CN-121571988-B - Spring cylinder assembly fixture applied to valve

CN121571988BCN 121571988 BCN121571988 BCN 121571988BCN-121571988-B

Abstract

Be applied to spring cylinder assembly fixture on valve, through set up axiality correcting unit on pressure equipment mechanism, can ensure the axiality between spring cylinder and the flange of waiting to assemble in the assembly process, effectively improve assembly precision and assembly quality. The mounting seat is movably arranged on the press-fitting mechanism, so that the coaxiality correcting device can be subjected to position adjustment according to actual assembly requirements so as to adapt to assembly of spring cylinders and flanges with different specifications and sizes. The first reference block is fixedly connected with the mounting seat, and a first reference surface of the first reference block is connected with the flange to be assembled, so that an accurate positioning reference is provided for the flange. The second reference block is in sliding connection with the first reference block, the second reference surface of the second reference block is connected with the spring cylinder to be assembled, and when the second reference block slides to the position that the first reference surface and the second reference surface are positioned on the same horizontal line, the fact that the spring cylinder to be assembled and the flange to be assembled are arranged in a coaxial structure is indicated, and at the moment, accurate press-fitting operation can be performed.

Inventors

HUANG ZILONG
WANG XIAOJING
LIN CHONGCHENG
WANG BAOGEN
LIN SHENGFENG

Assignees

江南阀门有限公司

Dates

Publication Date: 20260512
Application Date: 20260128

Claims (8)

1. The utility model provides a be applied to spring jar assembly fixture on valve, includes base, fixed pressure equipment mechanism that sets up in base one side and along the mobilizable fly leaf that sets up on the base of base length direction, form the assembly station between fly leaf and the pressure equipment mechanism, place in the assembly station and wait to assemble spring jar, its characterized in that: the cylinder body supporting and adjusting mechanism is movably arranged in the assembling station along the length direction of the assembling station, the cylinder body supporting and adjusting mechanism supports a cylinder body to be assembled in the assembling station, the height of the cylinder body to be assembled in the assembling station is adjusted to enable the cylinder body to be assembled and the pressing mechanism to be positioned on the same central axis, the pressing mechanism is provided with a coaxiality correcting device, the coaxiality correcting device comprises a mounting seat, a first reference block arranged vertical to the mounting seat and a second reference block in sliding connection with the first reference block, the mounting seat is provided with a movable slot, the pressing mechanism comprises a pressing fixing plate and a pressing power source, the pressing power source is arranged on one side of the pressing fixing plate away from the assembling station, the mounting seat is movably inserted on the pressing fixing plate through the movable slot, the first reference block is arranged on one side end face of the mounting seat close to the assembling station and is fixedly connected with the mounting seat, the first reference block is provided with a first sliding inclined surface, the second reference block is provided with a second sliding inclined surface corresponding to the first inclined surface and a first inclined surface, the second inclined surface is provided with a sliding prompt surface corresponding to the first inclined surface, after the first datum plane of the first datum block and the second datum plane of the second datum block are positioned on the same horizontal line, the prompting mechanism sends out a prompting signal, the top of the first sliding inclined plane protrudes to form a matching end, the top of the second sliding inclined plane corresponds to the matching end to form a matching groove, the prompting mechanism is a pressure sensor arranged between the matching end and the matching groove, the prompting mechanism is completely embedded into the matching groove when the matching end is positioned in the matching groove, and when the first datum plane and the second datum plane are positioned on the same horizontal line, the pressure received by the pressure sensor reaches a preset value, so that the prompting signal is triggered.
2. The spring cylinder assembly fixture for the valve of claim 1, wherein the cylinder support adjusting mechanism comprises a longitudinal support adjusting unit and a transverse moving unit, the longitudinal support adjusting unit is fixed on the transverse moving unit, a plurality of guide rails are arranged on the base, and the transverse moving unit and the movable plate are movably arranged on the corresponding guide rails.
3. The spring cylinder assembly fixture for the valve of claim 2, wherein the transverse moving unit comprises a moving vehicle and moving limiting parts, the moving limiting parts are arranged on two sides of the moving vehicle in a lifting mode, the moving vehicle is arranged on a guide rail, the moving limiting parts are pressed against the guide rail after being lifted or lowered, and the position of the moving vehicle on the guide rail is limited and fixed.
4. The spring cylinder assembly fixture for the valve of claim 3, wherein the movable limiting piece is provided with a limiting groove, the guide rail penetrates through the limiting groove, the bottoms of the groove walls on two opposite sides of the limiting groove are protruded to form limiting ends, the limiting ends are provided with inclined surfaces connected with the guide rail, and the two limiting ends respectively abut against two side end surfaces of the guide rail.
5. The spring cylinder assembly fixture for the valve of claim 4, wherein the movable limiting member is provided with an adjusting groove which is formed along the height direction of the movable limiting member, a positioning screw is arranged in the adjusting groove, one end of the positioning screw penetrates through the adjusting groove to be in threaded connection with the movable trolley, the movable trolley is provided with a longitudinal adjusting rod, one end of the longitudinal adjusting rod is movably connected with the movable limiting member, the movable limiting member longitudinally moves along the length direction of the longitudinal adjusting rod, and the height of the movable limiting member on the movable trolley is limited by screwing the positioning screw.
6. The spring cylinder assembly fixture for the valve of claim 2, wherein the longitudinal support adjusting unit comprises a lifting power source, a transmission assembly and a lifting assembly, the transmission assembly is respectively connected with the lifting power source and the lifting assembly, the spring cylinder to be assembled is placed on the lifting assembly, and the lifting power source drives the lifting assembly to lift through the transmission assembly so as to enable the spring cylinder to be assembled on the lifting assembly to adjust the longitudinal position.
7. The spring cylinder assembly fixture for the valve of claim 6, wherein the transmission assembly comprises a worm wheel and a worm, the worm is provided with a power transmission part and a worm wheel transmission part, a speed reducer is arranged between the power transmission part and the lifting power source, the speed reducer is respectively connected with the worm and the lifting power source, the worm wheel transmission part of the worm is connected with the worm wheel to drive the worm wheel to rotate, one end of the lifting assembly is connected with the worm wheel in a threaded manner, and the worm wheel is driven to spirally rise or fall in the rotating process of the worm wheel.
8. The spring cylinder assembly fixture for the valve of claim 1, wherein the flange to be assembled is placed on the press-fit mechanism, the mounting seat is movably arranged on the press-fit mechanism, one end of the first reference block is connected with the mounting seat, the first reference block is provided with a first reference surface connected with the flange to be assembled, the second reference block is provided with a second reference surface connected with the spring cylinder to be assembled, and when the first reference surface and the second reference surface are on the same horizontal line after the second reference block slides, the spring cylinder to be assembled and the flange to be assembled are arranged in a coaxial structure.

Description

Spring cylinder assembly fixture applied to valve Technical Field The invention relates to the technical field of valve tools, in particular to a spring cylinder assembly tool applied to a valve. Background Valve for nuclear power station plays a vital role in the operation system of the nuclear power station, and the valve is sexual The advantages and disadvantages of the energy are directly related to the safe and stable operation of the nuclear power station. The spring cylinder is used as one of key components of the valve, and the assembly precision and quality of the spring cylinder have a non-negligible influence on the overall performance of the valve. Traditional spring cylinder assembly mode often lacks effectual axiality guarantee measure, is difficult to ensure the accurate coaxial between spring cylinder and the flange in the assembly process, and this not only leads to the valve after the assembly to appear leaking the problem such as block in the use easily, influences the normal function of valve, still probably shortens the life of valve, increases the maintenance cost and the security risk of nuclear power station. In addition, the traditional assembly mode has poor assembly adaptability to spring cylinders and flanges with different specifications and sizes, and the assembly tool is required to be frequently replaced or complicated adjustment operation is required, so that the assembly efficiency is greatly reduced, and the requirements of large-scale production and high-efficiency operation and maintenance of the nuclear power station cannot be met. The patent number is "CN2024214214791" discloses an assembly fixture for spring cylinder, but this frock is fixed spring cylinder and flange through simple location structure only, although improved the convenience of assembly to a certain extent, still can not effectively ensure axiality precision between the two. Especially when facing the scene that the requirement on assembly precision is extremely high such as nuclear power station valve, this frock is difficult to satisfy actual production demand, and the valve after the assembly still probably has the unstable, short service life scheduling problem of performance. When the valve of the nuclear power station is assembled, if the coaxiality of the spring cylinder cannot be accurately ensured, a series of serious problems can be caused. In the actual operation process of the valve, the coaxiality deviation can enable uneven stress between the spring cylinder and the flange, the uneven stress can accelerate abrasion of parts, and then the sealing performance of the valve is reduced, and leakage phenomenon occurs. Once leakage occurs, radioactive substances in the nuclear power station may leak into the environment, and a great threat is formed to the surrounding ecological environment and personnel safety. Meanwhile, the problem of blocking frequently occurs, and the normal opening and closing actions of the valve are affected, so that the valve cannot respond to the control instruction of the nuclear power station system in time, and the stable operation of the whole system is damaged. Disclosure of Invention In view of the above, the invention provides a spring cylinder assembly fixture applied to a valve. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a be applied to spring cylinder assembly fixture on valve, includes base, fixed pressure equipment mechanism that sets up in base one side and along the mobilizable fly leaf that sets up on the base of base length direction, form the assembly station between fly leaf and the pressure equipment mechanism, place in the assembly station and wait to assemble the spring cylinder, set up cylinder body in the assembly station and support adjustment mechanism, cylinder body supports adjustment mechanism along the mobilizable setting of length direction of assembly station in the assembly station, cylinder body supports adjustment mechanism to wait to assemble the cylinder body in the assembly station and supports, and to wait to assemble the cylinder body and adjust the height of cylinder body in the assembly station and make wait to assemble and be in same axis between cylinder body and the pressure equipment mechanism. Preferably, the cylinder body support adjusting mechanism comprises a longitudinal support adjusting unit and a transverse moving unit, the longitudinal support adjusting unit is fixed on the transverse moving unit, a plurality of guide rails are arranged on the base, and the transverse moving unit and the movable plate are movably arranged on the corresponding guide rails. Preferably, the transverse moving unit comprises a moving vehicle and moving limiting parts, the moving limiting parts are arranged on two sides of the moving vehicle in a lifting mode, the moving vehicle is arranged on the guide rail, the moving limiting parts are pressed agai