阅读说明：本技术 一种具有多级储能的密封结构 (Sealing structure with multistage energy storage function ) 是由 阳光军 高伟军 唐学文 周林辉 李友廷 于 2020-12-07 设计创作，主要内容包括：本发明涉及密封结构,提供一种具有多级储能的密封结构,包括密封座(1)以及与所述密封座(1)连接的被连接件(2),所述密封座(1)和/或所述被连接件(2)上具有密封件安装部,所述密封件安装部内设有若干弹性储能结构(3)和若干密封件(4),所述密封件安装部的外端设有压盖(5),所述密封件(4)设置在间隔的所述弹性储能结构(3)之间,以能够通过释放所述弹性储能结构(3)的内部弹性势能挤压所述密封件(4)。本发明所述的具有多级储能的密封结构的结构简单,密封效果好。(The invention relates to a sealing structure, and provides a sealing structure with multi-stage energy storage, which comprises a sealing seat (1) and a connected piece (2) connected with the sealing seat (1), wherein a sealing piece mounting part is arranged on the sealing seat (1) and/or the connected piece (2), a plurality of elastic energy storage structures (3) and a plurality of sealing pieces (4) are arranged in the sealing piece mounting part, a gland (5) is arranged at the outer end of the sealing piece mounting part, and the sealing pieces (4) are arranged among the elastic energy storage structures (3) at intervals so as to extrude the sealing pieces (4) by releasing the internal elastic potential energy of the elastic energy storage structures (3). The sealing structure with the multi-stage energy storage function has the advantages of simple structure and good sealing effect.)

1. The utility model provides a seal structure with multistage energy storage, including seal receptacle (1) and with what seal receptacle (1) was connected by connecting piece (2), seal receptacle (1) and/or by having the sealing member installation department on connecting piece (2), its characterized in that, be equipped with a plurality of elasticity energy storage structure (3) and a plurality of sealing member (4) in the sealing member installation department, the outer end of sealing member installation department is equipped with gland (5), sealing member (4) set up at the interval between elasticity energy storage structure (3), with can be through the release the inside elasticity potential energy extrusion of elasticity energy storage structure (3) sealing member (4).

2. The seal structure having multi-stage energy storage according to claim 1, wherein one end of the seal mounting portion is formed as an open end and the other end is formed as a closed end, wherein,

the sealing element mounting part is a counter bore (101) arranged on the sealing seat (1); or

The sealing element mounting part is a step structure (201) arranged on the connected piece (2); or

The sealing element mounting part comprises a counter bore (101) arranged on the sealing seat (1) and a step structure (201) arranged on the connected piece (2), and the end face of the closed end of the counter bore (101) is level with the step end face of the step structure (201).

3. The sealing structure with multi-stage energy storage according to claim 1, characterized in that the elastic energy storage structure (3) comprises a first energy storage part (301), a second energy storage part (302), a third energy storage part (303) and a fourth energy storage part (304), wherein,

first energy storage portion (301) are located the blind end of sealing member installation department, first energy storage portion (301) with between second energy storage portion (302) with all be equipped with sealing member (4) between third energy storage portion (303), third energy storage portion (303) are kept away from the one end of second energy storage portion (302) is supported and is leaned on a lateral surface of gland (5).

4. The sealing structure with multi-stage energy storage according to claim 3, wherein a fastener (6) is arranged on the gland (5), the fastener (6) can penetrate through the gland (5) and is connected with the sealing seat (1), and the fourth energy storage part (304) is arranged between the head of the fastener (6) and the gland (5).

5. The seal structure with multi-stage energy storage according to claim 3, characterized in that the first energy storage portion (301) and the second energy storage portion (302) are coil springs, and/or disc springs, and/or combined disc springs, and/or circular wave springs, and/or opposite-vertex wave springs, and/or multi-layer flat-top wave springs.

6. The sealing structure with multi-stage energy storage according to claim 5, characterized in that the number of the second energy storage portions (302) is at least one group.

7. The sealing structure with multi-stage energy storage according to claim 3, wherein the third energy storage portion (303) is a coil spring, and/or a combined disc spring, and/or a split-top wave spring, and/or a multi-layer flat-top wave spring, and/or an elastic bellows.

8. The seal structure with multi-stage energy storage according to claim 3, characterized in that the fourth energy storage portion (304) is a disc spring, and/or a multi-layer flat-topped wave spring.

9. The sealing structure with multi-stage energy storage according to any one of claims 3 to 8, characterized in that the number of the fourth energy storage portions (304) is at least two groups.

10. The sealing structure with multi-stage energy storage according to any one of claims 3 to 8, characterized in that a gap is formed between the gland (5) and the seal (4), and the initial length of the fourth energy storage portion (304) is greater than the length of the gap.

Technical Field

The invention relates to a sealing structure, in particular to a sealing structure with multi-stage energy storage.

Background

At present, the sealing element basically depends on the pressure exerted by a gland and a fastening element connected to the gland, and the pressure of the fastening element can be transmitted to the sealing element by the gland, the pressing ring and other parts, so that the communication between the interior of the pipeline and the external medium of the pipeline from a packing sealing position is prevented, and the sealing effect of the sealing element can be optimized by controlling the tightness degree of the fastening element.

However, when the seal is located in a closed container or a closed device, especially under high temperature and high pressure, the material structure of the seal is changed due to high temperature, the resilience of the seal is reduced, the fastener is easily elongated after thermal expansion due to high temperature, the pretightening force of the fastener is reduced, and meanwhile, the fastener is loosened due to flowing liquid or vibration, so that the seal fails. However, because the seal is located within a sealed container or device, the seal is not easily detected and repaired after it fails.

Therefore, there is a need to design a sealing structure with multi-stage energy storage to solve or overcome the above technical problems.

Disclosure of Invention

In view of this, the present invention provides a sealing structure with multi-stage energy storage, which has a simple structure and a good sealing effect.

In order to achieve the purpose, the invention provides a sealing structure with multi-stage energy storage, which comprises a sealing seat and a connected piece connected with the sealing seat, wherein a sealing piece mounting part is arranged on the sealing seat and/or the connected piece, a plurality of elastic energy storage structures and a plurality of sealing pieces are arranged in the sealing piece mounting part, a gland is arranged at the outer end of the sealing piece mounting part, and the sealing pieces are arranged among the elastic energy storage structures at intervals so as to extrude the sealing piece by releasing the internal elastic potential energy of the elastic energy storage structures.

As a preferred embodiment of the present invention, one end of the sealing member mounting portion is formed as an open end, and the other end is formed as a closed end, wherein the sealing member mounting portion is a counter bore provided on the sealing seat; or the sealing element mounting part is a step structure arranged on the connected piece; or the sealing element mounting part comprises a counter bore arranged on the sealing seat and a step structure arranged on the connected piece, and the end face of the closed end of the counter bore is flush with the end face of the step structure.

As another preferred embodiment of the present invention, the elastic energy storage structure includes a first energy storage portion, a second energy storage portion, a third energy storage portion and a fourth energy storage portion, wherein the first energy storage portion is disposed at a closed end of the sealing member mounting portion, sealing members are disposed between the first energy storage portion and the second energy storage portion and between the second energy storage portion and the third energy storage portion, and one end of the third energy storage portion, which is far away from the second energy storage portion, abuts against one side end face of the gland.

More preferably, a fastener is arranged on the gland, the fastener can penetrate through the gland and is connected with the sealing seat, and the fourth energy storage part is arranged between the head of the fastener and the gland.

Further preferably, the first energy storage portion and the second energy storage portion are coil springs, and/or disc springs, and/or combined disc springs, and/or circular wave springs, and/or opposite-top wave springs, and/or multi-layer flat-top wave springs.

As still another preferred embodiment of the present invention, the number of the second energy storage portions is at least one group.

As a specific structural form of the present invention, the third energy storage portion is a coil spring, and/or a combined disc spring, and/or a split-top wave spring, and/or a multi-layer flat-top wave spring, and/or an elastic bellows.

More specifically, the fourth energy storage portion is a disc spring, and/or a multi-layer flat-top wave spring.

As another specific structural form of the present invention, the number of the fourth energy storage portions is at least two groups.

In yet another specific structural form of the present invention, a gap is formed between the gland and the seal, and the fourth energy accumulating portion has an initial length greater than a length of the gap.

Compared with the prior art, the sealing structure with the multi-stage energy storage function has the following advantages:

(1) according to the sealing structure with the multi-stage energy storage function, the sealing elements and the elastic energy storage structures are arranged at the connecting part of the sealing seat and the connected piece, and the sealing elements are arranged among the elastic energy storage structures at intervals, so that when the gland is loosened or the sealing elements deform, the sealing elements can be squeezed when the internal elastic potential energy of the elastic energy storage structures 3 is released, the sealing requirements are met, and the sealing effect is good.

(2) The gland of the sealing structure with the multistage energy storage is also provided with the fourth energy storage part which is arranged between the head part of the fastening piece and the gland, and the fourth energy storage part can be used as an energy storage part and a gasket of the fastening piece, so that more energy storage can be provided for the sealing structure with the multistage energy storage.

According to the technical scheme, the sealing structure with the multi-stage energy storage comprises a sealing seat and a connected piece connected with the sealing seat, wherein a sealing piece mounting part is arranged on the sealing seat and/or the connected piece, a plurality of elastic energy storage structures and a plurality of sealing pieces are arranged in the sealing piece mounting part, a gland is arranged at the outer end of the sealing piece mounting part, and the sealing pieces are arranged among the elastic energy storage structures at intervals so as to extrude the sealing pieces by releasing the internal elastic potential energy of the elastic energy storage structures. According to the sealing structure with the multi-stage energy storage, the sealing elements are arranged between the elastic energy storage structures which are arranged at intervals, and when the gap between the gland and the sealing seat is increased or the sealing elements fail due to external factors, the elastic potential energy in the sealing elements can be released by using the elastic energy storage structures, so that the sealing effect of the sealing elements is enhanced, and the sealing elements do not fail.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of one embodiment of a sealing structure with multi-stage energy storage according to the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the sealing structure with multi-stage energy storage according to the present invention;

FIG. 3 is a schematic structural view of one embodiment of the seal housing of the present invention;

fig. 4 is a schematic structural view of one embodiment of the seal mounting portion of the coupled member of the present invention.

Description of reference numerals:

1 sealing seat 101 counter bore

2 connected piece 201 step structure

3 first energy storage part of elastic energy storage structure 301

302 second energy storage 303 third energy storage

304 fourth energy storage portion 4 seal

5 gland 6 fastener

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present invention provides a sealing structure with multi-stage energy storage, which includes a sealing seat 1 and a connected member 2 connected to the sealing seat 1, wherein the sealing seat 1 and/or the connected member 2 has a sealing member mounting portion, a plurality of elastic energy storage structures 3 and a plurality of sealing members 4 are disposed in the sealing member mounting portion, a gland 5 is disposed at an outer end of the sealing member mounting portion, and the sealing members 4 are disposed between the elastic energy storage structures 3 at intervals so as to be able to extrude the sealing members 4 by releasing internal elastic potential energy of the elastic energy storage structures 3.

As can be seen from fig. 1, the sealing structure with multi-stage energy storage of the present invention is disposed in the sealing member mounting portion, and the sealing member 4 is disposed between the elastic energy storage structures 3 at intervals, that is, the sealing member 4 and the elastic energy storage structure 3 are disposed at intervals, a group of sealing members 4 and a group of elastic energy storage structures 3 may be disposed at intervals, a plurality of groups of elastic energy storage structures 3 may be disposed between two groups of sealing members 4, or a plurality of groups of sealing members 4 may be disposed between two groups of elastic energy storage structures 3, and the specific structural form is determined according to the actual sealing requirement. In the embodiment of the invention shown in fig. 1, three sets of sealing elements 4 are arranged between two sets of elastic energy storage structures 3, and under the pressure of the elastic potential energy of the two sets of elastic energy storage structures 3, the outer circumferential surface of each sealing element 4 abuts against the inner circumferential surface of the sealing element mounting part, and the inner circumferential surface of each sealing element 4 abuts against the outer circumferential surface of the connected part 2, so that a good sealing effect is achieved. And, when gland 5 is not hard up, or sealing member 4 loses the resilience because of the high temperature or high-pressure external environment influence, each elasticity energy storage structure 3 can release its elastic potential energy, extrudees each sealing member 4 from the both ends of sealing member 4 to can make sealing member 4 keep better sealed effect always under the condition of not needing to tighten fastener 6, and need not realize through dismantling equipment.

In addition, in order to ensure that the sealing element 4 has a good sealing effect in the using process, the initial state of each elastic energy storage structure 3 needs to ensure that enough elastic potential energy is provided, and the elastic energy storage structures 3 can release enough elastic potential energy in the using process so as to ensure the sealing effect of the sealing element 4.

As shown in fig. 1 and 2, as a preferred embodiment of the present invention, one end of the sealing member mounting portion is formed as an open end, and the other end is formed as a closed end, wherein the sealing member mounting portion is a counterbore 101 provided on the sealing seat 1.

As an alternative to the above preferred embodiment, the seal mounting portion is a stepped structure 201 provided on the connected member 2.

As another alternative embodiment of the above preferred embodiment, the seal mounting portion includes a counterbore 101 provided on the seal holder 1 and a stepped structure 201 provided on the connected member 2, and a closed end face of the counterbore 101 is flush with the stepped end face of the stepped structure 201.

It can be seen that the seal mounting portion of the present invention, as shown in fig. 3 and 4, can have the following three structural forms: firstly, the sealing member mounting portion of the present invention is the counterbore 101 disposed on the sealing seat 1, at this time, the outer peripheral surface of the connected member 2 is a smooth peripheral surface, the connected member 2 is inserted into the counterbore 101, the outer peripheral surface of the connected member 2 and the inner peripheral surface of the counterbore 101 enclose a cavity structure with one end closed and the other end open, and the sealing member 4 and the elastic energy storage structure 3 can be disposed in the cavity structure. Secondly, the sealing element mounting part of the invention is a step structure 201 arranged on the connected piece 2, at this time, the sealing seat 1 is provided with a mounting through hole, the connected piece 2 is inserted into the through hole, the inner peripheral surface of the step structure 201 and the mounting through hole enclose a cavity structure with one end closed and the other end open, and the sealing element 4 and the elastic energy storage structure 3 can be arranged in the cavity structure. Thirdly, the sealing element mounting part of the invention is arranged on the sealing seat 1 and the connected piece 2 at the same time, the sealing seat 1 is provided with the counter bore 101, the connected piece 2 is provided with the step structure 201, the connected piece 2 is inserted into the counter bore 101, the end surface of the closed end of the counter bore 101 is level with the step end surface of the step structure 201, the inner circumferential surface of the counter bore 101 and the outer circumferential surface of the step structure 201 are enclosed to form a cavity structure with one closed end and one open end, and the sealing element 4 and the elastic energy storage structure 3 can be arranged in the cavity structure. The three structural forms can meet the requirement of sealing connection between the sealing seat 1 and the connected piece 2, and all belong to the protection scope of the invention.

As another preferred embodiment of the present invention, the elastic energy storage structure 3 includes a first energy storage portion 301, a second energy storage portion 302, a third energy storage portion 303, and a fourth energy storage portion 304, wherein the first energy storage portion 301 is disposed at a closed end of the sealing member mounting portion, sealing members 4 are disposed between the first energy storage portion 301 and the second energy storage portion 302, and between the second energy storage portion 302 and the third energy storage portion 303, and one end of the third energy storage portion 303, which is far away from the second energy storage portion 302, abuts against one side end face of the gland 5.

More preferably, a fastening member 6 is arranged on the gland 5, the fastening member 6 can penetrate through the gland 5 and is connected with the seal seat 1, and the fourth energy storage part 304 is arranged between the head of the fastening member 6 and the gland 5.

The elastic energy storage structure 3 comprises a first energy storage part 301, a second energy storage part 302, a third energy storage part 303 and a fourth energy storage part 304, wherein one end of the first energy storage part 301 abuts against the closed end of the sealing element mounting part, the other end of the first energy storage part 301 abuts against the sealing element 4, when the first energy storage part 301 releases elastic potential energy, the elastic potential energy can be basically transmitted to the sealing element 4, and the sealing performance of the sealing element 4 can be ensured by utilizing the extrusion of the elastic potential energy on the sealing element 4.

It should be noted that, the second energy storage portion 302 is disposed between two sets of sealing members 4, and the second energy storage portion 302 may be set as a first-stage energy storage portion as shown in fig. 1, or may be set as a second-stage energy storage portion or even a multi-stage energy storage portion on the basis that the sealing member mounting portion has a sufficient depth, so as to ensure that the second energy storage portion 302 has more elastic potential energy therein, thereby offsetting the failure condition of the sealing member 4 caused by the elongation of the fastening member 6 and the loss of the resilience of the sealing member 4. That is, at least one set of the second energy storage portions 302 is provided between the first energy storage portion 301 and the third energy storage portion 303 of the present invention.

As a specific configuration of the present invention, the first energy storage portion 301 and the second energy storage portion 302 are coil springs, and/or disc springs, and/or combined disc springs, and/or circular wave springs, and/or opposite-vertex wave springs, and/or multi-layer flat-top wave springs.

More specifically, the third energy storage portion 303 is a coil spring, and/or a combined disc spring, and/or a counter-top wave spring, and/or a multi-layer flat-top wave spring, and/or an elastic bellows.

Still further, the fourth energy storage portion 304 is a disc spring, and/or a multi-layer flat-top wave spring.

It should be noted that, when designing and selecting the type, it should be considered that under the condition of the same fastener pretightening force, the multi-stage energy storage parts are all in the optimal compression state, so that it is ensured that all stages of energy storage parts can rebound simultaneously, and the rebound amount is in direct proportion to the total length of each energy storage part.

The selection of the material of each stage of the energy storage unit is made appropriately according to the level of the use temperature, the characteristics of the contact medium, and the like.

As another specific structure form of the present invention, the number of the fourth energy storage portions 304 is at least two.

The fourth energy storage portion 304 can be used in place of the washer of the fastener 6, so that the washer of the fastener 6 can be completely replaced or partially replaced, and the present invention falls within the protection scope of the present invention according to the actual use requirement.

As still another specific configuration of the present invention, a gap is formed between the gland 5 and the seal 4, and the initial length of the fourth energy storage portion 304 is greater than the length of the gap.

As a specific embodiment of the invention, in a certain reactor, the operation pressure is 7.5MPa, the operation temperature is 370 ℃, the medium in the pipe is diesel oil, and the medium outside the pipe is a gas phase. If the sealing structure in the prior art is adopted, the bolt is found to be loose after 15 days of use, and the sealing element 4 fails and leaks. Likewise, with the multi-stage energy storage sealing structure of the present invention, no failure of the sealing member 4 occurs under the same pressure, temperature and medium conditions for 11 months of use. In this embodiment, the first energy storage part 301 and the second energy storage part 302 are each formed by a plurality of layers of flat-topped wave springs, the third energy storage part 303 is formed by a flexible corrugated pipe, and the fourth energy storage part is formed by two disc springs, i.e., each fastening bolt is provided with one disc spring, wherein the material of each energy storage part can resist 600 ℃.

According to the technical scheme, the sealing structure with the multi-stage energy storage comprises a sealing seat 1 and a connected piece 2 connected with the sealing seat 1, a sealing piece mounting part is arranged on the sealing seat 1 and/or the connected piece 2, a plurality of elastic energy storage structures 3 and a plurality of sealing pieces 4 are arranged in the sealing piece mounting part, a gland 5 is arranged at the outer end of the sealing piece mounting part, and the sealing pieces 4 are arranged among the elastic energy storage structures 3 at intervals so as to extrude the sealing pieces 4 by releasing the internal elastic potential energy of the elastic energy storage structures 3. The sealing structure with the multi-stage energy storage function can extrude the sealing element 4 without screwing the fastening element 6 under the sealing condition of high temperature and high pressure by releasing the elastic potential energy in the elastic energy storage structure 3, so that the sealing element 4 is prevented from losing efficacy, and the sealing effect of the sealing structure with the multi-stage energy storage function is further ensured.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.