CN211059562U - Metal compression ring composite sealing filler device - Google Patents
Metal compression ring composite sealing filler device Download PDFInfo
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- CN211059562U CN211059562U CN201921524125.9U CN201921524125U CN211059562U CN 211059562 U CN211059562 U CN 211059562U CN 201921524125 U CN201921524125 U CN 201921524125U CN 211059562 U CN211059562 U CN 211059562U
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Abstract
The utility model relates to a metal compression ring composite sealing packing device, which comprises a metal ring and a non-metal sealing packing, wherein the non-metal sealing packing comprises a graphite packing, a fiber packing and a tetrafluoro packing; the metal ring comprises a closed metal ring or a C-shaped metal ring with one side opened; the metal ring is formed by bending a metal hollow pipe or a metal sheet with a semicircular, arc-shaped or V-shaped section; the metal ring is pressed by external force to flatten the metal ring, and expand and deform in the radial direction, so that the inner side and the outer side of the metal ring are tightly matched with the side wall of the sealing cavity. The utility model discloses a soft easy-to-draw metal clamping ring and nonmetal sealing filler compress tightly under the exogenic action and form composite construction to reach and strengthen sealed effect. The utility model discloses have stronger high temperature resistant, high pressure performance, sealing performance is good, and bearing strength is big, long service life, simple to operate. It is especially suitable for high temperature and high pressure heat distribution pipe network, and is safe and reliable in use, and favorable for energy saving and environment protection.
Description
Technical Field
The utility model belongs to the technical field of the pipeline packing technique and specifically relates to a metal compression ring composite seal filler device.
Background
Packing seals are also known as Gland packing (Gland Packings) seals, commonly known as Packings (Packings). The mechanism of the packing seal is as follows: after the packing is filled into the packing cavity, it is axially compressed by the gland, and when the shaft and the packing move relatively, the packing generates radial force and is tightly contacted with the shaft due to the plasticity of the packing. At the same time, the lubricant impregnated in the filler is squeezed out, forming an oil film between the contact surfaces. Because the contact state is not particularly uniform, a 'boundary lubrication' state, namely a 'bearing effect', appears at the contact part; the concave part which is not contacted forms a small oil groove with a thicker oil film, and the contact part and the non-contact part form an irregular labyrinth to play a role of preventing the leakage of the medium, which is called as a labyrinth effect.
The existing sleeve type compensator and the rotary compensator both need to adopt packing seal, the sleeve type compensator compensates the displacement of a pipeline through the extension of a sliding core pipe, the seal between the sliding core pipe and the packing can not keep a good state for a long time, and the leakage is easy to generate after long-term use. A sealing filler cavity is arranged between the inner pipe and the outer pipe of the rotary compensator, sealing filler is filled in the sealing cavity, and the sealing filler is compressed by a filler gland to realize sealing. The fit clearance is great between rotary compensator's the rotary part, receives pipeline thrust effect, and the poor stability of interior outer tube relative rotation easily produces the eccentric deflection of disalignment, increases the rotation resistance for wearing and tearing easily or by crushing in the high-pressure pipeline, can influence the sealing performance of sealing filler after using a period promptly, lead to sealed inefficacy, appear leaking. If the detection and the maintenance are not timely, safety production accidents can even be caused.
The existing pipeline compensator generally adopts graphite packing or asbestos packing as sealing packing, and has a good sealing effect under a common working condition. For pipelines for conveying high-temperature and high-pressure media, the packing materials are greatly lost in the deflection and displacement processes of the compensator due to the inevitable assembly clearance of the pipeline compensator and the low strength of the traditional sealing packing, and after the packing materials are used for a period of time, the labyrinth effect which plays a role of preventing the media from leaking fails, so that the sealing of the compensator fails and the leakage occurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a metal compression ring composite seal filler device that has stronger high temperature resistant, high pressure performance, and sealing performance is good, and bearing strength is big, long service life, simple to operate.
The purpose of the utility model is realized by adopting the following technical scheme:
the metal compression ring composite sealing packing device comprises a sealing cavity and sealing packing, wherein the sealing packing is arranged in the sealing cavity, the composite sealing packing device comprises a metal ring and non-metal sealing packing, and the non-metal sealing packing comprises a graphite packing, a fiber packing and a tetrafluoro packing; the metal ring comprises a closed metal ring or a C-shaped metal ring with one side opened; the metal ring is formed by bending a metal hollow pipe or a metal sheet with a semicircular, arc-shaped or V-shaped section; the metal ring is pressed by external force to flatten the metal ring, and expand and deform in the radial direction, so that the edges of the inner side and the outer side of the metal ring are tightly matched with the side wall of the sealing cavity, and meanwhile, the metal ring is tightly combined with the nonmetal sealing filler, thereby achieving the effect of strengthening sealing.
As the utility model discloses an optimized technical scheme, compound seal packing device includes at least two-layer becket and two-layer non-metal seal packing, and first becket is established in the bottom in sealed chamber, and first non-metal seal packing is established on first becket, and the second becket is established between first non-metal seal packing and the non-metal seal packing of second.
As a preferable technical solution of the present invention, the first metal ring is formed by bending a hollow metal pipe, and the second metal ring is formed by bending a V-shaped metal piece.
As a preferred technical solution of the present invention, the first metal ring is a closed metal ring with a welded end, and the second metal ring is a C-shaped metal ring with an open side.
As the preferred technical scheme of the utility model, the becket is copper ring or aluminium alloy ring, non-metallic seal packs and is graphite packing or asbestos packing.
As the utility model discloses a preferred technical scheme, sealed chamber comprises inner core pipe, outer tube and gland, and the inner core pipe is established in the outer tube, and the inner wall of outer tube is equipped with interior flange, the tip of inner core pipe be equipped with interior flange matched with step shape outward flange, the fit-up gap that forms between outward flange and the interior flange is located the intermediate position of sealed chamber bottom.
As the preferred technical scheme of the utility model, be equipped with four layers of becket and the nonmetal sealing filler of three-layer in the sealed intracavity.
As the utility model discloses an optimized technical scheme, gland passes through the becket and is connected with nonmetal sealing packing pressfitting.
The utility model has the advantages that: compared with the prior art, the utility model discloses a soft easy tensile metal clamping ring and nonmetal sealing filler compress tightly under the exogenic action and form the compound connection state, make becket and nonmetal sealing filler radially obtain the expansion simultaneously, the border and the sealed chamber in place or the stuffing box lateral wall of inside and outside both sides closely cooperate to reach and strengthen sealed effect.
During operation, the metal compression ring is placed at the bottom of the sealing cavity, so that direct contact between a high-temperature medium and a high-pressure medium and a nonmetal sealing filler can be isolated, the loss of the nonmetal sealing filler is effectively reduced, and the service life of the sealing filler is prolonged and the sealing effect is enhanced. The metal compression ring forms end face seal in a pressure-bearing state, has small friction force and good sealing effect, and is favorable for flexible operation of the compensator. Not only forming end face seal, but also playing the roles of anti-drop and antifriction.
The utility model discloses have stronger high temperature resistant, high pressure performance, sealing performance is good, and bearing strength is big, long service life, simple to operate. It is especially suitable for high temperature and high pressure heat distribution pipe network, and is safe and reliable in use, and favorable for energy saving and environment protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view at a in fig. 1.
Fig. 3 is a schematic sectional structural view of the seal chamber of the present invention.
Fig. 4 is a schematic structural view of the closed metal ring of the present invention.
Fig. 5 is a schematic structural view of the open C-shaped metal ring of the present invention.
Fig. 6 is a cross-sectional view of the metal ring having a V-shaped cross section.
Fig. 7 is a cross-sectional view of the metal ring with an arc-shaped section.
Fig. 8 is a schematic sectional view of a metal ring with a semicircular section.
Fig. 9 is a schematic diagram of the gradual change of the metal ring pressing process of the present invention.
In the figure: 1. the device comprises an inner core pipe, 2, an outer sleeve, 3, a packing gland, 4, a metal ring, 5, nonmetal sealing packing, 6, an assembly gap, 11, a stepped outer flange, 21 and an inner flange.
Detailed Description
The invention will be further described with reference to the following detailed description of the embodiments with reference to the accompanying drawings:
as shown in fig. 1 to 9, the metal compression ring composite sealing packing device includes a sealing cavity and a sealing packing, the sealing packing is disposed in the sealing cavity, the composite sealing packing device includes a metal ring 4 and a non-metal sealing packing 5, the non-metal sealing packing 5 includes a graphite packing, a fiber packing, and a tetrafluoro packing; the metal ring 4 comprises a closed metal ring or a C-shaped metal ring with one side opened; the metal ring 4 is formed by bending a metal hollow pipe or a metal sheet with a semicircular, arc-shaped or V-shaped section; the metal ring 4 is pressed by external force to flatten the metal ring 4, and the metal ring is radially expanded and deformed, so that the edges of the inner side and the outer side of the metal ring 4 are tightly matched with the side wall of the sealing cavity, and meanwhile, the metal ring 4 is tightly combined with the nonmetal sealing filler 5, thereby achieving the effect of sealing enhancement.
As shown in fig. 3, the composite sealing packing device of the present embodiment includes four layers of metal rings 4 and three layers of non-metal sealing packing 5, the first metal ring is disposed at the bottom of the sealing cavity, the first non-metal sealing packing is disposed on the first metal ring, the second metal ring is disposed between the first non-metal sealing packing and the second non-metal sealing packing, and the third metal ring, the third non-metal sealing packing and the fourth metal ring are sequentially disposed on the second non-metal sealing packing.
The first metal ring is formed by bending a hollow metal pipe, and the second to fourth metal rings are formed by bending V-shaped metal sheets. The first metal ring is a closed metal ring with a welded end, and the second to fourth metal rings are C-shaped metal rings with one side opened. According to different application requirements, the metal ring can flexibly adopt a hollow pipe or a structure with a semicircular, arc-shaped or V-shaped section; the metal ring may also be closed or open-sided C-shaped.
In this embodiment, the metal ring 4 is a copper ring or an aluminum alloy ring, and the non-metal sealing packing 5 is a graphite packing or an asbestos packing. The sealing cavity is composed of an inner core tube 1, an outer sleeve 2 and a packing gland 3, the inner core tube 1 is arranged in the outer sleeve 2, an inner convex ring 21 is arranged on the inner wall of the outer sleeve 2, a step-shaped outer flange 11 matched with the inner convex ring 21 is arranged at the end part of the inner core tube, and an assembly gap 6 formed between the outer flange 11 and the inner convex ring 21 is positioned in the middle of the bottom of the sealing cavity. The packing gland 3 is connected with the nonmetal sealing packing 5 in a pressing mode through a metal ring 4.
The manufacturing method of the metal compression ring composite sealing filler device comprises the following steps:
(1) respectively machining the inner core tube, the outer sleeve and the packing gland according to a drawing so that the inner core tube, the outer sleeve and the packing gland form a sealing cavity;
(2) respectively processing a plurality of metal rings according to a drawing, wherein the plurality of metal rings comprise a first metal ring formed by bending a hollow metal pipe, a second metal ring formed by bending a metal sheet with a semicircular or arc-shaped section and a third metal ring formed by bending a metal sheet with a V-shaped section;
(3) placing a first metal ring at the bottom of the sealed cavity, flattening the first metal ring through a special die, expanding and deforming the first metal ring, and enabling the inner side edge and the outer side edge of the first metal ring to be tightly matched with the side wall of the sealed cavity;
(4) placing a first nonmetal sealing filler on the first metal ring in the step (3), then placing a second metal ring, flattening and expanding the second metal ring through a special die to enable the inner side edge and the outer side edge of the second metal ring to be tightly matched with the side wall of the sealing cavity;
(5) respectively and sequentially placing a second non-metal sealing filler and a third metal ring in the sealing cavity according to the drawing requirements, flattening the third metal ring by a special die, expanding and deforming to enable the inner side edge and the outer side edge of the third metal ring to be tightly matched with the side wall of the sealing cavity;
(6) the third metal ring and the second nonmetal sealing packing are tightly pressed through the packing gland to form tight combination connection, so that the effect of sealing reinforcement is achieved.
In this embodiment, the metal ring is a copper ring or an aluminum alloy ring, and the non-metal sealing packing is a graphite packing or an asbestos packing.
The above embodiments are only for illustrating the conception and technical features of the present invention, and the purpose thereof is to make the technical personnel skilled in the art understand the technical solution and implementation mode of the present invention, and thus the protection scope of the present invention can not be limited thereby. All equivalent substitutions or equivalent changes made according to the technical scheme of the utility model are covered in the protection scope of the utility model.
Claims (8)
1. The utility model provides a compound sealing packing device of metal clamping ring, includes sealed chamber and sealing filler, and sealing filler establishes at sealed intracavity, characterized by: the composite sealing packing device comprises a metal ring and a non-metal sealing packing, wherein the non-metal sealing packing comprises a graphite packing, a fiber packing and a tetrafluoro packing;
the metal ring comprises a closed metal ring or a C-shaped metal ring with one side opened; the metal ring is formed by bending a metal hollow pipe or a metal sheet with a semicircular, arc-shaped or V-shaped section;
the metal ring is pressed by external force to flatten the metal ring, and expand and deform in the radial direction, so that the edges of the inner side and the outer side of the metal ring are tightly matched with the side wall of the sealing cavity, and meanwhile, the metal ring is tightly combined with the nonmetal sealing filler, thereby achieving the effect of strengthening sealing.
2. The metal pressure ring composite seal packing apparatus of claim 1, wherein: the composite sealing packing device comprises at least two layers of metal rings and two layers of non-metal sealing packing, wherein the first metal ring is arranged at the bottom of the sealing cavity, the first non-metal sealing packing is arranged on the first metal ring, and the second metal ring is arranged between the first non-metal sealing packing and the second non-metal sealing packing.
3. The metal pressure ring composite seal packing apparatus of claim 2, wherein: the first metal ring is formed by bending a hollow metal pipe, and the second metal ring is formed by bending a V-shaped metal sheet.
4. The metal pressure ring composite seal packing apparatus of claim 3, wherein: the first metal ring is a closed metal ring with a welded port, and the second metal ring is a C-shaped metal ring with an opening at one side.
5. The metal pressure ring composite seal packing apparatus of claim 2, wherein: the metal ring is a copper ring or an aluminum alloy ring, and the nonmetal sealing filler is a graphite packing or an asbestos packing.
6. The metal pressure ring composite seal packing apparatus of claim 1, wherein: the sealing cavity is composed of an inner core tube, an outer sleeve and a packing gland, the inner core tube is arranged in the outer sleeve, an inner convex ring is arranged on the inner wall of the outer sleeve, a stepped outer flange matched with the inner convex ring is arranged at the end part of the inner core tube, and an assembling gap formed between the outer flange and the inner convex ring is positioned in the middle of the bottom of the sealing cavity.
7. The metal pressure ring composite seal packing apparatus of claim 6, wherein: and four layers of metal rings and three layers of non-metal sealing fillers are arranged in the sealing cavity.
8. The metal pressure ring composite seal packing apparatus of claim 7, wherein: the packing gland is connected with the nonmetal sealing packing in a pressing mode through a metal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921524125.9U CN211059562U (en) | 2019-09-14 | 2019-09-14 | Metal compression ring composite sealing filler device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921524125.9U CN211059562U (en) | 2019-09-14 | 2019-09-14 | Metal compression ring composite sealing filler device |
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| Publication Number | Publication Date |
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| CN211059562U true CN211059562U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921524125.9U Active CN211059562U (en) | 2019-09-14 | 2019-09-14 | Metal compression ring composite sealing filler device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671559A (en) * | 2019-09-14 | 2020-01-10 | 江苏永力管道有限公司 | Metal compression ring composite sealing filler device and manufacturing method thereof |
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2019
- 2019-09-14 CN CN201921524125.9U patent/CN211059562U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671559A (en) * | 2019-09-14 | 2020-01-10 | 江苏永力管道有限公司 | Metal compression ring composite sealing filler device and manufacturing method thereof |
| WO2021047670A1 (en) * | 2019-09-14 | 2021-03-18 | 江苏永力管道有限公司 | Metal-pressure-ring and sealing-packing composite device and manufacturing method therefor |
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