CN104048135A - Corrugated pipe assembly - Google Patents
Corrugated pipe assembly Download PDFInfo
- Publication number
- CN104048135A CN104048135A CN201310084183.5A CN201310084183A CN104048135A CN 104048135 A CN104048135 A CN 104048135A CN 201310084183 A CN201310084183 A CN 201310084183A CN 104048135 A CN104048135 A CN 104048135A
- Authority
- CN
- China
- Prior art keywords
- corrugated pipe
- bellows component
- rod member
- axial end
- pipe segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
Abstract
The invention provides a corrugated pipe assembly. A first axial end and a second axial end are limited by a first corrugated pipe section provided with a first diameter. A first axial end and a third axial end are limited by a second corrugated pipe section with a second diameter different from the first diameter. The first corrugated pipe section and the second corrugated pipe section are connected at the first axial ends and limit a connecting part. At least one length regulating mechanism is configured into a part capable of regulating the axial position of a connecting part on the basis of the length change of the corrugated pipe assembly, wherein the length regulating mechanism comprises a first rod element, a second rod element and a linkage structure, and the linkage structure is arranged on the second axial end of the first corrugated pipe section. One end of the first rod element is connected to the third axial end of the second corrugated pipe section, and in addition, the other end of the first rod element is connected to one end of the linkage structure. One end of the second rod element is connected to the connecting part, and in addition, the other end of the second rod element is connected to the other end of the linkage structure.
Description
Technical field
The present invention relates to a kind of bellows component, especially relate to the bellows component using in the pressurized container of for example Cubicle Gas-Insulated Switchgear (GIS).
Background technique
Bellows is generally used for compensating axial length, and is widely used in industrial field such as pressurized container, pipeline conveying etc.Bellows especially can be used for Cubicle Gas-Insulated Switchgear (GIS).For example, in the bus of GIS, adopt bellows to seal and absorb the shell deformation causing of expanding with heat and contract with cold, thus the electric elements that protection is wherein held, and in this bellows, conventionally there is High-Voltage Insulation gas.People understand, the power of expanding with heat and contract with cold for example producing due to temperature variation can cause the axial length of equipment to change.The variation of axial length and then may cause housing to break, device damage.At other field, such as petrochemical industry, pressurized container etc. need to adopt bellows to carry or the field that holds object exists such problem equally.Therefore, people wish to reduce or overcome the problem of this length change.
A kind of method that prior art provides is to adopt elastic construction to slow down and absorb the length change of bellows, for example CN101582569A and CN201680105U disclose pressure-balancing type expansion joint, and they wish to absorb the aforesaid power of expanding with heat and contract with cold by the axially extended folded spring pull bar that is fixed to bellows.
The another kind of method that prior art provides is to provide balance bellows component, and this bellows component still keeps the substantially constant or Volume Changes of bellows inner volume within the specific limits in the time that total length changes, and carrys out the aforesaid power of expanding with heat and contract with cold of balance with this.
CN202183578U discloses a kind of for the pressure balanced slip joint of GIS bus.The explanatory view of this slip joint shown in Fig. 1 (bellows component 100 "); it comprises first, second, and third corrugated pipe segment 101,102 and 103, and have equal minor diameter first and the 3rd corrugated pipe segment 101 and 103 be connected to respectively the axial two ends with large diameter the second corrugated pipe segment 102.Between these corrugated pipe segments, be separately installed with the first flange 106, the second flange 107, three-flange 108 and the 4th flange 109 with axial end, and first and three-flange between be connected with rigid bar 104, be connected with another rigid bar 105 that is independent of rigid bar 104 second and the 4th between flange.Similarly, adjacent flange, if the motion between the first and second flanges or between the third and fourth flange is also independent of each other.Thus, in the time of the length change of bellows component, the corresponding change of length of each corrugated pipe segment is to keep the internal volume of bellows component substantially constant.For example, when the first flange 106 to left movement one apart from △ L, the 4th flange 109 maintains static, the entire length of bellows component has reduced △ L, now rod member 104 drive three-flange 108 to left movement the distance of △ L, and rod member 105 and second and the 4th flange keep motionless, now first and the 3rd corrugated pipe segment all reduced the length of △ L, the second corrugated pipe segment has increased the length of △ L.If by keeping the substantially constant and counterpressure of volume, can obtain so thus the diameter D of the second corrugated pipe segment
greatlywith first and the diameter D of the 3rd corrugated pipe segment
littleneed meet D
greatly≈ 1.44D
little.In a word, in this bellows component, because the relative movement of the first and second rod members is independently, the axial motion of adjacent flange is independent, keep bellows component internal volume constant, and corrugated pipe segment diameter ratio can only be selected aforementioned proportion.
Similar structure is also open in CN201708463U, CN20229495U, CN202469348U.
Although having proposed kinds of schemes, prior art carrys out for example pressure because expanding with heat and contract with cold in caused bellows component of balance, but people are still desirable to provide the bellows component that cost is cheaper, and can select more neatly bellows size, especially radial dimension.
Summary of the invention
The present invention aim to provide a kind of simple in structure, corrugated pipe segment is few and in the time selecting corrugated pipe segment radial dimension, have the bellows component of larger degrees of freedom.
For achieving the above object, the present invention proposes a kind of bellows component, comprising: have the first corrugated pipe segment of the first diameter, it limits the first axial end and the second axial end.Have the second corrugated pipe segment of the Second bobbin diameter that is different from the first diameter, it limits the first axial end and the 3rd axial end, and described the first and second corrugated pipe segments are connected and limit a junction at the first axial end.At least one length adjusting mechanism, it is configured to adjust based on the length change of bellows component the axial position of described joint, and wherein said length adjusting mechanism comprises that first rod member, second rod member and one are mounted to the linkage structure of the second axial end of described the first corrugated pipe segment.One end of described the first rod member is connected to the 3rd axial end of described the second corrugated pipe segment and the other end and is connected to one end of described linkage structure.One end of described the second rod member is connected to described joint and the other end and is connected to the other end of described linkage structure.The axial position of joint is adjusted in variation by length adjusting mechanism based on bellows component, thereby the motion between joint and the other axial end of the first or second corrugated pipe segment is associated, but not independent of each other.Thus, the Length Ratio of the first and second corrugated pipe segments can change and respective change based on the axial position of this joint.In this case, in this bellows component, two sections of corrugated pipe segments can be only set and save the 3rd corrugated pipe segment; Can more freely select the diameter ratio of the first and second corrugated pipe segments simultaneously, without being subject to the such strict restriction of prior art, and still can substantially keep bellows component internal volume constant or make its internal volume fluctuation restriction within the specific limits.By providing linkage structure that the axial motion of the first and second rod members is associated, for example can be as required, by selecting the transmission of suitable linkage structure recently to make the amount of axial movement (position) of joint and the variation of bellows length change pro rata, thereby can select the radial dimension (diameter or radius) of desirable the first and second corrugated pipe segments to compare.
According to a specific embodiment of the present invention, wherein said the first diameter is greater than described Second bobbin diameter.
According to a particularly preferred embodiment, described linkage structure has a velocity ratio, and described velocity ratio and described the first and second diameters are so selected:
Wherein, D1 is the first diameter, and D2 is Second bobbin diameter, and n is velocity ratio.In the preferred embodiment, people can make the internal volume of bellows component substantially constant by the suitable transmission specific energy of selecting linkage structure by understanding.
According to a particularly preferred embodiment, described linkage structure is lever construction, described lever construction comprises pivot and be arranged on the lever piece on pivot, and the two ends of described lever piece are connected to respectively described the first and second rod members, and this provides particularly simple linkage structure.
According to another preferred embodiment, described linkage structure is gear transmission structure, and described gear transmission structure comprises the first gear engaging with described the first rod member, the second gear engaging with described the second rod member and the intermediate gear engaging with described the first and second gears.
According to further embodiment, described bellows component also comprise the second axial end that is mounted to described the first corrugated pipe segment the first flange, be mounted to second flange and the spacer flanger that is connected described the first and second corrugated pipe segments of the 3rd axial end of described the second corrugated pipe segment, this is convenient to the installation of length adjusting mechanism.
According to a specific embodiment, linkage structure is connected to the first flange, and described one end of the first rod member is connected to described the second flange; Described one end of described the second rod member is connected to described spacer flanger.
Preferably, described spacer flanger is provided with the grooving passing for described the first rod member, thereby provides compact radial dimension for bellows component.This grooving also can be used for limiting the excessive circumferential displacement of described the first rod member and corrugated pipe segment.
According to a preferred embodiment, the curved or V-arrangement of described lever piece, lever piece and rod member extend axially and exceed corrugated pipe segment when preventing bellows length change.
According to another aspect of the present invention, a kind of Cubicle Gas-Insulated Switchgear (GIS), comprises that at least one is according to bellows component of the present invention.For example multiple according to corrugated pipe segment of the present invention can connect arrange for the bus of GIS.
Brief description of the drawings
The following drawings is only intended to the present invention to schematically illustrate and explain, not delimit the scope of the invention.Wherein,
Fig. 1 shows the structural representation for the existing bellows component of GIS;
Fig. 2 shows according to bellows component of the present invention embodiment's radial side view;
Fig. 3 shows the embodiment's of the bellows component shown in Fig. 2 stereogram;
Fig. 4 shows the embodiment's of the bellows component shown in Fig. 2 end-view;
Fig. 5 shows according to linkage structure of the present invention embodiment;
Fig. 6 shows another embodiment according to linkage structure of the present invention;
Fig. 7 shows the embodiment again according to linkage structure of the present invention.
Reference numerals list
1-the first corrugated pipe segment 3 '-the first rod member
2-the second corrugated pipe segment 4 '-the second rod member
3-first rod member 5 '-lever piece
4-the second rod member 5 ' '-lever piece
5-lever piece 5 ' ' '-lever piece
6-pivot 10 '-linkage structure
7-the first flange 10 "-linkage structure
8-the second flange 100-bellows component
9-spacer flanger 100 ' '-bellows component
10-linkage structure 101-the first corrugated pipe segment
11-fixing part 102-the second corrugated pipe segment
The 12-bar 103-of portion the 3rd corrugated pipe segment
13-articulated section 104-the first rod member
14-articulated section 105-the second rod member
15-grooving 106-the first flange
16-fixing part 107-the second flange
The 17-bar 108-of portion three-flange
18-articulated section 109-the 4th flange
19-articulated section A-the first axial end
20-inner chamber B-the second axial end
21-the first gear C-tri-axial ends
22-the second gear
23-intermediate gear
Embodiment
Understand for technical characteristics of the present invention, object and effect being had more clearly, now contrast brief description of the drawings specific embodiments of the invention.Although it is in order to present some embodiments of the present invention that accompanying drawing is provided, accompanying drawing needn't be drawn by the size of specific embodiment, and some feature can be exaggerated, removes or dissect better to illustrate and explain disclosure of the present invention.
In explanation, be used to describe some directional terminology of accompanying drawing, for example " on ", D score, " left side ", " right side ", " upwards ", " downwards " and other directional terminology, have its normal implication by being understood to and related those directions while often seeing respective drawings of making a comment or criticism, this should not be construed as the concrete restriction of the technological scheme to claims.
Term " about " in the present invention or " approximately " will be understood by those of ordinary skill in the art and will change within the specific limits according to the context of using this term.
Accompanying drawing 2-4 illustrates according to bellows component of the present invention embodiment.This bellows component 100 can be applicable in pressurized container, such as the pressurized container in the field such as petrochemical industry, pipeline conveying.This bellows component 100 especially can use in Cubicle Gas-Insulated Switchgear (GIS), in switch gear as gas-insulating and fully-enclosed in SF6.
This bellows component 100 comprises two sections of tubular corrugated pipe segments, i.e. the first corrugated pipe segment 1 and the second corrugated pipe segment 2.Preferably, this bellows component only has two sections of corrugated pipe segments.The first corrugated pipe segment 1 has the first larger diameter, and corrugated pipe segment 2 has less Second bobbin diameter.The first corrugated pipe segment 1 limits the first axial end A and the second axial end B separately.The second corrugated pipe segment 2 limits the first axial end A and the 3rd axial end C separately.The first and second corrugated pipe segments are axially connected and limit joint at their the first axial end A, thereby in bellows component 100, limit the inner chamber 20 that holds for example electric elements and blanketing gas.Herein, the first axial end A, the second axial end B and the 3rd axial end C refer to the position of corrugated pipe segment on axially.
As shown in the figure, the first corrugated pipe segment 1 is connected by spacer flanger 9 with the second corrugated pipe segment 2.This spacer flanger 9 is arranged on the first axial end A(joint of the first and second corrugated pipe segments) locate.In addition, be provided with the first flange 7 at the second axial end B of the first corrugated pipe segment 1, and be provided with the second flange 8 at the 3rd axial end C of the second corrugated pipe segment 2.In the termination of corrugated pipe segment or connection part flange is set is well known by persons skilled in the art, do not repeat them here.
Below in conjunction with accompanying drawing in detail length adjusting mechanism of the present invention is described in detail.As previously mentioned, in the time that the entire length of bellows component changes, this length adjusting mechanism is suitable for adjusting the axial position of joint, and then the relative length of adjustment the first corrugated pipe segment 1 and the second corrugated pipe segment 2, when thereby bellows component length changes within the specific limits, the substantially constant or mobility scale of the volume of bellows component inner chamber 20 is no more than threshold values.
In an illustrated embodiment, four length adjusting mechanisms being circumferentially uniformly distributed around the first and second corrugated pipe segments 1,2.But people can expect, the length adjusting mechanism of more or less can be set around the first and second corrugated pipe segments 1,2 distributions.
In the embodiment with reference to figure 2-4 and Fig. 5, this length adjusting mechanism comprises axially extended the first rod member 3 and the second rod member 4 and is the linkage structure 10 of lever construction form.
This first rod member 3 is push-and-pull rod form and can has fixing part 11 and pass through the articulated section 13 bar portion 12 hinged with this fixing part 11.This fixing part 11 is for example fixedly attached to the second flange 8 by screw.One end away from fixing part 11 of this bar portion 12 is hinged with one end of lever piece 5 by articulated section 14.This second rod member 4 also can be rigid bar form and can have and is fixed to the fixing part 16 of spacer flanger 9 and by the hinged bar portion 17 of articulated section 18 and fixing part 16.One end away from fixing part 16 of this bar portion 17 is hinged with the other end of lever piece 5 by articulated section 19.Although specifically illustrated a kind of structure of rigid bar, other rigid construction is also feasible.
This lever construction can comprise the pivot 6 that is fixed to or is integrally formed on the first flange 7 and the lever piece 5 that can pivot installation.Lever piece 5 limits respectively lever segments 5 ' and 5 in pivot both sides ", what be wherein connected with the first rod member 3 is the first lever segments 5 ', what be connected with the second rod member 4 is the second lever segments 5 ".
As shown in Figure 3, be circumferentially provided with along it grooving 15 that multiple confession the first rod members 3 extend through at spacer flanger 9.By this grooving 15 is set, allow bellows component to there is less radial dimension on the one hand, this grooving also can play the effect of the excessive circumferential movement of restriction corrugated pipe segment on the other hand.
According to a preferred embodiment of the invention, when the length of bellows component is for example because expand with heat and contract with cold or other vibrations or motion and while changing within the specific limits, cavity volume can be substantially constant, to realize compensation, avoids internal pressure to make bellows distortion.Although do not intend limit by following principle, the relation of the existing explanation diameter (or radius) of the first and second corrugated pipe segments of signal by reference to the accompanying drawings and the length (or leverage factor) of the first and second lever segments.Wherein, the length of the first lever segments 5 ' approximates greatly the distance of pivot 6 to articulated section 14, and the second lever segments 5 " length approximate greatly the distance of pivot 6 to articulated section 19.
Taking Fig. 2 as example, suppose that the first flange 7 keeps motionless, and the second flange 8 has moved right the distance of △ L, (bellows component 100 entire length reduce), the first rod member 3 is with the second flange 8 axial motion to the right, and then promote the second rod member 4 axial motion left by leverage 10, thereby spacer flanger 9 is also to left movement.Thus, it is large that the length of the first corrugated pipe segment 1 (volume) becomes, and the length of the second corrugated pipe segment 2 (volume) diminishes, and bellows component inner chamber 20 total volumes are constant.There is following equation:
V1=V2
Wherein V1 is the volume that the first corrugated pipe segment 1 increases, and V2 is the volume that the second corrugated pipe segment 2 reduces.
And then:
Wherein, R
1be the radius of the first corrugated pipe segment, L
largebe the length that the first corrugated pipe segment increases, R
2be the radius of the second corrugated pipe segment, L
smallbe the length that the second corrugated pipe segment reduces.
The transmission ratios of lever construction is:
n=L
2/L
1
Wherein n is velocity ratio, L
1be the first lever segments length, L
2be the second lever segments length.
So, have:
L
large=n△L
L
small=(1+n)△L
Thus, can derive and draw:
Wherein D
1be the first corrugated pipe segment diameter, D
2it is the second corrugated pipe segment diameter.
Although above situation about reducing based on bellows component length is described, but can expect also can becoming and deriving greatly similar structure according to bellows component length, also, in the situation that the second flange maintains static but the first flange moves or move equally, derive similar results.
Thus, under instruction of the present invention, people can select the first suitable corrugated pipe segment and the diameter ratio of the second corrugated pipe segment based on actual demand by understanding, and need not be subject to the radial dimension proportional limit of the existing bellows component of picture.In addition, people will understand that above-mentioned derivation is only the restriction while ideally requiring bellows component cavity volume constant, but are equal to it or approximate scheme all falls into scope of the present invention.And based on this instruction, those skilled in the art can select the diameter ratio of the first and second suitable corrugated pipe segments in the situation that allowing bellows component cavity volume to change within the specific limits.
Although above embodiment illustrates the first diameter of the first corrugated pipe segment 1 and be greater than the Second bobbin diameter of the second corrugated pipe segment 2, also feasible conversely when length adjusting mechanism is done corresponding change, these schemes all fall into scope of the present invention.
With reference to figure 6, show another embodiment of linkage structure 10 ', wherein lever piece 5 ' ' ' be made into arc or V-arrangement, thereby in the time of bellows component length change, lever piece 5 ' ' ' and corresponding rod member in axial direction can not extend beyond corresponding flange.
With reference to figure 7, show linkage structure 10 " embodiment again; wherein this linkage structure 10 " be gear configurations, and comprise the first gear 21 being meshed with the first rod member 3 ', the second gear 22 being meshed with the second rod member 4 ' and the intermediate gear 23 engaging with the first gear 21 and the second gear 22.Based on instruction of the present invention, when people are n by clear this gear structure of hypothesis for the velocity ratio of replacing the lever construction of the embodiment shown in Fig. 2 and have, have equally:
Be to be understood that, although this specification is described according to each embodiment, but be not that each embodiment only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, technological scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
The foregoing is only the schematic specific embodiment of the present invention, not in order to limit scope of the present invention.Any those skilled in the art, not departing from equivalent variations, amendment and the combination done under the prerequisite of design of the present invention and principle, all should belong to the scope of protection of the invention.
Claims (9)
1. a bellows component, comprising:
Have first corrugated pipe segment (1) of the first diameter, it limits the first axial end (A) and the second axial end (B);
Have second corrugated pipe segment (2) of the Second bobbin diameter that is different from the first diameter, it limits the first axial end (A) and the 3rd axial end (C), and described the first and second corrugated pipe segments (1,2) are connected and limit a junction at the first axial end (A);
At least one length adjusting mechanism, it is configured to adjust based on the length change of bellows component (100) axial position of described joint, wherein said length adjusting mechanism comprises first rod member (3,3 '), second rod member (4,4 ') and a linkage structure (10 that is mounted to second axial end (B) of described the first corrugated pipe segment (1), 10 ', 10 ");
One end of described the first rod member (3,3 ') is connected to the 3rd axial end (C) of described the second corrugated pipe segment (2) and the other end and is connected to one end of described linkage structure (10,10 ', 10 ");
One end of described the second rod member (4,4 ') is connected to described joint and the other end and is connected to the other end of described linkage structure (10,10 ', 10 ").
2. bellows component according to claim 1, is characterized in that, described the first diameter is greater than described Second bobbin diameter.
3. bellows component according to claim 2, is characterized in that, described linkage structure (10,10 ', 10 ") there is velocity ratio, this velocity ratio and described the first and second diameters are so selected:
Wherein, D
1be the first diameter, D
2for Second bobbin diameter, n is velocity ratio.
4. bellows component according to claim 1, it is characterized in that, described linkage structure (10,10 ') be lever construction, described lever construction comprises pivot (6) and is arranged on the lever piece (5) on described pivot (6), the two ends of described lever piece (5) are connected to respectively described the first and second rod members (3,4).
5. bellows component according to claim 1, it is characterized in that, described linkage structure (10 ") be gear transmission structure, described gear transmission structure comprises the first gear (21) engaging with described the first rod member (3 '), the second gear (22) engaging with described the second rod member (4 ') and the intermediate gear (23) engaging with described the first and second gears.
6. bellows component according to claim 1, it is characterized in that, described bellows component (100) comprise be mounted to described the second axial end (B) the first flange (7), be mounted to second flange (8) and the spacer flanger (9) that is connected described the first and second corrugated pipe segments (1,2) of described the 3rd axial end (C).
7. bellows component according to claim 6, is characterized in that, and described linkage structure (10,10 ', 10 ") be connected to described the first flange (7), described one end of described the first rod member (3,3 ') is connected to described the second flange (8); Described one end of described the second rod member (4,4 ') is connected to described spacer flanger (9).
8. bellows component according to claim 6, is characterized in that, described spacer flanger (9) is provided with the grooving (15) passing for described the first rod member (3,3 ').
9. a Cubicle Gas-Insulated Switchgear, comprises that at least one is according to the bellows component one of claim 1 to 8 Suo Shu (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084183.5A CN104048135A (en) | 2013-03-15 | 2013-03-15 | Corrugated pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084183.5A CN104048135A (en) | 2013-03-15 | 2013-03-15 | Corrugated pipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104048135A true CN104048135A (en) | 2014-09-17 |
Family
ID=51501340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310084183.5A Pending CN104048135A (en) | 2013-03-15 | 2013-03-15 | Corrugated pipe assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104048135A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882399A (en) * | 2019-11-29 | 2021-06-01 | 财团法人金属工业研究发展中心 | Automatic level adjustment system in vacuum chamber and vacuum flying height adjuster |
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| US3819210A (en) * | 1972-05-08 | 1974-06-25 | Johns Manville | Method and assembly for controlling thrust forces in a pipe arrangement |
| CN201129590Y (en) * | 2007-12-21 | 2008-10-08 | 秦皇岛市泰德管业科技有限公司 | Special external pressure type straight pipe pressure equilibrium type corrugated pipe expansion node for coal gasification apparatus |
| CN201944477U (en) * | 2010-12-27 | 2011-08-24 | 洛阳双瑞特种装备有限公司 | Straight pipe pressure-balancing type expansion joint for gasoline adsorption and desulfurization device |
| CN202183578U (en) * | 2011-05-19 | 2012-04-04 | 平高集团有限公司 | Telescopic joint for pressure balancing of GIS (geographic information system) busbar |
| CN202660138U (en) * | 2012-05-29 | 2013-01-09 | 滕州市绿原机械制造有限责任公司 | Pressure-balance corrugated expansion joint for straight pipe |
| CN202746835U (en) * | 2012-05-26 | 2013-02-20 | 黄东 | High-pressure balanced compensator |
-
2013
- 2013-03-15 CN CN201310084183.5A patent/CN104048135A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3659879A (en) * | 1970-07-16 | 1972-05-02 | Combustion Eng | Duct positioner for the control of thermal expansion |
| US3819210A (en) * | 1972-05-08 | 1974-06-25 | Johns Manville | Method and assembly for controlling thrust forces in a pipe arrangement |
| CN201129590Y (en) * | 2007-12-21 | 2008-10-08 | 秦皇岛市泰德管业科技有限公司 | Special external pressure type straight pipe pressure equilibrium type corrugated pipe expansion node for coal gasification apparatus |
| CN201944477U (en) * | 2010-12-27 | 2011-08-24 | 洛阳双瑞特种装备有限公司 | Straight pipe pressure-balancing type expansion joint for gasoline adsorption and desulfurization device |
| CN202183578U (en) * | 2011-05-19 | 2012-04-04 | 平高集团有限公司 | Telescopic joint for pressure balancing of GIS (geographic information system) busbar |
| CN202746835U (en) * | 2012-05-26 | 2013-02-20 | 黄东 | High-pressure balanced compensator |
| CN202660138U (en) * | 2012-05-29 | 2013-01-09 | 滕州市绿原机械制造有限责任公司 | Pressure-balance corrugated expansion joint for straight pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882399A (en) * | 2019-11-29 | 2021-06-01 | 财团法人金属工业研究发展中心 | Automatic level adjustment system in vacuum chamber and vacuum flying height adjuster |
| CN112882399B (en) * | 2019-11-29 | 2022-07-05 | 财团法人金属工业研究发展中心 | Automatic level adjustment system in vacuum chamber and vacuum flying height adjuster |
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Application publication date: 20140917 |