CN204267751U - Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration - Google Patents
Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration Download PDFInfo
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- CN204267751U CN204267751U CN201420458389.XU CN201420458389U CN204267751U CN 204267751 U CN204267751 U CN 204267751U CN 201420458389 U CN201420458389 U CN 201420458389U CN 204267751 U CN204267751 U CN 204267751U
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Abstract
The utility model discloses a kind of multiple switching leak-resistance valve being provided with cylndrical surface plate valve sealing configuration, comprise valve body, valve body is combined by landing nipple, locking cylinder and lower contact, valve inner is provided with the tubulose mandrel a of reciprocally movement, and mandrel a drives realization to move back and forth by switching tools; Valve inner is provided with the valve plate and valve seat of working in coordination near lower end, valve plate is arranged on supporting base and also arranges near the side of mandrel a, and supporting base is fixed on valve interior wall, and valve seat can move back and forth along valve axis direction; When opening leak-resistance valve, mandrel a moves down, first promote valve seat by driving mechanism to move down, mandrel a continues promote valve plate lateral rotation when moving down contact valve plate thus open leak-resistance valve, when closing leak-resistance valve, mandrel a moves, and valve plate automatically resets under action of reset spring, and in mandrel a continuation, Mobile Communication crosses driving mechanism and drives valve seat moves and be pressed against valve plate thus close leak-resistance valve; The surface of contact of valve plate and valve seat is cylndrical surface.
Description
Technical field
The utility model relates to a kind of safe containment device for oil drilling and field produces aspect, belongs to technical field of petroleum downhole equipment.
Background technique
At present, leak-resistance valve used in the subsurface environment of petroleum production, some employing ball valve sealing devices, such as, describe a kind of leak-resistance valve in Chinese utility model patent (CN201507274U), adopt ball valve sealing structure, the mandrel of valve inner can drive ball valve to open or close.Elasticity block tongue (also referred to as jerk-finger) is provided with above mandrel, when switching tools stretches into valve inner, and the male cooperation of elasticity block tongue end, moving mandrel can be with move up and down, realize the opening and closing of leak-resistance valve.
But the inside latus rectum of ball valve sealing device is less, plate valve seal arrangement is adopted so increasing, valve plate opposite valve seat in the type seal arrangement is generally and upwardly opens, when having desilting or junk falls within valve inner, easily cause valve plate normally not open, thus affect oil producing operation; In addition, valve plate in the type seal arrangement and usually adopt the sealing configuration of sphere or cone match between valve seat, the valve plate rotarily opened for side direction is inapplicable, especially when valve plate can not normally be closed, need to rely on valve seat compressing valve plate to reset, now sealing effect is unreliable.
Model utility content
For problems of the prior art, the purpose of this utility model is to provide a kind of multiple switching leak-resistance valve being provided with plate valve sealing configuration, valve plate wherein and valve seat adopt cylndrical surface fitted seal, valve plate opposite valve seat upwardly opens, desilting or junk can be solved fall within valve body and affect the problem that plate valve opens, ensure that valve body possesses larger inside latus rectum simultaneously, the reliability at long-term high-pressure environment lower seal can be ensured again.
The purpose of this utility model is achieved through the following technical solutions:
Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration, comprise valve body, valve body is combined by landing nipple, locking cylinder and lower contact from top to bottom successively, valve inner is provided with the tubulose mandrel a that can move back and forth along valve axis direction, and mandrel a drives realization to move back and forth by switching tools; Described valve inner is provided with the valve plate and valve seat of working in coordination near lower end, valve plate is arranged on supporting base and also arranges near the side of mandrel a, and described supporting base is fixed on valve interior wall, and valve seat can move back and forth along valve axis direction; When opening leak-resistance valve, mandrel a moves down, first promote valve seat by driving mechanism to move down, mandrel a continues promote valve plate lateral rotation when moving down the described valve plate of contact thus open leak-resistance valve, when closing leak-resistance valve, mandrel a moves, and described valve plate automatically resets under action of reset spring, and in mandrel a continuation, Mobile Communication crosses driving mechanism and drives valve seat moves and be pressed against valve plate thus close leak-resistance valve; The surface of contact of described valve plate and valve seat is cylndrical surface.
Further, described mandrel a upper end is provided with some reed shape jerk-fingers, and is divided into laterally zygomorphic two groups, and every root jerk-finger end is provided with boss, and boss exceeds the upper and lower side of jerk-finger; Mandrel a tube wall is provided with the elongated hole of shape and described jerk-finger adaptation, form the deformation space of jerk-finger, valve interior wall is provided with the two sections of locating slot a coordinated with jerk-finger, the spacing of two sections of locating slot a is determined according to the displacement distance of mandrel a, and the boss of upper and lower two groups of jerk-fingers coordinates with described locating slot a thus limits the displacement distance of mandrel a.
Further, described mandrel a upper end is connected with engagement mandrel, and described jerk-finger, elongated hole are all arranged on engagement mandrel, and jerk-finger is removably fixed, and adopt thread seal to connect between engagement mandrel and mandrel a; Valve seat one section of body can be stretched in described mandrel a lower end.
Further, described driving mechanism comprises and is arranged on lock pawl between mandrel a outer wall and valve interior wall and tubular base, lock pawl is reed shape and is provided with some, some lock pawls are fixed on same one end of tubular base, the other end of tubular base connects described valve seat, every root lock pawl end is provided with boss, and boss exceeds the upper and lower side of lock pawl.
Further, several open-works are provided with in the middle part of described tubular base, a steel ball is provided with in each open-work, valve interior wall is provided with the locating slot b coordinated with steel ball, mandrel a outer wall is provided with the containing groove coordinated with steel ball, when leak-resistance valve is in closed condition, steel ball is positioned at described containing groove, in mandrel a moving process, steel ball is driven then to drive tubular base to move by containing groove, depart from from containing groove when steel ball arrives locating slot b and enter locating slot b, mandrel a continues to move down and no longer drives tubular base.
Further, described valve interior wall is provided with the locating slot c coordinated with lock pawl, mandrel a moves past in journey, limited the position of described lock pawl by this locating slot c.
Further, described valve plate is fixed on supporting base by bearing pin, and described Returnning spring is made up of the torsion spring be set on bearing pin.
Further, described valve seat is provided with inside support ring, inside support ring contacts with valve plate and seals, and surface of contact is cylndrical surface; Inside support ring is provided with seal ring, and shape and the inside support ring cylndrical surface port of seal ring are suitable.
Further, described landing nipple, locking cylinder and lower contact between adopt thread seal to connect, joint is also provided with O RunddichtringO; O RunddichtringO is provided with between described valve seat and lower contact inwall.
Further, the boss of described jerk-finger end and the fitting surface of the fitting surface of locating slot a, the boss of lock pawl end and locating slot c are all arranged to inclined-plane; Containing groove on described locating slot b, mandrel a outer wall and the fitting surface of steel ball are all arranged to inclined-plane.
Further, described switching tools comprises supporting positive cover, mesh sleeve and lower supporting positive cover, and mesh sleeve inside is provided with tubulose mandrel b, and mandrel b is threaded with upper supporting positive cover and lower supporting positive cover; With several partitioning slot on the barrel of described mesh sleeve, boss is provided with in the middle part of barrel, match with the boss of described jerk-finger, the outer one end near lower supporting positive cover of described mesh sleeve is coated with sheath, sheath moves boss in the middle part of extruding mesh sleeve can compress it thus reduce the external diameter of boss place mesh sleeve, described sheath inside be provided with Returnning spring.
Further, be provided with and help pull a cart between described upper supporting positive cover and mesh sleeve, helping pull a cart is threaded with upper supporting positive cover, is connected by limited step a with mesh sleeve; Help pull a cart when being subject to overload pulling force with one section of thin segment and can rupture.
Further, described sheath is arranged to inclined-plane near one end outer tube wall of lower supporting positive cover, and this end jacket inner wall is provided with limited step b, and Returnning spring is set on mandrel b, is arranged between mesh sleeve end and limited step b; Described sheath barrel is provided with the open-work that several can discharge internal liquid.
Further, one end that described mesh sleeve coordinates with Returnning spring is provided with set screw nut, described mandrel b is provided with the limited step c coordinated with set screw nut, and under the restriction of set screw nut, limited step c, Returnning spring is in Pre strained state.
Further, the partitioning slot on described mesh sleeve barrel extends to mesh sleeve one end near upper supporting positive cover, and this end is provided with fixed cover restriction barrel and opens, fixed cover is connected by limited step d with barrel.
Further, between described upper supporting positive cover and mandrel b, stopping screw is provided with between lower supporting positive cover and mandrel b; Stopping screw is provided with between described set screw nut and mesh sleeve barrel.
The leak-resistance valve adopting said structure to arrange has the following advantages:
1, metal valve plate cylndrical surface coordinates with the cylndrical surface of seal valve seat band high-temperature resistant rubber and reaches sealing purpose, meet the requirement of long-term safety work under the working pressure of 35MPa, the inside support ring that seal valve seat inside is installed, pressure increase can be played and support valve plate to during certain value, prevent excessive condensation rubber, ensure in repeatedly opening and closing process, sealing configuration energy long-term safety uses reliably.
2, the utility model seal valve seat moves downward, and valve plate is opened downwards, and when having desilting or junk falls within valve plate, in valve plate opening process, desilting or junk are washed into shaft bottom, and can not affect valve plate and open, guarantee instrument normally works.
If 3, in switching tools folding process, sheath lower end step is encountered, meeting moves, this is likely that the inner foreign material of oil well cause, and the intermediate lands of sheath compressive engagement sleeve then, reduces mesh sleeve diameter and realize as far as possible passing through; When running into this situation, sheath can be driven and move, Compress Spring, departs from by after blocking position, helps pull a cart and gets back to original position under the action of the spring, and in the middle part of ensureing mesh sleeve, boss is not compressed by sheath and normally works.
On carry in process, if leak-resistance valve could not be closed and depart from by switching tools, this is likely that leak-resistance valve is out of order, because top jerk-finger does not reset, now switching tools is stopped and can not normally be exited, and continues to increase upper lifting force and helps pull a cart and can be pulled off, mesh sleeve is relatively gone up supporting positive cover and is moved down, when middle part boss runs into sheath, ramp effect lower convex platform is compressed, and reduces mesh sleeve diameter and ensures that switching tools exits smoothly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model (plate valve closed condition);
Fig. 2 is A portion zoomed-in view in Fig. 1;
Fig. 3 is B portion zoomed-in view in Fig. 1;
Fig. 4 is structural representation of the present utility model (plate valve opening state);
Fig. 5 is first half structural representation of the present utility model (plate valve closed condition);
Fig. 6 is Lower Half structural representation of the present utility model (plate valve closed condition);
Fig. 7 is first half structural representation of the present utility model (plate valve opening state);
Fig. 8 is Lower Half structural representation of the present utility model (plate valve opening state);
Fig. 9 is partial sectional perspective view of the present utility model (plate valve opening state);
Figure 10 is C portion zoomed-in view in Fig. 9;
Figure 11 be the utility model adopt the structural representation of switching tools;
Figure 12 is D portion zoomed-in view in Figure 11;
Figure 13 is E portion zoomed-in view in Figure 11.
In Fig. 1-10: 1, leak-resistance valve; 1-1, landing nipple; 1-2, engagement mandrel; 1-3, jerk-finger; 1-4, boss; 1-5, mandrel a; 1-6, lock pawl; 1-7, steel ball; 1-8, locking cylinder; 1-9, joint; 1-10, supporting base; 1-11, valve plate; 1-12, inside support ring; 1-13, valve seat; 1-14, lower contact; 1-15, bearing pin; 1-16, O RunddichtringO.
In Figure 11-13: 2, switching tools; 2-1, upper supporting positive cover; 2-2, to help pull a cart; 2-3, fixed cover; 2-4, mesh sleeve; 2-5, mandrel b; 2-6, sheath; 2-7, set screw nut; 2-8, spring; 2-9, lower supporting positive cover; 2-10, stopping screw; 2-11, boss.
Embodiment
For further setting forth the utility model for the technological means that reaches predetermined technique object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, structure of the present utility model, workflow are described in detail as follows.
Leak-resistance valve described by the utility model needs to coordinate special opening-closing tool to open, this switching tools can adopt switching tools of the prior art, the switching tools such as, described in Chinese utility model patent (CN201507274U), the utility model provides a kind of switching tools of more reliable performance simultaneously, and detailed construction is shown in that second portion describes below.
one, leak-resistance valve
As shown in Fig. 1, Fig. 4, Fig. 9 be the utility model adopt the schematic diagram of leak-resistance valve 1, this leak-resistance valve 1 comprises valve body, valve body is combined by landing nipple 1-1, locking cylinder 1-8 and lower contact 1-14 from top to bottom successively, valve inner is provided with the tubulose mandrel a1-5 that can move back and forth along valve axis direction, mandrel a1-5 drives realization to move back and forth by switching tools, use switching tools can adopt structure in Figure 11,12.The upper, open end diameter of landing nipple 1-1 is less than its main diameter, and the lower open end diameter of lower contact 1-14 is less than its main diameter, and arranging like this is the pipe fitting of conveniently upper and lower in connecting well.Adopt thread seal to connect between landing nipple 1-1, locking cylinder 1-8 and lower contact 1-14, joint is also provided with O RunddichtringO, can improve sealing effect.
As viewed in figures 5-8, valve inner is provided with the valve plate 1-11 and valve seat 1-13 that work in coordination to the more detailed structure of leak-resistance valve 1 near lower end, both surface of contact are Cylinder Surface, and valve plate 1-11 can adopt wear-resistant and corrosion resistant metal material.Valve plate 1-11 and valve seat 1-13 can all be positioned at lower contact 1-14, and valve plate 1-11 to be arranged on supporting base 1-10 and to arrange near the side of mandrel a1-5, and supporting base 1-10 is fixed on valve interior wall, and valve seat 1-13 can move back and forth along valve axis direction.Valve plate 1-11 is fixed on supporting base 1-10 by bearing pin 1-15, and bearing pin 1-15 is arranged at the side of valve plate 1-11, and specifically arrange along valve plate 1-11 cylndrical surface axial direction, valve plate 1-11 can rotarily open around bearing pin 1-15 side direction and close.Also being provided with O RunddichtringO between valve seat 1-13 and lower contact 1-14 inwall, is to improve sealing effect equally.
When opening leak-resistance valve 1, mandrel a1-5 moves down, first promote valve seat 1-13 by driving mechanism to move down, mandrel a1-5 continues promote valve plate 1-11 lateral rotation when moving down contact valve plate 1-11 thus open leak-resistance valve 1, when closing leak-resistance valve 1, mandrel a1-5 moves, valve plate 1-11 automatically resets under action of reset spring, and the Returnning spring used is made up of the torsion spring be set on bearing pin 1-15, and torsion spring quantity needs setting according to technique, preferably 2, such dynamics compares balance.In mandrel a1-5 continuation, Mobile Communication crosses driving mechanism and drives valve seat 1-13 moves and be pressed against valve plate 1-11 thus close leak-resistance valve.When valve plate 1-11 can not automatically reset, the valve seat 1-13 above moved can oppress valve plate 1-11 and reset, so the Security of this leak-resistance valve 1 is reliable, and both surface of contact are all arranged to cylndrical surface, the cooperation between convenience is mutual.
Valve seat 1-13 is provided with inside support ring 1-12, inside support ring 1-12 contacts with valve plate 1-11 and seals, and surface of contact is cylndrical surface; Inside support ring 1-12 is provided with seal ring, and shape and the inside support ring 1-12 cylndrical surface port of seal ring are suitable, and seal ring can adopt high-temperature resistant rubber circle, and inside support ring 1-12 can reinforcement sealing structure.
As shown in Fig. 2, Fig. 5, mandrel a1-5 upper end is provided with some reed shape jerk-finger 1-3, and concrete quantity needs depending on technique, and is divided into laterally zygomorphic two groups, and every root jerk-finger 1-3 end is provided with boss, and boss exceeds the upper and lower side of jerk-finger 1-3; Mandrel a1-5 tube wall is provided with the elongated hole of shape and jerk-finger 1-3 adaptation, form the deformation space of jerk-finger 1-3, valve interior wall is provided with the two sections of locating slot a coordinated with jerk-finger 1-3, two sections of locating slot a are all positioned on the inwall of landing nipple 1-1 in the present embodiment, the spacing of two sections of locating slot a is determined according to the displacement distance of mandrel a1-5, and the boss of upper and lower two groups of jerk-finger 1-3 coordinates with locating slot a thus limits the displacement distance of mandrel a1-5.Not by under external compression state, the lug bosses at end part of jerk-finger 1-3 can eject from corresponding elongated hole, now snap in one section of locating slot a, when mandrel a1-5 moves back and forth, extrude by valve interior wall, the lug bosses at end part of jerk-finger 1-3 can be retracted from corresponding elongated hole, depart from original locating slot a, until when arriving next section of locating slot a, nearest jerk-finger 1-3 ejects again lug bosses at end part and snaps in this section of locating slot a from corresponding elongated hole, completes spacing.
In order to Optimization Technology structure, mandrel a1-5 upper end is connected with engagement mandrel 1-2, and jerk-finger 1-3, elongated hole are all arranged on engagement mandrel 1-2, and jerk-finger 1-3 removably fixes, and adopt thread seal to connect between engagement mandrel 1-2 and mandrel a1-5.Mandrel a1-5 can stretch into lower end valve seat 1-13 mono-section of body, and arranging like this is to form a passage more smoothly at valve inner, so the external diameter of mandrel a1-5 or at least lower end external diameter need with valve seat 1-13 internal diameter suitable.
The driving mechanism of valve seat 1-13 comprises and is arranged on lock pawl 1-6 between mandrel a1-5 outer wall and valve interior wall and tubular base, lock pawl 1-6 is reed shape and is provided with some, concrete quantity needs depending on technique, some lock pawl 1-6 are fixed on same one end of tubular base, the other end connecting valve seat 1-13 of tubular base, every root lock pawl 1-6 end is provided with boss, and boss exceeds the upper and lower side of lock pawl 1-6, and the structure of lock pawl 1-6 and jerk-finger 1-3 is similar herein.Valve interior wall is also provided with the locating slot c coordinated with lock pawl 1-6, mandrel a1-5 moves past in journey, limited the position of lock pawl 1-6 by this locating slot c.
Several open-works are provided with in the middle part of above described tubular pedestal, a steel ball 1-7 is provided with in each open-work, valve interior wall is provided with the locating slot b coordinated with steel ball 1-7, mandrel a1-5 outer wall is provided with the containing groove coordinated with steel ball 1-7, when leak-resistance valve 1 is in closed condition, steel ball 1-7 is positioned at described containing groove, move down in process at mandrel a1-5, steel ball 1-7 is driven then to drive tubular base to move by containing groove, depart from from containing groove when steel ball 1-7 arrives locating slot b and enter locating slot b, mandrel a1-5 continues to move down and no longer drives tubular base.Now valve seat 1-13 also reaches precalculated position, does not need to be pushed again, and mandrel a1-5 continues to move down only can pushing tow valve plate 1-11.
In tubular base bottom, also be provided with joint 1-9 connecting valve seat 1-13, from Fig. 9, Figure 10, joint 1-9 does not adopt tubulose, because be also provided with supporting base 1-10 between this, joint 1-9 can adopt shaft-like or with the tubulose of large size open-work, and the area of open-work and shape need to coordinate supporting base 1-10 to arrange herein.
In the present embodiment, the boss of jerk-finger 1-3 end and the fitting surface of locating slot a, the boss of lock pawl 1-6 end and the fitting surface of locating slot c are all arranged to inclined-plane, arrange like this and can conveniently coordinate, can play drag effect, be also unlikely to be separated; Containing groove on locating slot b, mandrel a1-5 outer wall and the fitting surface of steel ball 1-7 are all arranged to inclined-plane, and object is with identical above.
two, switching tools
As shown in Figure 11, Figure 12 be the utility model adopt the structural representation of switching tools 2, this switching tools 2 comprises supporting positive cover 2-1, mesh sleeve 2-4 and lower supporting positive cover 2-9, mesh sleeve 2-4 inside is provided with tubulose mandrel b2-5, and mandrel b2-5 is threaded with upper supporting positive cover 2-1 and lower supporting positive cover 2-9.With the groove of axis on upper supporting positive cover 2-1 and lower supporting positive cover 2-9 outer wall, upper supporting positive cover 2-1 and lower supporting positive cover 2-9 can play maintained switch instrument 2 movement direction, prevent the effect of eccentric wear.
With several partitioning slot on the barrel of mesh sleeve 2-4, partitioning slot extends to mesh sleeve 2-4 one end near upper supporting positive cover 2-1, not divided near one end of lower supporting positive cover 2-9 at mesh sleeve 2-4.Mesh sleeve 2-4 is provided with fixed cover 2-3 restriction barrel and opens near one end of upper supporting positive cover 2-1, fixed cover 2-3 is connected by limited step d with barrel.
Being provided with boss 2-11 in the middle part of mesh sleeve 2-4 barrel, with inclined-plane, can match with the boss of jerk-finger 1-3 in this boss 2-11 both sides, thus band moving mandrel a1-5.The outside one end near lower supporting positive cover 2-9 of mesh sleeve 2-4 is coated with sheath 2-6, if sheath 2-6 moved, boss 2-11 in the middle part of mesh sleeve 2-4 can be extruded, can to its compression thus reduce boss place mesh sleeve 2-4 external diameter (this due to mesh sleeve 2-4 by gap segmentation cause), such setting is the obstruction caused to reduce boss place, the turnover of Convenient switch instrument 2.
Sheath 2-6 is arranged to inclined-plane near one end outer tube wall of lower supporting positive cover 2-9, and this end sheath 2-6 inwall is provided with limited step b, and Returnning spring 2-8 is set on mandrel b2-5, is arranged between mesh sleeve 2-4 end and limited step b; Sheath 2-6 barrel is provided with the open-work that several can discharge internal liquid, and when sheath 2-6 compression reseting spring 2-8, the liquid between sheath 2-6 and mandrel b2-5 can be discharged in time, can not produce resistance.
One end that mesh sleeve 2-4 coordinates with Returnning spring 2-8 is provided with set screw nut 2-7, mandrel b2-5 is provided with the limited step c coordinated with set screw nut 2-7, and under the restriction of set screw nut 2-7, limited step c, Returnning spring 2-8 is in Pre strained state.When the instrument of going into operation 2 enters in oil well, often can encounter obstruction in folding process, the Returnning spring 2-8 being now in Pre strained state can also play buffer function to sheath 2-6.
Because the instrument of going into operation 2 often encounters obstruction in the process of movement, even occur that the situation that cannot exit oil well occurs, this is likely that leak-resistance valve 1 is out of order to reset and causes, also be likely because the miscellaneous part in oil well causes, in order to ensure that the instrument of going into operation 2 can exit oil well, the 2-2 that helps pull a cart is provided with between upper supporting positive cover 2-1 and mesh sleeve 2-4, the 2-2 that helps pull a cart is threaded with upper supporting positive cover 2-1, be connected by limited step a with mesh sleeve 2-4, help pull a cart when 2-2 is subject to overload pulling force with one section of thin segment and can rupture, when the 2-2 that helps pull a cart is pulled off, now mesh sleeve 2-4 loses top restriction, relatively can go up supporting positive cover 2-1 to move down, compressed by sheath 2-6, the reduced at mesh sleeve 2-4 boss place, obstruction can be eliminated to a certain extent, the instrument 2 that conveniently goes into operation exits.
For the instrument that goes into operation 2 that the 2-2 that helps pull a cart is pulled off, again can change the 2-2 that helps pull a cart and then come into operation.
In the present embodiment, stopping screw 2-10 is provided with between upper supporting positive cover 2-1 and mandrel b2-5, between lower supporting positive cover 2-9 and mandrel b2-5; Be provided with stopping screw 2-10 between set screw nut 2-7 and mesh sleeve 2-4 barrel, stopping screw 2-10 is all to strengthen linkage structure.
three, working principle
1. opening board valve events process:
Under enter switching tools as shown in figure 11, boss in the middle of switching tools overcoat coordinates with the lower end internal boss that jerk-finger compresses, engagement mandrel and mandrel a is driven to move down, now jerk-finger upper end is shifted out the locating slot a of landing nipple inside and compresses, when mandrel a is displaced downwardly to after intermediate channel ramp contacts with steel ball, steel ball drives lock pawl to move down, now the jerk-finger of lock pawl upper end shifts out the locating slot c of locking cylinder upper end and compresses, lock pawl is driven and moves down, thus drive valve seat and be arranged on the seal valve seat of valve seat inside and inside support ring moves down, after valve seat end face contacts with the boss of lower contact inside, steel ball hole now on lock pawl arrives the locating slot b in the middle part of locking cylinder, steel ball enters in groove by ramp effect, now mandrel a and lock pawl depart from, mandrel a continues to move down, after lower end touches valve plate, promote valve plate Unscrew, two torsion spring compressions of now valve plate being installed, mandrel a continues to move down, after mandrel a lower end contacts with valve seat internal boss, the locating slot a of the lower end arrival landing nipple interior lower end of jerk-finger compression is released, switching tools and jerk-finger depart from, now plate valve is opened completely, switching tools continues down through plate valve.
2, closing plate valve events process:
On carry switching tools, arrive after jerk-finger, the boss in the middle of switching tools overcoat coordinates with the upper end internal boss that jerk-finger compress, and drive is engaged on mandrel and mandrel a and moved, and after mandrel a leaves valve plate in lower end, valve plate is automatically closed under the effect of two torsion springs, switching tools is carried in continuation, after mandrel a upper end exterior boss contacts with the jerk-finger that lock pawl upper end is compressed, drive on 7 lock pawls and move, thus drive valve seat and be arranged on the seal valve seat of valve seat inside and inside support ring and move, the locating slot b that now steel ball deviates to lock cylinder inside enters in the containing groove in the middle part of mandrel, after seal valve seat sealing surface contacts with valve plate, also extruding rubber realizes initial sealing in right amount for the sealing surface of seal valve seat band rubber and valve plate Cylindrical Surfaces Contact, the jerk-finger of now lock pawl upper end compression arrives the locating slot c of locking cylinder inside and is released, lock pawl and mandrel a depart from, switching tools is carried in continuation, after jerk-finger arrives the locating slot a of inside, landing nipple upper end, the upper end of jerk-finger compression is released, enter locating slot a, switching tools and jerk-finger depart from, continuation is carried switching tools and leave the board-like leak-resistance valve of multiple switching, now plate valve cuts out completely.When running into fortuitous event, valve plate could not be completely self-styled under the effect of torsion spring, after valve seat contact valve plate, can promote valve plate rotary closing.
As need well workover or other need the board-like leak-resistance valve operation of opening and closing multiple switching time, repeat above-mentioned 1,2 course of action, fulfil assignment.
Described just in order to the utility model is described above, be construed as the utility model and be not limited to above embodiment, meet the various variants of the utility model thought all within protection domain of the present utility model.
Claims (1)
1. be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration, comprise valve body, valve body is combined by landing nipple, locking cylinder and lower contact from top to bottom successively, valve inner is provided with the tubulose mandrel a that can move back and forth along valve axis direction, and mandrel a drives realization to move back and forth by switching tools; It is characterized in that, described valve inner is provided with the valve plate and valve seat of working in coordination near lower end, and valve plate is arranged on supporting base and also arranges near the side of mandrel a, and described supporting base is fixed on valve interior wall, and valve seat can move back and forth along valve axis direction; When opening leak-resistance valve, mandrel a moves down, first promote valve seat by driving mechanism to move down, mandrel a continues promote valve plate lateral rotation when moving down the described valve plate of contact thus open leak-resistance valve, when closing leak-resistance valve, mandrel a moves, and described valve plate automatically resets under action of reset spring, and in mandrel a continuation, Mobile Communication crosses driving mechanism and drives valve seat moves and be pressed against valve plate thus close leak-resistance valve; The surface of contact of described valve plate and valve seat is cylndrical surface.
2. leak-resistance valve as claimed in claim 1, it is characterized in that, described mandrel a upper end is provided with some reed shape jerk-fingers, and is divided into laterally zygomorphic two groups, and every root jerk-finger end is provided with boss, and boss exceeds the upper and lower side of jerk-finger; Mandrel a tube wall is provided with the elongated hole of shape and described jerk-finger adaptation, form the deformation space of jerk-finger, valve interior wall is provided with the two sections of locating slot a coordinated with jerk-finger, the spacing of two sections of locating slot a is determined according to the displacement distance of mandrel a, and the boss of upper and lower two groups of jerk-fingers coordinates with described locating slot a thus limits the displacement distance of mandrel a.
3. leak-resistance valve as claimed in claim 2, it is characterized in that, described mandrel a upper end is connected with engagement mandrel, and described jerk-finger, elongated hole are all arranged on engagement mandrel, jerk-finger is removably fixed, and adopts thread seal to connect between engagement mandrel and mandrel a; Valve seat one section of body can be stretched in described mandrel a lower end.
4. leak-resistance valve as claimed in claim 1, it is characterized in that, described driving mechanism comprises and is arranged on lock pawl between mandrel a outer wall and valve interior wall and tubular base, lock pawl is reed shape and is provided with some, some lock pawls are fixed on same one end of tubular base, the other end of tubular base connects described valve seat, and every root lock pawl end is provided with boss, and boss exceeds the upper and lower side of lock pawl.
5. leak-resistance valve as claimed in claim 4, it is characterized in that, several open-works are provided with in the middle part of described tubular base, a steel ball is provided with in each open-work, valve interior wall is provided with the locating slot b coordinated with steel ball, mandrel a outer wall is provided with the containing groove coordinated with steel ball, when leak-resistance valve is in closed condition, steel ball is positioned at described containing groove, in mandrel a moving process, steel ball is driven then to drive tubular base to move by containing groove, depart from from containing groove when steel ball arrives locating slot b and enter locating slot b, mandrel a continues to move down and no longer drives tubular base.
6. leak-resistance valve as claimed in claim 4, be is characterized in that, described valve interior wall is provided with the locating slot c coordinated with lock pawl, mandrel a moves past in journey, limited the position of described lock pawl by this locating slot c.
7. leak-resistance valve as claimed in claim 1, it is characterized in that, described valve plate is fixed on supporting base by bearing pin, and described Returnning spring is made up of the torsion spring be set on bearing pin.
8. leak-resistance valve as claimed in claim 1, it is characterized in that, described valve seat is provided with inside support ring, inside support ring contacts with valve plate and seals, and surface of contact is cylndrical surface; Inside support ring is provided with seal ring, and shape and the inside support ring cylndrical surface port of seal ring are suitable.
9. leak-resistance valve as claimed in claim 1, is characterized in that, described landing nipple, adopts thread seal to connect between locking cylinder and lower contact, and joint is also provided with O RunddichtringO; O RunddichtringO is provided with between described valve seat and lower contact inwall.
10. the leak-resistance valve as described in any one of Claims 2 or 3, is characterized in that, the boss of described jerk-finger end and the fitting surface of locating slot a are all arranged to inclined-plane.
11. leak-resistance valves as claimed in claim 5, is characterized in that, the containing groove on described locating slot b, mandrel a outer wall and the fitting surface of steel ball are all arranged to inclined-plane.
12. leak-resistance valves as claimed in claim 6, is characterized in that, the boss of described lock pawl end and the fitting surface of locating slot c are all arranged to inclined-plane.
13. leak-resistance valves as claimed in claim 2, it is characterized in that, described switching tools comprises supporting positive cover, mesh sleeve and lower supporting positive cover, and mesh sleeve inside is provided with tubulose mandrel b, mandrel b is threaded with upper supporting positive cover and lower supporting positive cover; With several partitioning slot on the barrel of described mesh sleeve, boss is provided with in the middle part of barrel, match with the boss of described jerk-finger, the outer one end near lower supporting positive cover of described mesh sleeve is coated with sheath, sheath moves boss in the middle part of extruding mesh sleeve can compress it thus reduce the external diameter of boss place mesh sleeve, described sheath inside be provided with Returnning spring.
14. leak-resistance valves as claimed in claim 13, is characterized in that, be provided with and help pull a cart between described upper supporting positive cover and mesh sleeve, help pull a cart to be threaded with upper supporting positive cover, are connected by limited step a with mesh sleeve; Help pull a cart when being subject to overload pulling force with one section of thin segment and can rupture.
15. leak-resistance valves as claimed in claim 13, it is characterized in that, described sheath is arranged to inclined-plane near one end outer tube wall of lower supporting positive cover, and this end jacket inner wall is provided with limited step b, Returnning spring is set on mandrel b, is arranged between mesh sleeve end and limited step b; Described sheath barrel is provided with the open-work that several can discharge internal liquid.
16. leak-resistance valves as claimed in claim 15, it is characterized in that, one end that described mesh sleeve coordinates with Returnning spring is provided with set screw nut, described mandrel b is provided with the limited step c coordinated with set screw nut, under the restriction of set screw nut, limited step c, Returnning spring is in Pre strained state.
17. leak-resistance valves as claimed in claim 13, it is characterized in that, partitioning slot on described mesh sleeve barrel extends to mesh sleeve one end near upper supporting positive cover, and this end is provided with fixed cover restriction barrel and opens, fixed cover is connected by limited step d with barrel.
18. leak-resistance valves as described in claim 13 or 16, is characterized in that, between described upper supporting positive cover and mandrel b, be provided with stopping screw between lower supporting positive cover and mandrel b; Stopping screw is provided with between described set screw nut and mesh sleeve barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420458389.XU CN204267751U (en) | 2014-08-14 | 2014-08-14 | Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420458389.XU CN204267751U (en) | 2014-08-14 | 2014-08-14 | Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267751U true CN204267751U (en) | 2015-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420458389.XU Withdrawn - After Issue CN204267751U (en) | 2014-08-14 | 2014-08-14 | Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration |
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| Country | Link |
|---|---|
| CN (1) | CN204267751U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154248A (en) * | 2014-08-14 | 2014-11-19 | 中科金佳（北京）油田技术开发有限公司 | Repeatedly opened and closed anti-leakage valve with cylindrical panel valve sealing structure |
| CN107130939A (en) * | 2017-07-17 | 2017-09-05 | 东营市瑞丰石油技术发展有限责任公司 | Opened by pressure formula leak-resistance valve and switching device |
| CN110005362A (en) * | 2019-04-18 | 2019-07-12 | 江苏新彩阳机电技术有限公司 | A kind of manual spraying prevention switch valve in underground |
-
2014
- 2014-08-14 CN CN201420458389.XU patent/CN204267751U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154248A (en) * | 2014-08-14 | 2014-11-19 | 中科金佳（北京）油田技术开发有限公司 | Repeatedly opened and closed anti-leakage valve with cylindrical panel valve sealing structure |
| CN104154248B (en) * | 2014-08-14 | 2016-04-06 | 中科金佳（北京）油田技术开发有限公司 | Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration |
| CN107130939A (en) * | 2017-07-17 | 2017-09-05 | 东营市瑞丰石油技术发展有限责任公司 | Opened by pressure formula leak-resistance valve and switching device |
| CN110005362A (en) * | 2019-04-18 | 2019-07-12 | 江苏新彩阳机电技术有限公司 | A kind of manual spraying prevention switch valve in underground |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150415 Effective date of abandoning: 20160406 |
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