CN211118245U - Sealing device for flow channel and fluid equipment - Google Patents
Sealing device for flow channel and fluid equipment Download PDFInfo
- Publication number
- CN211118245U CN211118245U CN201922017429.2U CN201922017429U CN211118245U CN 211118245 U CN211118245 U CN 211118245U CN 201922017429 U CN201922017429 U CN 201922017429U CN 211118245 U CN211118245 U CN 211118245U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- annular
- sealing device
- flow passage
- sealing structure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Abstract
The utility model relates to a sealing device and fluidic device for runner. The flow passage comprises a first cylinder and a second cylinder sleeved on at least part of the periphery of the first cylinder, and an annular chamber is formed between the first cylinder and the second cylinder; the sealing device comprises an elastic sealing structure arranged between the first cylinder and the second cylinder; the elastic sealing structure is respectively abutted with the first cylinder and the second cylinder to seal the annular chamber along the radial direction. This a sealing device for runner sets up elastic sealing structure through the annular cavity that forms between first barrel and second barrel to with this elastic sealing structure respectively with this first barrel and this second barrel butt, thereby can seal this annular cavity, improve this annular cavity's sealing performance. Because the elastic sealing structure has certain resilience force, the elastic sealing structure is not easy to be scratched and has the advantages of simple structure, high reliability, long service life, no need of regular inspection and replacement, difficulty in manufacturing and low manufacturing cost.
Description
Technical Field
The utility model relates to a nuclear power or petrochemical trade field, more specifically say, relate to a sealing device and fluid equipment for runner.
Background
At present, in equipment in nuclear power or petrochemical industry, a rigid sealing structure such as a heat exchanger or a pipeline is usually adopted to seal an annular cavity of an internal flow passage in the heat exchanger or the pipeline, the sealing structure mainly adopts end face sealing, the sealing is realized by pressing and tightening other parts, the sealing structure is easy to scratch, the service life is short, the equipment needs to be overhauled and replaced at regular intervals, and the sealing structure is not suitable for sealing the annular cavity in a container or a pipeline. And the sealing structure is inconvenient to be frequently lifted out for maintenance and replacement.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the present invention is to provide an improved sealing device for a flow channel, and further provide a fluid device.
The utility model provides a technical scheme that its technical problem adopted is: constructing a sealing device for a flow passage, which comprises a first cylinder and a second cylinder sleeved on at least part of the first cylinder; an annular chamber is formed between the first cylinder and the second cylinder; the sealing device comprises an elastic sealing structure arranged between the first cylinder and the second cylinder;
the elastic sealing structure is respectively connected with the first cylinder and the second cylinder to seal the annular chamber along the radial direction.
Preferably, the resilient sealing structure comprises a resilient annular body; the annular body is sleeved on the periphery of the first cylinder body.
Preferably, the resilient sealing structure further comprises a spacer disposed in the annular chamber; the separator is sleeved on the periphery of the first cylinder, and the inner side wall and the outer side wall of the separator are respectively attached to the first cylinder and the second cylinder;
the annular body is sleeved on the periphery of the isolating piece; or the spacer is sleeved on the periphery of the annular body.
Preferably, the spacer comprises a spacer portion disposed radially in the annular chamber, and a fitting portion connected to the spacer portion and extending axially to fit the annular body;
the matching part is sleeved on the periphery of the annular body.
Preferably, one surface of the matching part matched with the annular body is an arc surface protruding towards the annular body.
Preferably, the outer side wall of the first cylinder is provided with a first annular groove for accommodating the annular body;
the shape and the size of the first annular groove are matched with the shape and the size of the annular body.
Preferably, the groove depth of the first annular groove is greater than the thickness of the annular body to leave a gap with the annular body for supply force release.
Preferably, the inner side wall of the second cylinder is provided with a second annular groove for accommodating the annular body;
the shape and the size of the second annular groove are matched with the shape and the size of the annular body.
Preferably, the annular body is provided with an opening.
Preferably, the outer side wall of the annular body is provided with a thread groove.
Preferably, the sealing device for a flow passage further includes a fixing assembly fixing the elastic sealing structure to the first cylinder or the second cylinder.
Preferably, the first cylinder comprises a main body part and an insertion part which is arranged at one end of the main body part and is inserted into the second cylinder;
the body portion has a shape and a radial dimension equivalent to the second cylindrical shape and the radial dimension;
the radial dimension of the insertion portion is smaller than that of the second cylinder;
the annular chamber is formed between the insert and the second cylinder.
The fluid equipment is also constructed, and comprises a flow passage and the sealing device for the flow passage; the flow passage comprises a first cylinder and a second cylinder sleeved on at least part of the periphery of the first cylinder; an annular chamber is formed between the first cylinder and the second cylinder; the elastic sealing structure of the sealing device for the flow passage is arranged on the elastic sealing structure between the first cylinder and the second cylinder and is respectively connected with the first cylinder and the second cylinder so as to seal the annular chamber along the radial direction.
Implement the utility model discloses a fluid equipment and be used for sealing device of runner thereof has following beneficial effect: this a sealing device for runner sets up elastic sealing structure through the annular cavity that forms between first barrel and second barrel to with this elastic sealing structure respectively with this first barrel and this second barrel butt, thereby can seal this annular cavity, improve this annular cavity's sealing performance, solve the inaccessible problem in annular cavity's space. Because of the elastic sealing structure has certain resilience force, the elastic sealing structure is not easy to be scratched and does not need to be frequently taken out for overhauling and replacing, and the elastic sealing structure has the advantages of simple structure, high reliability, long service life, low manufacturing difficulty and manufacturing cost and easy assembly.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a partial cross-sectional view of a first embodiment of the fluid device of the present invention;
FIG. 2 is an enlarged schematic view of a portion of the fluidic device I shown in FIG. 1;
FIG. 3 is a schematic view of the annular body of the resilient sealing structure of FIG. 1;
FIG. 4 is an enlarged partial schematic view of the annular body shown in FIG. 3;
fig. 5 is a cross-sectional view of a second embodiment of the fluid device of the present invention;
fig. 6 is a partial cross-sectional view of a second embodiment of the fluid device of the present invention;
FIG. 7 is an enlarged schematic view of a portion of the fluidic device I shown in FIG. 6;
fig. 8 is a partial cross-sectional view of a third embodiment of the fluid device of the present invention;
fig. 9 is a partial cross-sectional view of a fourth embodiment of the fluid device of the present invention;
fig. 10 is an enlarged schematic view of a portion I of the fluidic device shown in fig. 9.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 to 4 show a first embodiment of a fluid device of the present invention, which can be used in the nuclear power field or in the petrochemical field, and which, in this embodiment, can be a heat exchanger, and, understandably, in other embodiments, can be a pipe. The fluid equipment has the advantages of good sealing performance and long service life. In this embodiment, the fluidic device may comprise a flow channel and a sealing means for the flow channel.
As shown in fig. 1 and 2, the flow passage may include a first cylinder 11 and a second cylinder 12; the second cylinder 12 can be disposed around at least a portion of the first cylinder 11, and in this embodiment, it can be disposed around the entire first cylinder 11, and a space is left between the second cylinder and the first cylinder 11, and the space can form the annular chamber 121. The sealing device for the flow passage comprises an elastic sealing structure 13, wherein the elastic sealing structure 13 can be arranged between the first cylinder 11 and the second cylinder 12, is respectively abutted against the first cylinder 11 and the second cylinder 12, can radially seal the annular chamber, and divides the annular chamber into an upper chamber and a lower chamber.
Further, in this embodiment, the first cylinder 11 is a cylindrical body and has a hollow structure, and a first annular groove 111 may be formed on an outer side wall of the first cylinder 11; the first annular groove 111 may be disposed along the circumference of the first cylinder 11, and may be used to mount the elastic sealing structure 13, so as to limit the elastic sealing structure 13.
Further, in the present embodiment, the outer diameter of the second cylinder 12 may be larger than the outer diameter of the first cylinder 11, and a fluid inlet may be disposed thereon, through which fluid may enter the annular chamber 121, and the fluid inlet may be located at an upper portion of the annular chamber 121 and at an upper portion of the elastic sealing structure 13, so that fluid may flow in the upper chamber of the annular chamber 121.
Further, in this embodiment, the elastic sealing structure 13 has a certain elasticity, which can reduce the requirement of dimensional accuracy and the manufacturing difficulty, and has a certain compensation capability, so that during installation and manufacturing, the dimensional deviation of the manufacturing link can be supplemented, the manufacturing difficulty and the manufacturing cost can be reduced, and the elastic sealing structure has strong reliability, is not easy to scratch and has a long service life. The interior of the general equipment is inconvenient to check and replace frequently, the cleanliness requirement of the internal fluid is high, corrosive elements are not allowed to be brought in, and therefore materials of the elastic sealing structure 13 must be selected to avoid corroding fluid media. The elastic sealing structure 13 is used for an internal flow passage of the equipment, allows a little leakage, and can control the leakage rate through parameters such as structure size, manufacturing precision, surface rough manufacturing and the like.
Specifically, in the present embodiment, the elastic sealing structure 13 may include an annular body 131, and a spacer 132; the ring body 131 has a certain elasticity, and can be made of an elastic material, in this embodiment, it is made of a corrosion-resistant metal material, and it can be formed by winding a thin strip made of a metal plate or a bar, and it can be understood that other processes can be used in other embodiments, but it is necessary to ensure the resilience of the sealing structure. In this embodiment, the elastic sealing structure can be sleeved on the periphery of the first cylinder 11, has a certain compensation capability, can supplement the size deviation of a manufacturing link during installation and manufacturing, reduces the manufacturing difficulty, has strong reliability, is not easy to scratch, has long service life, and is convenient to replace and maintain. The isolating member 132 is disposed in the annular chamber 121, and the cross section thereof may be annular, and it may be sleeved on the periphery of the first cylinder 11, and the inner and outer sidewalls thereof are respectively attached to the first cylinder 11 and the second cylinder 12, so as to isolate the annular chamber 121 into two chambers and seal the annular chamber 121. In this embodiment, the isolation member 132 can be sleeved on the periphery of the annular body 131, and the axial length of the isolation member 132 is greater than the axial length of the annular body 131, so that a part of the inner sidewall of the isolation member is attached to the first cylinder 11. It is understood that in other embodiments, the spacer 132 is not limited to be disposed around the ring-shaped body 131, and in other embodiments, the ring-shaped body 131 may be disposed around the spacer 132.
As shown in fig. 3 and 4, in the present embodiment, the annular body 131 is accommodated in the first annular groove 111, and the shape and size of the annular body 131 are adapted to the shape and size of the first annular groove 111, so as to achieve sealing, specifically, the axial length of the annular body 131 is equivalent to the axial length of the first annular groove 111, the thickness of the annular body 131 is smaller than the depth of the first annular groove 111, so as to leave a gap with the bottom wall of the first annular groove 111 for releasing the force, so that the entire annular body 131 is disposed in the first annular groove 111, the annular body 131 is proximate to the spacer 132, and the end surfaces of the two ends of the annular body 131 are proximate to the top wall and the side wall of the first annular groove 111, so as to improve the sealing effect. The ring 131 has an opening 1311; the openings 1311 may be radially disposed and may be used to increase the elasticity of the ring body 131 to facilitate the installation of the ring body 131. It is understood that in other embodiments, the opening 1311 may be omitted.
As shown in fig. 2, in the present embodiment, the isolation element 132 may be made of a metal material, but it should be understood that in other embodiments, the material of the isolation element 132 may not be limited to a metal material. In this embodiment, the partition 132 may include a partition portion 1321 and a fitting portion 1322; the partition 1321 may be radially disposed in the annular chamber 121, and may partition the annular chamber 121 into upper and lower chambers. In this embodiment, the isolation portion 1321 may be annular, and its inner sidewall may be attached to the outer sidewall of the first cylinder, and its outer sidewall may be attached to the inner sidewall of the second cylinder 12. The engaging portion 1322 may be connected to the isolating portion 1321, may extend in the axial direction, may have a cylindrical shape, and has an outer diameter smaller than that of the isolating portion 1321, the engaging portion 1322 may be integrally formed with the isolating portion 1321, and the engaging portion 1322 may be configured to engage with the annular body 131, and may be disposed around the outer periphery of the annular body 131. The inner wall of the engaging portion 1322 can be attached to the outer wall of the first barrel 11. The surface of the engaging portion 1322 engaging with the annular body 131 may be an arc surface, and the arc surface may be protruded toward the annular body 131 to press the annular body 131 to form a tight fit with the annular body 131. It is understood that in other embodiments, the surface of the engaging portion 1322 that engages with the ring body 131 is not limited to a curved surface, and may be a flat surface. The ring body 131 is tightly coupled to the partition 1322 by generating a resilient force after being assembled, thereby achieving sealing.
In other embodiments, when the annular body 131 is disposed around the periphery of the isolating member 132 or the isolating member 132 is omitted, a second annular groove may be further formed in the second cylinder 12, the second annular groove may be disposed on an inner sidewall of the second cylinder 12 and disposed along a circumferential direction of the second cylinder 12, a shape and a size of the second annular groove may be matched with a shape and a size of the annular body 131, specifically, an axial length of the second annular groove may be equivalent to an axial length of the annular body 131, and a depth of the second annular groove may be equivalent to a thickness of the annular body 131 or greater than a thickness of the annular body 131.
Fig. 5 to 7 show a second embodiment of the fluid device of the present invention, which is different from the first embodiment in that the sealing means for a flow passage may further include a fixing member 14; the fixing assembly 14 may be disposed on the elastic sealing structure 13 and the first cylinder 11, and may be used to fix the elastic sealing structure 13 on the first cylinder 11. Specifically, in this embodiment, the fixing assembly 14 may be disposed on the ring body 131 and the first cylinder 11, and may be used to connect the ring body 131 and the first cylinder 11. In this embodiment, the fixing component 14 can be a plurality of screws, and the screws can be inserted into the annular body 131 and the first cylinder 11 to connect the annular body 131 and the first cylinder 11. It will be appreciated that in other embodiments, the fixation assembly 14 may not be limited to screws.
In other embodiments, the fixing assembly 14 is not limited to be disposed on the elastic sealing structure 13 and the first cylinder 11, and may be disposed on the elastic sealing structure 13 and the second cylinder 12. Specifically, when the spacer is omitted, or when the ring body 131 is sleeved on the periphery of the spacer, the fixing element 14 may be disposed on the ring body 131 and the second cylinder 12 to connect the ring body 131 and the second cylinder 12.
Fig. 8 shows a second embodiment of the inventive fluid device, which differs from the first embodiment in that the outer side wall of the ring-shaped body 131 may be provided with a thread groove 1312; the screw groove 1312 may be disposed opposite to an inner sidewall of the partition 1322 of the partition 132, which may serve to reduce the manufacturing cost of the ring body 131. It is understood that in other embodiments, the thread groove 1312 may be omitted, and the outer sidewall of the ring body 131 may be further provided with threads, which may be used to increase the roughness of the inner sidewall of the ring body 131 and the partition 1322, thereby improving the tightness of the fit.
Fig. 9 and 10 show a third embodiment of the fluid device of the present invention, in this embodiment, the fluid device may be a pipeline, and the first cylinder 11 and the second cylinder 12 are both hollow and have two ends penetrating through each other. In this embodiment, the first barrel 11 may include a main body 112 and an insertion portion 113; the body portion 112 may have a shape and radial size corresponding to those of the second cylinder 12, and may be disposed at one end of the first cylinder 11. The insertion portion 113 may be disposed at one end of the main body portion 112, and specifically, may be located at an end where the main body portion 112 is connected to the first cylinder 11, and may be integrally formed with the main body portion 112, and may have a radial dimension smaller than that of the second cylinder 12 so as to be inserted into the second cylinder 12, and a space is left between an outer sidewall thereof and the second cylinder 12. In the present embodiment, the annular chamber 121 may be formed between the insertion portion 113 and the second cylinder 12, and particularly, it may be formed by a space between the insertion portion 113 and the second cylinder 12. The first annular groove 111 may be disposed at an outer sidewall of the insertion portion 113, and it may be disposed along a circumferential direction of the insertion portion 113.
In this embodiment, the spacer 132 can be omitted, the annular body can be disposed in the first annular groove 111 and sleeved on the periphery of the insertion portion 113, one side of the annular body abuts against the inner sidewall of the second cylinder 12, the other side abuts against the bottom wall of the first annular groove 111, and the annular body can be tightly squeezed with the insertion portion 113 and the second cylinder 12 under the action of the resilient force, thereby sealing the annular chamber 121.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (13)
1. A sealing device for a flow passage, characterized in that the flow passage comprises a first cylinder (11) and a second cylinder (12) arranged around at least part of the first cylinder (11); an annular chamber (121) is formed between the first cylinder (11) and the second cylinder (12); the sealing device comprises an elastic sealing structure (13) arranged between the first cylinder (11) and the second cylinder (12);
the elastic sealing structure (13) is connected with the first cylinder (11) and the second cylinder (12) respectively to seal the annular chamber (121) along the radial direction.
2. A sealing device for a flow passage according to claim 1, characterized in that the elastic sealing structure (13) comprises an elastic ring-shaped body (131); the annular body (131) is sleeved on the periphery of the first cylinder body (11).
3. The sealing device for a flow passage according to claim 2, wherein the elastic sealing structure (13) further comprises a partition (132) provided in the annular chamber (121); the isolating piece (132) is sleeved on the periphery of the first cylinder (11), and the inner side wall and the outer side wall of the isolating piece are respectively attached to the first cylinder (11) and the second cylinder (12);
the annular body (131) is sleeved on the periphery of the isolating piece (132); or the isolating piece (132) is sleeved on the periphery of the annular body (131).
4. A sealing device for a flow passage according to claim 3, wherein the partition (132) comprises a partition (1321) arranged radially in the annular chamber (121), and an engaging portion (1322) connected to the partition (1321) and extending axially for engaging with the annular body (131);
the matching part (1322) is sleeved on the periphery of the annular body (131).
5. The sealing device for a flow passage according to claim 4, wherein a surface of the fitting portion (1322) that fits the annular body (131) is an arc surface that is convexly provided toward the annular body (131).
6. The sealing device for a flow passage according to claim 2, wherein the outer side wall of the first cylinder (11) is provided with a first annular groove (111) for accommodating the annular body (131);
the shape and the size of the first annular groove (111) are matched with the shape and the size of the annular body (131).
7. The sealing device for a flow channel according to claim 6, characterized in that the groove depth of the first annular groove (111) is larger than the thickness of the annular body (131) to leave a clearance with the annular body (131) for supply force relief.
8. The sealing device for a flow passage according to claim 2, wherein the inner side wall of the second cylinder (12) is provided with a second annular groove for accommodating the annular body (131);
the shape and size of the second annular groove are matched with the shape and size of the annular body (131).
9. A sealing device for a flow passage according to claim 2, wherein the ring-shaped body (131) is provided with an opening (1311).
10. The sealing device for a flow passage according to claim 2, wherein an outer side wall of the ring body (131) is provided with a thread groove (1312).
11. The sealing device for a flow channel according to claim 1, characterized in that it further comprises a fixing assembly (14) fixing the elastic sealing structure (13) to the first cylinder (11) or the second cylinder (12).
12. The sealing device for a flow passage according to claim 1, wherein the first cylinder (11) comprises a main body portion (112) and an insertion portion (113) provided at one end of the main body portion (112) and inserted into the second cylinder (12);
the body portion (112) has a shape and radial dimensions comparable to those of the second cylinder (12);
the radial dimension of the insertion portion (113) is smaller than the radial dimension of the second cylinder (12);
the annular chamber (121) is formed between the insert (113) and the second cylinder (12).
13. A fluid device comprising a flow channel, and a sealing device for a flow channel according to any one of claims 1 to 12; the flow passage comprises a first cylinder (11) and a second cylinder (12) sleeved on at least part of the periphery of the first cylinder (11); an annular chamber (121) is formed between the first cylinder (11) and the second cylinder (12); the elastic sealing structure (13) of the sealing device for the flow passage is provided with the elastic sealing structure (13) between the first cylinder (11) and the second cylinder (12) and is respectively connected with the first cylinder (11) and the second cylinder (12) to seal the annular chamber (121) along the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922017429.2U CN211118245U (en) | 2019-11-19 | 2019-11-19 | Sealing device for flow channel and fluid equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922017429.2U CN211118245U (en) | 2019-11-19 | 2019-11-19 | Sealing device for flow channel and fluid equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211118245U true CN211118245U (en) | 2020-07-28 |
Family
ID=71692667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922017429.2U Active CN211118245U (en) | 2019-11-19 | 2019-11-19 | Sealing device for flow channel and fluid equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211118245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570390A (en) * | 2020-12-01 | 2021-03-30 | 山东理工大学 | Cable conduit mouth of pipe clearance and plugging device |
-
2019
- 2019-11-19 CN CN201922017429.2U patent/CN211118245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570390A (en) * | 2020-12-01 | 2021-03-30 | 山东理工大学 | Cable conduit mouth of pipe clearance and plugging device |
| CN112570390B (en) * | 2020-12-01 | 2022-04-22 | 山东理工大学 | Cable conduit mouth of pipe clearance and plugging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10570934B2 (en) | Fluidic cylinder | |
| US11067192B2 (en) | Diaphragm valve structure and thermal isolation method thereof | |
| CN103075587A (en) | Dual-sealing flange | |
| CN211118245U (en) | Sealing device for flow channel and fluid equipment | |
| US8967234B2 (en) | Tube plug for a heat exchanger tube | |
| KR20010087214A (en) | Structure of fluid passage output port of fluid-operated apparatus | |
| KR20080102162A (en) | Sealed flange joint for high pressure and high purity gas channels | |
| US8863973B2 (en) | Sealing structure | |
| US4296954A (en) | Pipe coupling and pipe joint connection | |
| CN107023724B (en) | Sealing connection device | |
| CN210003996U (en) | quick joint | |
| CN217683769U (en) | Connecting component of hydraulic pipeline | |
| CN210128653U (en) | Sealing device and heat exchanger comprising same | |
| CN110762220A (en) | Sealing assembly | |
| CN110685631A (en) | Sealing device for oil field well head conduit and casing pipe annulus | |
| CN111006021A (en) | Sealing device | |
| CN217634350U (en) | Thermal power plant drain valve convenient to dismantle | |
| CN110671353A (en) | Double-layer isolation sleeve for magnetic pump | |
| CN215410311U (en) | Corrosion-resistant ball valve | |
| CN219734523U (en) | Connecting joint | |
| CN213776478U (en) | High-temperature stop check valve | |
| CN211715989U (en) | Gasket structure for flange reinforcement | |
| CN219242893U (en) | High corrosion-resistant stainless steel casting of precision | |
| KR101186550B1 (en) | Pipe coupling assembly | |
| CN218267876U (en) | Tetrafluoroethylene lining pipeline elbow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |