CN204868631U - Steam turbine stop valve overhauls uses locking device - Google Patents
Steam turbine stop valve overhauls uses locking device Download PDFInfo
- Publication number
- CN204868631U CN204868631U CN201520647772.4U CN201520647772U CN204868631U CN 204868631 U CN204868631 U CN 204868631U CN 201520647772 U CN201520647772 U CN 201520647772U CN 204868631 U CN204868631 U CN 204868631U
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- position limiting
- steam
- installing rack
- jackscrew bar
- stop valve
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- 238000012423 maintenance Methods 0.000 claims description 28
- 239000000969 carrier Substances 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 12
- 238000009434 installation Methods 0.000 abstract description 10
- 241001133184 Colletotrichum agaves Species 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Control Of Turbines (AREA)
Abstract
The utility model discloses a steam turbine stop valve overhauls uses locking device, including setting up the support frame on main valve support, set up in locking structure on the support frame, the locking structure includes first locking structure, first locking structure is including a limit structure of a pair of relative setting at least, a limit structure is butt in the first steam valve wall both sides of stop valve seat respectively, still include with first locking structure is the crisscross second locking structure that sets up each other, second locking structure includes at least one the 2nd limit structure, the 2nd limit structure all with the crisscross second steam valve wall one side butt of the first steam valve wall of stop valve seat. Limit main valve's displacement when main valve examines and repair, can not produce extra power and moment to device interface because of main valve's displacement when guaranteeing to examine and repair, satisfy the technical requirement of the unstressed installation of steam turbine factory.
Description
Technical field
The utility model relates to temperature of power plant steam turbine technical field, particularly relates to a kind of Steam Turbine's Main Vaper Valve maintenance locking device.
Background technology
In thermal power plant and nuclear plant, steam turbine is key equipment thermal energy being become mechanical energy.And in the therrmodynamic system of steam turbine, main inlet throttle-stop valve is the important composition parts of whole system for admitting steam into turbine.Main inlet throttle-stop valve is arranged on the high-pressure admission side of steam turbine, owing to will absorb the thermal expansion of high temperature steam pipeline, usually arranges spring support at main inlet throttle-stop valve place.Floating type main inlet throttle-stop valve can be subjected to displacement when overhauling, and this displacement can produce equipment interface and damage.The displacement of main inlet throttle-stop valve to have certain effect power to equipment interface under inspecting state, and this power can produce damage to equipment, the installation required with steam turbine producer and to overhaul must be that the technical stipulation carried out under unstress state contradicts.
Normal conditions tubine main inlet throttle-stop valve, when overhauling, is generally do interim measure by site examining and repairing unit, and producer does not provide the technological guidance of specialty.Scene mostly is shaped steel and builds, and directly bores a hole on shaped steel, does not have relevant technical specification, does not also have clear and definite requirement and guidance for spacing displacement and direction.The displacement of stop valve when overhauling can cause the force and moment to pipe end under maintenance down state; force and moment under this cold conditions can produce certain active force for the equipment with pipe joint, cannot meet the requirement of the unstressed installation of some steam turbines and maintenance.And the problem that the interim measure that unit in charge of construction scene is arranged exists design, construction lacks specification, can produce potential safety hazard; And specification is not had to the design of locking angle, permission displacement, the problem that installation accuracy is low can be caused.
Utility model content
Based on this, for above-mentioned problem, the utility model proposes a kind of Steam Turbine's Main Vaper Valve maintenance locking device, in the displacement of main inlet throttle-stop valve maintenance limit main inlet throttle-stop valve, when ensureing maintenance, extra force and moment can not be produced because of the displacement of main inlet throttle-stop valve to equipment interface.
Its technical scheme is as follows:
A kind of Steam Turbine's Main Vaper Valve maintenance locking device, comprises the bracing frame be arranged on main inlet throttle-stop valve support, is arranged at the latch-up structure on support frame as described above; Described latch-up structure comprises the first latch-up structure, and described first latch-up structure comprises at least one pair of first position limiting structure be oppositely arranged, and described first position limiting structure is connected to the first steam valve wall both sides of stop valve seat respectively; Also comprise the second latch-up structure with the interlaced setting of described first latch-up structure, described second latch-up structure comprises at least one second position limiting structure, and the second steam valve wall side that described second position limiting structure all interlocks with the first steam valve wall of stop valve seat abuts.
By arranging the bracing frame be connected and fixed with main inlet throttle-stop valve support, and the first interlaced latch-up structure and the second latch-up structure being set on bracing frame, can carrying out to the first steam valve wall of interlaced stop valve seat and the second steam valve wall abuttings respectively fixing.Thus can lock stop valve seat from different directions, stop valve lock-out state in the cold state can be ensured, can effectively offset install or maintenance time the power that produces due to valve displacement docking port place, the requirement of producer about unstressed installation or maintenance can be met.
Below its further technical scheme is described:
Further, support frame as described above comprises the longitudinal carrier of the first steam valve wall both sides being arranged at stop valve seat respectively, and described longitudinal carrier is fixed on main inlet throttle-stop valve support, and is provided with the first position limiting structure described at least one inside each described longitudinal carrier; And the horizontal support be arranged at above the first steam valve wall, described horizontal support is fixed on two described longitudinal carriers, and described horizontal support is provided with the second position limiting structure described at least one.A horizontal support and two longitudinal carriers are connected to form the bracing frame of approximate H-shaped, and are all fixed on by longitudinal carrier on main inlet throttle-stop valve support, reliable to the fixing-stable of whole locking device.And the first latch-up structure is arranged on longitudinal carrier, the second latch-up structure is arranged on horizontal support, convenient fixes from carrying out dieback to stop valve seat on horizontal and vertical.
Further, described first position limiting structure comprises the first installing rack be arranged on described longitudinal carrier, and described first installing rack has been threaded the first jackscrew bar, and described first jackscrew bar is connected to the first steam valve wall both sides respectively; Described second position limiting structure comprises the second installing rack be arranged on described horizontal support, and described second installing rack has been threaded the second jackscrew bar, and described second jackscrew bar is connected to second steam valve wall the same side.Utilize the first jackscrew bar and the second jackscrew bar to go up from different directions to carry out dieback to stop valve seat and fix, simple to operation, the first jackscrew bar can be installed when installation and maintenance and the first steam valve wall and the second steam valve wall push against by the second jackscrew bar, the first jackscrew bar and the second jackscrew bar can be disassembled when equipment runs.
Further, described first installing rack is set to U-lag shape, described first installing rack two ends are all connected on a described longitudinal carrier, and described first jackscrew bar one end is positioned at the U-lag of described first installing rack, and the other end to stretch out described first installing rack outer and abut with described first steam valve wall; Described second installing rack is also set to U-lag shape, described second installing rack two ends are all connected on a described horizontal support, and described second jackscrew bar one end is positioned at the U-lag of described second installing rack, and the other end to stretch out described second installing rack outer and abut with described second steam valve wall.First installing rack and the second installing rack are all set to U-lag shape, and make a part for the first jackscrew bar and the second jackscrew bar be positioned at groove, conveniently the first jackscrew bar and the second jackscrew bar are adjusted, be easy for installation and removal, and make the first jackscrew bar and the second jackscrew bar not with other constructive interferences.
Further, inside two described longitudinal carriers, be respectively arranged with described first position limiting structure, and the described first jackscrew bar of two described first position limiting structures is connected to the first steam valve wall both sides respectively; Be provided with the second position limiting structure described at least one inside described horizontal support, the described second jackscrew bar of described second position limiting structure is connected on the second steam valve wall.Two relative the first position limiting structures are set in the first steam valve wall both sides, can from the both sides of a plane to the first steam valve wall even at the cost of one's life, again at least one second position limiting structure is set in the second steam valve wall side, can from the side of another plane by the second steam valve wall even at the cost of one's life, thus can be fixing even at the cost of one's life by stop valve seat from three directions, firm stable.And, by being symmetrical arranged two the first position limiting structures, but make the structure of locking device simple reliable.
Further, two described first position limiting structures are symmetrical arranged, and the described first jackscrew bar of two described first position limiting structures is facing each other.Two the first position limiting structures are arranged symmetrically with, and make two the first jackscrew bars just right, can push against from both sides by the first steam valve wall, stressed more stable.
Further, be provided with two described second position limiting structures inside described horizontal support, and two described second position limiting structures are symmetricly set in the first steam valve wall both sides, each described second jackscrew bar all abuts with described second steam valve wall.By being symmetrical arranged two the second position limiting structures, from the diverse location of the same side, the second steam valve wall can be pushed against, stressed more stable.In conjunction with the first position limiting structure, can stop valve seat be fixed more firm.
Further, be also tiltedly installed with auxiliary stand outside described longitudinal carrier, described auxiliary stand and main inlet throttle-stop valve support are connected and fixed.By arranging auxiliary stand, can whole locking device be fixed more solid and reliable.
The utility model has following outstanding beneficial effect:
1, for convenience detach.The design that jackscrew bar is threaded with bracing frame is convenient, reliable, and jackscrew bar is detachable when stop valve runs, and needs to install during maintenance at stop valve, can not have any impact to the normal main steam line run;
2, convenient adjustment.The design be threaded, can need according to scene the position regulating jackscrew bar, facilitate Contraction in Site;
3, locking effect is good.For each locking device, all deposit lock function in the two directions, namely perpendicular to stop valve seat direction and be parallel to stop valve seat direction, the locking principle in this both direction is identical, is by regulating jackscrew bar to be fixed.Ensure that this device is safe and reliable in the locked state from the lock function of vertical plane and horizontal plane both direction;
4, good stability.The secure support of building as jackscrew bar of bracing frame, is conducive to the stability of locking device.
Accompanying drawing explanation
Fig. 1 is the perspective view of the locking device of Steam Turbine's Main Vaper Valve maintenance described in the utility model embodiment;
Fig. 2 is the perspective view that the locking device of Steam Turbine's Main Vaper Valve maintenance described in the utility model embodiment arranges when coordinating with stop valve seat.
Description of reference numerals:
100-bracing frame, 110-longitudinal carrier, 120-horizontal support, 130-auxiliary stand, 200-first position limiting structure, 210-first installing rack, 220-first jackscrew bar, 300-second position limiting structure, 310-second installing rack, 320-second jackscrew bar, 400-stop valve seat, 410-first steam valve wall, 420-second steam valve wall.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
As shown in Figure 1 to Figure 2, a kind of Steam Turbine's Main Vaper Valve maintenance locking device, comprises the bracing frame 100 be arranged on main inlet throttle-stop valve support, is arranged at the latch-up structure on bracing frame 100.Latch-up structure comprises the first latch-up structure, and the first latch-up structure comprises the first steam valve wall 410 both sides that at least one pair of first position limiting structure 200, first position limiting structure 200 be oppositely arranged is connected to stop valve seat 400 respectively.Latch-up structure also comprises the second latch-up structure with the interlaced setting of the first latch-up structure, the second steam valve wall 420 side that second latch-up structure comprises at least one second position limiting structure 300, second position limiting structure 300 all staggered with the first steam valve wall 410 of stop valve seat 400 abuts.
By arranging the bracing frame 100 be connected and fixed with main inlet throttle-stop valve support, and the first interlaced latch-up structure and the second latch-up structure are set on bracing frame 100, abutting can be carried out to the first steam valve wall 410 of interlaced stop valve seat 400 and the second steam valve wall 420 respectively and fix.Each stop valve seat 400 all devises position limiting structure in three directions, thus can lock from three different directions stop valve, stop valve lock-out state in the cold state can be ensured, can effectively offset install or maintenance time the power that produces due to valve displacement docking port place, the requirement of producer about unstressed installation or maintenance can be met.
In addition, above-mentioned bracing frame 100 comprises the longitudinal carrier 110 of the first steam valve wall 410 both sides being arranged at stop valve seat 400 respectively, and longitudinal carrier 110 is fixed on main inlet throttle-stop valve support, and is provided with at least one first position limiting structure 200 inside each longitudinal carrier 110.Bracing frame 100 also comprises the horizontal support 120 be arranged at above the first steam valve wall 410, and horizontal support 120 is fixed on two longitudinal carriers 110, and horizontal support 120 is provided with at least one second position limiting structure 300.A horizontal support 120 and two longitudinal carriers 110 are connected to form the bracing frame 100 of approximate H-shaped, and are all fixed on main inlet throttle-stop valve support by longitudinal carrier 110, reliable to the fixing-stable of whole locking device.And the first latch-up structure is arranged on longitudinal carrier 110, the second latch-up structure is arranged on horizontal support 120, convenient fixes from carrying out dieback to stop valve seat 400 on horizontal and vertical.
And also can be obliquely installed auxiliary stand 130 outside each longitudinal carrier 110, auxiliary stand 130 and main inlet throttle-stop valve support are connected and fixed.By arranging auxiliary stand 130, can whole locking device be fixed more solid and reliable.By arranging inclination auxiliary stand 130, forming HW shape shape with longitudinal carrier 110 and horizontal support 120, supporting more reliable and more stable to whole latch-up structure.
In addition, above-mentioned first position limiting structure 200 comprises the first jackscrew bar 220, first jackscrew bar 220 that the first installing rack 210, first installing rack 210 of being arranged on longitudinal carrier 110 has been threaded and is connected to the first steam valve wall 410 both sides respectively.Second position limiting structure 300 comprises the second jackscrew bar 320, second jackscrew bar 320 that the second installing rack 310, second installing rack 310 of being arranged on horizontal support 120 has been threaded and is connected to second steam valve wall 420 the same side.Utilize the first jackscrew bar 220 and the second jackscrew bar 320 to go up from different directions to carry out dieback to stop valve seat 400 and fix, simple to operation, the first jackscrew bar 220 can be installed when installation and maintenance and the first steam valve wall 410 and the second steam valve wall 420 push against by the second jackscrew bar 320, the first jackscrew bar 320 and the second jackscrew bar 320 can be disassembled when equipment runs.
Further, first installing rack 210 can be set to U-lag shape, first installing rack 210 two ends are all connected on a longitudinal carrier 110, and first jackscrew bar 220 one end is positioned at the U-lag of the first installing rack 210, and the other end to stretch out the first installing rack 210 outer and abut with the first steam valve wall 410.Also the second installing rack 320 also can be set to U-lag shape, second installing rack 310 two ends are all connected on a horizontal support 120, and second jackscrew bar 320 one end is positioned at the U-lag of the second installing rack 310, and the other end to stretch out the second installing rack 310 outer and abut with the second steam valve wall 420.First installing rack 210 and the second installing rack 310 are all set to U-lag shape, and make a part for the first jackscrew bar 220 and the second jackscrew bar 320 be positioned at groove, conveniently the first jackscrew bar 220 and the second jackscrew bar 320 are adjusted, be easy for installation and removal, and make the first jackscrew bar 220 and the second jackscrew bar 320 not with other constructive interferences.
In one embodiment, first position limiting structure 200 can be respectively arranged with inside two longitudinal carriers 110, and the first jackscrew bar 220 of two the first position limiting structures 200 is connected to the first steam valve wall 410 both sides respectively.Be provided with at least one second position limiting structure 300 inside horizontal support 120, can make that the second position limiting structure 300 and the first position limiting structure 200 are mutually vertical to be arranged, and the second jackscrew bar 320 of the second position limiting structure 300 is connected on the second steam valve wall 420.Two relative the first position limiting structures 200 are set in the first steam valve wall 410 both sides, can from the both sides of a plane to the first steam valve wall 410 even at the cost of one's life, again at least one second position limiting structure 300 is set in the second steam valve wall 420 side, can from the side of another plane by the second steam valve wall 420 even at the cost of one's life, thus can be fixing even at the cost of one's life by stop valve seat 400 from three directions, firm stable.
Further, two the first position limiting structures 200 can be made to be symmetrical arranged, and the first jackscrew bar 220 of two the first position limiting structures 200 is facing each other.Two the first position limiting structures 200 are arranged symmetrically with, and make two the first jackscrew bars 220 just right, can push against from both sides by the first steam valve wall 410, stressed more stable.And, by being symmetrical arranged two the first position limiting structures 200, but make the structure of locking device simple reliable.In addition, can arrange two the second position limiting structures 300 inside horizontal support 120, and two the second position limiting structures 300 are symmetricly set in the first steam valve wall 410 both sides, each second jackscrew bar 320 all abuts with the second steam valve wall 420.By being symmetrical arranged two the second position limiting structures 300, from the diverse location of the same side, the second steam valve wall 420 can be pushed against, stressed more stable.In conjunction with the first position limiting structure 200, can stop valve seat 400 be fixed more firm.
The Steam Turbine's Main Vaper Valve maintenance locking device that the utility model proposes, the design that jackscrew bar (i.e. the first jackscrew bar and the second jackscrew bar) is threaded with bracing frame is convenient, reliable, jackscrew bar is detachable when stop valve runs, need to install during maintenance at stop valve, can not have any impact to the normal main steam line run; And the design be threaded, can need according to scene the position regulating jackscrew bar, facilitate Contraction in Site; In addition, for each locking device, all deposit lock function in the two directions, namely perpendicular to stop valve seat direction and be parallel to stop valve seat direction, locking principle in this both direction is identical, being by regulating jackscrew bar to be fixed, ensure that this device is safe and reliable in the locked state from the lock function of vertical plane and horizontal plane both direction; The secure support of building as jackscrew bar of HW shape bracing frame, is conducive to the stability of locking device.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a Steam Turbine's Main Vaper Valve maintenance locking device, is characterized in that, comprises the bracing frame be arranged on main inlet throttle-stop valve support, is arranged at the latch-up structure on support frame as described above;
Described latch-up structure comprises the first latch-up structure, and described first latch-up structure comprises at least one pair of first position limiting structure be oppositely arranged, and described first position limiting structure is connected to the first steam valve wall both sides of stop valve seat respectively; Also comprise the second latch-up structure with the interlaced setting of described first latch-up structure, described second latch-up structure comprises at least one second position limiting structure, and the second steam valve wall side that described second position limiting structure all interlocks with the first steam valve wall of stop valve seat abuts.
2. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 1, it is characterized in that, support frame as described above comprises the longitudinal carrier of the first steam valve wall both sides being arranged at stop valve seat respectively, described longitudinal carrier is fixed on main inlet throttle-stop valve support, and is provided with the first position limiting structure described at least one inside each described longitudinal carrier;
And the horizontal support be arranged at above the first steam valve wall, described horizontal support is fixed on two described longitudinal carriers, and described horizontal support is provided with the second position limiting structure described at least one.
3. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 2, it is characterized in that, described first position limiting structure comprises the first installing rack be arranged on described longitudinal carrier, described first installing rack has been threaded the first jackscrew bar, and described first jackscrew bar is connected to the first steam valve wall both sides respectively;
Described second position limiting structure comprises the second installing rack be arranged on described horizontal support, and described second installing rack has been threaded the second jackscrew bar, and described second jackscrew bar is connected to second steam valve wall the same side.
4. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 3, it is characterized in that, described first installing rack is set to U-lag shape, described first installing rack two ends are all connected on a described longitudinal carrier, and described first jackscrew bar one end is positioned at the U-lag of described first installing rack, and the other end to stretch out described first installing rack outer and abut with described first steam valve wall;
Described second installing rack is also set to U-lag shape, described second installing rack two ends are all connected on a described horizontal support, and described second jackscrew bar one end is positioned at the U-lag of described second installing rack, and the other end to stretch out described second installing rack outer and abut with described second steam valve wall.
5. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 3, it is characterized in that, be respectively arranged with described first position limiting structure inside two described longitudinal carriers, and the described first jackscrew bar of two described first position limiting structures is connected to the first steam valve wall both sides respectively;
Be provided with the second position limiting structure described at least one inside described horizontal support, the described second jackscrew bar of described second position limiting structure is connected on the second steam valve wall.
6. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 5, is characterized in that, two described first position limiting structures are symmetrical arranged, and the described first jackscrew bar of two described first position limiting structures is facing each other.
7. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 5, it is characterized in that, two described second position limiting structures are provided with inside described horizontal support, and two described second position limiting structures are symmetricly set in the first steam valve wall both sides, each described second jackscrew bar all abuts with described second steam valve wall.
8. Steam Turbine's Main Vaper Valve maintenance locking device according to claim 2, is characterized in that, be also tiltedly installed with auxiliary stand outside described longitudinal carrier, and described auxiliary stand and main inlet throttle-stop valve support are connected and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647772.4U CN204868631U (en) | 2015-08-24 | 2015-08-24 | Steam turbine stop valve overhauls uses locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647772.4U CN204868631U (en) | 2015-08-24 | 2015-08-24 | Steam turbine stop valve overhauls uses locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204868631U true CN204868631U (en) | 2015-12-16 |
Family
ID=54813052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520647772.4U Expired - Fee Related CN204868631U (en) | 2015-08-24 | 2015-08-24 | Steam turbine stop valve overhauls uses locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204868631U (en) |
-
2015
- 2015-08-24 CN CN201520647772.4U patent/CN204868631U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 |