1、MIL-B-2128D 45 m 9999706 O476460 7 m MILB-2128D(SH) 7 MAP 1991 SUPERSEDING 8 March 1% MIL-B-2128C(SHIPS) MILITARY SPECIFICATION BURNERS, STEAM AND OIL PRESSURE, ATOMIZING This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all
2、departments and agencies of the Department of Defense. 1, SCOPE 1.1 Scope. This specification covers the straight pressure, vented plunger and steam pressure atomizing oil burners for use in fossil fueled propulsion boilers aboard Naval ships. Burner assemblies consist of the atomizer, air register,
3、 and safety shutoff devices. 1,2 Classification, Burners must be of the following types and classes as specified (see 6.2): Type A Type C Type D Class 1 Class 2 Straight pressure atomizing fuel oil burners Steam and oil pressure atomizing burners Vented plunger pressure atomizing fuel oil burners Fo
4、r normal mounting through boiler furnace double casing For mounting through boiler furnace double casing with air register hinged to provide for furnace access. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be
5、 addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 2362-5101 by using the self-addressed Standardmtion Document Improvement Proposai (DD Form 1426) aDoearine at the end of this document or bv letter. AMSC NIA FSC 4530 DISTRIBUTION STATEMENT A. Appro
6、ved for public release; distribution is unlimited. e Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - - . - MIL-B-2228D 45 997790b 0476463 9 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. this document to the
7、extent specified The following specifications and standards form a part of herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (se
8、e 6.2). SPECIFICATIONS FEDERAL FF-N-836 FF-S-85 FF-S-86 FF-S-92 FF-s-200 FF-s-210 MILITARY MIL-S- 1222 MIL-T-5624 MILP-15024 MIL-P- 15024/5 MIL-F-16884 STANDARDS MILITARY MIL-STD-278 Nut: Square, Hexagon, Cap, Slotted, Castle, Knurled, Welding and Single Ball Seat Screw, Cap, Slotted and Hexagon Hea
9、d Screw, Cap, Socket-Head Screw, Machine: Slotted, Cross-Recessed or Hexagon Head Setscrews: Hexagon Socket and Spline Socket, Headless o Setscrews: Square Head (Inch) and Slotted Headless (Inch and Metric) Studs, Bolts, Hex Cap Screws, Socket Head Cap Screws and Nuts Turbine Fuel, Aviation, Grades
10、JP-4, JP-5, and JP-WJP-8 ST Plates, Tags, and Bands for Identification of Equipment Plates, Iden ti fica tion Fuel, Naval Distillate Welding and Casting Standard (Unless otherwise indicated, copies of federal and military specifications and standards are available from the Standardization Documents
11、Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-2 128D (SH) 2.1.2 Other Government documents, drawings, and publications, The following other Government documents, dra
12、wings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWING NAVAL SEA SYSTEMS COMMAND (NAVSEA) 803-5959293 Typical Arrangement of Fuel Oil Burner Leads for Boiler (Applications for copies sho
13、uld be addressed to the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) NAVAL SHIP SYSTEMS ENGINEERING STATION (NAVSSES) 4168 4171 4173 4461 4514 4543 4787 4789 4790 llY1308 llY1309 Sprayer Plate, Racer-Navjet Stream Atomizer Sprayer Plate - Stand
14、ard High Capacity Sprayer Plate - Standard Straight Mechanical, Dished and Fiat Assembly of Vented Plunger Atomizer for 21 Inch Convergent Throat V P Atomizer Skirt Diffuser for Use with 21 Inch Convergent Throat NAVSSES 21 Inch Convergent Throat Ring NAVSSES 16-7/8 Inch and 18 Inch Convergent Throa
15、t Ring for B and W Boilers V P Atomizer Skirt Diffuser for B and W Burner and Convergent Throat Assembly of VP Atomizer for 16-7/8 Inch and 18 Inch Dia. Convergent Throat Registers Detail of Sprayer Nut Detail of Nozzle Body (Application for copies should be addressed to Naval Ships Systems Engineer
16、ing Station, Code 022C, Philadelphia, PA 19112-5083.) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited
17、in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) B 165 Pipe Hanges and Flanged Fittings; (DOD adopted) (Application for copies should be
18、addressed to the American Standards Institute, 1430 Broadway, New York, NY 10018.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- - _. - MIL-B-212D Li5 = 9999906 0476463 2 MIGB-2 128D (SH) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A 105
19、 D 3951 E 18 Standard Specification for Forgings, Carbon Steel, for Piping Components Standard Practice for Commercial Packaging; (DOD adopted) Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials; (DOD adopted) (Application for copies should be addressed to the American Society
20、 for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational service
21、s.) 23 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIR
22、EMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.5) in accordance with 4.4. 3.2 General construction. Construction shall be light and compact to the greatest extent practicable and consistent with requirements herein. Fabrication weld
23、ing and inspection shall be in accordance with MIL-STD-278. 3.2.1 General description. Each burner specified herein shall consist of an adjustable air register of the swirl nonventuri type, atomizer assembly, and safety shutoff device. Burners shall be constructed to prevent buckling, warping, or ja
24、mming of parts that require adjustments. Material shall be of a Navy approved type for the conditions encountered. The material of burner parts subjected to radiant heat (up to 1600 OF) from the furnace shall be of Navy approved heat-resisting alloy. Burners shall burn Naval distillate fuel that con
25、forms to MIL-F-16884 or JP-5 aviation turbine fuel that conforms to MILT-5624. Burner registers shall be provided with at least one observation port, having a lens of cobalt blue heat resisting glass. At least one port on the register shall be usable as an insertion port for the lighting off torch f
26、or emergency lightoffs. Provision shall be incorporated to permit the atomizer to be removed from the air register and replaced without the use of a tool and to prevent discharge of furnace gases into the fireroom when the atomizer assembly is removed from the burner. The fuel oil and steam (for typ
27、e C burners) shall be supplied to the burner by means of branch line connections from the fuel oil supply and steam manifolds to the burner. 3.2.2 Shutoff devices, The following means for shutting off the fuel oil and steam (if applicable) shall be provided for each burner in addition to the flanged
28、 root valves provided between the burner and supply manifolds. 4 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-B-ZLZD 45 m 9799906 0476464 4 m MIL-B-2128D (SH) a. A safety shutoff device including separate steam and oil (if applicable) valv
29、es that must be placed in the closed position before the atomizer assembly can be removed from the burner. The shutoff device shall have zero leakage when pressurized with Navy fuel at maximum system oil pressure with the burner installed or removed with shutoff valves closed. . b. Spring loaded che
30、ck valves that open only when the atomizer assembly is installed properly and closes when the atomizer assembly is loosened or removed from the burner. c. For type C burners, the safety shutoff device shall incorporate the capability of purging steam through the atomizer with the oil valve shut. The
31、 steam and oil valves shall be interlocked so that it is not possible to open the oil valve with the steam valve closed. 3.23 Burner lead connections. Forged carbon steel 1/2 inch nominal pipe size (nps) 600 pounds per square inch (lb/in2) socket welded flanges in accordance with ASTM A 105 and ANSI
32、 B 16.5 shall be provided to connect burner leads in accordance with Drawing 803-5959293. Hange holes shall straddle the centerline. 3.2.4 Atomizer/diffuser assembly setting and adjustments. Provisions shall be made for adjusting and locking the atomizer assembly in proper position with respect to t
33、he diffuser to maintain the optimum atomizer tip setting. The burner shall also include an adjustment for positioning the atomizeddiffuser assembly relative to the throat ring or inner burner front wall (as applicable). The adjustment shall be lockable at either the inner or outer stop setting. 3.2.
34、5 Allowance for movement and withdrawal. Oil burners shall be engineered for relative movement between the connections to the inner and outer burner front casing plates, in such a way that the atomizers and air registers cannot be thrown out of alignment by warping or expansion of the casings under
35、high temperature conditions. Provisions shall be made to prevent accumulations of fuel oil drip between inner and outer casings under all conditions of operation. The construction of the burners shall permit convenient removal of the entire burner assembly through the burner front plate. 3.2.6 Air r
36、egister. Air register dimensions shall be as specified (see 6.2). The air doors in the air register shall be moving under all operating conditions. The air doors shall cycle from closed position to fully open position with less than one turn of the air door operating lever or handle. 3.2.7 Hinged ai
37、r registers. The hinged air registers specified for class 2 burners shall be so constructed that the burner can be swung out to provide access to the furnace through the burner opening, and be swung back into position. 3.2.8 Capacity to weight factor, Each burner at rated capacity shall deliver at l
38、east 8 pounds of fuel oil per hour per pound of burner weight. For calculations, all parts of the burner necessary for satisfactory operation are considered part of the burner weight except the burner throat refractory material, the retaining devices for this refractory material, and the branch fuel
39、 oil and steam lines. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - p_pp- MIL-B-212D 45 9799906 0476465 6 m MILB-2128D(SH) t 3.2.9 Capacity to area factor. Each burner at rated capacity shall deliver not less than 3.4 pounds of oil per hour pe
40、r square inch of circular area covered by the closed burner (air doors shut) at the burner inner front plate (exclusive of holding ears or points in the case of polygonal base rings). This ratio shall apply to burners of capacity as great as 1,000 pounds per hour but shall be increased 0.1 pound of
41、oil per hour per square inch for each 100 pound per hour increase in burner capacity. Up to and including 2,100 Inches 22 3.2.10 Low capacity operation. Type A burners shall maintain a stable flame pattern down to a supply fuel oil pressure of 125 lb/in2. For all other burners, a stable flame patter
42、n shall be maintained down to the specified minimum oil pressure. For type C and D atomizers the low capacity at the minimum fuel oil pressure shall be not more than the rated capacity at maximum oil pressure divided by the specified turndown (normally 10 to 1 or 12 to 1). For atomizers specifically
43、 designated as lightoff atomizers, the minimum capacity shall be not more than 200 pounds of oil per hour, or as specified (see 6.2). From 2,101 to 3,300 Inches 25-1/2 3.2.11 Limiting firing distances. The least permissible distances for a service (multiple burner) installation shall be determined f
44、or each type and size of burner (see 4.4.1.7) and shall govern the determination of the position of burners in any boiler. These limiting firing distances shall be not less than those specified in table I. TABLE I. Limiting firing distances. 25 I 25 Centerline of burner to 31 - 25 31 26 25 Centerlin
45、e of adjacent burners Furnace floor Nearest tube surface towards which gas is flowing Water-cooled side wall Side wall refractory mnds of oil per hour From 3,301 to 6,000 Inches 30 25 31 28 - Above 6,000 Inches 36-112 25 31 28 - 3.2.12 Air pressure drop across burner. The air pressure drop across th
46、e burner shall be as low as practical, consistent with the complete burning of the fuel within the available firing depth, and the adequate mixing of the air and fuel oil. If a maximum allowable air pressure across the burner register, at maximum burner capacity is cited in the contract (see 6.2), t
47、he contractor shall design to hold pressure drop at or less than this limit. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-, MIL-B-ZLZD 45 W 9977906 047b4bb W MIGB-2128D(SH) 3.2.13 Fuel data. For construction and evaluation purposes, the followin
48、g ultimate analysis, heating valves, and furnace heat releases shall be use: Carbon . Hydrogen . Oxygen . Sulphur Nitrogen Heating valve Total furnace heat release at maximum capacity of burners per unit of furnace volume . 85.8 percent 13.2 percent 0.1 percent 0.8 percent 0.1 percent 19,500 British
49、 thermal units per pound (Btuflb) of oil 700,000 British thermal units per hour per cubic foot (Btu/hr/ft3) of furnace volume 3.2.14 Threaded parts. Unless otherwise specified herein, or approved by the contracting activity, all bolts, nuts, studs, and machine screws shall conform to FF-N-836, *-S-85, FF-S-86, FF-S- 92, FF-S-200, FF-S-210, or MIL-S-1222, as applicable. 3.2.15 Accessories. Unless otherwise specified (see 6.2), the followin
