CN204228400U - A kind of safety valve on-line testing device - Google Patents
A kind of safety valve on-line testing device Download PDFInfo
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- CN204228400U CN204228400U CN201420725959.7U CN201420725959U CN204228400U CN 204228400 U CN204228400 U CN 204228400U CN 201420725959 U CN201420725959 U CN 201420725959U CN 204228400 U CN204228400 U CN 204228400U
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- safety valve
- valve rod
- securing member
- valve
- lifting arm
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Abstract
The utility model provides a kind of on-line check method for safety valve and device, comprises force snesor, lifting arm, it is characterized in that: also comprise displacement transducer and securing member, and securing member is fixed on the valve rod of safety valve; Also be included in the fixed support arranged of safety valve above, force snesor is arranged on lifting arm, and this lifting arm bottom connects securing member and is flexibly connected with fixed support; Displacement transducer and force snesor utilize wire to be connected with control system, in hoisting depth and the opening time of control system setting valve rod, complete verification before making slip arrival safety valve valve port.Thus avoid viscous medium discharge in flash evaporator to affect safety valve sealing property, thus the work period of flash evaporator can be extended, the dismounting of safety valve in off-line checking procedure, lifting, transport, verification, the cost returned in the series of tasks processes such as dress can be saved, reduce the labour intensity of workman, the normal work running of guarantee company.
Description
[technical field]
The utility model relates to a kind of safety valve checking method and device, is specifically related to on-line testing method and the device of the safety valve of flash evaporator slip flow process in a kind of alumina leaching system.
[background technology]
The production method of aluminium oxide has acid system, alkaline process and Re Fa.Current aluminum oxide industry production practical application be alkaline process.Alkaline process comprises again Bayer process, sintering process and various forms of combination method.Because Bayer process production cost is low, good in economic efficiency, flow process is relatively simple, most widely used.
Bayer process is produced and is divided into stripping, decomposition and calcining three phases, comprises broken and wet-milling, bauxite stripping, red-mud separation and washing, sodium aluminate solution seed addition decompose, aluminium decomposition nut liquid evaporates, sodium carbonate in aluminum oxide production causticization reclaims, aluminium hydroxide calcining and other processes.
For the safety valve of the flash evaporator of the force container of alumina leaching system, adopt off-line verification mode at present, namely under Parking condition, safety valve is separated production line, checking table verifies.Annual dismounting, about 4800 man-hours of operation input manpower such as maintenance verification, installation etc., direct material loss about more than 120,000 yuan; And the spare part order cycle of safety valve is very long, once occur that in unloading process damage will affect normal production.
[utility model content]
For the variety of problems faced described in background technology, the purpose of this utility model is to provide a kind of on-line check method for safety valve for flash evaporator flow process and device, it is by changing checking parameter, control safety valve valve rod opening time and hoisting depth, avoid viscous medium in flash evaporator to discharge and affect safety valve sealing property, thus safety valve on-line testing can be realized.
For achieving the above object, the technical scheme that the utility model adopts is as follows: comprise force snesor, lifting arm, it is characterized in that: also comprise displacement transducer and securing member, and securing member is fixed on the valve rod of safety valve; Also be included in the fixed support arranged of safety valve above, force snesor is arranged on lifting arm, and this lifting arm bottom connects securing member and is flexibly connected with fixed support; Displacement transducer and force snesor utilize wire to be connected with control system, in hoisting depth and the opening time of control system setting valve rod, complete verification before making slip arrival safety valve valve port.
During verification, valve rod is risen to the hoisting depth 0.2-2mm of setting by lifting arm in the opening time 0.5-2S of setting by securing member, measured the pulling force of valve rod by force snesor, is measured the hoisting depth of valve rod by displacement transducer.
Control system is made up of computing machine and motor.
This securing member comprises nut, pad and locking cap, and the wide cut of locking cap is greater than nut relatively; Locking cap is embedded on valve rod, and prevents locking cap prolapse upwards by nut and valve rod bolt, and pad is located between locking cap and nut.
This securing member comprises its center and is provided with the lock nut that the clamping head that its profile of Set and Positioning hole matched with valve rod external diameter is taper, the gripping sleeve with the taper hole mated with clamping head tapered profile and wide cut be greater than gripping sleeve, and clamping head is put into the taper hole of gripping sleeve and is enclosed within valve rod correct position; Lock nut is connected by threaded engagement with gripping sleeve, under the interaction of screw thread, promotes clamping head and moves to taper hole small end, and under the effect of the gripping sleeve conical surface, generation distortion is shunk to axis and clamps valve rod by clamping head.
Many retraction slots are offered longitudinally at clamping head conical surface.
Angle between the conical surface of gripping sleeve taper hole and axis is 8 degree.
Effect of the present utility model is: be steam according to the medium top in flash evaporator, bottom is the operational characteristic of slip, by changing checking parameter, control safety valve valve rod opening time and hoisting depth, avoid viscous medium in flash evaporator to discharge and affect safety valve sealing property, thus safety valve on-line testing can be realized, the realization of on-line testing can extend the work period of flash evaporator, the dismounting of safety valve in off-line checking procedure can be saved, lifting, transport, verification, return the cost in the series of tasks such as dress process, reduce the labour intensity of workman, the normal work running of guarantee company.
Your juror all can there be further understanding and understanding to the purpose of this utility model, shape, structure, feature and effect thereof for ease of, and elaborate in conjunction with the embodiments.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram of the utility model first embodiment;
Fig. 3 is the sectional view of the utility model second embodiment clamping head;
Fig. 4 is the sectional view of the utility model second embodiment gripping sleeve;
Fig. 5 is the sectional view of the utility model second embodiment lock nut.
The drawing reference numeral of embodiment illustrates:
| Displacement transducer 1 | Force snesor 2 | Lifting arm 3 |
| Hoisting frame 31 | Securing member 4 | Nut 41 |
| Pad 42 | Locking cap 43 | Clamping head 44 |
| Retraction slot 441 | Gripping sleeve 45 | Taper hole 451 |
| Lock nut 46 | Control system 5 | Safety valve 6 |
| Valve rod 61 | Fixed mount 7 |
[embodiment]
Below in conjunction with the drawings and specific embodiments, a kind of on-line check method for safety valve of the utility model and device are described further.
Refer to Fig. 1 and Fig. 2, for the first embodiment of a kind of safety valve on-line testing of the utility model device, it comprises displacement transducer 1, force snesor 2, lifting arm 3 and securing member 4, displacement transducer 1 and force snesor 2 utilize wire to be connected with control system 5, and this control system 5 is made up of computing machine and motor.
The valve rod 61 of safety valve 6 is provided with external thread.
Securing member 4 comprises nut 41, pad 42 and locking cap 43, and the wide cut of locking cap 43 is greater than nut 41 relatively.Locking cap 43 is embedded in the external thread place of valve rod 61, and prevents locking cap 43 prolapse upwards by nut 41 and valve rod 61 bolt, and pad 42 is located between locking cap 43 and nut 41.
On safety valve 6, arrange fixed support 7, displacement transducer 1 is arranged on the side lever of fixed support 7, and lifting arm 3 is movably connected on the cross bar on fixed support 7 top, and force snesor 2 is arranged on lifting arm 3.
Lifting arm 3 bottom is provided with hoisting frame 31, hoisting frame 31 support the locking cap 43 of touch fastener 4.
Refer to Fig. 1 and Fig. 3 to Fig. 5, be the second embodiment of a kind of safety valve on-line testing of the utility model device, it comprises displacement transducer 1, force snesor 2, lifting arm 3 and securing member 4.Displacement transducer 1 and force snesor 2 utilize wire to be connected with control system 5, and this control system 5 is made up of computing machine and motor.
The valve rod 61 of safety valve 6 does not establish external thread.
This securing member 4 comprises its center and is provided with the lock nut 46 that the clamping head 44 that its profile of Set and Positioning hole matched with valve rod 61 external diameter is taper, the gripping sleeve 45 with the taper hole 451 mated with clamping head 44 tapered profile and wide cut be greater than gripping sleeve 45.Offer many retraction slots 441 at clamping head 44 conical surface longitudinally, the angle between the conical surface of gripping sleeve 45 taper hole 451 and axis is 8 degree.
Clamping head 44 is put into the taper hole 451 of gripping sleeve 45 and is enclosed within valve rod 61 correct position.Lock nut 46 is connected by threaded engagement with gripping sleeve 45, under the interaction of screw thread, promotes clamping head 44 and moves to taper hole 451 small end, and under the effect of gripping sleeve 45 conical surface, generation distortion is shunk to axis and clamps valve rod 61 by clamping head 44.
On safety valve 6, arrange fixed support 7, displacement transducer 1 is arranged on the side lever of fixed support 7, and lifting arm 3 is movably connected on the cross bar on fixed support 7 top, and force snesor 2 is arranged on lifting arm 3.
Lifting arm 3 bottom is provided with hoisting frame 31, hoisting frame 31 support the lock nut 46 of touch fastener 4.
Refer to Fig. 1, utilize a kind of on-line check method for safety valve of said apparatus, comprise the following steps:
Step 1 a: device is provided, this device comprises displacement transducer 1, force snesor 2, lifting arm 3 and securing member 4, and securing member 4 is fixed on the valve rod 61 of safety valve 6; Displacement transducer 1 and force snesor 2 utilize wire to be connected with control system 5, and this control system 5 is made up of computing machine and motor;
Step 2: fixed support 7 is set on safety valve 6, force snesor 2 is arranged on lifting arm 3, and this lifting arm 3 bottom connects securing member 4 and is flexibly connected with fixed support 7;
Step 3: set the hoisting depth of valve rod 61 at 0.2-2mm in control system 5, opening process time controling is in 0.5-1S;
Step 4: start checking routine, lifting arm 3 is pulled upwardly valve rod 61 by securing member 4, the pulling force of valve rod 61 is measured by force snesor 2, the hoisting depth of valve rod 61 is measured by displacement transducer 1, when after the hoisting depth arriving control system 5 setting and after the opening time, lifting arm 3 automatic fall-back, valve rod 61 resets;
Step 5: according to the pulling force in opening process under each sensor record, highly, the data such as time, calculate (unlatching) pressure of adjusting of safety valve 6.
Similarly, the utility model is also applicable to the on-line testing of the condensate water pot safety valve in digestion series.Safety valve valve rod is not had to flash evaporator safety valve, the condensate water pot safety valve of hoisting nut, the utility model is provided with above-mentioned two kinds of fastening structures, to realize on-line testing.
In sum, the utility model is steam according to the medium top in flash evaporator, the operational characteristic of bottom slip, by changing checking parameter, control safety valve valve rod opening time and hoisting depth, avoid viscous medium in flash evaporator to discharge and affect safety valve sealing property, thus safety valve on-line testing can be realized, therefore, the work period of flash evaporator can be extended, the dismounting of safety valve in off-line checking procedure can be saved, lifting, transport, verification, return the cost in the series of tasks such as dress process, reduce the labour intensity of workman, the normal work running of guarantee company.
Above-mentioned explanation is the detailed description for the better possible embodiments of the utility model, but embodiment is also not used to limit patent claim of the present utility model, the equal change completed under technical spirit suggested by all the utility model or modification are changed, and all should belong to the utility model and contain the scope of the claims.
Claims (7)
1. a safety valve on-line testing device, comprises force snesor, lifting arm, it is characterized in that: also comprise displacement transducer and securing member, and securing member is fixed on the valve rod of safety valve; Also be included in the fixed support arranged of safety valve above, force snesor is arranged on lifting arm, and this lifting arm bottom connects securing member and is flexibly connected with fixed support; Displacement transducer and force snesor utilize wire to be connected with control system, in hoisting depth and the opening time of control system setting valve rod, complete verification before making slip arrival safety valve valve port.
2. a kind of safety valve on-line testing device as claimed in claim 1, it is characterized in that: during verification, valve rod is risen to the hoisting depth 0.2-2mm of setting by lifting arm in the opening time 0.5-2S of setting by securing member, measured the pulling force of valve rod by force snesor, measured the hoisting depth of valve rod by displacement transducer.
3. a kind of safety valve on-line testing device as claimed in claim 1, is characterized in that: control system is made up of computing machine and motor.
4. a kind of safety valve on-line testing device as claimed in claim 1, it is characterized in that: this securing member comprises nut, pad and locking cap, the wide cut of locking cap is greater than nut relatively; Locking cap is embedded on valve rod, and prevents locking cap prolapse upwards by nut and valve rod bolt, and pad is located between locking cap and nut.
5. a kind of safety valve on-line testing device as claimed in claim 1, it is characterized in that: this securing member comprises its center and is provided with the lock nut that the clamping head that its profile of Set and Positioning hole matched with valve rod external diameter is taper, the gripping sleeve with the taper hole mated with clamping head tapered profile and wide cut be greater than gripping sleeve, and clamping head is put into the taper hole of gripping sleeve and is enclosed within valve rod correct position; Lock nut is connected by threaded engagement with gripping sleeve, under the interaction of screw thread, promotes clamping head and moves to taper hole small end, and under the effect of the gripping sleeve conical surface, generation distortion is shunk to axis and clamps valve rod by clamping head.
6. a kind of safety valve on-line testing device as claimed in claim 5, is characterized in that: offer many retraction slots at clamping head conical surface longitudinally.
7. a kind of safety valve on-line testing device as claimed in claim 5, is characterized in that: the angle between the conical surface of gripping sleeve taper hole and axis is 8 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725959.7U CN204228400U (en) | 2014-11-26 | 2014-11-26 | A kind of safety valve on-line testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725959.7U CN204228400U (en) | 2014-11-26 | 2014-11-26 | A kind of safety valve on-line testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204228400U true CN204228400U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725959.7U Active CN204228400U (en) | 2014-11-26 | 2014-11-26 | A kind of safety valve on-line testing device |
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| CN (1) | CN204228400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677627A (en) * | 2015-03-26 | 2015-06-03 | 华北电力大学（保定） | On-line detection system for electrodynamic safety valve |
-
2014
- 2014-11-26 CN CN201420725959.7U patent/CN204228400U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677627A (en) * | 2015-03-26 | 2015-06-03 | 华北电力大学（保定） | On-line detection system for electrodynamic safety valve |
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| GR01 | Patent grant |