
で、ピグ(70)を停止位置・発射位置に的確に配置さ
せ、停止動作及び発射動作を確実に行うことができる。In the embodiment of the present invention, the tapered portion (4
The straight pipe part (50) connected to the same axis line as 0) and continuing to the discharge port (51) is formed in the receiving part (36). The straight pipe portion (50) can more reliably stop and fire the pig (70). The sleeve (30) comprises an inner tube portion (32) extending into the chamber (21) and a connecting portion (33) extending outside the housing (20). A flange portion (31) fixed to the housing (20) may be provided on the sleeve (30), and in this case, the inner pipe portion (3).
2) extends from the flange portion (31) into the chamber (21), and the connecting portion (33) extends from the flange portion (31) to the outside of the housing (20). By providing the connecting part (33), the firing port (51) and the starting end (92) of the pipe can be easily connected, and by providing the flange part (31), maintenance of the housing (20) and the sleeve (30).・
Repairs can be done smoothly. The inner diameter of the loading port (41) is larger than the outer diameter of the skirt portion (73, 75) of the pig (70), and the inner diameter of the firing port (51) is the outer diameter of the skirt portion (73, 75) of the pig (70). Slightly smaller than. As a result, the pig (70) can be smoothly introduced into the loading port (41), and the skirt portions (73, 75) of the pig (70) can be stopped near the firing port (51). (70) can be accurately arranged at the stop position and the firing position, and the stop operation and the firing operation can be reliably performed.
【0021】さらに、この実施の形態では、受け部(3
6)内の流体圧力をスリーブ(30)の外側に連絡させ
る1又は2以上の横孔(47)をスリーブ(30)に形
成する。テーパ部(40)と直管部(50)との接続部
(49)の近傍に横孔(47)を形成し、受け部(3
6)内のピグ(70)の前方の流体圧力は横孔(47)
及びチャンバ(21)を通じて排出口(24)に連絡さ
せる。横孔(47)を形成することにより、ピグ(7
0)が特に図5ないし図6に示すような位置で進行する
とき、ピグ(70)の前方の流体圧力を横孔(47)か
ら逃がすことができるので、ピグ(70)が進行方向と
反対に押し戻されず、ピグ(70)を受け部(36)の
できるだけ奥の位置で停止させることができる。従っ
て、その後ピグ(70)の発射動作を行う場合には、流
体圧力が最も効率よくピグ(70)に加わるため、ピグ
(70)がより確実に発射できる。横孔(47)は、例
えばスリーブ(30)に120°間隔で3箇所設ける。
横孔(47)の形成位置は図示のような内管部(32)
に限らず、連結部(33)に形成してもよい。Further, in this embodiment, the receiving portion (3
6) One or more lateral holes (47) are formed in the sleeve (30) to communicate the fluid pressure in the outside of the sleeve (30). A lateral hole (47) is formed in the vicinity of the connecting portion (49) between the tapered portion (40) and the straight pipe portion (50), and the receiving portion (3) is formed.
The fluid pressure in front of the pig (70) in 6) is in the lateral hole (47).
And through the chamber (21) to the outlet (24). By forming the lateral hole (47), the pig (7
0) particularly when traveling in a position as shown in FIGS. 5 to 6, fluid pressure in front of the pig (70) can be released from the lateral hole (47), so that the pig (70) is opposite to the traveling direction. The pig (70) can be stopped at a position as deep as possible in the receiving part (36) without being pushed back to the position. Therefore, when the firing operation of the pig (70) is performed thereafter, the fluid pressure is most efficiently applied to the pig (70), so that the pig (70) can be fired more reliably. The lateral holes (47) are provided in the sleeve (30) at three positions at 120 ° intervals, for example.
The formation position of the lateral hole (47) is the inner tube portion (32) as shown.
However, it may be formed in the connecting portion (33).
【0022】ハウジング(20)の排出口(24)は、
スリーブ(30)内でピグ(70)を確実に進行方向に
進めるため、入口(22)よりも発射口(51)側より
に設けられる。一方、ハウジング(20)の供給口(2
3)は、ピグ(70)の発射時にチャンバ(21)内の
流体が横孔(47)からスリーブ(30)内に流入して
ピグ(70)を反対方向に押さないように、スリーブ
(30)の装填口(41)に近接して設けられる。ま
た、横孔(47)の径が大きすぎると発射時に流体が横
孔(47)から抜けて発射不能となるので注意を要す
る。横孔(47)の内径は受け部(36)の最小内径に
対し10〜20%が望ましい。例えば、受け部(36)
の最小内径が23mmの場合、横孔(47)の内径は3
mmに設定する。The outlet (24) of the housing (20) is
In order to reliably advance the pig (70) in the traveling direction in the sleeve (30), the pig (70) is provided closer to the firing port (51) than the inlet (22). On the other hand, the supply port (2) of the housing (20)
3) the sleeve (30) so that when the pig (70) is fired, the fluid in the chamber (21) does not flow into the sleeve (30) through the lateral hole (47) and push the pig (70) in the opposite direction. ) Is provided in the vicinity of the loading port (41). Further, if the diameter of the lateral hole (47) is too large, the fluid will escape from the lateral hole (47) at the time of firing and it will be impossible to fire. The inner diameter of the lateral hole (47) is preferably 10 to 20% of the minimum inner diameter of the receiving portion (36). For example, the receiving part (36)
If the minimum inner diameter of 23 mm is 23 mm, the inner diameter of the lateral hole (47) is 3
Set to mm.
【0023】本発明は、前記の実施の形態に限定され
ず、変更が可能である。例えば、前記の実施の形態は入
口(22)と別個に供給口(23)を設けたが、供給口
(23)を省略して入口(22)からチャンバ(21)
内に流体を供給してもよい。別法として、供給口(2
3)を省略して排出口(24)から流体を供給してもよ
い。また、前記の実施の形態ではガイド管(15)をピ
グ発着ステーション(10)の一部として設けている
が、ガイド管(15)を省略し、スリーブ(30)と同
一軸線上に配置した配管の終端(91)をガイド管とし
て機能させることも可能である。The present invention is not limited to the above-mentioned embodiment, but can be modified. For example, in the above embodiment, the supply port (23) is provided separately from the inlet (22), but the supply port (23) is omitted and the chamber (21) is introduced from the inlet (22).
A fluid may be supplied inside. Alternatively, supply port (2
The fluid may be supplied from the outlet (24) by omitting 3). Further, although the guide tube (15) is provided as a part of the pig landing station (10) in the above-mentioned embodiment, the guide tube (15) is omitted and the pipe arranged on the same axis as the sleeve (30). It is also possible to make the end (91) of the function as a guide tube.
【0024】[0024]
【発明の効果】本発明によれば、ピグの発射及び停止を
確実に行うことができ、ピグ発着ステーションにより、
ピグ発射装置及びピグ停止装置の2つの装置を用意する
ことなく1つの装置で済むため、コスト低減、省スペー
ス化を図ることができる。ピグ発着ステーションはピグ
発射装置としてもピグ停止装置としても使用できるた
め、用途に合わせて使い分けが可能である。また、従来
は不可能であった循環経路の配管において、ピグを発射
・停止させることが可能となる。According to the present invention, it is possible to reliably start and stop the pig, and the pig landing station
Since it is possible to use only one device without preparing the two devices of the pig launching device and the pig stopping device, it is possible to achieve cost reduction and space saving. Since the pig landing station can be used as both a pig launching device and a pig stopping device, it can be used properly according to the application. In addition, it is possible to fire and stop the pig in the piping of the circulation path, which has been impossible in the past.
【図1】 本発明によるピグ発着ステーションの断面図1 is a cross-sectional view of a pig landing station according to the present invention.
【図2】 図1の左側面図2 is a left side view of FIG.
【図3】 ピグ発着ステーションを配管に接続した状態
を示す概略図FIG. 3 is a schematic diagram showing a state where a pig landing station is connected to a pipe.
【図4】 ピグ発着ステーション内でのピグの動作を示
す断面図(1)FIG. 4 is a sectional view (1) showing the operation of the pig in the pig landing station.
【図5】 ピグ発着ステーション内でのピグの動作を示
す断面図(2)FIG. 5 is a cross-sectional view (2) showing the operation of the pig inside the pig landing station.
【図6】 ピグ発着ステーション内でのピグの動作を示
す断面図(3)FIG. 6 is a cross-sectional view (3) showing the operation of the pig in the pig landing station.
【図7】 ピグ発着ステーション内でのピグの動作を示
す断面図(4)FIG. 7 is a cross-sectional view (4) showing the operation of the pig in the pig landing station.
【図8】 ピグ発着ステーション内でのピグの動作を示
す断面図(5)FIG. 8 is a cross-sectional view (5) showing the operation of the pig in the pig landing station.
10・・ピグ発着ステーション、 15・・ガイド管、
20・・ハウジング、 21・・チャンバ、 22・
・入口、 23・・供給口、 24・・排出口、 30
・・スリーブ、 31・・フランジ部、 32・・内管
部、 33・・連結部、 36・・受け部、 40・・
テーパ部、 41・・装填口、 47・・横孔、 49
・・接続部、 50・・直管部、 51・・発射口、
70・・ピグ、 73、75・・スカート部、 91・
・配管の終端、 92・・配管の始端、10 ・ ・ Pig departure / arrival station, 15 ・ ・ Guide tube,
20 · Housing, 21 · Chamber, 22 ·
・ Inlet, 23 ・ ・ Supply port, 24 ・ ・ Discharge port, 30
..Sleeve, 31..flange part, 32..inner tube part, 33..connection part, 36..receiving part, 40 ..
Taper part, 41 ... Loading port, 47 ... Horizontal hole, 49
..Connection parts, 50..Straight pipe parts, 51 ..
70 · · Pig, 73, 75 · · Skirt part, 91 ·
・ End of pipe, 92 ・ ・ Start of pipe,
Claims (11)
ングに固定されかつ受け部を有するスリーブとを備え、 ハウジングは、チャンバ内に流体を供給する供給口を有
し、 スリーブは、チャンバ内に延びかつチャンバに連絡する
受け部を形成する内管部と、受け部の一端に形成された
装填口と、ハウジングの外側に延びる連結部と、配管の
始端に接続されかつ受け部の他端に形成された発射口と
を有し、 装填口から発射口に向かって縮径するテーパ部を受け部
に形成し、 供給口からチャンバ内に流体圧力を加えて、受け部内に
配置したピグを発射口から配管内に圧送できることを特
徴とするピグ発射装置。1. A housing having a chamber and a sleeve fixed to the housing and having a receiving portion, the housing having a supply port for supplying a fluid into the chamber, the sleeve extending into the chamber and the chamber. An inner pipe portion that forms a receiving portion that communicates with the loading port, a loading port formed at one end of the receiving portion, a connecting portion that extends to the outside of the housing, and a connecting portion that is connected to the starting end of the pipe and is formed at the other end of the receiving portion. A taper part having a launch port and a diameter reduced from the loading port toward the launch port is formed in the receiving part, and fluid pressure is applied from the supply port into the chamber, and the pig arranged in the receiving part is piped from the launch port. A pig launcher characterized in that it can be pumped inside.
ンジ部を備え、内管部はフランジ部からチャンバ内に延
び、連結部はフランジ部からハウジングの外側に延びる
請求項1に記載のピグ発射装置。2. The pig launching device according to claim 1, wherein the sleeve includes a flange portion fixed to the housing, the inner pipe portion extends from the flange portion into the chamber, and the connecting portion extends from the flange portion to an outside of the housing.
ングに固定されかつ受け部を有するスリーブとを備え、 ハウジングは、スリーブと同一軸線上に配置された配管
の終端に接続される入口と、チャンバ内の流体を排出す
る排出口とを有し、 スリーブは、チャンバ内に延びる内管部と、ハウジング
の外側に延びる連結部と、チャンバに連絡する受け部の
一端に形成された装填口とを有し、 装填口からピグの進行方向に向かって縮径するテーパ部
を受け部に形成し、配管の終端から送られるピグを受け
部内で停止させることを特徴とするピグ停止装置。3. A housing having a chamber, and a sleeve fixed to the housing and having a receiving portion, wherein the housing has an inlet connected to an end of a pipe arranged on the same axis as the sleeve and an inside of the chamber. The sleeve has an outlet for discharging fluid, and the sleeve has an inner tube portion extending into the chamber, a connecting portion extending outside of the housing, and a loading port formed at one end of the receiving portion communicating with the chamber. A pig stop device characterized in that a tapered portion whose diameter is reduced from the loading port in the traveling direction of the pig is formed in the receiving portion and the pig fed from the end of the pipe is stopped in the receiving portion.
ンジ部を備え、内管部はフランジ部からチャンバ内に延
び、連結部はフランジ部からハウジングの外側に延びる
請求項3に記載のピグ停止装置。4. The pig stop device according to claim 3, wherein the sleeve includes a flange portion fixed to the housing, the inner pipe portion extends from the flange portion into the chamber, and the connection portion extends from the flange portion to an outside of the housing.
ングに固定されかつ受け部を有するスリーブとを備え、
ハウジングは、スリーブと同一軸線上に配置された配管
の終端に接続される入口と、チャンバ内に流体を供給す
る供給口と、チャンバ内の流体を排出する排出口とを有
し、スリーブは、チャンバに連絡する受け部の一端に形
成された装填口と、配管の始端に接続されかつ受け部の
他端に形成された発射口とを有し、装填口から発射口に
向かって縮径するテーパ部を受け部に形成し、供給口か
らチャンバ内に流体圧力を加えて、受け部内に配置した
ピグを発射口から配管内に圧送し、配管の終端から送ら
れるピグを受け部内で停止させることを特徴とするピグ
発着ステーション。5. A housing having a chamber, and a sleeve fixed to the housing and having a receiving portion,
The housing has an inlet connected to the end of a pipe arranged on the same axis as the sleeve, a supply port for supplying a fluid into the chamber, and a discharge port for discharging the fluid in the chamber. It has a loading port formed at one end of the receiving part that communicates with the chamber, and a launching port formed at the other end of the receiving part that is connected to the starting end of the pipe, and the diameter decreases from the loading port toward the launching port. A tapered portion is formed in the receiving portion, fluid pressure is applied from the supply port to the chamber, the pig arranged in the receiving portion is pressure-fed into the pipe from the firing port, and the pig fed from the end of the pipe is stopped in the receiving portion. A pig departure / arrival station characterized by this.
射口に連続する直管部を受け部に形成した請求項5に記
載のピグ発着ステーション。6. The pig landing station according to claim 5, wherein the straight pipe portion connected to the same axis as the taper portion and continuous with the launch port is formed in the receiving portion.
と、ハウジングの外側に延びる連結部とを備える請求項
5又は6に記載のピグ発着ステーション。7. The pig landing station according to claim 5, wherein the sleeve includes an inner pipe portion extending into the chamber, and a connecting portion extending outside the housing.
ンジ部を備え、内管部はフランジ部からチャンバ内に延
び、連結部はフランジ部からハウジングの外側に延びる
請求項7に記載のピグ発着ステーション。8. The pig landing station according to claim 7, wherein the sleeve includes a flange portion fixed to the housing, the inner pipe portion extends from the flange portion into the chamber, and the connection portion extends from the flange portion to an outside of the housing.
よりも大きく、発射口の内径はピグのスカート部の外径
よりも僅かに小さい請求項5〜8の何れか1項に記載の
ピグ発着ステーション。9. The inner diameter of the loading port is larger than the outer diameter of the skirt portion of the pig, and the inner diameter of the firing port is slightly smaller than the outer diameter of the skirt portion of the pig. Pig departure and arrival station.
に連絡させる1又は2以上の横孔をスリーブに形成する
請求項5〜9の何れか1項に記載のピグ発着ステーショ
ン。10. The pig landing station according to claim 5, wherein one or more lateral holes are formed in the sleeve to connect the fluid pressure in the receiving portion to the outside of the sleeve.
横孔を形成し、受け部内のピグの前方の流体圧力は横孔
及びチャンバを通じて排出口に連絡する請求項10に記
載のピグ発着ステーション。11. The method according to claim 10, wherein a lateral hole is formed in the vicinity of the connecting portion between the tapered portion and the straight pipe portion, and the fluid pressure in front of the pig in the receiving portion communicates with the outlet through the lateral hole and the chamber. Pig departure and arrival station.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31386897A JP3493377B2 (en) | 1997-11-14 | 1997-11-14 | Pig launching device, pig stopping device, and pig launching and landing station |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31386897A JP3493377B2 (en) | 1997-11-14 | 1997-11-14 | Pig launching device, pig stopping device, and pig launching and landing station |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11138118A JPH11138118A (en) | 1999-05-25 |
JP3493377B2 true JP3493377B2 (en) | 2004-02-03 |
Family
ID=18046479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31386897A Expired - Fee Related JP3493377B2 (en) | 1997-11-14 | 1997-11-14 | Pig launching device, pig stopping device, and pig launching and landing station |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3493377B2 (en) |
-
1997
- 1997-11-14 JP JP31386897A patent/JP3493377B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH11138118A (en) | 1999-05-25 |
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