CN204420171U - Two way sealed valve seat construction and ultralow temperature fill formula fixing ball valve - Google Patents
Two way sealed valve seat construction and ultralow temperature fill formula fixing ball valve Download PDFInfo
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- CN204420171U CN204420171U CN201420830346.XU CN201420830346U CN204420171U CN 204420171 U CN204420171 U CN 204420171U CN 201420830346 U CN201420830346 U CN 201420830346U CN 204420171 U CN204420171 U CN 204420171U
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Abstract
The utility model discloses on a kind of two way sealed valve seat construction and ultralow temperature and fill formula fixing ball valve.The utility model provides on a kind of ultralow temperature that can arrange pressure release direction when mounted and fills formula fixing ball valve, comprises valve body, and described valve body comprises valve pocket, is positioned at two joints at valve pocket two ends, and two joints are called the first joint and the second joint; First joint is provided with one-way sealing valve seat construction towards one end of valve pocket; Second joint is provided with aforesaid two way sealed valve seat construction towards one end of valve pocket, described spring support is arranged on the second joint, the cooperation section of described two way sealed valve seat construction is inserted in the second joint, described piston ring to coordinate between the outer shroud of section and the inner ring of the second joint and can axial motion, the inner ring of described second joint is provided with can with the limited ring of piston ring snug fit, between the spacing fitting surface in bracing ring valve pocket section of axial motion of described piston ring and limited ring.
Description
Technical field
The utility model relates to a kind of seal valve seat structure, especially a kind of two way sealed valve seat construction.In addition, the utility model also relates to a kind of ball valve, and especially a kind of ultralow temperature fills formula fixing ball valve.
Background technique
Under ultralow-temperature operation conditions, the volume of medium is concentrated, such as: liquid nitrogen, LNG etc.But in abnormal cases, if the temperature of valve rises, the medium in valve cavity can be made to gasify, thus cause the pressure anomaly in valve pocket to raise.So, just the valve pocket of valve is necessarily required to have self-relieving ability.
At present, sealing means ultralow temperature filling the realization of formula fixing ball valve is as follows:
(1) sealing between valve body and valve seat bracing ring, the lip-type packing contrary by two installation directions has come;
(2), between valve seat and spheroid, act on the piston effect on valve seat bracing ring by pressure medium, make valve seat be close to spheroid to realize sealing;
(3) in current design generally, the sealing configuration of valve as shown in Figure 10, Figure 11.
For top dress ball valve, valve be equipped with oneself special requirement:
(1) when assembling valve, first the valve seat bracing ring at two ends and valve seat should be assembled to corresponding position, hole place in valve body, and make the bulk between two valve seats be greater than size between the both ends of the surface of ball valve runner hole;
(2) after sphere installation being put in place, by rotary valve base bracing ring nut, adjustment preloading spring to suitable decrement, and makes valve seat be in good state with coordinating of spheroid.And when rotary valve base bracing ring nut, must prevent valve seat bracing ring from rotating.The current mode preventing valve seat bracing ring from rotating generally as shown in Figure 12 and Figure 13.
From Figure 10, Figure 11, Figure 12, Figure 13, current general valve concrete structure feature is as follows:
(1) the upstream extremity valve seat of valve and downstream valve seat construction just the same, be one-way sealing valve seat (or being called single piston effect valve seat);
(2) the valve seat bracing ring anti-rotation mode of valve is: drive guiding groove in the rear end of valve seat bracing ring, and located with pin.After adjusting, from valve outside, pin and valve body are welded.
But, there is following problem in the valve of this structure:
(1) because upstream pressure is always greater than downstream pressure, when valve pocket internal pressure increases, what first push open is the one-way sealing valve seat in downstream, thus the direction of releasing of pressure in valve pocket is towards the downstream canal of valve forever.And on LNG pipeline, according to the requirement of design technology bag, often require that the pressure release direction of valve pocket is towards the upstream line of valve, so the use of this structure valve can be subject to the restriction in valve pocket pressure release direction;
(2) for valve component when preventing rotating valve seat supports ring nut follows rotation, have employed four guide positioning pins, and after adjusting, guide positioning pin is welded.Do like this, four leak sources that made valve many, once welding quality has problem, valve can be caused to produce and leak outside.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of two way sealed valve seat construction that can realize two way sealed.
The utility model solves the two way sealed valve seat construction that its technical problem adopts, comprise bracing ring, valve seat and spring support, described bracing ring is divided into valve pocket section and coordinates section, described valve seat is arranged on valve pocket section towards on the end face of valve pocket, described spring support is arranged on the end face of valve pocket section valve pocket dorsad, also comprise piston ring, described piston ring packing is set in and coordinates in section and can along the axial motion of bracing ring, the end face of described valve pocket section valve pocket is dorsad provided with can with the fitting surface of piston ring snug fit; The annular diameters of described valve seat is greater than the outer annular diameter of bracing ring cooperation section.Spring support generally adopts spring to form, and also can be other elastic material, valve seat be identical with traditional valve seat.
Further, described bracing ring is circumferentially provided with some locating studs, the axis being parallel of described locating stud and bracing ring, described piston ring is provided with the some positioning holes matched with locating stud, described positioning hole is movably arranged on locating stud.
Further, the inner ring of described piston ring and outer shroud are provided with seal ring.
Further, described piston ring comprises piston body and two end caps, and two described end caps are arranged on the two ends of piston body respectively, and described seal ring is arranged between end cap and piston body.
Be further, described bracing ring also comprises adjusting nut ring, and the outer shroud of described valve pocket section is provided with outside thread, and the inner ring of described adjusting nut ring is provided with internal thread, described adjusting nut ring is arranged on the outer shroud of valve pocket section by screw thread, described adjusting nut ring is pressed on spring support.
Another technical problem that will solve of the utility model is to provide on a kind of ultralow temperature that can arrange pressure release direction when mounted and fills formula fixing ball valve.
The ultralow temperature that the utility model provides fills formula fixing ball valve, comprises valve body, described valve body comprises valve pocket, is positioned at two joints at valve pocket two ends, and two joints are called the first joint and the second joint; First joint is provided with one-way sealing valve seat construction towards one end of valve pocket; Second joint is provided with aforesaid two way sealed valve seat construction towards one end of valve pocket, described spring support is arranged on the second joint, the cooperation section of described two way sealed valve seat construction is inserted in the second joint, described piston ring to coordinate between the outer shroud of section and the inner ring of the second joint and can axial motion, the inner ring of described second joint is provided with can with the limited ring of piston ring snug fit, between the spacing fitting surface in bracing ring valve pocket section of axial motion of described piston ring and limited ring.
Be further, described one-way sealing valve seat construction comprises unidirectional bracing ring, one-way valve seat and unidirectional spring support, described unidirectional bracing ring has head and afterbody, described one-way valve seat is arranged on head towards on the end face of valve pocket, described unidirectional spring support is arranged on the end face of head valve pocket dorsad, described unidirectional spring support is arranged on the first joint, and described afterbody to insert in the first joint and is sealed and matched with the first joint.
Further, also comprise anti-rotation device, described anti-rotation device comprises retaining ring and fixing pin, and described fixing pin is provided with several, and is arranged circumferentially along retaining ring, and described retaining ring is fixedly mounted on the second joint inwall; The end face of described piston ring valve pocket is dorsad provided with the mounting hole mated with fixing pin, and the mounting hole of described piston ring is movably arranged on fixing pin.Retaining ring and limited ring can be same parts, if same parts, are then directly arranged on the second joint inwall; If different parts, be then arranged on retaining ring on limited ring.
Further, also comprise anti-rotation device, described anti-rotation device comprises retaining ring and fixing pin, and described fixing pin is provided with several, and is arranged circumferentially along retaining ring, described retaining ring to be fixedly mounted on the first joint inwall and fixing pin towards in valve pocket; Described one-way sealing valve seat construction is provided with the hole of mating with fixing pin, and the hole of described one-way sealing valve seat construction is movably arranged on fixing pin.
Be further, the sealing configuration that described sealing uses all is realized by lip-type packing and elastic ring, the sealed end of described lip-type packing is provided with U-shaped opening, U-shaped opening towards parallel with the axial direction of lip-type packing, described elastic ring is embedded in described U-shaped opening.
The beneficial effects of the utility model are: this two way sealed valve seat construction utilizes the existence of piston ring, no matter make to be the pressure in valve pocket, or the pressure in runner, all play effect valve seat and bracing ring being pushed to spheroid, and obtain the effect of two way sealed.When two way sealed valve seat construction is applied to ultralow temperature fills formula fixing ball valve time, two way sealed valve seat construction and one-way sealing valve seat construction cooperatively interact, by selecting two way sealed valve seat construction and upstream extremity or downstream Matching installation, the direction of pressure release just can be controlled.Therefore, same deck valve door, both can meet when valve pocket pressure superpressure, to the requirement of valve downstream end pipeline pressure release, also can meet the requirement to valve downstream end pipeline pressure release.When valve installation, when two way sealed valve component is in the upstream extremity of valve, during pressure superpressure in valve pocket, the downstream pipeline from trend valve is released; If valve is rotated 180 ° of installations, allow two way sealed valve component be in the downstream of valve, now, during pressure superpressure in valve pocket, the upstream extremity pipeline from trend valve is released.That is, the valve of same project organization, when can meet valve utilization, different installation requirements.Meanwhile, the anti-rotation device of the valve component of the valve of the design is built-in, makes the body wall of valve body does not have too much cavity, therefore, effectively can reduce the possibility of valve leakage out of steam system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model when upstream pressure release;
Fig. 2 is the schematic diagram of the utility model when downstream pressure release;
Fig. 3 is the I place enlarged view of Fig. 1 when valve pocket has pressure;
Fig. 4 is the C place enlarged view of Fig. 1 when runner has pressure;
Fig. 5 is the schematic diagram of one-way sealing valve seat construction;
Fig. 6 is the schematic diagram of piston ring;
Fig. 7 is the schematic diagram of anti-rotation device;
Fig. 8 is the schematic diagram of the another kind of mode of execution of anti-rotation device;
Fig. 9 is the schematic diagram of lip-type packing and elastic ring;
Figure 10 is the ball valve schematic diagram of prior art;
Figure 11 is the C place enlarged view of Figure 10;
Figure 12 is the valve component rotation prevention structure schematic diagram of prior art; .
Figure 13 is the D place enlarged view of Figure 12;
Figure 14 is that valve pocket has pressure P 1, two way sealed valve seat construction schematic diagram when flowpath pressure P2 is 0;
Figure 15 is that valve pocket has pressure P 1 to be 0, and runner has two way sealed valve seat construction schematic diagram during pressure P 2;
Figure 16 is the two way sealed valve seat construction schematic diagram of valve pocket when having pressure P 1 to equal flowpath pressure P2;
Figure 17 is the two way sealed valve seat construction schematic diagram of valve pocket when having pressure P 1 to be greater than flowpath pressure P2;
Figure 18 is the two way sealed valve seat construction schematic diagram of valve pocket when having pressure P 1 to be less than flowpath pressure P2;
Component, position and numbering in figure: valve body 1, valve pocket 2, spheroid 3, two way sealed valve seat construction 4, bracing ring 41, valve seat 42, piston ring 43, piston body 431, end cap 432, spring support 44, adjusting nut ring 45, locating stud 46, one-way sealing valve seat construction 5, unidirectional bracing ring 51, one-way valve seat 52, unidirectional spring support 53, second joint 6, first joint 7, anti-rotation device 8, retaining ring 81, fixing pin 82, sealing configuration 9, lip-type packing 91, elastic ring 92.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises valve body 1, and described valve body 1 comprises valve pocket 2, is positioned at two joints at valve pocket 2 two ends, and two joints are called the first joint 7 and the second joint 6, first joint 7 is provided with one-way sealing valve seat construction 5 towards one end of valve pocket 2, the feature of one-way sealing valve seat construction 5 is, when in valve pocket, 2 pressure are excessive, just can overcome the elastic force of one-way sealing valve seat construction 5, thus make seal failure, reaching the object of pressure release, is that in prior art, ball valve generally adopts, second joint 6 is provided with two way sealed valve seat construction 4 towards one end of valve pocket 2, two way sealed valve seat construction 4 comprises bracing ring 41, valve seat 42 and spring support 44, described bracing ring 41 is divided into valve pocket section and coordinates section, described valve seat 42 is arranged on valve pocket section towards on the end face of valve pocket 2, described spring support 44 is arranged on the end face of valve pocket section valve pocket 2 dorsad, also comprise piston ring 43, described piston ring 43 stuffing box gland is located at also can along the axial motion of bracing ring 41 in cooperation section, the end face of described valve pocket section valve pocket 2 is dorsad provided with can with the fitting surface of piston ring 43 snug fit, the annular diameters of described valve seat 42 is greater than the outer annular diameter of bracing ring 41 section of cooperation, described spring support 44 is arranged on the second joint 6, the cooperation section of described two way sealed valve seat construction 3 is inserted in the second joint 6, described piston ring 43 to coordinate between the outer shroud of section and the inner ring of the second joint 6 and can axial motion, the inner ring of described second joint 6 is provided with can with the limited ring of piston ring 43 snug fit, between the spacing fitting surface in bracing ring 41 valve pocket section of axial motion of described piston ring 43 and limited ring.
Two way sealed valve seat construction 4 place different from traditional one-way sealing valve seat construction 5 is, two way sealed valve seat construction 4 have employed piston ring 43, and its concrete working principle is as follows:
When valve pocket 2 internal pressure is larger, as shown in Figure 3, pressure in valve pocket 2 promotes piston ring 43 to the one end away from valve pocket, piston ring 43 is made to be adjacent on the limited ring of the second joint 6, the space formed after now piston ring 43 displacement introduces the pressure in valve pocket 2, and this space is just in time positioned on the end face of bracing ring 41 valve pocket section valve pocket 2 dorsad, namely now bracing ring 41 valve pocket section is all subject to valve pocket 2 internal pressure towards the end face of valve pocket 2 and the end face of valve pocket 2 dorsad, due to the seal action of valve seat 42, and the annular diameters of valve seat 42 is greater than the outer annular diameter of bracing ring 41 section of cooperation, therefore the compression area of the bracing ring 41 valve pocket section end face of valve pocket 2 is dorsad greater than towards the compression area of the end face of valve pocket 2, namely bracing ring 41 is subject to all the time towards the active force of valve pocket.
When flowpath pressure is greater than valve pocket 2 pressure, as shown in Figure 4, pressure in runner promotes piston ring 43 to one end of close valve pocket and is adjacent to the fitting surface of bracing ring 41 valve pocket section, one end of piston ring 43 valve pocket 2 dorsad is subject to flowpath pressure, thus together act on bracing ring 41 with spring support 44, thus make bracing ring 41 promote valve seat 42 to seal up spheroid 3.
The principle that above-mentioned analysis just simply describes roughly, in fact, active force, lifting surface area difference suffered by the situation lower support circle 41 that valve pocket 2 pressure P 1 is different with flowpath pressure P2, the analysis that specifically can see below.
5 kinds of working conditions of two way sealed valve seat construction 4 are specifically introduced below in conjunction with accompanying drawing 14 to accompanying drawing 18:
Conveniently show principle, accompanying drawing 14 to accompanying drawing 18 does not do reference character, and the mark of its each parts can see shown in Fig. 3 and Fig. 4.
When valve pocket 2 has pressure P 1, flowpath pressure P2 is 0, when the thrust of spring support 44 is T, i.e. situation as shown in figure 14, now before and after bracing ring 41, compression face product moment is S1, and the thrust direction that now valve seat 42 is subject to is towards valve pocket, thrust size F=P1 × S1+T that valve seat 42 is subject to.
As valve pocket 2 pressure P 1=0, runner has pressure P 2, when the thrust of spring support 44 is T, i.e. situation as shown in figure 15, now before and after bracing ring 41, compression face product moment is S2, and the thrust direction that now valve seat 42 is subject to is towards valve pocket, thrust size F=P2 × S2+T that valve seat 42 is subject to.
When valve pocket 2 pressure P 1 equals flowpath pressure P2, when the thrust of spring support 44 is T, i.e. situation as shown in figure 16, now before and after bracing ring 41, compression face product moment is S3, the thrust direction that now valve seat 42 is subject to is towards valve pocket, thrust size F=P2 × S3+T that valve seat 42 is subject to.
When valve pocket 2 pressure P 1 is greater than flowpath pressure P2, when the thrust of spring support 44 is T, i.e. situation as shown in figure 17, now before and after bracing ring 41, compression face product moment is S4 and S5, the thrust direction that now valve seat 42 is subject to is towards valve pocket, thrust size F=P1 × S4+ (P1-P2) × S5+T that valve seat 42 is subject to.
When valve pocket 2 pressure P 1 is less than flowpath pressure P2, when the thrust of spring support 44 is T, i.e. situation as shown in figure 18, now before and after bracing ring 41, compression face product moment is S6 and S7, the thrust direction that now valve seat 42 is subject to is towards valve pocket, thrust size F=P2 × S7+ (P2-P1) × S6+T that valve seat 42 is subject to.
From above-mentioned working principle, no matter two way sealed valve seat construction 4 is that valve pocket 2 pressure is higher or flowpath pressure is higher, all can keep sealing state; When valve pocket 2 internal pressure is too high, pressure can only release from one-way sealing valve seat construction 5; This can only release different from traditional ball valve from downstream.
The utility model is as follows in operation instruction: when the pressure release of needs upstream, as shown in Figure 1, and the second joint 6 of the present utility model is arranged on downstream, and the first joint 7 is arranged on upstream extremity; Otherwise when the pressure release of needs downstream, as shown in Figure 2, the second joint 6 is arranged on upstream extremity, the first joint 7 is arranged on downstream.
In order to the motion of better guide piston ring 43, as shown in Figure 3 and Figure 4, described bracing ring 41 is circumferentially provided with some locating studs 46, locating stud 46 should be evenly distributed usually, the axis being parallel of described locating stud 46 and bracing ring 41, described piston ring 43 is provided with the some positioning holes matched with locating stud 46, described positioning hole is movably arranged on locating stud 46.Utilize locating stud 46 to lead for piston ring 43, piston ring 43 can be made to move more regular, working life increases.
Concrete, as shown in Figure 6, inner ring and the outer shroud of described piston ring 43 are provided with seal ring.Piston ring 43 needs to keep apart valve pocket 2 and runner, utilizes the sealing of seal ring to realize.
Concrete, as shown in Figure 6, described piston ring 43 comprises the two ends that piston body 431 and two end caps, 432, two described end caps 432 are arranged on piston body 431 respectively, and described seal ring is arranged between end cap 432 and piston body 431.End cap 432 can well fixed seal ring, and this structure can keep the reliability of seal ring in piston ring 43 long-term motion.
For the ease of adjustable elastic seat 44, as shown in Figure 3 and Figure 4, described bracing ring 41 also comprises adjusting nut ring 45, the outer shroud of described valve pocket section is provided with outside thread, the inner ring of described adjusting nut ring 45 is provided with internal thread, described adjusting nut ring 45 is arranged on the outer shroud of valve pocket section by screw thread, described spring support 44 is arranged on adjusting nut ring 45.The pretightening force of spring support 44 and mounting point need according to circumstances to regulate, and now, can be controlled the position of spring support 44 by the rotation of nut ring 45, thus obtain the pretightening force and mounting point that need.
Concrete, as shown in Figure 5, described one-way sealing valve seat construction 5 comprises unidirectional bracing ring 51, one-way valve seat 52 and unidirectional spring support 53, these parts just in order to show that it is the component part of one-way sealing valve seat construction 5 titled with unidirectional adjective, do not represent these parts and are used alone and can reach unidirectional object; Described unidirectional bracing ring 51 has head and afterbody, described one-way valve seat 52 is arranged on head towards on the end face of valve pocket 2, described unidirectional spring support 53 is arranged on the end face of head valve pocket 2 dorsad, described unidirectional spring support 53 is arranged on the first joint 7, and described afterbody to insert in the first joint 7 and is sealed and matched with the first joint 7.One-way sealing valve seat construction 5 utilizes the pretightening force of pressure reduction and unidirectional spring support 53 to realize sealing, and when flowpath pressure adds that the pretightening force of unidirectional spring support 53 is greater than valve pocket 2 pressure, one-way valve seat 52 is energy sealed spheroid 3 just; If when flowpath pressure adds that the pretightening force of unidirectional spring support 53 is less than valve pocket 2 pressure, the pressure in valve pocket 2 will push unidirectional bracing ring 51 open, thus makes the seal failure of one-way valve seat 52.
In order to reduce the damage to valve body 1 body wall, as Fig. 3 and Fig. 4, shown in, also comprise anti-rotation device 8, described anti-rotation device 8 comprises retaining ring 81 and fixing pin 82, and described fixing pin 82 is provided with several, and be arranged circumferentially along retaining ring 81, described retaining ring 81 is fixedly mounted on the second joint 6 inwall; The end face of described piston ring 43 valve pocket 2 is dorsad provided with the mounting hole mated with fixing pin 82, and the mounting hole of described piston ring 43 is movably arranged on fixing pin 82.Utilize the installation of retaining ring 81, perforate on valve body 1 body wall can be avoided to establish pin, the damage to valve body 1 can be avoided.Fixing pin 82 by the rotation of limited piston ring 43, thus limits the rotation of whole two way sealed valve seat construction 3.
Anti-rotation device 8 can also apply on one-way sealing valve seat construction, described retaining ring 81 to be fixedly mounted on the first joint 6 inwall and fixing pin 82 towards in valve pocket 2; Described one-way sealing valve seat construction 5 is provided with the hole of mating with fixing pin 82, the hole of described one-way sealing valve seat construction 5 is movably arranged on fixing pin 82.
Anti-rotation device 8 has multiple implementation, Fig. 7 and Fig. 8 respectively show a kind of mode, and the retaining ring 81 of the anti-rotation device 8 of Fig. 8 has a shirt rim, is convenient to guiding.
In the accompanying drawings, the anti-rotation device applying to one-way sealing valve seat construction is labeled as 8b, and the anti-rotation device applying to two way sealed valve seat construction is labeled as 8a.
In order to obtain reliable sealing effect, as shown in Figure 9, the sealing configuration 9 that described sealing uses all is realized by lip-type packing 91 and elastic ring 92, the sealed end of described lip-type packing 91 is provided with U-shaped opening, U-shaped opening towards parallel with the axial direction of lip-type packing 91, namely U-shaped opening is horizontal, and described elastic ring 92 is embedded in described U-shaped opening.Elastic ring 92 be preferably metal steel strap spiral close around ring-spring.
Sealing configuration 9 is when applying to two way sealed valve seat construction 4, namely for piston ring 43, be sandwiched in by sealing configuration 9 between piston body 431 and end cap 432, one group of sealing configuration 9 can arrange two, the back-to-back setting of lip-type packing 91 of two sealing configurations 9, end cap 432 is suitably utilized to apply pressure, elastic ring 92 width direction shrinks, and short transverse diameter increases, thus makes the U-shaped opening of lip-type packing 91 softened, expand in short transverse, reach good sealing effect.
In view of the utility model applies to ultra-low temperature surroundings, the rubber material therefore involved by the utility model, engineering plastics all need the temperature bearing-196 DEG C.
Claims (10)
1. two way sealed valve seat construction, comprise bracing ring (41), valve seat (42) and spring support (44), described bracing ring (41) is divided into valve pocket section and coordinates section, described valve seat (42) is arranged on valve pocket section towards on the end face of valve pocket (2), described spring support (44) is arranged on the end face of valve pocket section valve pocket (2) dorsad, it is characterized in that: also comprise piston ring (43), described piston ring (43) stuffing box gland is located at also can along the axial motion of bracing ring (41) in cooperation section, the end face of described valve pocket section valve pocket (2) is dorsad provided with can with the fitting surface of piston ring (43) snug fit, the annular diameters of described valve seat (42) is greater than the outer annular diameter of bracing ring (41) cooperation section.
2. two way sealed valve seat construction as claimed in claim 1, it is characterized in that: described bracing ring (41) is circumferentially provided with some locating studs (46), the axis being parallel of described locating stud (46) and bracing ring (41), described piston ring (43) is provided with the some positioning holes matched with locating stud (46), described positioning hole is movably arranged on locating stud (46).
3. two way sealed valve seat construction as claimed in claim 1, is characterized in that: inner ring and the outer shroud of described piston ring (43) are provided with seal ring.
4. two way sealed valve seat construction as claimed in claim 3, it is characterized in that: described piston ring (43) comprises piston body (431) and two end caps (432), two described end caps (432) are arranged on the two ends of piston body (431) respectively, and described seal ring is arranged between end cap (432) and piston body (431).
5. the two way sealed valve seat construction as described in claim as arbitrary in Claims 1-4, it is characterized in that: described bracing ring (41) also comprises adjusting nut ring (45), the outer shroud of described valve pocket section is provided with outside thread, the inner ring of described adjusting nut ring (45) is provided with internal thread, described adjusting nut ring (45) is arranged on the outer shroud of valve pocket section by screw thread, described adjusting nut ring (45) is pressed on spring support (44).
6. ultralow temperature fills formula fixing ball valve, comprise valve body (1), described valve body (1) comprises valve pocket (2), is positioned at two joints at valve pocket (2) two ends, and two joints are called the first joint (7) and the second joint (6), first joint (7) is provided with one-way sealing valve seat construction (5) towards one end of valve pocket (2), it is characterized in that: the second joint (6) is provided with the two way sealed valve seat construction (3) as described in claim as arbitrary in claim 1 to 5 towards one end of valve pocket (2), described spring support (44) is arranged on the second joint (6), the cooperation section of described two way sealed valve seat construction (3) is inserted in the second joint (6), described piston ring (43) is positioned at and coordinates between the outer shroud of section and the inner ring of the second joint (6) and can axial motion, the inner ring of described second joint (6) is provided with can with the limited ring of piston ring (43) snug fit, between the spacing fitting surface in bracing ring (41) valve pocket section of axial motion of described piston ring (43) and limited ring.
7. ultralow temperature as claimed in claim 6 fills formula fixing ball valve, it is characterized in that: described one-way sealing valve seat construction (5) comprises unidirectional bracing ring (51), one-way valve seat (52) and unidirectional spring support (53), described unidirectional bracing ring (51) has head and afterbody, described one-way valve seat (52) is arranged on head towards on the end face of valve pocket (2), described unidirectional spring support (53) is arranged on the end face of head valve pocket (2) dorsad, described unidirectional spring support (53) is arranged on the first joint (7), described afterbody to insert in the first joint (7) and is sealed and matched with the first joint (7).
8. ultralow temperature as claimed in claims 6 or 7 fills formula fixing ball valve, it is characterized in that: also comprise anti-rotation device (8), described anti-rotation device (8) comprises retaining ring (81) and fixing pin (82), described fixing pin (82) is provided with several, and be arranged circumferentially along retaining ring (81), described retaining ring (81) is fixedly mounted on the second joint (6) inwall; The end face of described piston ring (43) valve pocket (2) is dorsad provided with the mounting hole mated with fixing pin (82), and the mounting hole of described piston ring (43) is movably arranged on fixing pin (82).
9. ultralow temperature as claimed in claims 6 or 7 fills formula fixing ball valve, it is characterized in that: also comprise anti-rotation device (8), described anti-rotation device (8) comprises retaining ring (81) and fixing pin (82), described fixing pin (82) is provided with several, and be arranged circumferentially along retaining ring (81), described retaining ring (81) to be fixedly mounted on the first joint (6) inwall and fixing pin (82) towards in valve pocket (2); Described one-way sealing valve seat construction (5) is provided with the hole of mating with fixing pin (82), the hole of described one-way sealing valve seat construction (5) is movably arranged on fixing pin (82).
10. ultralow temperature as claimed in claim 7 fills formula fixing ball valve, it is characterized in that: the sealing configuration (9) that described sealing uses all is realized by lip-type packing (91) and elastic ring (92), the sealed end of described lip-type packing (91) is provided with U-shaped opening, U-shaped opening towards parallel with the axial direction of lip-type packing (91), described elastic ring (92) is embedded in described U-shaped opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830346.XU CN204420171U (en) | 2014-12-24 | 2014-12-24 | Two way sealed valve seat construction and ultralow temperature fill formula fixing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830346.XU CN204420171U (en) | 2014-12-24 | 2014-12-24 | Two way sealed valve seat construction and ultralow temperature fill formula fixing ball valve |
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|---|---|
| CN204420171U true CN204420171U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420830346.XU Withdrawn - After Issue CN204420171U (en) | 2014-12-24 | 2014-12-24 | Two way sealed valve seat construction and ultralow temperature fill formula fixing ball valve |
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| CN (1) | CN204420171U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482244A (en) * | 2014-12-24 | 2015-04-01 | 四川精控阀门制造有限公司 | Bidirectional sealing valve seat structure and ultralow temperature top-assembled fixed ball valve |
| IT202000019447A1 (en) * | 2020-08-06 | 2022-02-06 | A V V Added Value For Valves S R L | TRUNNION BALL VALVE AND RELATED CONSTRUCTION OR REPLACEMENT KITS |
| US11448321B2 (en) | 2018-08-03 | 2022-09-20 | Saint-Gobain Performance Plastics Corporation | Ball valve seal |
-
2014
- 2014-12-24 CN CN201420830346.XU patent/CN204420171U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482244A (en) * | 2014-12-24 | 2015-04-01 | 四川精控阀门制造有限公司 | Bidirectional sealing valve seat structure and ultralow temperature top-assembled fixed ball valve |
| CN104482244B (en) * | 2014-12-24 | 2017-11-21 | 四川精控阀门制造有限公司 | Formula fixing ball valve is filled on two way seal valve seat construction and ultralow temperature |
| US11448321B2 (en) | 2018-08-03 | 2022-09-20 | Saint-Gobain Performance Plastics Corporation | Ball valve seal |
| IT202000019447A1 (en) * | 2020-08-06 | 2022-02-06 | A V V Added Value For Valves S R L | TRUNNION BALL VALVE AND RELATED CONSTRUCTION OR REPLACEMENT KITS |
| WO2022029818A1 (en) * | 2020-08-06 | 2022-02-10 | A.V.V. Added Value For Valves S.R.L. | Trunnion ball valve and related equipment or spare kit |
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