CN206945231U - A kind of sealing device for water pressure test - Google Patents
A kind of sealing device for water pressure test Download PDFInfo
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- CN206945231U CN206945231U CN201720922423.8U CN201720922423U CN206945231U CN 206945231 U CN206945231 U CN 206945231U CN 201720922423 U CN201720922423 U CN 201720922423U CN 206945231 U CN206945231 U CN 206945231U
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- water pressure
- pressure test
- sealing device
- sealing
- annular groove
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Abstract
The utility model discloses a kind of sealing device for water pressure test, the device includes sealing plate (1), seal (2), sleeve pipe (3), pipe joint (4) and fastener (5)；Wherein, the seal (2) is arranged on sealing plate (1), described sleeve pipe (3) one end is connected with sealing plate (1), the other end is connected with pipe joint (2), and the fastener (5) is used for lock sealing plate (1) and water pressure test workpiece.The utility model is simple in construction, easy to operate, and versatility and repeatability are strong, using sealing device for water pressure test of the present utility model, can realize the single cell water pressure test.
Description
Technical field
The utility model is related to pressure vessel expanded joint quality detection device, and in particular to a kind of sealing device for water pressure test and
Method.
Background technology
Application of the tube-sheet heat exchanger in petrochemical industry, thermoelectricity and nuclear power plant is very extensive, wherein, exchanger tubes and tubesheets
Connection be one of main process in production, the failure mode of most of heat exchangers is all to show that exchanger tubes and tubesheets connect
Connect the breakage at place.
Exchanger tubes and tubesheets are mainly linked together by the form of expanded joint, and its general principle is sent out for exchanger tubes and tubesheets
Raw different degrees of radial deformation, the connection with tubesheet holes is realized by the difference of deformation-recovery amount.After expanded joint, it is necessary to enter
The row water pressure test, to check the tightness of expanded joint.At present, the heat exchanger for carrying out pipe-pipe sheet whole process Hydraulic expansion-jointing requires to press more
Expanding joint process evaluation is carried out according to RCC-MF4400, wherein, intermittence leakage test is one of evaluation project that must be done.
In modern detecting, intermittence leakage test is mainly in tube sheet secondary side welded seal cover, for bearing
Intermittence leakage test hydraulic pressure pressure.But such a test method has following drawback：
1) leaked in hydraulic pressure test specimen if any a heat exchanger tube, pressure release will occur, experiment stops；
2) every piece of water pressure test test specimen can only carry out a kind of expanded joint experiment of expanded joint parameter；
3) heat caused by welded seal cover caused by expansion joint on influenceing to be difficult to judge；
4) seal closure is difficult to reuse, and wastes sheet material, wlding and man-hour.
Therefore, it is current to design a kind of sealing device for water pressure test simple in construction, easy to operate and may be reused
Urgent problem to be solved.
Utility model content
In order to overcome above mentioned problem, present inventor has performed studying with keen determination, a kind of sealing device for water pressure test is designed, should
Device includes sealing plate, seal, sleeve pipe, pipe joint and fastener, wherein, described device is simple in construction, easy to operate, general
Property and it is practical, it is possible to achieve the inspection of single cell and the expanded joint experiment for carrying out multigroup expanded joint parameter.
Specifically, the purpose of this utility model is to provide following aspect：
(1) a kind of, sealing device for water pressure test, including sealing plate 1, seal 2, sleeve pipe 3, pipe joint 4 and fastener 5,
Wherein, annular groove 11 and through hole 12 are offered on the sealing plate 1,
The annular groove 11 is located at the center of sealing plate 1, and the through hole 12 is evenly distributed in around annular groove 11,
The seal 2 is arranged in annular groove 11,
The one end of described sleeve pipe 3 is connected with sealing plate 1, and the other end is connected with pipe joint 4.
(2), the sealing device for water pressure test according to above-mentioned (1), wherein, the annular groove 11 is described logical with 1
Hole 12 has more than 2.
(3), the sealing device for water pressure test according to above-mentioned (1), wherein, the depth and seal of the annular groove 11
2 thickness ratio is (0.2~0.8)：1.
(4), the sealing device for water pressure test according to above-mentioned (3), wherein, the depth and seal of the annular groove 11
2 thickness ratio is 0.5：1.
(5), the sealing device for water pressure test according to above-mentioned (1), wherein, the seal 2 is O-ring seals.
(6), the sealing device for water pressure test according to above-mentioned (1), wherein, the internal diameter of described sleeve pipe 3 is more than heat exchanger tube 7
External diameter.
(7), the sealing device for water pressure test according to above-mentioned (1), it is characterised in that be provided with the pipe joint 4
Vertical screwed hole 41 and horizontal screwed hole 42.
(8), the sealing device for water pressure test according to above-mentioned (7), wherein,
The vertical screwed hole 41 is connected through a screw thread with water pressure gauge 6；
The horizontal screwed hole 42 is through hole, and described horizontal one end of screwed hole 42 is connected with sleeve pipe 3, and the other end is with suppressing equipment company
Connect.
(9), the sealing device for water pressure test according to above-mentioned (8), wherein, the vertical screwed hole 41 and water pressure gauge 6 it
Between gasket seal 8 is installed.
(10), the sealing device for water pressure test according to above-mentioned (1), wherein, the fastener 5 includes screw rod 51, gear
Plate 52, pressing plate 53 and nut 54,
One end of the screw rod 51 sequentially passes through the side of the through hole 12 and tube sheet 9 on sealing plate 1, in the another of tube sheet 9
Side is connected with pressing plate 53 and nut 54 so that sealing plate 1 is fitted tightly over the side of tube sheet 9.
Beneficial effect includes possessed by the utility model：
(1) sealing device for water pressure test provided by the utility model, simple in construction, easy to operate, versatility and repeatable
Property is strong；
(2) pressure vessel expanded joint leak detection is carried out using sealing device for water pressure test provided by the utility model, it is possible to achieve
The inspection of single cell, and the expanded joint experiment of multigroup expanded joint parameter can be carried out, improve accuracy of detection；
(3) sealing device for water pressure test provided by the utility model, without welded seal cover, welding heat is avoided to swollen
The influence of joint, while man-hour is effectively shortened, experimentation cost is reduced, and related process can be determined according to testing result
Parameter.
Brief description of the drawings
Fig. 1 shows the structure chart of sealing device for water pressure test in the utility model；
Fig. 2 shows Fig. 1 A-A views.
Drawing reference numeral explanation：
1- sealing plates；
11- annular grooves；
12- through holes；
2- seals；
3- sleeve pipes；
4- pipe joints；
41- indulges screwed hole；
The horizontal screwed holes of 42-；
5- fasteners；
51- screw rods；
52- baffle plates；
53- pressing plates；
54- nuts；
6- water pressure gauges；
7- heat exchanger tubes；
8- gasket seals；
9- tube sheets.
Embodiment
The utility model is further described below by drawings and embodiments.Pass through these explanations, this practicality
The characteristics of new and advantage will become more apparent from clearly.Wherein, although the various aspects of embodiment are shown in the drawings,
But unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
According to the utility model, there is provided a kind of sealing device for water pressure test, as shown in figure 1, the device include sealing plate 1,
Seal 2, sleeve pipe 3, pipe joint 4 and fastener 5, wherein, the seal 2 is arranged on sealing plate 1, the one end of described sleeve pipe 3
It is connected with sealing plate 1, the other end is connected with pipe joint 2, and the fastener 5 is used between sealing plate 1 and water pressure test workpiece
Fixed locking.
In the utility model, the heat exchanger tube of the heat exchanger tube, the not real meaning in nuclear equipment steam generator, and
It is a kind of water pressure test workpiece, to the heat exchanger tube in model steam generator.
According to a kind of preferred embodiment of the utility model, as depicted in figs. 1 and 2, ring is offered on the sealing plate 4
Shape groove 11 and through hole 12,
Preferably, the annular groove 11 has 1, and the through hole 12 has more than 2.
In embodiment still more preferably, the annular groove 11 is located at the center of sealing plate 1, and the through hole 12 is equal
It is distributed in evenly around annular groove 11.
According to a kind of preferred embodiment of the utility model, the seal 2 is arranged in annular groove 41.
In further preferred embodiment, the thickness ratio of the groove depth and seal 2 of the annular groove 11 is
(0.2~0.8)：1, be preferably (0.3~0.6)：1, such as 0.5：1.
Wherein, the fluting size of the annular groove 11 is depending on heat exchanger tube specification and seal specification, the annular groove
11 internal diameter is slightly larger than the external diameter of heat exchanger tube 7, because sealing device for water pressure test of the present utility model in use, changes
Heat pipe 7 needs guiding through annular groove 11, and seal 2 coordinates on annular groove, the sealing of realization device and heat exchanger tube.
Mode is preferably carried out according to the utility model one kind, the seal 2 is O-ring seals.
In further preferred embodiment, the O-ring seals are that the O shapes prepared by elastic deformation material seal
Part, preferably O shapes rubber seal.
Wherein, the sealing that the O shapes rubber seal is used between tube sheet 9 and sleeve pipe 3, it should have compressibility, can
Produce elastic deformation and realize sealing, to avoid the water pressure test from leaking, its specification determines according to heat exchanger tube specification.
According to a kind of preferred embodiment of the utility model, the internal diameter of described sleeve pipe 3 is more than the external diameter of heat exchanger tube 7.
Wherein, described sleeve pipe 3 is used for the pressure that water is born in the water pressure test, and its specification is determined by the specification of heat exchanger tube 7,
Internal diameter is slightly larger than heat exchanger tube external diameter, to ensure that it smooth can be enclosed on heat exchanger tube.
According to a kind of preferred embodiment of the utility model, described sleeve pipe 3 is made up of rigid material.
In further preferred embodiment, the rigid material in stainless steel, steel alloy and tool steel one
Kind is a variety of.
Wherein, during the water pressure test, need to suppress into water in the gap between heat exchanger tube 7 and sleeve pipe 3, this is required
Sleeve pipe 3 has certain intensity and thickness, the pressure for making it be enough to bear the water pressure test.
According to a kind of preferred embodiment of the utility model, as shown in figure 1, being provided with vertical screw thread on the pipe joint 4
Hole 41 and horizontal screwed hole 42.
In further preferred embodiment, the vertical screwed hole 41 is connected through a screw thread with water pressure gauge 6；The horizontal spiral shell
Pit 42 is through hole, and described horizontal one end of screwed hole 42 is connected with sleeve pipe 3, and the other end is connected with suppressing equipment.
Preferably, gasket seal 8 is installed between the vertical screwed hole 41 and water pressure gauge 6,
Wherein, due to being threadedly coupled between pipe joint 4 and water pressure gauge 6, sealing is poor, it is necessary in two contact surfaces
Gasket seal is added, makes its extruding between the two elements, reaches the effect of sealing.
In embodiment still more preferably, the gasket seal 8 is made of metal, and is preferably made up of red copper.
Wherein, red copper is nonmagnetic, and conductive, heat conduction and decay resistance are preferable, and red copper pad is made in HTHP ring in it
Sealing position under border uses, and can effectively prevent that pad from falling apart the corrosion with medium, reaches the effect of sealing, its specification according to
The specification of water pressure gauge 6 determines.
According to a kind of preferred embodiment of the utility model, as shown in figure 1, the fastener 5 includes screw rod 51, baffle plate
52, pressing plate 53 and nut 54.
In further preferred embodiment, the baffle plate 52 is located at one end of screw rod 51；One end of the screw rod 51
The side of the through hole 12 and tube sheet 9 on sealing plate 1 is sequentially passed through, coordinates in the opposite side of tube sheet 9 with pressing plate 53 and nut 54 and connects
Connect so that sealing plate 1 is fitted tightly over the side of tube sheet 9.
Wherein, the heat exchanger tube 7 passes through the annular groove 11 at the center of sealing plate 1, is enclosed in sleeve pipe 3, and screw rod 51 passes through heat exchange
The periphery pore (not installing heat exchanger tube) of pipe 7, whole sealing device for water pressure test is fastenedly connected with test piece；It is described
The quantity of fastener is consistent with the quantity of through hole on sealing plate.
In the utility model, tube sheet 9 is referred to simulating in water pressure test workpiece and managed with the side that sealing plate 1 is brought into close contact
The secondary side of plate.
According to a kind of preferred embodiment of the utility model, the sealing plate 1, the connection between sleeve pipe 3 and pipe joint 4
Mode is welding.
Sealing device for water pressure test provided by the utility model, it is simple in construction, it is easy to operate, versatility and repeatability compared with
By force；Pressure vessel expanded joint leak detection is carried out using the present apparatus, it is possible to achieve the single cell water pressure test, and multigroup expanded joint can be carried out
The detection experiment of parameter；Sheet material is less used in the present apparatus, effectively shortens man-hour, reduces experimentation cost, and can be according to detection
As a result related process parameters are determined.
Sealing device for water pressure test provided by the utility model can follow the steps below the leak detection of the water pressure test, such as
Shown in Fig. 1, concrete operation step is：
1) heat exchanger tube 7 to be detected is passed through to the annular groove 11 of sealing plate 1, is enclosed in sleeve pipe 3, fastener 5 and tube sheet 9 is locked
Tightly；Water pressure gauge 6 is connected on pipe joint 2 with suppressing equipment；
Wherein, the heat exchanger tube 7 (being sealed with plug) of test piece is packed into sleeve pipe 3 through sealing plate 1, passes through seal 2
Realize and seal, the screw rod 51 in fastener 5 passes through heat exchanger tube periphery pore (not installing heat exchanger tube), and device is locked and tried
Test on workpiece, and realize good sealing.
2) precision calibration is carried out to water pressure gauge, leakage indicator is added between the tube sheet and heat exchanger tube of test piece；
Wherein, after the water of seepage is touched the color change that naked eyes can observe can occur for the leakage indicator, just
In leak detection directly perceived；
3) unlatching is suppressed equipment and slowly suppressed, and observes whether each junction leaks, until reach water pressure test requirement pressure,
It is then shut off suppressing equipment, carries out pressurize；
4) whether the gauge pressure that water pressure gauge 6 is observed after the time of pressurize one end declines, and observes whether leakage indicator changes colour.
Wherein, in expanding joint process evaluation, the slip of tube-to-tube sheet connection expanded joint needs to be less than 40mm/min, can be only achieved matter
Amount requires.
In addition, using sealing device for water pressure test provided by the utility model can also investigate tube-tube plate expanding joint process and
Parameter, it can specifically be carried out by following operating procedure：
1) multiple pores are pre-set on tube sheet, by the heat exchanger tube insertion pore of 1 adaptation diameter, select expanded joint work
After skill and parameter, expanded joint is carried out；
2) after the completion of expanded joint, sealing propertytest, such as Fig. 1 are carried out using sealing device for water pressure test provided by the utility model
Described, operating procedure is：
2.1) heat exchanger tube 7 to be detected is passed through to the annular groove 11 of sealing plate 1, is enclosed in sleeve pipe 3, by fastener 5 and tube sheet 9
Locking；Then water pressure gauge 6 is connected on pipe joint 2 with suppressing equipment；
2.2) precision calibration is carried out to water pressure gauge, leakage indicator is added between the tube sheet and heat exchanger tube of test piece；
2.3) unlatching is suppressed equipment and slowly suppressed, and observes whether each junction leaks, until reaching water pressure test requirement pressure
Power, it is then shut off suppressing equipment, carries out pressurize；
2.4) whether the gauge pressure that water pressure gauge 6 is observed after the time of pressurize one end declines, and observes whether leakage indicator changes colour.
3) determine whether expanded joint quality qualified according to the testing result of step 2, so that it is determined that expanding joint process and parameter whether
It is feasible.
4) according to the testing result of step 3, the expanding joint process and parameter of next heat exchanger tube are selected, then repeat step 1
To 3, final screening obtains optimal expanding joint process and expanded joint parameter.
, it is necessary to explanation, the orientation of the instruction such as term " on ", " under ", " interior ", " outer " in description of the present utility model
Or position relationship is based on the orientation or position relationship under utility model works state, is for only for ease of and describes this practicality newly
Type and simplifying describes, rather than instruction or implies that signified device or element must have specific orientation, with specific orientation
Construction and operation, therefore it is not intended that to limitation of the present utility model.
The utility model is illustrated above in association with preferred embodiment, but these embodiments are only models
Example property, only play illustrative effect.On this basis, a variety of replacements and improvement can be carried out to the utility model, these
Each fall within the scope of protection of the utility model.
Claims (10)
1. a kind of sealing device for water pressure test, including sealing plate (1), seal (2), sleeve pipe (3), pipe joint (4) and fastener
(5), it is characterised in that
Annular groove (11) and through hole (12) are offered on the sealing plate (1),
The annular groove (11) is located at the center of sealing plate (1), and the through hole (12) is evenly distributed in around annular groove (11),
The seal (2) is arranged in annular groove (11),
Described sleeve pipe (3) one end is connected with sealing plate (1), and the other end is connected with pipe joint (4).
2. sealing device for water pressure test according to claim 1, it is characterised in that the annular groove (11) has 1, institute
Through hole (12) is stated with more than 2.
3. sealing device for water pressure test according to claim 1, it is characterised in that the depth of the annular groove (11) with it is close
The thickness ratio of sealing (2) is (0.2~0.8)：1.
4. sealing device for water pressure test according to claim 3, it is characterised in that the depth of the annular groove (11) with it is close
The thickness ratio of sealing (2) is 0.5：1.
5. sealing device for water pressure test according to claim 1, it is characterised in that the seal (2) seals for O shapes
Part.
6. sealing device for water pressure test according to claim 1, it is characterised in that the internal diameter of described sleeve pipe (3), which is more than, to be changed
The external diameter of heat pipe (7).
7. sealing device for water pressure test according to claim 1, it is characterised in that be provided with the pipe joint (4) vertical
Screwed hole (41) and horizontal screwed hole (42).
8. sealing device for water pressure test according to claim 7, it is characterised in that
The vertical screwed hole (41) is connected through a screw thread with water pressure gauge (6)；
The horizontal screwed hole (42) is through hole, and described horizontal screwed hole (42) one end is connected with sleeve pipe (3), and the other end is with suppressing equipment
Connection.
9. sealing device for water pressure test according to claim 8, it is characterised in that the vertical screwed hole (41) and water pressure gauge
(6) gasket seal (8) is installed between.
10. sealing device for water pressure test according to claim 1, it is characterised in that the fastener (5) includes screw rod
(51), baffle plate (52), pressing plate (53) and nut (54),
One end of the screw rod (51) sequentially passes through the side of the through hole (12) and tube sheet (9) on sealing plate (1), in tube sheet (9)
Opposite side and pressing plate (53) and nut (54) mating connection so that sealing plate (1) is fitted tightly over the side of tube sheet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720922423.8U CN206945231U (en) | 2017-07-27 | 2017-07-27 | A kind of sealing device for water pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720922423.8U CN206945231U (en) | 2017-07-27 | 2017-07-27 | A kind of sealing device for water pressure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206945231U true CN206945231U (en) | 2018-01-30 |
Family
ID=61371699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720922423.8U Active CN206945231U (en) | 2017-07-27 | 2017-07-27 | A kind of sealing device for water pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206945231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238473A (en) * | 2017-07-27 | 2017-10-10 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of sealing device for water pressure test |
| CN109752147A (en) * | 2018-12-07 | 2019-05-14 | 四川中车玉柴发动机股份有限公司 | A kind of cam hole oil duct hydraulic pressure test fixture |
-
2017
- 2017-07-27 CN CN201720922423.8U patent/CN206945231U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238473A (en) * | 2017-07-27 | 2017-10-10 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of sealing device for water pressure test |
| CN107238473B (en) * | 2017-07-27 | 2023-10-24 | 哈电集团（秦皇岛）重型装备有限公司 | Hydrostatic test sealing device |
| CN109752147A (en) * | 2018-12-07 | 2019-05-14 | 四川中车玉柴发动机股份有限公司 | A kind of cam hole oil duct hydraulic pressure test fixture |
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