CN1982767A

CN1982767A - Cabin-bottom valve

Info

Publication number: CN1982767A
Application number: CN 200510045517
Authority: CN
Inventors: 霍刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-12
Filing date: 2005-12-12
Publication date: 2007-06-20
Anticipated expiration: 2025-12-12
Also published as: CN100443792C

Abstract

A bilge valve comprises a valve body, a valve deck, a valve stem, a support, a valve stem nut, a valve clack, an expander, a clamp nut, a valve plate, a seal ring, a guide runner and a guide key. The valve deck is disposed on top of the valve body via a gasket seal and on the valve deck is disposed a valve stem support. The upper end of the valve stem is disposed in the support through the valve stem nut, the bearing gland and the bearing. A longitudinal keyslot fits opened in the upper part of the valve stem fits snugly with the sliding key disposed in the support. The middle part of the valve stem passes through the valve deck, the middle and lower section passes through the expander, the bottom extends to the above of the water outlet at the bottom of the valve body cavity and they are connected with the valve clack through a spilt ring and the valve clack cover.

Description

A kind of cabin-bottom valve

Technical field

The present invention relates to the portable oil platform special valve in a kind of sea, specifically a kind of cabin-bottom valve that can play double-sealing, anti-jam, anti-leak on the platform ballast tank base plate and can realize the full discharging of ballast water body that is installed in.

Background technique

Cabin-bottom valve plays crucial effects to the Security of platform, and present cabin-bottom valve does not still have the technical requirements that can satisfy double-sealing, anti-jam, anti-leak simultaneously and can realize the full discharging of ballast water body, and its technology that adopts mostly is following three kinds:

(1) right-angle type stop valve: the right-angle type stop valve promptly is installed on Ceiling.Morpheme structure by the right-angle type stop valve is determined, there is following defective: 1, late gate horizontal seal face and the vertical potential difference in plane on the Ceiling be installed (is example with AS, BS type 1.6Mpa DN100-DN200 right-angle type stop valve) between the 180mm to 300mm, even valve is under the state of standard-sized sheet position, the water body that still accumulates 180-300mm in the cabin can not be thrown into out of my cabin.In platform when navigation,, water body fluctuates with the swing of platform in the cabin in, brings serious threat for the stability and the navigation safety of platform, also caused overhaul in the useless and cabin of navigating power wave difficult.2, because the right-angle type stop valve adopts the veneer once sealing, when in case deposition foreign matter or unexpected jam seal drag occurs and makes seal failure on the valve body sealing surface, can't realize secondary seal, when causing ballast, water body leaks in the cabin, and ballast power is unbalance, towage or when berthing, in the sea water encroachment cabin, jeopardize platform safety.

(2) the right-angle type stop valve is equipped with one way stop peturn valve: promptly be connected an one way stop peturn valve on right-angle type stop valve transverse port, in other words under right-angle type stop valve seal failure state, realize secondary seal by safety check, guarantee to press when cutting and do not leak, seawater does not pour in down a chimney in the cabin when navigating by water and berthing.But because the structure of one way stop peturn valve and the characteristic that low-pressure state is difficult to seal make hidden danger more outstanding on the contrary.Be embodied in: the sealed type of 1, relying on oneself: valve plate is swung with the underway swing of platform, and under the effect of gravity peace platform shaking force, sealing surface of valve plate separates with sealing surface of seat, seal failure at valve plate; When press cutting, separate seal failure with sealing surface of seat under the pressure of sealing surface of valve plate ballast water body in the cabin and the effect of platform shaking force.2, external force sealed type (as spring): be added in the one-way sealing external force on the safety check valve plate, water body is to the pressure of valve plate in the time of must expiring greater than water in the ballast tank, and safety check is in closed condition in the time of could guaranteeing ballast, guarantees ballast safety.But this state is blocked the discharge of ballast water body in the cabin fully, and full cabin water body can not be discharged, and its potential safety hazard is more serious.

(3) non-return cut-off type cabin-bottom valve: this technology is above-mentioned (two) right-angle type stop valve to be connected by split with one way stop peturn valve change integral type into.Its defective is identical when being equipped with right-angle type stop valve and one way stop peturn valve: when 1, navigating by water and berthing, valve plate is swung with the swing of platform, when pendulum angle seals angle greater than valve plate, sealing surface of valve plate separates with the seal ring sealing surface, during ballast, during greater than the self-styled power of valve plate, sealing surface of valve plate separates seal failure with the seal ring sealing surface to water body to valve plate pressure in the ballast tank.2, strengthen valve plate gravity, when making gravity selfsealings power greater than the ballast tank fills with water water body to the pressure of valve plate with enough overcome the sealing surface that shaking force causes and separate, safety check is in closed condition when guaranteeing ballast, but this state is blocked the discharge of ballast water body in the cabin again fully, and its potential safety hazard is dangerous more.

Above prior art scheme all can not satisfy the platform safety ballast, arrange the technical requirements of carrying, berthing, navigating by water, and exists and jeopardizes the platform safety major hidden danger, so need a kind of brand-new valve of design.

Summary of the invention

Technical assignment of the present invention provides a kind of cabin-bottom valve that is installed on the platform ballast tank base plate, the leakage that the ballast water body of each ballast tank is injected in the double-sealing blocking-up in the time of can satisfying ballast simultaneously, guarantee the equilibrium of ballast power, the platform ballast finishes, thoroughly the ballast water body in the ballast tank is emitted, eliminate ballast fully, towage and when berthing double-sealing blocking-up seawater enter technical requirements in the cabin, guarantee the platform ballast, unload, berth, the cabin-bottom valve of towage safety.

The technical solution adopted for the present invention to solve the technical problems is: a kind of cabin-bottom valve, structure comprises valve body, valve gap, valve rod, support, Stem Mut, flap, expanding tense machine, tightening nut, valve plate, seal ring, guide plate, feather key, valve gap is arranged on the valve body upper end by gasket seal, be provided with the valve rod support above the valve gap, Stem Mut is passed through in the valve rod upper end, bearing gland, bearing is arranged in the support, valve rod top has vertical keyway and is slidingly matched with the slide key that is arranged in the support, valve gap is passed at the valve rod middle part, and successively by the gland nut, Gland, stuffing box packing, filler pressure pad and valve bonnet seal link together, hypomere passes expanding tense machine in the valve rod, and be attached thereto by expanding tense machine two tightening nuts up and down, the valve rod lower end extends to valve cavity bottom discharge mouth top, and by splitting annulus, the flap lid links together with flap, the expanding tense machine and the both sides valve plate that are connected hypomere in the valve rod form cunning by the guide assembly parts, be rotationally connected, sealing surface of valve plate closely is fastened on the inner sealing surface of both sides valve inleting water mouth sealing ring, and change by guide assembly parts and the guide plate that is arranged on the valve body valve plate upper end, be slidingly connected.

The inferior pyramidal sealing surface of flap lower end closely is fastened on the inferior pyramidal sealing surface of floss hole upper end at the bottom of the valve body.

On valve rod, be respectively equipped with and Stem Mut, the corresponding screw thread of tightening nut, the vertical keyway corresponding, the circular groove corresponding with divided ring with feather key.

The inferior pyramidal sealing surface tapering in its outside, lower end was 10 °-60 ° after flap tightened together by cone-shaped sealing ring and pressing plate, and consistent with floss hole sealing surface tapering at the bottom of the valve body.

Seal ring sealing surface tapering is set in 10 °-30 °, its longitudinal midline of elongated hole that connects with the tight device that expands on the valve plate is parallel with sealing surface of valve plate, the seal ring sealing surface is designed to when vertical with the valve body bottom surface, and the elongated hole center line on the valve plate and the angle of sealing surface are 5 °-15 °.

The pin-and-hole that connects valve plate on the expanding tense machine is positive circular hole.

The bottom plane of body cavity is lower than the last plane of its outer flange, valve by body at the bottom of spill flange on flange and the Ceiling be mounted on the cabin base plate.

A kind of cabin-bottom valve of the present invention is compared with prior art, it is good to have usage safety performance, double-sealing, anti-jam, anti-leak, characteristics such as easy to use, the leakage of the ballast water body of each ballast tank is injected in blocking-up in the time of can satisfying ballast simultaneously, guarantee the equilibrium of ballast power, the platform ballast finishes, thoroughly the ballast water body in the ballast tank is emitted, eliminate ballast fully, the towage and the time blocking-up seawater that berths enter the technical requirements in the cabin, guarantee that the platform ballast berths, the safety of towage, realized that a valve is multi-stage sealed, fundamentally solved the defective of the insurmountable full discharging double-sealing of prior art.

Description of drawings

Accompanying drawing 1 is a kind of main TV structure sectional view of cabin-bottom valve;

Accompanying drawing 2 is a kind of partial enlarged drawing of cabin-bottom valve.

Embodiment

Explain with reference to Figure of description 1 with below 2 pairs of a kind of cabin-bottom valves works of the present invention of accompanying drawing.

A kind of cabin-bottom valve of the present invention, structure comprises valve body 1, valve gap 14, valve rod 5, support 16, Stem Mut 21, flap 2, expanding tense machine 7, tightening nut 6, valve plate 8, seal ring 10, guide plate 11, feather key 23, valve gap 14 is arranged on valve body 1 upper end by gasket seal 13, be provided with valve rod support 16 above the valve gap 14, valve rod 5 upper ends are by Stem Mut 21, bearing gland 22, bearing 26 is arranged in the support 16, valve rod 5 tops have vertical keyway and are slidingly matched with the slide key that is arranged in the support 16, valve gap 14 is passed at valve rod 5 middle parts, and successively by gland nut 20, Gland 19, stuffing box packing 18, filler pressure pad 7 is tightly connected together with valve gap 14, hypomere passes expanding tense machine 7 in the valve rod 5, and be attached thereto by two tightening nuts 6 of expanding tense machine about in the of 7, valve rod 5 lower ends extend to valve body 1 cavity bottom drain opening top, and by splitting annulus 3, flap lid 4 links together with flap 2, the expanding tense machine 7 that is connected hypomere in the valve rod 5 forms sliding with both sides valve plate 8 by guide assembly parts 9, be rotationally connected, valve plate 8 sealing surfaces closely are fastened on the both sides valve inleting water mouth sealing ring 10 inner sealing surfaces, and change by guide assembly parts 6 and the guide plate 11 that is arranged on the valve body 1 valve plate 8 upper ends, be slidingly connected.

The inferior pyramidal sealing surface of flap 2 lower ends closely is fastened on the inferior pyramidal sealing surface of floss hole upper end, 1 end of valve body.

On valve rod 5, be respectively equipped with and Stem Mut 21, tightening nut 6 corresponding screw threads the vertical keyway corresponding, the circular groove corresponding with divided ring 3 with feather key 23.

The inferior pyramidal sealing surface tapering in its outside, lower end was 10 °-60 ° after flap 2 tightened together by cone-shaped sealing ring 27 and pressing plate 28, and consistent with 1 end of valve body floss hole sealing surface tapering.

Seal ring 10 sealing surface taperings are set in 10 °-30 °, its longitudinal midline of elongated hole that connects with the tight device 7 that expands on the valve plate 8 is parallel with sealing surface of valve plate, seal ring 10 sealing surfaces are designed to when vertical with valve body 1 bottom surface, and the elongated hole center line on the valve plate 8 and the angle of sealing surface are 5 °-15 °.

The pin-and-hole that connects valve plate 8 on the expanding tense machine 7 is positive circular hole.

The bottom plane of valve body 1 inner chamber is lower than the last plane of its outer flange, valve by body at the bottom of spill flange on flange and the Ceiling be mounted on the cabin base plate.

In addition, in the middle of practical application, valve plate 8 sealing surfaces can be the body machining type, also can be body and Sealing assembly type.

Flap 2 also can be processed into the inferior pyramidal sealing surface in its outside, lower end by flap 2 bodies except the back that tightens together by cone-shaped sealing ring 27 and pressing plate 28 forms the inferior pyramidal sealing surface in its outside, lower end.

The floss hole sealing surface of valve body 1 bottom can be the body machining type, also can be inserted valve seat seal ring formula, and its sealing surface tapering is set between 10 °-60 °, consistent with flap sealing surface tapering, when using inserted valve seat seal ring formula, on the seal ring bottom is higher than at the bottom of the valve body plane and at the bottom of seal ring bottom and the valve body interplanar be provided with and deposit the foreign matter guiding gutter.

Stem structure can be the entire body formula, also can be split type.

Expanding tense machine 7 adopts the high tolerance scope with cooperating of valve rod, leaves certain interval.

Valve rod 5 can open valve by the 21 straight line liftings of rotary valve rod nut, also can not establish the keyway of slip positioning key 23 and valve rod 5, and installing the applanation bearing additional between tightening nut 6 and the expanding tense machine 7 up and down, Stem Mut 21 and support 16 are fixed by locating stud, directly the part of Stem Mut 21 is exposed in rotary valve rod 5 upper ends, makes valve rod rotation and lifting opening/shutting valve.

A kind of cabin-bottom valve of the present invention also has following characteristics on its design of Sealing Structure:

The sealing surface of water intake seal ring is vertical or little gradient design, it is by the foreign matter in the water body of water intake, can't be deposited on the sealing surface and cause seal drag, plane on simultaneously the seal ring bottom is higher than at the bottom of the valve body, and interplanar is provided with the foreign matter guiding gutter at the bottom of seal ring bottom and the valve body, and the foreign matters that is deposited on the valve body bottom surface is contacted with sealing surface influences sealability.

The high tolerance scope is adopted in cooperating of expanding tense machine and valve rod, leaves certain interval between the two, makes expanding tense machine under the effect of self tension force, and adjustment makes two water intake sealing forces balanced reliable to the elastic force of both sides valve plate automatically.

Valve body bottom water outlet sealing surface is taper, and foreign matters is deposited on the sealing surface under the effect of current, makes sealability more reliable than the design of plane sealing face.

Water intake and water outlet can be realized the two Safety performances of opening of the double-sealing of controlling simultaneously.

Its using method of a kind of cabin-bottom valve of the present invention and working principle are as follows:

Open: when the time by open-shut device rotary valve rod nut or valve rod top, valve rod is up with straight line or rotation mode, drive expanding tense machine and drive valve plate up along guide plate by expanding tense machine, sealing surface of valve plate separates with water intake seal ring sealing surface, it is up to drive flap simultaneously, and the flap sealing surface separates with water outlet sealing surface at the bottom of the valve, at this moment valve open, when the guide that is connected with guide plate when valve plate went upward to the guide plate top, valve was in the complete opening state.

Close: when the opposite spin Stem Mut of rotation valve rod nut or valve rod when opening or valve rod, valve rod is descending with straight line or rotation mode, and drive flap, expanding tense machine is descending, it is descending that expanding tense machine drives valve plate, when the guide that connects guide plate when valve plate walks under the guide plate terminal, valve plate is on descending end, and be fastened on the seal ring, realize sealing just, continue rotary valve rod nut or valve rod and drive the guide that expanding tense machine is connected with valve plate, descending along the elongated hole on the valve plate, this moment, the elastic force effect of expanding tense machine was used for valve plate by guide, and sealing surface of valve plate closely is fastened on the seal ring sealing surface, realize reliable sealing, flap is descending simultaneously, and its sealing surface closely is fastened in the water outlet sealing of valve body bottom, and realizes reliable sealing under the descending elastic force effect of valve rod.

Claims

1, a kind of cabin-bottom valve, it is characterized in that structure comprises valve body (1), valve gap (14), valve rod (5), support (16), Stem Mut (21), flap (2), expanding tense machine (7), tightening nut (6), valve plate (8), seal ring (10), guide plate (11), feather key (23), valve gap (14) is arranged on valve body (1) upper end by gasket seal (13), be provided with valve rod support (16) above the valve gap (14), valve rod (5) upper end is by Stem Mut (21), bearing gland (22), bearing (26) is arranged in the support (16), valve rod (5) top has vertical keyway and is slidingly matched with the slide key that is arranged in the support (16), valve gap (14) is passed at valve rod (5) middle part, and successively by gland nut (20), Gland (19), stuffing box packing (18), filler pressure pad (7) is tightly connected together with valve gap (14), hypomere passes expanding tense machine (7) in the valve rod (5), and be attached thereto by expanding tense machine (7) two tightening nuts (6) up and down, valve rod (5) lower end extends to valve body (1) cavity bottom drain opening top, and by splitting annulus (3), flap lid (4) links together with flap (2), the expanding tense machine (7) that is connected hypomere in the valve rod (5) forms sliding with both sides valve plate (8) by guide assembly parts (9), be rotationally connected, valve plate (8) sealing surface closely is fastened on the inner sealing surface of both sides valve inleting water mouth sealing rings (10), and change by guide assembly parts (6) and the guide plate (11) that is arranged on the valve body (1) valve plate (8) upper end, be slidingly connected.

2, a kind of cabin-bottom valve according to claim 1 is characterized in that the inferior pyramidal sealing surface of flap (2) lower end closely is fastened on the inferior pyramidal sealing surface of valve body (1) end floss hole upper end.

3, a kind of cabin-bottom valve according to claim 1 is characterized in that being respectively equipped with on valve rod (5) and Stem Mut (21), the corresponding screw thread of tightening nut (6), and the vertical keyway corresponding with feather key (23) is with the corresponding circular groove of divided ring (3).

4, a kind of cabin-bottom valve according to claim 1, the inferior pyramidal sealing surface tapering in its outside, lower end is 10 °-60 ° to it is characterized in that tightening together afterwards by cone-shaped sealing ring (27) and pressing plate (28) by flap (2), and consistent with valve body (1) end floss hole sealing surface tapering.

5, a kind of cabin-bottom valve according to claim 1, it is characterized in that seal ring (10) sealing surface tapering sets in 10 °-30 °, it is parallel with sealing surface of valve plate that valve plate (8) is gone up its longitudinal midline of elongated hole that connects with the tight device (7) that expands, seal ring (10) sealing surface is designed to and valve body (1) when the bottom surface is vertical, and the elongated hole center line on the valve plate (8) and the angle of sealing surface are 5 °-15 °.

6, a kind of cabin-bottom valve according to claim 1 is characterized in that it is positive circular hole that expanding tense machine (7) is gone up the pin-and-hole that connects valve plate (8).

7, a kind of cabin-bottom valve according to claim 1 is characterized in that the bottom plane of valve body (1) inner chamber is lower than the last plane of its outer flange, valve by body at the bottom of spill flange on flange and the Ceiling be mounted on the cabin base plate.