JPS61289915A - Manufacture of strainer pipe - Google Patents
Manufacture of strainer pipeInfo
- Publication number
- JPS61289915A JPS61289915A JP13354385A JP13354385A JPS61289915A JP S61289915 A JPS61289915 A JP S61289915A JP 13354385 A JP13354385 A JP 13354385A JP 13354385 A JP13354385 A JP 13354385A JP S61289915 A JPS61289915 A JP S61289915A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- pipe
- strainer
- strength
- projections
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0826—Preparing the edges of the metal sheet with the aim of having some effect on the weld
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/156—Making tubes with wall irregularities
- B21C37/157—Perforations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は石油井、ガス井、水弁、地熱井などの各種井
戸に使用されるストレーナ管の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for manufacturing strainer pipes used in various wells such as oil wells, gas wells, water valves, and geothermal wells.
〈従来の技術〉
石油、ガス、水、地熱などを取出す採取用井戸において
は、取出そうとする流体を効率よく集め、また弁壁の崩
落を防止したシ、岩盤被層の噴出を防止したシする目的
で、周壁に多数の透孔の形成されたいわゆるストレーナ
管が使用される。また、石油井やガス井の回復用に加圧
流体を注入したり、地熱発電に使用した後の凝縮水を地
中に還元したシ、地盤改良用のモルタル、水ガラスなど
を注入したりするための注入用井戸においても、このス
トレーナ管が使用される。第4図(イ)〜(へ)に従来
のストレーナ管の側面形状、第5図(イ)〜(へ)に第
4図管の各軸横断面形状、第6図(イ)〜(へ)に同じ
く軸横断面形状を示す。<Conventional technology> In extraction wells for extracting oil, gas, water, geothermal heat, etc., wells that efficiently collect the fluid to be extracted and prevent valve walls from collapsing and rock cover from blowing out are used. For this purpose, a so-called strainer tube with a large number of through holes formed in the peripheral wall is used. In addition, pressurized fluids are injected for recovery of oil and gas wells, condensed water is returned to the ground after being used for geothermal power generation, mortar for ground improvement, and water glass is injected. This strainer tube is also used in injection wells for Figures 4 (A) to (F) show the side shape of a conventional strainer tube, Figures 5 (A) to (F) show the cross-sectional shape of each axis of the tube in Figure 4, and Figures 6 (A) to (F). ) also shows the axial cross-sectional shape.
(イ)は透孔として円孔を形成したもの、(嗜は軸方向
の長円孔を形成したものである。(ハ)は管局方向の切
込みを入れたもので、管軸に対して直角に切込みの入っ
たものと、斜めに入ったものがある。(A) is a hole with a round hole formed as a through hole, (B) is a hole with an oblong hole in the axial direction. (C) is a hole with a notch in the direction of the tube, and is in line with the axis of the tube. Some have cuts at right angles, while others have cuts at an angle.
に)は周方向に入れた切込みに対しその片側を管内側へ
押し込んだもの、(ホ)は切込みの間の部分全管内側へ
押し込んだものである。また、(へ)は断面三角形状の
条&il一定の間隔でらせん状に巻き、その内側に軸方
向の連結ロッドを溶接により接合して管体を構成したも
のである。第6図における実線矢印は採取用井戸に用い
た場合の流体の流れで、管外から管内への流れ方向を示
し、破線矢印は注入用井戸に用いた場合の流体の流れで
、管内から管外への流れ方向を示している。In), one side of the notch made in the circumferential direction is pushed into the inside of the tube, and in (e), the entire portion between the notches is pushed into the inside of the tube. In addition, (f) is a tube having a triangular cross-section, which is wound spirally at regular intervals, and an axial connecting rod is welded to the inner side of the spiral. The solid arrows in Figure 6 indicate the flow of fluid when used in a sampling well, indicating the flow direction from outside the pipe to the inside of the pipe, and the dashed arrows indicate the flow of fluid when used in an injection well, from inside the pipe to the inside of the pipe. Indicates the direction of outward flow.
従来、これらのストレーナ管の製造は、(イ)((ロ)
については管体に穿孔加工を施し、(ハ)については管
。Traditionally, the manufacturing of these strainer tubes has been carried out by (a) (b)
For (c), the tube body is perforated, and for (c), it is a tube.
体に切削加工を施し、に)(ホ)については管体に切削
加工とプレス加工とを施し、(へ)については前述した
とおり条wIヲらせん状に巻い死後、連結ロンドラ溶接
することによシそれぞれ行われていた。For (e), the tube body is subjected to cutting and press processing, and for (f), the threads are wound into a spiral shape as described above, and then connected by londra welding after death. Both were carried out separately.
一般に、ストレーナ管ではその透孔を流体が通過する際
の抵抗が大きいと、当然のことながら流体の採取能力や
注入能力の低下全来たす。また、この透孔においては、
キャビテーションエロージョンを生じ、これが管を破壊
させ、井戸の寿命を著しく短縮するとざわれている。前
者の圧力損失は、透孔のエツジ部において生じる流れの
剥離や渦形成が原因とされ、後者のキャビテーションエ
ロージョンによる@壊も、透孔のエツジ部で発生した渦
流による圧力低下のためにキャビテーションが発生し、
これが、透孔a過後の流路拡大に伴う圧力回復のだめに
崩壊し、エロージョンを進行させるだめと考えられてい
る。したがって、透孔におけるこれらの現象を防止する
には、透孔のエツジ部を流体の入側、出側の双方におい
て面取りにより除去してしまうのが有効とされる。しか
しながら、従来のJ!!!造方法では、両側のエツジ部
を面取りしたストレーナ管を一;9!l造することは容
易でない。Generally, in a strainer tube, if the resistance when fluid passes through its through holes is large, the fluid collection and injection capabilities will naturally be reduced. Also, in this hole,
It is said that cavitation erosion occurs, which destroys the tube and significantly shortens the life of the well. The former pressure loss is caused by flow separation and vortex formation that occur at the edge of the hole, and the latter, cavitation erosion, is caused by cavitation due to the pressure drop caused by the vortex generated at the edge of the hole. occurs,
This is considered to be the cause of the collapse of the pressure recovery due to the expansion of the flow path after passing through the hole a, causing the erosion to proceed. Therefore, in order to prevent these phenomena in the through hole, it is considered effective to chamfer the edges of the through hole on both the fluid inlet and outlet sides. However, the conventional J! ! ! In the construction method, a strainer tube with chamfered edges on both sides is used. It is not easy to build one.
たとえば、管体に穿孔加工を施して製造する(イ)(ロ
)では、管外面側な面取りすることはまだ容易であるけ
れども、管内面側は非常に困爺である。切削加工やプレ
ス加工で透孔を形成する(ハ)〜(イ)についても、管
内面側における面取シ加工が円弦である。まだ、(ハ)
については条鋼の断面形状の選択によって両側ともエツ
ジのないものを製造することができるが、たとえ面取シ
ができたとしても管内に設けられた連結ロッドが圧力損
失等の原因となり、期待するほどの効果は得られない。For example, in (a) and (b), in which the tube is manufactured by drilling holes, chamfering the outer surface of the tube is still easy, but chamfering the inner surface of the tube is extremely difficult. Regarding (c) to (a) where the through holes are formed by cutting or press working, the chamfering process on the inner surface of the tube is also circular. Not yet (ha)
It is possible to manufacture products with no edges on both sides by selecting the cross-sectional shape of the steel bar, but even if chamfering is possible, the connecting rod installed inside the pipe will cause pressure loss, etc., and it will not be as long as expected. effect cannot be obtained.
熱論、この(ハ)において連結ロンドを細くすれば、圧
力損失等は改善されるが、その代りに管軸方向の強度が
低下し、高温高圧下で使用される地熱井で1は寿命の短
縮を招く。Thermal theory, in this (c), if the connecting iron is made thinner, pressure loss etc. will be improved, but at the cost of this, the strength in the tube axis direction will decrease, and in geothermal wells used under high temperature and high pressure, 1 will shorten the lifespan. invite.
本発明の目的は、管内外面ともにエツジ部の面取シのさ
れた高性能なストレーナ管を簡単に、かつ強度低下をき
だすことなく製造し得る方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for easily manufacturing a high-performance strainer tube with chamfered edges on both the inner and outer surfaces of the tube without deteriorating its strength.
本発明の方法は、長尺材でその少なくとも一側に所定の
間隔で突起を有する金属材をその突起が隣接するループ
に接触するようらせん状に巻回し、その接触部’fcR
J接して突起間にスリットの形成されたストレーナ管と
なす点に特徴がある。In the method of the present invention, a long metal material having protrusions at predetermined intervals on at least one side is wound in a spiral shape so that the protrusions contact adjacent loops, and the contact portion 'fcR
The feature is that the strainer tube is in J contact with a slit between the protrusions.
すなわち、本発明の方法によれば、素材である長尺金属
材にスリットとなる切込部分を、らせん状に巻回する前
の直線材料の段階で形成し、面取り加工もこの段階で行
うことができるので、管内面側にも簡単に面取り部を付
与することができるのである。まだ巻回成形後、隣接す
るループどおし全直接溶接によシ一体化して管体となし
、第4〜6図(へ)のストレーナ管の連結ロッドに相当
する部材を使用1〜ないから、十分な管軸方向の強度が
得られてなおかつ圧力損失等を招来することが殆どない
。That is, according to the method of the present invention, a cut portion that becomes a slit is formed in a long metal material as a raw material at the stage of a straight material before being spirally wound, and chamfering is also performed at this stage. Therefore, a chamfer can be easily provided on the inner surface of the tube. After winding and forming, the adjacent loops are all directly welded to form a pipe body, and the members corresponding to the connecting rods of the strainer pipes in Figures 4 to 6 (f) are not used. , sufficient strength in the direction of the tube axis can be obtained, and there is almost no pressure loss or the like.
以下、図面を参照しながら本発明を更に詳細に説明する
。Hereinafter, the present invention will be explained in more detail with reference to the drawings.
第1図は帯状材料の両側対称位置に矩形片状の突起(1
)を有する長尺金属材(21を、隣接するループの突起
(1)(11が互いに接触するよう、らせん状に巻回す
る態様を示している。Figure 1 shows rectangular piece-shaped protrusions (1
) is spirally wound so that the protrusions (1) (11) of adjacent loops are in contact with each other.
ここで、長尺金属材(2)の素材としては耐食性、強度
に優れた鋼おるいは非鉄金属を使用し、具体的にはステ
ンレス鋼、合金鋼、インコネル、モネル、ハステロイ、
チタニウム等である。Here, as the material for the long metal material (2), steel or non-ferrous metal with excellent corrosion resistance and strength is used. Specifically, stainless steel, alloy steel, Inconel, Monel, Hastelloy,
Titanium etc.
突起(1)全形成するには、突起(1)となる部分を残
して材料両側を切削等により除去する。除去部分(3)
はストレーナ管完成後にスリット(4)(透孔)となシ
、除去部分の材料全体の広さに占める割合がストレーナ
管の開孔率を決定することになるので、必要とする開孔
率に応じて除去部分(3)の巾、長さおよびピッチを決
めなければならない。To form the entire protrusion (1), both sides of the material are removed by cutting or the like, leaving only the portion that will become the protrusion (1). Removal part (3)
The slit (4) (through hole) is removed after the strainer pipe is completed, and the ratio of the removed portion to the total area of the material determines the porosity of the strainer pipe, so it is necessary to adjust the porosity to the required porosity. The width, length and pitch of the removed portion (3) must be determined accordingly.
両側除去部分(3)(3)に挾まれた材料の両エツジ部
(5)(5)は、必要に応じて面取り加工を行うが、材
料をらせん状に巻回する前にこの加工を行うことができ
るので、管内外面のいずれの側も、また平面形状にも丸
みをもった形状にも簡単に加工できる。Both edge portions (5) (5) of the material sandwiched between both side removed portions (3) (3) are chamfered if necessary, but this processing is performed before the material is spirally wound. Therefore, both the inner and outer surfaces of the tube can be easily processed into a planar shape or a rounded shape.
第1図には両エツジ部(5)を断面半円形状に面取りし
た例を示しである。FIG. 1 shows an example in which both edge portions (5) are chamfered to have a semicircular cross section.
巻回した材料に対しては、隣接するループの各突起(1
t(nki接によ多接合する。For wound material, each protrusion (1
t(nki junction).
溶接手段は抵抗溶接がその溶接速度及び浴接変形の点か
ら望ましいが、M工G、TIGなどのガヌアーク浴接で
もよい。As for the welding means, resistance welding is preferable from the viewpoint of welding speed and bath welding deformation, but Ganu-arc bath welding such as M-G or TIG may also be used.
溶接を終えた管状材料は、必要に応じて所定長さに切断
し、その一方の端部に閉塞部材、他方の端部に接続部材
を装着して、製品ストレーナ管となす。The welded tubular material is cut to a predetermined length as necessary, and a closing member is attached to one end and a connecting member is attached to the other end to form a product strainer tube.
製品寸法は外径が50〜600M、肉厚が2.0〜16
.0M、長さが3〜12m1開孔率が8〜50%の範囲
内で選定されるのが通例である。Product dimensions are outer diameter 50~600M, wall thickness 2.0~16
.. It is customary to select a material with a length of 0 m, a length of 3 to 12 m, and a porosity of 8 to 50%.
第2図は本発明の他の態様を示しだもので、帯状材料の
片側に所定間隔で突、起(1)の形成された長尺金属材
(21を使用した例を示している。FIG. 2 shows another embodiment of the present invention, and shows an example in which a long metal material (21) is used, in which protrusions (1) are formed at predetermined intervals on one side of a strip-shaped material.
前述の第1図例では、巻回加工の際に隣接するループど
おして突起(1) (11の位置を完全に一致させる必
要があり、そのために加工精度を高めたり、まだ突起(
1)の間隔精度を高める必要が生じるが、この第2図例
では突起(])が、隣接するIV−プの凹凸のない側縁
と接触するので、突起形成時、巻回加工時に多少の精度
誤差は許容できる利点がある。In the above-mentioned example in Fig. 1, it is necessary to perfectly align the positions of the protrusions (1) (11) between adjacent loops during winding processing, and for this purpose, it is necessary to increase the processing accuracy and to make sure that the protrusions (11) are not yet aligned.
It is necessary to improve the spacing accuracy in step 1), but in the example shown in Fig. 2, the protrusion (]) comes into contact with the smooth side edge of the adjacent IV-P, so there may be some slight difference when forming the protrusion or during the winding process. There is an advantage that the accuracy error is acceptable.
しかし、面取りは必要に応じて凹凸のないフラットな側
縁の方にも行わなければならない。However, if necessary, chamfering must also be performed on flat side edges without irregularities.
また、第3図は線状乃至棒状の長尺金属材(2)を使用
した例を示しておシ、その突起(1)として節(ふし)
が設けられている。In addition, Fig. 3 shows an example in which a linear or rod-shaped long metal material (2) is used, and the protrusion (1) is a knot.
is provided.
この部付材料の製造方法としては、節部を溶接等にて別
途接合する方法でもよいが、節部の外径と略々同じ外径
の素材に、節となる部分を残して圧延等の縮径加工を施
す方法のほうが強度面、精度面等の点で推奨される。As a manufacturing method for this material, the joints may be joined separately by welding, etc., but the material has an outer diameter that is approximately the same as the outer diameter of the joint, and the material is rolled, etc., leaving the part that will become the joint. The method of diameter reduction is recommended in terms of strength, accuracy, etc.
この例で重要なのは、所要の一向幅を有するスリット(
4)を形成するため、材料全巻回した時に隣接ループ間
で節同志が接触するのを極力回避することであシ、この
ために節と節の間隔tを次の条件を満足するよう決定す
るのが良い。What is important in this example is that the slit (
4), it is necessary to avoid contact of nodes between adjacent loops as much as possible when the material is fully wound, and for this purpose, the interval t between nodes is determined so as to satisfy the following condition. It's good.
ただし、Dニストレーナ管の平均径
n:正の整数
溶接は第1図、第2図例の場合と同様に抵抗浴接、M工
G浴接、T工G浴接等を使用する。However, for welding a D strainer tube with a positive integer average diameter n, resistance bath welding, M work G bath welding, T work G bath welding, etc. are used as in the case of the examples shown in FIGS. 1 and 2.
また、第3図例に類似するものとして、部具外の部分の
外径と同じ外径の材料全所定間隔で一方向に圧潰して、
片側に半球形状の突起全形成したものを使用する方法で
もよい。In addition, as something similar to the example in Fig. 3, all the materials having the same outer diameter as the outer diameter of the part outside the part are crushed in one direction at a predetermined interval,
A method in which a hemispherical protrusion is entirely formed on one side may be used.
更にまた、丸棒の代シに角棒等を使用してもよいことは
訂うまでもない。Furthermore, it goes without saying that a square bar or the like may be used in place of the round bar.
第3図例の場合は、長尺金属材(2)の突起(1)と突
起(1)の間の部分が断面円形であるので・、この部分
に面取シを行う手間が省略できる。In the case of the example shown in FIG. 3, since the portion between the protrusions (1) of the elongated metal material (2) has a circular cross section, the effort of chamfering this portion can be omitted.
透孔(4)(スリット)の前局方向両端部は流体の運動
にさほど影響しない(第6図に示すように流体は管軸方
向と管径方向との合成運動を主に行う)ので、面取1行
う利点は少ない。Both ends of the through hole (4) (slit) in the front direction do not have much influence on the movement of the fluid (as shown in Fig. 6, the fluid mainly performs a combined movement in the tube axis direction and the tube diameter direction). There are few advantages to chamfering 1.
本発明の方法におい、て、突起付材料の製造、巻回加工
、溶接は各々別工程で行ってもよいし、全工程あるいは
一部工程を連続的に行ってもよい。In the method of the present invention, the production, winding, and welding of the material with protrusions may be performed in separate steps, or all or part of the steps may be performed continuously.
長さがaooox、外径が89期、厚みが5.5厘で開
孔率が10%のストレーナ管を第1図および第3図の方
法で製造し、これらと、第4〜6図(イ)〜(へ)に示
す従来法で製造した同一仕様のストレーナ管とを、内径
185Mの採取用および注入用井戸に使用したときの、
透孔−個についての抵抗係数ζ、ヌトレーナ管全体とし
ての管摩擦係数χならびに管軸方向の降伏耐力について
比較した。抵抗係数ζは次式により求めた。A strainer tube with a length of aooox, an outer diameter of 89 mm, a thickness of 5.5 mm, and a porosity of 10% was manufactured by the method shown in Figs. 1 and 3, and in addition to these, Figs. When strainer tubes with the same specifications manufactured by the conventional method shown in a) to (f) are used in sampling and injection wells with an inner diameter of 185M,
A comparison was made regarding the resistance coefficient ζ for each through hole, the pipe friction coefficient χ for the Nutrana pipe as a whole, and the yield strength in the pipe axial direction. The resistance coefficient ζ was determined by the following formula.
ただし、PO:ヌトレーナ管外圧力の測定値(Pa)
P1ニストレーナ管内圧力の測定値
(Pa)
ρ :流体の密度(kg/d)
■ :透孔における流速の測定値(%)また、管摩擦係
数χは次のようにして求めた。However, PO: Measured pressure outside the Nutrainer tube (Pa) P1 Measured pressure inside the Nutrainer tube (Pa) ρ: Fluid density (kg/d) ■: Measured flow velocity at the through hole (%) The friction coefficient χ was determined as follows.
ただし、D=ニストレーナの内径(W)■m: ストレ
ーナ管内の平均流速の
測定値(m/8)
へPニストレーナ管内の圧力損失の測
定値(Pa)
L:圧力損失測定長(m)
素材は全て炭素鋼全使用し、第4〜6図(へ)の従来例
については連結ロッドの外径が4.0 Mと50厘の2
種類のストレーナ管についての試験を行った(ロッド本
数は各々18本)。However, D = Inner diameter of the strainer (W) m: Measured value of average flow velocity in the strainer pipe (m/8) Measured value of pressure drop in the P strainer pipe (Pa) L: Pressure loss measurement length (m) All materials are carbon steel, and in the conventional example shown in Figures 4 to 6 (f), the outer diameter of the connecting rod is 4.0 M and 50 mm.
Tests were conducted on different types of strainer tubes (18 rods each).
密接は全て抵抗密接にて行い、引張試験においては第3
図に示すものを除いては浴接部からの破断1はなかった
。All contact tests were performed with resistance contact, and in the tensile test, the third
There were no breaks 1 from the bath contact area except for the one shown in the figure.
結果を表に示す。The results are shown in the table.
従来例においては第4〜6図(へ)を除き、管内面側に
面取り加工を行うのは加工手間の点から事実上不可能で
あった。しだがって面取り側が流体入側に位置する注入
用として使用した場合におしなべて抵抗係数値が高い。In the conventional example, except for those shown in FIGS. 4 to 6 (f), it is virtually impossible to chamfer the inner surface of the tube due to the labor involved. Therefore, when used for injection with the chamfered side located on the fluid inlet side, the resistance coefficient value is generally high.
まだ(へ)については、他の従来例に較べれば、注入用
として使用した場合の抵抗係数値が小さいものの、連結
ロッドが管内側にあって抵抗増大の原因になっているた
め、抵抗係数値はど管摩擦係数値は良化しておらず、こ
の管摩擦係数値を極端に低下させようとする場合は連結
ロッドを細くしなければならず、その結果として管軸方
向の引張強さが低下する。Although the resistance coefficient value of Matada (to) is smaller when used for injection compared to other conventional examples, the resistance coefficient value is lower because the connecting rod is located inside the tube and causes an increase in resistance. The friction coefficient value of the tube has not improved, and if you try to drastically reduce the friction coefficient value of the tube, you will have to make the connecting rod thinner, and as a result, the tensile strength in the tube axis direction will decrease. do.
これに対し、本発明例は第1図のものについては、従来
例の中でも特に良好な引張耐力を有する(第4〜6図(
イ)(ロ))に匹敵する強度を保有する。On the other hand, the example of the present invention has particularly good tensile strength among the conventional examples as compared to the one shown in Figure 1 (see Figures 4 to 6).
A) Possesses strength comparable to (b)).
まだ、抵抗係数値を比較した場合、第1図の管外側に面
取りを行ったものは採取用として使用した場合に、どの
従来例よシも低い抵抗係数値を示し、管内側に面取シを
行ったものは注入用として使用した場合に、どの従来例
よりも低い抵抗係数値を示し、内外面において面取りを
行ったものは採取用、注入用のいずれに使用した場合に
も最低の抵抗係数値を保有している。また、管摩擦係数
λも従来例(イ)〜(ハ)と同等値であって何等問題と
ならない。However, when comparing the resistance coefficient values, the pipe with a chamfer on the outside of the pipe shown in Figure 1 shows a lower resistance coefficient value than any of the conventional pipes when used for sampling, while the pipe with a chamfer on the inside of the pipe shows a lower resistance coefficient value when used for sampling. The one with chamfered inner and outer surfaces has the lowest resistance coefficient when used for injection than any conventional example, and the one with chamfered inner and outer surfaces has the lowest resistance when used for both sampling and injection. Holds coefficient values. In addition, the tube friction coefficient λ is also the same value as the conventional examples (a) to (c), so there is no problem.
まだ、第3図のものは管軸方向の引張耐力が第1図のも
のよりも劣るが、抵抗係数値については第1図の管内外
面側に半円の面取りケ行ったものに匹敵し、管摩擦係数
χについてはこの第1図のものに次ぐ値を示している。Although the tensile strength of the tube in the axial direction of the tube shown in Figure 3 is still inferior to that of the tube shown in Figure 1, its resistance coefficient value is comparable to that of the tube with semicircular chamfers on the inner and outer surfaces of the tube shown in Figure 1. The pipe friction coefficient χ shows a value second only to that in FIG.
管摩擦係数χが第1図のものより劣るのは突起としての
節状大径部が圧力損失の原因になっているためと考えら
れるが、管内に連結ロッドを配したものほど、大きな障
害にはなっていない。The reason why the pipe friction coefficient χ is inferior to that in Figure 1 is thought to be because the nodular large-diameter part as a protrusion causes pressure loss. It's not.
以上の説明から明らかなように、本発明の方法は、材料
をらせん状に巻回する前の直線状態のときに事実上透孔
形成を終了させ、その直線材料に面取り加工を行うこと
になるので、管の内外面を問わず加工が容易であり、し
かも透孔を材料のエツジ部に形成するので、材料全体に
多数の透孔を打ち抜き、これらの透孔の周囲全てに面取
り加工を施しだ後、らせん状に巻回する場合と比較した
としても、加工工数は大巾に少ない。また、密接により
隣接ループが一体化されるので、強度的な面でも十分な
性能を保証する。したがって、本発明によれば諸性能に
優れたストレーナ管が少ない] ス)TEAでき、低価
格で優秀なヌトレー−)−%’を供給できることになる
。As is clear from the above description, the method of the present invention virtually ends the hole formation when the material is in a straight state before it is spirally wound, and chamfers the straight material. Therefore, it is easy to process both the inner and outer surfaces of the pipe, and since the holes are formed at the edges of the material, many holes are punched throughout the material and all of the peripheries of these holes are chamfered. After that, the number of processing steps is significantly less than when winding it in a spiral shape. In addition, since adjacent loops are integrated by close contact, sufficient performance is guaranteed in terms of strength. Therefore, according to the present invention, there are only a few strainer tubes with excellent performance.TEA can be performed, and excellent Nutley-%' can be supplied at a low price.
第1図〜第3図は本発明の方法の態様を一部破断て模式
的に例示したもので、第1図および第2図は斜視図、第
3図は側面図である。第4〜6図(イ)〜(へ)は従来
の方法で製造されたストレーナ管の形状の説明図で、第
4図は正面図、第5図は軸横断面図、第6図は軸群断面
図である。
図中、1:突起、2:長尺金属材、8:除去部分、4:
透孔(スリット)、5:エツジ部。1 to 3 are partially cutaway schematic illustrations of aspects of the method of the present invention, with FIGS. 1 and 2 being perspective views, and FIG. 3 being a side view. Figures 4 to 6 (A) to (F) are explanatory diagrams of the shape of strainer tubes manufactured by conventional methods. Figure 4 is a front view, Figure 5 is a cross-sectional view of the shaft, and Figure 6 is a shaft cross-sectional view. FIG. In the figure, 1: protrusion, 2: long metal material, 8: removed part, 4:
Through hole (slit), 5: Edge part.
Claims (4)
を有する金属材をその突起が隣接するループに接触する
ようらせん状に巻回し、その接触部を溶接して突起間に
スリットの形成されたストレーナ管となすことを特徴と
するストレーナ管の製造方法。(1) A long metal material having protrusions at predetermined intervals on at least one side is wound spirally so that the protrusions contact adjacent loops, and the contact portions are welded to form slits between the protrusions. A method for manufacturing a strainer tube, comprising forming a strainer tube.
許請求の範囲第1項に記載のストレーナ管の製造方法。(2) The method for manufacturing a strainer tube according to claim 1, wherein the long metal material is a band-shaped material.
する特許請求の範囲第1項に記載のストレーナ管の製造
方法。(3) The method for manufacturing a strainer tube according to claim 1, wherein the long metal material is a rod having a circular cross section.
とを特徴とする特許請求の範囲第3項に記載のストレー
ナ管の製造方法。(4) The method for manufacturing a strainer pipe according to claim 3, wherein the bar material has a knot-like large diameter portion formed as a protrusion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13354385A JPS61289915A (en) | 1985-06-18 | 1985-06-18 | Manufacture of strainer pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13354385A JPS61289915A (en) | 1985-06-18 | 1985-06-18 | Manufacture of strainer pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61289915A true JPS61289915A (en) | 1986-12-19 |
Family
ID=15107270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13354385A Pending JPS61289915A (en) | 1985-06-18 | 1985-06-18 | Manufacture of strainer pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61289915A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0441016A (en) * | 1990-06-08 | 1992-02-12 | Nitto Denko Corp | Manufacture of perforated pipe |
US5128028A (en) * | 1988-08-12 | 1992-07-07 | E & M Lamort | Sieve for paper pulp strainer and classifier |
US5293677A (en) * | 1991-04-17 | 1994-03-15 | E & M Lamort | Process of making a cylindrical slotted sieve for paper pulp strainer |
WO2000047867A1 (en) * | 1999-02-15 | 2000-08-17 | Kjartan Roaldsnes | Sandfilter device for use in the recovery of oil, gas and water |
EP1690608A1 (en) * | 2005-02-11 | 2006-08-16 | Benteler Automobiltechnik GmbH | Method and apparatus for the manufacture of pipes |
JP2022553449A (en) * | 2021-04-26 | 2022-12-22 | 中▲鉄▼九局集▲団▼第七工程有限公司 | External expansion pipe construction method for drilling in the mining zone |
-
1985
- 1985-06-18 JP JP13354385A patent/JPS61289915A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5128028A (en) * | 1988-08-12 | 1992-07-07 | E & M Lamort | Sieve for paper pulp strainer and classifier |
JPH0441016A (en) * | 1990-06-08 | 1992-02-12 | Nitto Denko Corp | Manufacture of perforated pipe |
US5293677A (en) * | 1991-04-17 | 1994-03-15 | E & M Lamort | Process of making a cylindrical slotted sieve for paper pulp strainer |
WO2000047867A1 (en) * | 1999-02-15 | 2000-08-17 | Kjartan Roaldsnes | Sandfilter device for use in the recovery of oil, gas and water |
GB2364540A (en) * | 1999-02-15 | 2002-01-30 | Kjartan Roaldsnes | Sandfilter device for use in the recovery of oil gas and water |
EP1690608A1 (en) * | 2005-02-11 | 2006-08-16 | Benteler Automobiltechnik GmbH | Method and apparatus for the manufacture of pipes |
JP2022553449A (en) * | 2021-04-26 | 2022-12-22 | 中▲鉄▼九局集▲団▼第七工程有限公司 | External expansion pipe construction method for drilling in the mining zone |
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