CN208805350U - A kind of clamp system of flange form safety valve testing - Google Patents
A kind of clamp system of flange form safety valve testing Download PDFInfo
- Publication number
- CN208805350U CN208805350U CN201821079021.7U CN201821079021U CN208805350U CN 208805350 U CN208805350 U CN 208805350U CN 201821079021 U CN201821079021 U CN 201821079021U CN 208805350 U CN208805350 U CN 208805350U
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- China
- Prior art keywords
- safety valve
- clamping jaw
- clamp system
- gas transmission
- transmission axis
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Abstract
The utility model relates to testing device of safety valve more particularly to a kind of clamp systems of flange form safety valve testing, belong to the technical field of safety valve testing.A kind of clamp system for flange form safety valve testing, the mechanism include power mechanism, leading screw and nut mechanism, clip claw mechanism, the gas transmission axis of fixation, workbench and pressure feedback mechanism；The power mechanism, including decelerating motor, shaft and axially displaceable shaft coupling.The utility model has the advantages that: motor operation is used, structure is simple, easy to operate.
Description
Technical field
The utility model relates to testing device of safety valve more particularly to a kind of clamping machines of flange form safety valve testing
Structure belongs to the technical field of safety valve testing.
Background technique
Decompression protection device of the safety valve as pressure-bearing special equipment key, it is very widely used in modern industry, be
Guarantee the safe operation of pressure vessel, protect people's life and property safety, promote the development of national economy, according to " safety
Valve safety and technical supervision regulation " regulation, safety valve attachment should carry out periodic inspection system, and safety valve must at least verify every year
Once, that is, relieving characteristics when sealing performance and superpressure of the safety valve under its operating pressure are examined.In detection flange-interface
It when safety valve, needs to connect flange form safety valve to be measured with detection device, key technology is sealing.
Be easiest to expect and the encapsulating method implemented fixed by using screw bolt and nut, by manually installing and
To complete, not only large labor intensity, labor efficiency are low but also seal request is often not achieved for artificial process, need pressure release repeatedly for disassembly
It reconnects.
With the development of science and technology, safety valve detection sealing mechanism uses the side of cylinder and hydraulic cylinder as a source of power
Formula alleviates labor intensity, improves labor productivity, ensures the safety in sealing test to clamp and unclamp safety valve.
But cylinder and hydraulic cylinder is used all inevitably to there is respective defect as power: using cylinder as power often pressure
It is smaller, take gas, noise sound, at high cost, the larger safety valve detection work of not competent carrying pressure；Use hydraulic cylinder as dynamic
Power, not only system complex, high failure rate, equipment permeability, need periodic maintenance, but also need to occupy biggish space.
Summary of the invention
For above-mentioned shortcoming and defect of the existing technology, the purpose of this utility model is that: a kind of flange form is provided
The clamp system of safety valve testing, simple and ingenious structure, easy to maintain, clamping force is big, mechanism adjusts simplicity, has multiple peace
The clamp system of full guard；Power is provided with motor, and torque is switched to by screw body by the thrust or pulling force of straight line, thus
Clamping element is driven, safety valve to be detected is clamped in workbench；It is further provided with buffer spring, for buffering pushing away for screw rod
Power, so that the rising that thrust is more slow, to control it；And pressure feedback system is fed back for acquiring current clamping pressure
Onto digital indicator, when clamping pressure meets work requirements, motor stopping to save electric power, while can be avoided clamping
Pressure is excessive, damages safety valve.According to the transmission principle of leading screw and nut mechanism, the utility model can be there are two types of the kind of drive.
One of the purpose of this utility model is achieved in that a kind of clamp system for flange form safety valve testing,
The mechanism includes power mechanism 10, leading screw and nut mechanism 20, clip claw mechanism 30, fixed gas transmission axis 40, workbench 50 and pressure
Force feedback mechanism 70；The power mechanism 10, including decelerating motor 11, shaft 12 and axially displaceable shaft coupling 13；It is special
Sign is:
The gas transmission axis 40 inside sets hollow gas chamber, and top sets out mouth, and side sets entrance, top exit and safety valve 90
A gasket 60 is equipped between air inlet, verification pressure medium is inputted by entrance, from outlet output to 90 air inlet of safety valve
Mouthful；
The leading screw and nut mechanism 20, including elevating screw 21, the nut plate 22 of rotation stop and lifting joining beam 23；Elevating screw
21 by allowing the shaft coupling 13 of axial displacement to connect with the shaft 12 of decelerating motor 11；The nut plate 22 of rotation stop passes through connecting column
31 mechanism 30 is affixed with clamping jaw；
The clip claw mechanism 30, is made of clamping jaw 31 and clamping jaw seat 32；The clamping jaw seat 32 is fixed by lifting joining beam 23
In the nut plate 22 of rotation stop, the table top of the workbench 50 sets slot, and clamping jaw 31 stretches out workbench 50 from slot.
The gas transmission axis 40 is fixed in the table top bottom of workbench 50, and cooperates with the pilot hole of clamping jaw seat 32, makees clamping jaw
The axial displacement guiding of seat 32；Sliding slot and key are respectively equipped on clamping jaw seat 32 and gas transmission axis 40, the cooperation of the two keyway forms spiral shell
The rotation preventive mechanism 41 of stamper 22, but allow to slide axially；
Pressure feedback mechanism 70 is made of buffer spring 71 and pressure transmitter 72, and the two is fixedly connected up and down, then is fixed
It is connected to the bottom of gas transmission axis 40；21 top of elevating screw is contacted with 70 bottom of pressure feedback mechanism；
According to screw rod transmission principle, the rotary freedom of nut plate 22 is limited, elevating screw 21 carries out vertical after rotating
Movement is driven, nut plate 22 will do reversed fortune when 70 bottom of pressure feedback mechanism is arrived on the top of elevating screw 21 by reaction force
It is dynamic.
When work, machine shaft 12 drives elevating screw 21 to rotate, and pushes up on elevating screw 21, and pressure feedback mechanism 70 obtains
Pressure is shown on external digital display instrument by data line 73；Nut plate 22 drive 31 mechanism 30 of clamping jaw push, by safety valve 90 into
The flange 91 of port is pressed on the gasket 60 of workbench 50；When the clamping pressure shown on digital display instrument is enough, can stop
Motor work carries out the gas transmission verification of safety valve 90.After verification, motor reversal is controlled, clamping jaw 31 unclamps safety valve 90
Bottom inlet flange 91 can remove safety valve 90, to verify next time.
In addition, being additionally provided with stroke limiter 80, it is made of upper and lower two limit switches (81,82), is used to limit folder
The lifting travel of 31 mechanism 30 of pawl makes its displacement be no more than working range, to play the role of security protection and save electric power.
31 disk of clamping jaw of 31 mechanism 30 of clamping jaw is equipped with corresponding number in sliding slot equipped with 2 to 8 uniformly distributed radial grooves
Clamping jaw 31, clamping jaw 31 slide in slot, to adapt to the flange 91 of the safety valve 90 of different bores.
Buffer spring 71 uses disk spring.
Referring to Fig. 2, what the another object of the utility model was realized in: a kind of to verify for flange form safety valve 90
Clamp system, the mechanism include power mechanism 10, the shaft coupling 13 for allowing axial displacement, pressure feedback mechanism 70, feed screw nut
Mechanism 20, clip claw mechanism 30, liftable gas transmission axis 40 and workbench 50.
Liftable gas transmission axis 40 inside sets hollow gas chamber, and top sets out mouth, and side sets entrance, top exit and safety
Between 90 air inlet of valve be equipped with a gasket 60, verification use pressure medium, inputted by entrance, from outlet be input to safety valve 90 into
Port.
Power mechanism 10 includes decelerating motor 11 and shaft 12.
Leading screw and nut mechanism 20 includes elevating screw 21, fixed nut plate 22；Elevating screw 21 is by allowing axial position
The shaft coupling 13 of shifting is connect with the shaft 12 of decelerating motor 11；Fixed nut plate 22 connects by the way that connector and workbench 50 are fixed
It connects.
31 mechanism 30 of clamping jaw, center sets pilot hole, and is fixed on above workbench 50.
Gas transmission axis 40 is slidably matched with the pilot hole of clamping jaw seat 32；Gas transmission axis 40, bottom and pressure feedback mechanism 70 are fixed
Connection.
Pressure feedback mechanism 70 is made of buffer spring 71 and pressure transmitter 72, and the two is fixedly connected up and down, then is fixed
It is connected to the bottom of gas transmission axis 40.
According to screw rod transmission principle, nut plate 22 is fixed, and elevating screw 21 is in vertical motion after rotating.
When work, machine shaft 12 drives elevating screw 21 to rotate, and pushes up on elevating screw 21, and then pushes on gas transmission axis 40
Top, 90 flange in the bottom 91 of safety valve is held out against on clamping jaw 31, at this time 91 sealing surface of flange in the bottom of safety valve 90 and gas transmission axis
The gasket 60 at 40 tops forms the reliable sealed connection compressed.
Pressure feedback mechanism 70 between gas transmission axis 40 and screw rod obtains pressure, is shown to outside by data line 73
On digital display instrument；When the clamping pressure shown on digital display instrument is enough, motor work can be stopped, carrying out the gas transmission school of safety valve 90
It tests.After verification, motor reversal is controlled, clip claw mechanism 30 unclamps the bottom inlet flange 91 of safety valve 90, can remove peace
Full valve 90, to verify next time.
In addition, being additionally provided with stroke limiter 80, it is made of upper and lower two limit switches (81,82), is used to limit folder
The lifting travel of pawl mechanism 30 makes its displacement be no more than working range, to play the role of security protection and save electric power.
31 disk of clamping jaw of 31 mechanism 30 of clamping jaw is equipped with corresponding number in sliding slot equipped with 2 to 8 uniformly distributed radial grooves
Clamping jaw 31, clamping jaw 31 slide in slot, to adapt to the flange 91 of the safety valve 90 of different bores.
Buffer spring 71 uses disk spring.
The utility model has the advantages that: motor operation is used, structure is simple, easy to operate.
Detailed description of the invention
A kind of one structure chart of clamp system embodiment of flange form safety valve testing of Fig. 1 the utility model；
A kind of two structure chart of clamp system embodiment of flange form safety valve testing of Fig. 2 the utility model.
Specific embodiment
Embodiment 1:
A kind of for flange form safety valve 90, the clamp system of verification of the utility model 1, by power mechanism 10,
Leading screw and nut mechanism 20, clip claw mechanism 30, fixed gas transmission axis 40, workbench 50 and pressure feedback mechanism 70, referring to Fig. 1.
The power mechanism 10, including decelerating motor 11, shaft 12 and axially displaceable shaft coupling 13.
The gas transmission axis 40 inside sets hollow gas chamber, and top sets out mouth, and side sets entrance, top exit and safety valve 90
A gasket 60 is equipped between air inlet, verification pressure medium is inputted by entrance, from outlet output to 90 air inlet of safety valve
Mouthful；
The leading screw and nut mechanism 20, the nut plate 22 including elevating screw 21, rotation stop；Elevating screw 21 is by allowing axis
The shaft 12 of shaft coupling 13 and decelerating motor 11 to displacement is connect；The nut plate 22 of rotation stop passes through connecting column and 31 mechanism of clamping jaw
30 is affixed；
The clip claw mechanism 30, is made of clamping jaw 31 and clamping jaw seat 32；The table top of workbench 50 sets slot, and clamping jaw 31 is from slot
Stretch out workbench 50.
The gas transmission axis 40 is fixed in the table top bottom of workbench 50, and cooperates with the pilot hole of clamping jaw seat 32, makees clamping jaw
The axial displacement guiding of seat 32；Sliding slot and key are respectively equipped on clamping jaw seat 32 and gas transmission axis 40, the cooperation of the two keyway forms spiral shell
The rotation preventive mechanism 41 of stamper 22, but allow to slide axially；
Pressure feedback mechanism 70 is made of buffer spring 71 and pressure transmitter 72, and the two is fixedly connected up and down, then is fixed
It is connected to the bottom of gas transmission axis 40；21 top of elevating screw is contacted with 70 bottom of pressure feedback mechanism；
According to screw rod transmission principle, the rotary freedom of nut plate 22 is limited, elevating screw 21 carries out vertical after rotating
Movement is driven, nut plate 22 will do reversed fortune when 70 bottom of pressure feedback mechanism is arrived on the top of elevating screw 21 by reaction force
It is dynamic.
When work, machine shaft 12 drives elevating screw 21 to rotate, and pushes up on elevating screw 21, and pressure feedback mechanism 70 obtains
Pressure is shown on external digital display instrument by data line 73；Nut plate 22 drive 31 mechanism 30 of clamping jaw push, by safety valve 90 into
The flange 91 of port is pressed on the gasket 60 of workbench 50；When the clamping pressure shown on digital display instrument is enough, can stop
Motor work carries out the gas transmission verification of safety valve 90.After verification, motor reversal is controlled, clamping jaw 31 unclamps safety valve 90
Bottom inlet flange 91 can remove safety valve 90, to verify next time.
In addition, being additionally provided with stroke limiter 80, it is made of upper and lower two limit switches (81,82), is used to limit folder
The lifting travel of 31 mechanism 30 of pawl makes its displacement be no more than working range, to play the role of security protection and save electric power.
31 disk of clamping jaw of 31 mechanism 30 of clamping jaw is equipped with corresponding number in sliding slot equipped with 2 to 8 uniformly distributed radial grooves
Clamping jaw 31, clamping jaw 31 slide in slot, to adapt to the flange 91 of the safety valve 90 of different bores.Buffer spring 71 is using dish-shaped bullet
Spring.
Embodiment 2:
A kind of for flange form safety valve 90, the clamp system of verification, by power mechanism 10, screw rod of the utility model
Nut body 20,31 mechanism 30 of clamping jaw, liftable gas transmission axis 40, workbench 50 and pressure feedback mechanism 70.
Liftable gas transmission axis 40 inside sets hollow gas chamber, and top sets out mouth, and side sets entrance, top exit and safety
Between 90 air inlet of valve be equipped with a gasket 60, verification use pressure medium, inputted by entrance, from outlet be input to safety valve 90 into
Port.
Power mechanism 10 includes decelerating motor 11 and shaft 12.
Leading screw and nut mechanism 20 includes elevating screw 21, fixed nut plate 22；Elevating screw 21 is by allowing axial position
The shaft coupling 13 of shifting is connect with the shaft 12 of decelerating motor 11；Fixed nut plate 22 connects by the way that connector and workbench 50 are fixed
It connects.
31 mechanism 30 of clamping jaw, center sets pilot hole, and is fixed on above workbench 50.
Gas transmission axis 40 is slidably matched with the pilot hole of clamping jaw seat 32；Gas transmission axis 40, bottom and pressure feedback mechanism 70 are fixed
Connection.
Pressure feedback mechanism 70 is made of buffer spring 71 and pressure transmitter 72, and the two is fixedly connected up and down, then is fixed
It is connected to the bottom of gas transmission axis 40.
According to screw rod transmission principle, nut plate 22 is fixed, and elevating screw 21 is in vertical motion after rotating.
When work, machine shaft 12 drives elevating screw 21 to rotate, and pushes up on elevating screw 21, and then pushes on gas transmission axis 40
Top, 90 flange in the bottom 91 of safety valve is held out against on clamping jaw 31, at this time 91 sealing surface of flange in the bottom of safety valve 90 and gas transmission axis
The gasket 60 at 40 tops forms the reliable sealed connection compressed.
Pressure feedback mechanism 70 between gas transmission axis 40 and screw rod obtains pressure, is shown to outside by data line 73
On digital display instrument；When the clamping pressure shown on digital display instrument is enough, motor work can be stopped, carrying out the gas transmission school of safety valve 90
It tests.After verification, motor reversal is controlled, clip claw mechanism 30 unclamps the bottom inlet flange 91 of safety valve 90, can remove peace
Full valve 90, to verify next time.
In addition, being additionally provided with stroke limiter 80, it is made of upper and lower two limit switches (81,82), is used to limit folder
The lifting travel of pawl mechanism 30 makes its displacement be no more than working range, to play the role of security protection and save electric power.
31 disk of clamping jaw of 31 mechanism 30 of clamping jaw is equipped with corresponding number in sliding slot equipped with 2 to 8 uniformly distributed radial grooves
Clamping jaw 31, clamping jaw 31 slide in slot, to adapt to the flange 91 of the safety valve 90 of different bores.Buffer spring 71 is using dish-shaped bullet
Spring.
Claims (10)
1. a kind of clamp system for flange form safety valve testing, which includes power mechanism (10), feed screw nut's machine
Structure (20), clip claw mechanism (30), fixed gas transmission axis (40), workbench (50) and pressure feedback mechanism (70)；The power
Mechanism (10), including decelerating motor (11), shaft (12) and axially displaceable shaft coupling (13)；It is characterized by: the silk
Stem nut mechanism (20), including elevating screw (21), the nut plate (22) of rotation stop and lifting joining beam (23)；Elevating screw (21) is logical
Crossing allows the shaft coupling (13) of axial displacement to connect with the shaft (12) of decelerating motor (11)；The nut plate (22) of rotation stop passes through company
It connects column and clip claw mechanism (30) is affixed；
The clip claw mechanism (30), is made of clamping jaw (31) and clamping jaw seat (32)；The clamping jaw seat (32) passes through lifting joining beam
(23) it is fixed on the nut plate (22) of rotation stop, the table top of the workbench (50) sets slot, and clamping jaw (31) stretches out workbench from slot
(50)。
2. a kind of clamp system for flange form safety valve testing according to claim 1, it is characterised in that: described
Hollow gas chamber is set in gas transmission axis (40), top sets out mouth, and side sets entrance, between top exit and safety valve (90) air inlet
Equipped with a gasket (60), verification pressure medium is inputted by entrance, from outlet output to safety valve (90) air inlet.
3. a kind of clamp system for flange form safety valve testing according to claim 1 or 2, it is characterised in that:
The gas transmission axis (40) is fixed in the table top bottom of workbench (50), and cooperates with the pilot hole of clamping jaw seat (32), makees clamping jaw seat
(32) axial displacement guiding；Sliding slot and key, the cooperation of the two keyway, group are respectively equipped on clamping jaw seat (32) and gas transmission axis (40)
At the rotation preventive mechanism (41) of nut plate (22), but allow to slide axially.
4. a kind of clamp system for flange form safety valve testing according to claim 1 or 2, it is characterised in that:
Pressure feedback mechanism (70) is made of buffer spring (71) and pressure transmitter (72), and the two is fixedly connected up and down, then fixed company
It is connected to the bottom of gas transmission axis (40)；Elevating screw (21) top is contacted with pressure feedback mechanism (70) bottom.
5. a kind of clamp system for flange form safety valve testing according to claim 1 or 2, it is characterised in that:
Further include stroke limiter (80), is made of upper and lower two limit switches (81,82), is used to limit clip claw mechanism (30)
Lifting travel, make its displacement be no more than working range, thus play the role of security protection and save electric power.
6. a kind of clamp system for flange form safety valve testing according to claim 1 or 2, clip claw mechanism (30)
Clamping jaw seat (32) disk the clamping jaw (31) of corresponding number, clamping jaw (31) are equipped in sliding slot equipped with 2 to 8 uniformly distributed radial grooves
It is slided in slot, to adapt to the flange (91) of the safety valve (90) of different bores.
7. a kind of clamp system for flange form safety valve testing according to claim 1 or 2, buffer spring (71)
Using disk spring.
8. a kind of clamp system for flange form safety valve testing, which includes power mechanism (10), pressure feedback machine
Structure (70), leading screw and nut mechanism (20), clip claw mechanism (30), gas transmission axis (40) and workbench (50)；The gas transmission axis (40)
Using liftable structure, hollow gas chamber is set in axis, top sets out mouth, and side sets entrance, top exit and safety valve (90)
Between air inlet be equipped with a gasket (60), verification use pressure medium, inputted by entrance, from outlet be input to safety valve (90) into
Port；The gas transmission axis (40), is slidably matched with the pilot hole of clamping jaw seat (32)；The bottom of the gas transmission axis (40) and pressure are anti-
Feedback mechanism (70) is fixedly connected.
9. a kind of clamp system for flange form safety valve testing according to claim 8, it is characterised in that: also wrap
It includes stroke limiter (80), it is anti-that upper and lower two limit switches (81,82) of the stroke limiter (80) are mounted on pressure
Mechanism (70) side is presented, is used to limit the lifting travel of clip claw mechanism (30), its displacement is made to be no more than working range.
10. a kind of clamp system for flange form safety valve testing according to claim 8, it is characterised in that: institute
Clamping jaw seat (32) is stated to be mounted on the table top of workbench (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821079021.7U CN208805350U (en) | 2018-07-09 | 2018-07-09 | A kind of clamp system of flange form safety valve testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821079021.7U CN208805350U (en) | 2018-07-09 | 2018-07-09 | A kind of clamp system of flange form safety valve testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208805350U true CN208805350U (en) | 2019-04-30 |
Family
ID=66228584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821079021.7U Expired - Fee Related CN208805350U (en) | 2018-07-09 | 2018-07-09 | A kind of clamp system of flange form safety valve testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208805350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553817A (en) * | 2019-10-22 | 2019-12-10 | 中国计量大学 | Non-smooth wall friction resistance testing arrangement based on it is underwater |
-
2018
- 2018-07-09 CN CN201821079021.7U patent/CN208805350U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553817A (en) * | 2019-10-22 | 2019-12-10 | 中国计量大学 | Non-smooth wall friction resistance testing arrangement based on it is underwater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190430 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |