CN105606309A - Valve test machine with replaceable end cap - Google Patents
Valve test machine with replaceable end cap Download PDFInfo
- Publication number
- CN105606309A CN105606309A CN201510976839.3A CN201510976839A CN105606309A CN 105606309 A CN105606309 A CN 105606309A CN 201510976839 A CN201510976839 A CN 201510976839A CN 105606309 A CN105606309 A CN 105606309A
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- China
- Prior art keywords
- end cap
- main body
- plate
- valve
- ball valve
- Prior art date
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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
Abstract
The invention discloses a valve test machine with a replaceable end cap, and relates to the field of ball valve airtight test machine. The machine comprises a frame, sealing mechanisms arranged on two inner sides of the frame and a ball valve positioning mechanism between the two sealing mechanisms, and the two sealing mechanism are oppositely arranged; the sealing mechanisms comprises end cap modules, end cap positioning modules and driving modules, the end cap modules comprises end cap bodies, end cap positioning plates fixed to the tail part of the end cap bodies, extruding sockets sleeved on the end cap bodies and sliding along the end cap bodies, socket positioning plates sleeved on the end cap bodies and fixed to the tail part of the extruding sockets, and retaining mechanisms arranged in the end cap bodies; and sealing rings are sleeved on every end cap body. According to the invention, for solving problems that the ball valve in prior art is inconvenient to clamp and easily deform of the ball valve influences test precision, a valve test machine is provided and has characteristics of unstressed ball valve end surface, quickly changeable end cap, no clamping deformation of the ball valve and the end cap comprising an automatic retaining function.
Description
Technical field
The present invention relates to ball valve air tightness test machine field, relate in particular to a kind of valve-testing machine of replaceable end cap.
Background technology
Ball valve is that spheroid rotates with valve rod, to realize the valve of switching motion with making opening and closing element with the spheroid of manhole.Ball valve is mainly used as cut-out, distributes and change the flow direction of medium.
Industrial polythene PE ball valve is the important control assembly of PE pipe network, before therefore using, requires taking Compressed Gas as mediumCarry out experiments of sealing performance. When prior art is tested ball valve, conventionally adopt sealing gasket or sealing ring be placed in ball valve two ends outsidePortion is clamped in ball valve two ends with the force application apparatus such as cylinder or jack simultaneously, thereby makes two of sealing gasket or sealing ring and ball valvesEnd forms sealing, the ball valve after whole sealing is immersed in the water, then passes into Compressed Gas toward ball valve inside and check its sealingEnergy.
Above-mentioned test method has following shortcoming: 1, operating process complexity, its frame weight is heavier, need be by external equipmentFrame is immersed in the water, and the installation of ball valve also comparatively bothers; Thereby 2, adopting jack to press down pressing plate carries out close to ball valveEnvelope and sealing ring are placed in outside, ball valve two ends, and while sealing at ball valve two ends by cylinder clamping, the two dynamics allMore difficult control, the power that presses down or clamp is inadequate, may make the sealing of pressing plate and ball valve end not firm, thus impact examinationThe accuracy of testing, brings qualitative erroneous judgement, and the power that presses down or clamp is excessive, can make ball valve deform, and causes ball valveEnd face out-of-flatness, thus make cannot form sealing between ball valve and pressing plate, bring qualitative erroneous judgement, in addition, press down or press from both sidesTight power is excessive, also may directly damage ball valve.
Summary of the invention
In order to solve, current ball valve clamping is inconvenient, the problem of the easy deformation effect measuring accuracy of ball valve in the present invention, proposesA kind of ball valve end face does not stress, convenient replacing end cap, can not make ball valve be held distortion and end cap there is automatic stopping functionValve-testing machine.
To achieve these goals, the present invention by the following technical solutions: a kind of valve-testing machine of replaceable end cap, bagIncluding rack, be arranged on the ball valve detent mechanism between sealing mechanism and two sealing mechanisms of the inner both sides of frame, twoSealing mechanism be oppositely arranged; Described sealing mechanism comprises end cap module, end cap locating module and driver module, described endCover module comprises end cap main body, with the fixing end cap location-plate of end cap main body afterbody, being set in can be along end cap master in end cap main bodyCompression sleeve that body slides, be set in end cap main body and with the fixing sleeve location-plate of compression sleeve afterbody be arranged on endStopping mechanism in lid main body; In described end cap main body, be also arranged with sealing ring, end cap body front end sidewall is provided with sealingThe spacing preiection of circle, sealing ring is spacing between spacing preiection and compression sleeve front end; Run through end cap main body and end cap location-plateBe provided with at least one test pore; Described stopping mechanism comprises that a retreat stop block, contiguous block, piston and one returnMultiple spring, offers piston slideway on described end cap body front end face, and described piston is slidably disposed on piston slidewayIn; The storage tank that offers retreat stop block in described end cap main body wall, offers permission retreat stop block on described compression sleeveThe perforate of passing, described retreat stop block can move up and down in storage tank, and the storage tank of retreat stop block and the piston of piston cunningRoad is communicated with; Described retreat stop block inside is provided with two fixed pulleys; Described contiguous block one end is connected with piston, and the other end is to endThe knee of lid central axis bending, described knee can stretch between two fixed pulleys of retreat stop block, drives retreat stop block to do upper and lowerMobile; On described contiguous block, be also arranged with a returning spring of replying for piston; Described frame is provided with for stoppingMove back piece and stretch out rear spacing baffle plate, in the middle of described baffle plate, offer the perforate that allows end cap main body to pass; Described end cap is fixedPosition module comprises end cap installing plate and driving contiguous block, and the end cap location-plate of described end cap module is bolted on end cap peaceOn dress plate, on described end cap installing plate, be also provided with test pore with the test pore correspondence position of end cap location-plate; DescribedDrive contiguous block front end to be provided with some plugs and play bolt, the smooth section that described plug is played bolt runs through the setting of end cap installing plate, end cap peaceDress plate is limited in plug and beats bolt smooth section, can play the slip of bolt smooth section at plug, fills in and makes the cap portion of bolt and sleeve location-plateBoth sides correspondence, can move forward by drive sleeve location-plate, and described driving contiguous block rear side is connected with driver module; Described ball valve is fixedPosition mechanism comprises two V-type bracing frames and four limiting plates, and two described V-type bracing frames are located at that two sealing mechanisms connectOn straight line, for sustaining ball valve; Rectangular four the some positions of four described limiting plates are symmetrical arranged, for ball valve center valve bodyScreens.
As preferably, it is identical that described spacing preiection and compression sleeve front end are provided with gradient for the spacing face of sealing ringChamfering.
As preferably, described end cap location-plate is " work " font, and described both sides, sleeve location-plate rear surface are provided with protrudingPiece, projection is fastened in the breach of end cap location-plate both sides, and described plug is played the cap portion setting corresponding to bump position of bolt.
As preferably, on described four angles of end cap location-plate, be respectively provided with a bolt positioning hole, described Bolt to positionHole is the aircraft hole of quick detach.
As preferably, described end cap main body is provided with two stopping mechanisms, and two stopping mechanisms are along end cap central axisBe symmetrical arranged.
As preferably, described driver module is cylinder, and the cylinder body of cylinder is fixed in frame, the cylinder axis of cylinder with driveThe piece that is dynamically connected connects.
As preferably, described end cap installing plate docks side test pore with end cap location-plate is arranged with a circle sealing outwardThe locating slot of ring, locating slot coaxially arranges with test pore, is provided with sealing ring in locating slot.
Therefore, the present invention has following beneficial effect: in 1, adopting, stretch the end cover designs of formula, ball valve end face does not stress, and carriesHigh measuring accuracy; 2, adopt the sealing of extruding expansion sealing ring, in end cap, stretch when mobile not can with wall friction in ball valve, convenient insertingPull out; 3, be provided with stopping mechanism, prevent that measuring air pressure is excessive, end cap retreats, and affects measuring accuracy.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of test mode of the present invention.
Fig. 3 is the structural representation of sealing mechanism of the present invention.
Fig. 4 is the structural representation of end cap module of the present invention.
Fig. 5 is the structural representation of another angle of end cap module of the present invention.
Fig. 6 is the top view of end cap module of the present invention.
Fig. 7 is the cutaway view of A-A in Fig. 6.
Fig. 8 is the front view of end cap module of the present invention.
Fig. 9 is the cutaway view of B-B in Fig. 8.
Figure 10 is the right view of Fig. 8.
Figure 11 is the left view of Fig. 8.
Figure 12 is the structural representation that end cap module of the present invention is used state.
Figure 13 is the structural representation of end cap locating module of the present invention.
Figure 14 is the structural representation of another angle of end cap locating module of the present invention.
1a: frame; 1b: ball valve detent mechanism; 1c: driver module; 1d: end cap locating module; 1e: end cap module; 1: endLid main body; 2: compression sleeve; 3: sleeve location-plate; 4: end cap location-plate; 5: bolt positioning hole; 6: perforate; 7: retreat stop block; 8: closeSeal; 9: piston slideway; 10: test pore; 11: projection; 12: spacing preiection; 13: stopping mechanism; 14: piston; 15: connectPiece; 16: returning spring; 17: knee; 18: fixed pulley; 19: storage tank; 20: baffle plate; 21: ball valve; 22: end cap installing plate; 23:Plug is played bolt; 24: drive contiguous block; 25: cylinder; 26: locating slot; 27:V type bracing frame; 28: limiting plate.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiments, the present invention will be further described.
A valve-testing machine for replaceable end cap, as shown in Fig. 1 to Figure 14, comprises frame 1a, is arranged in frame 1aBall valve detent mechanism 1b between the sealing mechanism of portion both sides and two sealing mechanisms, the sealing mechanism of two is established relativelyPut; Described sealing mechanism comprises end cap module 1e, end cap locating module 1d and driver module 1c, described end cap module 1e bagDraw together the end cap main body 1 of a cylindrical shape, with the fixing end cap location-plate 4 of end cap main body 1 afterbody, be set in end cap main body 1The compression sleeve 2 that can slide along end cap main body 1, be set in end cap main body 1 and with the fixing sleeve location of compression sleeve 2 afterbodysPlate 3 and be arranged on two stopping mechanisms 13 in end cap main body 1; In described end cap main body 1, be also arranged with O RunddichtringO 8,End cap main body 1 front end side wall is provided with the spacing preiection 12 of sealing ring 8, and sealing ring 8 is spacing at spacing preiection 12 and compression sleeve 2Between front end, described spacing preiection 12 and compression sleeve 2 front ends are provided with for the spacing face of sealing ring 8 that to be all provided with 45 degree obliqueThe chamfering of degree; Run through end cap main body 1 and end cap location-plate 4 and be provided with a test pore 10.
Described end cap location-plate 4 is " work " font, and described sleeve location-plate 3 both sides, rear surface are provided with projection 11, protrudingPiece 11 is fastened in the breach of end cap location-plate both sides, can prevent that compression sleeve 2 from moving forward and backward crush seal along end cap main body 1Enclose 8 o'clock, rotate. Described plug is beaten the cap portion and the projection 11 corresponding settings in position of bolt 23, and can promote projection 11 and move forward,And then promote compression sleeve 2 move forward, crush seal circle 8.
Two described stopping mechanisms 13 are symmetrical arranged along end cap central axis, each stopping mechanism 13 comprise one squareRetreat stop block 7, contiguous block 15, piston 14 and a returning spring 16, on described end cap main body 1 front end face, offerHave piston slideway 9, described piston 14 is slidably disposed in piston slideway 9; On described end cap main body 1 sidewall, offerThe storage tank 19 of retreat stop block 7, offers the perforate 6 that allows retreat stop block 7 to pass, described retreat stop block 7 on described compression sleeve 2Can in storage tank 19, move up and down, and the storage tank 19 of retreat stop block 7 and the piston slideway 9 of piston 14 are communicated with; Described stopsMove back piece 7 inside and be provided with two fixed pulleys 18; Described contiguous block 15 one end are connected with piston 14, and the other end is to end cap central shaftThe knee 17 of line bending, described knee 17 can stretch between two fixed pulleys 18 of retreat stop block 7, drives retreat stop block 7 to do upper and lowerMobile, when piston 14 retreats, drive contiguous block 15 to retreat, the fixed pulley 18 in retreat stop block 7 is along the knee of contiguous block 15 rear sides17 roll, and drive on retreat stop block 7 and move; On the contrary, piston 14 moves forward, and drives contiguous block 15 to move forward, fixed pulley 18 edges in retreat stop block 7The knee 17 of contiguous block 15 rear sides rolls, and drives retreat stop block 7 to move down; On described contiguous block 15, be also arranged with one for workThe returning spring 16 that plug 14 is replied.
On described 4 four angles of end cap location-plate, be respectively provided with a bolt positioning hole 5, described bolt positioning hole 5 is for justThe aircraft hole of installing in bolt.
Described end cap locating module 1d comprises end cap installing plate 22 and drives contiguous block 24, the end of described end cap module 1eLid location-plate 4 is bolted on end cap installing plate 22, on described end cap installing plate 22 with the test of end cap location-plate 4Pore 10 correspondence positions are also provided with test pore 10, and described end cap installing plate 22 docks the test gas of side with end cap location-plate 4The outer locating slot 26 that is arranged with a circle sealing ring in hole 10, locating slot 26 coaxially arranges with test pore 10, in locating slot 26, is provided withSealing ring; Described driving contiguous block 24 front ends are provided with some plugs and play bolt 23, and the smooth section that described plug is played bolt 23 runs through endLid installing plate 22 arranges, and end cap installing plate 22 is limited in plug and beats bolt 23 smooth section, can beat bolt 23 smooth section at plug and slide, plugThe cap portion of playing bolt 23 is corresponding with the both sides of sleeve location-plate 3, can move forward by drive sleeve location-plate 3, and described driving contiguous block24 rear sides are connected with driver module 1c, are connected with the cylinder axis of cylinder 25, and the cylinder body of cylinder 25 is fixed on frame 1a.
Arrange like this, whole end cap module 1e is just quick detach end cap, only need unscrew the fixing spiral shell at 4 four angles of end cap location-plateBolt, whole end cap module 1e just can disassemble replacing by aircraft hole, as shown in Figure 4, Figure 5, and due to end cap installing plate22 and end cap location-plate 4 interfaces be provided with sealing ring mechanism, can ensure the sealing property of quick detach end cap test pore 10.
Before described end cap module 1e, on side frame 1a, be also provided with the baffle plate 20 for end cap main body 1 retaining, in baffle plate 20Between offer the perforate that allows end cap main body 1 to pass.
Described ball valve detent mechanism 1b comprises two V-type bracing frames 27 and four limiting plates 28, and two described V-types are propped upSupport 27 is located on the straight line of two sealing mechanisms connections, for the valve arm at sustaining ball valve 21 two ends; Four described limiting plates28 rectangular four some positions are symmetrical arranged, and for ball valve 21 center valve body screens, prevent that ball valve 21 inside are in pressure process,There is left and right skew in ball valve, affects test result.
When use, first ball valve 21 is put in frame 1a, the valve arm of ball valve 21 both sides is supported on respectively two V-type bracing framesOn 27, center valve body is placed in four limiting plate 28 realizing middle limitings; The cylinder 25 that starts frame 1a both sides, cylinder 25 drives whole endLid locating module 1d and end cap module 1e move, close owing to being provided with between the spacing preiection 12 of end cap module 1e and compression sleeve 2Seal 8, now, can relative sliding between end cap main body 1 and compression sleeve 2. When end cap main body 1 stretches into one end of ball valve 21After, end cap installing plate 22 both sides are stopped by frame 1a, stop reach, driver module 1c plays bolt 23 by plug and continues to promote extrudingThe projection 11 of sleeve 2 rear side sleeve location-plate 3 both sides, compression sleeve 2 continues reach, crush seal circle 8, sealing ring 8 expansions are squeezedBe pressed in ball valve 21 inwalls, realize sealing, as shown in figure 12; By the test pore 10 of end cover inside, interior logical toward ball valve 21Gas pressurization, air pressure increases at any time, and piston 14 pressurizeds in end cap main body 1 retreat, and drive contiguous block 15 to retreat, in retreat stop block 7Fixed pulley 18 rolls along the knee 17 of contiguous block 15 rear sides, drives on retreat stop block 7 and moves, be limited on the baffle plate 20 of frame 1a,Prevent that whole end cover is increased by close beta air pressure and retreats, and affects measuring accuracy. After test finishes, air pressure inside fromThe interior eliminating of test pore 10, ball valve 21 internal gas pressures reduce, and piston 14, due to the effect of returning spring 16, is replied reach, the company of driveConnect piece 15 and move forward, the fixed pulley 18 in retreat stop block 7 rolls along the knee 17 of contiguous block 15 rear sides, drives retreat stop block 7 to move down, and separatesExcept restriction, cylinder 25 bounces back, and pulls end cap module 1e and end cap locating module 1d to retreat, and plug is played bolt 23 and stopped pushing protruding simultaneouslyPiece 11, sealing ring 8 is replied and is dwindled, and stops pushing ball valve 21 inwalls, and end cap main body 1 shifts out in ball valve 21 end faces, completes oneThe test of individual ball valve 21.
Claims (8)
1. a valve-testing machine for replaceable end cap, comprises frame (1a), is arranged on the sealer of the inner both sides of frame (1a)Ball valve detent mechanism (1b) between structure and two sealing mechanisms, the sealing mechanism of two is oppositely arranged; It is characterized in that:
Described sealing mechanism comprises end cap module (1e), end cap locating module (1d) and driver module (1c), described end capModule (1e) comprises end cap main body (1), with the fixing end cap location-plate (4) of end cap main body (1) afterbody, be set in end cap main body(1) compression sleeve (2) that can slide along end cap main body (1) on, be set in end cap main body (1) upper and with compression sleeve (2) afterbodyFixing sleeve location-plate (3) and be arranged on the stopping mechanism (13) in end cap main body (1); Described end cap main body (1) is also upperBe arranged with sealing ring (8), end cap main body (1) front end side wall is provided with the spacing preiection (12) of sealing ring (8), sealing ring (8) limitPosition is between spacing preiection (12) and compression sleeve (2) front end; Run through end cap main body (1) and end cap location-plate (4) is provided with at leastA test pore (10);
Described stopping mechanism (13) comprises a retreat stop block (7), a contiguous block (15), a piston (14) and a replySpring (16), offers piston slideway (9) on described end cap main body (1) front end face, and described piston (14) is established slidablyPut in piston slideway (9); On described end cap main body (1) sidewall, offer the storage tank (19) of retreat stop block (7), described squeezesOn gland cylinder (2), offer the perforate (6) that allows retreat stop block (7) to pass, described retreat stop block (7) can be done in storage tank (19)Move up and down, and the storage tank (19) of retreat stop block (7) and the piston slideway (9) of piston (14) are communicated with; In described retreat stop block (7)Portion is provided with two fixed pulleys (18); Described contiguous block (15) one end is connected with piston (14), and the other end is to end cap central shaftThe knee (17) of line bending, described knee (17) can stretch between two fixed pulleys (18) of retreat stop block (7), drives retreat stop block(7) move up and down; On described contiguous block (15), be also arranged with a returning spring (16) of replying for piston (14);
Described frame (1a) is provided with for retreat stop block (7) stretches out rear spacing baffle plate (20), in the middle of described baffle plate (20)Offer the perforate that allows end cap main body (1) to pass;
Described end cap locating module (1d) comprises end cap installing plate (22) and drives contiguous block (24), described end cap module (1e)End cap location-plate (4) to be bolted on end cap installing plate (22) upper, described end cap installing plate (22) upper with end cap calmlyTest pore (10) correspondence position of position plate (4) is also provided with test pore (10); Described driving contiguous block (24) front end is provided withSome plugs are played bolt (23), and the smooth section that described plug is played bolt (23) runs through end cap installing plate (22) setting, end cap installing plate(22) be limited in plug and beat bolt (23) smooth section, can beat bolt (23) smooth section at plug and slide, fill in beat bolt (23) cap portion andThe both sides correspondence of sleeve location-plate (3), can drive sleeve location-plate (3) reach, described driving contiguous block (24) rear side with driveDynamic model piece (1c) is connected;
Described ball valve detent mechanism (1b) comprises two V-type bracing frames (27) and four limiting plates (28), two described V-typesBracing frame (27) is located on the straight line of two sealing mechanisms connections, for sustaining ball valve (21); Described four limiting plates (28)Rectangular four some positions are symmetrical arranged, for ball valve (21) center valve body screens.
2. the valve-testing machine of a kind of replaceable end cap according to claim 1, is characterized in that: described spacing preiection(12) be provided with for the spacing face of sealing ring (8) chamfering that gradient is identical with compression sleeve (2) front end.
3. the valve-testing machine of a kind of replaceable end cap according to claim 1, is characterized in that: described end cap locationPlate (4) is " work " font, and described sleeve location-plate (3) both sides, rear surface are provided with projection (11), and projection (11) is fastened on end capIn the breach of location-plate both sides, described plug is beaten the cap portion and the corresponding setting in projection (11) position of bolt (23).
4. according to the valve-testing machine of a kind of replaceable end cap described in claim 1 or 3, it is characterized in that: described end capLocation-plate is respectively provided with a bolt positioning hole (5) on (4) four angles, the aircraft hole that described bolt positioning hole (5) is quick detach.
5. according to the valve-testing machine of a kind of replaceable end cap described in arbitrary claim in claims 1 to 3, its feature existsIn: described end cap main body (1) is provided with two stopping mechanisms (13), and two stopping mechanisms (13) are along end cap central axis symmetryArrange.
6. the valve-testing machine of a kind of replaceable end cap according to claim 4, is characterized in that: described end cap main body(1) be provided with two stopping mechanisms (13), two stopping mechanisms (13) are symmetrical arranged along end cap central axis.
7. the valve-testing machine of a kind of replaceable end cap according to claim 1, is characterized in that: described driver module(1c) be cylinder (25), it is upper that the cylinder body of cylinder (25) is fixed on frame (1a), the cylinder axis of cylinder (25) and driving contiguous block(24) connect.
8. the valve-testing machine of a kind of replaceable end cap according to claim 1, is characterized in that: described end cap is installedPlate (22) docks the outer locating slot (26) that is arranged with a circle sealing ring of test pore (10) of side, location with end cap location-plate (4)Groove (26) coaxially arranges with test pore (10), and locating slot is provided with sealing ring in (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510976839.3A CN105606309B (en) | 2015-12-22 | 2015-12-22 | A kind of valve-testing machine of replaceable end cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510976839.3A CN105606309B (en) | 2015-12-22 | 2015-12-22 | A kind of valve-testing machine of replaceable end cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105606309A true CN105606309A (en) | 2016-05-25 |
| CN105606309B CN105606309B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510976839.3A Expired - Fee Related CN105606309B (en) | 2015-12-22 | 2015-12-22 | A kind of valve-testing machine of replaceable end cap |
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| JP2000258282A (en) * | 1999-03-08 | 2000-09-22 | Nasuko Fitting Kk | Piping leakage inspecting implement |
| CN204064569U (en) * | 2014-06-25 | 2014-12-31 | 福建闽机机械科技有限公司 | A kind of valve seal detection device |
| CN204286688U (en) * | 2014-12-30 | 2015-04-22 | 承德石油高等专科学校 | A kind of valve of PE valve seal testing machine moves and clamping device |
| CN204556179U (en) * | 2015-05-14 | 2015-08-12 | 杭州戴雷科技有限公司 | Ball valve air tightness test machine |
| CN105092233A (en) * | 2015-09-11 | 2015-11-25 | 杭州戴雷科技有限公司 | Ball valve test machine capable of carrying out airtightness tests and torque tests |
| CN105157933A (en) * | 2015-09-11 | 2015-12-16 | 宁波市宇华电器有限公司 | Ball valve sealing testing apparatus |
-
2015
- 2015-12-22 CN CN201510976839.3A patent/CN105606309B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000258282A (en) * | 1999-03-08 | 2000-09-22 | Nasuko Fitting Kk | Piping leakage inspecting implement |
| CN204064569U (en) * | 2014-06-25 | 2014-12-31 | 福建闽机机械科技有限公司 | A kind of valve seal detection device |
| CN204286688U (en) * | 2014-12-30 | 2015-04-22 | 承德石油高等专科学校 | A kind of valve of PE valve seal testing machine moves and clamping device |
| CN204556179U (en) * | 2015-05-14 | 2015-08-12 | 杭州戴雷科技有限公司 | Ball valve air tightness test machine |
| CN105092233A (en) * | 2015-09-11 | 2015-11-25 | 杭州戴雷科技有限公司 | Ball valve test machine capable of carrying out airtightness tests and torque tests |
| CN105157933A (en) * | 2015-09-11 | 2015-12-16 | 宁波市宇华电器有限公司 | Ball valve sealing testing apparatus |
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| CN105606309B (en) | 2017-11-07 |
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Address after: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant after: CHINA JILIANG UNIVERSITY Address before: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant before: China Jiliang University |
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Granted publication date: 20171107 Termination date: 20191222 |