CN214534971U - High-pressure pipe fitting with improved generation seal structure - Google Patents
High-pressure pipe fitting with improved generation seal structure Download PDFInfo
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- CN214534971U CN214534971U CN202120298242.9U CN202120298242U CN214534971U CN 214534971 U CN214534971 U CN 214534971U CN 202120298242 U CN202120298242 U CN 202120298242U CN 214534971 U CN214534971 U CN 214534971U
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Abstract
The utility model provides a high-pressure pipe fitting with improved generation seal structure, including barrel, blind flange and seal ring, the barrel cavity sets up, and its left and right ends opening, be provided with the several screw hole on the terminal surface at the left and right ends of barrel respectively, be provided with the counter bore on the terminal surface at the left and right ends of barrel, seal ring sets up in the counter bore, be provided with the boss on the terminal surface of blind flange one end, be provided with the several screw thread through-holes on the lateral wall of blind flange, the screw thread through-hole is located the outside of boss; the high-pressure pipe fitting with the improved sealing structure provided by the utility model reduces the whole assembly difficulty of the high-pressure pipe fitting and saves the assembly time; the sealing washer is fixed by the inner wall of the cylinder body, so that the sealing washer is effectively prevented from being extruded out of the sealing surface to cause leakage; the sealing structure in the concave-convex surface form has higher sealing and bearing capacity.
Description
Technical Field
The utility model belongs to the technical field of the pipe fitting technique and specifically relates to a high-pressure pipe fitting with improved generation seal structure is related to.
Background
High-pressure pipes are, as their name implies, pipes with a relatively high pressure resistance. The chemical standard of China refers to a pipeline with the bearing pressure of more than or equal to 16MPa as a high-pressure pipeline. The high-pressure pipe fitting is used in specific environment such as high-pressure steam equipment, high-temperature and high-pressure chemical pipelines, pressure vessels of power plants and nuclear power plants, high-pressure boiler fittings and the like, and can be divided into three-way pipe fittings, four-way pipe fittings and the like according to the number of openings on the high-pressure pipe fitting, and the openings of the three-way pipe fittings and the four-way pipe fittings are communicated, namely, the three-way pipe fittings and the four-way pipe fittings are provided with one inlet and a plurality of outlets.
Because the high-pressure pipe fitting is used in a high-pressure working condition for a long time, the requirement on sealing is stricter in the using process under the action of fatigue load, and particularly the maximum leakage point is always at the flange connecting surface. According to the current manufacturing situation, the leakage at the sealing surface of the high-pressure pipe fitting is the most main failure mode in the whole pipe fitting, and the processing and protection at the sealing surface are also main links in the manufacturing and using processes of the whole high-pressure pipe fitting.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the high-pressure pipe fitting with the improved sealing structure provided by the utility model reduces the whole assembly difficulty of the high-pressure pipe fitting and saves the assembly time; the sealing washer is fixed by the inner wall of the cylinder body, so that the sealing washer is effectively prevented from being extruded out of the sealing surface to cause leakage; the sealing structure in the concave-convex surface form has higher sealing and bearing capacity.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a high-pressure pipe fitting with improved generation seal structure, includes the barrel, blind flange and seal ring, barrel cavity sets up, and controls both ends opening about it, be provided with the several screw hole on the terminal surface at both ends about the barrel respectively, be provided with the counter bore on the terminal surface at both ends about the barrel, seal ring sets up in the counter bore, be provided with the boss on the terminal surface of blind flange one end, be provided with several screw thread through-hole on the lateral wall of blind flange, the screw thread through-hole is located the outside of boss.
In one embodiment, the inner diameters of the two end parts of the cylinder body are equal and are smaller than the diameter of the counter bore and the inner diameter of the middle part of the cylinder body.
In one embodiment, the diameter of the counter bore is equal to the inner diameter of the middle part of the cylinder body and larger than the outer diameter of the boss, and the depth of the counter bore is equal to the thickness of the boss.
In one embodiment, the inner diameter of the sealing washer is equal to the inner diameter of the two end parts of the cylinder, and the outer diameter of the sealing washer is smaller than the diameter of the counter bore.
In one embodiment, the centers of the boss, the counter bore, the two ends of the cylinder body and the opening in the middle of the cylinder body are positioned on the same straight line.
In one embodiment, the threaded holes are arranged on the end faces of the left end and the right end of the cylinder in a circular array distribution manner, the threaded through holes are arranged on the side wall of the flange cover in a circular array distribution manner, and the distance from the center of the threaded through holes to the center line of the cylinder is equal to the distance from the center of the threaded through holes to the center line of the flange cover.
In one embodiment, the circle centers of the threaded holes on the cylinder body are respectively equal to the distance between the outer side wall and the inner side wall of the counter bore.
In one embodiment, the threaded through hole on the flange cover and the threaded hole on the cylinder body are fixedly connected through a screw.
In one embodiment, the center line of the cylinder and the center line of the flange cover are positioned on the same straight line.
In one embodiment, the outer diameter of the cylinder is equal to the outer diameter of the flange cover.
Compared with the prior art, the utility model provides a high-pressure pipe fitting with improved generation seal structure, the sealed face of two terminal surfaces departments of barrel is processed to the barrel inside, forms the concave surface structure, and the sealed face of external connection spare or pressure testing flange cover is also adjusted along with it, processes into corresponding convex surface structure, and seal ring places in the inside of concave surface, and at first, convenient two centering when the equipment of barrel and flange cover, reduced the whole equipment degree of difficulty and practiced thrift the equipment time; secondly, the sealing washer is arranged in the counter bores at the two ends of the cylinder body, and the periphery of the sealing washer is blocked and fixed by the inner walls of the counter bores, so that the phenomenon that the sealing washer is squeezed out of a sealing surface to cause leakage when being pressed is effectively prevented; and finally, the sealing structure in the concave-convex surface form is formed between the cylinder body and the flange cover, and the sealing and pressure-bearing capacity of the sealing structure is higher than that of the traditional plane sealing structure. In view of above several points, the utility model provides a pair of seal structure with improved generation seal structure's high-pressure pipe fitting is better than the sealing reliability of original structure.
Drawings
FIG. 1 is a schematic sectional view of the front view of the present invention;
fig. 2 is a side view schematic diagram of the barrel in the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
As shown in fig. 1 and fig. 2, for convenience of description, the references of "up", "down", "left", "right", "front" and "rear" directions in the present invention are based on the directions shown in fig. 1;
the utility model provides a high-pressure pipe fitting with improved generation seal structure, including barrel 1, flange lid 2 and seal ring 3, 1 cavity of barrel sets up, and both ends opening about it, be provided with 12M 12's screw hole on the terminal surface at both ends about barrel 1 respectively, be provided with counter bore 5 on the terminal surface at both ends about barrel 1, seal ring 3 sets up in counter bore 5, be provided with boss 21 on the terminal surface of 2 one ends of flange lid, be provided with 12M 12 screw thread through-holes 22 on the lateral wall of flange lid 2, screw thread through-hole 22 is located the outside of boss 21.
In this embodiment, in order to improve that the medium flowing through the cylinder 1 and the inside of the flange covers 2 at the two ends of the cylinder is smoother, the inner diameters of the two end parts of the cylinder 1 are designed to be equal and smaller than the diameter of the counter bore 5 and the inner diameter of the middle part of the cylinder 1, so that the inner diameter of the middle part of the cylinder 1 is larger, a certain buffering effect can be achieved, and the medium flowing through the cylinder 1 and the flange covers 2 at the two ends of the cylinder 1 is smoother.
In this embodiment, the diameter of the counterbore 5 is equal to the inner diameter of the middle part of the cylinder 1 and is greater than the outer diameter of the boss 21, the depth of the counterbore 5 is equal to the thickness of the boss 21, preferably, the inner diameter of the sealing washer 3 is equal to the inner diameter of the two end parts of the cylinder 1, and the outer diameter of the sealing washer 3 is less than the diameter of the counterbore 5; furthermore, the centers of the bosses 21, the counter bores 5, the two ends of the cylinder body 1 and the holes formed in the middle part of the two ends are positioned on the same straight line;
according to the sizes and the positions of the counter bore 5, the boss 21 and the sealing washer 3 which are designed, the mutual matching is more accurate, the sealing performance is better, the coaxiality among the counter bore 5, the boss 21 and the sealing washer 3 is higher, the centering operation in the assembling process of the cylinder body 1 and the flange cover 2 is facilitated, the whole assembling difficulty is reduced, and the assembling time is saved; secondly, the sealing washer 3 is arranged in the counter bores 5 at the two ends of the cylinder body 1, the periphery of the sealing washer 3 is blocked and fixed by the inner wall of the cylinder body 1, and the phenomenon that the sealing washer 3 is squeezed out of a sealing surface to cause leakage when being pressed is effectively prevented; and finally, the sealing structure in the concave-convex surface form formed between the cylinder body 1 and the flange cover 2 has higher sealing and pressure-bearing capacity than the traditional plane sealing structure.
In this embodiment, 12 threaded holes 4 are arranged on the end faces of the left and right ends of the cylinder 1 according to the distribution mode of the circular array, 12 threaded through holes 22 are arranged on the side wall of the flange cover 2 according to the distribution mode of the circular array, and the distance from the center of the threaded holes 4 to the center line of the cylinder 1 is equal to the distance from the center of the threaded through holes 22 to the center line of the flange cover 2, so that 12 threaded holes 4 are uniformly arranged on the end faces of the left and right ends of the cylinder 1 at intervals and 12 threaded through holes 22 are uniformly arranged on the flange cover 2 at intervals, and thus, when the cylinder 1 is connected with the flange cover 2 through the upper threaded holes 4 on the left and right end faces of the cylinder 1, the stress at each position on the left and right end faces of the cylinder 1 is more uniform, and the corresponding sealing performance is better;
preferably, the circle centers of the threaded holes 4 on the barrel body 1 are equal to the distance between the outer side wall and the inner side wall of the counter bore 5, and the threaded holes 4 are uniformly distributed in the middle positions of the side walls at the left end and the right end of the barrel body 1, so that the stress on the two sides of the side walls at the two ends of the barrel body 1 is more uniform, and the phenomenon that the pipe wall of the barrel body 1 is broken due to the fact that the stress on the two sides of the threaded holes 4 is uneven is avoided.
Preferably, be located the screw through-hole 22 on the blind flange 2 and be located the screw hole 4 on barrel 1 and pass through the screw rod and be connected fixedly, such connected mode simple structure, easy dismounting, while the dependable performance, the screw rod is the common accessory of machinery field, consequently, purchase convenience and low cost, great improvement the utility model provides a pair of high-pressure pipe fitting's with improved generation seal structure commonality.
In this embodiment, the central line of barrel 1 and the central line of blind flange 2 are located same straight line, and further, the external diameter of barrel 1 equals the external diameter of blind flange 2, and the axiality is good between barrel 1 and the blind flange 2, makes things convenient for equipment and standardized production between the two, and simultaneously, the external diameter of barrel 1 and blind flange 2 equals, and the two assembles the back, and the outward appearance is neat and artistic, and the wholeness is better.
The utility model provides a pair of high-pressure pipe fitting with improved generation seal structure, with the sealed face of the terminal surface department at both ends about barrel 1 promptly for counter bore 5 processing to the inside of barrel 1, become concave surface structure, the degree of depth of counter bore 5 is 27mm, the sealed face of external connection spare or flange cover 2 also adjusts thereupon, the convex surface structure that is processed into corresponding is boss 21 promptly, seal ring 3 places in counter bore 5, designs like this: the utility model provides a pair of high-pressure pipe fitting with improved generation seal structure has following advantage: 1) when the cylinder body 1 and the flange cover 2 are assembled, the cylinder body and the flange cover are easy to align, the assembling difficulty of the cylinder body and the flange cover is reduced, and the assembling time is saved; 2) the sealing washer 3 is arranged in the counter bores 5 at the two ends of the cylinder body 1, the periphery of the sealing washer 3 is blocked and fixed by the inner walls of the counter bores 5, the sealing washer 3 cannot be extruded out of a sealing surface between the boss 21 and the counter bores 5 when the sealing washer 3 is pressed, and the sealing performance between the cylinder body 1 and the flange cover 2 is greatly improved; 3) referring to the standard of the common flange in this field, the sealing bearing capacity of the sealing structure between the cylinder 1 and the flange cover 2 in the form of the concave-convex surface is also higher than that of the sealing structure between the traditional cylinder 1 and the flange cover 2, therefore, the utility model provides a high-pressure pipe fitting with an improved sealing structure, the sealing reliability of the sealing structure contained in the high-pressure pipe fitting is better, and the high-pressure pipe fitting is manufactured according to the processing. Through the improvement of this seal structure, under 38MPa pressure, accomplished hydrostatic test smoothly to pressurize 30 minutes, the utility model provides a pair of all parts of high-pressure pipe fitting with improved generation seal structure do not have any abnormal reaction such as deformation, abnormal sound, accomplished hydrostatic test experiment smoothly.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a high-pressure pipe fitting with improved generation seal structure, a serial communication port, includes the barrel, blind flange and seal ring, barrel cavity sets up, and controls both ends opening about it, be provided with the several screw hole on the terminal surface at both ends about the barrel respectively, be provided with the counter bore on the terminal surface at both ends about the barrel, seal ring sets up in the counter bore, be provided with the boss on the terminal surface of blind flange one end, be provided with several screw thread through-hole on the lateral wall of blind flange, the screw thread through-hole is located the outside of boss.
2. A high pressure tube with an improved seal according to claim 1 wherein the inner diameters of the two end portions of the barrel are equal and smaller than the diameter of the counterbore and the inner diameter of the middle portion of the barrel.
3. A high pressure tube with an improved seal according to claim 2, wherein the diameter of the counterbore is equal to the inner diameter of the middle part of the cylinder and greater than the outer diameter of the boss, and the depth of the counterbore is equal to the thickness of the boss.
4. A high-pressure pipe fitting with an improved sealing structure according to claim 3, wherein the inner diameter of the sealing washer is equal to the inner diameter of the two end parts of the cylinder body, and the outer diameter of the sealing washer is smaller than the diameter of the counter bore.
5. The high-pressure pipe fitting with the improved sealing structure as claimed in claim 4, wherein the centers of the holes at the boss, the counter bore, the two ends of the barrel and the middle part of the barrel are located on the same straight line.
6. The high-pressure pipe fitting with the improved sealing structure as claimed in claim 1, wherein a plurality of said threaded holes are disposed on the end surfaces of the left and right ends of said barrel in a circular array, a plurality of said threaded through holes are disposed on the side wall of said flange cover in a circular array, and the distance from the center of said threaded through holes to the center line of said barrel is equal to the distance from the center of said threaded through holes to the center line of said flange cover.
7. The high-pressure pipe fitting with the improved sealing structure as claimed in claim 6, wherein the center of the threaded hole on the cylinder is equal to the distance between the outer side wall and the inner side wall of the counterbore respectively.
8. The high-pressure pipe fitting with the improved sealing structure as claimed in claim 7, wherein the threaded through hole on the flange cover and the threaded hole on the cylinder body are fixedly connected through a screw.
9. A high pressure pipe fitting with an improved sealing structure according to claim 8, wherein the centerline of said barrel is aligned with the centerline of said flange cover.
10. A high pressure pipe fitting with an improved sealing structure as claimed in claim 9, wherein the outer diameter of said barrel is equal to the outer diameter of said flange cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120298242.9U CN214534971U (en) | 2021-02-02 | 2021-02-02 | High-pressure pipe fitting with improved generation seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120298242.9U CN214534971U (en) | 2021-02-02 | 2021-02-02 | High-pressure pipe fitting with improved generation seal structure |
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| Publication Number | Publication Date |
|---|---|
| CN214534971U true CN214534971U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120298242.9U Active CN214534971U (en) | 2021-02-02 | 2021-02-02 | High-pressure pipe fitting with improved generation seal structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414377A (en) * | 2022-02-18 | 2022-04-29 | 西湖大学 | Compact connection structure for in-situ experiment instrument |
| CN114526984A (en) * | 2022-02-18 | 2022-05-24 | 西湖大学 | Multi-field coupling in-situ experimental instrument |
-
2021
- 2021-02-02 CN CN202120298242.9U patent/CN214534971U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414377A (en) * | 2022-02-18 | 2022-04-29 | 西湖大学 | Compact connection structure for in-situ experiment instrument |
| CN114526984A (en) * | 2022-02-18 | 2022-05-24 | 西湖大学 | Multi-field coupling in-situ experimental instrument |
| CN114526984B (en) * | 2022-02-18 | 2024-04-05 | 西湖大学 | Multi-field coupling in-situ experiment instrument |
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