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法蘭連接煤化工專用球閥系列 Q347Y

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法蘭連接煤化工專用球閥系列 Q347Y

詳細(xì)介紹

主要零件和材質(zhì) Main parts and materials

序號(hào) NO	零件名稱 Accessor name	材質(zhì) Material
序號(hào) NO	零件名稱 Accessor name	GB系列
1	螺母 Nut	45#
2	螺柱 Bonnet bolt	35#
3	閥蓋 Bonnet	WCB
4	密封壓環(huán) Sealing ring	F304
5	密封圈 Sealing ring	石墨
6	蝶簧 Spring	Inconel750
7	閥座 Seat	F304 噴Ni55
8	內(nèi)六角螺釘 Nut	35#
9	后蓋 Bottom cover	A105
10	后蓋墊 Bottom cover	石墨
11	固定軸 Seat ring	17-4PH
12	軸套 Bush bearing	304+HF
13	排污塞 Drain valve	F304
14	閥體 Body	WCB
15	中墊 Gasket	不銹鋼+石墨
16	球體 Ball	F304 噴Ni60
17	填料 Packing	石墨
18	閥桿 Stem	17-4PH
19	填料箱 Packing	F304
20	填料壓蓋 Gland	WCB
21	螺柱 Bonnet bolt	35#
22	螺母 Nut	45#
23	支架 Yoke	WCB
24	螺母 Nut	45#
25	外六角螺柱 bonnet bolt	45#

產(chǎn)品結(jié)構(gòu)特點(diǎn) afeatures

1)密封比壓高：水煤漿工況用硬密封球閥由于采用金屬材料為密封面，所需要的密封比壓比軟。
密封要高得多：因此如何從設(shè)計(jì)上保證適當(dāng)?shù)拿芊獗葔?，提高零件的形位公差以及提高表面光潔度要求是十分重要的?br> 2)球體表面硬度高：煤粉顆粒的硬度較高，此工況情形下，在閥門關(guān)閉的狀態(tài)時(shí)要求球體表面。
硬度層有較高的硬度,否則,當(dāng)閥門開啟的過程中會(huì)有煤粉顆粒鑲嵌在球體表面上，
從而破壞球體表面,以至于影響到閥門的整體密封性能。
3)噴焊層結(jié)合強(qiáng)度高：煤粉在管線中的流動(dòng)速度很快，因此要求球體密封面必須有較高的硬度。
和強(qiáng)度,同時(shí)還要求所噴焊的密封材料和基體材料有較高的結(jié)合強(qiáng)度，以及基體材料本身的強(qiáng)度較好，這樣噴焊層才不能從基體表面脫落，而失去密封性能。
4)自潔功能：煤漿的吸附性較強(qiáng)，容易粘在球體表面上。在閥門啟閉過程中，介質(zhì)顆粒被帶到。
閥座與球體的密封面之間，破壞了球體與閥座之間的密封副，從而影響閥門的密封性能，使閥門的使用壽命大大縮短。這就要求閥門具有很好的“自潔"功能，從而保證球體和閥座密封副不被破壞。
5)加工難：由于水煤漿工況用硬密封球閥的密封表面均采用超硬材料或表面硬化處理，用普通刀具無法加工,即使能加工其加工精度也不能滿足要求，同時(shí)還要求加工設(shè)備具有足夠的強(qiáng)度，因此選擇合適的刀具非常重要。

1) The sealing ratio is higher than the pressure: the sealing ball valve in the working conditions of the coal slurry USES the metal material as the sealing cover and the required sealing ratio is softer than the pressure ratio.
The sealing is much higher: therefore, it is very important to ensure proper sealing ratio of the design, improve the position tolerance of the parts and improve the surface finish.
2) The surface hardness of the ball is high: the hardness of coal particles is higher, and the surface of the sphere is required when the valve is closed in this condition.
Hardness layer has high hardness, otherwise, when the valve is opened in the process of coal particles are embedded in a sphere surface, undermining the sphere surface, that affect the overall sealing performance of the valve.
3) The bonding strength of the spray welding layer is high: the coal powder is flowing fast in the pipeline, so it is necessary to have a high hardness on the sealing surface of the ball.
And intensity, and at the same time also requires the spray welding sealing material and base material has high bonding strength, and the strength of the
substrate material itself is good, so just can't fall off from the substrate surface spray welding layer, and lose the sealing performance.
4) Self-cleaning function: the adsorption properties of coal pulp are strong and easy to stick to the surface of the ball. During the valve opening process, the medium particles are carried.
Between the seat and the ball's sealing surface, the seal between the ball and the seat is broken, which affects the sealing performance of the valve and greatly reduces the service life of the valve. This requires the valve to have a good "self-cleaning" function to ensure that the ball and seat seal are not damaged.
5) Processing hard: as the working condition of coal water slurry with hard seal ball valve sealing surface adopt superhard material or surface hardening treatment, use common tool will not be able to process, even to the machining precision can't meet the requirements, at the same time also require processing equipment has enough strength, therefore is very important to choose the appropriate tools.

技術(shù)規(guī)范 Technical specification

設(shè)計(jì)依據(jù) Design reference	GB系列 GB series
設(shè)計(jì)標(biāo)準(zhǔn) Design standard	GB/T12237 GB/T21385
結(jié)構(gòu)長度 Face to face	GB/T12221
連接法蘭 End flange	GB/T9113 HG20592
試驗(yàn)和檢驗(yàn) Test & inspection	GB/T 26480

試驗(yàn)壓力 Test prssure

壓力等級(jí) Pressure grade	試驗(yàn)壓力 Test pressure
公稱壓力 PN Nominal pressure	殼體試驗(yàn) Sheil test	正密封試驗(yàn) Sealing test	反密封試驗(yàn) Sealing test	氣密封試驗(yàn) Air seal test
1.6	2.4	1.76	1.76	0.6
2.5	3.75	2.75	2.75	0.6
4.0	6.0	4.4	4.4	0.6
6.3	9.45	6.93	6.93	0.6
10.0	15.0	11.0	11.0	0.6

球閥結(jié)構(gòu)長度和外接尺寸 Main connection dimensions

PN:1.0~1.6			PN:2.5~4.0		PN:6.3		PN:10.0
公稱通徑 DN	L (mm)	H (mm)	L (mm)	H (mm)	L (mm)	H (mm)	L (mm)	H (mm)
100	305	415	305	415	406	500	432	480
125	356	450	381	450	508	530	508	645
150	394	470	403	470	495	485	559	646
200	457	520	502	520	597	580	660	665
250	533	610	568	610	673	665	787	735
300	610	650	648	650	762	760	838	790
350	686	740	762	740	826	820	889	1020
400	762	795	838	795	902	870	991	1080
450	864	860	914	860	978	930
500	914	945	991	945	1054	995
600	1067	1040	1143	1040	1232	1100