CN211059561U - Pressure-resistant explosion-proof equal-inner-diameter maintenance-free rotary compensator - Google Patents
Pressure-resistant explosion-proof equal-inner-diameter maintenance-free rotary compensator Download PDFInfo
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- CN211059561U CN211059561U CN201921524117.4U CN201921524117U CN211059561U CN 211059561 U CN211059561 U CN 211059561U CN 201921524117 U CN201921524117 U CN 201921524117U CN 211059561 U CN211059561 U CN 211059561U
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Abstract
The utility model discloses the creation relates to internal diameter non-maintaining rotary compensator such as explosion-proof resistance to compression, including outer tube, rotatory core pipe and gland, sealed intracavity is equipped with the sealing filler, and the outer tube is overall structure's reducing pipe, and the outer tube right-hand member is equipped with the less right-hand member pipe of diameter, and right-hand member inside pipe diameter and the equal sealing filler of rotatory core pipe internal diameter are including pressing variable metal ring and nonmetal flexible filler, and pressing variable metal ring produces radial expansion and deformation under the exogenic action, makes its inside and outside both sides limit closely cooperate with sealed chamber lateral wall. The utility model discloses a soft easy tensile pressure change formula becket and nonmetal flexible packing compress tightly under the exogenic action and form composite seal structure, make becket and flexible packing radially obtain the expansion, the border and the sealed chamber lateral wall at place of its inside and outside both sides closely cooperate. The invention has the advantages of strong compression resistance and explosion resistance, good sealing performance, large bearing strength, long service life and convenient installation. Is especially suitable for high temperature and high pressure heating power pipe network, and is safe and reliable to use.
Description
Technical Field
The utility model belongs to the technical field of the pipeline compensator technique and specifically relates to an internal diameter non-maintaining rotary compensator such as explosion-proof of resistance to compression.
Background
The pipe compensator generally needs to adopt a sealing filler to keep the pipe sealed and prevent the medium from leaking. The existing sleeve compensator compensates the displacement of a pipeline through the extension of the sliding core pipe, the sealing between the sliding core pipe and the filler cannot 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 lower strength of the traditional sealing packing and the action of the high-temperature and high-pressure media. On the other hand, the assembly gap of the conventional pipe compensator is usually designed to be tightly attached to the outer surface of the inner core pipe, and in the working process, a medium can permeate to the root of the sealing filler along the assembly gap, so that the sealing filler is accelerated to be lost and blown away. The labyrinth effect failure of the function of preventing the medium leakage is easily caused by the design, so that the loss of the sealing packing of the compensator is large, the leakage is easy, and the service life is short.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a have stronger high pressure resistance ability, sealed effectual, the operation is nimble, long service life, simple to operate's internal diameter non-maintaining rotary compensator such as explosion-proof of resistance to compression.
The purpose of the utility model is realized by adopting the following technical scheme:
the pressure-resistant and explosion-proof maintenance-free rotary compensator with equal inner diameter comprises an outer sleeve, a rotary core pipe and a packing gland, wherein the rotary core pipe is arranged in the outer sleeve, a packing sealing cavity is formed by the end surface of the packing gland, the inner surface of the outer sleeve and the outer surface of the rotary core pipe, sealing packing is arranged in the sealing cavity, the outer sleeve is a reducer pipe with an integral structure, the left end of the outer sleeve is arranged as a large sleeve, the left end of the large sleeve is provided with a left flange, the right end of the outer sleeve is provided with a right-end pipe with smaller diameter, an arc-shaped transition surface is arranged between the large sleeve and the right-end; the sealing packing comprises a pressure variable metal ring and a nonmetal flexible packing, and the pressure variable metal ring radially expands and deforms under the action of external force to enable the inner side edge and the outer side edge of the pressure variable metal ring to be tightly matched with the side wall of the sealing cavity; meanwhile, the pressure variable metal ring is tightly combined with the nonmetal flexible packing, so that the sealing effect is achieved.
As the preferred technical proposal of the utility model, the pressure-variable metal ring is formed by bending a hollow metal tube or a metal sheet with a semicircular, arc-shaped or V-shaped cross section.
As the preferred technical proposal of the utility model, the metal hollow tube comprises a hollow round tube or an oval hollow tube; the pressure-variable metal ring comprises a closed metal ring or a C-shaped metal ring with one side opened.
As the utility model discloses a preferred technical scheme, the seal packing includes that at least two layers press variable formula becket and the nonmetal flexible packing of one deck, and the first bottom of pressing variable formula becket to establish in sealed chamber is then in proper order first nonmetal flexible packing, the second presses variable formula becket.
As the preferred technical scheme of the utility model, the distance of the right-hand member of rotatory core pipe to the right-hand member pipe top of outer tube is L1, and the distance of right-hand member pipe top to the root of circular arc transition face is L2, L2 is greater than 50mm, L1-L2 ═ L3, L3 is less than twice of right-hand member pipe wall thickness, and the quadruple of right-hand member pipe wall thickness is less than 50 mm.
As the utility model discloses an optimized technical scheme, the surface of outer tube is equipped with the flexible filler and annotates the material mouth, annotate the material mouth with the sealed chamber intercommunication of packing is equipped with only round pin and plug screw on annotating the material mouth.
As the utility model discloses a preferred technical scheme, the inner wall of outer tube is equipped with interior annular, the tip of rotatory core pipe be equipped with interior annular matched with step outer flange, the fit-up gap that forms between outer flange and the interior annular is located the intermediate position of sealed chamber bottom.
As the utility model discloses a preferred technical scheme, press variable metal ring to be copper ring or aluminium alloy ring, nonmetal flexible packing is graphite packing or asbestos packing.
As the utility model discloses a preferred technical scheme, through locking bolted connection and fastening between the left flange of outer tube and the gland.
As the preferred technical scheme of the utility model, outer tube, rotatory core pipe and gland all are the integrated into one piece's overall structure.
The utility model has the advantages that: compared with the prior art, the utility model discloses a soft easy tensile presses variable metal ring and nonmetal flexible packing to compress tightly under the exogenic action and form composite seal structure, makes metal ring and flexible packing radially obtain the expansion, and the border and the sealed chamber lateral wall at place of its inside and outside both sides closely cooperate to reach the sealed effect of reinforcing.
When the compensator works, the pressure-variable metal ring is placed at the bottom of the sealing cavity, so that the direct contact of high-temperature and high-pressure media and the flexible sealing filler can be separated, the loss of the flexible filler is effectively reduced, and the effects of prolonging the service life of the sealing filler and strengthening the sealing are achieved. The utility model discloses have stronger resistance to compression explosion-proof 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.
In the figure: 1. the device comprises a rotating core pipe, 2 a locking bolt, 3 a packing gland, 4 a material injection nozzle, 5 a flexible packing, 6 a pressure-variable metal ring, 7 an outer sleeve, 11 a stepped outer flange, 71 a left flange, 72 an inner flange, 73 a right end pipe.
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, the internal diameter maintenance-free rotary compensator with compression resistance, explosion resistance and the like comprises an outer sleeve 7, a rotary core tube 1 and a packing gland 3, wherein the rotary core tube 1 is arranged in the outer sleeve 7, the end surface of the packing gland 3, the inner surface of the outer sleeve 7 and the outer surface of the rotary core tube 1 form a packing sealing cavity, sealing packing is arranged in the sealing cavity, the outer sleeve 7 is a reducer tube with an integral structure, the left end of the outer sleeve 7 is provided with a large sleeve, the left end of the large sleeve is provided with a left flange 71, the right end of the outer sleeve is provided with a right end tube 73 with a smaller diameter, an arc transition surface is arranged between the large sleeve and the right end tube 73, and; the sealing packing comprises a pressure variable metal ring 6 and a nonmetal flexible packing 5, and the pressure variable metal ring 6 radially expands and deforms under the action of external force, so that the inner side edge and the outer side edge of the pressure variable metal ring are tightly matched with the side wall of the sealing cavity; meanwhile, the pressure-variable metal ring 6 is tightly combined with the nonmetal flexible packing 5, so that the effect of enhancing sealing is achieved.
In this embodiment, the pressure-variable metal ring 6 is formed by bending a hollow metal pipe or a metal sheet with a semicircular, arc-shaped or V-shaped cross section. The metal hollow pipe comprises a hollow round pipe or an oval hollow pipe; the pressure-variable metal ring 6 comprises a closed metal ring or a C-shaped metal ring with one side opened. The sealing filler comprises two layers of pressure variable metal rings 6 and one layer of nonmetal flexible filler 5, wherein the first pressure variable metal ring is arranged at the bottom of the sealing cavity, and then the first nonmetal flexible filler and the second pressure variable metal ring are sequentially arranged.
The distance from the right end of the rotating core tube 1 to the top end of the right end tube 73 of the outer sleeve 7 is L1, the distance from the top end of the right end tube 73 to the root of the circular arc transition surface is L2, L2 is greater than 50mm, L1-L2 is L3, L3 is smaller than twice the wall thickness of the right end tube 73, four times the wall thickness of the right end tube 73 is smaller than 50mm, the outer surface of the outer sleeve 7 is provided with a flexible filler injection nozzle 4, the injection nozzle 4 is communicated with the filler sealing cavity, and the injection nozzle 4 is provided with a stop pin and a screw plug.
An inner convex ring 72 is arranged on the inner wall of the outer sleeve 7, a step-shaped outer flange 11 matched with the inner convex ring 72 is arranged at the end part of the rotating core tube 1, and an assembly gap formed between the outer flange 11 and the inner convex ring 72 is positioned in the middle of the bottom of the sealing cavity. The pressure-variable metal ring 6 is a copper ring or an aluminum alloy ring, and the non-metal flexible packing 5 is a graphite packing or an asbestos packing. The left flange 71 of the outer sleeve 7 is connected and fastened with the packing gland 3 through a locking bolt 2; the outer sleeve 7, the rotary core tube 1 and the packing gland 3 are all integrally formed integral structures.
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 (10)
1. The utility model provides an internal diameter non-maintaining rotary compensator such as explosion-proof of resistance to compression, includes outer tube, rotatory core pipe and gland, and rotatory core pipe is established at the outer tube intraductally, and gland's terminal surface constitutes the packing seal chamber with the internal surface of outer tube, the surface of rotatory core pipe, is equipped with sealing filler, characterized by in the seal chamber: the outer sleeve is a reducer pipe with an integral structure, the left end of the outer sleeve is provided with a large sleeve, the left end of the large sleeve is provided with a left flange, the right end of the outer sleeve is provided with a right end pipe with a smaller diameter, an arc-shaped transition surface is arranged between the large sleeve and the right end pipe, and the inner diameter of the right end pipe is equal to that of the rotating core pipe;
the sealing packing comprises a pressure variable metal ring and a nonmetal flexible packing, and the pressure variable metal ring radially expands and deforms under the action of external force to enable the inner side edge and the outer side edge of the pressure variable metal ring to be tightly matched with the side wall of the sealing cavity; meanwhile, the pressure variable metal ring is tightly combined with the nonmetal flexible packing, so that the sealing effect is achieved.
2. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 1, wherein: the pressure-variable metal ring is formed by bending a hollow metal pipe or a metal sheet with a semicircular, arc-shaped or V-shaped section.
3. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 2, wherein: the metal hollow pipe comprises a hollow round pipe or an oval hollow pipe; the pressure-variable metal ring comprises a closed metal ring or a C-shaped metal ring with one side opened.
4. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 1, wherein: the sealing packing comprises at least two layers of variable metal rings and a layer of non-metal flexible packing, wherein the first variable metal ring is arranged at the bottom of the sealing cavity, and then the first non-metal flexible packing and the second variable metal ring are sequentially arranged.
5. The pressure-resistant explosion-proof equal-inner-diameter maintenance-free rotary compensator as claimed in any one of claims 1 to 4, wherein the distance from the right end of the rotary core tube to the top end of the right end tube of the outer sleeve is L1, the distance from the top end of the right end tube to the root of the circular arc transition surface is L2, L2 is more than 50mm, L1-L2 is L3, L3 is less than twice the wall thickness of the right end tube, and four times the wall thickness of the right end tube is less than 50 mm.
6. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 1, wherein: the outer surface of the outer sleeve is provided with a flexible filler injection nozzle which is communicated with the filler sealing cavity, and the injection nozzle is provided with a stop pin and a screw plug.
7. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 1, wherein: an inner convex ring is arranged on the inner wall of the outer sleeve, a step-shaped outer flange matched with the inner convex ring is arranged at the end part of the rotating core tube, and an assembly gap formed between the outer flange and the inner convex ring is positioned in the middle of the bottom of the sealing cavity.
8. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 1, wherein: the pressure-variable metal ring is a copper ring or an aluminum alloy ring, and the non-metal flexible packing is a graphite packing or an asbestos packing.
9. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 1, wherein: and the left flange of the outer sleeve is connected and fastened with the packing gland through a locking bolt.
10. The pressure-resistant explosion-proof constant-inner-diameter maintenance-free rotary compensator as claimed in claim 9, wherein: the outer sleeve, the rotating core pipe and the packing gland are all integrally formed integral structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921524117.4U CN211059561U (en) | 2019-09-14 | 2019-09-14 | Pressure-resistant explosion-proof equal-inner-diameter maintenance-free rotary compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921524117.4U CN211059561U (en) | 2019-09-14 | 2019-09-14 | Pressure-resistant explosion-proof equal-inner-diameter maintenance-free rotary compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211059561U true CN211059561U (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921524117.4U Active CN211059561U (en) | 2019-09-14 | 2019-09-14 | Pressure-resistant explosion-proof equal-inner-diameter maintenance-free rotary compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211059561U (en) |
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2019
- 2019-09-14 CN CN201921524117.4U patent/CN211059561U/en active Active
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