CN205226434U - Vice autogenous pressure sealing gate valve of double sealing - Google Patents
Vice autogenous pressure sealing gate valve of double sealing Download PDFInfo
- Publication number
- CN205226434U CN205226434U CN201521056686.2U CN201521056686U CN205226434U CN 205226434 U CN205226434 U CN 205226434U CN 201521056686 U CN201521056686 U CN 201521056686U CN 205226434 U CN205226434 U CN 205226434U
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- valve
- seal ring
- valve gap
- valve body
- fixed block
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Abstract
The utility model belongs to autogenous pressure sealing gate valve, concretely relates to vice autogenous pressure sealing gate valve of double sealing. Vice autogenous pressure sealing gate valve of double sealing, including valve body, valve gap, two sealing rings, mounting, it is vice to form double sealing, two sealing rings the extrusion of valve gap and mounting can form down two sealed, that a sealing ring original relatively formed is sealed better just more reliable in the poor lower seal effect of high pressure.
Description
Technical field
The utility model belongs to self-pressure-sealed gate valve, is specifically related to the secondary self-pressure-sealed gate valve of a kind of double seal.
Background technique
The sealing principle of self-pressure-sealed gate valve is exactly that middle cavity pressure promotion valve gap is up walked, band rotary packing ring is also up walked, but seal ring be press against by pendant collet, so seal ring is the thinnest position bottom, also be the most easily be out of shape, seal ring creates the effect of sealing once being out of shape., along with the rising gradually of pressure, and original self-pressure-sealed gate valve only has a seal ring, can only form a seal point, cannot form good sealing.
Summary of the invention
The utility model content, for the problems referred to above, provides a kind of double seal secondary self-pressure-sealed gate valve, under high pressure also can have good sealing effect.
Technical solution adopted in the utility model is as follows: the secondary self-pressure-sealed gate valve of a kind of double seal, comprise valve body, flashboard, valve seat, valve rod, valve gap, first seal ring, fixed block, described valve rod is through valve gap, described valve rod bottom is connected with flashboard, described valve body is sleeved on outside valve gap, first seal ring is installed between described valve body and valve gap, first seal ring coordinates with valve gap inclined-plane, fixed block is fixed with between described valve body and valve gap, described first seal ring is between fixed block and valve gap, between described first seal ring and fixed block, the second seal ring is also installed, described second seal ring coordinates with the first seal ring inclined-plane.
Described valve gap opposed fixed member is inclined-plane to upper/lower positions, and described valve body, valve gap, fixed block form wedge shape space, and described inclined-plane is interior inclined-plane.
Described first seal ring cross section is triangle, described second seal ring is wedge shape, first seal ring and the second packing ring combination form wedge shape, and be positioned at the described wedge shape space formed by valve body, valve gap, fixed block, the inclined-plane that described first seal ring overlaps with the second seal ring is outer inclined-plane.
Described first seal ring and valve gap are formed and interspace in advance.
Described valve body is fixed with valve body top cover, described valve gap is connected with valve body top cover screw, under described valve gap is positioned at valve body top cover, and overlapping bottom with the first seal ring bottom of the wedge shape space that described valve body, valve gap, fixed block are formed.
Described fixed block is pendant collet.
Be provided with gland above described valve gap, be provided with pressing plate above described gland, be filled with filler in described gland, described valve rod is through gland, pressing plate.
The beneficial effects of the utility model are as follows: middle cavity pressure raises, inside and outside differential pressure promotes valve gap and moves up, under the extruding of fixed block and valve gap, first seal ring and the second seal ring acting in conjunction, first seal ring up and down the thinnest position the most easily produces distortion, forms two seal points, and the amount of deformation of seal ring increases, make gate valve still can form fine sealing effect at elevated pressures, and more reliable.
Accompanying drawing explanation
Fig. 1 is the secondary self-pressure-sealed gate valve structure figure of double seal.
Fig. 2 is the partial enlarged drawing of L in Fig. 1.
In figure, 1. valve body, 101. valve body top cover, 2. flashboard, 3. valve seat, 4. valve rods, 5. valve gap, 6. gland, 7. pressing plate, 8. filler, 9. lumen, 10. fixed block, 11. first seal rings, 1101. first seal points, 1102. second seal points, 12 second seal rings, 13. screws, 14. interspace in advance.
Specific embodiment
By reference to the accompanying drawings, the secondary self-pressure-sealed gate valve of a kind of double seal, comprise valve body 1, flashboard 2, valve seat 3, valve rod 4, valve gap 5, first seal ring 11, fixed block 10, described valve rod 4 is through valve gap 5, described valve rod 4 bottom is connected with flashboard 2, described valve body 1 is sleeved on outside valve gap 5, first seal ring 11 is installed between described valve body 1 and valve gap 5, first seal ring 11 coordinates with valve gap 5 inclined-plane, fixed block 10 is fixed with between described valve body 1 and valve gap 5, described first seal ring 11 is between fixed block 10 and valve gap 5, between described first seal ring 11 and fixed block 10, second seal ring 12 is also installed, described second seal ring 12 coordinates with the first seal ring 11 inclined-plane.
Described valve gap 5 opposed fixed member 10 is inclined-plane 501 to upper/lower positions, and described valve body 1, valve gap 5, fixed block 10 form wedge shape space, and described inclined-plane 501 is interior inclined-plane.
Described first seal ring 11 cross section is triangle, described second seal ring 12 is wedge shape, first seal ring 11 and the second seal ring 12 are combined to form wedge shape, be positioned at the described wedge shape space formed by valve body 1, valve gap 5, fixed block 10, the inclined-plane that described first seal ring 11 overlaps with the second seal ring 12 is outer inclined-plane.
Described first seal ring 11 is formed with valve gap 5 and interspaces 14 in advance.
Described valve body 1 is fixed with valve body top cover 101, described valve gap 5 is connected with valve body top cover 101 screw 13, described valve gap 5 is positioned at valve body top cover 101 times, overlapping bottom with the first seal ring 11 bottom of the wedge shape space that described valve body 1, valve gap 5, fixed block 10 are formed.
Described fixed block 10 is pendant collet.Pendant collet is more easily installed.
Be provided with gland 6 above described valve gap 5, be provided with pressing plate 7 above described gland 6, be filled with filler 8 in described gland 6, described valve rod 4 is through gland 6, pressing plate 7.
Below to working procedure process specification of the present utility model:
First seal ring 11 and the second seal ring 12 are in the wedge shape space formed by valve body 1, valve gap 5, fixed block 10, described valve body 1 is fixed with valve body top cover 101, described valve gap 5 is connected with valve body top cover 101 screw 13, described valve gap 5 is positioned at valve body top cover 101 times, overlapping bottom with the first seal ring 11 bottom of the wedge shape space that described valve body 1, valve gap 5, fixed block 10 are formed.Form the initial sealing of valve lumen 9, without the need to adjusting valve gap 5 position in advance before use.
Valve rod 4 moves down, and drives flashboard 2 to move down, and promotion valve seat 3 is pushed open to both sides and blocked passage, realizes playing gate valve effect.
Along with pressure medium in valve lumen 9 raises, inside and outside differential pressure promotes valve gap 5 and moves up, valve gap and sealing gasket, and the seal pressure between valve body and sealing gasket, increase gradually with the increase of pressure, on first seal ring 11, the thinnest two ends up and down start distortion, form two seal points 1101,1102, along with pressure strengthens, the distortion of two seal points 1101,1102 is strengthened, sealing effect is also stronger, is formed self-pressure-sealed.Two relatively original Sealings of Sealing can form two seal points, and amount of deformation increases, and can bear higher pressure.
Filler 8 in gland 6 forms motive sealing with valve rod 4, and sealing is strengthened.
The foregoing is only a kind of embodiment of the present utility model, be not used for limiting protection domain of the present utility model; Protection domain of the present utility model is limited by the claim in claims, and every equivalence done according to model utility changes and amendment, all within the protection domain of the utility model patent.
Claims (7)
1. the secondary self-pressure-sealed gate valve of double seal, comprise valve body (1), flashboard (2), valve seat (3), valve rod (4), valve gap (5), first seal ring (11), fixed block (10), described valve rod (4) is through valve gap (5), described valve rod (4) bottom is connected with flashboard (2), described valve body (1) is sleeved on valve gap (5) outward, first seal ring (11) is installed between described valve body (1) and valve gap (5), first seal ring (11) coordinates with valve gap (5) inclined-plane, fixed block (10) is fixed with between described valve body (1) and valve gap (5), described first seal ring (11) is positioned between fixed block (10) and valve gap (5), it is characterized in that: between described first seal ring (11) and fixed block (10), the second seal ring (12) is also installed, described second seal ring (12) coordinates with the first seal ring (11) inclined-plane.
2. the secondary self-pressure-sealed gate valve of double seal according to claim 1, it is characterized in that: described valve gap (5) opposed fixed member (10) is inclined-plane (501) to upper/lower positions, described valve body (1), valve gap (5), fixed block (10) form wedge shape space, and described inclined-plane (501) are interior inclined-plane.
3. the secondary self-pressure-sealed gate valve of double seal according to claim 2, it is characterized in that: described first seal ring (11) cross section is triangle, described second seal ring (12) is wedge shape, first seal ring (11) and the second seal ring (12) are combined to form wedge shape, be positioned at the described wedge shape space formed by valve body (1), valve gap (5), fixed block (10), the inclined-plane that described first seal ring (11) overlaps with the second seal ring (12) is outer inclined-plane.
4. the secondary self-pressure-sealed gate valve of double seal according to claim 3, is characterized in that: described first seal ring (11) and valve gap (5) are formed interspace in advance (14).
5. the secondary self-pressure-sealed gate valve of double seal according to claim 3, it is characterized in that: described valve body (1) is fixed with valve body top cover (101), described valve gap (5) is connected with valve body top cover (101) screw (13), under described valve gap (5) is positioned at valve body top cover (101), overlapping bottom with the first seal ring (11) bottom of the wedge shape space that described valve body (1), valve gap (5), fixed block (10) are formed.
6. the secondary self-pressure-sealed gate valve of double seal according to claim 1, is characterized in that: described fixed block (10) is pendant collet.
7. the secondary self-pressure-sealed gate valve of double seal according to claim 1, it is characterized in that: described valve gap (5) top is provided with gland (6), described gland (6) top is provided with pressing plate (7), be filled with filler (8) in described gland (6), described valve rod (4) is through gland (6), pressing plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521056686.2U CN205226434U (en) | 2015-12-17 | 2015-12-17 | Vice autogenous pressure sealing gate valve of double sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521056686.2U CN205226434U (en) | 2015-12-17 | 2015-12-17 | Vice autogenous pressure sealing gate valve of double sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226434U true CN205226434U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521056686.2U Active CN205226434U (en) | 2015-12-17 | 2015-12-17 | Vice autogenous pressure sealing gate valve of double sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610742A (en) * | 2020-12-02 | 2021-04-06 | 山东齐鲁电机制造有限公司 | High-pressure main steam valve of steam turbine |
-
2015
- 2015-12-17 CN CN201521056686.2U patent/CN205226434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610742A (en) * | 2020-12-02 | 2021-04-06 | 山东齐鲁电机制造有限公司 | High-pressure main steam valve of steam turbine |
| CN112610742B (en) * | 2020-12-02 | 2023-02-28 | 山东齐鲁电机制造有限公司 | High-pressure main steam valve of steam turbine |
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