KR100294111B1 - Plug valve - Google Patents

Plug valve Download PDF

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Publication number
KR100294111B1
KR100294111B1 KR1019970081171A KR19970081171A KR100294111B1 KR 100294111 B1 KR100294111 B1 KR 100294111B1 KR 1019970081171 A KR1019970081171 A KR 1019970081171A KR 19970081171 A KR19970081171 A KR 19970081171A KR 100294111 B1 KR100294111 B1 KR 100294111B1
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KR
South Korea
Prior art keywords
disk
valve
seat
valve body
shaft
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KR1019970081171A
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Korean (ko)
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KR19990060924A (en
Inventor
심재봉
Original Assignee
홍경선
주식회사 일신고압단조밸브
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Priority to KR1019970081171A priority Critical patent/KR100294111B1/en
Publication of KR19990060924A publication Critical patent/KR19990060924A/en
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Publication of KR100294111B1 publication Critical patent/KR100294111B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
    • F16K5/0257—Packings
    • F16K5/0278—Packings on the plug
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F16K31/602—Pivoting levers, e.g. single-sided
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
    • F16K5/0207—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor with special plug arrangement, e.g. special shape or built in means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)

Abstract

PURPOSE: A plug valve is provided to prevent wear of a disk by forming clearance between the disk and a seat placing the disk, and by moving the disk in opening or closing a valve with forming the inclined surface in the seat. CONSTITUTION: A plug valve is composed of a valve body(6) having an inlet(2) and an outlet(4); a disk(8) installed in the valve body to open and close the passage between the inlet and the outlet; a seat(10) placing the disk; a shaft(24) including a thread part combined with the disk; a seal nut(30) connected to the threaded part of the shaft; a cover(38) formed in the upper part of the valve body to cover the valve body; and a handle lever(48) combined with the upper part of the shaft to open and close the valve. The outer surface of the disk is inclined, and the inclined surface is formed in the seat. Wear of the disk is prevented with moving up and down the disk by the shaft combined with the seal nut in opening and closing the valve. Wear in the disk and the seat is prevented with forming clearance between the disk and the seat.

Description

플러그 밸브Plug valve

본 발명은 플러그 밸브에 관한 것으로서, 더욱 상세하게는 밸브 개폐시 디스크와 이 디스크가 안착되는 시트 사이에 공간을 형성하여 디스크의 마모를 방지할 수 있는 플러그 밸브에 관한 것이다.The present invention relates to a plug valve, and more particularly, to a plug valve that can prevent abrasion of the disk by forming a space between the disk and the seat on which the disk is seated when the valve is opened and closed.

일반적으로 밸브는, 유입구와 유출구가 형성된 밸브몸체와, 이 밸브몸체의 내부에 설치되어 상기한 유입구와 유출구를 개폐하는 디스크와, 이 디스크가 안착되는 시트와, 상기한 디스크에 연결되어 밸브를 개폐할 수 있는 핸들을 갖는 구조로 이루어진다.In general, a valve includes a valve body having an inlet and an outlet formed therein, a disk installed inside the valve body to open and close the inlet and the outlet, a seat on which the disk is seated, and a valve connected to the disk to open and close the valve. It has a structure with a handle that can.

이러한 구조의 밸브는, 밸브몸체 내부에 형성된 디스크가 회전하여 유체를 흐르게 하거나 차단할 수 있게 된다.The valve of this structure allows the disk formed inside the valve body to rotate to allow the fluid to flow or block.

그러나, 이러한 구조의 밸브는 디스크가 밸브몸체 내부에 형성된 시트와 면접촉을 하면서 개폐되는 구조이기 때문에, 디스크와 시트가 쉽게 마모되는 현상이 발생하였다.However, the valve having such a structure has a structure in which the disk is opened and closed while making a surface contact with the seat formed inside the valve body.

특히, 고온이나 고압에서 밸브를 사용할 때는 디스크와 시트가 마모되는 현상이 빠르게 진행되어 유지하는데 어려움이 있었다.In particular, when the valve is used at high temperature or high pressure, it is difficult to keep the disk and seat worn out quickly.

본 발명은 상기한 바와 같은 종래의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 밸브 개폐시 유입구와 유출구를 개폐하여 주는 디스크와, 이 디스크가 안착되는 시트 사이에 공간이 형성되도록 하여 밸브 개폐시 디스크의 마모를 방지할 수 있는 플러그 밸브를 제공하는데 있다.The present invention has been made to solve the conventional problems as described above, an object of the present invention is to provide a space between the disk opening and closing the inlet and outlet when opening and closing the valve, so that the space is formed between the seat seating the disk valve It is to provide a plug valve that can prevent the wear of the disk when opening and closing.

상기한 바와 같은 본 고안의 목적을 실현하기 위하여, 유입구와 유출구가 형성된 밸브몸체와, 밸브몸체의 내부에 설치되어 상기한 유입구와 유출구 사이를 개폐하는 디스크와, 이 디스크가 안착되는 시트와, 상기한 디스크에 일측단이 결합되고 나사부가 형성되는 축과, 상기한 축에 형성된 나사부와 연결되는 씰 너트와, 상기한 밸브몸체의 상단에 형성되어 이 밸브몸체를 덮어주는 커버와, 상기한 축의 상단부에 결합되어 밸브를 여닫을 수 있도록 형성된 핸드 레버를 제공한다.In order to realize the object of the present invention as described above, the valve body is formed in the inlet and outlet, the disk which is installed inside the valve body to open and close between the inlet and outlet, the seat on which the disk is seated, and A shaft having one end coupled to one disk and forming a thread, a seal nut connected to the screw formed on the shaft, a cover formed at the top of the valve body to cover the valve body, and an upper end of the shaft It is coupled to provide a hand lever configured to open and close the valve.

상기한 디스크는 외측면이 경사면으로 형성되고, 이 디스크가 안착되는 시트는 대응되는 경사면을 형성하여, 씰 너트와 결합된 축이 밸브 개폐시 디스크를 소정거리 만큼 상승 또는 하강시켜 디스크의 마모를 방지할 수 있도록 구성된 것을 특징으로 한다.The disk has an outer surface formed as an inclined surface, and the seat on which the disk is seated forms a corresponding inclined surface, and the shaft coupled with the seal nut raises or lowers the disk by a predetermined distance when the valve is opened or closed to prevent the wear of the disk. Characterized in that configured to be.

제1도는 본 발명에 의한 플러그 밸브가 닫힌 상태의 종단면도.1 is a longitudinal sectional view of a plug valve in a closed state according to the present invention;

제2도는 본 발명에 의한 플러그 밸브가 열린 상태의 종단면도.Figure 2 is a longitudinal cross-sectional view of the plug valve open state according to the present invention.

제3(a)도는 본 발명에 의한 디스크의 정면도.3 (a) is a front view of a disk according to the present invention.

제3(b)도는 본 발명에 의한 디스크의 단면도이다.3 (b) is a sectional view of a disk according to the present invention.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 더욱 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

제1도는 본 발명에 의한 플러그 밸브가 닫힌 상태의 종단면도이고, 제2도는 본 발명에 의한 플러그 밸브가 열린 상태의 종단면도로서, 유입구(2)와 유출구(4)가 형성된 밸브몸체(6)에는 유입구(2)와 유출구(4)를 개폐하는 디스크(8)가 회전 가능하게 설치된다.1 is a longitudinal cross-sectional view of a plug valve according to the present invention in a closed state, and FIG. 2 is a longitudinal cross-sectional view of a plug valve open according to the present invention, and includes a valve body 6 having an inlet 2 and an outlet 4 formed therein. The disk 8 for opening and closing the inlet 2 and the outlet 4 is rotatably installed.

상기한 유입구(2)와 유출구(4) 사이에는 디스크(8)가 안착되는 시트(10)가 밸브몸체(6)의 내부와 긴밀하게 결합되어 형성된다.Between the inlet 2 and the outlet 4, the seat 10 on which the disk 8 is seated is formed in close contact with the inside of the valve body 6.

상기한 시트(10)는 경사면(12)을 보유하며, 이 경사면(12)과 기밀을 유지하며 디스크(8)가 안착될 수 있도록 한다.The seat 10 has an inclined surface 12, which keeps the airtight with the inclined surface 12 and allows the disk 8 to be seated.

상기한 디스크(8)는 제3(a)도 및 제3(b)도에 도시한 바와 같이, 상기한 시트(10)에 형성된 경사면(12)과 대응되는 경사면(14)을 갖고 있고, 실질적으로 유체가 흐를 수 있도록 마련된 통로(16)가 형성되며, 위쪽으로 돌출 형성된 돌기(18)를 보유하고, 이 돌기(18)를 관통하여 형성된 홈(20)을 포함한다.The disk 8 has an inclined surface 14 corresponding to the inclined surface 12 formed in the sheet 10 as shown in FIGS. 3A and 3B, and is substantially A passage 16 is formed to allow fluid to flow therethrough, and includes a groove 20 formed through the protrusion 18 and having a protrusion 18 protruding upwardly.

상기한 홈(20)은 사다리꼴 형상으로 위쪽의 폭이 좁게 이루어지며, 이 홈(20)에 대응되는 돌기(22)를 갖는 축(24)과 결합된다.The groove 20 has a narrow upper shape in a trapezoidal shape, and is coupled to the shaft 24 having the protrusion 22 corresponding to the groove 20.

이러한 디스크(8)가 형성된 위쪽으로 공간부(26)가 마련되는데, 이 공간부(26)는 밸브 개폐시 상기한 디스크(8)가 승강 및 하강 작용이 이루어질 수 있도록 하기 위함이다.Space portion 26 is provided above the disk 8 is formed, this space portion 26 is to allow the above-mentioned disk 8 to be raised and lowered when the valve opening and closing.

상기한 축(24)은 일정구간의 나사부(28)가 형성되는데, 이 나사부(28)에 밸브몸체(6)에 고정 설치되며 내부로부터의 누설과 외부로부터의 침입을 방지하기 위한 실 너트(30)가 유동 가능하게 기밀을 유지하며 결합된다.The shaft 24 has a thread portion 28 formed in a predetermined section, which is fixed to the valve body 6 to the thread portion 28 and seal nut 30 for preventing leakage from the inside and intrusion from the outside. ) Is combined to keep it airtight.

또한 상기한 실 너트(30)의 외주연부로 유체의 누설 방지를 위하여 개스킷(32)이 설치되며, 상기한 실 너트(30)의 위치를 조정할 수 있는 조정핀(34)이 실 너트(30)에 고정 설치된다.In addition, the gasket 32 is installed to prevent the leakage of the fluid to the outer periphery of the seal nut 30, the adjustment pin 34 to adjust the position of the seal nut 30 is the seal nut 30 It is fixed to the installation.

상기한 실 너트(30) 및 개스킷(32)은 완벽하게 기밀을 유지하여 설치하는 것이 바람직하고, 연장부(36)를 보유하는 덮개(38)로 덮은 다음, 고정부재(40)로 고정시켜 설치된다.It is preferable that the seal nut 30 and the gasket 32 are completely airtight and installed. The seal nut 30 and the gasket 32 are covered with a cover 38 holding the extension 36, and then fixed with the fixing member 40. do.

이러한 덮개(38)에 형성된 연장부(36) 끝단 내측과, 축(24) 외측 사이로 기밀을 유지하여 주는 패킹(42)과, 이 패킹(42)의 위쪽에 설치되어 더욱 기밀을 유지할 수 있도록 하여주는 글랜드(44)가 설치된다.The packing 42 which maintains airtightness between the inside of the end of the extension part 36 formed in the cover 38 and the outer side of the shaft 24, and is installed above the packing 42 so as to maintain more airtightness. The main gland 44 is installed.

상기한 패킹(42)은 합성수지나 금속 또는 고무를 이용하여 제작할 수 있고 소정의 탄성을 보유하여 기밀을 유지할 수 있는 것이 바람직하다.The packing 42 may be manufactured using a synthetic resin, a metal, or rubber, and preferably maintains airtightness by retaining a predetermined elasticity.

상기한 글랜드(44)의 끝단과 덮개(38)와 일체로 형성된 연장부(36) 끝단 외주면은 고정부재(46)로 고정시키게 된다.The outer circumferential surface of the end portion of the extension part 36 formed integrally with the end of the gland 44 and the cover 38 is fixed by the fixing member 46.

상기한 고정부재(46)의 외측으로는 디스크(8)와 결합된 축(24)의 일측단이 돌출 형성되는데, 여기에 상기한 디스크(8)를 개폐할 수 있는 핸들레버(48)가 고정부재(50)로 고정하여 설치된다.One side end of the shaft 24 coupled to the disk 8 protrudes from the outside of the fixing member 46, and a handle lever 48 capable of opening and closing the disk 8 is fixed thereto. It is fixed and installed by the member 50.

본 발명에서는 단을 갖는 일자형의 핸들레버(48)가 사용되지만, 이에 한정되는 것은 아니며 둥근 형상의 핸들을 사용할 수도 있다.In the present invention, a straight handle lever 48 having a stage is used, but is not limited thereto, and a round handle may be used.

상기한 핸들레버(48)는 대략 직교하는 방향으로 돌출 형성된 돌기(52)가 핸들레버(48)와 일체형으로 형성되며, 이러한 돌기(42)로 인하여 핸들레버(48)가 일정한 각도 이상 회전할 수 없도록 하여준다.The handle lever 48 has a protrusion 52 protruding in a substantially orthogonal direction and is integrally formed with the handle lever 48. The protrusion 42 can rotate the handle lever 48 by a predetermined angle or more. Do not let it.

이러한 작용을 위하여 상기한 덮개(38)에는 고정부재(54)로 고정시킨 스토퍼(56)가 길이 방향으로 설치된다.To this end, the cover 38 is provided with a stopper 56 fixed by the fixing member 54 in the longitudinal direction.

따라서, 핸들레버(48)를 일정한 각도만큼 회전시키면 이 핸들레버(48)에 형성된 돌기(52)가 스토퍼(56)에 가로막히게 되어 더 이상 회전할 수 없게 된다.Accordingly, when the handle lever 48 is rotated by a predetermined angle, the protrusions 52 formed on the handle lever 48 are blocked by the stopper 56, so that the handle lever 48 can no longer rotate.

이러한 구조의 플러그 밸브는, 밸브가 닫힌 상태에서 핸들레버(48)를 회전시키면 실 너트(30)와 나사부(28)가 결합된 축(24)이 위쪽으로 소정거리 만큼 상승하게 된다.In such a plug valve, when the handle lever 48 is rotated while the valve is closed, the shaft 24 to which the seal nut 30 and the screw portion 28 are coupled is raised upward by a predetermined distance.

이때, 상기한 축(24)과 결합된 디스크(8)는, 이 디스크(8)에 형성된 경사면(14)과 시트(10)에 형성된 경사면(12) 사이에 공간을 형성하며 상기한 디스크(8)의 위쪽에 마련된 공간부(26)로 상승하면서 회전하여 밸브를 열게 된다.At this time, the disk 8 coupled to the shaft 24 forms a space between the inclined surface 14 formed on the disk 8 and the inclined surface 12 formed on the sheet 10 and the disk 8 described above. The valve is opened by rotating while ascending to the space 26 provided above.

따라서, 디스크(8)와 시트(10)가 직접 면접촉을 하지 않고서도 밸브를 열을 수 있게 된다.Therefore, the valve 8 can be opened without directly contacting the disk 8 and the seat 10.

밸브를 닫을 때는 열을 때와 반대방향으로 핸들레버(48)를 회전시키면 축(24)에 결합된 디스크(8)가 열릴 때와 반대 방향으로 회전하면서 시트(10)에 형성된 경사면(12)으로 하강하여 유입구(2)와 유출구(4)를 막게 되어 유체의 흐름을 중단시키게 된다.When closing the valve, when the handle lever 48 is rotated in the opposite direction to the opening, the disk 8 coupled to the shaft 24 is rotated in the opposite direction to the opening, and the inclined surface 12 formed in the seat 10 The lowering stops the flow of the fluid by blocking the inlet 2 and the outlet 4.

이상 설명한 바와 같이 본 발명에 의한 플러그 밸브는, 밸브개폐시 디스크와 이 디스크가 안착되는 시트 사이에 공간을 형성하여 주어, 디스크의 마모를 방지할 수 있으며, 특히 고온 고압에서 밸브개폐시 발생되는 디스크 및 시트의 마모를 방지할 수 있게 된다.As described above, the plug valve according to the present invention forms a space between the disk and the seat on which the disk is seated when opening and closing the valve, thereby preventing wear of the disk, and in particular, a disk generated when opening and closing the valve at a high temperature and high pressure. And wear of the sheet can be prevented.

Claims (1)

유입구와 유출구가 형성된 밸브몸체와, 밸브몸체의 내부에 설치되어 상기한 유입구와 유출구 사이를 개폐하고 외주면이 경사지는 구조로 이루어진 디스크와, 이 디스크가 안착되며 디스크의 외주면에 형성된 경사면과 대응되는 경사면을 갖고 있는 시트와, 상기 디스크의 일측단에 결합되고 실 너트가 나사 결합되는 축과, 상기 밸브몸체의 상단을 덮어주며 핸들레버의 개폐를 일정한 범위 내에서 이루어지도록 하는 스토퍼를 갖는 커버와, 상기한 축의 상단부에 결합되어 밸브를 여닫을 수 있도록 형성된 핸들레버를 포함하고, 상기 씰 너트와 회전 가능하도록 결합된 축이 밸브 개폐시 디스크를 소정거리 만큼 상승 또는 하강시켜 디스크의 마모를 방지할 수 있도록 구성된 플러그 밸브.A valve body having an inlet and an outlet formed therein, a disk installed inside the valve body to open and close the inlet and the outlet, and having an inclined outer peripheral surface, and an inclined surface corresponding to the inclined surface formed on the outer peripheral surface of the disk on which the disk is seated; A cover having a seat having a seat, an shaft coupled to one end of the disk, and a threaded nut screwed together, a stopper covering an upper end of the valve body and allowing the handle lever to be opened and closed within a predetermined range; A handle lever coupled to the upper end of one shaft to open and close the valve, and the shaft coupled to the seal nut rotatably configured to prevent the wear of the disk by raising or lowering the disk by a predetermined distance when the valve is opened or closed. Plug valve.
KR1019970081171A 1997-12-31 1997-12-31 Plug valve KR100294111B1 (en)

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KR1019970081171A KR100294111B1 (en) 1997-12-31 1997-12-31 Plug valve

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KR100294111B1 true KR100294111B1 (en) 2001-11-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102554382B1 (en) 2022-11-08 2023-07-12 주식회사 민선 Plug valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102554382B1 (en) 2022-11-08 2023-07-12 주식회사 민선 Plug valve

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