CN208043363U - A kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak - Google Patents
A kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak Download PDFInfo
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- CN208043363U CN208043363U CN201820616765.1U CN201820616765U CN208043363U CN 208043363 U CN208043363 U CN 208043363U CN 201820616765 U CN201820616765 U CN 201820616765U CN 208043363 U CN208043363 U CN 208043363U
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- cover body
- sealing joint
- joint strip
- vacuum
- card slot
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Abstract
The utility model discloses a kind of vacuum (-tight) housings for the detection of nuclear power station vacuum leak, including cover body, pressure gauge connection, bleeding point and air inlet are had on the side wall of cover body, two opposite sides of cover body open, glass cover-plate is equipped on the open end end face of cover body, its profile is equipped with card slot in another open end upper edge of cover body；Groove is provided on the madial wall and lateral wall of sealing joint strip, the upper surface of sealing joint strip projects upwards to form arc surface, and the lower part of sealing joint strip is placed in the horizontal segment of card slot, and the top of sealing joint strip protrudes from the vertical section upper end of card slot.Fully the gap between weld seam and cover body can be filled by the deformation on sealing joint strip top, especially when the case where part protrusion occurs in commissure, sealing joint strip upper surface can be fully wrapped around by the protrusion, and then ensures the leakproofness inside cover body.
Description
Technical field
The utility model is related to nuclear power station leak detection fields, and in particular to a kind of to be used for what nuclear power station vacuum leak detected
Vacuum (-tight) housing.
Background technology
Vacuum leak detection technique is nuclear equipment design, builds, a kind of non-destructive testing particularly important in development and operation
Method.Domestic each seat, which is in, to be built and running nuclear power station, as long as applying to vacuum leak detection (bubble method) method
When, either during the construction phase of nuclear power station, preservice inspection and inservice inspection, each unit for being engaged in non-destructive testing work is equal
It need to use and arrive vacuum (-tight) housing detection device device.
The vacuum (-tight) housing type that current nondestructive detector material supplier is sold mainly has two kinds of plastic cement, cast iron forms to make
Vacuum (-tight) housing.There are following unfavorable application limitations：
1, there are viscose or the poor sealing performances of screw hole connecting portion for the vacuum (-tight) housing of plastic cement material, and using when need to establish
Higher vacuum degree easily makes cover body or rubber pad be damaged and deform under stress, is unfavorable for keeping vacuum degree needed for detection
The shortcomings of；
2, the vacuum (-tight) housing of cast iron quality there are equipment weight, form observation it is unintelligible, be not easy to high-altitude application with carry, and examine
Survey is difficult to quickly establish required vacuum degree when standing to weld seam position, and the labour for increasing job safety hidden danger and operating personnel is strong
Degree reduces the drawbacks such as effect；
3, it is provided in view of nuclear power station normative reference, stainless steel weld seam need to prevent to want with being in direct contact for heterogeneous material
It asks, thus cannot be used for the weld seam detection of stainless steel, be only used for the weld inspection of carbon steel material.The stainless steel of nuclear power station
Clad can pond is to need to be applied to the most welding position of vacuum leak detection method, the vacuum (-tight) housing of above two material type,
There are the application limitation situations that field of employment is limited.
Utility model content
The utility model aim is to provide a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak, solves vacuum (-tight) housing and go out
Existing blow-by, the solid that is pasted not strongly at sealing strip fall off, it is difficult to the problem of effectively establishing and keeping the vacuum degree needed for detection.
The utility model is achieved through the following technical solutions：
A kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak includes the cover body of rectangle, on the side wall of the cover body
Pressure gauge connection, bleeding point and air inlet are had, two opposite sides of the cover body open, and at one of cover body
Open end end face is equipped with glass cover-plate, and in another open end upper edge of cover body, its profile is equipped with the card slot that section is T-type；Also
Include the sealing joint strip to match with card slot, groove is provided on the madial wall and lateral wall of the sealing joint strip, it is described close
The upper surface of seal strip projects upwards to form arc surface, and the lower part of the sealing joint strip is placed in the horizontal segment of card slot, fluid sealant
The top of item protrudes from the vertical section upper end of card slot, and the width of the groove is H, and the length of the card slot vertical section is L, and full
Sufficient L < H < 1.5L.It is easy shape for poor sealing performance, vacuum cover body existing for existing nuclear power station leak detection vacuum (-tight) housing
Become impaired problem, applicant carries out existing vacuum (-tight) housing certain improvement, i.e., two opposite in two cover bodies open ends
A upper setting glass cover-plate in face, another opens the card slot for opening up that section is T-type on end face, and card slot is along cover body end face
Profile open up, the shape of base card slot is similar to the shape of cover body, differs only in size difference, and is set on card slot
There is sealing joint strip with matching, the sealing element between weld seam and cover body when the top of the sealing joint strip is as detection,
Since card slot is horizontal segment filling by the lower part of sealing joint strip so that the top of sealing joint strip is no longer needed to when in use using glutinous
Glue, and be arc-shaped since the upper surface on sealing joint strip top protrudes outward, and the recess width of sealing joint strip is perpendicular more than card slot
The length of straight section so that when forming vacuum environment in cover body, sealing joint strip can realize that two-stage is buffered when being squeezed, and be located at
Sealing joint strip in card slot vertical section locally will produce deformation first, until the opening end face of cover body directly with sealing joint strip top
Bottom surface contact, i.e. first-level buffer, and sealing joint strip top is after the extruding of cover body by can deform upon, sealing joint strip top
Upper surface can be become plane, i.e. secondary buffering from arc surface, by level 2 buffering, effectively sealing joint strip can be avoided to be stressed
Damage；And can fully be filled the gap between weld seam and cover body by the deformation on sealing joint strip top, especially welding
When occurring the case where part protrusion at seam, sealing joint strip upper surface can be fully wrapped around by the protrusion, and then ensures cover body
Internal leakproofness.
Further, the lower part of sealing joint strip is placed in the horizontal segment of card slot, and the top of sealing joint strip protrudes from card slot
The width of vertical section upper end, the groove is H, and the length of the card slot vertical section is L, and meets L < H < 1.5L, in use,
Between existing between the madial wall and cover body end face of original state lower groove or between groove madial wall and the horizontal segment of card slot
Gap can not only ensure that sealing joint strip has certain deformation space when being squeezed, moreover it is possible to facilitate sealing joint strip multiple
Quick-replaceable after use.
It is additionally provided with LED light strip on the madial wall of the cover body.Further, the intensity of illumination around weld seam is relatively low
When, staff can not timely and effectively observe the leakage point of weld seam in the leak detection of weld seam, and therefore, applicant exists
LED light strip is set on the madial wall of cover body, and the LED light strip uses cold light source, it is strong in the illumination for providing standard for staff
While spending, moreover it is possible to the effective opportunity for observing staff weld leakage situation be avoided to interfere.And use width for
The insulation light bar of 10mm or so in order to be pasted and fixed, and is considered Electrical Safety when personnel operate vacuum (-tight) housing, is adopted
It uses 5# accumulators as the startup power supply of light bar, the illuminance using illumination photometer test secondary light source is needed in research process, it must
500Lx must be greater than or equal to, to meet prescribed requirement of the standard to detection ambient light.
The cover body uses stainless steel.In view of nuclear power station normative reference provide, stainless steel weld seam need to prevent with
Heterogeneous material is in direct contact requirement, and the vacuum (-tight) housing of existing cast iron quality is not used to the weld seam detection of stainless steel, only
It can be used for the weld inspection of carbon steel material, therefore, preferably, cover body uses stainless steel, to meet nuclear power station Leak-tight liner
With examination criteria of the stainless steel clad can pond weld seam in leak detection.
The handle of U-shaped is equipped on the lateral wall of the cover body.Further, it is additionally provided with U-shaped on the lateral wall of cover body
Handle, stable support carries out cover body with ancillary staff.
The utility model compared with prior art, has the following advantages and advantages：
1, a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak of the utility model can be effective by level 2 buffering
Sealing joint strip is avoided to be stressed damage；And it can fully will be between weld seam and cover body by the deformation on sealing joint strip top
Gap is filled, and especially when the case where part protrusion occurs in commissure, sealing joint strip upper surface can be complete by the protrusion
Full package, and then ensure the leakproofness inside cover body；
2, a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak of the utility model, in use, original state lower groove
Madial wall and cover body end face between or groove madial wall and the horizontal segment of card slot between there are gaps, can not only ensure
Sealing joint strip has certain deformation space when being squeezed, moreover it is possible to facilitate sealing joint strip after a number of uses quickly more
It changes；
3, a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak of the utility model, is arranged on the madial wall of cover body
LED light strip, and the LED light strip uses cold light source, while the intensity of illumination of standard is provided for staff, moreover it is possible to avoid pair
Effective opportunity that staff observes weld leakage situation interferes.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sectional view of sealing joint strip；
Fig. 3 is the cooperation figure of sealing joint strip and card slot；
Fig. 4 is the inner corner trim cover body structural schematic diagram of 90 ° of welding external corner parts；
Fig. 5 is the external corner cover body structural schematic diagram of 90 ° of welding internal corner parts.
Label and corresponding parts title in attached drawing：
1- cover bodies, 2- card slots, 3- glass cover-plates, 4- light bar, 5- pressure gauge connections, 6- bleeding points, 7- handles, 8- air inlets
Mouth, 9- sealing joint strips, 10- grooves, 11- arc surfaces.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figures 1 to 3, the present embodiment includes the cover body 1 of rectangle, and pressure is had on the side wall of the cover body 1
Table interface 5, bleeding point 6 and air inlet 8, two opposite sides of the cover body 1 open, and in an open end of cover body 1
End face is equipped with glass cover-plate 3, and in another open end upper edge of cover body 1, its profile is equipped with the card slot 2 that section is T-type；Also wrap
The sealing joint strip 9 to match with card slot 2 is included, groove 10 is provided on the madial wall and lateral wall of the sealing joint strip 9, it is described
The upper surface of sealing joint strip 9 projects upwards to form arc surface 11, and the lower part of the sealing joint strip 9 is placed in the horizontal segment of card slot 2,
The top of sealing joint strip 9 protrudes from the vertical section upper end of card slot 2, and the width of the groove 10 is H, 2 vertical section of the card slot
Length is L, and meets L < H < 1.5L.Pressure gauge is installed, bleeding point 6 is connect with vacuum pump, and in air inlet on pressure gauge connection 5
Controlled valve is set on mouth 8, in use, controlled valve is closed, vacuum pump is opened, to realize the vacuum environment inside cover body 1.
A upper setting glass cover-plate 3 of the present embodiment in two opposite open end faces of two cover bodies 1, another is opened
The card slot 2 for opening up that section is T-type on end face is put, and profile of the card slot 2 along 1 end face of cover body opens up, the shape and cover body of base card slot 2
1 shape is similar, differs only in size difference, and sealing joint strip 9 with matching is equipped on card slot 2, should
The sealing element between weld seam and cover body 1 when the top of sealing joint strip 9 is as detection, since the lower part of sealing joint strip 9 will block
Slot 2 is horizontal segment filling so that the top of sealing joint strip 9 no longer needs to use viscose when in use, and due to 9 top of sealing joint strip
Upper surface protrude outward and be arc-shaped, and 10 width of groove of sealing joint strip 9 is more than the length of 2 vertical section of card slot so that
When forming vacuum environment in cover body 1, sealing joint strip 9 can realize that two-stage is buffered when being squeezed, and be located in 2 vertical section of card slot
9 part of sealing joint strip will produce deformation first, until the opening end face of cover body 1 is directly contacted with the bottom surface on 9 top of sealing joint strip,
That is first-level buffer, and 9 top of sealing joint strip is after the extruding of cover body 1 by can deform upon, the upper surface meeting on 9 top of sealing joint strip
Plane, i.e. secondary buffering are become from arc surface 11, by level 2 buffering, can effectively avoid sealing joint strip 9 from being stressed damage；
And can fully be filled the gap between weld seam and cover body 1 by the deformation on 9 top of sealing joint strip, especially in commissure
When there is the case where part protrusion, 9 upper surface of sealing joint strip can be fully wrapped around by the protrusion, and then ensures in cover body 1
Effectively required vacuum degree quickly can be established and be kept to the leakproofness in portion that is, for the contact surface of different roughness.
Further, the lower part of sealing joint strip 9 is placed in the horizontal segment of card slot 2, and the top of sealing joint strip 9 protrudes from card slot
The width of 2 vertical section upper end, the groove 10 is H, and the length of 2 vertical section of the card slot is L, and meets L < H < 1.5L,
In use, between 1 end face of madial wall and cover body of original state lower groove 10 or the level of groove 10 madial wall and card slot 2
There are gap between section, it can not only ensure that sealing joint strip 9 has certain deformation space when being squeezed, moreover it is possible to facilitate close
The quick-replaceable of seal strip 9 after a number of uses.
In the present embodiment, as shown in Figure 4 and Figure 5, in the part for 90 ° of different weldings, that is, external corner is welded
Position and welding internal corner part；Fig. 4 is 1 structural schematic diagram of inner corner trim cover body of 90 ° of welding external corner parts, corresponding detection welding
External corner part, Fig. 5 are 1 structural schematic diagram of cover body of 90 ° of welding internal corner parts, corresponding detection welding internal corner part, i.e., logical
Cross the change to 1 body structure of cover body, the shape correspondence of sealing joint strip 9 and card slot 2 changes, and making for vacuum (-tight) housing can be improved
With range, reduce the cost of weld seam detection.
Embodiment 2
As shown in Figures 1 to 3, LED light strip 4 is additionally provided on the madial wall of the cover body 1.Further, around weld seam
Intensity of illumination it is relatively low when, staff can not timely and effectively observe the leakage point of weld seam in the leak detection of weld seam
Position, therefore, applicant be arrangeds LED light strip 4 on the madial wall of cover body 1, and the LED light strip 4 is using cold light source, for work people
While member provides the intensity of illumination of standard, moreover it is possible to the effective opportunity for observing staff weld leakage situation be avoided to cause to do
It disturbs.And use width for the insulation light bar 4 of 10mm or so, in order to be pasted and fixed, and in view of personnel's operation is true
Electrical Safety when sky cover, the startup power supply using 5# accumulators as light bar 4 need to test using illumination photometer in research process
The illuminance of secondary light source, it is necessary to be greater than or equal to 500Lx, to meet prescribed requirement of the standard to detection ambient light.
Further, it is additionally provided with the handle 7 of U-shaped on the lateral wall of cover body 1, cover body 1 is carried out with ancillary staff
Stable support.
Preferably, cover body 1 uses stainless steel, existed with meeting nuclear power station Leak-tight liner and stainless steel clad can pond weld seam
Examination criteria when leak detection.
Above-described specific implementation mode, to the purpose of this utility model, technical solution and advantageous effect carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak includes the cover body (1) of rectangle, the side in the cover body (1)
Pressure gauge connection (5), bleeding point (6) and air inlet (8) are had on wall, it is characterised in that：The cover body (1) is opposite
Two sides open, and glass cover-plate (3) is equipped on the open end end face of cover body (1), another in cover body (1) is opened
Its profile of end upper edge is put equipped with the card slot (2) that section is T-type；Further include the sealing joint strip (9) to match with card slot (2), in institute
It states and is provided with groove (10) on the madial wall and lateral wall of sealing joint strip (9), the upper surface of the sealing joint strip (9) projects upwards
Arc surface (11) is formed, the lower part of the sealing joint strip (9) is placed in the horizontal segment of card slot (2), and the top of sealing joint strip (9) is prominent
For the vertical section upper end of card slot (2), the width of the groove (10) is H, and the length of card slot (2) vertical section is L, and full
Sufficient L < H < 1.5L.
2. a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak according to claim 1, it is characterised in that：Described
LED light strip (4) is additionally provided on the madial wall of cover body (1).
3. a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak according to claim 1, it is characterised in that：The cover
Body (1) uses stainless steel.
4. a kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak according to claim 1, it is characterised in that：Described
The lateral wall of cover body (1) is equipped with the handle (7) of U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820616765.1U CN208043363U (en) | 2018-04-26 | 2018-04-26 | A kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820616765.1U CN208043363U (en) | 2018-04-26 | 2018-04-26 | A kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208043363U true CN208043363U (en) | 2018-11-02 |
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ID=63928470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820616765.1U Active CN208043363U (en) | 2018-04-26 | 2018-04-26 | A kind of vacuum (-tight) housing for the detection of nuclear power station vacuum leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208043363U (en) |
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2018
- 2018-04-26 CN CN201820616765.1U patent/CN208043363U/en active Active
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