CN107461563A - A kind of bellows expansion joint detection means and method - Google Patents
A kind of bellows expansion joint detection means and method Download PDFInfo
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- CN107461563A CN107461563A CN201710684485.4A CN201710684485A CN107461563A CN 107461563 A CN107461563 A CN 107461563A CN 201710684485 A CN201710684485 A CN 201710684485A CN 107461563 A CN107461563 A CN 107461563A
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 239000011148 porous material Substances 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/022—Test plugs for closing off the end of a pipe
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/083—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for tubes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention relates to a kind of bellows expansion joint detection means, including：Test device, locking member, pull bar, end plate and seal, the end plate include first end plate and the second end plate, and the end plate outer circumferential edges are provided with multiple mounting holes, and medium position is provided with through hole；The locking member is arranged on the pull bar, and for the end plate to be anchored on into the bellows expansion joint both ends, the end plate is provided with seal with the bellows expansion internode, and the pull bar is disposed through in the mounting hole of two end plates；Two through hole of the test device respectively with the end plate is connected, the present invention can not set to the bellows expansion joint provided with flange connection surface and the bellows expansion joint of flange connection surface and realize experiment to its sealing, and experimental rig is simple in construction, easy installation and removal, and experimental rig and bellows expansion joint are put into water simultaneously, are easy to the test to sealing.
Description
Technical field
The present invention relates to special safety equipment field, more particularly to a kind of bellows expansion joint experimental rig and method.
Background technology
Bellows expansion joint is expansion joint that is a kind of being fabricated by metal bellows and can in axial direction stretching, by
In the effect of environment, the phenomenon expanded with heat and contract with cold can usually occur in use in bellows expansion joint so that bellows expansion
Section stress is complicated and is easily damaged, therefore《Metal corrugated pipe expansion joint general technical specifications》In require that bellows expansion joint
Pressure-resistant performance should be tested by pressure test, and after bellows expansion joint dispatches from the factory, also require that installation is single using unit
Position carries out seal tightness test to bellows expansion joint again, and a kind of bellows expansion joint also needs to meet a variety of seal tightness test sides
Formula.
At present, the device tested bellows expansion joint is complicated, and installing/dismounting is constant, same bellows expansion joint
Experimental rig can not meet a variety of sealings to bellows expansion joint, while existing bellows expansion joint experimental rig needs
Bellows expansion joint, which carries, to coordinate installing/dismounting flange with bellows expansion joint experimental rig, therefore without the bellows of flange
Expansion joint is difficult to carry out seal tightness test, and during routine test, is only capable of testing single expansion joint, examination be present
Test the defects of number is more, and test efficiency is relatively low, and proof strength is larger.
Therefore, the bellows expansion joint detection means for how to design a kind of efficiency high, being capable of quick detection turns into this area
The problem of urgent need to resolve.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of bellows expansion joint detection means and method, can to provided with
The bellows expansion joint of flange connection surface and the bellows expansion joint of flange connection surface is not set realize experiment to its sealing, and
And experimental rig is simple in construction, easy installation and removal, and experimental rig and bellows expansion joint are put into water simultaneously, are easy to close
The test of envelope property.
To solve the above problems, the technical solution adopted by the present invention is：
A kind of bellows expansion joint detection means, including：Test device, locking member, pull bar, end plate and seal, wherein,
The end plate includes first end plate and the second end plate, and the first end plate and the second end plate outer circumferential edges are set
Multiple mounting holes are equipped with, medium position is provided with through hole；
The locking member is arranged on the pull bar, described for the first end plate and second end plate to be anchored on
Bellows expansion joint both ends, the first end plate, second end plate and the bellows expansion internode are provided with seal, institute
Pull bar is stated to be disposed through in the mounting hole of the first end plate and the second end plate；
Two through hole of the test device respectively with the end plate is connected.Further, the first end plate, described second
The binding face of end plate and the seal is provided with cascade groove, and the through hole of the end plate is arranged in the middle part of the groove.
Further, the intermediate plate of the bellows expansion joint of the different sections of connection is included, the intermediate plate middle part, which is provided with, to be connected
Through hole, seal is provided between the intermediate plate and the bellows expansion joint both ends.
Further, intermediate plate both sides joint face is symmetrically arranged with cascade groove, the intercommunicating pore of the intermediate plate
It is arranged in the middle part of the intermediate plate cascade groove.
Further, it is mutually corresponding between the mounting hole that the end plate is provided with the intermediate plate, it is the end plate, described
Intermediate plate is detachably fixed with the pull bar and is connected.
Further, the end plate and the intermediate plate are flanged plate.
Further, the seal is O-ring seal.
Further, the pull bar is threaded rod, and the locking member is nut.
Further, the through hole that the first end plate is set is air admission hole, and the through hole that second end plate is set is outlet
Hole.
Meanwhile the invention provides a kind of method of bellows expansion joint detection, comprise the following steps：
1) more pull bars are arranged to the mounting hole of first end plate, and are fixed on first end plate and seal with locking member
One end of bellows expansion joint；
2) mounting hole of the second end plate is passed through into more pull bars, and be fixed on the second end plate and seal by locking member
The other end of bellows expansion joint；
3) by the mounting hole of intermediate plate with being connected with pull bar more, and continue to connect the in the way of step 1), step 2)
Two section bellows expansion joints；
4) detection means is connected with the air admission hole and venthole of a section or more piece bellows expansion joint both ends, to bellows
Expansion joint is detected.
The beneficial effects of the present invention are：
(1) can to the bellows expansion joint provided with flange connection surface and do not set flange connection surface bellows expansion joint realize
Experiment to its sealing, and experimental rig is simple in construction, easy installation and removal, and experimental rig and bellows expansion joint are same
When be put into water, be easy to the test to sealing；
(2) while the test to multiple bellows expansion joint sealings is realized, end plate, intermediate plate are provided with stair-stepping recessed
Groove, same detection means is applicable to the bellows expansion joint of different-diameter, while is cooperated with seal, adds close
Feng Xing.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of bellows expansion joint detection means of the present invention；
Fig. 2 is the end plate schematic diagram of the present invention；
Fig. 3 is the end plate sectional view of the present invention；
Fig. 4 is the intermediate plate schematic diagram of the present invention；
Fig. 5 is the sectional view of intermediate plate of the present invention.
Wherein, the groove of 1. pull bar, 2. locking member, 3. bellows expansion joint, 4. end plate, 5. seal, 41. through hole 43.
6. the mounting hole of 61. intercommunicating pore of intermediate plate 7..
Embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.It is exemplary for note that the embodiments described below, is only used for explaining the present invention, and
It is not considered as limiting the invention.Unreceipted particular technique or condition in embodiment, according to document institute in the art
The technology or condition of description are carried out according to product description.Agents useful for same or the unreceipted production firm person of instrument, being can
To pass through the conventional products of acquisition purchased in market.
In the description of the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention,
" multiple " are meant that two or more, unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
According to an aspect of the present invention, the invention provides a kind of bellows expansion joint detection means, Fig. 1 is the present invention
A kind of bellows expansion joint detection means schematic diagram, as shown in figure 1, mainly include test device, locking member, pull bar, end
Plate and seal.
According to a particular embodiment of the invention, as shown in figure 1, bellows expansion joint is respectively arranged with an end plate, respectively
For first end plate and the second end plate, Fig. 2 is the end plate schematic diagram of the present invention, and Fig. 3 is the end plate sectional view of the present invention, such as Fig. 2 and
Shown in Fig. 3, the first end plate, the second end plate outer circumferential edges are provided with multiple mounting holes, and medium position is provided with through hole,
In certain specific embodiments of the invention, described multiple mounting holes are evenly distributed on the end plate outer circumferential edges, make lock
Uniformly exerted a force during tight part locking end plate to end plate.
According to a particular embodiment of the invention, the locking member is arranged on the pull bar, for the end plate to be fastened
In the bellows expansion joint both ends, the first end plate, the second end plate and the bellows expansion internode are provided with seal,
The pull bar be disposed through the first end plate, the second end plate the mounting hole in；End plate is dismountable solid with pull bar
Fixed connection.Certainly, the fixed form between end plate and pull bar in of the invention is not particularly restricted, and can use a variety of sides
Formula, in other implementations, the pull bar 1 can be fixedly connected with one end and the end plate 4, such as welding, snapping.
For example, in wherein a kind of embodiment, the both ends of the bellows expansion joint 3 are flange face, and flange face is set
Mounting hole 7 is equipped with, one end of the more pull bars 1 is connected with an end plate 4, the more pull bars 1 sequentially pass through flange
The mounting hole 7 in face so that bellows expansion joint 3 can be connected with the more pull bars 1, by described in another end plate 4 and more
The other end connection of pull bar 1, places the seal 5, and lock by the locking member 2 between flange face and the end plate 4
The tight bellows expansion joint 3 so that the flange face and the end plate 4 can be brought into close contact, and realize the effect of sealing, and will
The through hole 41 of two end plates 4 is connected with test device respectively, wherein the through hole 41 of an end plate 4 is air admission hole, separately
The through hole 41 of one end plate 4 is venthole, and then can place the whole device connected in water, is realized to bellows
The sealing test of expansion joint 3, during experiment, the sealing property of bellows expansion joint 3 can be observed well, and to bellows
Expansion joint 3 plays a part of protection.
In another embodiment, the both ends of the surface of bellows expansion joint 3 do not set flange face, are common anchor ring, will
One end of more pull bars 1 is connected with an end plate 4, and bellows expansion joint 3 is placed on the ring formed with the more pull bars 1
It is interior, make the axial line of bellows expansion joint 3 parallel with the more pull bars 1, and will in the end plate 4 and bellows expansion joint 3
It is close to place the seal 5 between the anchor ring of connection, the other end of another end plate 4 and the more pull bars 1 is connected
Connect, the seal 5 is placed between anchor ring and the end plate 4, and the bellows expansion is locked by the locking member 2
Section 3 so that the anchor ring and the end plate 4 can be brought into close contact connection, realize the effect of sealing, and by the institute of two end plates 4
Through hole 41 is stated to be connected with test device respectively, wherein the through hole 41 of an end plate 4 is air admission hole, another end plate 4
The through hole 41 be venthole, and then can by the whole device connected place water in, realize to the close of bellows expansion joint 3
Envelope test, during experiment, can observe the sealing property of bellows expansion joint 3 well, and bellows expansion joint 3 is played
The effect of protection.
According to a particular embodiment of the invention, as shown in figure 3, the first end plate, second end plate and the sealing
The binding face of part is provided with cascade groove, and the through hole of the end plate is arranged in the middle part of the groove, is easy to same detection dress
Put the bellows expansion joint for being applicable to different-diameter.Certainly, there is no particular restriction for the concrete structure of end plate of the invention, ladder
Type groove is designed as the preferred of some embodiments of the invention, for example, in wherein a kind of embodiment, bellows is swollen
The joint face of swollen section 3 is the joint face of common ring-type, and one end of bellows expansion joint 3 is placed on and bellows expansion joint 3
On the ladder platform that external diameter matches, and the institute corresponding with the joint face of bellows expansion joint 3 is placed on ladder platform
Seal 5 is stated, the effect of sealing is realized with this；In another embodiment, if the joint face of the bellows expansion joint 3 is
The end face to match with the end plate 4, then directly the bellows expansion joint 3 can be brought into close contact with the end plate 4 and be connected.
According to a particular embodiment of the invention, Fig. 4 is the intermediate plate schematic diagram of the present invention, and Fig. 5 is intermediate plate of the present invention
Sectional view, as shown in Figure 4 and Figure 5, include the intermediate plate 6 of the bellows expansion joint 3 of the different sections of connection, in the intermediate plate 6
Portion is communicated with hole 61, and intermediate plate both sides joint face is symmetrically arranged with cascade groove, and the intercommunicating pore of the intermediate plate is set
It is placed in the middle part of the intermediate plate cascade groove, it is mutually corresponding between the mounting hole 7 that the end plate is provided with the intermediate plate,
The end plate, the intermediate plate are detachably fixed with the pull bar and are connected, and the intermediate plate 6 and the bellows expansion joint 3 connect
Seal 5 is provided between junction, adds the intermediate plate 6, and be provided with different section bellows expansion joints 3 in the intermediate plate 6
The intercommunicating pore 61 of connection so that sealing property experiment can be carried out to more piece bellows expansion joint 3 simultaneously, in order to ensure experimentation
Sealing property, be additionally provided with the seal 5 between the intermediate plate 6 and bellows expansion joint 3, the intermediate plate 6 with it is described
Pull bar 1 can use the foregoing end plate 4 and the identical connected mode of pull bar 1 or the intermediate plate 6 only with it is described
The both ends of the surface of bellows expansion joint 3 are close to connect.
For example, in wherein a kind of embodiment, the intermediate plate 6 is consistent with the shape size of the end plate 4, in described
Between be provided with the intercommunicating pore 61 connected with two bellows expansion joints 3 among plate 6, the internal diameter of the intercommunicating pore is less than or equal to
The internal diameter of the joint face of bellows expansion joint 3, connected mode and the end plate 4 and institute of the intermediate plate 6 with the pull bar 1
It is identical to state the connected mode of pull bar 1, the seal is provided between the intermediate plate 6 and adjacent two bellows expansion joints joint face
5, ensure the sealing of connection.
In another embodiment, as shown in Figure 4 and Figure 5, the intermediate plate 6 is an annular plate, and the centre
The external diameter of plate 6 is less than the internal diameter for the annulus that the pull bar 1 is formed, and outer more than or equal to the joint face of bellows expansion joint 3
Footpath, the intercommunicating pore 61 are arranged on the middle part of the intermediate plate 6, and the internal diameter of the intercommunicating pore is less than or equal to the bellows expansion
The internal diameter of 3 joint faces is saved, the intermediate plate 6 is placed between adjacent two joint face of bellows expansion joint 3, and connected mode is
Connection is brought into close contact, and seal 5 is provided between the bellows expansion joint 3 and the intermediate plate 6 are brought into close contact joint face,
With the sealing property during guarantee test.
According to a particular embodiment of the invention, as shown in Figure 4 and Figure 5, the middle part of the intermediate plate 6 be provided with it is described stepped
The corresponding stepped through hole 61 of groove 43 so that when more piece bellows expansion joint 3 is tested, often save ripple
Pipe expansion joint 3 can find the ladder platform corresponding with its end face, and internal diameter and external diameter are placed on ladder platform and rank
The mutually corresponding seal of terraced landing inner diameter and external diameter so that when connection, there is better seal, meet more piece
The demand that bellows expansion joint 3 is tested.
According to a particular embodiment of the invention, as shown in Figures 2 and 3, two end plates 4 are provided with phase with the intermediate plate 6
The corresponding mounting hole 7 for being easy to the pull bar 1 to pass through, the end plate 4, the intermediate plate 6 and the company of being detachably fixed of pull bar 1
Connect, in wherein a kind of embodiment, the mounting hole 7 is easy to be positioned pull bar 1, the end plate 4 and the intermediate plate 6
Connection, pull bar 1 and the end plate 4 connect it is more stable, detachable connection allow pull bar 1 and the end plate 4 with
Tear open, i.e., can is installed when needing, and is completed easy to disassemble, facilitates experimental rig to carry, and has been also convenient for experiment
Device recycles.In another embodiment, as it was previously stated, the external diameter in the intermediate plate 6 surrounds less than the pull bar
Ring external diameter when, the intermediate plate 6 can not have to set the mounting hole 7.
According to a particular embodiment of the invention, two end plates 4 and the intermediate plate 6 are flanged plate, are installed for convenience
And coordinating progress seal tightness test with the bellows expansion joint of polymorphic type, the end plate 4 and the intermediate plate 6 are arranged to method
Orchid, flange are provided with mounting hole 7 described above, are easy to the end plate 4 and the intermediate plate 6 being connected with the pull bar 1.
According to a particular embodiment of the invention, the seal 5 is O-ring seal, close in experimentation in order to ensure
Sealing property, using the sealing ring of annular, sealing ring is provided with plurality of specifications, and being easy to coordinate sealing ring with foregoing ladder platform makes
With that is, when in use, the internal diameter and external diameter of ladder platform are equal with internal diameter and the external diameter difference of sealing ring, i.e., ladder platform is interior
Footpath and external diameter are equal with internal diameter and the external diameter difference of seal 5, or the internal diameter of the seal 5 is more than the interior of ladder platform
Footpath, the external diameter of the seal 5 are less than the external diameter of ladder platform.
In other embodiments, the internal diameter of the seal 5 and external diameter can also be with the companies of the bellows expansion joint 3
Internal diameter and the external diameter difference of junction are equal；Or the internal diameter of the seal 5 is more than the joint face of the bellows expansion joint 3
Internal diameter, the external diameter of the seal 5 are less than the external diameter of the joint face of the bellows expansion joint 3.
According to a particular embodiment of the invention, the pull bar 1 is threaded rod, and the locking member 2 is nut, the pull bar 1
It is fastenedly connected with the screw-type of locking member 2 so that dismounting more simple and fast, and can also ensure that locking member 2 locks institute simultaneously
The dynamics of end plate 4 and bellows expansion joint 3 is stated, further adds the close of end plate 4 and bellows expansion joint 3 junction
Feng Xing, while the pull bar 1 of screw-type and the locking member 2 are easily found replacing part in damage, avoid in the drawing
The situation that bar 1 and the locking member 2 can not be tested in damage.
According to a particular embodiment of the invention, the through hole that the first end plate is set is air admission hole, and second end plate is set
The through hole put is venthole, and two through hole of the test device respectively with the end plate is connected, it should be noted that of the invention
End plate, intermediate plate, seal, there is no particular restriction for the specifically chosen mode of locking member and pull bar.
According to another aspect of the present invention, it is including following the invention provides a kind of method of bellows expansion joint detection
Step：
1) more pull bars are arranged to the mounting hole of first end plate, and are fixed on first end plate and seal with locking member
One end of bellows expansion joint；
2) mounting hole of the second end plate is passed through into more pull bars, and be fixed on the second end plate and seal by locking member
The other end of bellows expansion joint；
3) by the mounting hole of intermediate plate with being connected with pull bar more, and continue to connect the in the way of step 1), step 2)
Two section bellows expansion joints；
4) detection means is connected with the air admission hole and venthole of a section or more piece bellows expansion joint both ends, to bellows
Expansion joint is detected.
Bellows expansion joint detection means of the invention can be to the bellows expansion joint provided with flange connection surface in summary
Experiment of the bellows expansion joint realization of flange connection surface to its sealing is not set, and experimental rig is simple in construction, installation
Convenient disassembly, and experimental rig and bellows expansion joint are put into water simultaneously, are easy to the test to sealing；Realize simultaneously to more
The test of individual bellows expansion joint sealing, end plate, intermediate plate are provided with stair-stepping groove, and same detection means is applicable to
The bellows expansion joint of different-diameter, while cooperated with seal, add sealing.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be any
Combined in an appropriate manner in individual or multiple embodiments or example.In addition, in the case of not conflicting, the technology of this area
Different embodiments or example and the feature of different embodiments or example described in this specification can be combined by personnel
And combination.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification, meanwhile, for those of ordinary skill in the art, the think of according to the application
Think, in specific embodiments and applications there will be changes.
Claims (10)
- A kind of 1. bellows expansion joint detection means, it is characterised in that including：Test device, locking member, pull bar, end plate and close Sealing, wherein,The end plate includes first end plate and the second end plate, and the first end plate and the second end plate outer circumferential edges are provided with Multiple mounting holes, medium position are provided with through hole；The locking member is arranged on the pull bar, for the first end plate and second end plate to be anchored on into the ripple Pipe expansion joint both ends, the first end plate, second end plate and the bellows expansion internode are provided with seal, the drawing Bar is disposed through in the mounting hole of the first end plate and the second end plate；Two through hole of the test device respectively with the end plate is connected.
- 2. bellows expansion joint detection means according to claim 1, it is characterised in that the first end plate, described The binding face of two end plates and the seal is provided with cascade groove, and the through hole of the end plate is arranged in the middle part of the groove.
- 3. bellows expansion joint detection means according to claim 1, it is characterised in that also include the ripple for connecting different sections The intermediate plate of line pipe expansion joint, the intermediate plate middle part are communicated with hole, the intermediate plate and the bellows expansion joint both ends Between be provided with seal.
- 4. bellows expansion joint detection means according to claim 3, it is characterised in that intermediate plate both sides joint face Cascade groove is symmetrically arranged with, the intercommunicating pore of the intermediate plate is arranged in the middle part of the intermediate plate cascade groove.
- 5. bellows expansion joint detection means according to claim 3, it is characterised in that the end plate and the intermediate plate Mutually corresponding between the mounting hole being provided with, the end plate, the intermediate plate are detachably fixed with the pull bar and are connected.
- 6. bellows expansion joint detection means according to claim 3, it is characterised in that the end plate and the intermediate plate For flanged plate.
- 7. bellows expansion joint detection means according to claim 1, it is characterised in that the seal is ring packing Circle.
- 8. bellows expansion joint detection means according to claim 1, it is characterised in that the pull bar is threaded rod, institute It is nut to state locking member.
- 9. bellows expansion joint detection means according to claim 1, it is characterised in that the first end plate is set logical Hole is air admission hole, and the through hole that second end plate is set is venthole.
- 10. a kind of method that detection means using described in claim any one of 1-9 carries out bellows expansion joint detection, it is special Sign is, comprises the following steps：1) more pull bars are arranged to the mounting hole of first end plate, and first end plate and seal are fixed on ripple with locking member One end of pipe expansion joint；2) mounting hole of the second end plate is passed through into more pull bars, and the second end plate and seal is fixed on by ripple by locking member The other end of pipe expansion joint；3) by the mounting hole of intermediate plate with being connected with pull bar more, and continue to connect the second section in the way of step 1), step 2) Bellows expansion joint；4) detection means is connected with the air admission hole and venthole of a section or more piece bellows expansion joint both ends, to bellows expansion Section is detected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710684485.4A CN107461563A (en) | 2017-08-11 | 2017-08-11 | A kind of bellows expansion joint detection means and method |
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| CN201710684485.4A CN107461563A (en) | 2017-08-11 | 2017-08-11 | A kind of bellows expansion joint detection means and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542607A (en) * | 2019-10-17 | 2019-12-06 | 无锡市创新低温环模设备科技有限公司 | Bellows pressure test frock |
| CN110595876A (en) * | 2019-10-19 | 2019-12-20 | 沈阳仪表科学研究院有限公司 | Metal corrugated pipe expansion joint pressure resistance test device and test method for falling film pipe |
| CN112082036A (en) * | 2020-10-30 | 2020-12-15 | 山东钢铁股份有限公司 | Online covering maintenance method for open type glasses valve corrugated pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542607A (en) * | 2019-10-17 | 2019-12-06 | 无锡市创新低温环模设备科技有限公司 | Bellows pressure test frock |
| CN110595876A (en) * | 2019-10-19 | 2019-12-20 | 沈阳仪表科学研究院有限公司 | Metal corrugated pipe expansion joint pressure resistance test device and test method for falling film pipe |
| CN112082036A (en) * | 2020-10-30 | 2020-12-15 | 山东钢铁股份有限公司 | Online covering maintenance method for open type glasses valve corrugated pipe |
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