KR20190050400A - Dispersion Device of Spry Nozzle for Deaeration - Google Patents

Dispersion Device of Spry Nozzle for Deaeration Download PDF

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Publication number
KR20190050400A
KR20190050400A KR1020170145764A KR20170145764A KR20190050400A KR 20190050400 A KR20190050400 A KR 20190050400A KR 1020170145764 A KR1020170145764 A KR 1020170145764A KR 20170145764 A KR20170145764 A KR 20170145764A KR 20190050400 A KR20190050400 A KR 20190050400A
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South Korea
Prior art keywords
nozzle
deaerator
steam
spray nozzle
spray
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KR1020170145764A
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Korean (ko)
Inventor
우종인
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비에이치아이 주식회사
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Priority to KR1020170145764A priority Critical patent/KR20190050400A/en
Publication of KR20190050400A publication Critical patent/KR20190050400A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/50Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors
    • Y02E30/40

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Water Treatments (AREA)
  • Nozzles (AREA)

Abstract

The present invention relates to a spray nozzle for a deaerator, wherein a plurality of contact areas are extended with respect to main power steam to provide dissolved oxygen content required in a power generating unit by effectively and quickly removing air. More specifically the present invention provides a spray nozzle for a deaerator, which is installed in a nozzle hole perforated in a steam distribution pipe of a deaerator, wherein a het end of the nozzle is formed in a v-shaped to significantly increase a contact area with main power steam by fan-shaped wide angle spray of 80-120. Therefore, dissolved oxygen amounts can be effectively reduced to a level required for a power generating unit in a short time without increasing pressure and a flow rate.

Description

탈기기용 스프레이 노즐{Dispersion Device of Spry Nozzle for Deaeration}Dispersion Device of Spray Nozzle for Deaeration [0002]

본 발명은 발전설비에 사용되는 탈기기용 스프레이 노즐에 관한 것으로, 더욱 자세하게는 탈기기용 스프레이 노즐의 구조를 개선하여 주력 증기에 대한 복수의 접촉면을 늘려 용존 산소 함유량을 대폭 낮출 수 있게 한 것이다.
The present invention relates to a spray nozzle for a degasser used in a power generation facility, and more particularly, to improve the structure of a spray nozzle for a degasser, thereby increasing a plurality of contact surfaces with respect to the main steam, thereby drastically lowering the dissolved oxygen content.

일반적으로 알려진 원자력 발전 플랜트는 원자로에서 생산되는 증기로 터빈을 가동하여 발전하고, 발전에 사용된 폐증기는 복수기로 경유하는 동안 냉각수에 의해 응축되어 저압의 포화액인 복수를 발생시키며, 복수는 복수 펌프에 의해 저압 급수 가열기를 거쳐 탈기기에 공급되어 복수의 용존 산소와 같은 불순물을 제거한 후 급수 가열기에서 가열하여 증기 발생기로 환송된다. Generally, a known nuclear power plant is operated by a turbine driven by a steam produced in a reactor, and the pulmonary steam used for power generation is condensed by cooling water while passing through a condenser to generate a low pressure saturated liquid, The steam is supplied to the deaerator through the low-pressure feedwater heater by the pump, the impurities such as a plurality of dissolved oxygen are removed, and the steam is heated by the water heater to be returned to the steam generator.

탈기기에서, 스프레이 노즐을 통해 저수부의 증기로 분출되는 복수 중의 산소는 증기로 바뀌는 과정에서 탈기된다. In the deaerator, the oxygen in the liquid that is ejected through the spray nozzle through the vapor of the bottom portion is deaerated in the process of turning into steam.

원자력 발전량을 확보하려면 증기 발생기의 증기생산량과 복수기에 의한 복수량을 늘려야 하는 동시에 탈기기의 대형화도 필요하다. In order to secure nuclear power generation, it is necessary to increase the steam production amount of the steam generator and the replenishment quantity by the condenser, and at the same time, it is necessary to enlarge the deaerator.

선행기술의 등록특허 제10-1021916호와 공개특허 제10-2017-0107512호 등에 개시된 종래의 탈기기용 스프레이 노즐은 오리피스공으로서, 주력 증기와의 접촉면적이 작아 대유량 영역에서의 압력 손실이 크기 때문에 발전설비에서 요구하는 용존 산소 함유량 수준으로 탈기하는 데 한계가 있다.
The conventional spray nozzles for the degasser disclosed in JP-A-10-1021916 and JP-A-10-2017-0107512 in the prior art are orifice balls and have a small contact area with the main steam, so that the pressure loss in the large- Therefore, there is a limit to deaeration to the level of dissolved oxygen required by the power generation facilities.

등록특허 제10-1021916호Patent No. 10-1021916 공개특허 제10-2017-0107512호Published Japanese Patent Application No. 10-2017-0107512

본 발명의 목적은 주력 증기에 대한 복수의 접촉면적 확장으로 발전설비에서 요구하는 용존 산소 함유량이 되도록 효과적이며 신속하게 탈기할 수 있는 탈기기용 스프레이 노즐을 제공하려는 것이다.
It is an object of the present invention to provide a spray nozzle for a degasser capable of effectively and quickly degassing so as to have a dissolved oxygen content required by a power generation facility by expanding a plurality of contact areas with respect to the main steam.

상기 목적을 달성하기 위해서 본 발명은, 탈기기의 증기 분배관에 천공된 오리피스공에 설치하는 스프레이 노즐로서, 복수가 분사되는 노즐의 선단에 >형 확산홈을 형성하여 80~120의 부채꼴형 광각 분사되게 함으로써 주력 증기와의 접촉면적이 대폭 늘어나 복수의 증압과 유량을 늘리지 않고도 단시간에 효과적으로 용존 산소량을 발전설비에서 요구하는 수준으로 감축할 수 있게 한 탈기기용 스프레이 노즐을 특징으로 한 것이다.
In order to attain the above object, the present invention is a spray nozzle provided in an orifice hole drilled in a steam distribution pipe of a deaerator, wherein a plurality of spray nozzles are formed at the tips of the nozzles, The spray nozzle is characterized in that the contact area with the main steam is greatly increased and the dissolved oxygen amount can be effectively reduced to a required level in a power plant in a short time without increasing the pressure and flow rate.

본 발명에 의하면, 복수의 분사형태가 길고 가느다란 원추형으로 복수가 분사되어 주력 증기와의 접촉면적이 작았던 기존의 오리피스공과는 달리 본 발명의 광각 분사형 스프레이 노즐은 동일 복수압과 복수량이라도 광폭으로 분사하여 주력 증기와 광범위하게 접촉시킬 수 있으므로 보다 빨리 그리고 효율적으로 발전설비에서 요구하는 용존 산소 함유량으로 낮출 수 있다.
In accordance with the present invention, unlike conventional orifices, in which a plurality of spray shapes are formed in a long and thin conical shape and a contact area with the main steam is small, the wide angle spray nozzle of the present invention has wide width So that it can be brought into contact with the mainstream steam in a wide range, so that it can be quickly and efficiently lowered to the required dissolved oxygen content in the power generation facility.

도 1은 본 발명에 의한 탈기기용 스프레이 노즐의 투시도
도 2는 본 발명 탈기기용 분배관의 노즐공에 설치된 스프레이 노즐의 광각 분사예시도
도 3은 도 2의 평면도
도 4는 도 3의 확대 단면도
도 5는 도 2의 확대 단면도
1 is a perspective view of a spray nozzle for a degasser according to the present invention;
Fig. 2 is a view showing an example of a wide angle injection of a spray nozzle provided in a nozzle hole of a distribution pipe for a degasser according to the present invention
Fig. 3 is a plan view of Fig.
Fig. 4 is an enlarged sectional view of Fig. 3
Fig. 5 is an enlarged sectional view of Fig. 2

도 1에서와 같이, 본 발명에서 제안하는 탈기기용 스프레이 노즐(1)은 선단(2)에 확산홈(3)이 형성되어 있고, 후단부에는 복수 분배관의 기존 오리피스공에 체결할 나사(4)가 형성되어 있다. As shown in Fig. 1, the spray nozzle 1 for a degasser according to the present invention has a diffusion groove 3 formed at a tip end 2 thereof, and at the rear end thereof, a screw 4 for fastening to a conventional orifice hole of a plurality of distribution pipes Is formed.

상기 확산홈(3)을 옆에서 본 모습은 >형이며, 노즐공(5)의 선단과 통한다. The shape viewed from the side of the diffusion groove 3 is " shaped ", and communicates with the tip of the nozzle hole 5. [

도 2에서와 같이 본 발명은, 분배관(6)의 오리피스공(7)에 나사(4)를 체결하여 간단히 설치할 수 있는 스프레이 노즐(1)의 노즐공(5)으로 복수가 분사될 때에는 확산홈(3)을 통해 홈의 길이방향으로 퍼지는 부채꼴 형태로 분사된다. 2, when a plurality of nozzles 5 are sprayed onto a nozzle hole 5 of a spray nozzle 1 which can be easily installed by fastening a screw 4 to an orifice hole 7 of a distribution pipe 6, And is ejected in a fan shape spreading in the longitudinal direction of the groove through the groove (3).

도 4 및 도 5에서 보듯이, 확산홈(3)에서 폭방향의 분사는 기존의 오리피스공에 의한 복수의 분사형태와 흡사하다.As shown in FIGS. 4 and 5, the spraying in the width direction in the diffusion groove 3 is similar to a plurality of spray forms by the existing orifice holes.

이에 대하여, 확산홈(3)으로 분사되는 복수는 부채꼴이다. 이러한 광각 분사는 확산홈(3)의 폭과 깊이에 따라 차이가 나겠지만, 확산홈의 끝(3a)이 노즐의 선단에 연한 노즐공(5)의 선단 보다 앞서 확산홈의 끝(3a)으로 복수의 일부가 분사되기 때문에 일어나는 현상이다.On the other hand, the plurality of projections into the diffusion grooves 3 are fan-shaped. This wide angle injection will vary depending on the width and the depth of the diffusion groove 3, but it is preferable that the end 3a of the diffusion groove is located at the tip of the nozzle hole 5 ahead of the tip of the nozzle hole 5, Is a phenomenon that occurs because a part of the ink is ejected.

상기 확산 분사 기술구조는 광각 분사의 각도는 시제품 시험결과에서 80~120일 때 고무적인 결과가 나왔으며, 복수압과 복수의 분사량에 따라 위 각도 범위 내에서 확산홈(3)의 폭과 깊이로 설계한다.The diffusing spraying structure has an encouraging result when the angle of wide angle spraying is 80-120 in the test result of the prototype product. The width and depth of the diffusing groove 3 in the upper angle range according to the multiple pressure and the plural injection amount Design.

복수가 가늘고 긴 원추형으로 분사되므로서 기포의 생성량이 작고 전체 표면적도 작아 주력 증기와의 접촉면적이 작을 밖에 없었던 기존의 오리피스공에 비해 본 발명의 광각 분사형 스프레이 노즐은 복수압과 복수량이 동일한 조건일지라도 광각 분사에 따라 기포가 증량되고 주력 증기와의 접촉면적도 크게 늘어나므로 보다 빠른 시간에 효율적으로 발전설비에서 요구하는 용존 산소 함유량까지 낮출 수 있다. As compared with the conventional orifice ball having a small contact area with the main steam due to the small amount of bubbles and small total surface area since the droplets are injected in a thin and long conical shape, the wide angle spray nozzle of the present invention, The bubbles are increased according to the wide angle injection and the contact area with the main steam is greatly increased, so that the dissolved oxygen content required by the power generation facility can be lowered in a shorter time.

이에 따라 대형 발전설비용 탈기기의 설계규모 축소가 가능해져 탈기기를 염가에 제작할 수 있는 길도 열린다.
As a result, it is possible to reduce the design size of deaerator for large-scale power generation facilities, thereby opening the way for deaerator to be manufactured at low cost.

1: (탈기기용 광각 분사형) 스프레이 노즐
2: 선단
3: 확산홈
4: 나사
6: 분배관
7: 오리피스공
1: (Wide angle spray type for degasser) Spray nozzle
2: Fleet
3: diffusion groove
4: Screw
6: Distribution pipe
7: Orifice balls

Claims (2)

탈기기의 증기 분배관에 천공된 노즐공에 설치하는 스프레이 노즐에 있어서, 노즐의 분출단을 >형으로 형성하여 복수가 부채꼴으로 광각 분사되도록 한 것을 특징으로 하는 탈기기용 스프레이 노즐.
A spray nozzle for a spray nozzle installed in a nozzle hole perforated in a steam distribution pipe of a deaerator, wherein a spraying end of the nozzle is formed in a shape so that a plurality of nozzles are jetted at a wide angle in a fan shape.
제 1항에 있어서, 상기 노즐의 분사 광각이 80~120인 것을 특징으로 하는 탈기기용 스프레이 노즐.The spray nozzle for a degasser according to claim 1, wherein the spray angle of the nozzles is 80 to 120 degrees.
KR1020170145764A 2017-11-03 2017-11-03 Dispersion Device of Spry Nozzle for Deaeration KR20190050400A (en)

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Application Number Priority Date Filing Date Title
KR1020170145764A KR20190050400A (en) 2017-11-03 2017-11-03 Dispersion Device of Spry Nozzle for Deaeration

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Application Number Priority Date Filing Date Title
KR1020170145764A KR20190050400A (en) 2017-11-03 2017-11-03 Dispersion Device of Spry Nozzle for Deaeration

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KR20190050400A true KR20190050400A (en) 2019-05-13

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101021916B1 (en) 2003-07-11 2011-03-18 두산중공업 주식회사 Spray of Compensate Water for Deaerator
KR20170107512A (en) 2015-02-26 2017-09-25 미츠비시 히타치 파워 시스템즈 가부시키가이샤 Spray nozzles and deaerators

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101021916B1 (en) 2003-07-11 2011-03-18 두산중공업 주식회사 Spray of Compensate Water for Deaerator
KR20170107512A (en) 2015-02-26 2017-09-25 미츠비시 히타치 파워 시스템즈 가부시키가이샤 Spray nozzles and deaerators

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