1259250 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種減壓裝置，尤其是關於一種應用 於高壓差閥的減壓裝置，而且此種減壓裝置係由數個減壓 碟片所組成。 【先前技術】 ^咼差[閥（出砂Differentiai pressure vaive)係應用於高 壓、高溫流體輸送管線系統，其主要目的在於利ς'閥流量 的調節、流速的控制及壓力的減低等多重特性功能，將 線流體的壓力調降至一定標準’以供系統循環使用，且流 =流須穩定’以避免管線輸送流體時發生異； 狀因此於尚壓差閥中配置減壓裝置以符合所需之目的 在減壓裝置中’流體之連續路徑若無—定 „並藉由表面磨擦增加壓力; 限，因此就必須增加流道路徑的折彎數替代。：ΐ: 利號碼US 6,718,633即為利用單面連續折彎流 出口處輯擴散緩衝面；美國專利號碼仍】 :用二及，立體穿透式連續折-流道以達成灰 錯及徑向放射狀連續折f立體利用方孔層心 /…弓心， 體穿透式流道以達成減壓。 , 人將閥開度增加及流量提高 必須減少，以符合閥控制的 4E的折芳路捏 則需要設計多種不同路合控㈣作之需求， 之碟片再予以堆疊；例如美國專 1259250 利號馬US 6,701，957即為平面漸進式迴旋流道，路徑 孔設計以增加壓損；美國專利號碼US 6,244,297即為利用目 堆豐碟片產生角錐孔洞及層間立體穿透式連續折彎流道. 利Γυ“,095，196即為以堆疊碟片產生單面i向 、片―、折弓流道，以及美國專利號碼1^11£36,984即為 孔及徑向折彎層間立體穿读+ '' 減壓裝置_困===力。如此;:來將增加 加製造成本。p *至而要將碟片加工，因此就會增 【發明内容】 結槿技術之不足，本發明乃提供—種易於製造i 、、口冓間单的減壓裝置，可將1 古 個多折蠻之泣駚、，、又於同差壓闕中，形成複_ 仙體通路，以降低流經減壓裝置之流體之壓力 以降2明提供—種減㈣置，其可設置於高差Μ閥中， 數個減===流體㈣力。這個簡置係由福 口，而成，每個碟片更包含有-穿透孔 凹槽电盘複數：ι面。母個平面又分別設有複數個環向 十曰、、且興複數個徑向凹槽組，i 相對於穿透孔口 3戸a八处八 衣向凹4日組包含有 向凹样也則勺入f 複數個環向凹槽，而每個徑 凹槽；由二:目！於穿透孔口呈徑向分佈之複數個徑向 數個環向凹槽與相鄰之另 ：二：碟片之稷 錯，而在兩相鄰磾片門數個徑向凹槽彼此交 不郇碟片間形成稷數個多折彎之_ _、s # 降低流經減麼裝置之流體之歷力。斤弓之机體通路’以 本發明之另一實施例係提供—種減愿碟片組，其包含 1259250 :片第：：ί、第二！片、及第三碟片。藉由將複數個減壓 數個多折：，以使侍在兩組相鄰的減壓碟片組之間形成複 力。流體通路’以降低流經減_置之流體之魔 -、第- ’ ί:碟片、第二碟片、及第三碟片分別具有第 呈右透孔口且彼此相對應。每個第-碟片 二第向孔洞組，其中每個環向孔洞組包含有相對 碟月且：1環向分佈之複數個環向孔洞。每個第二 對於:以向孔洞組’其中每個徑向孔洞組包含相 堆蟲C 徑向分佈之複數個徑向孔洞。藉由 組且並:、π二碟片及第三碟片可形成-減壓碟片 組之㈣Γ Η堆豐複數個減壓碟片組’使其中一減壓碟片 Α灵數個裱向孔洞與相鄰之另一減壓碟片組 二可在兩相鄰減壓碟片組間形成複數Γ; =之 >巩體通路，以降低流經複數個減壓碟片組之 Μ力。 【實施方式】 =本發明之上述和其他目的、特徵、以及優點能更 月頒易ΙΪ ’下文特舉出較佳實施例，並配合 詳細說明如下。 | α八# ，先參考1Μ ’其係應用於高壓、高溫流體輸送 統的咼f壓閥1〇〇的剖面立體圖’其主要係被用來調節流 體的流量、㈣流體的流速及減低流體的壓力。流體可 箭號IN的箭頭方向流入，流經減壓裝置1〇，並透過減壓^ 置10使流體路徑產生變化，以降低流體之铁# 會再從箭號OTT的箭頭方向流出。 Ϊ259250 A明，著μ參考圖2關於本發明之減1裝置之干音Η太 發：的減壓裝置10係包含複數個減壓碟二：：：二 %為碟片υ。每個碟片1包含有一穿透孔口 =中或間 平面12以及一第-承；1Λ 啕穿透孔口 11、一第一 合，藉由複數個碟片1彼此堆疊組 J以形成本發明之減壓裝置Η)。 —碑Kt:3A與圖4A’其分別顯示減Μ裝置101中之 碟片1的俯視圖以及其局部放大圖。碟片！置:二：： 2上具有複數個環向凹槽組12〇，並且每一的：-千面 ，、有相等數量的環向凹槽12 衣向凹‘組120 對於穿透孔口 U呈璟内八庇_數個展向凹槽⑵係相 同形狀，並且每产/刀，同時其較佳者為各自具有不 其令Ϊ 與圖4Β分別顯示減遷裝置⑺ -平：片的仰視圖以及其局部放大圖。磾片！的第 —千面13上具有複數個徑向 #⑥片1的第 槽組130具有相日，、， ，並且每一徑向凹 凹槽mi/m凹槽131、132及⑶。徑向 兩端呈封閉;為二具 -端為開口，並且徑向凹槽丨3 3指向=:邊Λ 14之 之一端為開口。 ”片1之外核邊緣15 HJ著、明參考圖5，藉由將複數個碟片1堆h%“ 圖2所不），可使苴中一 卞乃1堆《之後（如 鄰之另一碟片it、、— /、 稷數個環向凹槽121與相 朱月1之複數個徑向凹槽1 錯。如圖7A或圖7B所—^ , Π2、133彼此交 槽m、U2 133分斤不展向凹槽121與相鄰的徑向凹 形成至少-個多拼f此^之後，可在兩相鄰碟片！之間 個夕折言之流體通路F1或心流體從穿透孔口 1259250 1 1向外流’藉由多折彎洽 整流及彎折产m 土體通路F1或F2中的直線流道 μ道減反，使得流體可穩定地減壓。 接著請同時參考圖3C與圖6,苴中冃^危甘士 碟片1之側視圖，圖6係圖2之"声、6中13 c係、其中之一 本發明之較佳實施例中，碟片部放ί圖。在 16盥至少一 —y 了已3有至少一定位凹孔 形狀传分中Λ凸塊17’且定位凹孔16與定位凸塊17之 第一平^ 12\對應。雖然圖6所顯示的定位凹孔16係位於 而在本發明之另，—而實定/::1:係位於第二平面13上，然 面13上而—貫也例中，疋位凹孔16亦可位於第二平 + ，而疋位凸塊17亦可位於第一平面12上。再者， Ϊ = 16與定位凸塊17的數量可依據不同控需 求，而作不同數量的變化。 < 市』< 而 當組合複數個碟片！以形成減壓裝置 碟…第-平面12與相鄰之另一碟片 ：、中之 可藉由定位凹孔16盥宏仞几楠η 心禾一十面13 ^ /、疋位凸塊17以不同角度對應組合，1259250 IX. Description of the Invention: [Technical Field] The present invention relates to a pressure reducing device, and more particularly to a pressure reducing device applied to a high pressure differential valve, and the pressure reducing device is composed of a plurality of pressure reducing disks The composition of the film. [Prior Art] [Differentiai pressure vaive] is applied to high-pressure, high-temperature fluid transfer pipeline systems. Its main purpose is to improve the valve flow regulation, flow rate control and pressure reduction. , the pressure of the line fluid is reduced to a certain standard 'for the system to recycle, and the flow = flow must be stabilized' to avoid the difference when the pipeline transports the fluid; therefore, the pressure reducing device is arranged in the pressure difference valve to meet the required The purpose of the 'decompression path of the fluid is not fixed in the decompression device and the pressure is increased by surface friction; therefore, it is necessary to increase the number of bends of the flow path instead.: ΐ: The profit number US 6,718,633 is utilized Single-sided continuous bending flow outlet at the end of the diffusion buffer surface; US patent number still]: use two and three-dimensional through-type continuous folding-flow path to achieve gray error and radial radial continuous folding f stereoscopic use of square hole layer /... Bow core, body penetrating flow channel to achieve decompression. People increase the valve opening and flow rate must be reduced, in order to meet the valve control of 4E, the Fenfang Road pinch needs to design a variety of different ways. (4) For the demand, the discs are stacked again; for example, the US 1259250, the US 6,701, 957 is a plane progressive swirling flow path, the path hole is designed to increase the pressure loss; the US patent number US 6,244,297 is the use of the mesh The rich disc produces a pyramidal hole and a three-dimensional transmissive continuous bending flow channel. Li Wei ", 095, 196 is a single-sided i-direction, sheet---------------------------------- ^11£36,984 is the stereoscopic reading between the hole and the radial bending layer + '' decompression device _ sleep === force. So; will increase the manufacturing cost. p* is to process the disc, so it will increase the content of the invention. The present invention provides a decompression device that is easy to manufacture i, and between the mouth and the mouth, and can be more than one In the same pressure, the complex _ celestial passage is formed to reduce the pressure of the fluid flowing through the decompression device to provide a reduction (four), which can be set to the height difference. In the sputum valve, several minus === fluid (four) force. This simple set is made up of Fukou, and each disc contains a through-hole. The mother planes are respectively provided with a plurality of circumferential tenths, and a plurality of radial groove groups, i is opposite to the penetrating orifices 3戸a, eight clothes, and the concave 4th group includes the directional concave samples. Then spoon into f a plurality of circumferential grooves, and each groove; by two: mesh! The plurality of radial circumferential grooves and the adjacent ones of the plurality of radial grooves are radially distributed in the penetrating aperture, and the plurality of radial grooves in the two adjacent cymbal gates intersect each other It is not necessary to form a plurality of bends between the discs _ _, s # to reduce the flow of fluid flowing through the device. In another embodiment of the present invention, a subtractive disc set is provided, which includes 1259250: a piece:: ί, a second! Film, and the third disc. By folding a plurality of decompressions several times, a force is formed between the two sets of adjacent decompression discs. The fluid passages </ RTI> reduce the flow of the fluid flowing through the subtraction-, the first-disc, the second disc, and the third disc, respectively, having the right-perforated apertures and corresponding to each other. Each of the first discs has a plurality of circumferential holes, wherein each of the annular holes includes a plurality of circumferential holes that are opposite to each other and are: 1 circumferentially distributed. Each of the second pairs: the pair of holes, wherein each of the sets of radial holes comprises a plurality of radial holes radially distributed by the pile C. By grouping and combining: π two-disc and third discs, the four-disc disc group (4) Γ Η Η 复 复 复 复 减压 减压 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' The hole and the adjacent another decompression disc group 2 can form a plurality of enthalpy between the two adjacent decompression disc groups; = > the scaffold passage to reduce the force flowing through the plurality of decompression disc groups . The above and other objects, features and advantages of the present invention will become more apparent. | α八#, first reference 1Μ 'The profile of the 咼f pressure valve 1〇〇 applied to high-pressure, high-temperature fluid transport system' is mainly used to regulate the flow of fluid, (4) the flow rate of the fluid and reduce the fluid pressure. The fluid flows in the direction of the arrow of the arrow IN, flows through the pressure reducing device 1〇, and changes the fluid path through the pressure reducing device 10 to lower the fluid iron # and then flows out from the arrow of the arrow OTT. Ϊ259250 A, with reference to Fig. 2, regarding the dry-sounding device of the subtracting device of the present invention: the decompressing device 10 includes a plurality of decompressing discs 2::: 2% is a disc υ. Each of the discs 1 includes a through hole=middle or intermediate plane 12 and a first bearing; a first through hole 11 and a first joint, and a plurality of discs 1 are stacked on each other to form a group Inventive pressure reducing device Η). - The monument Kt: 3A and Fig. 4A' respectively show a plan view of the disc 1 in the damper device 101 and a partial enlarged view thereof. Disc! Set: 2:: 2 has a plurality of circumferential groove groups 12〇, and each: - thousand faces, with an equal number of circumferential grooves 12, the garment toward the concave group 120 is for the penetrating orifice U璟 八 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ A partial enlarged view thereof. Bracts! The first groove group 130 having a plurality of radial #6 sheets 1 on the first surface 13 has a phase, a, and each radial concave groove mi/m grooves 131, 132 and (3). The radial ends are closed; the two ends are open, and the radial grooves 丨3 3 are pointed at =: one end of the side Λ 14 is an opening. "The outer edge of the core 1 is 15 HJ, and the reference to Figure 5, by stacking a plurality of discs 1%" (not shown in Fig. 2), it is possible to make a stack of "one after the heap" (such as the neighboring A disc, it, / /, a plurality of annular grooves 121 and a plurality of radial grooves 1 of the phase of Zhu Yue 1 are wrong. As shown in Fig. 7A or Fig. 7B, Π2, 133 intersect each other with m, U2 133 centimeters does not extend toward the groove 121 and the adjacent radial recesses form at least one multi-flap, then the fluid passage F1 or the core fluid can be separated between the two adjacent discs. The penetrating orifice 1259250 1 1 flows outward' by the multi-folding and rectifying and bending the linear channel of the soil passage F1 or F2, so that the fluid can be stably decompressed. 3C and FIG. 6, a side view of the 危 危 甘 甘 甘 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , At least one - y has at least one positioning recessed hole shape in the middle of the Λ Λ 17 17 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且6 shows the positioning recess 16 is located According to another aspect of the present invention, the actual /::1 is located on the second plane 13 , and the surface 13 is in the same manner, and the clamping recess 16 is also located in the second flat +, and the convex is convex. The block 17 can also be located on the first plane 12. Furthermore, the number of Ϊ = 16 and the positioning bumps 17 can be varied according to different control requirements. <City<; and when combining a plurality of discs To form the decompression device disc... the first plane 12 and the adjacent disc: in the middle, by positioning the recess 16 盥 仞 仞 楠 η η 禾 禾 一 一 ^ ^ ^ ^ ^ ^ ^ 疋 疋 疋 疋17 corresponding combinations at different angles,
以形成各種不同的多折f之流體通路F 圖了所示丄。因此將由數個碟片i所堆疊組成的減圓心 1°差100入口及出口交會處，可降低流經該 间差反閥H)0之流體之屡力，而且還可藉由不同角度组人 碟片以流體流經減麗裝置1G時，可有不 ^ 體壓力控制。 里汉/及机 如圖8所示，在本發明之另一實施例中，目 減壓裝置10亦可由數個減壓碟片組2堆疊而成。減壓 組2係由一第一碟片21、一第二碟片22及一第三片、 堆疊而成。第一碟片21、第二碟片22及第三碟片一23八 具有一第一穿透孔口 21卜一第二穿透孔口 221及一第三穿 1259250 透孔口 231，且這些穿透孔口 211、221、23i 可供流體通過。 ’、彼此相對應， 如圖8及圖9A所示，第一碟片21 — 孔洞組21〇,並且每一環向孔洞組210具有;目等冗j向 孔洞210卜此複數個環向孔洞21〇1係相對於=向 川呈環向分佈，同時其較佳者為各自具有不同=透=口 每一環向孔洞2101之兩端呈封閉式。 乂狀，並且 如圖8及圖9B所示，第二碟η 99 曰丄、 孔洞組220,並且每一徑向孔袓、 ，、有複數個徑向 2201 ^ 2202 ^ 及以㈧。此複數個徑向孔洞2 )2203係相對於第二穿透孔口 22!呈徑向二同時： =為各自具有不同形狀，其中徑向孔 端： 2::孔:】2〇2指向第二碟片22之内環邊:= 鳊為開口，並且徑向孔洞22 又 邊緣223之-端為開口。 ㈣苐-碟片22之外環 便，=二2广所示’因為穿透式孔洞之製造較為方 便因此在柄明之一實施例中，環向孔洞2iqi以及㈣ 孔洞讓、2202及2203皆為穿透式之孔洞。 工 使第如L8 藉由堆疊複數個減廢碟片組2之後，可 2〇1 =2 Γ:辰向孔润2101與第二碟片22的徑向孔洞 2201、2202 及 2203 彼此夺辑,^ ττ/ νThe fluid path F, which forms a variety of different folds, shows the enthalpy shown. Therefore, the rounding center composed of a plurality of discs i is 1° out of 100, and the entrance and exit intersections can reduce the force of the fluid flowing through the differential valve H)0, and can also be used by different angle groups. When the disc flows through the defrosting device 1G, there may be a pressure control. As shown in Fig. 8, in another embodiment of the present invention, the mesh unit 10 can also be stacked from a plurality of pressure reducing disc groups 2. The decompression group 2 is formed by stacking a first disc 21, a second disc 22 and a third sheet. The first disc 21, the second disc 22, and the third disc 238 have a first through hole 21, a second through hole 221, and a third through 1259250 through hole 231, and these The penetrating orifices 211, 221, 23i are available for fluid to pass through. Corresponding to each other, as shown in FIG. 8 and FIG. 9A, the first disc 21 - the hole group 21 〇, and each of the annular hole groups 210 has; the same redundant j-direction hole 210, the plurality of circumferential holes 21 The 〇1 series is distributed circumferentially with respect to = Xiangchuan, and at the same time, it is preferred that each has a different = transparent port. Each end of the annular hole 2101 is closed. As shown in FIG. 8 and FIG. 9B, the second dish η 99 曰丄, the hole group 220, and each radial hole 袓, , has a plurality of radial directions 2201 ^ 2202 ^ and (8). The plurality of radial holes 2) 2203 are radially opposite to the second through holes 22!: = each has a different shape, wherein the radial end: 2:: hole:] 2〇2 points The inner ring side of the two discs 22: = 鳊 is an opening, and the end of the radial hole 22 and the edge 223 is an opening. (4) 苐-disc 22 outside the ring, = 2 2 wide as 'because the penetrating hole is more convenient to manufacture. Therefore, in one embodiment of the shank, the ring hole 2iqi and (4) the hole hole, 2202 and 2203 are Penetrating holes. After the stacking of the plurality of waste-reducing disc groups 2, the workpieces can be retrieved by the radial holes 2201, 2202, and 2203 of the second disc 22, 2:1 = 2 Γ: ^ ττ/ ν
7A,« 7B 211，、231向外流，萨由多L打。流體從穿透孔口 中的直線流道整流及f折言之流體通路F1或F2 ^ 汉弓听ML道減壓，使得流體可穩定地減 1259250 因此將由數個減壓碟片組2所堆疊組成的減壓裝置ι〇 設置於高差壓㈤100入口及出口交會處時，即可:妒 該高差壓Μ 100之流體之壓力’而且還可藉由不同角；： 合減壓碟片組2,使流體流經減壓裝置時，可 :旦 及/或流體壓力控制。 」的肌里 同樣地，亦可將至少一定位缺口（圖8)設置在第一 2」、第二碟片22或第三碟片23上’以提供不同角度I且 石，以形成各種不同的多折彎之流體通路。 、 以佳實施例揭露如上，然其並非用以 限=本發明’彳壬何_此技藝者，在不麟本發明 t乾圍内，當可作些許之更動與潤飾，因此本發明之保 耗圍當視後附之申請專利範圍所界定者為準。 …隻 【圖式簡單說明】 圖1係具有減壓裝I蔽、^ ^ n, 衣罝之呵差壓閥之剖面立體示意圖。 ®係本發明之一實施例，其 圖3A係依據圖2 ”之—減二:，減㈣片之示意圖< 碟片之第一平面。 / 1碟片之俯視圖’其描繪減愿 其描I會減壓 圖3 B係依據圖2其中之一、、成廠泄U / 碟片之第二平面 減塵碟片之仰視圖 圖3C係依據圖2其中之— θ t r <減壓碟片之側視圖。 圖4A與圖4B係分別顯示圖3 之局部放大圖。 ㈡120與圖3B標號13〇 圖5係依_ 2之堆4兩相鄰之減㈣k透簡，以顯 1259250 示本發明之環向 — 圖6係依據圖2之:；=凹槽彼此交錯。 圖州7“二:=部放大圖。 多折彎之流體通路 發明之實施例所”之複數個 =8係本發明之另—實施例，其描堆疊減壓碟片組之示意 圖9吻別顯示圖8之標請與標號220之局 邊緣 【主要元件符號說明】 10 0、高差壓閥 1、 碟片 12、第一平面 121、環向凹槽 130、徑向凹槽組 132、内環開放式凹槽 14、212、222、内環 16、定位凹孔 F1、F2、複數多折彎之流體 2、 減壓碟片組 210、 環向孔洞組 211、 第一穿透孔口 213、第一碟片之外環邊緣 220、徑向孔洞組 10、 減壓裝置 11、 穿透孔口 12 0、環向凹槽組 13、第二平面 131、封閉式徑向凹槽 I33、外環開放式凹槽 15、213、223、外環9邊緣 17、定位凸塊 通路 21、 第一碟片 21〇1、環向孔洞 212、第一碟片夕咖四 ;、之内％邊續 22、 第二碟片 220卜封閉式徑向孔洞 12 1259250 2202、内環開放式徑向孔洞2203、外環開放式徑向孔洞 222、第二碟片之内環邊緣 223、第二碟片之外環邊緣 221、第二穿透孔口 23、第三碟片 231、第三穿透孔口7A, « 7B 211, 231 flow outwards, and Sa is played by L. The fluid is rectified from the straight flow passage in the penetrating orifice and the fluid passage F1 or F2 is reduced. The pressure of the ML channel is reduced, so that the fluid can be stably reduced by 12,592,50 and thus will be composed of a plurality of vacuum disc groups 2 stacked. The decompression device ι〇 is placed at the intersection of the high differential pressure (5) 100 inlet and outlet, ie: the pressure of the fluid with the high differential pressure '100 and can also be by different angles; When the fluid flows through the pressure reducing device, it can be controlled by: and/or fluid pressure. Similarly, at least one positioning notch (Fig. 8) may be disposed on the first 2", the second disc 22 or the third disc 23 to provide different angles I and stones to form various differences. Multi-bend fluid path. The preferred embodiment discloses the above, but it is not limited to the present invention. 彳壬 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The scope of the application is defined by the scope of the patent application. ...only [Simple description of the drawing] Fig. 1 is a schematic cross-sectional view of a differential pressure valve having a pressure-reducing I-shield, ^^n, and a placket. ® is an embodiment of the present invention, and FIG. 3A is based on FIG. 2 - minus two: minus (four) slices < first plane of the disc. / 1 top view of the disc 'depicting its depiction I will decompress Figure 3 B is based on one of Figure 2, the bottom view of the second plane dust reduction disc of the factory outlet U / disc Figure 3C according to Figure 2 - θ tr < decompression disc 4A and 4B are respectively a partial enlarged view of Fig. 3. (2) 120 and Fig. 3B, reference numeral 13, Fig. 5, according to the stack of _ 2, the adjacent (four) k simplification, showing 1259250 The hoop of the invention - Figure 6 is based on Figure 2: ; = grooves are staggered with each other. Figure 7 "two: = part of the enlarged view. Multi-bend fluid path embodiment of the invention "a plurality of = 8 series of other embodiments of the present invention, the schematic diagram of the stacked decompression disc group 9 shows the label of Figure 8 and the edge of the label 220 [Description of main component symbols] 10 0, high differential pressure valve 1, disc 12, first plane 121, circumferential groove 130, radial groove group 132, inner ring open groove 14, 212, 222, inner The ring 16, the positioning concave hole F1, F2, the plurality of bending fluid 2, the decompression disc group 210, the annular hole group 211, the first penetration hole 213, the first disc outer ring edge 220, the diameter The hole group 10, the pressure reducing device 11, the penetration hole 120, the circumferential groove group 13, the second plane 131, the closed radial groove I33, the outer ring open groove 15, 213, 223, and the outer The ring 9 edge 17, the positioning bump passage 21, the first disc 21〇1, the annular hole 212, the first disc 夕日四; the inner side 22, the second disc 220, the closed radial Hole 12 1259250 2202, inner ring open radial hole 2203, outer ring open radial hole 222, inner ring edge 223 of second disc, second dish Beyond the edge of the ring 221, a second penetration opening 23, the third disc 231, the third through apertures
1313