CN206130168U - Sealed ball valve of upper assembling type high pressure helium - Google Patents
Sealed ball valve of upper assembling type high pressure helium Download PDFInfo
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- CN206130168U CN206130168U CN201621026044.2U CN201621026044U CN206130168U CN 206130168 U CN206130168 U CN 206130168U CN 201621026044 U CN201621026044 U CN 201621026044U CN 206130168 U CN206130168 U CN 206130168U
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Abstract
The utility model discloses a sealed ball valve of upper assembling type high pressure helium, relate to valve technical field, it includes the valve body and locates the valve gap on the valve body, be equipped with the valve ball in the valve body, the valve ball is connected with a valve rod, be equipped with in the valve body and be used for the air flue that is linked together with blowback filter pipe way, the valve body is close to valve ball one end and is equipped with a step, step department is equipped with a dish spring lock ring, dish spring lock ring is close to and forms a clearance between terminal surface and the step of step, be equipped with a dish spring in the clearance, the clearance is linked together with the air flue, the orientation of terminal surface is suitable for and makes a dish spring lock ring have the movement tendency to the valve ball direction when the terminal surface receives helium atmospheric pressure, be equipped with at least one O type sealing washer between dish spring lock ring's circumference surface and the valve body, be equipped with the disk seat between a dish spring lock ring and the valve ball, and the seat material is elastic material. The utility model has the characteristics of leakproofness and fail safe nature are high, be particularly suitable for using under medium belt such as high -pressure helium have the operational environment of radiation.
Description
Technical field
This utility model is related to valve technology field, and in particular to formula high-pressure helium seal ball-valve is filled in one kind.
Background technology
The characteristics of there are ball valve simple structure, sealed reliable, Operation and maintenance to facilitate, obtains wide in modern industry field
General application.Ordinary ball valve is commonly used to the not high occasion of room temperature, low pressure and sealing requirements, but with modern crafts skill
Art and the continuous development of material industry, the structure of ball valve is continued to optimize and improved, various to meet various requirement of actual working condition
The ball valve of new structure is widely used in electric power, petrochemical industry, metallurgical steel-making, water process, day because of its excellent performance
So the field such as gas exploitation and offshore platform, is used to play important function on the pipeline of process control at these.It is special at some
Application, such as in the fuel handling system power back-blowing filter pipeline in HTGR Nuclear Power Plant, pipeline medium is height
Pressure helium, it carries radiation, needs the on-off function for using ball valve to perform pipeline mesohigh helium, realizes the control to high-pressure helium
System, but the sealing and security reliability of existing ball valve cannot meet requirement.
Utility model content
For defect present in prior art, the purpose of this utility model is that dress formula high pressure helium is airtight in offer one kind
Blocking valve, its sealing and security reliability are high, are particularly suitable for being made under working environment of the media such as high-pressure helium with radiation
With.
To reach object above, this utility model is adopted the technical scheme that：
Formula high-pressure helium seal ball-valve, the fuel handling system blowback that it is used in HTGR Nuclear Power Plant are filled in one kind
The break-make of helium in filter pipeline, it includes valve body and the valve gap being covered on the valve body, in the valve body valve ball is provided with,
The valve ball is connected with a valve rod, and the air flue for being connected with power back-blowing filter pipeline, the valve body are provided with the valve body
A step is provided near described valve ball one end, a disc spring bracing ring is provided with the step, the disc spring bracing ring is near described
A gap is formed between the end face of step and the step, a disc spring, the gap and the air flue phase are provided with the gap
Connection, the direction of the end face is suitable to make disc spring bracing ring have to the motion in valve ball direction when end face is by helium air pressure
Gesture, is provided with least one first O-ring seals, the disc spring between the peripheral surface and the valve body of the disc spring bracing ring
Valve seat is provided between support ring and the valve ball, and the seat material is elastomeric material.
On the basis of above-mentioned technical proposal, the ball valve also includes valve seat support ring, and the valve seat support ring is connected in
In the valve seat peripheral surface；
The peripheral surface of the disc spring bracing ring includes mating surface and seal groove, the mating surface and the valve seat support ring
Inner surface is connected, and first O-ring seal is in the seal groove.
On the basis of above-mentioned technical proposal, the material of first O-ring seal is radiation hardness material.
On the basis of above-mentioned technical proposal, it is O-shaped that the valve body (1) is provided with second with the sealing surface of the valve gap (2)
Sealing ring and sealing member, the material of two second O-ring seals is radiation hardness material, and the sealing member is wound gasket
Piece.
On the basis of above-mentioned technical proposal, the valve gap is provided with the first valve gap step, institute near the side of the valve rod
State and one is provided with the first valve gap step holds the pad that rubs, described holding rubs pad for limiting the axial location of the valve rod；
Upper bearing (metal) is provided between the valve rod and the valve gap, between the valve rod and the valve ball lower axle is provided with
Hold, the upper bearing (metal) and lower bearing are used for the positioning that rotates in a circumferential direction of the valve rod.
On the basis of above-mentioned technical proposal, the ball valve also includes gland, and described filler gland is sheathed on described
On valve rod, and it is fixed on the top surface of the valve gap, between described filler gland and the valve rod stem bearing is provided with；
The valve gap is provided with groove with the joint face of the valve rod, and the valve gap top is provided with the second valve gap step, institute
State and form a filler space between gland, the second valve gap step and the valve rod.
On the basis of above-mentioned technical proposal, between the valve rod and the valve gap sealing structure is provided with；
The sealing structure includes the 3rd O-ring seal, thrust washer and filler, the 3rd O-ring seal and thrust
In the groove, described filler is filled in described filler gap pad；
3rd O-ring seal is radiation hardness material, and described filler is graphite.
On the basis of above-mentioned technical proposal, between the valve ball bottom and the valve body lower adjusting pad and valve ball are provided with
Bearing, the lower adjusting pad is used to limit position of the valve ball on vertical duct direction, and the valve ball bearing is used for described
The rotational positioning of valve ball.
On the basis of above-mentioned technical proposal, the valve body, valve gap, valve ball and valve rod are forging.
Compared with prior art, the utility model has the advantage of：
(1) when helium pressure is relatively low, a part for the sealing surface of valve seat is adjacent to ball surface, the helium in ball valve air flue
When atmospheric pressure increases, valve seat is pressed to valve ball by high-pressure helium by bracing ring, and valve seat occurs elastic deformation, makes the valve seat on valve seat
The area that sealing surface is fitted with ball surface increases, so that it is guaranteed that sealing of this ball valve under high-pressure helium, improves whole pipe
The security reliability on road.
(2) this ball valve body, valve gap, valve ball and valve rod are forging, and simple structure is easy for installation, are tied using upper dress formula
Structure, keeps in repair by pipeline scene is not required to dismounting, and security reliability is high, and use environment requirement can be met completely.
(3) sealed using O-ring seal between the bracing ring and valve body in this ball valve, the sealing between valve body and valve gap is adopted
With spirotallic gasket and the double sealing structure of the second O-ring seal, between valve rod and valve gap using flexible graphite sealing structure and
The double sealing structure of the 3rd O-ring seal, the material of O-ring seal takes into full account the impact of radiation factor, meets radiation hardness
Require, it is ensured that the sealing of valve body and valve rod is safe and reliable, under being particularly suitable for the working environment of high-pressure helium (medium is with radiation)
Use.
(4) this ball valve has been applied to the HTGR Nuclear Power Plant fuel handling system power back-blowing filter pipeline of nuclear power plant
In.
Description of the drawings
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the enlarged diagram of A in Fig. 1；
Fig. 3 is the enlarged diagram of B in Fig. 1；
Fig. 4 is the enlarged diagram of C in Fig. 1；
Fig. 5 is the enlarged diagram of D in Fig. 1；
Fig. 6 is the enlarged diagram of E in Fig. 1.
In figure：1- valve bodies, 11- air flues, 12- steps, 13- gaps, 2- valve gaps, 21- grooves, 22- valve gap steps, 23- is filled out
Material space, 3- valve balls, 4- valve rods, 5- disc spring bracing rings, the O-ring seals of 51- first, 52- mating surfaces, 53- seal grooves, 6- dish
Spring, 7- valve seats, 71- valve seat support rings, 72- sealing surface of seats, the O-ring seals of 81- second, 82- sealing members, 91- holds the pad that rubs,
92- upper bearing (metal)s, 93- lower bearings, 94- stem bearings, 10- glands, the O-ring seals of 201- the 3rd, 202- thrust washers,
203- fillers, adjusting pad under 30-, 40 valve ball bearings, 50- supports, 60- electric operators, 70- anti-static springs.
Specific embodiment
This utility model is described in further detail below in conjunction with drawings and Examples.
Referring to shown in Fig. 1 and Fig. 2, this utility model is provided and fill in one kind formula high-pressure helium seal ball-valve, and it is used for high temperature
The break-make of helium in fuel handling system power back-blowing filter pipeline in air cooling reactor of nuclear power plant, it includes valve body 1 and located at valve body 1
On valve gap 2, be provided with valve ball 3 in valve body 1, valve ball 3 be connected with a valve rod 4, valve body 1 be provided with for power back-blowing filter pipeline
The air flue 11 being connected.
Valve body 1 is provided with a step 12 near the one end of valve ball 3, and a disc spring bracing ring 5, disc spring bracing ring 5 are provided with step 12
Formed in a gap 13, gap 13 between the end face and step 12 of step 12 and be provided with a disc spring 6, gap 13 and the phase of air flue 11
Connection, the direction of end face is suitable to make disc spring bracing ring 5 have the movement tendency to the direction of valve ball 3 when end face is by helium air pressure,
At least one first O-ring seals 51, disc spring bracing ring 5 and valve ball are provided between the peripheral surface and valve body 1 of disc spring bracing ring 5
Valve seat 7 is provided between 3, and the material of valve seat 7 is elastomeric material.
Ball valve also includes valve seat support ring 71, and valve seat support ring 71 is connected in the peripheral surface of valve seat 7.
When helium pressure is relatively low, valve seat 7 is pressed to valve ball 3 by the elastic force of butterfly spring 6 by disc spring bracing ring 5, is made on valve seat 7
The part of sealing surface of seat 72 be adjacent to the surface of valve ball 3, realize that the sealing of this ball valve is safe and reliable.With ball valve air flue 11
Valve seat 7 is pressed to valve ball 3 by the increase of middle helium pressure, high-pressure helium by disc spring bracing ring 5, and valve seat 7 occurs elastic deformation, makes
Sealing surface of seat 72 on valve seat 7 is adjacent to partial enlargement with the surface of valve ball 3, until whole sealing surface of seats 72 with valve ball 3
Surface is adjacent to, so that it is guaranteed that the sealing of this ball valve is safe and reliable under high-pressure helium.
The peripheral surface of disc spring bracing ring 5 includes mating surface 52 and seal groove 53, in mating surface 52 and valve seat support ring 71
Surface engagement connects, and the first O-ring seal 51 is in seal groove 53.
The material of the first O-ring seal 51 is radiation hardness material.
Radiation hardness material remains to keep the soft sealing material of superperformance in the case where nuclear power station radiation event is born, for example, gather
Ether ether ketone polyetheretherketone (abbreviation PEEK) PEEK450g.
The first O-ring seal 51 adopted between disc spring bracing ring 3 and valve body 1 have radiation hardness, it is elastic good the characteristics of,
It is deformed in the presence of helium pressure, smoothly realizes the sealing between disc spring bracing ring 5 and valve body 1.
Specifically, the peripheral surface of disc spring bracing ring 5 is provided with two seal grooves 53, each seal groove 53 and is equipped with one
First O-ring seal 51.
Valve body 1 is provided with the second O-ring seal 81 and sealing member 82, two the second O-ring seals with the sealing surface of valve gap 2
81 material is radiation hardness material, and sealing member 82 is spirotallic gasket.
Sealing between valve body 1 and valve gap 2 adopts the double sealing structure of spirotallic gasket and the second O-ring seal 81, the
Two O-ring seals 81 are radiation hardness material, the second O-ring seal 81 and spirotallic gasket between valve body 1 and valve gap 2 stud it is pre-
It is deformed under clamp force effect, it is ensured that the sealing reliability of valve body 1 and valve gap 2.
Valve gap 2 is provided with the first valve gap step 21 near the side of valve rod 4, is provided with one at the first valve gap step 21 and holds the pad that rubs
91, hold and rub pad 91 for limiting the axial location of valve rod 4.
Upper bearing (metal) 92 is provided between valve rod 4 and valve gap 2, lower bearing 93, upper bearing (metal) are provided between valve rod 4 and valve ball 3
92 and lower bearing 93 be used for valve rod 4 the positioning that rotates in a circumferential direction.
Ball valve also includes gland 10, and gland 10 is sheathed on valve rod 4, and is fixed on the top surface of valve gap 2, is filled out
Stem bearing 94 is provided between material gland 10 and valve rod 4；
Valve gap 2 is provided with groove 22 with the joint face of valve rod 4, and the top of valve gap 2 is provided with the second valve gap step 23, gland
10th, a filler space 24 is formed between the second valve gap step 23 and valve rod 4.
Sealing structure is provided between valve rod 4 and valve gap 2；Sealing structure includes the 3rd O-ring seal 201, thrust washer
202 and filler 203, in groove 22, filler 203 is filled between filler for the 3rd O-ring seal 201 and thrust washer 202
In gap 24.
3rd O-ring seal 201 is radiation hardness material, and filler 203 is graphite.
Between valve rod 4 and valve gap 2 adopt flexible graphite sealing structure, in order to ensure the sealing of valve rod 4 it is safe and reliable, in valve
Add the O-ring seal 201 of radiation hardness material the 3rd between bar 4 and valve gap 2, smoothly realize the sealing of valve rod 4.
Lower adjusting pad 30 and valve ball bearing 40 are provided between the bottom of valve ball 3 and valve body 1, lower adjusting pad 30 is used to limit valve
Position of the ball 3 on vertical duct direction, valve ball bearing 40 is used for the rotational positioning of valve ball 3.
Valve body 1, valve gap 2, valve ball 3 and valve rod 4 are forging.
This ball valve body 1, valve gap 2, valve ball 3 and valve rod 4 are forging, and simple structure is easy for installation, are tied using upper dress formula
Structure, keeps in repair by pipeline scene is not required to dismounting, and security reliability is high, and use environment requirement can be met completely.
First O-ring seal 51, the second O-ring seal 81 and the 3rd O-ring seal 201 are radiation hardness material, resistance to spoke
Material is penetrated in the case where nuclear power station radiation event is born, remains to keep the soft sealing material of superperformance, such as polyether-ether-ketone
Polyetheretherketone (abbreviation PEEK) PEEK450g.
The installation process of this ball valve is as follows：
First the first O-ring seal 51 is enclosed within bracing ring 5, disc spring 6 and the assembling of disc spring bracing ring 5 are put in valve body 1
Step 12 at；Valve ball bearing 40 is fitted in 1 time gudgeon hole of valve body, lower adjusting pad 30 is assembled on valve ball bearing 40, so
Valve seat 7, valve seat support ring 71, valve ball 3 are fitted into together in valve body 1 afterwards, and valve seat support ring 71 is pushed in disc spring bracing ring 5
To compress valve seat 7.
Second O-ring seal 81 is fitted in the groove on valve gap 2, and the 3rd O-ring seal 201 and thrust washer
202 are fitted in groove 21, successively upper bearing (metal) 92 and lower bearing 93 are pressed into into valve gap 2, then will hold and rub pad 91 and valve rod 4 is pressed together
Enter in valve gap 2.Filler 203 is loaded into valve gap 2, and stem bearing 94, anti-static spring 70 is sequentially loaded in gland 10,
Gland 10 is loaded in valve gap 2 again, blending bolt is fixed.
Support 50 is loaded into valve gap 2, blending bolt is tightened, spirotallic gasket is put in the groove of valve body 1, driving hangs props up
Frame 50, adjusts the cubic position of valve rod 4, slowly puts valve gap 2 into valve body 1, bolt and nut is tightened, finally by electric operator
60 load on support 50, and blending bolt nut is fixed.
This ball valve also optimizes the structure of the runner mouth of valve ball 3, and when valve ball 3 takes out from valve body 1, valve ball 3 is in what is opened
State, the cone angle that 3 mouthfuls of valve ball takes out together with valve seat 7, and this structure is easy to the dismounting of this ball valve.
By quartet connection between valve rod 4 and valve ball 3, valve rod 4 turns clockwise 90 °, and this ball valve is closed, the inverse time of valve rod 4
Pin is rotated by 90 °, and this ball valve is opened.
This ball valve has been applied in the HTGR Nuclear Power Plant fuel handling system power back-blowing filter pipeline of nuclear power plant,
Ensure that and realize maximum helium leakage 5x10 under 8.3MPa-7Pam3/ s, maximum helium internal hemorrhage due to trauma 1x10-5Pam3/ s, and in this ball
Safe and reliable sealing is all capable of achieving in the life cycle of valve.
This utility model is not limited to above-mentioned embodiment, for those skilled in the art, not
On the premise of departing from this utility model principle, some improvements and modifications can also be made, these improvements and modifications are also considered as this reality
Within new protection domain.The content not being described in detail in this specification belongs to known to professional and technical personnel in the field
Prior art.
Claims (9)
1. formula high-pressure helium seal ball-valve, the fuel handling system blowback that it is used in HTGR Nuclear Power Plant are filled in one kind
The break-make of helium in filter pipeline, it is included in valve body (1) and the valve gap (2) on the valve body (1), the valve body (1)
Be provided with valve ball (3), the valve ball (3) be connected with a valve rod (4), the valve body (1) be provided with for power back-blowing filter pipeline
The air flue (11) being connected, it is characterised in that：The valve body (1) is provided with a step (12) near the valve ball (3) one end, described
Step (12) place is provided with a disc spring bracing ring (5), the disc spring bracing ring (5) near the step (12) end face with described
Formed between rank (12) in a gap (13), the gap (13) and be provided with a disc spring (6), the gap (13) and the air flue
(11) it is connected, the direction of the end face is suitable to be made when end face is by helium air pressure disc spring bracing ring (5) with to valve ball (3) side
To movement tendency, be provided with least one first between the peripheral surface and the valve body (1) of the disc spring bracing ring (5) O-shaped
Sealing ring (51), is provided with valve seat (7) between the disc spring bracing ring (5) and the valve ball (3), and the valve seat (7) material is
Elastomeric material.
2. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：The ball valve also includes valve
Seat supports circle (71), the valve seat support ring (71) is connected in the valve seat (7) peripheral surface；
The peripheral surface of the disc spring bracing ring (5) includes mating surface (52) and seal groove (53), the mating surface (52) and institute
State valve seat support ring (71) inner surface to be connected, first O-ring seal (51) is in the seal groove (53).
3. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：The first O-shaped sealing
The material of circle (51) is radiation hardness material.
4. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：The valve body (1) and institute
The sealing surface for stating valve gap (2) is provided with the second O-ring seal (81) and sealing member (82), two second O-ring seals
(81) material is radiation hardness material, and the sealing member (82) is spirotallic gasket.
5. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：The valve gap (2) is close
The side of the valve rod (4) is provided with the first valve gap step (21), and the first valve gap step (21) place is provided with one and holds the pad (91) that rubs,
Described holding rubs pad (91) for limiting the axial location of the valve rod (4)；
Upper bearing (metal) (92) is provided between the valve rod (4) and the valve gap (2), between the valve rod (4) and the valve ball (3)
Be provided with lower bearing (93), the upper bearing (metal) (92) and lower bearing (93) for the valve rod (4) the positioning that rotates in a circumferential direction.
6. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：The ball valve also includes filling out
Material gland (10), described filler gland (10) is sheathed on the valve rod (4), and is fixed on the top surface of the valve gap (2), institute
State and stem bearing (94) is provided between gland (10) and the valve rod (4)；
The valve gap (2) is provided with groove (22) with the joint face of the valve rod (4), and valve gap (2) top is provided with the second valve
Lid step (23), between described filler gland (10), the second valve gap step (23) and the valve rod (4) filler space is formed
(24)。
7. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 6, it is characterised in that：The valve rod (4) and institute
State and be provided with sealing structure between valve gap (2)；
The sealing structure includes the 3rd O-ring seal (201), thrust washer (202) and filler (203), and the described 3rd is O-shaped close
In the groove (22), described filler (203) is filled in described filler gap for seal (201) and thrust washer (202)
(24) in；
3rd O-ring seal (201) is radiation hardness material, and described filler (203) is graphite.
8. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：Valve ball (3) bottom
Lower adjusting pad (30) and valve ball bearing (40) are provided between the valve body (1), the lower adjusting pad (30) is for limiting
State position of the valve ball (3) on vertical duct direction, the valve ball bearing (40) for the valve ball (3) rotational positioning.
9. formula high-pressure helium seal ball-valve is filled in one kind as claimed in claim 1, it is characterised in that：The valve body (1), valve gap
(2), valve ball (3) and valve rod (4) are forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026044.2U CN206130168U (en) | 2016-08-31 | 2016-08-31 | Sealed ball valve of upper assembling type high pressure helium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026044.2U CN206130168U (en) | 2016-08-31 | 2016-08-31 | Sealed ball valve of upper assembling type high pressure helium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206130168U true CN206130168U (en) | 2017-04-26 |
Family
ID=58567287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621026044.2U Active CN206130168U (en) | 2016-08-31 | 2016-08-31 | Sealed ball valve of upper assembling type high pressure helium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206130168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005835A (en) * | 2019-04-04 | 2019-07-12 | 苏州纽威阀门股份有限公司 | A kind of baiting valve |
-
2016
- 2016-08-31 CN CN201621026044.2U patent/CN206130168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005835A (en) * | 2019-04-04 | 2019-07-12 | 苏州纽威阀门股份有限公司 | A kind of baiting valve |
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