CN107091258B - A kind of hydraulic device for fast detecting of semi-automatic ball valve - Google Patents
A kind of hydraulic device for fast detecting of semi-automatic ball valve Download PDFInfo
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- CN107091258B CN107091258B CN201710301945.0A CN201710301945A CN107091258B CN 107091258 B CN107091258 B CN 107091258B CN 201710301945 A CN201710301945 A CN 201710301945A CN 107091258 B CN107091258 B CN 107091258B
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- ball valve
- pressure
- firm banking
- semi
- fast detecting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Earth Drilling (AREA)
Abstract
The present invention discloses a kind of hydraulic device for fast detecting of semi-automatic ball valve, belong to ball valve hydraulic detection device field, the device includes two compacting sealing mechanisms, two pressure detectors, two handle rotating mechanisms, two firm bankings, two drainpipes, Liang Ge gas-liquid pressure-boosting mechanism, two groups of pressure switching mechanisms, two groups of switch buttons, one text display and PLC control system, it is characterized in that described two compacting sealing mechanisms, two pressure detectors, two handle rotating mechanisms, two firm bankings, two drainpipes, Liang Ge gas-liquid pressure-boosting mechanism, two groups of pressure switching mechanisms and two groups of switch buttons are symmetrically installed, each group can individually carry out the hydraulic performance detection of ball valve.High degree of automation of the present invention can detect multiple specification ball valves, and easy to operate, use is safe, and single ball valve detection time is 150s, and detection efficiency is high, reduce inspectoral working strength.
Description
Technical field
The present invention relates to a kind of ball valve hydraulic detection device, especially a kind of hydraulic device for fast detecting of semi-automatic ball valve.
Background technique
Ball valve is mainly used to make the flow direction for cutting off, distributing and changing liquid or gas medium in pipeline, it is only needed
It can be closed tightly with the rotating torque of the operation and very little that are rotated by 90 °.But if sealing property of ball valves is poor, even if closing
Under the situation of ball valve, medium will overflow in pipeline.When medium is liquid, liquid can ooze out outward along ball valve, not only unrestrained
Take resource, influence the beauty of ambient enviroment, the sound that liquid flows to ground can also cause noise to perplex user；When medium is
When gas overflowing, then it can jeopardize the personal safety of user.So ball valve signal detecting is most important in ball valve production process
A procedure.
And current ball valve hydraulic detection device is mostly manual hand manipulation, and ball valve is put into device, manually adjusts pressure
Tight screw rod compresses ball valve, is then turned on pressure testing motor, opens valve and fills the water into ball valve, and opens drain valve, when having in drain valve
When water flows out, drain valve is turned off, then manually adjust test pressure, then can be manually rotated ball valve handle, usual each test pressure
Lower handle need to rotate 10 times, simulate the multiple switching movement of ball valve in use.To keep ball valve hydraulic performance result true
It is real, when being detected, hydraulic performance situation of the ball valve under 4 pressure need to be detected, so needing hand when manually detecting
It is dynamic to adjust test pressure 4 times, rotation ball valve handle 40 times manually.This manual mode of operation in the case where employee's skilled operation about
It needs 8 minutes, working efficiency is low, and operating process is cumbersome, labor intensity is big, does not meet the demand of rapid industrial development.
Summary of the invention
In order to solve the problems existing in the prior art, the present invention proposes a kind of hydraulic device for fast detecting of semi-automatic ball valve.
Used technical solution is the present invention in order to solve the problems existing in the prior art：A kind of semi-automatic ball valve is hydraulic fast
Speed detector, including monitor station, main support, side stand and PLC control system, the main support and side stand are mounted on detection
Platform, it is described collateral to be erected at main support rear；
The main support is equipped with pressure detector, electric cabinet and text display, the electric cabinet and text display
It is connected, the text display is provided with PLC control system, sets that there are two the compression being parallel to each other sealings on the inside of the main support
Mechanism, the compacting sealing mechanism pass perpendicularly through main support, and the compacting sealing mechanism tail end is equipped with pressed seat, the monitor station
The firm banking there are two different size is set with the mutual corresponding position of pressed seat, the firm banking includes the first firm banking
With the second firm banking, the firm banking is mounted on monitor station, and drainpipe, the detection are equipped with below the firm banking
It is additionally provided with switch fixing seat on platform, the switch fixing seat is equipped with switch button, and the switch button includes start button, temporarily
Stop button and emergency stop switch；
The side stand is equipped with handle rotating mechanism；
It is equipped with gas-liquid pressure-boosting mechanism and pressure switching mechanism below the monitor station and the two is connected with each other, the gas-liquid
Booster body and pressure switching mechanism are connected with compacting sealing mechanism, the pressure detector respectively with compacting sealing mechanism and
Pressure switching mechanism is connected.
Preferably, the compacting sealing mechanism, pressure detector, handle rotating mechanism, drainpipe, gas-liquid pressure-boosting mechanism,
Pressure switching mechanism and switch button are divided to two groups to be symmetrically installed, and first firm banking and the second firm banking are symmetrically installed.
Preferably, first firm banking includes limiting slot, snap ring and fixing bolt, is set on first firm banking
There are several limiting slots, the limiting slot is evenly distributed on the first firm banking by the center of circle of the center of the first firm banking, institute
The inside for stating limiting slot is equipped with snap ring, and the snap ring inner wall is equipped with anti-slip rubber, and the limiting slot is equipped with fixing bolt.Institute
It states limiting slot and can move through fixing bolt on the first firm banking and fix.
Preferably, the pressure switching mechanism includes several solenoid valves and several pressure regulator valves, and the solenoid valve is and pressure regulation
Valve is corresponded and is connected with each other.
Preferably, the handle rotating mechanism includes cylinder, ball valve rod and connector sleeve, and the ball valve rod tail end is equipped with connection
Set, the ball valve rod are connected by connector sleeve with the connecting pin of cylinder.
Preferably, exhaust solenoid valve, water inlet pipe and inlet water solenoid valve, the drainpipe and first are equipped in the pressed seat
The position of firm banking and the connection of the second firm banking is equipped with drain solenoid valve.
Preferably, the compacting sealing mechanism is hydraulic cylinder.
Preferably, the specification limit of the mountable ball valve of the firm banking is D20-D110.
By the text display to two groups of environment division actuation times, rotatable handle number, suppress pressure and divide
It opens or concurrently sets.Each ball valve detects the pressure value of multiple and different grades automatically when detecting, and detection ordering is from low to high.
When ball valve starts to suppress, the handle Knob mechanisms rotate the number of setting automatically, are actually made with simulating ball valve
It is acted with multiple switching in the process；After the completion of rotation, pressure switching mechanism automatically switches next pressure rating, and passes through institute
Stating gas-liquid pressure-boosting mechanism and increasing admission pressure automatically makes pressure reach detection pressure value.
As long as being put into ball valve, start button is pressed, the semi-automatic hydraulic device for fast detecting of ball valve is controlled by the PLC
System processed executes compression automatically, exhaust, water filling, draining, adjusts the sequence of operations such as detection pressure value, rotational handle.
The operation principle of the present invention is that：
Hydraulic pressure is suppressed：The principle of tap water boosting can be passed through control gas-liquid pressure-boosting mechanism using gas-liquid pressure-boosting mechanism
Admission pressure adjusts system hydraulic pressure.
Hydraulic compression：Ball valve is compressed using Pneumatic hydraulic booster body, is adjusted by control admission pressure and compresses sealing
The pressure of mechanism.
Operating process of the invention is as follows：
A kind of semi-automatic hydraulic device for fast detecting of ball valve of the invention is divided into two groups of independent operatings of A, B, and each group is using double
Button starting, is equipped with two start buttons, a pause button, an emergency stop switch.Power supply in closure electric cabinet is opened
It closes, equipment is operated by button and switch.
The corresponding four detections pressure rating of four solenoid valve blocks, suppressed time, handle rotation are set in text display
After turning number, ball valve is put into firm banking, both hands press two start buttons simultaneously；The semi-automatic hydraulic quick detection dress of ball valve
It sets, automatically begins to the step of setting by PLC program operation；
Operational process：Ball valve is compressed and is sealed downwards by compacting sealing mechanism, and exhaust solenoid valve is opened, and is emptied empty in ball valve
After gas, gas-liquid pressure-boosting mechanism starts and opens solenoid valve and starts to suppress, and handle rotating mechanism rotates automatically, and pressure at this time is perseverance
Definite value, and pressure in ball valve can be observed by pressure detector.Handle rotating mechanism number of revolutions stops turning after reaching setting value
It is dynamic.When the constant time of this pressure in ball valve reaching the suppressed time of setting, pressure switching mechanism automatically switches pressure rating
And start to suppress, after pressure reaches second pressure rating of setting, handle Knob mechanisms rotate automatically again, so until setting
Fixed pressure rating all suppresses completion.At this point, exhaust solenoid valve is opened, moisture content is remained in automatic-discharging ball valve.Compress sealing
Ball valve unclamps upwards in mechanism, and the semi-automatic hydraulic device for fast detecting of ball valve then automatically restores to original state.It so completes primary
The signal detecting of ball valve works.
In equipment running process, pause button, device operation suspension are pressed, whether observable ball valve has infiltration, leak existing
As both hands press starting double-button again, and device then automatically continues and completes remaining step.
In equipment running process, emergency stop switch is pressed, equipment returns to original state.
Beneficial effects of the present invention：
(1) the hydraulic device for fast detecting of semi-automatic ball valve of the invention is easy to operate, as long as being put into ball valve, press starting by
Button, device can automatic impaction, automatic water filling, Auto-drainage, automatic adjustment multiple range pressures test, and rotate hand automatically
Handle, high degree of automation can detect the ball valve of multiple specifications within the scope of D20-D110, and single ball valve suppressed time is can be controlled in
Within 150 seconds, working efficiency is increased dramatically.
(2) the hydraulic device for fast detecting of semi-automatic ball valve of the invention can detect 2 ball valves, detection process respectively simultaneously
Independently of each other, it does not interfere with each other, further improves the intelligence of working efficiency and device.
(3) the hydraulic device for fast detecting of semi-automatic ball valve of the invention, double unique designs released the button promote operator
Member must both hands operate simultaneously, avoid the maloperation of operator, ensure that the safety in utilization of device.
Detailed description of the invention
Fig. 1 is a kind of stereoscopic schematic diagram of semi-automatic hydraulic device for fast detecting of ball valve；
Fig. 2 is a kind of hydraulic device for fast detecting main view of semi-automatic ball valve；
Fig. 3 is a kind of hydraulic device for fast detecting side view of semi-automatic ball valve；
Fig. 4 is a kind of hydraulic device for fast detecting top view of semi-automatic ball valve；
Fig. 5 is the structural schematic diagram of firm banking；
Fig. 6 is a kind of hydraulic device for fast detecting schematic diagram of semi-automatic ball valve.
1- compacting sealing mechanism, 2- pressure detector, 3- handle rotating mechanism, 31- cylinder, 32- ball valve rod, 33- connection
Set, 4- firm banking, 41- limiting slot, 42- fixing bolt, 5- drainpipe, 6- gas-liquid pressure-boosting mechanism, 7- pressure switching mechanism, 8-
Switch button, 81- start button, 82- pause button, 83- emergency stop switch, 9- text display, 10- main support, 11- are collateral
Frame, 12- switch fixing seat, 13- monitor station, 14- major diameter ball valve, 15- minor diameter ball valve, 16- pressed seat, 17- power supply line.
Specific embodiment
Now in conjunction with attached drawing and embodiment, the present invention will be further described.
As shown in Figs 1-4, a kind of hydraulic device for fast detecting of semi-automatic ball valve, including monitor station 13, main support 10 are collateral
Frame 11 and PLC control system, the main support 10 and side stand 11 are mounted on monitor station 13, and the side stand 11 is located at main support
10 rears；
The main support 10 is equipped with pressure detector 2, electric cabinet and text display 9, and the electric cabinet and text are aobvious
Show that device 9 is connected, the text display 9 is provided with PLC control system, sets that there are two be parallel to each other on the inside of the main support 10
Compacting sealing mechanism 1, the compacting sealing mechanism 1 pass perpendicularly through main support 10, and 1 tail end of compacting sealing mechanism, which is equipped with, to be compressed
Seat, the monitor station 13 set the firm banking 4 there are two different size, the fixed bottom with the mutual corresponding position of pressed seat 16
Seat 4 includes the first firm banking and the second firm banking, and the firm banking 4 is mounted on monitor station 13, the firm banking 4
Lower section is equipped with drainpipe 5, and switch fixing seat 12 is additionally provided on the monitor station 13, and the switch fixing seat 12 is equipped with switch and presses
Button 8, the switch button include start button 81, pause button 82 and emergency stop switch 83；
The side stand 11 is equipped with handle rotating mechanism 3；
It is equipped with gas-liquid pressure-boosting mechanism 6 and pressure switching mechanism 7 below the monitor station 13 and the two is connected with each other, it is described
Gas-liquid pressure-boosting mechanism 6 and pressure switching mechanism 7 are connected with compacting sealing mechanism 1, and the pressure detector 2 is close with compression respectively
Sealing mechanism 1 is connected with pressure switching mechanism 7.
The compacting sealing mechanism 1, pressure detector 2, handle rotating mechanism 3, drainpipe 5, gas-liquid pressure-boosting mechanism 6, pressure
Power switching mechanism 7 and switch button 8 are divided to two groups to be symmetrically installed, and first firm banking and the second firm banking are symmetrically installed,
Each group can individually carry out the hydraulic performance detection of ball valve.
As shown in figure 5, first firm banking includes limiting slot 41, snap ring and fixing bolt 42, described first is fixed
Pedestal is equipped with several limiting slots 41, and the limiting slot 41 is evenly distributed in first as the center of circle using the center of the first firm banking and consolidates
Determine on pedestal, the inside of the limiting slot 41 is equipped with snap ring, and the snap ring inner wall is equipped with anti-slip rubber, on the limiting slot 41
Equipped with fixing bolt 42.It is fixed that the limiting slot 41 can move through fixing bolt 42 on the first firm banking.
The pressure switching mechanism 7 include several solenoid valves and several pressure regulator valves, the solenoid valve with pressure regulator valve one by one
It corresponds to and is connected with each other.
The handle rotating mechanism 3 includes cylinder 31, ball valve rod 32 and connector sleeve 33, and 32 tail end of ball valve rod, which is equipped with, to be connected
Female connector 33, the ball valve rod 32 are connected by connector sleeve 33 with the connecting pin of cylinder 31.
Exhaust solenoid valve, water inlet pipe and inlet water solenoid valve are equipped in the pressed seat 16, the drainpipe 5 and first is fixed
The position of pedestal and the connection of the second firm banking is equipped with drain solenoid valve.
The compacting sealing mechanism 1 is hydraulic cylinder.
The specification limit of the mountable ball valve of the firm banking 4 is D20-D110.
By the text display 9 to two groups of environment division actuation times, rotatable handle number, suppress pressure and divide
It opens or concurrently sets.Each ball valve detects the pressure value of multiple and different grades automatically when detecting, and detection ordering is from low to high.
When ball valve starts to suppress, the handle Knob mechanisms rotate the number of setting automatically, are actually made with simulating ball valve
It is acted with multiple switching in the process；After the completion of rotation, pressure switching mechanism 7 automatically switches next pressure rating, and passes through
The gas-liquid pressure-boosting mechanism 6 increases admission pressure automatically makes pressure reach detection pressure value.
As long as being put into ball valve, start button 81 is pressed, the semi-automatic hydraulic device for fast detecting of ball valve passes through the PLC
Control system executes compression automatically, exhaust, water filling, draining, adjusts the sequence of operations such as detection pressure value, rotational handle.
The operation principle of the present invention is that：
Hydraulic pressure is suppressed：It can be by the principle of tap water boosting, by controlling gas-liquid pressure-boosting mechanism 6 using gas-liquid pressure-boosting mechanism 6
Admission pressure adjust system hydraulic pressure.
Hydraulic compression：Ball valve is compressed using Pneumatic hydraulic booster body, is adjusted by control admission pressure and compresses sealing
The pressure of mechanism 1.
Operating process of the invention is as follows：
A kind of semi-automatic hydraulic device for fast detecting of ball valve of the invention is divided into two groups of independent operatings of A, B, and each group is using double
Button starting, is equipped with the emergency stop switch 83 of pause button 82, one of two start buttons 81, one.
As shown in fig. 6, the semi-automatic hydraulic device for fast detecting of ball valve then automatically begins to the step of setting by PLC program fortune
Row；
The corresponding four detections pressure of four solenoid valves is arranged in the power switch being closed in electric cabinet in text display 9
Power grade is respectively 0.6Mpa, 1.0Mpa, 1.5Mpa, 2.4Mpa, will after suppressed time 10s, rotatable handle number are 10 times
Ball valve is put into firm banking 4, and both hands press two start buttons 81 simultaneously.The semi-automatic hydraulic device for fast detecting of ball valve is then automatic
Start the step of setting by PLC program operation.
Operational process：Compacting sealing mechanism 1 compresses downwards ball valve, and exhaust solenoid valve is opened and empties air in ball valve
Afterwards, gas-liquid pressure-boosting mechanism 6 starts and opens solenoid valve, starts to suppress, and detecting pressure at this time is 0.6Mpa, handle rotating mechanism 3
Automatic rotation 10 times, pressure at this time is steady state value, and can be by pressure in ball valve in 2 observing system of pressure detector
0.6MPa.Handle rotating mechanism 3 stops operating after rotating 10 times, and after suppressing the time of 10s under the pressure of 0.6Mpa, pressure is cut
Structure 7 of changing planes automatically switches next pressure rating and starts to suppress, and pressure at this time is 1.0MPa, handle Knob mechanisms again from
Dynamic rotation 10 times, after the 10s time is suppressed under the pressure of 1.0Mpa, pressure switching mechanism 7 automatically switches next pressure rating
And start to suppress, pressure at this time is 1.5Mpa, so until the pressure rating of setting all suppresses completion.At this point, exhaust electricity
Magnet valve is opened, and moisture content is remained in automatic-discharging ball valve.Compacting sealing mechanism 1 unclamps ball valve upwards, and device then automatically restores to just
Beginning state.The signal detecting for so completing a ball valve works, and detection time about 150 seconds.
In equipment running process, pause button 82, device operation suspension are pressed, whether observable ball valve has infiltration, leak
Phenomenon, both hands press starting double-button again, and device then automatically continues and completes remaining step.
In equipment running process, emergency stop switch 83 is pressed, equipment returns to original state.
Claims (7)
1. a kind of hydraulic device for fast detecting of semi-automatic ball valve, including monitor station (13), main support (10), side stand (11) and
PLC control system, it is characterised in that：The main support (10) and side stand (11) are mounted on monitor station (13), the side stand
(11) it is located at main support (10) rear；
The main support (10) is equipped with pressure detector (2), electric cabinet and text display (9), the electric cabinet respectively with
Text display (9), switch button (8) are connected, and the text display (9) is provided with PLC control system, the main support
(10) inside is set there are two the compacting sealing mechanism (1) being parallel to each other, and the compacting sealing mechanism (1) passes perpendicularly through main support
(10), compacting sealing mechanism (1) tail end is equipped with pressed seat (16), and the monitor station (13) corresponds to each other with pressed seat (16)
Position set the firm banking (4) there are two different size, the firm banking (4) includes that the first firm banking and second are fixed
Pedestal, the firm banking (4) are mounted on monitor station (13), are equipped with drainpipe (5) below the firm banking (4), described
Switch fixing seat (12) is additionally provided on monitor station (13), the switch fixing seat (12) is equipped with switch button (8), the switch
Button includes start button (81), pause button (82), emergency stop switch (83)；
The side stand (11) is equipped with handle rotating mechanism (3)；
It is equipped with gas-liquid pressure-boosting mechanism (6) and pressure switching mechanism (7) below the monitor station (13) and the two is connected with each other, institute
It states gas-liquid pressure-boosting mechanism (6) and pressure switching mechanism (7) is connected with compacting sealing mechanism (1), the pressure detector (2) point
It is not connected with compacting sealing mechanism (1) and pressure switching mechanism (7).
2. a kind of semi-automatic hydraulic device for fast detecting of ball valve according to claim 1, it is characterised in that：The compression is close
Sealing mechanism (1), pressure detector (2), handle rotating mechanism (3), drainpipe (5), gas-liquid pressure-boosting mechanism (6), pressure switching machine
Structure (7) and switch button (8) are divided to two groups to be symmetrically installed, and first firm banking and the second firm banking are symmetrically installed.
3. a kind of semi-automatic hydraulic device for fast detecting of ball valve according to claim 1, it is characterised in that：Described first is solid
Determining pedestal includes limiting slot (41), snap ring and fixing bolt (42), and first firm banking is equipped with several limiting slots (41),
The limiting slot (41) is evenly distributed on the first firm banking by the center of circle of the center of the first firm banking, the limiting slot
(41) inside is equipped with snap ring, and the snap ring inner wall is equipped with anti-slip rubber, and the limiting slot (41) is equipped with fixing bolt
(42), it is fixed can to move through fixing bolt (42) on the first firm banking for the limiting slot (41).
4. the hydraulic device for fast detecting of semi-automatic ball valve according to claim 1, it is characterised in that：The pressure switching machine
Structure (7) includes several solenoid valves and several pressure regulator valves, and the solenoid valve is corresponded and is connected with each other with pressure regulator valve.
5. the hydraulic device for fast detecting of semi-automatic ball valve according to claim 1, it is characterised in that：The rotatable handle machine
Structure (3) includes cylinder (31), ball valve rod (32) and connector sleeve (33), and ball valve rod (32) tail end is equipped with connector sleeve (33), institute
Ball valve rod (32) are stated to be connected by connector sleeve (33) with the connecting pin of cylinder (31).
6. the hydraulic device for fast detecting of semi-automatic ball valve according to claim 1, it is characterised in that：The pressed seat (16)
It is interior to be equipped with exhaust solenoid valve, water inlet pipe and inlet water solenoid valve, the drainpipe (5) and the first firm banking and the second firm banking
The position of connection is equipped with drain solenoid valve.
7. the hydraulic device for fast detecting of semi-automatic ball valve according to claim 1, it is characterised in that：The compression sealer
Structure (1) is hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301945.0A CN107091258B (en) | 2017-05-02 | 2017-05-02 | A kind of hydraulic device for fast detecting of semi-automatic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301945.0A CN107091258B (en) | 2017-05-02 | 2017-05-02 | A kind of hydraulic device for fast detecting of semi-automatic ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN107091258A CN107091258A (en) | 2017-08-25 |
| CN107091258B true CN107091258B (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710301945.0A Active CN107091258B (en) | 2017-05-02 | 2017-05-02 | A kind of hydraulic device for fast detecting of semi-automatic ball valve |
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| CN (1) | CN107091258B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643175A (en) * | 2017-10-31 | 2018-01-30 | 无锡唯勒科技有限公司 | Noresidue ball-valve dedicated detection means |
| CN109029331B (en) * | 2018-05-28 | 2023-12-22 | 无锡格林司通自动化设备股份有限公司 | Rotary cylinder inspection machine |
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| US5345812A (en) * | 1992-06-24 | 1994-09-13 | Eastman Kodak Company | Seal leakage monitoring device and method |
| CN206830572U (en) * | 2017-05-02 | 2018-01-02 | 湖南中财化学建材有限公司 | A kind of semi-automatic ball valve hydraulic pressure device for fast detecting |
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- 2017-05-02 CN CN201710301945.0A patent/CN107091258B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859492Y (en) * | 2005-11-22 | 2007-01-17 | 河北建支铸造集团有限公司 | Multiheaded automatic multifunctional tube pressure testing machine |
| CN101266188A (en) * | 2008-05-07 | 2008-09-17 | 常州市科信燃气设备有限公司 | Disc valve detection device |
| CN201335777Y (en) * | 2008-11-19 | 2009-10-28 | 华北电力大学（保定） | Safety valve on-line adjusting system |
| CN202066652U (en) * | 2011-03-30 | 2011-12-07 | 南塑建材塑胶制品（深圳）有限公司 | Air pressure type detecting device for sealing property of ball valves |
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