CN202349259U

CN202349259U - Safe blow-down valve

Info

Publication number: CN202349259U
Application number: CN201120279621XU
Authority: CN
Inventors: 霍刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-03
Filing date: 2011-08-03
Publication date: 2012-07-25
Anticipated expiration: 2021-08-03

Abstract

The utility model relates to a safe blow-down valve. The structure of the safe blow-down valve comprises a hydrocone type start-stop device, a valve cover frame assembly, a valve rod, a valve body, an elastic stretching side sealing top pressure assembly, a side rotation sealing plate, a tapered bottom valve plug and a side water inlet hole emergency sealing plug, wherein the hydrocone type start-stop device is connected with a start-stop nut in the valve cover assembly; the upper part of the valve rod is in an upper and down sliding connection with the center of the valve cover frame assembly and is sealed in a sealing valve rod line cavity arranged below the bottom surface of a piston and above a gland packing; the lower part of the valve rod is arranged in the valve body; a side water inlet is arranged on the side surface of the valve body; a tapered bottom water outlet is arranged at the bottom of the valve body; the tapered bottom valve plug is connected with the lower end of the valve rod; the lower tapered part of the tapered bottom valve plug is coincided with the tapered bottom water outlet; the elastic stretching side sealing top pressure assembly is arranged between the tapered bottom valve plug and a fixing pressure part; the top ends of the two sides of the elastic stretching side sealing top pressure assembly are in top pressure smooth rolling contact with a back smooth back surface of the side rotation sealing plate; the side rotation sealing plate is rotatably connected with a suspension bracket; a front sealing surface of the side rotation sealing plate is in fastening contact with the sealing surface of the side water inlet; and a five-degree inclined angle is formed between a back smooth touch surface and the central axis of the valve rod; and the side water inlet emergency sealing plug is in inserting and extracting connection with an inserting and extracting cylinder head on the valve cover assembly.

Description

A kind of safety dumping valve

Technical field

The present invention relates to a kind of valve, the safety dumping valve that specifically a kind of submarine and oil platform ballast tank use.

Background technique

The claimant discloses a kind of cabin-bottom valve in 2005, application number is 200510045517.3, and the deficiency that this valve exists in practical application is:

1, valve rod stage casing and valve open mode lower valve rod epimere are exposed in the seawater of cabin; Because marine microorganism corrodes, numerous life is gathered in the biological absorption of shellfish, causes serious keying fault; Even can't open and close; Because bottom valve mouth and side valve mouth are closed sealing simultaneously, retain seawater in the valve pocket simultaneously, the shellfish biology in the seawater is adsorbed on valve rod and other valve inner piece and causes fault to open and close.

2; The mode of sliding up and down is opened or is closed in the valve plate employing guiding groove, and owing to all being the linkage structure that guide connects between valve rod, stretcher, valve plate, the guide plate, its linkage structure arbitrary node blocks or damages after carrying on the valve rod; The capital can't be closed valve; Same when the valve closing state need be opened, also, all can't make valve closing because of the arbitrary node of its guide linkage structure blocks or damages.

When 3, valve need be closed under opening operating mode; Fault such as, valve malfunctioning in driving mechanism switch indication and the driving joint disconnects, disconnection or people close when not in place for misoperation; Bottom valve lobe and side valve plate all can not be closed by automatic braking; Seawater gets into valve pocket through the bottom valve mouth and pours in the cabin through the side valve mouth, jeopardizes submarine or platform safety;

4, when the needs throttle down, when having foreign matter support jam fault not close between side valve plate and the side water intake, because valve rod, expanding tense machine and side valve plate linkage structure; Cause the valve rod can not be descending; The bottom valve lobe also can not be closed with mouth at the bottom of the valve, and seawater pours in the cabin, causes great maritime affairs hidden danger;

5, when the needs throttle down; As there being foreign matter to support the jam fault between bottom valve lobe and the end water outlet; Valve rod can not descending drive bottom valve lobe be closed the end during water outlet; The side valve plate is owing to can not descendingly close the side water intake with the interlock of expanding tense machine valve rod, and seawater gets into valve pocket through the bottom valve mouth and pours in the cabin through the side valve mouth, jeopardizes submarine or platform safety;

6, when being supported jam and can not close by foreign matter simultaneously between bottom valve lobe and the end water outlet, between side valve plate and the side water intake; End water outlet or side water inlet passageway do not have emergent blocking device blocking-up sea water encroachment and go into the cabin; Make ballast unbalance, the maritime affairs that oil platform topples are inevitable;

7, when at the bottom of the valve and bottom valve lobe when meeting the maritime affairs impact damage, the related valve rod torsional deformation that causes, because the linkage of structure, the seal failure of also related side valve plate and side water intake can't be blocked sea water encroachment and go into the cabin.

The mortality defective that above-mentioned existing technology scheme exists does not still have the technological scheme that solves at present.

Summary of the invention

Technical purpose task of the present invention is to overcome the mortality defective that existing technology exists, and a kind of possess following eight safety technique characteristics and function are provided, and is exclusively used in the cabin-bottom valve of submarine or offshore platform ballast tank ballast water body discharging.Eight safety technique characteristics and function are: 1, driving mechanism is unexpected breaks off when out of control, and valve still can be closed by automatic braking; 2, contingency makes when going to pot at the bottom of the valve valve still can close by automatic braking; When 3, side valve mouth fault can not be closed, mouth still can be closed at the bottom of the valve; When 4, the mouth fault can not be closed at the bottom of the valve, the side valve mouth can be closed automatically; When 5, artificial mistake is opened, can close by automatic braking; 6, at the bottom of the valve when mouth and side valve mouth simultaneous faults, can realize urgent shutoff; 7, no chain interlock fault; 8, marine organisms can not corrode valve rod and produce fault.

The object of the invention task realizes by following mode; A kind of safety dumping valve of the present invention; But its structure is to have hydrocone type opening/closing device, valve gap frame assembly, valve rod, valve body elastic telescopic side seal roof pressure assembly, sidespin shrouding, conical bottom valve plug, the emergent blocking of side water intake to constitute, and wherein, the keying nut epimere in respiration type opening/closing device and the valve gap assembly is inserted and is tightly connected admittedly; The top of valve rod slides up and down with valve gap frame assembly center and is connected; And be enclosed within bottom surface by the piston in the hydrocone type opening/closing device with in the airtight valve rod an actor's rendering of an operatic tune more than the stuffing box packing, and the bottom of valve rod is positioned among the valve body, and side of valve body is provided with the side water intake; The bottom is provided with the conical bottom water outlet; The lower end of valve rod is connected with the conical bottom valve plug, and conical bottom valve plug hypocone and conical bottom water outlet match, but the top of conical bottom valve plug is led to build through deciding on the valve rod and is equipped with elastic telescopic side seal roof pressure assembly; But the upper end of elastic telescopic side seal roof pressure assembly contacts with the solid pressure part on being arranged at valve rod; But the top, both sides of elastic telescopic side seal roof pressure assembly contacts with sliding rolling of backlight sliding back side roof pressure of sidespin shrouding, and the top of sidespin shrouding is rotationally connected through the suspending frame on hinge and the valve interior wall, and the positive face seal of sidespin shrouding fastens with the inner sealing surface of side water intake and contacts; The wiping face backlight of sidespin shrouding becomes 5 ° of angles with the valve rod central axis, the emergent blocking of side water intake plugs with plug column cap on the valve gap assembly and is connected.

The hydrocone type opening/closing device by under shed hold gas hood, in main body, piston form; The upper end body that under shed holds gas hood is processed with outer drive sub, the top inwall of under shed appearance gas hood with in main body body be connected, in be provided with piston in the piston cavity in the main body; Piston through seal ring with in the slipper seal of main body inwall be connected; In main body hypomere body be provided with connecting head, annular sealing surface is arranged in the connecting head, in main body top have the through hole that connects piston cavity and respiratory cavity; The through hole minimum point is with the volume of the respiratory cavity of bottom, plane and connect the volume of piston cavity between the through hole minimum point on the piston during greater than the piston lowest order.

But but elastic telescopic side seal roof pressure assembly is made up of body member elastic telescopic spare, company's part, roller or smooth contact; The inwall in the vertical hole on the body member is provided with the vertical lead key groove of deciding; Be provided with elastic telescopic spare between body member two ends and the company's part, connect part two tops and be equipped with roller or smooth contact.

The sidespin shrouding is provided with circular arc hanging head, suppending hole, the smooth face that touches, front sealing surface.

The side water intake blocking of meeting an urgent need, by tension disk, dish, rubber gasket, swing handle nut are formed admittedly surely, the cylindrical of tension disk is tapered; Inner body is provided with double-screw bolt, and double-screw bolt slides and passes surely that the mesopore of solid dish is connected with the swing handle nut, fixed solid coil with rubber gasket on identical contact of positioning table hole face; The endoporus of rubber gasket is taper, and its inner conical surface matches with the male cone (strobilus masculinus) of tension disk and contacts, and the outer wall of rubber gasket is the cylndrical surface; Its diameter is inserted the side water intake for slidably contacting; The outer bottom of tension disk is provided with the socket joint hole, and the socket joint hole is built-in with annular collar, gapped chamber between tension disk and the fixed solid dish.

Piston in the hydrocone type opening/closing device through seal ring with in the slipper seal of main body inwall; Keying nut top in the valve gap assembly and hydrocone type opening/closing device are inserted solid and are sealed through seal ring; Keying nut, gland, support, spinning cover, Gland are provided with Sealing each other successively; Crush seal filler and make it and valve stem seal between Gland and the valve gap annular material letter; Be arranged between set screw nut and support, the closure nut on the outer section of guide-localization bolt and be provided with sealing gasket, thereby make piston bottom surface in the hydrocone type opening/closing device with down to airtight valve rod an actor's rendering of an operatic tune of whole formation more than the stuffing box packing.

Valve body bottom cylindrical is provided with flange.

The solid pressure part is valve stem body protrusion pylon or pylon spring assembly.

Excellent effect of the present invention is, the one, stopped the hidden danger of externally caused failure jam.The outside valve rod of valve pocket places in airtight valve rod an actor's rendering of an operatic tune of respiration type opening/closing device and valve gap assembly formation, and is isolated with the ballast seawater in the body of cabin, eradicated the numerous fault of coining into of marine organisms absorption; Because in the valve closing process; When end water outlet is not closed as yet; But the roller at elastic telescopic side seal roof pressure assembly two ends, descending contact earlier is roof pressure sidespin shrouding then, and overcomes from the outer ballast tank water body of valve the pressure of sidespin shrouding is at first closed the side water intake; Valve rod continued in the descending time difference of closing end water outlet afterwards; Water body in the valve pocket the end of from drain opening discharge fully, lost the seashells biology in the valve pocket in the live away from home condition of numerous life of valve rod and other parts thereby make, eradicated potential faults.

The 2nd, eradicated traditional internal structure single place node failure and the hidden danger of chain total failure.Promoted by linkage structure control valve plate and often open, closed naturally under self gravitation all the time for valve plate does not receive interlock control suspension separately, when seawater pours in down a chimney when getting into valve pocket from the bottom valve mouth, because the one-way of valve plate, hydraulic pressure can compress sealing more with valve plate.

The 3rd, round Realization still possess reliable Security under the fault case: 1, driving mechanisms control lost efficacy, the people for misoperation, unexpected maritime affairs destructive valve at the bottom of the time still possess reliable Security.When (1) valve need be closed under opening operating mode, driving mechanism was malfunctioning as taking place, valve and driving joint take place to disconnect breaks off in the time of can't closing, and the sidespin shrouding is closed under self hangs down gravity and at enhanced leaktightness under the water body pressure of end mouth entering valve pocket; (2) valve should not be opened and artificial mistake when opening, and the sidespin shrouding self is hanging down gravity and get under the water body pressure of valve pocket automatic braking from end mouth and close the side water intake; (3) when valve in off position down; Meet the maritime affairs accident to valve at the bottom of and when the mouth bump damages and makes the valve rod torsional deformation at the bottom of the valve; Because scalable side seal roof pressure assembly is a flexible roof pressure sidespin shrouding under the effect of elastic component; Can not make it lose sealing by chain pulling sidespin shrouding, simultaneously the sidespin shrouding do not receive interlock control and independent suspension from hanging down sealing, and get into enhanced leaktightness under the valve pocket water body pressure anti-the filling; Thereby anti-filling of blocking-up seawater pours in the cabin, avoids the serious consequence that submarine or platform ballast are unbalance and then topple; When 2, side water inlet valve mouth foreign matter support jam can not be closed, the bottom valve mouth still can be closed.Between throttle down chance sidespin shrouding and side water intake, there is foreign matter to support jam; When the side water intake can not be closed; Scalable side seal roof pressure general name is regained under the effect of anti-roof pressure power, and valve rod still can continue the tapered bottom valve plug of descending drive and close end water outlet, and the cabin is gone in the blocking-up sea water encroachment; When 3, end water outlet had foreign matter support jam not close, the side water intake still can be closed.When having foreign matter to support jam between tapered bottom valve plug and the end water outlet; The sidespin shrouding still can saggingly naturally make end water outlet close; The top of scalable side seal roof pressure assembly simultaneously, descending earlier contact with the sidespin shrouding to compress close the side water intake, block sea water encroachment and go into the cabin; 4, block to close the time when unexpected simultaneously support the between tapered bottom valve plug and the end water outlet, between sidespin shrouding and the side water intake by foreign matter; Realized the urgent shutoff of side valve mouth through the emergent blocking of side water intake; Thoroughly the cabin is gone in the blocking-up sea water encroachment, avoids the serious consequence that submarine or platform are unbalance and then topple.

Description of drawings

Fig. 1 is the main TV structure schematic representation of safety dumping valve;

Fig. 2 is a kind of mode of execution structural representation of safety dumping valve;

Fig. 3 is the structural representation of hydrocone type opening/closing device;

Fig. 4 is that the A-A of hydrocone type opening/closing device is to the cross-sectional configuration schematic representation;

But Fig. 5 is the structural representation of elastic telescopic side seal roof pressure assembly;

But Fig. 6 is the plan structure schematic representation of elastic telescopic side seal roof pressure assembly;

Fig. 7 is a sidespin closing plate structure schematic representation;

Fig. 8 is a kind of mode of execution structural representation of sidespin shrouding;

Fig. 9 is the emergent blocking structural representation of side water intake;

Figure 10 be airtight valve rod an actor's rendering of an operatic tune partly cut open structural representation;

Figure 11 is that the D of airtight valve rod an actor's rendering of an operatic tune is to the partial structurtes enlarged diagram;

Description of reference numerals:

But respiration type opening/closing device 1, valve gap frame assembly 2, valve catch up with 3, valve body 4 elastic telescopic side seal roof pressure assemblies 5, sidespin shrouding 6, tapered bottom valve plug 7, open and close nut 8, plug contact 9, side water intake emergent blocking 10, solid pressure part 11, suspending frame 12, hinge 13, side water intake 14, decide lead key 15, conical bottom water outlet 16, outer drive sub 17, under shed hold gas hood 18, in main body 19, piston 20, annular sealing surface 21, connecting head 22, connect empty 23, respiratory cavity 24, piston cavity 25, seal ring 26, body member 27, elastic telescopic spare 28, connect part 29, roller or smooth contact 30, vertical hole 31, vertically decide lead key groove 32, circular arc hanging head 33, suppending hole 34, wiping face backlight 35, front sealing surface 36, tension disk 37, coil 38 admittedly surely, rubber gasket 39, swing handle nut 40, double-screw bolt 41, socket joint hole 42, annular collar 43, spatia 44, gland 45, support 46, spinning cover 47, Gland 48, valve gap are annular expects letter 49; Sealing seal ring 50,

Sealing

51,52,53,54, stuffing box packing 55, sealing gasket 56, set screw nut 57, sealing gasket 58, closure nut 59, guide-localization bolt 60, flange 61, airtight valve rod an actor's rendering of an operatic tune 62.

Embodiment

With reference to Figure of description a kind of safety dumping valve of the present invention is done following the detailed description.

Like Fig. 1, shown in 2; A kind of safety dumping valve of the present invention; But its structure is made up of hydrocone type opening/closing device 1, valve gap frame assembly 2, valve rod 3, valve body 4 elastic telescopic side seal roof pressure assemblies 5, sidespin shrouding 6, conical bottom valve plug 7, the emergent blocking 10 of side water intake, and wherein, respiration type opening/closing device 1 is inserted with keying nut 8 epimeres in the valve gap assembly 2 and is tightly connected admittedly; The top of valve rod 3 slides up and down with valve gap frame assembly 2 centers and is connected; And be enclosed within bottom surface by the piston in the hydrocone type opening/closing device 1 24 with in stuffing box packing airtight valve rod an actor's rendering of an operatic tune 62 more than 55, and the bottom of valve rod 3 is positioned among the valve body 4, and the side of valve body 4 is provided with side water intake 14; The bottom is provided with conical bottom water outlet 16; The lower end of valve rod 3 is connected with conical bottom valve plug 7, and conical bottom valve plug 7 hypocones and conical bottom water outlet 16 match, but the top of conical bottom valve plug 7 is provided with elastic telescopic side seal roof pressure assembly 5 through the lead key 15 of deciding on the valve rod 3; But the upper end of elastic telescopic side seal roof pressure assembly 5 contacts with the solid pressure part 11 on being arranged at valve rod 3; But the top, both sides of elastic telescopic side seal roof pressure assembly 5 contacts with sliding rolling of backlight sliding back side roof pressure of sidespin shrouding 6, and the top of sidespin shrouding 6 is rotationally connected through the suspending frame 12 on hinge 13 and valve body 14 inwalls, and the positive face seal of sidespin shrouding 6 fastens with the inner sealing surface of side water intake 14 and contacts; The wiping face backlight of sidespin shrouding 6 becomes 5 degree angles with valve rod 3 central axis, the emergent blocking 10 of side water intake plugs with plug column cap 9 on the valve gap assembly 2 and is connected.

Like accompanying drawing 3, shown in Figure 4; The hydrocone type opening/closing device by under shed hold gas hood 18, in main body 19, piston 20 form; The upper end body that under shed holds gas hood 18 is processed with outer drive sub 17, the top inwall of under shed appearance gas hood 18 with in main body 19 bodies be connected, in be provided with piston 20 in the piston cavity 25 in the main body 19; Piston 20 through seal ring 26 with in main body 19 inwall slipper seals be connected; In main body 19 hypomere bodies be provided with connecting head 22, annular sealing surface 21 is arranged in the connecting head 22, in main body 19 tops have the through hole 23 that connects piston cavity 25 and respiratory cavity 24; Through hole 23 minimum points are with the volume of the respiratory cavity 24 of bottom, plane and connect the volume of piston cavity 25 between through hole 23 minimum points on the piston 20 during greater than piston 20 lowest orders.

Like accompanying drawing 5, shown in Figure 6; But elastic telescopic side seal roof pressure assembly is made up of body member 27, elastic telescopic spare 28, company's part 29, roller or smooth contact 30; The inwall in the vertical hole 31 on the body member 27 is provided with the vertical lead key groove 32 of deciding; Be provided with elastic telescopic spare 28 between body member 27 two ends and the company's part 29, connect 29 liang of tops of part and be equipped with roller or smooth contact 30.

Like Fig. 7, shown in Figure 8, the sidespin shrouding which is provided with arc-shaped transition contact 33 suppending holes 34, the smooth face 35 that touches, front sealing surface 36.

As shown in Figure 9, the side water intake blocking of meeting an urgent need, by tension disk 37, coil 38 admittedly surely, rubber gasket 39, swing handle nut 40 form; The cylindrical of tension disk 37 is tapered, and inner body is provided with double-screw bolt 41, and double-screw bolt 41 slides to pass and coils 38 mesopore surely admittedly and be connected with swing handle nut 40; Fixed coil admittedly 38 with rubber gasket 39 on identical contact of positioning table hole face; The endoporus of rubber gasket 39 is taper, and its endoporus conical surface matches with the outer conical surface of tension disk 37 and contacts, and rubber gasket 39 outer walls are the cylndrical surface; Its diameter is inserted side water intake 14 for slidably contacting; The outer bottom of tension disk 37 is provided with socket joint hole 42, and socket joint hole 42 is built-in with annular collar 43, tension disk 37 and fixed coil 38 admittedly between gapped chamber 44.

Like Figure 10, shown in Figure 11; The formation of airtight valve rod an actor's rendering of an operatic tune be in the hydrocone type opening/closing device 1 piston 20 through seal ring 26 with in main body 19 inwall slipper seals; Keying nut 8 tops in the valve gap assembly and hydrocone type opening/closing device 1 are inserted solid and are sealed through seal ring 50; Keying nut 8, gland 45, support 46, spinning cover 47, Gland 48 are provided with

Sealing

51,52,53,54 each other successively; Crush seal filler 55 and make it and valve rod 3 seals between Gland 48 and the valve gap annular material letter 49; The set screw nut 57 and support 46,59 of the closure nuts that are arranged on the outer section of guide-localization bolt 60 are provided with sealing gasket 56,58, thereby make piston 24 bottom surfaces in the hydrocone type opening/closing device 1 with down to stuffing box packing airtight valve rod an actor's rendering of an operatic tune 62 of integral body formation 55 or more.

But the working principle of elastic telescopic side seal roof pressure assembly, safety dumping valve is following:

Keying is to slide up and down realization through the valve rod that at first turn hydrocone type of drive unit opening/closing device that is connected with valve and then turn keying nut drive in the airtight valve-rod cavity.

During Open valve, valve rod is up, promotes piston stroking upward thereby piston base chamber internal air pressure is increased, and the air in the piston head piston cavity gets into respiratory cavity from through hole; During throttle down, valve rod is descending, produces negative pressure in the piston base piston cavity; Descent of piston is because the respiratory cavity volume is greater than the volume of piston head piston cavity, under the effect that air builds the pressure in respiratory cavity; Water body in submarine or the oil platform ballast tank can not get into respiratory cavity, fully in the valve opening and closing process; Water line is being lower than below the intercommunicating pore minimum point back and forth all the time in the respiratory cavity, and seawater can not get into piston cavity, and the water of condensation that air produced of respiratory cavity in through hole gets into piston cavity arranged; Also can not be corroded valve rod, and in valve opening, during piston stroking upward to through hole low spot, the water of condensation in the chamber discharged through through hole by piston blocking-up.Simultaneously; Valve in closing closed procedure, when end water outlet is not closed as yet, but the roller at elastic telescopic side seal roof pressure assembly two ends; The wiping face backlight of first descending contact sidespin shrouding; Then roof pressure sidespin shrouding, and overcome from the outer ballast tank water body of valve the pressure of sidespin shrouding is at first closed the side water intake, valve rod continued in the descending time difference of closing end water outlet afterwards; Water body in the valve pocket the end of from drain opening discharge fully, lost biologies such as seashells in the valve pocket in the live away from home condition of numerous life of valve rod and other parts thereby make.

During Open valve; Valve rod is up, but the roller on elastic telescopic side seal roof pressure assembly two tops along moving on the sidespin shrouding smooth backside that tilts, it is applied to pressure on the sidespin shrouding along with discharging gradually; When roller is up to disengaging sidespin shrouding; Open under the pressure of sidespin shrouding water body outside valve body, this moment the bottom the also up end water outlet of opening under the drive of valve rod of tapered bottom valve plug, the ballast water body is realized discharging in platform or the submarine ballast tank.

During throttle down; Valve rod is descending; Under valve rod drives; But the wiping face backlight of descending contact earlier of the roller at elastic telescopic side seal roof pressure assembly two ends and roof pressure sidespin shrouding; Overcome from the outer ballast tank water body of valve the pressure of sidespin shrouding closed the side water intake, but and along with the descending reinforced seal of the roller at elastic telescopic side seal roof pressure assembly two ends, but valve rod has also realized driving the descending end water outlet of closing of tapered bottom valve plug when driving the descending reinforcement side of the roller water intake sealing at elastic telescopic side seal roof pressure assembly two ends.

In the throttle down process; When having foreign matter to support jam between sidespin shrouding and the side water intake; But elastic telescopic side seal roof pressure assembly shrinks under the effect of the reverse top of sidespin shrouding power; Roller still can continue along wiping face backlight descending, and therefore, valve rod continues to exercise tapered bottom valve plug down as usual and closes end water outlet; Thoroughly the cabin is gone in the blocking-up sea water encroachment, avoids the serious consequence that submarine or platform are unbalance and then topple.

In the throttle down process when between tapered bottom valve plug conical seal (contact) face and the end water outlet sealing surface foreign matter support card group being arranged; But because the roller at elastic telescopic side seal roof pressure assembly two ends; Descending contact sidespin shrouding wiping face backlight earlier, and overcome from the outer ballast tank water body of valve the pressure of sidespin shrouding is closed the side water intake.Thoroughly the cabin is gone in the blocking-up sea water encroachment, avoids the serious consequence that submarine or platform are unbalance and then topple.

Unexpected simultaneously the support by foreign matter blocked can not close the time between the conical seal (contact) face and end water outlet conical seal (contact) face of throttle down process like tapered bottom valve plug, between sidespin shrouding sealing surface and the side water intake sealing surface; Can rapidly the emergent blocking of side water intake be pulled up from the plug contact; Insert the side water intake from the outside and rotate the swing handle nut, make tension disk axially get into spatia, form relative conical surface extruding; Force rubber gasket outwards to dilate; Expanding is fixed in the side water intake, has realized the urgent shutoff of side water intake, thoroughly blocks sea water encroachment and goes into the cabin.

Embodiment 2; Its working principle is identical with embodiment 1; Difference is that embodiment's 1 sidespin shrouding front sealing surface is parallel with wiping face backlight; 5 ° of angles of its wiping face backlight and valve rod central axis; Become 5 ° of angles to realize with the valve rod central axis through the inclination of side water intake sealing surface, but the solid pressure part of elastic telescopic side seal roof pressure assembly upper end is a valve stem body protrusion pylon, embodiment 2 side water intake sealing surface is parallel with the valve rod central axis; Sidespin shrouding wiping face backlight and 5 ° of angles of valve rod central axis are that the wiping face backlight through the sidespin shrouding becomes 5 ° of angles to realize with the front sealing surface, but the solid pressure part of its elastic telescopic side seal roof pressure assembly upper end is the pylon spring assembly.

A kind of safety dumping valve of the present invention has compared with prior art fundamentally overcome the critical defect of existing technology; Himself structure and external corrosion trouble hidden danger have been eradicated; Breakthrough realization still possess reliable closing function under the fault case; Be fail safe, have extensively and important techniques meaning and great economic benefit at submarine and offshore platform field.

Except that the described technical characteristics of specification, be the known technology of those skilled in the art.

Claims

1. safety dumping valve; It is characterized in that comprising hydrocone type opening/closing device (1), valve gap frame assembly (2), valve rod (3), valve body (4) but elastic telescopic side seal roof pressure assembly (5), sidespin shrouding (6), conical bottom valve plug (7), the emergent blocking (10) of side water intake constitute; Wherein, Respiration type opening/closing device (1) is inserted with keying nut (8) epimere in the valve gap assembly (2) and is tightly connected admittedly; The top of valve rod (3) slides up and down with valve gap frame assembly (2) center and is connected; And be enclosed within bottom surface by the piston (24) in the hydrocone type opening/closing device (1) with in the airtight valve rod an actor's rendering of an operatic tune (62) more than the stuffing box packing (55), and the bottom of valve rod (3) is positioned among the valve body (4), and valve body (4) both sides are provided with side water intake (14); The bottom is provided with conical bottom water outlet (16); The lower end of valve rod (3) is connected with conical bottom valve plug (7), and conical bottom valve plug (7) hypocone and conical bottom water outlet (16) match, the top of conical bottom valve plug (7) through on the valve rod (3) decide to lead build (15) but be provided with elastic telescopic side seal roof pressure assembly (5); But the upper end of elastic telescopic side seal roof pressure assembly (5) contacts with solid pressure part (11) on being arranged at valve rod (3); But the top, both sides of elastic telescopic side seal roof pressure assembly (5) contacts with sliding rolling of backlight sliding back side roof pressure of sidespin shrouding (6), and the top of sidespin shrouding (6) is rotationally connected through the suspending frame (12) on hinge (13) and valve body (4) inwall, and the positive face seal of sidespin shrouding (6) fastens with the inner sealing surface of side water intake (14) and contacts; The wiping face backlight of sidespin shrouding (6) becomes 5 degree angles with valve rod (3) central axis, meet an urgent need plug column cap (9) on blocking (10) and the valve gap assembly (2) of side water intake plugs and is connected;

Piston (20) in the hydrocone type opening/closing device (1) through seal ring (26) with in main body (19) inwall slipper seal; Keying nut (8) top in the valve gap assembly and hydrocone type opening/closing device (1) are inserted solid and are sealed through seal ring (50); Keying nut (8), gland (45), support (46), spinning cover (47), Gland (48) are provided with Sealing (51), (52), (53), (54) each other successively; Crush seal filler (55) and make it and valve rod (3) seals between Gland (48) and the valve gap annular material letter (49); Be arranged between set screw nut (57) and support (46), the closure nut (59) on the outer section of guide-localization bolt (60) and be provided with sealing gasket (56), (58), thereby make piston (24) bottom surface in the hydrocone type opening/closing device (1) with down to integral body formation airtight valve rod an actor's rendering of an operatic tune (62) stuffing box packing (55) more than.

2. a kind of safety dumping valve according to claim 1; It is characterized in that; The hydrocone type opening/closing device by under shed hold gas hood (18), in main body (19), piston (20) form; The upper end body that under shed holds gas hood (18) is processed with outer drive sub (17), under shed appearance gas hood (18) top inwall with in main body (19) body be connected, in be provided with piston (20) in the piston cavity (25) in the main body (19); Piston (20) through seal ring (26) with in main body (19) inwall slipper seal be connected; In main body (19) hypomere body be provided with connecting head (22), annular sealing surface (21) is arranged in the connecting head (22), in main body (19) top have the through hole (23) that connects piston cavity (25) and respiratory cavity (24); Through hole (23) minimum point is with the volume of the respiratory cavity (24) of bottom, and piston (20) is gone up the volume of piston cavity (25) between plane and perforation through hole (23) minimum point during greater than piston (20) lowest order.

3. a kind of safety dumping valve according to claim 1; But it is characterized in that elastic telescopic side seal roof pressure assembly by body member (27), elastic telescopic spare (28), connect part (29), roller or smooth contact (30) and form; The inwall in the vertical hole (31) on the body member (27) is provided with the vertical lead key groove (32) of deciding; Be provided with elastic telescopic spare (28) between body member (27) two ends and the company's part (29); Connect part (29) two tops and be equipped with roller or smooth contact (30), but the elastic telescopic spare (28) in the elastic telescopic side seal roof pressure assembly is spring or latch plate.

4. a kind of safety dumping valve according to claim 1 is characterized in that the sidespin shrouding is provided with circular arc hanging head (33) suppending hole (34), the smooth face (35) that touches, front sealing surface (36).

5. a kind of safety dumping valve according to claim 1 is characterized in that the side water intake blocking of meeting an urgent need, and being has tension disk (37), fixed solid dish (38), rubber gasket (39), swing handle nut (40) to form; The cylindrical of tension disk (37) is tapered, and inner body is provided with double-screw bolt (41), and double-screw bolt (41) slip is passed the mesopore that coils (38) surely admittedly and is connected with swing handle nut (40); Fixed solid dish (38) contacts with the positioning table hole face on the rubber gasket (39) is identical; The endoporus of rubber gasket (39) is taper, and its inner conical surface matches with the male cone (strobilus masculinus) of tension disk (37) and contacts, and the outer wall of rubber gasket (39) is the cylndrical surface; Its diameter is inserted side water intake (14) for slidably contacting; The outer bottom of tension disk (37) is provided with socket joint hole (42), and socket joint hole (42) are built-in with annular collar (43), gapped chamber (44) between tension disk (37) and the fixed solid dish (38).

6. a kind of safety dumping valve according to claim 1 is characterized in that, valve body (4) bottom cylindrical is provided with flange (61).

7. a kind of safety dumping valve according to claim 1 is characterized in that solid pressure part (11) is valve stem body protrusion pylon or pylon spring assembly.