CN202708450U - Coal chemical special pressure balancing type expansion joint - Google Patents
Coal chemical special pressure balancing type expansion joint Download PDFInfo
- Publication number
- CN202708450U CN202708450U CN 201220331863 CN201220331863U CN202708450U CN 202708450 U CN202708450 U CN 202708450U CN 201220331863 CN201220331863 CN 201220331863 CN 201220331863 U CN201220331863 U CN 201220331863U CN 202708450 U CN202708450 U CN 202708450U
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- ring
- bellows
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Abstract
The utility model discloses a coal chemical special pressure balancing type expansion joint. The expansion joint is characterized in that a left side working corrugated pipe (1) and a right side working corrugated pipe (2) are arranged outside a left side inner shell ring (5) and a right side inner shell ring (4) respectively; a balancing corrugated pipe (3) is also arranged outside the left side working corrugated pipe (1); and a rigid pressure bearing sealing shell (20) is arranged outside the balancing corrugated pipe (3). Axial displacement can be greatly absorbed, and pressure thrust generated by the corrugated pipe can be restrained. An internal structure is novel in design, so that the axial and radial dimensions of the expansion joint are more compact, the corrugated pipe can be prevented from being eroded by a medium, and reduction in the medium circulation area of the product is avoided.
Description
Technical field
The utility model relates to a kind of larger axis that can absorb to the coal chemical engineering equipment pressure balanced expansion joint of displacement.
Background technique
The present Chinese large-sized coal chemical engineering equipment process engineerinies that adopt external advanced person more, as: the structure in the device, equipment, piping layout compactness, floor space is little, and has more used corrugated expanding metal joint.The technique of coal chemical engineering equipment and design condition are comparatively harsh, and medium is inflammable, explosive; As follows with the technical parameter of expansion joint for coal chemical engineering equipment:
Working pressure scope: 0.3MPa～2.0MPa;
Serviceability temperature scope: 480 ℃ of high temperature, low temperature-170 ℃;
Axial design compensation rate: 250mm;
Design fatigue life: greater than 3000 times;
And require this expansion joint can retrain the pressure thrust that bellows produces.
Because velocity of medium is higher, for prevent that material from gathering and medium to the washing away of bellows, the guide shell of this expansion joint inside is designed with specific (special) requirements.Because the structure in the device, equipment, piping layout compactness, floor space is little, requires expansion joint axial dimension and the radial dimension of product being accomplished to lack most under equal working condition.
Prior art not yet has the expansion joint that satisfies simultaneously above requirement.
Summary of the invention
The purpose of this utility model is exactly for above-mentioned the deficiencies in the prior art, provide a kind of and can absorb larger axial displacement, can retrain the pressure thrust that bellows produces, make all more compact Coal Chemical Industry particular pressure balanced expansion joints of the axial dimension of expansion joint and radial dimension.
The technical solution adopted in the utility model is as follows:
A kind of Coal Chemical Industry particular pressure balanced expansion joint, it is characterized in that it comprises the inner shell ring of the inner shell ring in left side and right side, the inner shell ring in left side and the right side inner shell ring outside is respectively equipped with left side work bellows and right side work bellows, wherein left side work bellows right output port links to each other with the work pressure-bearing ring flat-plate that is fixed on the inner shell ring outer wall in left side, and left side work bellows left port links to each other with the left end shell ring in the inner shell ring outside, left side; Described right side work bellows right output port links to each other with the right-hand member shell ring, its left port links to each other with the location shell ring, described location shell ring is connected with the right work pressure-bearing ring flat-plate that is fixed on the inner shell ring outer wall in right side, described left end shell ring outer wall is provided with left work pressure-bearing ring flat-plate, and left work pressure-bearing ring flat-plate is connected by supporting shell ring with right work pressure-bearing ring flat-plate; The outer wall of described support shell ring is provided with and supports the pressure-bearing ring flat-plate, supports on the pressure-bearing ring flat-plate and is connected with balance bellows one end, and the balance bellows the other end is connected to shell ring, and described shell ring is fixed on the left end pressure-bearing ring flat-plate that is in the inner shell ring outer wall in left side; Described right-hand member shell ring outer wall is provided with right-hand member pressure-bearing ring flat-plate, is connected with the rigidity pressure bearing and seal cylinder that is positioned at the balance bellows outside between described left end pressure-bearing ring flat-plate and the right-hand member pressure-bearing ring flat-plate.
The described left side inner shell ring shell ring of being connected with the right side adopts the form of flanging conical shell to connect.
Be provided with the metal flexible seal ring in the opening end gap of the inner shell ring in described left side and the inner shell ring flanging in right side.
Have the hole on described support shell ring and the left end pressure-bearing ring flat-plate, the hole of wherein supporting on the shell ring is positioned at the shell ring end in the inner part, and the hole of left end pressure-bearing ring flat-plate is being supported between pressure-bearing ring flat-plate and the right work pressure-bearing ring flat-plate.
The beneficial effects of the utility model have:
This expansion joint can absorb larger axial displacement, can retrain the pressure thrust that bellows produces, futuramic internal structure, make axial dimension and the radial dimension of expansion joint all more compact, the volume that takes up room is little, during work without unusual distortion, media flow is steady, the ability that absorbs axial displacement is strong, the pressure thrust that is produced by bellows can not act on equipment or support of pipelines, satisfy the requirement of coal chemical engineering equipment full and down long period safe operation, and its inner inner lining structure can be avoided also medium to wash away bellows and guarantees that this product can not reduce the circulation area of medium.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is further described below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of Coal Chemical Industry particular pressure of the utility model balanced expansion joint, it is characterized in that it comprises the inner shell ring 4 of the inner shell ring 5 in left side and right side, the inner shell ring 5 in left side and right side inner shell ring 4 outsides are respectively equipped with left side work bellows 1 and right side work bellows 2, therefore can guarantee that this product can not reduce the circulation area of medium on structure.Wherein left side work bellows 1 right output port links to each other with the work pressure-bearing ring flat-plate 6 that is fixed on inner shell ring 5 outer walls in left side, and left side work bellows 1 left port links to each other with the left end shell ring 7 in inner shell ring 5 outsides, left side.Described right side work bellows 2 right output port link to each other with right-hand member shell ring 9, its left port links to each other with location shell ring 8, described location shell ring 8 is connected with the right work pressure-bearing ring flat-plate 11 that is fixed on inner shell ring 4 outer walls in right side, described left end shell ring 7 outer walls are provided with left work pressure-bearing ring flat-plate 12, left work pressure-bearing ring flat-plate 12 is connected by supporting shell ring 10 with right work pressure-bearing ring flat-plate 11, the outer wall of described support shell ring 10 is provided with and supports pressure-bearing ring flat-plate 16, support and to connect balance bellows 3 right-hand members on the pressure-bearing ring flat-plate 16, the pressure thrust left that produces with balance bellows 3 to the right that common combination balance left side work bellows 1 and right side work bellows 2 produce.
Balance bellows 3 left ends are connected to shell ring 15, and described shell ring 15 is fixed on the left end pressure-bearing ring flat-plate 14 that is in inner shell ring 5 outer walls in left side; Described right-hand member shell ring 9 outer walls are provided with right-hand member pressure-bearing ring flat-plate 13, be connected with the rigidity pressure bearing and seal cylinder 20 that is positioned at balance bellows 3 outsides between described left end pressure-bearing ring flat-plate 14 and the right-hand member pressure-bearing ring flat-plate 13, the pressure thrust to the right that produces with balance bellows 3 left that common combination balance right side work bellows 2 and left side work bellows 1 produce can absorb larger axis to the restricted type expansion joint of displacement thereby formed.
The inner shell ring 5 in described left side be connected shell ring 4 and is adopted the form of flanging conical shells to connect with the right side, and is provided with metal flexible seal ring 17 in the opening end gap of the inner shell ring 5 in left side and inside, right side shell ring 4 flangings.
Have the hole on described support shell ring 10 and the left end pressure-bearing ring flat-plate 14, the hole of wherein supporting on the shell ring 10 is positioned at shell ring 15 ends in the inner part, the hole of left end pressure-bearing ring flat-plate 14 is being supported between pressure-bearing ring flat-plate 16 and the right work pressure-bearing ring flat-plate 11, make bellows when work, bear external pressure, be used for absorbing larger axial displacement, avoid the problem of the bellows generation column unstability that causes because of interior pressure.When work, when extraneous axial displacement acts on the end shell ring, by compression, the stretching of work bellows and balance bellows, produce axial relative movement between each shell ring and reach the purpose that absorbs axial displacement.
Bit shift compensation principle of the present utility model is: two work bellowss absorb equivalent stretching (or compression) displacement, and a balance bellows absorbs with two work bellows equivalent but opposite compression (or stretching) displacement.By the adjustment to expansion joint self internal structure, make two work bellowss and a balance bellows all bear down in working order external pressure, its principle is: in the time of in working order, the internal pressure of work bellows and balance bellows is atmospheric pressure, external pressure is the pressure medium (usually above atmospheric pressure) in the pipeline, its relative pressure is negative value, i.e. external pressure.Larger in the axial design compensation rate, in the design fatigue life higher situation, the mode of wave number that can be by increase work bellows and balance bellows satisfies design condition, thereby avoids making because increasing interior pressure that wave number causes the problem of bellows generation column unstability.
Pressure balance principle of the present utility model is: the useful area of balance bellows is the twice of the useful area of work bellows, by shell ring, the combined structure of pressure-bearing ring flat-plate that is connected with bellows, absorption reaches Equilibrium by the pressure thrust that each bellows produces.What the present invention adopted is the work bellows new structure in parallel with the balance bellows, the axial dimension of product is accomplished to lack most under equal working condition.The present invention adopts the new structure of shell ring and the combination of pressure-bearing ring flat-plate to replace original pressure-balancing type to come the structural type of absorption pressure thrust by outside pull bar or inner tongue pipe, so that under equal working condition the radial dimension of product is accomplished minimum.
Other undeclared part that the utility model relates to is same as the prior art.
Claims (4)
1. Coal Chemical Industry particular pressure balanced expansion joint, it is characterized in that it comprises the inner shell ring (4) of left side inner shell ring (5) and right side, the inner shell ring in left side inner shell ring (5) and right side (4) outside is respectively equipped with left side work bellows (1) and right side work bellows (2), wherein left side work bellows (1) right output port links to each other with the work pressure-bearing ring flat-plate (6) that is fixed on left side inner shell ring (5) outer wall, and left side work bellows (1) left port links to each other with the left end shell ring (7) in the inner shell ring in left side (5) outside; Described right side work bellows (2) right output port links to each other with right-hand member shell ring (9), its left port links to each other with location shell ring (8), described location shell ring (8) is connected with the right work pressure-bearing ring flat-plate (11) that is fixed on inner shell ring (4) outer wall in right side, described left end shell ring (7) outer wall is provided with left work pressure-bearing ring flat-plate (12), and left work pressure-bearing ring flat-plate (12) is connected by supporting shell ring (10) with right work pressure-bearing ring flat-plate (11); The outer wall of described support shell ring (10) is provided with and supports pressure-bearing ring flat-plate (16), support on the pressure-bearing ring flat-plate (16) and be connected with balance bellows (3) one ends, balance bellows (3) the other end is connected to shell ring (15), and described shell ring (15) is fixed on the left end pressure-bearing ring flat-plate (14) that is in left side inner shell ring (5) outer wall; Described right-hand member shell ring (9) outer wall is provided with right-hand member pressure-bearing ring flat-plate (13), is connected with the rigidity pressure bearing and seal cylinder (20) that is positioned at balance bellows (3) outside between described left end pressure-bearing ring flat-plate (14) and the right-hand member pressure-bearing ring flat-plate (13).
2. Coal Chemical Industry particular pressure balanced expansion joint according to claim 1 is characterized in that the inner shell ring in described left side (5) be connected the form connection of shell ring (4) employing flanging conical shell with the right side.
3. Coal Chemical Industry particular pressure balanced expansion joint according to claim 2 is characterized in that being provided with metal flexible seal ring (17) in the opening end gap of the inner shell ring (5) in described left side and inside, right side shell ring (4) flanging.
4. Coal Chemical Industry particular pressure balanced expansion joint according to claim 1, it is characterized in that having the hole on described support shell ring (10) and the left end pressure-bearing ring flat-plate (14), the hole of wherein supporting on the shell ring (10) is positioned at shell ring (15) end in the inner part, and the hole of left end pressure-bearing ring flat-plate (14) is positioned to be supported between pressure-bearing ring flat-plate (16) and the right work pressure-bearing ring flat-plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331863 CN202708450U (en) | 2012-07-10 | 2012-07-10 | Coal chemical special pressure balancing type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331863 CN202708450U (en) | 2012-07-10 | 2012-07-10 | Coal chemical special pressure balancing type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708450U true CN202708450U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220331863 Expired - Lifetime CN202708450U (en) | 2012-07-10 | 2012-07-10 | Coal chemical special pressure balancing type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708450U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979983A (en) * | 2012-12-07 | 2013-03-20 | 南通曙光波纹管制造有限公司 | Full-external-pressure straight pipe pressure balance compensator |
| CN103307402A (en) * | 2013-06-27 | 2013-09-18 | 江苏博格东进管道设备有限公司 | Straight pipe outer pressure balance type ripple compensator |
| CN105465532A (en) * | 2016-02-16 | 2016-04-06 | 江苏威创能源设备有限公司 | Intelligent directly-buried compensator |
| CN107091387A (en) * | 2017-06-16 | 2017-08-25 | 张兴达 | A kind of pipeline |
| CN107152581A (en) * | 2017-06-16 | 2017-09-12 | 张兴达 | Pipeline |
| CN107218466A (en) * | 2017-06-16 | 2017-09-29 | 张兴达 | Tipping formula pipeline |
| CN107255197A (en) * | 2017-06-16 | 2017-10-17 | 张兴达 | A kind of tipping formula pipeline |
| CN107781563A (en) * | 2016-08-31 | 2018-03-09 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of external pressure straight pipe pressure-equalizing |
| CN107795786A (en) * | 2016-08-31 | 2018-03-13 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of on-line monitoring external pressure straight pipe pressure-equalizing |
-
2012
- 2012-07-10 CN CN 201220331863 patent/CN202708450U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979983A (en) * | 2012-12-07 | 2013-03-20 | 南通曙光波纹管制造有限公司 | Full-external-pressure straight pipe pressure balance compensator |
| CN103307402A (en) * | 2013-06-27 | 2013-09-18 | 江苏博格东进管道设备有限公司 | Straight pipe outer pressure balance type ripple compensator |
| CN105465532A (en) * | 2016-02-16 | 2016-04-06 | 江苏威创能源设备有限公司 | Intelligent directly-buried compensator |
| CN107781563A (en) * | 2016-08-31 | 2018-03-09 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of external pressure straight pipe pressure-equalizing |
| CN107795786A (en) * | 2016-08-31 | 2018-03-13 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of on-line monitoring external pressure straight pipe pressure-equalizing |
| CN107091387A (en) * | 2017-06-16 | 2017-08-25 | 张兴达 | A kind of pipeline |
| CN107152581A (en) * | 2017-06-16 | 2017-09-12 | 张兴达 | Pipeline |
| CN107218466A (en) * | 2017-06-16 | 2017-09-29 | 张兴达 | Tipping formula pipeline |
| CN107255197A (en) * | 2017-06-16 | 2017-10-17 | 张兴达 | A kind of tipping formula pipeline |
| CN107091387B (en) * | 2017-06-16 | 2019-03-08 | 惠州大亚湾石化动力热力有限公司 | A kind of pipeline |
| CN107152581B (en) * | 2017-06-16 | 2019-06-07 | 唐成辉 | Pipeline |
| CN107255197B (en) * | 2017-06-16 | 2019-08-02 | 四会市集益氟塑有限公司 | A kind of tipping formula pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |