CN103185144A

CN103185144A - Ultralight type water cooling self-pressing and self-sealing valve employing nuclear power steam

Info

Publication number: CN103185144A
Application number: CN2012100115152A
Authority: CN
Inventors: 陈光焕
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-03
Filing date: 2012-01-03
Publication date: 2013-07-03
Anticipated expiration: 2032-01-03
Also published as: CN103185144B

Abstract

The invention discloses an ultralight type water cooling self-pressing and self-sealing valve employing nuclear power steam. The valve comprises a valve body, wherein an air chamber I, an inlet and an outlet are arranged in the valve body; the outlet is sealed with a valve clack, a pilot hole is formed in the valve clack; an liner barrel is sleeved in a valve cap; a gap exists between the liner barrel and the valve clack; an air chamber II is formed in the liner barrel; the valve cap is fixed on the valve body; a valve rod and a switch guide rod are movably matched and connected; the switch guide rod and a valve rod core are movably matched and connected; the valve rod, the switch guide rod and the valve rod core are all sealed by closed cylinders; only a valve rod pointed plug is exposed out of the pilot hole; and an inner core magnetic ring is arranged in the valve rod core. The pressure of steam is changed into power for opening and closing the valve, and the non-movable sealing ultralight type water cooling is achieved.

Description

Nuclear power steam surperlight type water cooling pressure self-enclosed valve

Technical field

The present invention relates to a kind of valve, more precisely a kind of self pressure of nuclear power steam is become the power of making the valve Push And Release, realize not having the water-cooled pressure self-enclosed valve of the sealing of living surperlight type.

Background technique

The history of human existing centuries of application to valve, that uses till today mainly contains stop valve, gate valve, butterfly valve and ball valve etc. always; And the seal ring requisite lifelong accessory that always is exactly any valve.The particularly gap sealing between the rotation of static valve gap and valve rod (sealing of living), and the various valves that are sealed in High Temperature High Pressure, its adjustment, to change seal ring just more frequent.Though world today's new and high technology is fast-developing, is just promoting aspect the material of seal ring also, and do not implementing to get rid of the use seal ring or improve the seal ring Environmental Conditions and alleviate the excellent process of valve Push And Release dynamics at the valve design aspect.For example, an inside nominal diameter is the stop valve of 100mm, uses in the medium of nominal pressure 8Mpa, and its strength of closing must be greater than 6280Kg, and adopts the design's scheme, only needs the startup strength of 90Kg to get final product.Too big just because of the dynamics of closing, when big Du Shan Shenzhen and Hong Kong, Dalian on July 16 in 2010 piping for tank farm knocking fuel has just been arranged, needing tens lads to take turns flow operation just bars up the valve of oil sources, in March, 2011 and for example, the large-scale standby generator set of Fukushima, Japan nuclear plant is washed away by tsunami, no large power supply, the valve of not opening add does not intake and is waiting " raw material rod " helplessly and caused nuclear leakage by being hardening cracked.If utilize the immediate action valve of present technique, only need a people light to carry, can quick closedown.

World today's energy crisis is extremely urgent, and the focus that the safety of nuclear power more causes dispute.So the application of present technique not only can reduce " adding water " expense of nuclear power plant's writing, and can reduce nuclear power plant's emergent and many groups Generator Set of being equipped with for it; Especially nuclear power has been increased a reliable guarantee safely.

Summary of the invention

The object of the present invention is to provide a kind of self pressure of steam to be become the power of making the valve Push And Release, realize not having the water-cooled pressure self-enclosed valve of the sealing of living surperlight type.

In order to achieve the above object, the solution that the present invention takes is: a kind of nuclear power steam surperlight type water cooling pressure self-enclosed valve, it comprises valve body, be provided with air chamber in the valve body No. one, import and outlet, flap is enclosed in the outlet port, be provided with pilot hole in the flap, inside lining sleeve is enclosed within the valve gap, between inside lining sleeve and the flap slit is arranged, and forms No. two air chambers in the inside lining sleeve, valve gap is fixed on the valve body, valve rod with the switch guide rod work join and be connected, the switch guide rod with the valve rod fuse work join and be connected, valve rod and switch guide rod and valve rod fuse are all sealed by closed cylinder, only there is valve rod point chock plug to be exposed to outside the pilot hole, the fuse internal magnetic ring is arranged in the valve rod fuse.

This valve has been taked totally enclosed mode, namely exactly the slit between valve gap and the valve rod is sealed with closed cylinder, the change motive sealing is static seal, or utilizes the technology of welding will cool off cylinder bottom portion and the fixing welding of closed cylinder implementation, makes it never leak (having got rid of sealing alive).Under inside and outside isolated situation, utilize the suction of high magnetic neodymium iron boron or electromagnetic attraction to draw the Push And Release that valve is implemented in inner valve rod action.Yet how only tens kilograms of magnet suction bring into play the effect of hundreds of kilogram even several thousand kilograms, just the emphasis of this case innovation part.Its method is: the valve endosome is arranged two pressure-bearing air chambers respectively.An air chamber is arranged on the power of the unlatching of the conduct on every side flap on flap top; Lower plane at flap arranges air chamber No. two again, and self pressure that utilizes steam compresses flap and outlet and closes (because the outlet port belongs to zero pressure) tight.When valve need be opened, as long as with No. two air chamber step-downs a little, No. one the interior pressure of air chamber became the power of opening flap at once.Like this, not only realized pressure self-enclosed, but also reached to press off certainly and opened; Not only weight is closed tight but also is opened easily.

For example: an inside nominal diameter is the stop valve of 100mm, use is in the medium of nominal pressure 8MPa, and its strength of closing must be greater than 6280Kg, and adopts the design's scheme, only need the startup strength of 90Kg get final product, and the dynamics of sealing reach as high as 8000 surplus kilogram.Its formula is as follows: suppose: inside nominal diameter 100mm, nominal pressure 8MPa, inside nominal diameter 100mm:50 * 50 * 3.14 * 0.8Kg=6280Kg, valve export external diameter of pipe

(the highest sealing dynamics),

EQSN Φ 165.2mm-0.2mm=165mm (FB Φ), No. two air chambers and flap slit area XD Φ 11.6mm:5.8 * 5.8 * 3.14 * 0.8Kg=84.5Kg, the deadweight of flap in addition, as seen starting strength only needs 90Kg; Through the parameter of screw rod or gear, actual startup dynamics is not as good as 20Kg again.

For the damage to the valve power unit of the high temperature of getting rid of nuclear energy, this valve has also been taked upside-down mounting and water-cooled mode, namely is exactly will cool off cylinder to be connected by heat insulation support tube with valve gap; On the cooling cylinder cooling water intake and outlet are arranged, in the cooling cylinder inner bag, oil storage cylinder (lubricant oil), oil sealing cylinder, switch guide rod are arranged, guide rod the higher authorities have internal thread and the work of valve rod outside thread to join, and following is equipped with the rectangular link block and is connected with the valve rod fuse; Cooling water circulates outside the tank.Closed cylinder is fixed on cooling cylinder bottom portion, and closed cylinder is built-in with the valve rod fuse, and the fuse periphery is embedded with internal magnetic ring.Traction cylinder covers closed cylinder, the outer magnetic ring of traction cylinder just in time with the internal magnetic ring of valve rod fuse on same horizontal line, the periphery of traction cylinder outer magnetic ring is overlapped envelope magnetic cylinder again; Traction cylinder bottom centre is carved with square hole and matches with the control screw rod, be equipped with the limit switch of Push And Release on the control screw rod, being carved with guide groove on the switch base is controlling limit switch by guide rod and can only move up and down, the other end of control screw rod is the power tie point, bearing location by the shoring bottom, shoring is suitable for reading to be fixed on cooling cylinder bottom portion by screw, and shoring has mode and the maintenance that side door is convenient to limit switch.

Description of drawings

Fig. 1 is structural representation of the present invention.

Among the figure: 1, valve body, 2, import, 3, an air chamber, 4, pilot hole, 5, outlet, 6, valve rod point chock plug, 7, lead steam chest, 8, flap, 9, valve rod, 10, No. two air chambers, 11, inside lining sleeve, 12, valve gap, 13, set screw, 14, heat insulation support tube, 15, circulating water is imported and exported, 16, the cooling cylinder, 17, the switch guide rod, 18, oil storage cylinder, 19, the oil sealing cylinder, 20, cooling cylinder inner bag, 21, link block, 22, closed cylinder is spiral shell fixedly, and 23, the valve rod fuse, 24, shoring is spiral shell fixedly, 25, closed cylinder, 26, the fuse internal magnetic ring, 27, the traction cylinder outer magnetic ring, 28, the envelope magnet ring, 29, shoring, 30 traction cylinders, 31, the shoring side door, 32, guide groove, 33, guide rod, 34, limit switch, 35, the control screw rod, 36 bearings, 37 power tie points.

Specific embodiments

Below in conjunction with embodiment and accompanying drawing thereof the present invention is remake description.

Referring to Fig. 1, a kind of nuclear power steam surperlight type water cooling pressure self-enclosed valve, it comprises valve body 1, be provided with air chamber 3 in the valve body 1 No. one, import 2 and outlet 5, flap 8 is enclosed in outlet 5 places, be provided with pilot hole 4 in the flap 8, inside lining sleeve 11 is enclosed within the valve gap 12, between inside lining sleeve 11 and the flap 8 slit is arranged, form No. two air chambers 10 in the inside lining sleeve 11, valve gap 12 is fixed on the valve body 1 by set screw 13, valve rod 9 is lived in joining with switch guide rod 17 and is connected, and switch guide rod 17 is lived in joining by link block 21 with valve rod fuse 23 and is connected, and valve rod 9 and switch guide rod 17 and valve rod fuse 23 are all sealed by closed cylinder 25, only there is valve rod point chock plug 6 to be exposed to outside the pilot hole 4, fuse internal magnetic ring 26 is arranged in the valve rod fuse 23.

Referring to Fig. 1, described valve rod 9 is joined by the internal thread work of heat insulation support tube 14 and switch guide rod 17 and is connected, cooling cylinder 16 is fixedlyed connected with heat insulation support tube 14, in the cooling cylinder 16 inner bag 20 is arranged, oil storage cylinder 18, oil sealing cylinder 19, switch guide rod 17, the center of switch guide rod 17 is running spaces of valve rod 9, all be carved with square hole in the middle of the top of the lower central of switch guide rod 17 and valve rod fuse 23, switch guide rod 17 is lived in joining by rectangular link block 21 with valve rod fuse 23 and is connected, closed cylinder 25 is fixed on the bottom of cooling cylinder 16 by closed cylinder screw 22, closed cylinder 25 is built-in with valve rod fuse 23, valve rod fuse 23 peripheries are embedded with fuse internal magnetic ring 26, traction cylinder 30 covers closed cylinder 25, the periphery of traction cylinder 30 is embedded with traction cylinder outer magnetic ring 27, traction cylinder outer magnetic ring 27 and fuse internal magnetic ring 26 are on same horizontal line, be with envelope magnetic cylinder 28 outside the traction cylinder outer magnetic ring 27 again, the base plate center of traction cylinder 30 is carved with square hole and is matched with control screw rod 35, be equipped with two limit switches 34 on the control screw rod 35, respectively control reach the position and the pass put in place, be carved with guide groove 32 on the pedestal of two limit switches 34, being equipped with guide rod 33 in the guide groove 32 is controlling limit switch 34 and can only move up and down, the other end of control screw rod 35 is that power tie point 37 is fixing by bearing 36, bearing 36 is embedded in the bottom of shoring 29, and shoring 29 is fixed on the bottom of cooling cylinder 16 by screw 24.

Referring to Fig. 1, described shoring 29 has side door 31, is convenient to debugging and the maintenance of limit switch 34.

Referring to Fig. 1, because this valve has been got rid of the common fault of leaking between its valve rod slit of all valves, so this valve has been taked the method for upside-down mounting, avoid high temperature to the damage of power unit.

Referring to Fig. 1, on the described pilot hole 4 air guide chamber 7 is arranged.

Referring to Fig. 1, the exit face of described flap 8 is made triangle, is convenient to the usefulness of flow control.Referring to Fig. 1, there is circulating water to import and export 15 on the described cooling cylinder 16, it is power unit second ensureing of preventing from being heated that circulating water imports and exports 15.

Referring to Fig. 1, the square hole that the central space of described switch guide rod 17 and link block 21 are settled completely cuts off, and avoids the heat of thread gaps to flow into closed cylinder 25 damage fuse internal magnetic rings 26.

Referring to Fig. 1, described oil storage cylinder 18, oil wherein provide to the lubricated usefulness of valve rod fuse 23.Described oil sealing cylinder 19 is to implement with the heavy physical principle of oily light-water.Because this valve is the mode of upside-down mounting, in use, all be to accumulate static condensed water for a long time from the 14 interior ends until closed cylinder 25 suitable for reading of heat insulation strut.Described cooling cylinder inner bag 20, its wall thickness must meet the requirement of pressure.Described valve rod fuse 23 comprises fuse internal magnetic ring 26, and both integral body all is to be wrapped in by anticorrosive, prevents the damage of magnet.Described envelope magnet ring 28 never disappears to guarantee magnetic.

Referring to Fig. 1, the working principle of this valve is summarized as follows: flap 8 is enclosed in outlet 5 places, when steam enters air chamber 3 No. one from import 2, wherein enters into air chamber 10 No. two the slit of part steam between inside lining sleeve 11 and flap 8.Because the slit between valve rod 9 and the valve gap 12 has been closed cylinder 25 and has sealed, and is equal to so form the pressure of No. two air chambers 10 and an air chamber 3 fast; At this moment because outlet 5 belongs to zero pressure, so flap 8 is subjected to the pressure of No. two air chambers 10 to seal valve port tight.Here it is under the situation of inside and outside isolated (referring to that slit between valve rod 9 and switch guide rod 17 and the cooling cylinder 16 is closed cylinder 25 and seals), realizes pressure self-enclosed.Pressure is more high to close more sternly.The unlatching of valve: the integral body of valve rod 9 and switch guide rod 17, valve rod fuse 23 all is arranged among the steam of closed cylinder 25 pressure, only be exposed to outside the pilot hole 4 with regard to valve rod point chock plug 6, because pilot hole 4 cross sections minimum (account for valve nominal flow path 1.5%), so the dynamics of opening is extremely light.The power of opening comes ultromotivity tie point 37 to drive traction cylinder 30 in rotation, because the strength of fuse internal magnetic ring 26 adhesives makes valve rod fuse 23 also in rotation, valve rod 9 is along with screw thread descends at switch guide rod 17 centers.When as long as valve rod point chock plug 6 is lowered by 0.10 millimeter, the steam around it down pushes away valve rod point chock plug 6 simultaneously from pilot hole 4 rapid past outlet 5 sluicings, makes pilot hole 4 drainage at full capacity, and at this moment No. two air chamber 10 interior pressure descend; When the pressure of the air chamber 3 of pressure ratio of No. two air chambers 10 was lower slightly, its flap 8 natures were turned down by the pressure of an air chamber 3, and thread load is alleviated, and only play metering function.When the space of No. two air chambers 10 becomes more and more littler, its steam is extruded from pilot hole 4; Simultaneously, the backlash of pilot hole 4 discharge of steam is also helping the decline of flap 8.This shows that much no matter employed vapor pressure has, as long as the pressure of No. two air chambers 10 slightly is reduced to air chamber 3 No. one, it just is opened easily naturally.The closing of valve (recovery): because the adhesive strength of internal magnetic ring 26 and outer magnetic ring 27, as long as reversing, the power point make valve rod 9 toward rising (because of under the situation of pressure ad eundem, ascensional dynamics is extremely light), valve rod point chock plug 6 is made up in pilot hole 4, along with flap 8 continues to rise, the space of No. two air chambers 10 enlarges gradually, and the higher steam of pressure from the slit of flap 8 and inside lining sleeve 11 constantly to just in No. two air chambers 10 of expansion space, filling; Just because the filling of this burst strength can not rebounded flap 8 by the pressure of an air chamber 3, valve rod 9 thread load are alleviated, though the screw thread counter-rotating resets like this, be intended to control flow actually and close at a slow speed; When flap 8 closes to the extreme, reducing gradually because export 5 vapor pressure, and the pressure of No. two air chambers 10 is increasing gradually, so close more and more tighter.Realized pressure self-enclosed.

Claims

1. nuclear power steam surperlight type water cooling pressure self-enclosed valve, it is characterized in that: it comprises valve body (1), be provided with an air chamber (3) in the valve body (1), import (2) and outlet (5), flap (8) is enclosed in outlet (5) and locates, be provided with pilot hole (4) in the flap (8), inside lining sleeve (11) is enclosed within the valve gap (12), between inside lining sleeve (11) and the flap (8) slit is arranged, form No. two air chambers (10) in the inside lining sleeve (11), valve gap (12) is fixed on the valve body (1) by set screw (13), valve rod (9) is lived in joining with switch guide rod (17) and is connected, switch guide rod (17) is lived in joining by link block (21) with valve rod fuse (23) and is connected, valve rod (9) and switch guide rod (17) and valve rod fuse (23) are all sealed by closed cylinder (25), only there is valve rod point chock plug (6) to be exposed to outside the pilot hole (4), fuse internal magnetic ring (26) is arranged in the valve rod fuse (23).

2. nuclear power steam surperlight type water cooling pressure self-enclosed valve according to claim 1, it is characterized in that: described valve rod (9) is joined with the internal thread work of switch guide rod (17) by heat insulation support tube (14) and is connected, cooling cylinder (16) is fixedlyed connected with heat insulation support tube (14), in the cooling cylinder (16) inner bag (20) is arranged, oil storage cylinder (18), oil sealing cylinder (19), switch guide rod (17), the center of switch guide rod (17) is the running space of valve rod (9), all be carved with square hole in the middle of the top of the lower central of switch guide rod (17) and valve rod fuse (23), switch guide rod (17) is lived in joining by rectangular link block (21) with valve rod fuse (23) and is connected, closed cylinder (25) is fixed on the bottom of cooling cylinder (16) by closed cylinder screw (22), closed cylinder (25) is built-in with valve rod fuse (23), valve rod fuse (23) periphery is embedded with fuse internal magnetic ring (26), traction cylinder (30) covers closed cylinder (25), the periphery of traction cylinder (30) is embedded with traction cylinder outer magnetic ring (27), traction cylinder outer magnetic ring (27) and fuse internal magnetic ring (26) are on same horizontal line, be with envelope magnetic cylinder (28) outside the traction cylinder outer magnetic ring (27) again, the base plate center of traction cylinder (30) is carved with square hole and is matched with control screw rod (35), be equipped with two limit switches (34) on the control screw rod (35), respectively control reach the position and the pass put in place, be carved with guide groove (32) on the pedestal of two limit switches (34), being equipped with guide rod (33) in the guide groove (32) is controlling limit switch (34) and can only move up and down, the other end of control screw rod (35) is that power tie point (37) is fixing by bearing (36), bearing (36) is embedded in the bottom of shoring (29), and shoring (29) is fixed on the bottom of cooling cylinder (16) by screw (24).

3. nuclear power steam surperlight type water cooling pressure self-enclosed valve according to claim 2, it is characterized in that: described shoring (29) has side door (31).

4. nuclear power steam surperlight type water cooling pressure self-enclosed valve according to claim 1 is characterized in that: air guide chamber (7) is arranged on the described pilot hole (4).

5. nuclear power steam surperlight type water cooling pressure self-enclosed valve according to claim 1, it is characterized in that: the exit face of described flap (8) is made triangle.

6. nuclear power steam surperlight type water cooling pressure self-enclosed valve according to claim 2 is characterized in that: have circulating water to import and export (15) on the described cooling cylinder (16).

7. nuclear power steam surperlight type water cooling pressure self-enclosed valve according to claim 2 is characterized in that: the square hole that the central space of described switch guide rod (17) and link block (21) are settled completely cuts off.