RU2273781C2 - Sealing unit for movable connection - Google Patents
Sealing unit for movable connection Download PDFInfo
- Publication number
- RU2273781C2 RU2273781C2 RU2004118139/06A RU2004118139A RU2273781C2 RU 2273781 C2 RU2273781 C2 RU 2273781C2 RU 2004118139/06 A RU2004118139/06 A RU 2004118139/06A RU 2004118139 A RU2004118139 A RU 2004118139A RU 2273781 C2 RU2273781 C2 RU 2273781C2
- Authority
- RU
- Russia
- Prior art keywords
- sealing
- ring
- resistant
- heat
- seal assembly
- Prior art date
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 32
- 230000003014 reinforcing Effects 0.000 claims abstract description 14
- 239000000463 materials Substances 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- 239000011148 porous materials Substances 0.000 claims abstract description 4
- 229920001967 Metal rubber Polymers 0.000 claims description 6
- 239000000835 fibers Substances 0.000 claims description 6
- 239000007787 solids Substances 0.000 claims description 6
- 230000000149 penetrating Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000003779 heat-resistant materials Substances 0.000 abstract 1
- 230000002035 prolonged Effects 0.000 abstract 1
- 239000000126 substances Substances 0.000 abstract 1
- 230000003628 erosive Effects 0.000 description 6
- 239000000654 additives Substances 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fibers Substances 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 239000000919 ceramics Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000000356 contaminants Substances 0.000 description 2
- 229920002313 fluoropolymers Polymers 0.000 description 2
- 239000002184 metals Substances 0.000 description 2
- 239000002245 particles Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 239000003566 sealing materials Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 241001517013 Calidris pugnax Species 0.000 description 1
- 210000004907 Glands Anatomy 0.000 description 1
- 210000001503 Joints Anatomy 0.000 description 1
- 210000003666 Nerve Fibers, Myelinated Anatomy 0.000 description 1
- -1 basalt Loknya Substances 0.000 description 1
- 239000002585 bases Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carriers Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite materials Substances 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabrics Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melts Substances 0.000 description 1
- 239000000203 mixtures Substances 0.000 description 1
- 229910052755 nonmetals Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Abstract
Description
The invention relates to valves, in particular to nodes of the seal of movable joints.
A known seal assembly of a movable joint in the form of a ball valve seat made in the form of a molded annular block of elastically deformable sealing material, one part of which is installed in the annular groove of the valve body, and the other is made with the possibility of contact on the surface of the counter-part is a spherical locking element (see US patent No. 5904337A dated 05/18/99, z-ki 0352888, 03/05/98, MKI F 16 K 5/06, ISM v.70, No. 10, 2000).
The disadvantage of this design is that at high pressures of the working medium, the elastomeric material of the seat "flows", which leads to damage and depressurization. The use of harder and stronger materials does not ensure the tightness of the node due to their low elasticity. Low antisplash properties. At high temperatures, only products based on graphite, asbestos, and basalt work, which have weak erosion properties and the tearing strength of material particles.
It is known that the sealing assembly of the movable joint in the form of a ball valve seat, consisting of two sealing parts installed in a recess on the inner surface of the housing, one of which is a carrier and removes contaminants from the surface of the counter-detail - a spherical locking element before it contacts the second sealing part, molded from soft elastomeric material (see US patent No. 6047952 A of 04/11/00, No. z-ki 115049, 07/14/98, MKI F 16 K 5/06, ISM c. 70, No. 7, 2001).
This design partially eliminates the disadvantages of the above analogue. In this design, two sealing elements of different stiffness were used, one of which works as a wiper and a supporting element, which reduces the access of contaminants to the friction zone of the saddle with the spherical surface of the locking element.
The disadvantage of this design is that at high temperatures only products based on graphite, asbestos, and basalt work, which have weak erosion properties and the tearing strength of material particles.
The objective of the invention is to increase the wear resistance and erosion resistance at high operating temperatures, increasing the reliability and durability.
The technical result is that in the seal assembly of the movable valve joint, including an annular block, one part of which is installed in the annular groove of the housing, and the other is made in shape and with the possibility of contact with the surface of the counter-detail, and the annular block includes two sealing bodies, the first of which is made of a product with higher hardness and strength, and the second is from a softer and more flexible first sealing heat-resistant product of expanded graphite, the first tel o is made in the form of a volume reinforcing frame and permeable ring in the shape of the contact surface of the counterpart with the collars bent in the direction from its surface and connected with it, the pore space of which is previously filled with a second heat-resistant sealing product that is more solid, more solid, wear-resistant than the first sealing heat-resistant product, and the first and second sealing bodies are seamlessly connected to each other, in addition:
- volumetric reinforcing frame and permeable ring made of wire, for example of mesh,
- volumetric reinforcing frame and permeable ring is made with elastic-damping properties of "metal rubber",
- volumetric reinforcing frame and permeable ring made of fibers, for example from felt,
- volumetric reinforcing frame and permeable ring is made with antifriction properties,
- triple sealing heat-resistant product is made with antifriction properties.
Figure 1, 2, 3 shows the design of the implementation of the seal assembly of the movable valve connection.
The sealing assembly of the movable valve joint (UPCS) includes an annular block (KB) 1, one part 2 of which is installed in the annular groove 3 of the housing 4, and the other part 5 is shaped and with the possibility of contact with the surface 6 of the counter-part 7. KB 1 includes two annular sealing bodies (KUT) 8, 9, the first of which KUT 8 is made of a product with higher hardness and strength, and the second KUT 9 is made of a softer and more flexible first sealing heat-resistant product (WAY) - thermally expanded graphite, basalt Loknya, carbon fiber, basalt fabric, graphite etc. KUT 8 is made in the form of a volumetric reinforcing carcass and permeable ring (OAKPK) in the shape of the contact surface 6 of the counter-part 7 with the collars 10.11 bent in the direction from its surface 6 and connected with it. The pore space of KUT 8 is pre-filled with a second sealing heat-resistant product (VUTI) monolithically connected with it with mutually penetrating bonds, denser, harder than WAYs, for example the same thermally expanded graphite, but with antifriction additives, the addition of carbon, fiberglass and more densely pressed, Moreover, it is more solid, durable, wear-resistant. KUT 8, KUT 9 are seamlessly connected to each other (joint pressing). OAKPK can be made of wire in the form of a mesh or with elastic-damping properties of "metal rubber (MR)", as well as of metal, non-metallic (ceramic) fibers pressed, brazed, glued (hot melt up to 1000 °), welded, from perforated sheet material ( micro-holes made by laser, electroerosive method, etc.). OAKPK can be made with antifriction properties of bronze, ceramic fibers, a combination of various wires and fibers.
The seal assembly may be in the form of ball seats (Fig. 1), disk seats (Fig. 3), gland packing (Fig. 2), etc. The sealing surface may be flat, cylindrical, spherical, toroidal, conical (a common locking saddle) valve). KUT 8, KUT 9 may not be round, but elliptical, complex curvilinear, rectilinear flat or spatial in shape. The counter-part 7 can rotate, move forward or along a complex path. KUT 8 is in contact with the sealing surface 6 of the counter-part 7, which can be continuous (UUPSK rod of figure 2) or intermittent with holes for the flow of the working medium (figure 1, 3).
Work UUPSK. When counter-part 7 moves, its surface 6 moves with friction along the outer surface of KUT 8. VUTI has increased hardness, strength, and wear resistance due to its high degree of compaction (during pressing, joint rolling with OAKPK) and all kinds of reinforcing additives (carbon fiber, etc.) . The presence of KUT 8 OAKPK gives it even greater hardness, strength, wear resistance. Together, a new composite product is obtained, which has the flexibility, elasticity, which is inherent in permeable products from mesh, felt, "MR" and the sealing ability inherent in heat-resistant sealing product No. 2. KUT 9 performs the function of compaction in the annular groove 3 and the elastic clamp KUT 8. To provide the function of elastic clamp KUT 9 WAY less dense, strong, solid, VUTI. Elastic properties are easily adjusted by changing the density. A highly compacted VUTI has low elasticity, which reduces its sealing ability. The presence of collars 10, 11 bent in the direction from the surface 6 of the counter-part 7 allows you to firmly attach KUT 8 and KUT 9, as well as to prevent tearing of KUT 8 during installation, work with intermittent surfaces, when opening and closing the valve (opening of the valve). The strength, antifriction, and wear-resistant characteristics of KUT 8 can be controlled over a wide range by additives, pressing technology, and the use of KUT 8 OAKPK bases (metal fibers, wires of different diameters, non-metal fibers). The use of "MR" allows you to perform OAKPK from a single piece of wire with two ends, which makes the OAKPK design solid, which is difficult to destroy, as well as the elastic properties for pressing to counter surface 6 of counter-part 7, which the grid does not have. KU7 8 has excellent antisplash properties since OAKPK works like a ruff. The erosion resistance of KUT 8 is also higher than the WAYS, because part of the erosion load falls on OAKPK, and VUTI is highly compacted and with reinforcing additives. The operation of UUPSC is distinguished by increased wear resistance and erosion resistance at high temperatures, which allows it to be used as valve seats, rod seals in translational, rotational and complex movements. It should be noted that UUPSC designs can also be used at lower temperatures; for this, instead of a thermally expanded graphite tape, a tape made of F4 fluoroplastic for KUT 9 or fluoroplastic with coke additives (F4K20), carbon fiber (flubon) is used, while the sealing properties of UUPSC are improved .
The performance of UUPSC with permeable for VUTI OAKPK provides their improved operational characteristics: non-susceptibility to extrusion and leakage of sealing material, high dirt-protecting and dirt-cleaning abilities, the possibility of use at high pressures and temperatures of the working medium, high antifriction properties, which are provided by the material of the reinforcing element, high heat dissipation abilities from the friction zone KUT 8 with the surface 6 of the counter-part 6. This increases the reliability and durability of the UUPS.
This UUPSK design can be used in shutoff, control, safety valves in various industries.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2004118139/06A RU2273781C2 (en) | 2004-06-15 | 2004-06-15 | Sealing unit for movable connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2004118139/06A RU2273781C2 (en) | 2004-06-15 | 2004-06-15 | Sealing unit for movable connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2004118139A RU2004118139A (en) | 2006-01-10 |
| RU2273781C2 true RU2273781C2 (en) | 2006-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2004118139/06A RU2273781C2 (en) | 2004-06-15 | 2004-06-15 | Sealing unit for movable connection |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2273781C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2542653C2 (en) * | 2009-07-17 | 2015-02-20 | Фишер Контролз Интернешнел Ллс | Valve gate assembly to be used with hydraulic valves (versions) |
| RU168835U1 (en) * | 2016-06-21 | 2017-02-21 | Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") | Valve seat in ship body |
| RU181292U1 (en) * | 2017-03-29 | 2018-07-09 | Закрытое акционерное общество "Курганспецарматура" | Wedge gate valve |
-
2004
- 2004-06-15 RU RU2004118139/06A patent/RU2273781C2/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2542653C2 (en) * | 2009-07-17 | 2015-02-20 | Фишер Контролз Интернешнел Ллс | Valve gate assembly to be used with hydraulic valves (versions) |
| RU168835U1 (en) * | 2016-06-21 | 2017-02-21 | Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") | Valve seat in ship body |
| RU181292U1 (en) * | 2017-03-29 | 2018-07-09 | Закрытое акционерное общество "Курганспецарматура" | Wedge gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2004118139A (en) | 2006-01-10 |
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| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20060616 |