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1、HANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：1DATE：2012-11-23EDITION：ADRAIN VALVEChapter0 CONTENT VERSION00.1 CONTENTSee next pageHANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：2DATE：2012-11-23EDITION：ADRAIN VALV
2、ECONTENT00 Catalog, version . 100.1 directory . 200.2 version . 3Chapter 0 Overview . 40.1 Equipment Model . 40.2devices applicable standard . 4Chapter 1 Device Description . 51.1 General data . 51.1.1 Operation Characteristics . 51.1.2 installation characteristics . 51.2 Detailed Description . 61.2
3、.1 Main parts . 61.2.2 Accessories . 71.3 Installation Requirements . 7Chapter 2 Run Rules . 8Start . 8 2.1 first start and overhaul2.2 Normal operation . . 82.3 Troubleshooting . . . . . . 8Chapter 3 Maintenance . . 93.1 during the normal operation of consumable spare parts list . . 93.2 special to
4、ols . . 93.3-handling device . . 93.4 spare parts storage conditions . . . 93.5 Maintenance Requirements . . 113.5.1 routine maintenance . 113.5.2 Preventive Maintenance . 113.5.3 regularly test . 113.5.4 disintegration maintenance . 113.5.5 the equipment outage during the maintenance and Notes . 12
5、3.5.6 special parts . 12Chapter 4 drawings . 134.1 General Plan . 14 HANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：3DATE：2012-11-23EDITION：ADRAIN VALVE00.2 VERSIONVERSIONDATECHAPTERPAGEAMENDMENT RANGE AND FOUNDATIONA2012-11FIRST VERSIONHANGZHOU LIANGGONG V
6、ALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：4DATE：2012-11-23EDITION：ADRAIN VALVEChapter 0 Overview Float-drain valve (referred to as drain valve), capable discharging in time of steaming pipe the condensate to prevent steam leak in the network and heating equipment, so as t
7、o ensure the normal operation of thermal equipment and pipe network has a significant effect on the energy conservation. Widely used in the chemical, refining, power, textile, paper and other industrial and mining enterprises, in particular, is more suitable for low pressure, high requirements of la
8、rge displacement and temperature stability, and should not be slack condensate steam equipment.01 Equipment modelThis manual corresponding model see table 0.1Table 0.1 Corresponding information of equipmentNO.ModelEquipment function codeValve DNSafety ClassWarranty ClassAnti-knock Grade1LGS45-16/15N
9、AQNCNA02 Equipment applicable standardsa). GB/T9113-2010 Integral steel pipe flangesb). GB/T12250-2005 steam drain valve term, sign, structure lengthc). GB/T22654-2008 steam drain valve technical conditionsHANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：5DAT
10、E：2012-11-23EDITION：ADRAIN VALVECHAPTER 1 EQUIPMENT DESCRIPTION1.1 General Data1.1.1 Operation CharacteristicsDrain valve is mainly made up of body, float, filters, valve cover, valve seat, etc.Medium flows into the valve body, according to the principle of buoyancy, the float valve body of lifting
11、movement change with the water level according to the opening and closing of valves, work as drain blocking air role.Drain valve main features: continuous drainage, stable performance, large displacement, small amount of leakage can be ranked saturated water continuously, resulting in a smaller stoc
12、k of stagnation of equipment condensate, heating up fast, stable heating temperature, automatic exhaust cold air device, no air lock phenomenon, the work is steady and no noise.1.1.2 Main Installation FeaturesNO. MODELEquipment function codeEquipment outline size（mm）Approx. Weight（Kg）Connection1LGS4
13、5-16/1951002057Flanged GB/T9113-2010HANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：6DATE：2012-11-23EDITION：ADRAIN VALVE1.2 Detailed Description Pic.2 The DRAIN VALVE structure diagram1. Outfall drain plug 2. Valve body 3. Drain plug 4 locking screws 5 seat
14、6 float ball 7 Hole Collar 8 filters9. Valve cover gasket 10 valve cover 11 bolt head bolt 12 nut 13. Drain seat 14 top heart1.2.1 Main PartsName MaterialFunctionValve bodyCF8Motionless part，Pressure-containing part Valve seat304Motionless part to control flow area and achieve valve functionFloat ba
15、ll304Motion part to control flow area and achieve valve functionValve coverCF8Motionless part，Pressure-containing partHANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：7DATE：2012-11-23EDITION：ADRAIN VALVE1.2.2 AccessoriesNO1.3 Installation Technical Requiremen
16、ts1.3.1 Check-up before installation1.3.1.1 Clean the pipeline before installation. Because any smudginess may damage the valve sealing surface, even prevent the valve normal close and open, so make sure any dirt, metal debris, welding slag etc. in the pipline is cleared before installation. 1.3.1.2
17、To check valve type, tag no. size, pressure, temperature, safety class etc. according to the lay-out drawing before installation.1.3.1.3 To check valve nameplate content ensure valve type, connection size, flange size, valve material, operating temperature, applicable media meet the processing condi
18、tion. 1.3.1.4 Valve appearance and cleanliness examination before installation: a. Clear and fixed marking; b. Valve body two ends are well sealed before installation, no rust and smudginess inside the body; c. No mechanical damage; d. No pollution1.3.1.5 Throw or drop is forbidden during the handli
19、ng and installation.1.3.2 Installation Requirements1.3.2.1 Fluid flow should be in the same direction indicated as the flow arrow on valve body; Center flow channel should be in the same axis as the pipeline center channel.1.3.2.2 In order to avoid the fatigue damage of the valve seat, the valve is
20、not suitable for installation in place of the maximum working pressure in the pipeline. 1.3.2.3 Valve should be installed in the natural state, to prevent the valve due to piping, support, etc. larger mounting stress.1.3.2.4 Valve installation should be according to the lay-out and also easy for val
21、ve installation, maintenance, besides, meet the follow requirement:：a. Valve commissioning space required;b. Actuator disassembly space required;1.3.2.5Valve identification plate be hang on valve before installation.HANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：0
22、0PAGE：8DATE：2012-11-23EDITION：ADRAIN VALVECHAPTER 2 OPERATION DETAILS2.1 Valve First or After Maintenance Operation 2.1.1 Check valve processing pressure, flow, temperature accordingly before put into operation.2.1.2 There are often smudginess such as welding beads, metal shavings, burr etc. deposit
23、ed in the system pipeline when valve first or after maintenance operation, so care should be taken when clean these smudginess, especially to protect the valve seat and float ball2.2Normal Operation2.2.1 Medium flows into the valve body, according to the principle of buoyancy, the float valve body l
24、ifting movement with the water level so changes the opening and closing of valves, working as a drain blocking air role.2.2.2 Automatic emptying means, such as if valves is not in normal state in the work process, remove the air vent on the cover to release, so that the discharge the air out the val
25、ve, and then tighten the drain plug, enable the valve to resume normal work .2.2.3Ex-work commissioning has been made according to customer requirement, installed and ready for operating.2.2.4 After product put into normal operation, users just check the indicated input pressure stable and output pr
26、essure indicated accordingly or not. Follow table 2.3 shows some failures and how to remove it.2.3 Malfunction and TreatmentNO.FailuresCausesRemovals1Undrained. Filter, or seat clogging;working differential pressure gaugeThe water can not go up due to the occurrence of water hitting damageWashing li
27、nes, filters and valves dirt. DRAIN VALVE change the appropriate model. Replacement float2Do not shut down, spout. Installation errors. Foreign body float and valve seat. Bypass valve failureRequire the installation in accordance with the installation diagramDisintegration cleaning, remove the forei
28、gn body. Replacement bypass valve3Steam leakage float, the seat does not seal occupies a position of the valve body and valve cover bolts loose, causing the gasket leak. Bypass valve failureGrinding seat or replace the float. Tighten the bolt, replace the gasket. Replacement bypass valve 注：排除方法的具体操作
29、步骤详见3.5.4解体维修章节HANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：9DATE：2012-11-23EDITION：ADRAIN VALVECHAPTER 3 MAINTENANCE3.1Consumable spare list during normal operation Table 3.1 NO.Spare NamePart no.Reference Drawing no.Equipment tag no. QtyUnitWarranty Gra
30、deRemarks1Filter net8LGS45Y16P015-0All tag nos. corresponding to the drawing no/pieceQNC Valve seat5/pieceQNCFloat ball6/pieceQNC3.2 Special ToolsNO3.3 Transportation Equipment NA3.4 Spare Parts Storage Condition3.4.1 Original packaging or not Applicable3.4.2 Storage EnvironmentStorage area classifi
31、cationStorage area refers to the ambient area of an equipment, which not must be an isolation region.An equipment alone can composed a storage area if itself appearance is isolating with the ambient. Storage area can be classified into I, II, and III strictly according to requirement. I Storage Area
32、：Composed by a closed space that can withstand the atmospheric environment, and its ground being laid or by dense material which will not produce any dust. Storage temperature should be maintained above 16, in order to reduce the inside moisture condensation. Equipment should be placed on the shelf
33、or plate. The area should be cleaned regularly.II Storage Area：Composed by a closed space that can withstand the atmospheric environment, and its ground being laid or by dense material which will not produce any dust. Equipment should be placed on the shelf or plate. The area should be cleaned regul
34、arly.HANGZHOU LIANGGONG VALVE CO.,LTD.EQUIPMENT OPERATION AND MAINTENANCE MANUALCHAPTER：00PAGE：10DATE：2012-11-23EDITION：ADRAIN VALVEIII Storage Area：Outdoor storage, which can be drained smoothly, ground should be fine stone and concrete slab. Equipment should be placed on the shelf or plate. The ar
35、ea should be cleaned regularly.Valves and spare parts should be stored in the II storage area.3.4.3 Temperature and humidityStored in a ventilated, dry, clean and norm temp. Finished products warehouse, stacked in open area is prohibited.3.4.4 CleanCleaned before ex-work. Users can open and put valv
36、e into operation directly.3.4.5 Special requirement for storage, transportation and isolation3.4.5.1 Transportationa) Opening transport: it can be chosen when this transportation would not damage the equipment. Flame-retardant waterproof tarpaulin covers should be used at necessary conditions. Inter
37、nal air circulation in the waterproof cover should be ensured to prevent water condensation.b) Closed transport: if equipment not suitable for opening transport, closed transport should be chosen.c) It is necessary to prevent injury and burr during the transportation, rough handling is prohibited. d
38、) It is necessary to prevent pollution during the transportation according to relevant provisions e) Packaging layer, plug covers should in intact after loading and uploading, or should be replaced.3.4.5.2 StorageUnless acceptance inspection is required, the packed or maintainable equipment should b
39、e kept original condition until the end of storage period. (Cover and plug should stay in place). Restore the packaging and protective layer after inspection finished. The packaging outermost layer should have signs or marks which stated word: Do not open the package before the final inspection. a) Stainless steel equipment shall not contact with carbon steel or contaminants during loading and upl