KR101225211B1 - Desuperheater spray nozzle - Google Patents

Desuperheater spray nozzle Download PDF

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Publication number
KR101225211B1
KR101225211B1 KR1020110079306A KR20110079306A KR101225211B1 KR 101225211 B1 KR101225211 B1 KR 101225211B1 KR 1020110079306 A KR1020110079306 A KR 1020110079306A KR 20110079306 A KR20110079306 A KR 20110079306A KR 101225211 B1 KR101225211 B1 KR 101225211B1
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South Korea
Prior art keywords
nozzle
nozzle plug
plug
cooling water
cage
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KR1020110079306A
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Korean (ko)
Inventor
최승기
이범상
양락진
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티엠디이엔지(주)
한국남부발전 주식회사
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Priority to KR1020110079306A priority Critical patent/KR101225211B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
    • F22G5/123—Water injection apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/18—Roses; Shower heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)

Abstract

PURPOSE: A flexible spraying nozzle for a desuper heater is provided to maintain an optimal spraying condition by the energy of an elastic member regulated for maintaining the temperature of an outlet of the desuper heater when operating a boiler. CONSTITUTION: A flexible spraying nozzle for a desuper heater comprises a nozzle body(110), a nozzle plug(120), and an open/closing operation unit(140). The nozzle body is comprised in an inside of an evaporation pipe and installed in a cage connected to a cooling water injecting pipe where cooling water is supplied and comprises a spraying port. The nozzle plug is comprised in the nozzle body to be slid to an axial direction between closing and opening positions of the spraying port, thereby opening and closing the spraying port. The opening/closing operation unit maintains a closed state of the nozzle plug and opens the nozzle plug when the pressure of the cooling water supplied from the cage is over set pressure.

Description

과열저감기용 가변형 분무노즐{DESUPERHEATER SPRAY NOZZLE}Variable Spray Nozzle for Superheat Reduction {DESUPERHEATER SPRAY NOZZLE}

본 발명은 과열저감기용 가변형 분무노즐에 관한 것으로서, 보다 상세하게는 최적의 분무상태를 유지시켜 설비효율 향상 및 관련 설비의 안정운전에 기여하는 과열저감기용 가변형 분무노즐에 관한 것이다.
The present invention relates to a variable spray nozzle for superheat reduction, and more particularly, to a variable spray nozzle for superheat reduction, contributing to the improvement of equipment efficiency and stable operation of related equipment by maintaining an optimal spray state.

일반적으로, 화력 및 열병합 발전용 보일러에는 T-G라고 불러지는 터빈 제너레이터에서 필요로 하는 고온의 과열 증기를 발생키 위하여 과열기를 설치한다.In general, thermal and cogeneration boilers are equipped with a superheater to generate the high temperature superheated steam required by a turbine generator called T-G.

상기와 같이 설치된 과열기에서는 터빈에서 필요로 하는 온도를 정확하게 콘트롤 하기 위해서는 과열 저감기로 불리는 온도 조절 장치를 설치하여 사용하여야 한다.In the superheater installed as described above, in order to accurately control the temperature required by the turbine, a thermostat called a superheat reducer should be installed and used.

과열 저감기의 원리는 고온 및 고속으로 유동하는 스팀에 저온의 수분인 물을 분무하여 줌으로써 이때 분사된 물의 증발 잠열만큼 스팀의 온도를 다운시키게 되며 이때 물의 분사량은 스팀 온도에 추종되어 제어되게 되는 것이다.The principle of the superheat reducer is to spray water, which is a low temperature of water, to the steam flowing at high temperature and high speed to lower the temperature of the steam by the latent heat of evaporation of the injected water. .

과열 저감기는 증기 배관상에 설치되는데 일반적으로 과열 증기인 경우 통상 유동 속도는 보통 50m/s를 초과하지 않게 설계하는 것이 통상적인 방법이다.The superheat reducer is installed on the steam line. In general, in the case of superheated steam, it is common practice to design the flow rate not to exceed 50 m / s.

그런데, 상기의 언급한 바와 같이 과열 저감기의 생명이 분무된 물이 빨리 확산 증발이 되어야 하며, 이를 준수하기 위해서는 증기의 유동 속도가 대단히 중요한 인자가 되는 것이 사실이다.However, as mentioned above, the water sprayed with the life of the superheat reducer should be diffused and evaporated quickly, and in order to comply with this, the flow rate of steam becomes a very important factor.

또한 종래의 구조는 증기관 내부에서 케이지에 가공된 수개의 노즐구멍을 통해 냉각수를 분사하는 구조로 플러그의 위치에 따라 분사량이 조절된다.In addition, the conventional structure is a structure in which the cooling water is injected through several nozzle holes processed in the cage inside the steam pipe, the injection amount is adjusted according to the position of the plug.

그러나, 고온의 케이지 내부에서 슬라이딩되는 피스톤링의 마모 및 케이지 균열로 인해 닫힘 상태에서도 냉각수가 누설되어 열응력에 의한 슬리브 균열 손상 등 주기적인 교체 정비가 불가피한 문제점이 있다.
따라서, 이를 개선할 필요성이 요청된다.
본 발명의 배경이 되는 기술은 대한민국 공개특허공보 제10-2011-0014193호(2011.02.10)에 개시되어 있다.However, due to abrasion of the piston ring sliding inside the high-temperature cage and cracks in the cage, the coolant is leaked even in the closed state, and periodic replacement and maintenance such as damage to the sleeve crack due to thermal stress is inevitable.
Therefore, there is a need for improvement.
The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2011-0014193 (2011.02.10).

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상기한 기술구성은 본 발명의 이해를 돕기 위한 배경기술로서, 본 발명이 속하는 기술분야에서 널리 알려진 종래기술을 의미하는 것은 아니다.
The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

본 발명은 상기와 같은 필요성에 의해 창출된 것으로서, 보일러 운전시 과열기의 출구온도를 일정하게 유지하기 위하여 조정된 탄성부재의 힘에 의해 최적의 분무상태를 유지시킬 수 있어 설비효율 향상 및 관련설비의 안정운전이 용이한 과열저감기용 가변형 분무노즐을 제공하는데 그 목적이 있다.
The present invention has been created by the necessity as described above, it is possible to maintain the optimum spray state by the force of the elastic member adjusted to maintain a constant outlet temperature of the superheater during boiler operation to improve the efficiency of the facility and related equipment It is an object of the present invention to provide a variable spray nozzle for superheat reduction that is easy to operate stably.

본 발명에 따른 과열저감기용 가변형 분무노즐은: 증기관 내에 구비되고 냉각수가 공급되는 냉각수 주입관과 연결되는 케이지에 설치되고, 분사구를 갖는 노즐본체와; 상기 분사구의 닫힘위치와 열림위치 사이에서 축방향으로 슬라이딩 가능하게 상기 노즐본체에 구비되어 상기 분사구를 개폐하는 노즐플러그; 및 상기 노즐플러그의 닫힘상태를 유지시키고, 상기 케이지로부터 공급되는 냉각수의 압력이 설정 압력이상일 경우에 상기 노즐플러그가 개방되도록 하는 개폐작동부를 포함하고;
상기 증기관의 측벽에는 마운팅부속물이 구비되고, 상기 케이지에는 플랜지부가 형성되어 상기 플랜지부가 상기 마운팅부속물에 착탈 가능하게 마운팅 결합되며;
상기 개폐작동부는 상기 노즐플러그의 둘레면에 구비되고 일측은 상기 노즐본체에 지지되며 타측은 상기 노즐플러그에 지지되어 탄성력에 의해 상기 노즐플러그의 닫힘 상태를 유지시키는 탄성부재, 및 상기 노즐플러그에 구비되어 상기 탄성부재의 탄성력을 조절하는 조절부재를 포함하고;
상기 노즐플러그의 전면에는 냉각수의 토출유량을 조절하도록 상기 노즐플러그를 회전시킬 수 있는 조절탭이 구비되고;
상기 분사구는 상기 노즐본체의 내부에 둘레면을 따라 복수개 형성되는 유입구, 및 상기 유입구를 통해 유입된 냉각수가 상기 노즐플러그의 개방에 따라 토출되는 토출구를 포함하고;
상기 분사구와 상기 노즐플러그는 경질 초경합금으로 코팅되고;
상기 분사구와 상기 노즐플러그의 둘레에는 곡면부가 각각 형성되고;
상기 조절부재는 상기 노즐플러그의 후단에 나사 결합되는 너트, 및 상기 노즐플러그에 고정되도록 둘레면에 나사결합되는 고정볼트가 구비되고;
상기 노즐본체의 둘레에는 나사산이 형성되고, 상기 노즐본체의 선단에는 상기 케이지의 설치공보다 넓은 상기 플랜지부가 형성되어, 상기 케이지의 설치공에 나사결합되고;
상기 탄성부재는 코일스프링으로 이루어지며, 선단은 상기 노즐본체에 지지되고, 후단은 상기 노즐플러그의 후단에 고정되는 상기 조절부재에 지지되고;
일정한 힘으로 조정되어 있는 상기 탄성부재에 의해 냉각수 압력이 유지되다가 조정압력을 초과하게 되면 상기 노즐플러그가 개방되면서 냉각수가 분사되고, 조정압력 이하에서는 냉각수가 차단되어 누설을 방지하며;
상기 탄성부재와 상기 조절부재의 조합에 의해 분무형상을 유지하는 것을 특징으로 한다.
A variable spray nozzle for superheat reduction according to the present invention includes: a nozzle body provided in a steam pipe and installed in a cage connected to a cooling water injection pipe to which cooling water is supplied, and having a spray hole; A nozzle plug provided in the nozzle body to be slidable in the axial direction between the closed position and the open position of the injection hole to open and close the injection hole; And an opening / closing operation part for maintaining the closed state of the nozzle plug and opening the nozzle plug when the pressure of the cooling water supplied from the cage is equal to or higher than a set pressure;
A side wall of the steam pipe is provided with a mounting accessory, and a flange is formed in the cage so that the flange is detachably mounted to the mounting accessory;
The opening and closing operation portion is provided on the circumferential surface of the nozzle plug, one side is supported by the nozzle body and the other side is supported by the nozzle plug is provided with an elastic member for maintaining the closed state of the nozzle plug by elastic force, and the nozzle plug A control member for adjusting an elastic force of the elastic member;
A front side of the nozzle plug is provided with an adjustment tab for rotating the nozzle plug to adjust the discharge flow rate of the cooling water;
The injection port includes a plurality of inlets formed in the inside of the nozzle body along a circumferential surface, and a discharge port through which the coolant flowing through the inlet is discharged as the nozzle plug is opened;
The injection hole and the nozzle plug are coated with a hard cemented carbide;
Curved portions are formed around the injection hole and the nozzle plug, respectively;
The adjusting member is provided with a nut screwed to the rear end of the nozzle plug, and a fixing bolt screwed to the circumferential surface to be fixed to the nozzle plug;
A thread is formed around the nozzle body, and a flange portion wider than an installation hole of the cage is formed at a tip of the nozzle body, and screwed to an installation hole of the cage;
The elastic member is made of a coil spring, the front end is supported by the nozzle body, the rear end is supported by the adjusting member fixed to the rear end of the nozzle plug;
When the coolant pressure is maintained by the elastic member adjusted by a constant force and exceeds the adjustment pressure, the nozzle plug is opened and the coolant is injected, and below the adjustment pressure, the coolant is blocked to prevent leakage;
It is characterized by maintaining the spray shape by the combination of the elastic member and the adjustment member.

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본 발명에 따른 과열저감기용 가변형 분무노즐은 보일러 운전시 과열기의 출구온도를 일정하게 유지하기 위하여 조정된 탄성부재의 힘에 의해 최적의 분무상태를 유지시킬 수 있어 설비효율 향상 및 관련설비의 안정운전이 용이한 효과를 지닌다.Variable spray nozzle for superheat reduction according to the present invention can maintain the optimum spraying state by the force of the elastic member adjusted to maintain the exit temperature of the superheater during boiler operation, improving the efficiency of the equipment and stable operation of the related equipment This has an easy effect.

또한, 본 발명은 케이지에 나사결합에 조립되므로 조립성이 향상되고, 조절부재에 의해 탄성부재의 탄성을 조절할 수 있어 냉각수의 분무유량을 조절할 수 있으며, 노즐플러그의 최대 열림이 제한되므로 최적의 분무형상을 유지할 수 있는 효과를 지닌다.In addition, the present invention is assembled to the screw coupling to the cage because the assembly is improved, the elasticity of the elastic member can be adjusted by the adjustment member can adjust the spray flow rate of the coolant, the maximum opening of the nozzle plug is limited, the optimum spraying Has the effect of maintaining the shape.

또한, 본 발명은 노즐 토출부위에 경질 초경합금으로 코팅처리를 하여 노즐의 수명을 연장할 수 있는 효과를 지닌다.
In addition, the present invention has the effect of extending the life of the nozzle by coating the hard carbide with the nozzle discharge portion.

도 1은 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 분해 사시도,
도 2는 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 결합사시도,
도 3은 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 단면도,
도 4는 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 분무구를 보인 도면,
도 5는 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 사용상태도이다.1 is an exploded perspective view of a variable spray nozzle for superheat reduction according to an embodiment of the present invention;
Figure 2 is a combined perspective view of the variable spray nozzle for superheat reduction according to an embodiment of the present invention,
3 is a cross-sectional view of a variable spray nozzle for superheat reduction according to an embodiment of the present invention;
Figure 4 is a view showing the spray hole of the variable spray nozzle for superheat reduction according to an embodiment of the present invention,
5 is a state diagram of use of the variable spray nozzle for superheat reduction according to an embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 과열저감기용 가변형 분무노즐의 일 실시예를 설명한다. 이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로, 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.
Hereinafter, with reference to the accompanying drawings will be described an embodiment of a variable spray nozzle for superheat reduction according to the present invention. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

도 1은 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 분해 사시도이고, 도 2는 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 결합사시도이며, 도 3은 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 단면도이고, 도 4는 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 분무구를 보인 도면이며, 도 5는 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 사용상태도이다.
1 is an exploded perspective view of a variable spray nozzle for superheat reduction according to an embodiment of the present invention, Figure 2 is a perspective view of a combination of the variable spray nozzle for superheat reduction according to an embodiment of the present invention, Figure 3 is a view of the present invention 4 is a cross-sectional view of a variable spray nozzle for superheat reduction according to an embodiment, FIG. 4 is a view illustrating a spray hole of a variable spray nozzle for superheat reduction according to an embodiment of the present invention, and FIG. 5 is an embodiment of the present invention. The use state of the variable spray nozzle for superheat reduction according to.

도 1 내지 도 5를 참조하면, 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐(100)은 노즐본체(110), 노즐플러그(120) 및 개폐작동부(140)를 포함한다.1 to 5, the variable spray nozzle 100 for overheat reduction according to an embodiment of the present invention includes a nozzle body 110, a nozzle plug 120, and an opening / closing operation unit 140.

도 5에서 도시된 바와 같이 노즐본체(110)는 증기관(10) 내에 구비되는 케이지(20)에 설치되고, 내부에 분사구(115)를 갖는다. 노즐본체(110)의 둘레에는 나사산이 형성되고, 선단에는 케이지(20)의 설치공보다 넓은 플랜지부(112)가 형성되어, 케이지(20)의 설치공에 나사결합된다.As shown in FIG. 5, the nozzle body 110 is installed in a cage 20 provided in the steam pipe 10 and has an injection hole 115 therein. A screw thread is formed around the nozzle body 110, and a flange portion 112 wider than an installation hole of the cage 20 is formed at the front end thereof, and is screwed to the installation hole of the cage 20.

증기관(10)은 상승 압력에서 과열된 스팀이 통과하는 것으로 증기관(10)의 어느 한 부분에는 마운팅부속물(12)이 측벽에 제공되고, 케이지(20)는 마운팅부속물(12)에 마운팅된다.The steam tube 10 is a superheated steam passing through the elevated pressure passes through the mounting part 12 is provided on the side wall, the cage 20 is mounted to the mounting part 12 in any part of the steam pipe 10.

케이지(20)는 냉각수 주입관(30)과 연결되고, 냉각수 주입관(30)은 냉각수 제어밸브(미도시)와 연결되며, 냉각수 제어밸브는 높은 압력 물공급부(미도시)에 유체적으로 연결된다.The cage 20 is connected to the coolant inlet 30, the coolant inlet 30 is connected to a coolant control valve (not shown), and the coolant control valve is fluidly connected to a high pressure water supply (not shown). do.

따라서, 케이지(20)로 공급되는 냉각수는 분무노즐(100)을 통해 분사되는 것이다.Therefore, the cooling water supplied to the cage 20 is sprayed through the spray nozzle 100.

노즐플러그(120)는 노즐본체(110)에 구비되어 분사구(115)를 개폐시킨다. 노즐플러그(120)는 노즐본체(110)에서 분사구(115)의 닫힘위치 및 열림위치 사이에서 축방향으로 슬라이드 가능하게 결합된다.The nozzle plug 120 is provided in the nozzle body 110 to open and close the injection hole 115. The nozzle plug 120 is slidably coupled in the axial direction between the closed position and the open position of the injection port 115 in the nozzle body 110.

분사구(115)는 노즐본체(110)의 내부에 둘레면을 따라 복수개 형성되는 유입구(117) 및 유입구(117)를 통해 유입된 냉각수가 노즐플러그(120)의 개방에 따라 토출되는 토출구(118)를 포함한다.The injection hole 115 has a plurality of inlets 117 formed along the circumferential surface of the nozzle body 110 and a discharge hole 118 through which the coolant introduced through the inlet 117 is discharged as the nozzle plug 120 is opened. It includes.

분사구(115)와 노즐플러그(120)의 둘레에는 곡면부(130)가 각각 형성된다. 이는 분사구(115)를 통해 토출되는 냉각수의 최적의 무화가 가능한 구조이다.Curved portions 130 are formed around the injection hole 115 and the nozzle plug 120, respectively. This is a structure capable of optimal atomization of the cooling water discharged through the injection port 115.

그리고, 분사구(115)와 노즐플러그(120)는 경질 초경합금으로 코팅되어 경도가 높고, 내마모성이 향상되어 분무노즐(100)의 수명을 연장할 수 있다.In addition, the injection hole 115 and the nozzle plug 120 may be coated with a hard cemented carbide to have high hardness and to improve wear resistance, thereby extending the life of the spray nozzle 100.

개폐작동부(140)는 노즐플러그(120)의 닫힘상태를 유지시키고, 케이지(20)로부터 공급되는 냉각수의 압력이 설정 압력이상일 경우에 노즐플러그(120)가 개방되도록 한다.The opening and closing operation unit 140 maintains the closed state of the nozzle plug 120 and allows the nozzle plug 120 to open when the pressure of the cooling water supplied from the cage 20 is greater than or equal to the set pressure.

개폐작동부(140)는 노즐플러그(120)의 둘레면에 구비되고, 일측은 노즐본체(110)에 지지되며, 타측은 노즐플러그(120)에 지지되어 탄성력에 의해 노즐플러그(120)의 닫힘상태를 유지시키는 탄성부재(142) 및 노즐플러그(120)에 구비되어 탄성부재(142)의 탄성력을 조절하는 조절부재(144)를 포함한다.Opening and closing operation unit 140 is provided on the circumferential surface of the nozzle plug 120, one side is supported by the nozzle body 110, the other side is supported by the nozzle plug 120 is closed of the nozzle plug 120 by the elastic force It includes an elastic member 142 to maintain the state and the nozzle plug 120 is provided with an adjustment member 144 for adjusting the elastic force of the elastic member 142.

탄성부재(142)는 코일스프링으로 이루어지며, 선단은 노즐본체(110)에 지지되고, 후단은 노즐플러그(120)의 후단에 고정되는 조절부재(144)에 지지된다.The elastic member 142 is made of a coil spring, the front end is supported by the nozzle body 110, the rear end is supported by the adjustment member 144 is fixed to the rear end of the nozzle plug 120.

따라서, 공급되는 냉각수의 압력이 탄성부재(142)의 탄성력보다 높으면 노즐플러그(120)를 밀어내어 냉각수가 분사되고, 탄성력보다 낮으면 노즐플러그(120)에 의해 닫힘상태를 유지하는 것이다.Therefore, when the pressure of the cooling water supplied is higher than the elastic force of the elastic member 142, the nozzle plug 120 is pushed out to eject the cooling water, and when the pressure of the cooling water is lower than the elastic force, the cooling water is kept closed by the nozzle plug 120.

조절부재(144)는 노즐플러그(120)의 후단에 나사 결합되는 너트로 이루어진다. 그리고, 조절부재(144)는 노즐플러그(120)에 고정되도록 둘레면에 나사 결합되는 고정볼트(145)가 더 구비된다.The adjusting member 144 is made of a nut screwed to the rear end of the nozzle plug 120. And, the adjusting member 144 is further provided with a fixing bolt 145 screwed to the circumferential surface to be fixed to the nozzle plug 120.

즉, 노즐플러그(120)에 나사결합되는 조절부재(144)에 의해 조절부재(144)의 결합위치에 따라 탄성부재(142)의 탄성력을 조절할 수 있어 토출유량을 조절할 수 있는 것이다.That is, the elastic force of the elastic member 142 can be adjusted according to the coupling position of the adjusting member 144 by the adjusting member 144 screwed to the nozzle plug 120 to adjust the discharge flow rate.

이때, 조절부재(144)는 고정볼트(145)에 의해 견고히 고정되므로, 노즐플러그(120)를 회전시켜 토출유량을 조절하기 위해 노즐플러그(120)의 전면에는 조절탭(150)이 구비된다.
At this time, since the adjustment member 144 is firmly fixed by the fixing bolt 145, the adjustment tab 150 is provided on the front surface of the nozzle plug 120 to adjust the discharge flow rate by rotating the nozzle plug 120.

이하, 본 발명의 일 실시예에 따른 과열저감기용 가변형 분무노즐의 작용 및 효과를 설명하면 다음과 같다.Hereinafter, the operation and effects of the variable spray nozzle for superheat reduction according to an embodiment of the present invention will be described.

과열저감기용 가변형 분무노즐(100)의 작동은 제어밸브(미도시)에서 냉각수 주입관(30)을 통해 공급된 냉각수의 압력수준에 의해 제어된다.The operation of the variable spray nozzle 100 for superheat reduction is controlled by the pressure level of the coolant supplied through the coolant injection pipe 30 in a control valve (not shown).

증기관(10)의 내부에는 센서(미도시)가 구비되어 센서로부터 증기관(10) 내부의 온도를 감지하고 증기가 포화된다고 가정하면, 냉각수를 추가할 필요가 없어 냉각수 주입관(30)으로 냉각수가 공급되는 것을 제어밸브가 차단된 상태를 유지한다.A sensor (not shown) is provided inside the steam pipe 10 to sense the temperature inside the steam pipe 10 from the sensor, and assuming that the steam is saturated, there is no need to add cooling water, and thus the coolant may be added to the cooling water injection pipe 30. Keep the control valve shut off from being supplied.

이때, 탄성부재(142)의 탄성력에 의해 노즐플러그(120)는 분사구(115)의 닫힘상태를 유지하므로 누설로 인한 배관슬리브 균열 손상을 최소화할 수 있다.At this time, since the nozzle plug 120 maintains the closed state of the injection hole 115 by the elastic force of the elastic member 142, the pipe sleeve crack damage due to leakage can be minimized.

그리고, 증기관(10) 증기의 과열 때문에 냉각수가 필요하게 되면, 냉각수 주입관(30)을 통해 케이지(20)로 냉각수가 공급되고, 냉각수의 압력이 설정압력 이상이면, 냉각수가 노즐플러그(120)를 밀면서 적정유량이 분사된다.When the cooling water is required due to overheating of the steam pipe 10, the cooling water is supplied to the cage 20 through the cooling water injection pipe 30, and when the pressure of the cooling water is equal to or higher than the set pressure, the cooling water is inserted into the nozzle plug 120. Proper flow rate is injected while pushing.

이를 자세히 설명하면, 일정한 힘으로 조정되어 있는 탄성부재(142)에 의해 냉각수 압력이 유지되다가 조정압력을 초과하게 되면, 노즐플러그(120)가 개방되면서 냉각수가 분사되고, 조정압력 이하에서는 냉각수가 차단되어, 누설을 방지한다.In detail, when the coolant pressure is maintained by the elastic member 142 that is adjusted with a constant force, and the adjustment pressure is exceeded, the coolant is injected while the nozzle plug 120 is opened and the coolant is blocked below the adjustment pressure. To prevent leakage.

그리고, 탄성부재(142)와 조절부재(144)의 조합에 의해 최대 열림이 제한되어 최적의 분무형상을 유지할 수 있다.In addition, the maximum opening is limited by the combination of the elastic member 142 and the adjusting member 144 to maintain the optimum spray shape.

또한, 냉각수 분무시 분사구(115)를 통해 토출되는 냉각수는 분사구(115)와 노즐플러그(120)의 둘레면에 형성되는 각각의 곡면부(130)에 의해 최적의 무화를 이룰수 있다.In addition, the cooling water discharged through the injection hole 115 when spraying the cooling water may achieve an optimum atomization by the respective curved portions 130 formed on the circumferential surface of the injection hole 115 and the nozzle plug 120.

노즐플러그(120)와 분사구 즉, 냉각수의 토출부위는 경질 초경합금으로 코팅처리되어 분무노즐(100)의 수명을 연장할 수 있다.The nozzle plug 120 and the injection hole, that is, the discharge portion of the cooling water may be coated with a hard cemented carbide to extend the life of the spray nozzle 100.

한편, 노즐플러그(120)의 전면에는 조절탭(150)이 구비되어 분무노즐(100)의 건전성확인 및 유량조절이 가능하다.On the other hand, the front surface of the nozzle plug 120 is provided with a control tab 150, it is possible to check the soundness and control the flow rate of the spray nozzle 100.

분무노즐(100)의 유량조절은 노즐플러그(120)의 후단에 결합되는 조절부재(144)를 파지하고, 조절탭(150)에 공구를 삽입하여 회전시킴으로, 탄성부재(142)의 탄성력이 가변되어 토출 유량을 조절할 수 있는 것이다.The flow rate control of the spray nozzle 100 grips the adjusting member 144 coupled to the rear end of the nozzle plug 120, and rotates by inserting a tool into the adjusting tab 150 so that the elastic force of the elastic member 142 is variable. To control the discharge flow rate.

상기와 같이 탄성부재(142)의 설정압력을 조절한 후 케이지(20)에 결합하여 사용한다.After adjusting the set pressure of the elastic member 142 as described above it is used in combination with the cage (20).

상기와 같은 구성에 따른 과열저감기용 가변형 분무노즐에 의하면, 보일러 운전시 과열기의 출구온도를 일정하게 유지하기 위하여 조정된 탄성부재의 힘에 의해 최적의 분무상태를 유지시킬 수 있으며, 누수를 방지하고, 수명을 연장하여 설비효율 향상 및 관련설비의 안정운전이 용이한 효과를 지닌다.
According to the variable spray nozzle for superheat reduction according to the configuration as described above, it is possible to maintain the optimum spraying state by the force of the elastic member adjusted to maintain the outlet temperature of the superheater during boiler operation, to prevent leakage In addition, it has the effect of improving the facility efficiency and stable operation of related equipment by extending the service life.

본 발명은 도면에 도시된 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

따라서, 본 발명의 진정한 기술적 보호범위는 특허청구범위에 의해서 정하여져야 할 것이다.
Accordingly, the true scope of protection of the present invention should be defined by the claims.

100 : 과열저감기용 가변형 분무노즐 110 : 노즐본체
112 : 플랜지부 115 : 분사구
117 : 유입구 118 : 토출구
120 : 노즐플러그 130 : 곡면부
140 : 개폐작동부 142 : 탄성부재
144 : 조절부재 145 : 고정볼트
150 : 조절탭100: variable spray nozzle for superheat reduction 110: nozzle body
112: flange 115: injection port
117: inlet 118: outlet
120: nozzle plug 130: curved portion
140: opening and closing operation unit 142: elastic member
144: adjusting member 145: fixing bolt
150: adjustment tab

Claims (8)

증기관 내에 구비되고 냉각수가 공급되는 냉각수 주입관과 연결되는 케이지에 설치되고, 분사구를 갖는 노즐본체;
상기 분사구의 닫힘위치와 열림위치 사이에서 축방향으로 슬라이딩 가능하게 상기 노즐본체에 구비되어 상기 분사구를 개폐하는 노즐플러그; 및
상기 노즐플러그의 닫힘상태를 유지시키고, 상기 케이지로부터 공급되는 냉각수의 압력이 설정 압력이상일 경우에 상기 노즐플러그가 개방되도록 하는 개폐작동부를 포함하고;
상기 증기관의 측벽에는 마운팅부속물이 구비되고, 상기 케이지에는 플랜지부가 형성되어 상기 플랜지부가 상기 마운팅부속물에 착탈 가능하게 마운팅 결합되며;
상기 개폐작동부는 상기 노즐플러그의 둘레면에 구비되고 일측은 상기 노즐본체에 지지되며 타측은 상기 노즐플러그에 지지되어 탄성력에 의해 상기 노즐플러그의 닫힘 상태를 유지시키는 탄성부재, 및 상기 노즐플러그에 구비되어 상기 탄성부재의 탄성력을 조절하는 조절부재를 포함하고;
상기 노즐플러그의 전면에는 냉각수의 토출유량을 조절하도록 상기 노즐플러그를 회전시킬 수 있는 조절탭이 구비되고;
상기 분사구는 상기 노즐본체의 내부에 둘레면을 따라 복수개 형성되는 유입구, 및 상기 유입구를 통해 유입된 냉각수가 상기 노즐플러그의 개방에 따라 토출되는 토출구를 포함하고;
상기 분사구와 상기 노즐플러그는 경질 초경합금으로 코팅되고;
상기 분사구와 상기 노즐플러그의 둘레에는 곡면부가 각각 형성되고;
상기 조절부재는 상기 노즐플러그의 후단에 나사 결합되는 너트, 및 상기 노즐플러그에 고정되도록 둘레면에 나사결합되는 고정볼트가 구비되고;
상기 노즐본체의 둘레에는 나사산이 형성되고, 상기 노즐본체의 선단에는 상기 케이지의 설치공보다 넓은 상기 플랜지부가 형성되어, 상기 케이지의 설치공에 나사결합되고;
상기 탄성부재는 코일스프링으로 이루어지며, 선단은 상기 노즐본체에 지지되고, 후단은 상기 노즐플러그의 후단에 고정되는 상기 조절부재에 지지되고;
일정한 힘으로 조정되어 있는 상기 탄성부재에 의해 냉각수 압력이 유지되다가 조정압력을 초과하게 되면 상기 노즐플러그가 개방되면서 냉각수가 분사되고, 조정압력 이하에서는 냉각수가 차단되어 누설을 방지하며;
상기 탄성부재와 상기 조절부재의 조합에 의해 분무형상을 유지하는 것을 특징으로 하는 과열저감기용 가변형 분사노즐.A nozzle body provided in the steam pipe and installed in a cage connected to the cooling water injection pipe to which the cooling water is supplied, and having a spray hole;
A nozzle plug provided in the nozzle body to be slidable in the axial direction between the closed position and the open position of the injection hole to open and close the injection hole; And
An opening / closing operation part for maintaining the closed state of the nozzle plug and opening the nozzle plug when the pressure of the cooling water supplied from the cage is equal to or higher than a set pressure;
A side wall of the steam pipe is provided with a mounting accessory, and a flange is formed in the cage so that the flange is detachably mounted to the mounting accessory;
The opening and closing operation portion is provided on the circumferential surface of the nozzle plug, one side is supported by the nozzle body and the other side is supported by the nozzle plug is provided with an elastic member for maintaining the closed state of the nozzle plug by elastic force, and the nozzle plug A control member for adjusting an elastic force of the elastic member;
A front side of the nozzle plug is provided with an adjustment tab for rotating the nozzle plug to adjust the discharge flow rate of the cooling water;
The injection port includes a plurality of inlets formed in the inside of the nozzle body along a circumferential surface, and a discharge port through which the coolant flowing through the inlet is discharged as the nozzle plug is opened;
The injection hole and the nozzle plug are coated with a hard cemented carbide;
Curved portions are formed around the injection hole and the nozzle plug, respectively;
The adjusting member is provided with a nut screwed to the rear end of the nozzle plug, and a fixing bolt screwed to the circumferential surface to be fixed to the nozzle plug;
A thread is formed around the nozzle body, and a flange portion wider than an installation hole of the cage is formed at a tip of the nozzle body, and screwed to an installation hole of the cage;
The elastic member is made of a coil spring, the front end is supported by the nozzle body, the rear end is supported by the adjusting member fixed to the rear end of the nozzle plug;
When the coolant pressure is maintained by the elastic member adjusted by a constant force and exceeds the adjustment pressure, the nozzle plug is opened and the coolant is injected, and below the adjustment pressure, the coolant is blocked to prevent leakage;
The variable injection nozzle for superheat reduction, characterized in that the spray shape is maintained by a combination of the elastic member and the adjustment member. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101456247B1 (en) * 2013-12-04 2014-11-06 일월테크 주식회사 Spray nozzle of desuperheater
KR101581769B1 (en) 2014-12-17 2015-12-31 두산중공업 주식회사 Spray nozzle for over heat prevention
KR20200064502A (en) * 2018-11-29 2020-06-08 김광민 Spray type nozzle with uniform spraying function of superheated steam
KR102523825B1 (en) * 2022-10-07 2023-04-20 주식회사 극동 Concrete water tank for easy installation of freshwater panels and induction of water flow

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000005644A (en) * 1998-06-19 2000-01-11 Mitsubishi Heavy Ind Ltd Injection nozzle
JP2005066543A (en) * 2003-08-27 2005-03-17 Abb Kk Spray nozzle for steam attemperation
US7028994B2 (en) * 2004-03-05 2006-04-18 Imi Vision Pressure blast pre-filming spray nozzle
KR20110014193A (en) * 2008-05-09 2011-02-10 콘트롤 컴퍼넌츠 아이엔씨 Desuperheater spray nozzle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000005644A (en) * 1998-06-19 2000-01-11 Mitsubishi Heavy Ind Ltd Injection nozzle
JP2005066543A (en) * 2003-08-27 2005-03-17 Abb Kk Spray nozzle for steam attemperation
US7028994B2 (en) * 2004-03-05 2006-04-18 Imi Vision Pressure blast pre-filming spray nozzle
KR20110014193A (en) * 2008-05-09 2011-02-10 콘트롤 컴퍼넌츠 아이엔씨 Desuperheater spray nozzle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101456247B1 (en) * 2013-12-04 2014-11-06 일월테크 주식회사 Spray nozzle of desuperheater
KR101581769B1 (en) 2014-12-17 2015-12-31 두산중공업 주식회사 Spray nozzle for over heat prevention
KR20200064502A (en) * 2018-11-29 2020-06-08 김광민 Spray type nozzle with uniform spraying function of superheated steam
KR102162510B1 (en) * 2018-11-29 2020-10-06 김광민 Spray type nozzle with uniform spraying function of superheated steam
KR102523825B1 (en) * 2022-10-07 2023-04-20 주식회사 극동 Concrete water tank for easy installation of freshwater panels and induction of water flow

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