CN209524224U - A kind of mechanical plug tool suppressed for check-valves - Google Patents
A kind of mechanical plug tool suppressed for check-valves Download PDFInfo
- Publication number
- CN209524224U CN209524224U CN201822159439.5U CN201822159439U CN209524224U CN 209524224 U CN209524224 U CN 209524224U CN 201822159439 U CN201822159439 U CN 201822159439U CN 209524224 U CN209524224 U CN 209524224U
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- bottom plate
- thrust plate
- rubber seal
- plate
- check
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Abstract
The utility model relates to swing check valve technical fields, specifically disclose a kind of mechanical plug tool suppressed for check-valves.The tool includes thrust plate, rubber seal and bottom plate, wherein, certain thickness rubber seal is fixedly clamped by the thrust plate and bottom plate of two circular pan-like structures, and it is using the extruding screw across thrust plate, rubber seal and bottom plate that thrust plate and bottom plate is relatively fixed, pass through the nut on extruding screw outside rotation thrust plate, so that thrust plate and bottom plate is squeezed rubber seal, deforms rubber seal and block the lower flow channel of pending bulge test valve.The tool construction is simple, and size minimizes, and mounting and adjusting is convenient；The amount of compression to rubber seal all directions is adjusted by four screw rods, guarantees that plug rubber seal is bonded valve lower flow channel completely entirely；The thrust button of tool can hang over valve inner wall, and plug tool will not be excessive and be flushed to downstream line because of pressure is suppressed.
Description
Technical field
The invention belongs to swing check valve technical fields, and in particular to a kind of mechanical plug work suppressed for check-valves
Tool.
Background technique
Nuclear power plant needs quantitative assessment to be detected swing check valve maintenance to guarantee that check-valves is reliable for operation after overhaul plays machine
Quality.Valve leak rate can accurately be detected using the method that part is suppressed online, identify valve seal performance.It is needed thus only
Return in valve valve chamber establish one it is closed suppress environment, but the valve chamber of this type check-valves is all not pass through to downstream canal inner wall
The casting plane of processing, and by factors such as fluid scouring, corrosion, the usual out-of-flatness of inner wall, downstream canal is in ellipse+loudspeaker
Irregular shape；In addition, online bulge test of check-valves itself is to monitor the minimum leakage rate of valve, in order to guarantee bulge test
As a result reliable, high request is proposed to downstream side plug function and performance.Valve chamber entrance opening dimension is smaller, thus plug meet it is close
Necessary structure is simply small and exquisite under the premise of sealing function.
Summary of the invention
The purpose of the present invention is to provide a kind of mechanical plug tools suppressed for check-valves, solve in check-valves valve chamber
The problem of downstream side is blocked when suppressing experiment under narrow space reality online.
Technical scheme is as follows: a kind of mechanical plug tool suppressed for check-valves, which includes thrust
Plate, rubber seal and bottom plate, wherein the thrust plate and bottom plate of two circular pan-like structures are by certain thickness rubber seal
Circle is fixedly clamped, and using the extruding screw across thrust plate, rubber seal and bottom plate that thrust plate is opposite with bottom plate solid
It is fixed, by the nut on extruding screw outside rotation thrust plate, so that thrust plate and bottom plate is squeezed rubber seal, make rubber seal
Deform and block the lower flow channel of pending bulge test valve.
The thrust plate is the disc structure that upper and lower ends have trunnion, is provided with through-hole at the center of thrust plate, with
The nose bar at bottom plate center matches, and can quickly be positioned with thrust plate by the nose bar on bottom plate.
Middle position is circumferentially uniformly provided with the tapped blind hole phase on 4 through-holes, with bottom plate on the thrust plate
Match, extruding screw may pass through the through-hole on thrust plate, and be fixed in the tapped blind hole on bottom plate.
The thrust plate and bottom plate side that is in contact with rubber seal is provided with three annular grooves.
The rubber seal lateral wall is disposed with four cords, for increasing and the sealing effect of inner wall.
Trunnion trunnion on the thrust plate hangs over thrust plate by two sides trunnion slightly larger than side port diameter under valve chamber
It is mobile to limit its phase valve chamber downstream axial, and coats nylon sheet in trunnion and valve chamber contact position for valve chamber inner wall, prevents from scratching valve
Door inner wall.
Remarkable result of the invention is: a kind of mechanical plug tool suppressed for check-valves of the present invention,
Structure is simple, and size minimizes, and mounting and adjusting is convenient；The extruding to rubber seal all directions is adjusted by four screw rods
Amount guarantees that plug rubber seal is bonded valve lower flow channel completely entirely；The thrust button of tool can hang over valve inner wall, plug tool
It will not be excessive and be flushed to downstream line because of pressure is suppressed.
Detailed description of the invention
Fig. 1 is a kind of mechanical plug tool scheme of installation suppressed for check-valves of the present invention；
Fig. 2 is mechanical plug tool end structural schematic diagram in Fig. 1；
In figure: 1, extruding screw；2, check-valves valve deck；3, thrust plate；4, rubber seal；5, bottom plate.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1 and Figure 2, a kind of mechanical plug tool suppressed for check-valves, including thrust plate 3, rubber seal
4 and bottom plate 5, wherein thrust plate 3 is that there are two the disc structures of trunnion for upper and lower ends band, in 3 center of thrust plate and disk
Several through-holes are provided on face, there are four through-holes for example, uniformly opening on the periphery at 3 center of thrust plate；Band centered on bottom plate 5
There is the disc structure of nose bar, 5 center nose bar of bottom plate protrudes into the central through hole of thrust plate 4, and will set among thrust plate 3 and bottom plate 5
The rubber seal 4 set clamps, and extruding screw 1 rushes across the through-hole on thrust plate 3 i.e. rubber seal 4 and bottom plate 5 is relatively fixed,
It is cased with nut on the extruding screw 1 for being located at 3 outside of thrust plate, by rotating nuts, thrust plate 3 and bottom plate 5 is made to squeeze rubber
Sealing ring 4 deforms rubber seal to extension；Three rings are carved in thrust plate 3, bottom plate 5 side that is in contact with rubber seal 4
Slot is disposed with four cords in 4 lateral wall of rubber seal and increases and inner wall sealing effect；5 disk diameter of bottom plate and thrust plate 3
Disc face diameter is suitable, and is slightly less than side port under valve chamber to be blocked and goes out, and the trunnion of thrust plate 3 is straight slightly larger than side port under valve chamber
Diameter makes thrust plate 3 hang over valve chamber inner wall by two sides trunnion, it is mobile to limit its phase valve chamber downstream axial, and in trunnion and valve chamber
Contact position coats nylon sheet, prevents from scratching valve inner wall.
A kind of specifically used process for the mechanical plug tool suppressed for check-valves shown in the present invention are as follows: beaten in valve
Before pressure test, unscrews 1 top nut of extruding screw, glue sealing ring 4 is made to be in free state, manually fill in plug tool from valve deck
Enter on the downside of valve chamber, grasped at 5 center of bottom plate with standard socket wrench, twists four 1 top nuts of extruding screw respectively, adjust each side
To amount of compression, make rubber seal 4 periphery be close to valve lower flow channel inner wall.After having adjusted, back tightening nut, plug tool are locked
It is installed.Sealing ring 4 is disposed with four cords and increases and inner wall sealing effect.Thrust plate 3, bottom plate 5 and rubber seal 4 connect
Three annular grooves are carved in touching side, increase the sealing effect between them.Plug bottom plate 5 hangs over valve chamber inner wall by two sides trunnion, limits
Axial movement to valve chamber downstream, trunnion and valve chamber contact position coat nylon sheet, prevent from scratching valve inner wall.
Claims (6)
1. a kind of mechanical plug tool suppressed for check-valves, it is characterised in that: the tool includes that thrust plate (3), rubber are close
Seal (4) and bottom plate (5), wherein the thrust plates (3) of two circular pan-like structures and bottom plate (5) are by certain thickness rubber
Sealing ring (4) is fixedly clamped, and will using the extruding screw (1) across thrust plate (3), rubber seal (4) and bottom plate (5)
Thrust plate (3) and bottom plate (5) are relatively fixed, by the nut in rotation thrust plate (3) outer extruding screw (1), make thrust plate (3)
Rubber seal (4) are squeezed with bottom plate (5), deform rubber seal (4) and block flowing down for pending bulge test valve
Road.
2. a kind of mechanical plug tool suppressed for check-valves according to claim 1, it is characterised in that: described stops
Push plate (3) is the disc structure that upper and lower ends have trunnion, through-hole is provided at the center of thrust plate (3), with bottom plate (5) center
Nose bar match, by the nose bar on bottom plate (5) can with thrust plate (3) quickly position.
3. a kind of mechanical plug tool suppressed for check-valves according to claim 1 or 2, feature are in-service: described
Thrust plate (3) on middle position be circumferentially uniformly provided with 4 through-holes, match with the tapped blind hole on bottom plate (5), squeeze
Screw rod (1) may pass through the through-hole on thrust plate (3), and in the tapped blind hole being fixed on bottom plate (5).
4. a kind of mechanical plug tool suppressed for check-valves according to claim 1, feature are in-service: described stops
Push plate (3) and bottom plate (5) side that is in contact with rubber seal (4) are provided with three annular grooves.
5. a kind of mechanical plug tool suppressed for check-valves according to claim 1, feature are in-service: the rubber
Glue sealing ring (4) lateral wall is disposed with four cords, for increasing and the sealing effect of inner wall.
6. a kind of mechanical plug tool suppressed for check-valves according to claim 2, it is characterised in that: described stops
Trunnion in push plate (3) makes thrust plate (3) to hang over valve chamber inner wall by two sides trunnion, limits slightly larger than side port diameter under valve chamber
Its phase valve chamber downstream axial is mobile, and coats nylon sheet in trunnion and valve chamber contact position, prevents from scratching valve inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822159439.5U CN209524224U (en) | 2018-12-21 | 2018-12-21 | A kind of mechanical plug tool suppressed for check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822159439.5U CN209524224U (en) | 2018-12-21 | 2018-12-21 | A kind of mechanical plug tool suppressed for check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209524224U true CN209524224U (en) | 2019-10-22 |
Family
ID=68227113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822159439.5U Active CN209524224U (en) | 2018-12-21 | 2018-12-21 | A kind of mechanical plug tool suppressed for check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209524224U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129471A (en) * | 2020-09-04 | 2020-12-25 | 中核核电运行管理有限公司 | Sealing test device for check valve |
| CN113175548A (en) * | 2021-04-21 | 2021-07-27 | 中核核电运行管理有限公司 | Online sealing performance measurement sealing plug of small-caliber nuclear-grade check valve |
| CN113464689A (en) * | 2021-04-19 | 2021-10-01 | 中核核电运行管理有限公司 | Online sealing performance measurement sealing plug of large-diameter nuclear-grade check valve |
| CN114235288A (en) * | 2021-11-23 | 2022-03-25 | 中广核工程有限公司 | Nuclear power station check valve plugging device |
-
2018
- 2018-12-21 CN CN201822159439.5U patent/CN209524224U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112129471A (en) * | 2020-09-04 | 2020-12-25 | 中核核电运行管理有限公司 | Sealing test device for check valve |
| CN113464689A (en) * | 2021-04-19 | 2021-10-01 | 中核核电运行管理有限公司 | Online sealing performance measurement sealing plug of large-diameter nuclear-grade check valve |
| CN113175548A (en) * | 2021-04-21 | 2021-07-27 | 中核核电运行管理有限公司 | Online sealing performance measurement sealing plug of small-caliber nuclear-grade check valve |
| CN114235288A (en) * | 2021-11-23 | 2022-03-25 | 中广核工程有限公司 | Nuclear power station check valve plugging device |
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