RU2273781C2 - Sealing unit for movable connection - Google Patents

Sealing unit for movable connection Download PDF

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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
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RU
Russia
Prior art keywords
sealing
ring
resistant
heat
seal assembly
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Application number
RU2004118139/06A
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Russian (ru)
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RU2004118139A (en
Inventor
Александр Павлович Андреев (RU)
Александр Павлович Андреев
Юрий Степанович Панчеха (RU)
Юрий Степанович Панчеха
Борис Владимирович Бурмистров (RU)
Борис Владимирович Бурмистров
Григорий Юрьевич Панчеха (RU)
Григорий Юрьевич Панчеха
Original Assignee
Александр Павлович Андреев
Юрий Степанович Панчеха
Борис Владимирович Бурмистров
Григорий Юрьевич Панчеха
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Александр Павлович Андреев, Юрий Степанович Панчеха, Борис Владимирович Бурмистров, Григорий Юрьевич Панчеха filed Critical Александр Павлович Андреев
Priority to RU2004118139/06A priority Critical patent/RU2273781C2/en
Publication of RU2004118139A publication Critical patent/RU2004118139A/en
Application granted granted Critical
Publication of RU2273781C2 publication Critical patent/RU2273781C2/en

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Abstract

FIELD: valving.
SUBSTANCE: sealing unit comprises ring unit. The first member of the ring unit is mounted in the ring groove in the housing. The second member of the ring unit mates with the surface of the counterpart for permitting contact. The ring unit has two sealing ring bodies. The first ring body is made of a material that exhibits heightened hardness and strength. The second ring body is made of more soft and flexible material, e.g. thermo-expandable graphite. The first body is made of three-dimensional reinforcing frame permeable ring whose surface mates with the counterpart for permitting contact and has collars bent outward from its surface. The pore space of the ring is preliminary filled with a heat-resistant material whose strength, density, hardness, and durability are higher than theses of the first sealing heat-resistant member. The first and second sealing bodies are interconnected.
EFFECT: enhanced durability and prolonged service life.
4 cl, 3 dwg

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)

1. The seal assembly of the movable connection of the valve, 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 annular bodies, the first of which is made of products with higher hardness and strength, and the second - from a softer and more flexible sealing heat-resistant product - thermally expanded graphite, characterized in that the first body is made in e of a volume reinforcing carcass and permeable ring in the shape of the contact surface of the counterpart with the collars bent away from its surface and connected with it, the pore space of which is previously filled with a heat-resistant sealing product with mutually penetrating bonds, which is more durable, dense, solid, wear-resistant than the first sealing heat-resistant product, and the first and second sealing bodies are seamlessly connected to each other.
2. The seal assembly of the movable valve joint according to claim 1, characterized in that the volumetric reinforcing carcass and permeable ring is made of wire, for example, of mesh, or of fibers, for example of felt.
3. The seal assembly of the movable valve joint according to claim 1, characterized in that the volumetric reinforcing carcass and permeable ring is made with elastic-damping properties, for example, of "metal rubber".
4. The seal assembly of the movable valve joint according to claim 1, characterized in that the volumetric reinforcing frame and permeable ring is made of a material with antifriction properties.
5. The sealing assembly of the movable valve joint according to claim 1, characterized in that the second sealing heat-resistant product is made of a material with antifriction properties.
RU2004118139/06A 2004-06-15 2004-06-15 Sealing unit for movable connection RU2273781C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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RU2004118139/06A RU2273781C2 (en) 2004-06-15 2004-06-15 Sealing unit for movable connection

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RU2273781C2 true RU2273781C2 (en) 2006-04-10

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Cited By (3)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20060616