CN106195374A - A kind of processing technology of naval vessel back-fire relief breathing unit - Google Patents
A kind of processing technology of naval vessel back-fire relief breathing unit Download PDFInfo
- Publication number
- CN106195374A CN106195374A CN201610892082.4A CN201610892082A CN106195374A CN 106195374 A CN106195374 A CN 106195374A CN 201610892082 A CN201610892082 A CN 201610892082A CN 106195374 A CN106195374 A CN 106195374A
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- sandwich layer
- pressure
- fire relief
- cargo tank
- valve disc
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
The processing technology of a kind of naval vessel back-fire relief breathing unit, the back-fire relief sandwich layer in described flame arrester arrangement includes following operating procedure: A), according to the ventilation requirement of pipeline, determine back-fire relief sandwich layer diameter；B), the making of back-fire relief sandwich layer: 1), use the corrugated guipure of Mold Making；2), the plate shaped guipure of Mold Making is used；3), becoming a piece of sandwich layer, corrugated guipure must not loosen with plate shaped guipure with a piece of plate shaped guipure compact winding a piece of corrugated guipure, every core layer surface should be smooth, and Glabrous stings；Pore-size on every sandwich layer fire-retardant core layer, should uniformity, nothing blocking completely；4), by two panels sandwich layer being combined into back-fire relief sandwich layer, the runner on a piece of sandwich layer is angled with the runner on another blade sandwich layer to be arranged；5), back-fire relief sandwich layer should ensure that each hole is unimpeded.The present invention can make cargo tank breathe the existing respiratory function of adnexa, has again back-fire relief function, and in keeping cargo tank at ordinary times, pressure is in certain limit, provides protection to cargo tank.
Description
Technical field
The invention belongs to naval vessel parts technical field, relate to the processing technology of a kind of naval vessel back-fire relief breathing unit.
Background technology
The needs ensured along with expanding economy and national defence, present naval vessels quantity gets more and more, technology protection, safety
Prevention work also highlights more and more important, and therefore naval equipment portion proposes ship's fitting optimization raising requirement.According to
GJB4000-2000 " General Specifications For Ships " 541.6.8 clause regulation: " each cargo tank, before entering total gas permeable devices, should fill and cut
Only valve or other quarantine measures ", CB/T3650-94 " oil carrier Design of Breathing System principle " 3.2.3 clause regulation: " when employing group
During mould assembly system, isolating device to be set up between each cargo tank and public house steward "；The fire retardant device of prior art is in work
Time, it is impossible to ensure the eupnea of cargo tank.
Summary of the invention
The purpose of the present invention to solve above-mentioned technical problem.
The object of the present invention is achieved like this: a kind of naval vessel back-fire relief breathing unit, including valve body, its feature exists
In: described valve body is cross valve, and the right-hand member of cross valve is provided with outlet(discharge) flange dish；The left end of cross valve is with flame arrester arrangement even
Connecing, flame arrester arrangement is made up of back-fire relief sandwich layer and outside back-fire relief housing, and back-fire relief sandwich layer is drawer-type structure at back-fire relief housing；Back-fire relief
The left end of housing is provided with the Flange joint of suction flange, suction flange and cargo tank interface, and pad B is passed through at the top of back-fire relief housing
Being connected with boring cover, the right-hand member of back-fire relief housing and the junction of cross valve are provided with relief valve；The top of cross valve is provided with upper cover,
Pad C it is provided with between upper cover and the top board of cross valve；The bottom of cross valve is provided with the fixed cover being vertically arranged, fixed cover
Left part is provided with opening, is provided with getter assembly in fixed cover, and getter assembly is made up of vacuum valve seat and vacuum valve disc, vacuum valve
Seat is two sections of multidiameters, the big end subjacent at fixed cover of two sections of multidiameters and the step surface by pad A with fixed cover
Connect, two sections of multidiameters be provided centrally with through hole A, the small end of two sections of multidiameters is provided above vacuum valve disc；Vacuum valve disc
Top center be provided with valve opening；The bottom surface of fixed cover and the bottom surface of vacuum valve seat are provided with air entry screen cover；Fixed cover
Top inner ring is provided with expiration assembly, and expiration assembly is made up of pressure valve seat and pressure valve disc, being provided centrally with of pressure valve seat
Through hole B, the top of pressure valve seat is provided with pressure valve disc, and the valve rod of pressure valve disc is through the valve of through hole B with vacuum valve disc top
Hole connects；Back-fire relief sandwich layer in described flame arrester arrangement is made up of two panels sandwich layer, and every sandwich layer is wound around by two-layer stainless steel band
Forming, one layer of stainless steel band is corrugated guipure, and another layer of stainless steel band is plate shaped guipure, if being provided with on every sandwich layer
The through hole of dry triangle, the through hole of each triangle all forms runner, and the runner of two panels sandwich layer is angled to be arranged；Described pressure
Power valve seat, pressure valve disc, vacuum valve disc, vacuum valve seat center all on same centrage and this centrage is positioned at cross valve
The left side of centrage.
The processing technology of a kind of naval vessel back-fire relief breathing unit, the back-fire relief sandwich layer in described flame arrester arrangement includes following behaviour
Make step:
A), according to the ventilation requirement of pipeline, back-fire relief sandwich layer diameter is determined；
B), the making of back-fire relief sandwich layer:
1), the corrugated guipure of Mold Making is used；
2), the plate shaped guipure of Mold Making is used；
3), with a piece of plate shaped guipure compact winding, a piece of corrugated guipure being become a piece of sandwich layer, corrugated guipure is with plate shaped
Guipure must not loosen, and every core layer surface should be smooth, and Glabrous stings；Pore-size on every sandwich layer fire-retardant core layer, should be complete
Full uniformity, without blocking；
4), by two panels sandwich layer being combined into back-fire relief sandwich layer, the runner on a piece of sandwich layer is at an angle of with the runner on another blade sandwich layer
Arrange；
5), back-fire relief sandwich layer should ensure that each hole is unimpeded.
The present invention can make cargo tank breathe the existing respiratory function of adnexa, has again back-fire relief function, and in keeping cargo tank at ordinary times, pressure exists
Certain limit, provides protection to cargo tank；During breaking out of fire, flame out of my cabin can be stoped to scurry into cargo tank, stop different cabins flame
Altering mutually, can guarantee that again the eupnea of cargo tank simultaneously, popularization and application have good economic and social benefit.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the present invention.
Fig. 2 is the left view of the present invention.
In figure: 1. valve body；2. pressure valve seat；3. pressure valve disc；4. vacuum valve disc；5. vacuum valve seat；6. pad A；7.
Air entry screen cover；8. relief valve；9. flame arrester arrangement；10. pad B；11. upper covers；12. pad C.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings, but not as limitation of the present invention:
A kind of naval vessel back-fire relief breathing unit, including valve body 1, described valve body 1 is cross valve, and the right-hand member of cross valve is arranged
There is outlet(discharge) flange dish；The left end of cross valve is connected with flame arrester arrangement 9, and flame arrester arrangement 9 is by back-fire relief sandwich layer and outside back-fire relief housing
Composition, back-fire relief sandwich layer is drawer-type structure at back-fire relief housing；The left end of back-fire relief housing is provided with suction flange, suction flange and oil
The Flange joint of cabin interface, the top of back-fire relief housing is connected with boring cover by pad B10, the right-hand member of back-fire relief housing and cross valve
Junction is provided with relief valve 8；The top of cross valve is provided with upper cover 11, is provided with pad between upper cover 11 and the top board of cross valve
Sheet C12；The bottom of cross valve is provided with the fixed cover being vertically arranged, and the left part of fixed cover is provided with opening, arranges in fixed cover
Having getter assembly, getter assembly is made up of vacuum valve seat 5 and vacuum valve disc 4, and vacuum valve seat 5 is two sections of multidiameters, two sections of ladders
The big end of axle at the subjacent of fixed cover and is connected with the step surface of fixed cover by pad A6, and the center of two sections of multidiameters sets
Being equipped with through hole A, the small end of two sections of multidiameters is provided above vacuum valve disc 4；The top center of vacuum valve disc 4 is provided with valve opening；
The bottom surface of fixed cover and the bottom surface of vacuum valve seat 5 are provided with air entry screen cover 7；The top inner ring of fixed cover is provided with expiration group
Part, expiration assembly is made up of pressure valve seat 2 and pressure valve disc 3, pressure valve seat 2 be provided centrally with through hole B, pressure valve seat 2
Top is provided with pressure valve disc 3, and the valve rod of pressure valve disc 3 is connected through through hole B with the valve opening at vacuum valve disc 4 top；Described
Back-fire relief sandwich layer in flame arrester arrangement 9 is made up of two panels sandwich layer, and every sandwich layer is entwined by two-layer stainless steel band, and one layer stainless
Steel band is corrugated guipure, and another layer of stainless steel band is plate shaped guipure, and every sandwich layer is provided with several trianglees
Through hole, the through hole of each triangle all forms runner, and the runner of two panels sandwich layer is angled to be arranged；Described pressure valve seat 2, pressure
Valve disc 3, vacuum valve disc 4, vacuum valve seat 5 center all on same centrage and this centrage is positioned at cross valve centrage
Left side.
The processing technology of a kind of naval vessel back-fire relief breathing unit, the described back-fire relief sandwich layer in flame arrester arrangement 9 includes following
Operating procedure:
A), according to the ventilation requirement of pipeline, back-fire relief sandwich layer diameter is determined；
B), the making of back-fire relief sandwich layer:
1), the corrugated guipure of Mold Making is used；
2), the plate shaped guipure of Mold Making is used；
3), with a piece of plate shaped guipure compact winding, a piece of corrugated guipure being become a piece of sandwich layer, corrugated guipure is with plate shaped
Guipure must not loosen, and every core layer surface should be smooth, and Glabrous stings；Pore-size on every sandwich layer fire-retardant core layer, should be complete
Full uniformity, without blocking；
4), by two panels sandwich layer being combined into back-fire relief sandwich layer, the runner on a piece of sandwich layer is at an angle of with the runner on another blade sandwich layer
Arrange；
5), back-fire relief sandwich layer should ensure that each hole is unimpeded.
When being embodied as, one), the functional parameter of the present invention is as follows:
1) when cargo tank pressure exceedes control malleation, air-out, provide protection to cargo tank；
2) when cargo tank pressure is less than when controlling negative pressure, suck air, provide protection to cargo tank；
3) cargo tank pressure is without departing from when controlling pressure, and unit is closed, and prevents fuel oil volatilization, reduces environmental pollution；
4) flame can be stoped to scurry into cargo tank；
5) while back-fire relief, it is ensured that the eupnea of cargo tank；
Two), the performance indications of the present invention are as follows:
1) design pressure: 0.3MPa；
2) pressure is opened: pressure valve≤+ 0.021MPa；Vacuum valve≤-0.002MPa；
3) back-fire relief ability: the 2h of resistance to burning, without tempering；Explosion arrestment performance: safe back-fire relief speed: 130m/s；
4) ventilation: >=760 m/h；
5) safety dumping pressure: 0.023MPa；
Three), expand impact to require: B level；
Four), MTBF: MTBF >=10000h；
Five), the operation principle of the present invention:
1), expiration principle:
Cargo tank communicates with the lower end of pressure valve disc 3, and air communicates with the upper end of pressure valve disc 3, when in cargo tank, pressure is controlling pressure
Time in the range of power, cargo tank pressure is less than the weight of pressure valve disc 3 to the active force of pressure valve disc 3, and because of action of gravity, pressure valve is closed
Closing, cargo tank disconnects with extraneous passage；
Oiling or ambient temperature raise, and in causing cargo tank, pressure raises rapidly, and when exceeding control malleation, cargo tank gas is to pressure
The active force of valve disc 3 is more than the own wt of pressure valve disc 3, and pressure valve opens vent the air overboard, and now vacuum valve cuts out, oil
Cabin pressure decreases, and when in cabin, pressure drops to control malleation, pressure valve disc 3 is closed by action of gravity, pressure valve, cargo tank
Disconnect with extraneous passage；
2), air-suction:
Cargo tank communicates with the upper end of vacuum valve disc 4, and air communicates with the lower end of vacuum valve disc 4, when in cargo tank, pressure is controlling pressure
Time in the range of power, air is less than the weight of vacuum valve disc 4 to the active force of vacuum valve disc 4, and because of action of gravity, vacuum valve cuts out；
Oil suction or temperature reduce, and in causing cargo tank, pressure reduces rapidly, when less than when controlling negative pressure, air is to vacuum valve disc 4
Active force is opened more than the own wt of vacuum valve disc 4, vacuum valve, and now pressure valve is closed, and cargo tank sucks air, cargo tank pressure
Raise；When in cabin, pressure rises to control negative pressure, vacuum valve disc 4 is closed by action of gravity, vacuum valve；
3), back-fire relief principle:
Back-fire relief function is realized by the back-fire relief sandwich layer in flame arrester arrangement 9；Back-fire relief sandwich layer is made up of two panels sandwich layer, and every sandwich layer is by two-layer
Ultra-thin stainless steel band is entwined, and one layer of steel band is pressed into corrugated, and another layer is flat strip, numerous little triangle
Runner composition passage, the runner of two panels sandwich layer forms a knuckle；
Fray-out of flame principle is heat transfer effect and wall effect；When flame is by back-fire relief sandwich layer, it is decomposed into numerous tiny by runner
Flame, wall effect is obvious, and heat transfer area is big, decreases combustion activity molecule, makes flame temperature decline rapidly, and burning can not continue
Continuing down and extinguish, back-fire relief effect is obvious.
Embodiment one, the fire-retardant core laminar flow of flame arrester arrangement 9 leads to areal calculation, ventilation: >=760 m/h, it is assumed that gas stream
Speed is for 7.5m/s(GJB4000 " General Specifications For Ships " 507.8.13 clause: air velocity in pipes is not more than 7.6m/s)；Need
Circulation area: 28148.15mm；The logical ratio of fire-retardant core laminar flow: 0.38；Back-fire relief sandwich layer diameter: 320mm(calculates 307.11mm).
Embodiment two, sealing surface grinding technique, back-fire relief breathing unit is closed, and answers No leakage, to metal sealing
Face surface roughness requirements is high, and surface roughness determines the sealing property of product, and metallic sealing section must reach by grinding
Sealing property requirement, uses following measures, it is ensured that surface accuracy, and 1) use linear sealing；2) man-hour is added, it is ensured that the table of sealing surface
Surface roughness；3) sealing surface carries out facing-up；4) grinding agent is correctly selected；5) suitable grinding technics is used；6), after grinding, sample is used
Block contrast abradant surface detects.
JIUYUE in 2016 9 days, back-fire relief breathing unit model machine evaluation meeting, the back-fire relief breathing unit of the present invention were held in Shanghai
This technical conference has obtained the accreditation of brainstrust.
The above embodiment of the present invention, only clearly demonstrates the citing that the present invention is done, but is not limited to this
Bright protection domain, the technical scheme of all equivalents falls within scope of the invention, and the scope of patent protection of the present invention should be by respectively
Item claim limits.
Claims (2)
1. a naval vessel back-fire relief breathing unit, including valve body (1), it is characterised in that: described valve body (1) is four-way
Valve, the right-hand member of cross valve is provided with outlet(discharge) flange dish；The left end of cross valve is connected with flame arrester arrangement (9), and flame arrester arrangement (9) is by hindering
Fire sandwich layer and outside back-fire relief housing composition, back-fire relief sandwich layer is drawer-type structure at back-fire relief housing；The left end of back-fire relief housing is arranged
Having the Flange joint of suction flange, suction flange and cargo tank interface, pad B(10 is passed through at the top of back-fire relief housing) with boring cover even
Connecing, the right-hand member of back-fire relief housing and the junction of cross valve are provided with relief valve (8)；The top of cross valve is provided with upper cover (11),
It is provided with pad C(12) between upper cover (11) and the top board of cross valve；The bottom of cross valve is provided with the fixed cover being vertically arranged,
The left part of fixed cover is provided with opening, is provided with getter assembly in fixed cover, and getter assembly is by vacuum valve seat (5) and vacuum valve disc
(4) composition, vacuum valve seat (5) is two sections of multidiameters, and the big end of two sections of multidiameters is at the subjacent of fixed cover and by pad A
(6) be connected with the step surface of fixed cover, two sections of multidiameters be provided centrally with through hole A, the small end of two sections of multidiameters is provided above
There is vacuum valve disc (4)；The top center of vacuum valve disc (4) is provided with valve opening；The bottom surface of fixed cover and the bottom surface of vacuum valve seat (5)
It is provided with air entry screen cover (7)；The top inner ring of fixed cover is provided with expiration assembly, expiration assembly by pressure valve seat (2) and
Pressure valve disc (3) form, pressure valve seat (2) be provided centrally with through hole B, the top of pressure valve seat (2) is provided with pressure valve disc
(3), the valve rod of pressure valve disc (3) is connected through through hole B with the valve opening at vacuum valve disc (4) top；In described flame arrester arrangement (9)
Back-fire relief sandwich layer be made up of two panels sandwich layer, every sandwich layer is entwined by two-layer stainless steel band, and one layer of stainless steel band is ripple
Shape guipure, another layer of stainless steel band is plate shaped guipure, and every sandwich layer is provided with the through hole of several trianglees, Mei Gesan
The through hole of dihedral all forms runner, and the runner of two panels sandwich layer is angled to be arranged；Described pressure valve seat (2), pressure valve disc (3),
Vacuum valve disc (4), vacuum valve seat (5) center all on same centrage and this centrage is positioned at a left side for cross valve centrage
Side；
Operation principle:
, expiration principle:
Cargo tank communicates with the lower end of pressure valve disc (3), and air communicates with the upper end of pressure valve disc (3), when in cargo tank, pressure is being controlled
Time in the range of pressing pressure, cargo tank pressure is less than the weight of pressure valve disc (3) to the active force of pressure valve disc (3), because of action of gravity,
Pressure valve is closed, and cargo tank disconnects with extraneous passage；
Oiling or ambient temperature raise, and in causing cargo tank, pressure raises rapidly, and when exceeding control malleation, cargo tank gas is to pressure
The active force of valve disc (3) is more than the own wt of pressure valve disc (3), and pressure valve opens vent the air overboard, and now vacuum valve closes
Closing, cargo tank pressure decreases, and when in cabin, pressure drops to control malleation, pressure valve disc (3) is closed by action of gravity, pressure valve
Closing, cargo tank disconnects with extraneous passage；
2), air-suction:
Cargo tank communicates with the upper end of vacuum valve disc (4), and air communicates with the lower end of vacuum valve disc (4), when in cargo tank, pressure is being controlled
Time in the range of pressing pressure, air is less than the weight of vacuum valve disc (4) to the active force of vacuum valve disc (4), because of action of gravity, vacuum
Valve cuts out；
Oil suction or temperature reduce, and in causing cargo tank, pressure reduces rapidly, when less than when controlling negative pressure, air is to vacuum valve disc (4)
Active force open more than the own wt of vacuum valve disc (4), vacuum valve, now pressure valve is closed, and cargo tank sucks air, cargo tank
Pressure raises；When in cabin, pressure rises to control negative pressure, vacuum valve disc (4) is closed by action of gravity, vacuum valve；
3), back-fire relief principle:
Back-fire relief function is realized by the back-fire relief sandwich layer in flame arrester arrangement (9)；Fray-out of flame principle is heat transfer effect and wall effect；Fire
When flame is by back-fire relief sandwich layer, being decomposed into numerous tiny flame by runner, wall effect is obvious, and heat transfer area is big, decreases burning
Bioactive molecule, makes flame temperature decline rapidly, and burning can not continue and extinguish, and back-fire relief effect is obvious.
2. the naval vessel processing technology of back-fire relief breathing unit, it is characterised in that: the described fire-retardant core in flame arrester arrangement (9)
Layer includes following operating procedure:
A), according to the ventilation requirement of pipeline, back-fire relief sandwich layer diameter is determined；
B), the making of back-fire relief sandwich layer:
1), the corrugated guipure of Mold Making is used；
2), the plate shaped guipure of Mold Making is used；
3), with a piece of plate shaped guipure compact winding, a piece of corrugated guipure being become a piece of sandwich layer, corrugated guipure is with plate shaped
Guipure must not loosen, and every core layer surface should be smooth, and Glabrous stings；Pore-size on every sandwich layer fire-retardant core layer, should be complete
Full uniformity, without blocking；
4), by two panels sandwich layer being combined into back-fire relief sandwich layer, the runner on a piece of sandwich layer is at an angle of with the runner on another blade sandwich layer
Arrange；
5), back-fire relief sandwich layer should ensure that each hole is unimpeded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892082.4A CN106195374B (en) | 2016-10-13 | 2016-10-13 | A kind of manufacture craft of naval vessel back-fire relief breathing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892082.4A CN106195374B (en) | 2016-10-13 | 2016-10-13 | A kind of manufacture craft of naval vessel back-fire relief breathing unit |
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| Publication Number | Publication Date |
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| CN106195374A true CN106195374A (en) | 2016-12-07 |
| CN106195374B CN106195374B (en) | 2018-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610892082.4A Active CN106195374B (en) | 2016-10-13 | 2016-10-13 | A kind of manufacture craft of naval vessel back-fire relief breathing unit |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998539A (en) * | 2017-11-30 | 2018-05-08 | 成都中寰流体控制设备股份有限公司 | A kind of fire retardant device and closed case back-fire relief method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107998539A (en) * | 2017-11-30 | 2018-05-08 | 成都中寰流体控制设备股份有限公司 | A kind of fire retardant device and closed case back-fire relief method |
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| Publication number | Publication date |
|---|---|
| CN106195374B (en) | 2018-09-18 |
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Denomination of invention: Manufacturing technology of a fire resistant breathing unit for ships Effective date of registration: 20210524 Granted publication date: 20180918 Pledgee: Jingjiang Branch of Bank of China Ltd. Pledgor: JANGSU KAI TONG MARINE VALVES Co.,Ltd. Registration number: Y2021980003916 |
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