CN113977516A - Dismounting method of hydraulic dismounting device for valve cage of regulating valve - Google Patents
Dismounting method of hydraulic dismounting device for valve cage of regulating valve Download PDFInfo
- Publication number
- CN113977516A CN113977516A CN202111184042.1A CN202111184042A CN113977516A CN 113977516 A CN113977516 A CN 113977516A CN 202111184042 A CN202111184042 A CN 202111184042A CN 113977516 A CN113977516 A CN 113977516A
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- Prior art keywords
- valve cage
- valve
- steel plate
- cage
- hydraulic
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
Abstract
A dismounting method of a hydraulic dismounting device of a valve cage of a regulating valve. The traditional dismounting method is that the upper end face of the valve cage is directly knocked by the copper rod, the tightness of the valve body and the valve cage is reduced through vibration, the valve cage is taken out after the gap between the valve body and the valve cage is increased, the process is long in time consumption, time and labor are wasted, and the success rate is low. The invention comprises the following components: periphery and steel sheet (1), promotion strutting arrangement and a plurality of bolt (2) the same with valve cage up end size, it is a plurality of the bolt penetrate the steel sheet on a set of bolt hole back threaded connection that corresponds at the valve cage in the balancing hole, promotion strutting arrangement's last impetus be located steel sheet bottom end face center. The dismounting method is used for the hydraulic dismounting device of the valve cage of the regulating valve.
Description
Technical Field
The invention relates to a dismounting method of a hydraulic dismounting device of a valve cage of a regulating valve.
Background
The valve cage type regulating valve plays a key role in an automatic control process and is an important component in industrial production control. Coal fired power plant boiler high pressure cage governing valve can appear leaking, trouble such as vibration in the operation process, leads to not having satisfied the production requirement, overhauls cage governing valve for this needs.
The valve cage must be torn open from the valve body during the maintenance, however because the valve cage is inseparable with the valve body installation, dismantlement in-process card hinders seriously, and traditional dismantlement method adopts the bar copper directly to strike the valve cage up end, through vibrating, reduces the compactness of valve body and valve cage, takes out the valve cage behind the increase two clearance, and this process is consuming time longer, wastes time and energy, and the success rate is lower, may even cause the damage because brute force strikes to valve cage and valve body part.
In view of the above, there is a need to develop a disassembling tool for a valve cage of a control valve, so as to solve the technical problem of low disassembling efficiency of the existing valve cage.
Disclosure of Invention
The invention aims to solve the problems in the process of disassembling a valve cage in an adjusting valve at present, and the disassembling tool for the valve cage of the adjusting valve is designed, so that the disassembling tool is used for disassembling the valve cage in the adjusting valve, the disassembling tool can greatly improve the disassembling efficiency of the valve cage, saves labor and is suitable for disassembling the valve cages of two types.
The above purpose is realized by the following technical scheme:
a method for dismounting a hydraulic dismounting device of a regulating valve cage comprises a steel plate, a lifting support device and a plurality of bolts, wherein the size of the periphery of the steel plate is the same as that of the upper end face of the valve cage, the plurality of bolts penetrate through a group of corresponding bolt holes in the steel plate and then are connected in balance holes of the valve cage in a threaded mode, and an upper acting point of the lifting support device is located in the center of the lower end face of the steel plate;
the disassembly method of the hydraulic disassembly device for the valve cage of the regulating valve comprises the following steps:
(1) cleaning visible dirt of the valve cage 7, and spraying the dirt on the edge of the valve cage by using a loosening agent;
(2) firstly, inserting four copper bolts into a group of bolt holes correspondingly required on a steel plate, then inserting a gasket and a nut on the bolts, screwing the four bolts into tapped balance holes on a valve cage, firmly installing the four copper bolts on the valve cage, and screwing the nut to fix the steel plate;
(3) the lower end face of the precise hydraulic jack is in close contact with the lowest point in the valve body, and the upper end face of the precise hydraulic jack is in close contact with the center of the lower end face of the steel plate;
(4) the upper end face of the valve cage is uniformly and forcefully hit by a rapping device, and the valve cage is repeatedly hit on the outer ring of the valve cage for 3-5 minutes according to the blocking degree of the valve cage, so that the connection tightness between the valve cage and the valve body is reduced, the gap between the valve cage and the valve body is increased, and the valve cage can slightly move in the valve body 8;
(5) enabling the precise hydraulic jack to work, pushing the steel plate upwards, enabling the steel plate to move upwards, enabling the copper bolt to move upwards through the upward movement of the steel plate, and further enabling the valve cage to move upwards;
(6) and (5) repeating the steps (4) to (5) for multiple times, wherein the steps (4) and (5) can be carried out simultaneously until the valve cage is taken out from the valve body.
According to the dismounting method of the hydraulic dismounting device for the regulating valve cage, the steel plate is provided with two groups of bolt holes, and four holes in each group are circumferentially arranged at intervals of 90 degrees.
According to the dismounting method of the hydraulic dismounting device for the valve cage of the regulating valve, the lifting support device is a precise hydraulic jack.
Has the advantages that:
1. the disassembling tool is used during maintenance of the cage type adjusting valve, the problem of blockage and disassembly of the cage type adjusting valve can be solved, the disassembling tool is high in practicability and can be used repeatedly, the cage type adjusting valve disassembling efficiency and the success rate can be greatly improved, the maintenance work efficiency of the adjusting valve is improved, the efficiency is improved to 0.5 h/machine from the original 1.5 h/machine, the labor cost is reduced, damage events of equipment such as the cage and a valve body caused by brute force disassembly are avoided, the safety and reliability of maintenance of the adjusting valve are improved, and the uncontrollable maintenance risk is reduced.
2. According to the precise hydraulic jack, the lower acting point is located at the lowest part of the center of the valve body, the upper acting point is located at the center of the lower end face of the steel plate, the precise hydraulic jack is provided with a highest limit pressure value, and when the acting force of the precise hydraulic jack is larger than the maximum limit pressure value, pressure relief is carried out, and loading is carried out again.
3. According to the invention, the rapping device is used for uniformly and forcefully rapping the upper end surface of the valve cage from different positions, and meanwhile, the precise hydraulic jack is used for working to jack up the steel plate, so that the copper bolt can be lifted upwards, the tightness of the connection between the valve cage and the valve body is reduced, and the gap between the valve cage and the valve body is increased.
Description of the drawings:
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
in the figure: 1. a steel plate; 2. a copper bolt; 3. a precision hydraulic jack; 4. a copper bar; 5. a nut; 6. a gasket; 7. a cage; 8. a valve body.
The specific implementation mode is as follows:
example 1:
a method for dismounting a hydraulic dismounting device of a regulating valve cage comprises a steel plate 1, a lifting support device and a plurality of bolts 2, wherein the size of the periphery of the steel plate 1 is the same as that of the upper end face of the valve cage, the bolts penetrate through a group of corresponding bolt holes in the steel plate and then are connected in balance holes of the valve cage in a threaded mode, and an upper acting point of the lifting support device is located in the center of the lower end face of the steel plate;
the disassembly method of the hydraulic disassembly device for the valve cage of the regulating valve comprises the following steps:
(1) cleaning visible dirt of the valve cage 7, and spraying the dirt on the edge of the valve cage by using a loosening agent;
(2) firstly, inserting four copper bolts into a group of bolt holes correspondingly required on a steel plate, then inserting a gasket and a nut on the bolts, screwing the four bolts into tapped balance holes on a valve cage, firmly installing the four copper bolts on the valve cage, and screwing the nut to fix the steel plate;
(3) the lower end surface of the lifting support device is in close contact with the lowest point in the valve body, and the upper end surface of the lifting support device is in close contact with the center of the lower end surface of the steel plate;
(4) the upper end face of the valve cage is uniformly and forcefully hit by a rapping device, a rapping head of the rapping device is made of copper, and the rapping head is repeatedly hit on the outer ring of the valve cage for 3-5 minutes according to the blocking degree of the valve cage, so that the tightness of the connection between the valve cage and the valve body is reduced, the gap between the valve cage and the valve body is increased, and the valve cage can slightly move in the valve body 8;
(5) enabling the lifting support device to work, pushing the steel plate upwards, enabling the steel plate to move upwards, enabling the copper bolt to move upwards through the upward movement of the steel plate, and further enabling the valve cage to move upwards;
(6) and (5) repeating the steps (4) to (5) for multiple times, wherein the steps (4) and (5) can be carried out simultaneously until the valve cage is taken out from the valve body.
Example 2:
according to the hydraulic dismounting device for the regulating valve cage in the embodiment 1, the steel plate is provided with two groups of bolt holes, four holes in each group are circumferentially arranged at intervals of 90 degrees, and the two groups of bolt holes are formed in the steel plate and can be used for dismounting the two types of valve cages.
Example 3:
according to the hydraulic dismounting device for the valve cage of the regulating valve in the embodiment 1, the lifting support device is a precise hydraulic jack.
Claims (3)
1. A dismounting method of a hydraulic dismounting device of a regulating valve cage is characterized by comprising the following steps: the hydraulic dismounting device for the valve cage of the regulating valve comprises a steel plate, a lifting support device and a plurality of bolts, wherein the periphery of the steel plate is the same as the size of the upper end face of the valve cage, the plurality of bolts penetrate through a group of corresponding bolt holes in the steel plate and then are in threaded connection with balance holes in the valve cage, and an upper acting point of the lifting support device is positioned in the center of the lower end face of the steel plate;
the disassembly method of the hydraulic disassembly device for the valve cage of the regulating valve comprises the following steps:
(1) cleaning visible dirt of the valve cage, and spraying a loosening agent on the edge of the valve cage;
(2) firstly, inserting four copper bolts into a group of bolt holes correspondingly required on a steel plate, then inserting a gasket and a nut on the bolts, screwing the four bolts into tapped balance holes on a valve cage, firmly installing the four copper bolts on the valve cage, and screwing the nut to fix the steel plate;
(3) the lower end face of the precise hydraulic jack is in close contact with the lowest point in the valve body, and the upper end face of the precise hydraulic jack is in close contact with the center of the lower end face of the steel plate;
(4) the upper end face of the valve cage is uniformly and forcefully hit by a rapping device, and the valve cage is repeatedly hit on the outer ring of the valve cage for 3-5 minutes according to the blocking degree of the valve cage, so that the connection tightness between the valve cage and the valve body is reduced, the gap between the valve cage and the valve body is increased, and the valve cage can slightly move in the valve body 8;
(5) enabling the precise hydraulic jack to work, pushing the steel plate upwards, enabling the steel plate to move upwards, enabling the copper bolt to move upwards through the upward movement of the steel plate, and further enabling the valve cage to move upwards;
(6) and (5) repeating the steps (4) to (5) for multiple times, wherein the steps (4) and (5) can be carried out simultaneously until the valve cage is taken out from the valve body.
2. A method of disassembling a regulator valve cage hydraulic disassembly apparatus of claim 1, further comprising: the steel plate is provided with two groups of bolt holes, wherein each group of four holes are circumferentially arranged at intervals of 90 degrees.
3. A method of disassembling a regulator valve cage hydraulic disassembly apparatus of claim 1, further comprising: the lifting support device is a precise hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184042.1A CN113977516A (en) | 2021-10-11 | 2021-10-11 | Dismounting method of hydraulic dismounting device for valve cage of regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111184042.1A CN113977516A (en) | 2021-10-11 | 2021-10-11 | Dismounting method of hydraulic dismounting device for valve cage of regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN113977516A true CN113977516A (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111184042.1A Pending CN113977516A (en) | 2021-10-11 | 2021-10-11 | Dismounting method of hydraulic dismounting device for valve cage of regulating valve |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7214981A (en) * | 1980-09-22 | 1982-04-01 | American Standard, Inc. | Jacking tool for draft gears |
| CN102897652A (en) * | 2011-07-25 | 2013-01-30 | 中电华元核电工程技术有限公司 | Nuclear power regulating valve cage lifter |
| CN205852688U (en) * | 2016-07-04 | 2017-01-04 | 中国石油天然气股份有限公司 | Valve cage extracting tool |
| CN107866775A (en) * | 2016-09-26 | 2018-04-03 | 中电华元核电工程技术有限公司 | A kind of nuclear power station valve valve cage attaching/detaching apparatus |
| CN109630697A (en) * | 2017-10-09 | 2019-04-16 | 大力士股份有限公司 | Poppet and component for poppet |
| CN213290111U (en) * | 2020-07-27 | 2021-05-28 | 中核检修有限公司 | Valve cage extracting tool |
-
2021
- 2021-10-11 CN CN202111184042.1A patent/CN113977516A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7214981A (en) * | 1980-09-22 | 1982-04-01 | American Standard, Inc. | Jacking tool for draft gears |
| CN102897652A (en) * | 2011-07-25 | 2013-01-30 | 中电华元核电工程技术有限公司 | Nuclear power regulating valve cage lifter |
| CN205852688U (en) * | 2016-07-04 | 2017-01-04 | 中国石油天然气股份有限公司 | Valve cage extracting tool |
| CN107866775A (en) * | 2016-09-26 | 2018-04-03 | 中电华元核电工程技术有限公司 | A kind of nuclear power station valve valve cage attaching/detaching apparatus |
| CN109630697A (en) * | 2017-10-09 | 2019-04-16 | 大力士股份有限公司 | Poppet and component for poppet |
| CN213290111U (en) * | 2020-07-27 | 2021-05-28 | 中核检修有限公司 | Valve cage extracting tool |
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