CN108468895A - A kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation - Google Patents
A kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation Download PDFInfo
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- CN108468895A CN108468895A CN201810325759.5A CN201810325759A CN108468895A CN 108468895 A CN108468895 A CN 108468895A CN 201810325759 A CN201810325759 A CN 201810325759A CN 108468895 A CN108468895 A CN 108468895A
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- universal
- expansion joint
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
A kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation, by sequentially connected flange A, work bellows and flange B compositions, multiple balance components are equipped in work bellows exterior circumferential between flange A and flange B, balance component is by the pressure cylinder that is fixed on flange A, piston and Universal linking lever component composition, at least two mutually independent pressure chambers are equipped in pressure cylinder, the piston of setting is slided there are one being set in each pressure chamber in pressure chamber, when the bellows that works compresses, the medium in the seal chamber in pressure cylinder at compression position increases with the sliding of piston, when the bellows that works stretches, the medium in the seal chamber in pressure cylinder at stretch position increases with the sliding of piston, expansion joint is set to be in equilibrium state.The present invention solves the problems, such as that excessive conventional straight pipe pressure-balancing type expansion joint outer diameter, heavier-weight, manufacturing cost are high；It is provided simultaneously with compensation axial displacement, the ability of lateral displacement and angular displacement, bit shift compensation is flexible.
Description
Technical field
The present invention relates to straight pipe pressure-balancing type expansion joints, and it is flat to particularly relate to a kind of straight tube pressure with three-dimensional compensation
Weighing apparatus type expansion joint.
Background technology
Existing straight pipe pressure-balancing type expansion joint conventional type is exceptionally pressed and two kinds of internal pressure.The straight tube pressure of external pressure pattern
Balanced expansion joint（Fig. 1）It is made of one group of work bellows and one group of balance bellows, is mainly used for absorbing axial displacement simultaneously
The pressure thrust of bellows can be balanced.The straight pipe pressure-balancing type expansion joint of internal pressure pattern（Fig. 2）By two work bellowss
With positioned at the structural members composition such as intermediate a balance bellows and pull rod, end plate, it is mainly used for absorbing axial direction and lateral displacement
And the pressure thrust of bellows can be balanced.
Conventional structure straight pipe pressure-balancing type expansion joint is to realize pressure balance, meets bit shift compensation needs except that need to be arranged
Outside operating wave, also need separately to set one group of balance wave for balancing pressure thrust, while increasing corresponding restraining structure part, manufacturing cost
It is relatively high.For interior die mould straight pipe pressure-balancing type expansion joint, the outer diameter of balance wave is significantly larger than operating wave, thus makes
Excessive at expansion joint entire outer diameter, weight of equipment is heavier.
In addition, conventional straight pipe pressure-balancing type expansion joint is because the limitation of structural shape is mainly used for compensating axial displacement, no
Has the function of angular displacement and lateral displacement compensation.
Invention content
In order to solve the above technical problems, the present invention provides a kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation,
Solve the problems, such as that excessive conventional straight pipe pressure-balancing type expansion joint outer diameter, heavier-weight, manufacturing cost are high；It is provided simultaneously with compensation
The ability of axial displacement, lateral displacement and angular displacement, bit shift compensation are flexible.
To realize the above-mentioned technical purpose, used technical solution is：A kind of straight pipe pressure-equalizing with three-dimensional compensation
Type expansion joint is made of, the work ripple between flange A and flange B sequentially connected flange A, work bellows and flange B
Pipe exterior circumferential be equipped with multiple balance components, the balance component by be fixed on flange A pressure cylinder, piston and
Universal linking lever component forms, and at least two mutually independent pressure chambers is equipped with by work bellows axial direction in pressure cylinder, every
It is set in one pressure chamber and matches there are one the cavity wall with pressure chamber and slide the piston of setting in pressure chamber, pressure chamber is by living
Plug is divided into seal chamber and discharge chamber, and the gas vent being connected with extraneous air is equipped on the pressure cylinder of discharge chamber side, described
Universal linking lever component be made of Universal linking lever and flexible pipe, the axis center of Universal linking lever is hollow structure, in the hollow structure
In be equipped with flexible pipe, one end of Universal linking lever is stretched into each pressure chamber and is connect with each piston, and all pistons is driven to move in the same direction,
Offer on Universal linking lever in seal chamber or on piston the conduction hole being connected with flexible pipe, the other end of Universal linking lever with
Flange B connections, the medium flow field through-hole for making flexible pipe be connected with expansion joint medium channel is offered in flange B, makes medium flow field
Through-hole, flexible pipe and seal chamber are sequentially connected logical, are equipped on the Universal linking lever between pressure cylinder and flange B at least two universal
Section, when the bellows that works compresses, the medium in the seal chamber in pressure cylinder at compression position increases with the sliding of piston, when
When the bellows that works stretches, the medium in the seal chamber in pressure cylinder at stretch position increases with the sliding of piston, makes expansion
Section is in equilibrium state.
The section of medium flow field through-hole of the present invention is L-type.
Universal joint of the present invention is that universal ball joint, Hooke's joint, weiss universal joint, three pin types are universal
Section or rzeppa joint.
Present invention has the advantages that：A kind of Novel balance structure is used, balance wave is eliminated, expansion joint outer diameter can reduce
30% or more, expansion joint weight is substantially alleviated, cost has been saved.Axial displacement, transverse direction are can compensate for using new-type balance component
Displacement and angular displacement have the characteristics that compensation is flexible, are provided simultaneously with feature simple in structure, safe and reliable.
Description of the drawings
Fig. 1 is conventional external pressure straight pipe pressure-balancing type expansion joint schematic diagram；
Fig. 2 is conventional internal pressure straight pipe pressure-balancing type expansion joint schematic diagram；
Fig. 3 is the structural schematic diagram of the present invention；
Fig. 4 is the structural schematic diagram of the balance component of the present invention；
Fig. 5 is the vertical equilibrium state schematic diagram of the present invention；
Fig. 6 is that the lateral displacement of the present invention compensates change schematic diagram；
Fig. 7 is that the angular displacement of the present invention compensates change schematic diagram；
In figure：1, flange A, 2, work bellows, 3, balance component, 3-1, pressure cylinder, 3-2, piston, 3-3, sealing ring A, 3-4,
Piston rod, 3-5, diaphragm plate, 3-6, sealing ring B, 3-7, Universal linking lever component, 3-7-1, Universal linking lever, 3-7-2, flexible pipe,
3-7-3, universal joint, 3-8, pressure chamber, 3-8-1, seal chamber, 3-8-2, discharge chamber, 3-8-3, conduction hole, 3-8-4, gas vent,
4, flange B, 4-1, medium flow field through-hole.
Specific implementation mode
The preferred embodiment for providing invention below in conjunction with the accompanying drawings, with the technical solution that the present invention will be described in detail.Here, it will give
Going out respective drawings, the present invention is described in detail.It should be strongly noted that preferred implementation example as described herein is only used
In the description and interpretation present invention, the present invention is not limited to or limited.
As shown in figure 3, it is a kind of with three-dimensional compensation straight pipe pressure-balancing type expansion joint, by sequentially connected flange A1,
Work bellows 2 and flange B4 compositions, is equipped in 2 exterior circumferential of work bellows between flange A1 and flange B4 multiple flat
Weigh component 3, point out in the patent it is multiple it is minimum be two, when flange A 1 is as medium entrance, flange B 4 is used as medium
Outlet, or when flange A 1 is as media outlet, flange B 4 is used as medium entrance, has no effect on the connection of balance component 3.Method
Blue A 1 and flange B 4 is to limit to be used for the intermediate medium import and circumferencial direction being connected to work bellows 2
The outer edge of stable equilibrium component 3, other components similar with flange arrangement belong to flange arrangement.Entire expansion joint makes
Used time is not limited to use vertically or level uses.
As shown in figure 4, multiple balance component optimal uniforms are arranged in the outside of work bellows 2, single balance component
It is made of pressure cylinder 3-1, the piston 3-2 and Universal linking lever component 3-7 that are fixed on flange A1, flange A 1 enters as medium
Mouthful flange or media outlet flange can be used bolt and the fixed forms such as fix, be welded and fixed, make pressure cylinder 3-1 with flange A
1 movement, pressure cylinder 3-1 is interior to be equipped at least two mutually independent pressure chamber 3-8 by 2 axial direction of work bellows, at each
It is set in pressure chamber 3-8 and matches there are one the cavity wall with pressure chamber 3-8 and slide the piston 3-2 of setting in pressure chamber 3-8, it is living
Setting sealing ring A 3-3 are sealed between plug 3-2 and pressure cylinder 3-1 side walls, and pressure chamber 3-8 is divided into seal chamber by piston 3-2
3-8-1 and discharge chamber 3-8-2 is equipped with the gas vent 3- being connected with extraneous air on the pressure cylinder 3-1 of the sides discharge chamber 3-8-2
8-4 avoids cavity when piston motion from influencing the movement of piston, piston is avoided in the position of venthole because volume-diminished pressure increases
Moving range.Multiple pressure chambers, which can be used, the form of diaphragm plate 3-5 is added in the inner cavity of pressure cylinder to be separated out multiple pressure chambers,
The setting of diaphragm plate 3-5 is to be divided into two or more chambers, the setting of cooperation piston 3-2 to form two pressure cylinder 3-1
A or multiple mutually independent chambers.After medium flows into each separate chamber, pressure acts on the gross area of piston and chamber
The pressure application surface of single chamber when being significantly greater than not provided with diaphragm plate is accumulated, thus, when one timing of pressure thrust, set accordingly
Pressure cylinder 3-1 outer diameters can be obviously reduced by setting the balance component structure of diaphragm plate, to reduce equipment overall dimension, and be mitigated
Weight of equipment.When cancelling diaphragm plate setting, although all displacements for also having the new-type straight pipe pressure-balancing type expansion joint are mended
Repay ability and balance pressure thrust function, but be oppositely arranged for the result of diaphragm plate, appearance and size is larger, weight of equipment compared with
Weight.
Universal linking lever component 3-7 is made of Universal linking lever 3-7-1 and flexible pipe 3-7-2, the axis center of Universal linking lever 3-7-1
For hollow structure, flexible pipe 3-7-2 is equipped in the hollow structure, flexible pipe 3-7-2 prevents Universal linking lever 3-7-1 at universal turn
The hollow structure at center can not be aligned when dynamic, and interior media can not circulate, and each pressure chamber 3- is stretched into one end of Universal linking lever 3-7-1
It is connect with each piston 3-2 in 8, and all piston 3-2 is driven to move in the same direction, Universal linking lever 3-7-1 stretches into the base apertures of pressure cylinder
In, it is sealed by sealing ring between base apertures, type of attachment one kind of Universal linking lever 3-7-1 and piston is directly to wear successively
Each piston is crossed, each piston is connected jointly, and protects being connect with the piston of the top for Universal linking lever 3-7-1 will not
It is connected to discharge chamber, makes the port sealing of Universal linking lever 3-7-1, or be not pierced by from piston, is directly sealed by piston, separately
One is hollow piston rod 3-4, the piston rod 3-4 and Universal linking lever 3-7-1 of end are added between piston and piston
Connection, piston rod 3-4 are sealed with diaphragm plate 3-5 circular-hole internal-walls by sealing ring B3-6, this kind of type of attachment, actually
It is to have carried out universal connection 3-7-1 to split combination, regardless of connection, ensures universal when being connected to vertically movable, drive and live
Plug is common mobile in the axial direction.
It offers on Universal linking lever 3-7-1 in seal chamber 3-8-1 or on piston 3-2 and is connected with flexible pipe 3-7-2
Conduction hole 3-8-3, the other end of Universal linking lever 3-7-1 connect with flange B4, and being offered in flange B4 makes flexible pipe 3-7-2
The medium flow field through-hole 4-1 being connected with expansion joint medium channel, makes medium flow field through-hole 4-1, flexible pipe 3-7-2 and seal chamber successively
It is connected, at least two universal joint 3-7-3 is equipped on the Universal linking lever 3-7-1 between pressure cylinder 3-1 and flange B4, that is, work as work
When plug movement, using increasing or reducing for seal chamber, the medium in expansion joint medium channel is sucked or is discharged seal chamber, works as work
When making the compression of bellows 2, the medium in the seal chamber 3-8-1 in pressure cylinder 3-1 at compression position increases with the sliding of piston 3-2
Add, when the bellows 2 that works stretches, the medium in the seal chamber 3-8-1 in pressure cylinder 3-1 at stretch position is with piston 3-2
Sliding increase, so that expansion joint is in equilibrium state.I.e. as shown in Fig. 5, Fig. 6, Fig. 7, vertical displacement, lateral displacement, angular displacement
When, balance component can therewith be adjusted with the deformation state of work bellows.
The section of medium flow field through-hole 4-1 is L-type.
Universal joint is universal ball joint, Hooke's joint, weiss universal joint, three pin shaft type universal joints or ball cage type ten thousand
Xiang Jie.
Equilibrium principle：Under working condition, two end flanges of expansion joint are connect with piping, and inside is situated between full of the medium that pressure is p
Matter enters through flexible pipe 3-7-2, conduction hole 3-8-3 in seal chamber 3-8-1 from the medium flow field through-hole 4-1 of flange B 4.As Fig. 5,
Shown in Fig. 6, Fig. 7.
To realize pressure balance, by the pressure cylinder 3-1 and multiple seal chambers for forming of piston 3-2 in m-th of balance component
The sum of cross-sectional area be Am（Piston 3-2 cross-sectional areas and Universal linking lever 3-7-1 in each balance component in all seal chambers
The sum of the difference of cross-sectional area）, the sum of cross-sectional area A m of all balance components should be equal to bellows effective area Ac（Refer to GB/T
12777-2008 standards）, that is, meeting following formula, i represents the number of the seal chamber in balance component,,For the cross-sectional area of i-th of seal chamber in m-th of balance component, i >=2.
Wherein, j is the total quantity of balance component, j >=2（1）
With 4 force analysis of flange B, under working condition, pressure thrust that flange is subject to
（2）
The power on piston is acted on by pressure p by balance component 3
（3）
By formula（1）Known to：
（4）
F2It is transferred to flange B 4 through piston 3-2 and Universal linking lever 3-7-1, the pressure thrust F all with flange B 41Size phase
Deng, direction on the contrary, the opposite force complete equipilibrium that the pressure thrust for therefore acting on flange can be provided by balance component 3, to disappear
Except expansion joint is to the active force of equipment, pressure balance is realized.
Such as use 8 balance components, each balance component that there is the expansion joint of 2 seal chambers, to realize pressure balance, often
A balance component should be equal to bellows effective area by the sum of pressure cylinder 3-1 and piston 3-2 seal chamber cross-sectional area A m formed
Ac（Refer to GB/T 12777-2008 standards）, that is, meet following formula.
（1）
A1=A11 A2=A21 A3=A31 A4=A41
A5=A51 A6=A61 A7=A71 A8=A81 (2)
With 4 force analysis of flange B, under working condition, pressure thrust that flange is subject to
（3）
The power on piston is acted on by pressure p by balance component 3
（4）
By formula（1）Known to：
（5）
Expansion joint is in equilibrium state at this time.
Bit shift compensation mode：
（1）Axial displacement occurs：When in pipeline full of the medium that pressure is p, Universal linking lever 3-7-1 is in exceptionally straight state, work
Bellows 2 occurs compression with pipe deforming or stretches, as shown in figure 5, because compatibility of deformation needs, pressure cylinder 3-1 and piston 3-2 hairs
Raw synchronous relative movement, reaches new steady s tate again.By above-mentioned equilibrium principle it is found that expansion joint is in pressure balance always
State.
（2）Lateral displacement occurs：When in pipeline full of the medium that pressure is p, Universal linking lever 3-7-1 is in exceptionally straight state.
Because the parallel transverse changing of the relative positions occurs for pipe deforming, lateral position occurs the flange A 1 and flange B 4 at expansion joint both ends for work bellows 2
It moves.As shown in Figure 6.By deformation compatibility condition it is found that Universal linking lever 3-7-1 will be occurred to turn by exceptionally straight state from universal joint at this time
It is dynamic, inclination is generated, and then all piston 3-2 is pulled to move down, realizes and stablize in new displacement.There is above-mentioned equilibrium principle can
Know, expansion joint is in pressure balance always.
（3）Angular displacement occurs：When in pipeline full of the medium that pressure is p, Universal linking lever 3-7-1 is in exceptionally straight state.It is swollen
With flange B 4 because the high side in pipe deforming side is low, angular displacement occurs the flange A 1 at swollen section both ends for work bellows 2.Such as figure
Shown in 6.By deformation compatibility condition it is found that Universal linking lever 3-7-1 will be rotated by exceptionally straight state from universal joint at this time, generate
It tilts, and then all piston 3-2 is pulled to move down, realize and stablize in new displacement.There is above-mentioned equilibrium principle it is found that expansion joint
Always it is in pressure balance.
The preferred embodiment that these are only the present invention, is not limited to or limits the present invention.For grinding for this field
Study carefully or technical staff for, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made by
Any modification, equivalent substitution, improvement and etc. should be included within the protection domain that the present invention is stated.
Claims (3)
1. a kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation, by sequentially connected flange A（1）, work bellows
（2）With flange B（4）Composition, in flange A（1）With flange B（4）Between work bellows（2）Exterior circumferential is equipped with multiple flat
Weigh component（3）, it is characterised in that：The balance component is by being fixed at flange A（1）On pressure cylinder（3-1）, piston
（3-2）With Universal linking lever component（3-7）Composition, pressure cylinder（3-1）It is interior to press work bellows（2）Axial direction is equipped at least two
Mutually independent pressure chamber（3-8）, in each pressure chamber（3-8）Inside set there are one and pressure chamber（3-8）Cavity wall match simultaneously
In pressure chamber（3-8）The piston of interior sliding setting（3-2）, pressure chamber（3-8）By piston（3-2）It is divided into seal chamber（3-8-1）
And discharge chamber（3-8-2）, in discharge chamber（3-8-2）The pressure cylinder of side（3-1）It is equipped with the gas vent being connected with extraneous air
（3-8-4）, the Universal linking lever component（3-7）By Universal linking lever（3-7-1）And flexible pipe（3-7-2）Composition, Universal linking lever
（3-7-1）Axis center be hollow structure, in the hollow structure be equipped with flexible pipe（3-7-2）, Universal linking lever（3-7-1）One
Each pressure chamber is stretched at end（3-8）Interior and each piston（3-2）Connection, and drive all pistons（3-2）Movement in the same direction, in seal chamber
（3-8-1）Interior Universal linking lever（3-7-1）Upper or piston（3-2）On offer and flexible pipe（3-7-2）The conduction hole being connected
（3-8-3）, Universal linking lever（3-7-1）The other end and flange B（4）Connection, in flange B（4）Inside offering makes flexible pipe（3-7-
2）The medium flow field through-hole being connected with expansion joint medium channel（4-1）, make medium flow field through-hole（4-1）, flexible pipe（3-7-2）With it is close
Envelope chamber be sequentially connected it is logical, in pressure cylinder（3-1）With flange B（4）Between Universal linking lever（3-7-1）It is universal to be equipped at least two
Section（3-7-3）, when work bellows（2）When compression, the pressure cylinder at compression position（3-1）Interior seal chamber（3-8-1）Interior
Medium is with piston（3-2）Sliding increase, when work bellows（2）When stretching, the pressure cylinder at stretch position（3-1）Interior is close
Seal chamber（3-8-1）Interior medium is with piston（3-2）Sliding increase, so that expansion joint is in equilibrium state.
2. a kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation as described in claim 1, it is characterised in that：It is described
Medium flow field through-hole（4-1）Section be L-type.
3. a kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation as described in claim 1, it is characterised in that：It is described
Universal joint be universal ball joint, Hooke's joint, weiss universal joint, three pin shaft type universal joints or rzeppa joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325759.5A CN108468895B (en) | 2018-04-12 | 2018-04-12 | A kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325759.5A CN108468895B (en) | 2018-04-12 | 2018-04-12 | A kind of straight pipe pressure-balancing type expansion joint with three-dimensional compensation |
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| CN108468895A true CN108468895A (en) | 2018-08-31 |
| CN108468895B CN108468895B (en) | 2019-10-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440071A (en) * | 2019-08-14 | 2019-11-12 | 谭士龙 | A kind of Quick-attachable expansion joint |
| CN110748735A (en) * | 2019-11-01 | 2020-02-04 | 江苏崇畅机械有限公司 | High-temperature air pipe hydraulic drive expansion joint |
| CN112554896A (en) * | 2020-12-23 | 2021-03-26 | 安徽铜都流体科技股份有限公司 | Shield constructs quick-witted pipe connector and uses flexible mechanism |
| CN115046065A (en) * | 2022-06-01 | 2022-09-13 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440071A (en) * | 2019-08-14 | 2019-11-12 | 谭士龙 | A kind of Quick-attachable expansion joint |
| CN110440071B (en) * | 2019-08-14 | 2020-12-25 | 江苏博格东进管道设备有限公司 | Quick assembly disassembly formula expansion joint |
| CN110748735A (en) * | 2019-11-01 | 2020-02-04 | 江苏崇畅机械有限公司 | High-temperature air pipe hydraulic drive expansion joint |
| CN112554896A (en) * | 2020-12-23 | 2021-03-26 | 安徽铜都流体科技股份有限公司 | Shield constructs quick-witted pipe connector and uses flexible mechanism |
| CN115046065A (en) * | 2022-06-01 | 2022-09-13 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type bellows expansion joint with distributing type floating structure |
| CN115046065B (en) * | 2022-06-01 | 2024-01-19 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type corrugated pipe expansion joint with distributed floating structure |
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| Publication number | Publication date |
|---|---|
| CN108468895B (en) | 2019-10-08 |
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Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |