CN206945240U - A kind of polyethylene ball valve air-tightness detection device - Google Patents
A kind of polyethylene ball valve air-tightness detection device Download PDFInfo
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- CN206945240U CN206945240U CN201720488688.1U CN201720488688U CN206945240U CN 206945240 U CN206945240 U CN 206945240U CN 201720488688 U CN201720488688 U CN 201720488688U CN 206945240 U CN206945240 U CN 206945240U
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- ball valve
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Abstract
It the utility model is related to a kind of polyethylene ball valve air-tightness detection device, detection body provided with connection drive device, it is characterized in that described detection body includes the first promotion body being made up of the drive end bearing bracket being parallel to each other and preceding fixed pedestal, and the second promotion body that the rear end cap by being parallel to each other and rear fixed seat are formed；Seal is provided between drive end bearing bracket and rear end cap；First promotes body and second to promote body concatenation；Filling channel is provided with first promotion body；Aerating device is provided with first promotion body and the second promotion body.The arrangement of body device inner inflatable cylinder body is detected, without external gas source；Body cavity is sealed by promoting in body operation process, realizes continuous fast automatic completion inflation, and the direct reading from pressure gauge, it is very clear；Realize that Waterless is tested, environmental protection；Automaticity is high, effectively improves testing efficiency, and reusability is strong, reduces cost of labor.
Description
Technical field
Valve body detection technique is the utility model is related to, especially a kind of polyethylene ball valve air-tightness detection device.
Background technology
Air-leakage test will be carried out before ball valve product export, to ensure product quality.This kind of detection in the prior art
Equipment is relatively more, and its structure is varied, a kind of ball valve air-leakage test designed such as patent publication No. for CN105043675A
Equipment, including air feed pump, baroceptor, mainframe, two push pedal cylinders, two side frames, main side lid, secondary end cap, two
Push pedal cylinder is respectively provided on two side frames, and the piston rod of one of push pedal cylinder is connected with main side lid, another push pedal
The piston rod of cylinder is connected with secondary end cap, and main side covers is provided with secondary elastic sealing ring provided with main elastic packing ring pads, secondary end cap
Plate, main side are covered provided with main cover stomata.This structure is intended to the positioning and clamping to ball valve, to ensure sealing but not folder damage
Ball valve.And for example patent publication No. is CN104215408A, there is provided a kind of valve air-leakage test system that can detect air-tightness
System, including main air inlet pipe road, detection platform admission line and detection platform discharge duct are suitable by airintake direction on main air inlet pipe road
Sequence sets first pressure table, the first valve, the second valve, and detection platform admission line is arranged on the first valve and second valve
Between door, and connected with main air inlet pipe road；Second pressure gauge is arranged on detection platform discharge duct, and valve to be detected is arranged on
Between detection platform admission line and detection platform discharge duct.This structure is simply entered to multiple low valves to be detected simultaneously side by side
Row detection.These prior arts, sum up usually when testing ball valve, ball valve is placed in using sealing gasket or sealing ring
The outside at both ends, exerted a force with clamping device and clamp ball valve both ends, formed two ends of sealing gasket or sealing ring and ball valve and seal,
Then experimental rig is placed in visual sealing effectiveness environment together with ball valve, be such as immersed in the water, and toward being passed through compression inside ball valve
Gas, the air-tightness of ball valve each several part is examined by observing bubble etc..These methods need external gas source when testing, and are limited by condition
System, and ball valve is put into liquid and tested, efficiency is low, and causes environment dirty and messy.
The content of the invention
The purpose of this utility model is to solve the above problems, there is provided a kind of reasonable in design, having air source, and it is close
The polyethylene ball valve air-tightness detection device that envelope, inflation can be automatically performed.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：A kind of polyethylene ball
Valve air-tightness detection device, the detection body provided with connection drive device, it is characterized in that described detection body is included by being parallel to each other
Drive end bearing bracket and preceding fixed pedestal form first promote body, and the rear end cap by being parallel to each other and rear fixed seat form the
Two promote body；Seal is provided between drive end bearing bracket and rear end cap；First promotes body and second to promote body concatenation；First promotes in body
Provided with filling channel；Aerating device is provided with first promotion body and the second promotion body.
The technical program uses ball valve external stability method to be measured, reserves an access opening and is used as detection inflation, to valve
The end that body both ends are used for outer connection does not have the active forces such as any damaging clamping.Into ball valve access bore to be measured be and its
The end socket of inner hole, the end socket can be readily intercalated into valve body with gap fiting mode, and when having arrived defined position, in two panels
Pressing plate（That is drive end bearing bracket and rear end cap）Opposing compression effect under, seal is radially expanded, so as to seal ball to be measured
Valve endoporus, ball valve inner chamber to be measured is set to form a sealing cavity.
In the process, with the pressurizing piston that inflation cylinder body coordinates also with advance, after end socket positioning, pressurization is lived simultaneously
Plug continues to move forward, and by cylinder body airing form toward pressurizeing in ball valve to be measured, filling channel is sealed until pressurizing piston moves to bottom,
A cavity for possessing certain pressure is just formed in the tested side cavity of ball valve to be measured.The present apparatus is drawn on filling channel should
Air pressure in tested cavity monitors the air pressure change in valve body, so as to judge whether ball valve has to pressure gauge by pressure gauge
Leakage.All actions of the present apparatus are carried out continuously, and are accomplished without any letup, ball valve leakage information is very clear by pressure gauge.
Preferably, described aerating device includes inflation cylinder body and pressurizing piston, aerating device are located at preceding fixed pedestal
Between rear fixed seat.Drive device is positioned in rear fixed seat, pressurizing piston coordinates through rear fixed seat and inflation cylinder body
Produce the function of being inflated into valve body.Compact overall structure is reasonable, each component actuation continuum one.
Preferably, described pressurizing piston is connected through rear fixed seat with drive device, rear fixed seat is beaten by plug and led
Bar is connected with drive device.Aerating device and the second promotion body are commonly connected in same drive device, and all extruding, inflation are dynamic
Consecutively or simultaneously carry out.
Preferably, the diameter of described drive end bearing bracket coordinates with the access bore gap of ball valve one to be measured, preceding fixed pedestal
Area is more than ball valve access bore area to be measured.In the promotion body insertion valve body that drive end bearing bracket and preceding fixed pedestal are formed and position,
The promotion body one that rear end cap and rear fixed seat are formed is the crush seal body on the basis of drive end bearing bracket, second, the branch as pressurizing piston
Support body.The distance between drive end bearing bracket and preceding fixed pedestal are the depth in insertion valve body, and current fixed pedestal and valve body end face are tight
Position restriction is carried out to drive end bearing bracket during patch.
Preferably, pressurizing piston is provided with support spring towards one end of drive device, after one end of support spring is positioned at
In fixed seat.Support spring was both suppressed rear fixed seat, kept the pressure between drive end bearing bracket and rear end cap, and tie in detection
Pressurizing piston is resetted during beam.
Preferably, overvoltage protection mechanism is provided with by the external pressure gauge of tracheae, tracheae in described filling channel.Cross
Pressure protection mechanism is provided for preventing in pressurizing piston progradation, and air pressure is excessive and damage pressure gauge in valve body.
Preferably, described overvoltage protection mechanism includes valve body, switching sliding block is provided with valve body, passes through intratracheal pressure
Voluntarily control switching sliding block action makes tracheae connect or disconnect with pressure gauge.When pressure is too big, tracheae and pressure gauge are disconnected
Airway, protect the safety of pressure gauge.
Preferably, being provided with pressure gauge passage and pressure release passage in described valve body, the one end for switching sliding block is provided with reset
Spring, the distance between the isolating seal ring, two pieces isolating seal ring that switching sliding block is provided with two pieces parallel arrangement are more than pressure
Distance between table passage and pressure release passage.Position by switching sliding block, which voluntarily changes, realizes closing for tracheae and pressure gauge airway
With open.
The beneficial effects of the utility model are：The arrangement of body device inner inflatable cylinder body is detected, without external gas source；Pass through
Promote in body operation process and body cavity sealed, realize continuous fast automatic completion inflation, and the direct reading from pressure gauge,
It is very clear；Realize that Waterless is tested, environmental protection；Automaticity is high, effectively improves testing efficiency, and reusability is strong,
Reduce cost of labor.
Brief description of the drawings
Fig. 1 is a kind of operation readiness structural representation of the present utility model.
Fig. 2 is a kind of structural representation of the present utility model.
Fig. 3 is a kind of course of work status architecture schematic diagram of the present utility model.
Fig. 4 is pressurized state structural representation in a kind of ball valve of the present utility model.
Fig. 5 is a kind of overvoltage protection mechanism structural representation of the present utility model.
Fig. 6 is Fig. 5 pressure gauge decompression protection status architecture schematic diagram.
In figure：1. detect body, 2. ball valves to be measured, 3. drive devices, 4. drive end bearing brackets, fixed pedestal before 41., after 5.
End cap, fixed seat after 51., 6. filling channels, 7. seals, 8. tracheaes, 9. overvoltage protection mechanisms, 10. pressure gauges,
11. pressurizing piston, 12. plugs beat guide rod, 13. support springs, 14. back-moving springs, 15. pressure release passages, 16. switching cunnings
Block, 17. isolating seal rings.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
A kind of polyethylene ball valve air-tightness detection device of the present embodiment, including detection body 1, detection body 1 carry drive device
3, referring to Fig. 1, detect and the promotion body that two pieces coaxially concatenates is provided with body 1, the front end of the promotion body of two pieces concatenation is that have mutually
Two block pressur plates of squeeze function, the seal 7 that can radially expand is provided between two block pressur plates, by two block pressur plates and
Seal 7 collectively forms the end socket with the inner hole of ball valve 2 one to be measured, as shown in Fig. 2 being provided with filling channel 6 in the end socket, fills
One end of gas passage 6 leads to pneumatic cylinder body phase；Filling channel was also provided with by 8 external pressure gauge 10 of a bronchus, tracheae 8
Press protection mechanism 9.
Specifically, the pressing plate of the mutual extrusion fit of promotion body phase of two pieces concatenation is respectively drive end bearing bracket 4 and rear end cap 5, its
Middle drive end bearing bracket 4 connects one piece of preceding fixed pedestal 41 in parallel by a mandrel, by the drive end bearing bracket 4 being parallel to each other and preceding fixation
Pedestal 41 forms first and promotes body, and filling channel 6 is axially across mandrel.Rear end cap 5 by 6 connecting rods connect it is in parallel after
51,6 connecting rods of fixed seat are uniformly distributed through preceding fixed pedestal 41 and centered on mandrel, by the rear end cap 5 being parallel to each other
Second, which is formed, with rear fixed seat 51 promotes body；Seal 7 is between drive end bearing bracket 4 and rear end cap 5.Drive end bearing bracket 4, rear end cap 5
Diameter is coordinated with ball valve 2 to be measured detection with access bore gap, and the area of preceding fixed pedestal 41 is more than the access bore of ball valve 2 to be measured
Area, that is, cover the detection channel end of ball valve 2 to be measured.
Second promotes the axial length of body to be more than the first axial length for promoting body, and inflation cylinder body is arranged on preceding fixed base
Between seat 41 and rear fixed seat 51, as shown in figure 3, one end of inflation cylinder body is directly anchored on the preceding end face of fixed pedestal 41.Fill
Cylinder block includes an axially mounted pressurizing piston 11, pressurizing piston 11 through the rear center of fixed seat 51 and with drive device 3
Connection, make guide rod 12 by 6 plugs between rear fixed seat 51 and drive device 3 and drive device 3 connects, in the rear He of fixed seat 51
The bar of pressurizing piston 11 between the end of drive device 3 is provided with support spring 13, after one end of support spring 13 is positioned directly in
In fixed seat 51.
The structure of overvoltage protection mechanism 9 is as shown in figure 5, include the valve body of fixed pedestal 41 before being fixed on, provided with cunning in valve body
Block hole seat, sliding block hole seat is interior to be provided with switching sliding block 16, and one end of switching sliding block 16 is provided with back-moving spring 14, switches the another of sliding block 16
Over-pressed control passage is provided with the valve body of one end, over-pressed control passage and tracheae communicate；It is provided with valve body positioned at slider bore portions position
Pressure gauge passage and pressure release passage 15, switching sliding block 16 are provided with the isolating seal ring 17 of two pieces parallel arrangement, and two pieces isolation is close
The distance between seal ring 17 is more than distance between pressure gauge passage and pressure release passage 15.Voluntarily controlled and cut by pressure in tracheae 8
Changing the action of sliding block 16 makes tracheae 8 connect under safe pressure with pressure gauge 10 or be disconnected under overvoltage condition.
It is valve element closure state that the present embodiment, which selects a ball valve 2 to be measured, tests single-chamber.In use, drive end bearing bracket 4 and rear end cap 5
Keep pine to apply state and be introduced into one end Port detecting passage of ball valve 2 to be measured, connect by preceding fixed pedestal 41 and the end face of ball valve 2 to be measured
Carry out spacing, halt after touch；Under drive device effect, rear end cap 5 continues to move ahead to the direction of ball valve 2 to be measured, drive end bearing bracket 4
Simultaneously crush seal body 7 is expanded for fitting between rear end cap 5, whole end socket is sealed the inwall of ball valve 2 to be measured, as shown in figure 3, this
Process, pressurizing piston 11 are also and then advanced.After seal 7 and the inner hole wall of ball valve 2 to be measured sealing, make ball valve 2 to be measured by inspection one
Side ball valve inner chamber forms a sealing cavity.
Pressurizing piston 11 continues to move forward, and is pressurizeed into ball valve 2 to be measured, moves to bottom to pressurizing piston 11, referring to Fig. 4, makes
Ball valve 2 to be measured, which detects, forms a cavity for possessing certain pressure in the cavity of side, cavity can be monitored by pressure gauge 10
Interior air pressure change, so as to judge whether ball valve 2 to be measured has leakage.
Overvoltage protection mechanism 9 is for preventing in the progradation of pressurizing piston 11, and air pressure is excessive in ball valve 2 to be measured and damage is pressed
Power table 10, its running are as follows：
Original state is located on the left of sliding block hole seat as shown in figure 5, switching sliding block 16, now passes through two isolating seal rings 17
Buffer action, pressure gauge 10 is connected with tracheae 8, test pressure in the valve body of ball valve 2 to be measured.
When air pressure is excessive in the valve body of ball valve 2 to be measured, atmospheric pressure will by switching the over-pressed control passage in the left side of sliding block 16,
Switching sliding block 16 is promoted to move to right, back-moving spring 14 is extruded.
To be switched sliding block 16 is moved to right to when can not move, because two positions of isolating seal ring 17 change, pressure gauge 10
It is disconnected with tracheae 8, as shown in fig. 6, now, pressure gauge 10 is by pressure release passage 15 and atmosphere, so as to protect pressure gauge
10。
Let out and remove when the pressure in ball valve 2 to be measured, switching sliding block 16 is returned on the left of sliding block hole seat under the effect of back-moving spring 14
Position, pressure gauge 10 connect with tracheae 8 again, re-start test.
Above-described embodiment be to explanation of the present utility model, be not to restriction of the present utility model, it is any new to this practicality
Structure, method after the simple transformation of type belong to the scope of protection of the utility model.
Claims (6)
- A kind of 1. polyethylene ball valve air-tightness detection device, provided with connection drive device（3）Detection body（1）, it is characterized in that institute The detection body stated（1）Including the drive end bearing bracket by being parallel to each other（4）With preceding fixed pedestal（41）First formed promotes body, Yi Jiyou The rear end cap being parallel to each other（5）With rear fixed seat（51）Second formed promotes body；Sealing is provided between drive end bearing bracket and rear end cap Body（7）；First promotes body and second to promote body concatenation；Filling channel is provided with first promotion body（6）, first promotes body and second Promote in body and be provided with aerating device；Described aerating device includes inflation cylinder body and pressurizing piston（11）, before aerating device is located at Fixed pedestal（41）With rear fixed seat（51）Between；Described pressurizing piston（11）Through rear fixed seat（51）With drive device （3）Connection, rear fixed seat（51）Guide rod is beaten by plug（12）It is connected with drive device；The drive device is positioned at rear fixed seat On, pressurizing piston coordinates through rear fixed seat and inflation cylinder body inflates into valve body；Into ball valve to be measured（2）Access bore is With the end socket of its inner hole, the end socket is with gap fiting mode insertion valve body, when reaching defined position, in drive end bearing bracket and Under the opposing compression effect of rear end cap, seal is radially expanded, so as to seal ball valve to be measured（2）Endoporus, make ball to be measured A sealing cavity is formed in valve；Described filling channel（6）The upper air pressure drawn in tested cavity is to pressure gauge（10）, pass through Pressure gauge monitors the air pressure change in valve body.
- A kind of 2. polyethylene ball valve air-tightness detection device according to claim 1, it is characterized in that being drive end bearing bracket（4）'s Diameter and ball valve to be measured（2）One access bore gap coordinates, preceding fixed pedestal（41）Area be more than ball valve access bore to be measured Area.
- 3. a kind of polyethylene ball valve air-tightness detection device according to claim 1, it is characterised in that described pressurization is lived Plug（11）Towards drive device（3）One end be provided with support spring（13）, one end of support spring is positioned at rear fixed seat（51）On.
- 4. a kind of polyethylene ball valve air-tightness detection device according to claim 1, it is characterised in that described inflation is led to Road（6）Pass through tracheae（8）External pressure gauge（10）, tracheae is provided with overvoltage protection mechanism（9）.
- A kind of 5. polyethylene ball valve air-tightness detection device according to claim 4, it is characterised in that described overvoltage guarantor Protect mechanism（9）Including valve body, switching sliding block is provided with valve body（16）, pass through tracheae（8）Interior pressure voluntarily controls switching sliding block to move Work makes tracheae and pressure gauge（10）Connection disconnects.
- 6. a kind of polyethylene ball valve air-tightness detection device according to claim 5, it is characterised in that in described valve body Provided with pressure gauge passage and pressure release passage（15）, switch sliding block（16）One end be provided with back-moving spring（14）, switch and set on sliding block There is the isolating seal ring that two pieces is arranged in parallel（17）, the distance between two pieces isolating seal ring is more than pressure gauge passage and pressure release is led to Distance between road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720488688.1U CN206945240U (en) | 2017-05-04 | 2017-05-04 | A kind of polyethylene ball valve air-tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720488688.1U CN206945240U (en) | 2017-05-04 | 2017-05-04 | A kind of polyethylene ball valve air-tightness detection device |
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| CN206945240U true CN206945240U (en) | 2018-01-30 |
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| CN201720488688.1U Active CN206945240U (en) | 2017-05-04 | 2017-05-04 | A kind of polyethylene ball valve air-tightness detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507733A (en) * | 2018-07-09 | 2018-09-07 | 陈永杰 | A kind of leak test plant of natural gas ball valve |
| CN108844696A (en) * | 2018-07-09 | 2018-11-20 | 陈永杰 | A kind of gas tubular detection device |
| CN108871707A (en) * | 2018-08-22 | 2018-11-23 | 邹凯 | A kind of leakage detection apparatus of natural gas ball valve |
-
2017
- 2017-05-04 CN CN201720488688.1U patent/CN206945240U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507733A (en) * | 2018-07-09 | 2018-09-07 | 陈永杰 | A kind of leak test plant of natural gas ball valve |
| CN108844696A (en) * | 2018-07-09 | 2018-11-20 | 陈永杰 | A kind of gas tubular detection device |
| CN108507733B (en) * | 2018-07-09 | 2021-01-29 | 萍乡市燃气有限公司 | Leakage detection equipment of natural gas ball valve |
| CN108871707A (en) * | 2018-08-22 | 2018-11-23 | 邹凯 | A kind of leakage detection apparatus of natural gas ball valve |
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