CN202647042U - Direct-current type thrust-free self-sealing sleeve compensator - Google Patents
Direct-current type thrust-free self-sealing sleeve compensator Download PDFInfo
- Publication number
- CN202647042U CN202647042U CN 201220200144 CN201220200144U CN202647042U CN 202647042 U CN202647042 U CN 202647042U CN 201220200144 CN201220200144 CN 201220200144 CN 201220200144 U CN201220200144 U CN 201220200144U CN 202647042 U CN202647042 U CN 202647042U
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- CN
- China
- Prior art keywords
- core pipe
- right shell
- spacing flange
- current type
- telescopic core
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a direct-current type thrust-free self-sealing sleeve compensator, comprising a retractable core pipe, a diameter-changing pipe, a left shell, a right shell and limiting flanges, wherein the outer wall of the retractable core pipe is provided with an annular lug boss; one limiting flange of the left shell is fixedly connected with one limiting flange at the left side of the right shell through a bolt; sealing structures are arranged at the combining parts of the left and right shells and the retractable core pipe, and between the right shell and the annular lug boss, wherein a balance cavity is formed by the outer wall of the retractable core pipe, the annular lug boss and the right shell; the retractable core pipe is provided with a medium through hole communicated with the balance cavity; and the area of the cross section of the balance cavity is equal to the area of the cross section of an inner hole of the retractable core pipe. According to the direct-current type thrust-free self-sealing sleeve compensator, a pipeline blind plate force caused by medium pressure change can be rapidly offset through the balance cavity; and sealing fillers can be supplemented in time under the condition of being online and under pressure through arranging a filling device, and long-period safe operation of the sleeve compensator is guaranteed.
Description
Technical field
The utility model relates to a kind of pipe line compensating device, is specifically related to a kind of direct current type without thrust selfsealings sleeve expansion joint.
Background technique
Sleeve expansion joint is applicable to the media such as hot water, steam, grease as a kind of compensation device of hot fluid pipeline, by the sliding motion of the relative outer tube of core pipe or frame, reaches the compensation of thermal expansion.Existing sleeve expansion joint mostly is inner tube fit outer tube structure, lacks the pressure medium equilibrium structure, and when producing respective action power because of temperature variation, inner tube can well compensate response; And when having larger pressure medium in the inner tube, balanced compensated because lacking pressure medium, larger axis easily occurs to displacement in inner tube, can have influence on trouble free service and the working life of sleeve expansion joint.
The model utility content
The purpose of this utility model is the problem that exists for prior art, provides a kind of and pressure medium is changed the blind plate power that causes has well balanced effect and can realize that direct current type that the work seal filler replenishes is without thrust selfsealings sleeve expansion joint.
For this reason, the utility model adopts following technological scheme:
A kind of direct current type comprises telescopic core pipe, reducer pipe, left shell, right shell body and spacing flange without thrust selfsealings sleeve expansion joint; Described spacing flange comprises the first spacing flange of being located at left shell one side and the second spacing flange of being located at the right shell body both sides, the 3rd spacing flange, the outer wall of described telescopic core pipe is provided with annular boss, be bolted to connection between the described first spacing flange and the second spacing flange, a described left side, between right shell body and telescopic core pipe, junction between right shell body and annular boss is equipped with sealing configuration, the outer wall of described telescopic core pipe, consist of a counter balance pocket between annular boss and the right shell body, offer on the described telescopic core pipe for the medium through hole that is communicated with counter balance pocket, the cross sectional area of described counter balance pocket equals the cross sectional area of telescopic core pipe orifice, and described medium through hole is at least two and along the setting of telescopic core pipe circumference uniform distribution.
Described sealing configuration comprises stuffing box packing and gland, is bolted to connection between described gland and the adjacent spacing flange.
Described left shell is provided with the material injecting device that is connected with stuffing box packing with right shell body.
Described material injecting device comprises material hole, plug screw, retractable cone and spring, and described material hole endoporus is provided with the annular projection that matches with retractable cone, and described spring connects retractable cone and material hole bottom, described plug screw and material hole aperture screw-thread fit.
In the utility model, counter balance pocket has two annular compression faces, and one is the right side annular end face that is formed by right shell body, and another mainly is can be moved with the telescopic core pipe by left side annular end face and this end face that annular boss forms.Movably the area of annular compression face is just equal with the cross-section area of telescopic core pipe orifice for this.During compensator work, flowing medium in the telescopic core pipe enters counter balance pocket by medium through hole, pressure medium on the ring surface of left side and pipeline blind plate power equal and opposite in direction, opposite direction, the two can be cancelled out each other, and the telescopic core pipe of having avoided causing under the pressure medium effect axially moves.
The beneficial effects of the utility model are: it is fast that pressure medium changes lower compensation response, can offset fast pressure medium by counter balance pocket and change the pipeline blind plate power that causes, guaranteed that compensator is without safe operation under the thrust rating; Setting by material injecting device can realize in time replenishing of online situation lower seal filler with pressure, and what guaranteed sleeve expansion joint does not shut down operation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the local enlarged diagram of A part-structure among Fig. 1.
Embodiment
As shown in Figure 1, a kind of direct current type is without thrust selfsealings sleeve expansion joint, comprise telescopic core pipe 1, reducer pipe 20, left shell 19, right shell body 9, one side of left shell 19 is provided with the first spacing flange 16, the both sides of right shell body 9 are respectively equipped with the second spacing flange 12, the 3rd spacing flange 3, the outer wall of telescopic core pipe 1 is provided with annular boss 8, be bolted to connection between the first spacing flange 16 and the second spacing flange 12, left, right shell body 19,9 and 1 of telescopic core pipe, the junction that right shell body 9 and annular boss are 8 is equipped with sealing configuration, the outer wall of telescopic core pipe 1, consist of a counter balance pocket 7 between annular boss 8 and the right shell body 9, offer on the telescopic core pipe 1 for the medium through hole 6 that is communicated with counter balance pocket 7, the cross sectional area of counter balance pocket 7 equals the cross sectional area of telescopic core pipe 1 endoporus, and medium through hole 6 is at least two and along the uniform setting of the circumference on the telescopic core pipe 1.Sealing configuration comprises stuffing box packing 4,10,18 and gland 2,13,15, is bolted to connection respectively between gland 15 and the first spacing flange 16, gland 13 and the second spacing flange 12, gland 2 and the 3rd spacing flange 3.Be respectively equipped with the material injecting device 17,11,5 that is connected with stuffing box packing 18,10,4 on left shell 19 and the right shell body 9.As shown in Figure 2, take material injecting device 11 as example, this material injecting device comprises material hole 11.2, plug screw 11.1, retractable cone 11.3 and spring 11.4, material hole 11.2 endoporus are provided with the annular projection 11.5 that matches with retractable cone 11.3, spring 11.4 connects retractable cone 11.3 and material hole 11.2 bottoms, plug screw 11.1 and material hole 11.2 aperture screw-thread fit.
During sleeve expansion joint work, flowing medium in the telescopic core pipe 1 enters counter balance pocket 7 by medium through hole 6, because the cross sectional area of counter balance pocket 7 equals the cross sectional area of telescopic core pipe 1 endoporus, pressure medium on the annular boss 7 one side ring surfaces and pipeline blind plate power equal and opposite in direction, opposite direction, the two is cancelled out each other, moving axially of the telescopic core pipe 1 of having avoided pressure medium to change causing guaranteed the safe operation of compensator.
In addition, owing to the effect of spring 11.4 pressure, retractable cone 11.3 tightly leans on annular projection 11.5 always, has prevented overflowing of stuffing box packing 10 under normal circumstances.When stuffing box packing 10 generation losses need to replenish; spiral shell pine and unload plug screw 11.1 under outage state not; the material feeding rifle is connected material hole 11.2; stuffing box packing enters material hole 11.2 through the material feeding rifle under pressure; because external pressure effect; annular projection 11.5 is pushed and left to retractable cone 11.3 by stuffing box packing with pressure, thereby so that stuffing box packing 10 replenished.Replenish to pull up the material feeding rifle and to reinstall plug screw 11.1 after complete and get final product, retractable cone 11.3 is returned to original position under spring 11.4 acts on.
Claims (4)
1. a direct current type comprises telescopic core pipe (1), reducer pipe (20), left shell (19), right shell body (9) and spacing flange without thrust selfsealings sleeve expansion joint; Described spacing flange comprises the first spacing flange (16) of being located at left shell one side and the second spacing flange (12) of being located at the right shell body both sides, the 3rd spacing flange (3), the outer wall of described telescopic core pipe (1) is provided with annular boss (8), be fixedly connected with by bolt (14) between the described first spacing flange (16) and the second spacing flange (12), a described left side, right shell body (19,9) and between telescopic core pipe (1), junction between right shell body (9) and annular boss (8) is equipped with sealing configuration, it is characterized in that, the outer wall of described telescopic core pipe (1), consist of a counter balance pocket (7) between annular boss (8) and the right shell body (9), offer on the described telescopic core pipe (1) for the medium through hole (6) that is communicated with counter balance pocket (7), the cross sectional area of described counter balance pocket (7) equals the cross sectional area of telescopic core pipe (1) endoporus, and described medium through hole (6) is at least two and along telescopic core pipe (1) circumference uniform distribution setting.
2. a kind of direct current type according to claim 1 is without thrust selfsealings sleeve expansion joint, it is characterized in that, described sealing configuration comprises stuffing box packing (4,10,18) and gland (2,13,15), is bolted to connection between described gland (2,13,15) and the adjacent spacing flange.
3. a kind of direct current type according to claim 2 is characterized in that without thrust selfsealings sleeve expansion joint, and described left shell (19) is provided with the material injecting device (5,11,17) that is connected with stuffing box packing (4,10,18) with right shell body (9).
4. a kind of direct current type according to claim 3 is without thrust selfsealings sleeve expansion joint, it is characterized in that, described material injecting device comprises material hole (11.2), plug screw (11.1), retractable cone (11.3) and spring (11.4), described material hole (11.2) endoporus is provided with the annular projection (11.5) that matches with retractable cone (11.3), described spring (11.4) connects retractable cone (11.3) and material hole (11.2) bottom, described plug screw (11.1) and material hole (11.2) aperture screw-thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220200144 CN202647042U (en) | 2012-05-07 | 2012-05-07 | Direct-current type thrust-free self-sealing sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220200144 CN202647042U (en) | 2012-05-07 | 2012-05-07 | Direct-current type thrust-free self-sealing sleeve compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202647042U true CN202647042U (en) | 2013-01-02 |
Family
ID=47416150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220200144 Expired - Fee Related CN202647042U (en) | 2012-05-07 | 2012-05-07 | Direct-current type thrust-free self-sealing sleeve compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202647042U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465530A (en) * | 2016-01-18 | 2016-04-06 | 航天晨光股份有限公司 | Pressure balance type sleeve compensator |
| CN107664242A (en) * | 2016-07-29 | 2018-02-06 | 江苏金通机械有限公司 | Heat-insulated sealing Zero-thrust sleeve type compensator |
-
2012
- 2012-05-07 CN CN 201220200144 patent/CN202647042U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465530A (en) * | 2016-01-18 | 2016-04-06 | 航天晨光股份有限公司 | Pressure balance type sleeve compensator |
| CN107664242A (en) * | 2016-07-29 | 2018-02-06 | 江苏金通机械有限公司 | Heat-insulated sealing Zero-thrust sleeve type compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150507 |
|
| EXPY | Termination of patent right or utility model |