Fixed nuclear energy steam supply valve maintenance base station

Abstract

The invention belongs to the technical field of valve maintenance, and particularly relates to a fixed nuclear energy steam supply valve maintenance base station. Comprising an actuator operability and safety functionality test verification device, a valve element sealing surface repairing device, a valve seat sealing surface repairing device and a valve part fine repairing and assembling device. The device has the beneficial effects that the operability and safety functional test verification of the actuator of the quick-closing valve can be completed offline. And the adaptability is high, and valve elements of various specifications can be ground. The device can be suitable for overhauling and testing the main steam quick isolating valve of an M310 unit and an AP1000 unit. The valve maintenance base station can independently complete operability and safety functional test verification of a quick-closing valve actuator in an off-line mode, can complete repair of a sealing face of a valve element and a valve seat of a large-diameter valve at the same time, and integrates multiple functions.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of valve maintenance, and particularly relates to a fixed nuclear energy steam supply valve maintenance base station. BACKGROUND

[0002] The quick isolation valve has certain safety function, is consistent with the type of the main steam isolation valve of the nuclear power unit, needs to verify the operability and safety functionality test, and has a large diameter and a large valve core valve seat sealing surface, so manual grinding is difficult and the precision cannot be guaranteed. SUMMARY

[0003] The application aims to provide a fixed nuclear energy steam supply valve maintenance base station which can realize the operability and safety functionality test verification of the quick closing valve actuator and valve inner part repair functions.

[0004] The technical scheme of the application is as follows: a fixed nuclear energy steam supply valve maintenance base station comprises an actuator operability and safety functionality test verification device, a valve core sealing surface repair device, a valve seat sealing surface repair device and a valve part precision repair and assembly device.

[0005] The actuator operability and safety functionality test verification device comprises an assembly tool hanging plate, a lighting lamp, a lifting rocker, a rotary assembly table, an inclinable assembly table, a second electrical control cabinet, a simulated load device, an actuator joint push rod and a base rack.

[0006] The base rack serves as the support of the device, is fixed on the floor through bolt connection, and the assembly tool plate is welded on the uppermost part of the base rack and is provided with three groups of lighting lamps, the racks of the three groups of lighting lamps are connected on the assembly tool plate through bolts, the uppermost part of the assembly tool plate is provided with the lifting rocker which can control the up-down position of the whole base rack, the lowermost part of the base rack is provided with the inclinable assembly table and the rotary assembly table which are fixedly installed through integral welding, the simulated load device is fixed on the rotary assembly table through welding, the actuator joint push rod is connected on the simulated load device through threads, the second electrical control cabinet is welded on the rightmost part of the base rack, and the second electrical control cabinet is integrated with the control console and used for controlling the simulation experiment of the simulated load device.

[0007] The valve core sealing surface repair device is supported by a valve core repair rack, the valve core repair rack is fixed on the floor by bolts, the grinding disc is fixed on the valve core repair rack by a gear set, the grinding fluid supply pipe is fixed on the valve core repair rack by welding at the bottom, the grinding fluid distribution port is installed on the grinding fluid supply pipe, the correction ring is placed on the grinding disc, the correction ring blocking arm is pressed on the valve core repair rack, the front and rear directions and the correction ring blocking arm angle are adjusted, the control panel is welded on the leftmost side of the valve core sealing surface device, the oil supply pipeline is below the valve core repair rack, the first electrical control cabinet and the grinding fluid supply tank are fixed on the ground by bolts, the oil supply pipeline is above the grinding fluid supply tank, the grinding fluid supply pump is connected with the grinding fluid supply tank by pipelines and fixed on the support by bolts, and the grinding fluid settling tank is connected with the valve core repair rack by pipelines and fixed on the support by bolts below.

[0008] The valve seat sealing surface repair device is a portable planetary grinding machine.

[0009] The valve component fine finishing and assembly device comprises a small lathe, a first radial drill press, a second radial drill press and a fine finishing table.

[0010] The small lathe is located at the lower left, the fine finishing table is located at the right, and the valve core repair device is located at the upper side, wherein the small lathe is provided with a lubricating oil supply and recovery pipeline, a lubricating oil tank is fixed on the floor by bolts, an oil drum device is fixed above the lubricating oil tank, a lubricating oil settling tank is located at the left, and the above components are connected by pipelines and fixed on the small lathe, the fine finishing table is fixed on the floor by bolts, a disassembly tool hanging plate is welded at the lowermost side of the table top, a lifting radial arm is fixed at the rightmost side of the fine finishing table, a disassembly table is fixed on the fine finishing table top by welding, and a disassembly vice is fixed on the fine finishing table top by bolts.

[0011] The beneficial effects of the present application are that the off-line execution of the fast closing valve operability, safety functional test verification can be completed. A variety of specifications of valve cores can be ground. The main steam quick isolation valve of the M310 unit and the AP1000 unit can be repaired and tested. The off-line independent execution of the fast closing valve operability, safety functional test verification can be completed, and the large-diameter valve core and valve seat sealing surface repair can be completed. The valve maintenance base station is multifunctional. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The present application provides a fixed nuclear energy steam supply valve maintenance base station;

[0013] Figure 2 The present application provides a fixed nuclear energy steam supply valve maintenance base station;

[0014] Figure 3The structure diagram for performing the actuator operability, safety function test verification;

[0015] Figure 4 The structure diagram for repairing the valve seat sealing surface;

[0016] Figure 5 The valve part fine finishing assembly.

[0017] In the figure: 1 small lathe, 2 grinding disc, 3 polishing liquid supply pipe, 4 polishing liquid distribution port, 5 control console, 6 finishing ring blocking wall, 7 finishing ring, 8 first radial drill press, 9 second radial drill press, 10 assembly tool hanging plate, 11 illuminating lamp, 12 lifting radial arm, 13 rotary assembly table, 14 tiltable assembly table, 15 blowpipe head, 16 cleaning-lubricating auxiliary table, 17 oil guide groove, 18 oil injection pipe head, 19 disassembly table, 20 disassembly vise, 21 lifting radial arm, 22 disassembly tool hanging plate, 23 tool cabinet, 24 air blower, 25 oil supply pedal, 26 oil feeding device, 27 lubricating oil tank, 28 lubricating oil settling tank, 29 polishing liquid settling tank, 30 polishing liquid supply tank, 31 rotary motor, 32 polishing liquid supply pump, 33 first electrical control cabinet, 34 second electrical control cabinet, 35 simulated load device, 36 actuator joint push rod, 37 base rack, 38 valve core repair rack. DETAILED DESCRIPTION

[0018] The application will be described in further detail below with reference to the drawings and specific embodiments.

[0019] The fixed nuclear energy steam supply valve maintenance base station provided by the application integrates the actuator operability type safety function test verification, valve core sealing surface repair, valve seat sealing surface repair, and valve fine finishing assembly functions, is used for rapid isolation of valve maintenance and actuator safety function test, and can also be used for some large-diameter valve core valve seat sealing surface repair and valve part small valve fine finishing assembly.

[0020] The fixed nuclear energy steam supply valve maintenance base station provided by the application mainly can realize four functions, which is equivalent to the integration of four systems, and specifically includes:

[0021] Function one: actuator operability, safety function test verification device;

[0022] Function two: valve core sealing surface repair device;

[0023] Function three: valve seat sealing surface repair device;

[0024] Function four: valve part fine finishing assembly device.

[0025] The actuator operability, safety functionality test verification device includes an assembly tool hanging plate 10, a lighting lamp 11, a lifting rocker arm 12, a rotating assembly table 13, an inclinable assembly table 14, a second electrical control cabinet 34, a simulated load device 35, an actuator joint push rod 36 and a base rack 37.

[0026] The base rack 37 is fixed on the floor by bolt connection. The assembly tool plate 10 is welded on the uppermost part of the base rack 37, and three sets of lighting lamps 11 are installed on the assembly tool plate 10. The racks of the three sets of lighting lamps 11 are bolted on the assembly tool plate 10. The uppermost part of the assembly tool plate 10 is provided with the lifting rocker arm 12, which can control the up-down position of the whole base rack 37. The lowermost part of the base rack 37 is provided with the inclinable assembly table 14 and the rotating assembly table 13, which are fixedly installed by integral welding. The simulated load device 35 is fixed on the rotating assembly table 13 by welding, and the actuator joint push rod 36 is threadedly connected to the simulated load device 35. The second electrical control cabinet 34 is welded on the rightmost part of the base rack 37, and is integrated with the control console 5, which can be used for controlling the simulation experiment of the simulated load device.

[0027] As shown in Figure 4 The valve core sealing surface repair device is supported by a valve core repair rack 38, which is fixed on the floor by bolts. The grinding disc 2 is fixed on the valve core repair rack 38 by a gear set, the bottom of the grinding liquid supply pipe 3 is fixed on the valve core repair rack 38 by welding, and the grinding liquid shunt 4 is installed on the grinding liquid supply pipe and can be self-adjusted in direction. The correction ring 7 is placed on the grinding disc 2. The correction ring stop arm 6 is crimped at the bottom of the valve core repair rack 38, and the forward-backward direction and the included angle of the correction ring stop arm 6 can be adjusted. The control console 5 is welded on the leftmost part of the valve core sealing surface device. The oil supply pipeline is below the valve core repair rack 38, the first electrical control cabinet 33 and the grinding liquid supply tank 30 are fixed on the ground by bolts, the oil supply pipeline is above the grinding liquid supply tank 30, the grinding liquid supply pump 32 is connected to the grinding liquid supply tank 30 by pipeline and is fixed on the bracket by bolts. The grinding liquid settling tank 29 is connected to the valve core repair rack 38 by pipeline and is fixed on the bracket below by bolts.

[0028] The valve seat sealing surface repair device is a portable planetary grinder, which is placed in the tool cabinet 23. The device can be placed on the valve body to grind the valve seat. It is electrically controlled, and the motor is connected to the planetary wheel by a chain. The motor drives the planetary wheel to rotate, and the planetary wheel grinds the valve seat.

[0029] Figure 1 The air blowing pipe head 15, the cleaning-lubricating auxiliary table 16, the oil guide groove 17, the oil injection pipe head 18 and Figure 5The fan 24, oil supply pedal 25, rotary motor 31 and other parts of the auxiliary rack are used to lubricate and clean the workpiece.

[0030] As shown in Figure 5 The valve component finishing assembly device includes a small lathe 1, a first radial drill press 8, a second radial drill press 9, and a finishing table. The small lathe 1 is on the left lower part of the whole, the right side is the finishing table, and the upper part is the valve core repair device. The small lathe 1 has a lubricating oil supply and recovery pipeline, a lubricating oil tank 27 is fixed on the floor by bolts, an oil drum device 26 is fixed above the lubricating oil tank 27, and a lubricating oil settling tank 28 is on the left. The above-mentioned components are connected together by pipelines and fixed on the small lathe 1. The finishing table on the right is fixed on the floor by bolts, a disassembly tool hanging plate 22 is welded at the lowermost part of the table top, a lifting radial arm 21 is fixed at the rightmost part of the finishing table, which can control the height of the finishing table, a disassembly table 19 is fixed on the finishing table top by welding, and a disassembly vice 20 is fixed on the finishing table top by bolts.

Claims

1. A fixed nuclear steam supply valve maintenance base station, characterized in that: include: Actuator operability and safety functionality test verification device, valve core sealing surface repair device, valve seat sealing surface repair device and valve component finishing assembly device.

2. A stationary nuclear steam supply valve maintenance base station according to claim 1, characterized in that: The actuator operability and safety functionality test verification device includes an assembly tool hanging plate, a lighting lamp, a lifting rocker arm, a rotating assembly table, a tiltable assembly table, a second electrical control cabinet, a simulated load device, an actuator joint push rod and a basic stand.

3. A stationary nuclear steam supply valve maintenance base station as claimed in claim 2, characterized in that: The basic platform serves as the support of the device. The basic platform is fixed on the floor and fixed by bolts. The assembly tool plate is welded to the top of the basic platform, and three groups of lighting lamps are installed on the assembly tool plate. The platforms of the three groups of lighting lamps are connected to the assembly tool plate by bolts. A lifting rocker arm is installed on the top of the assembly tool plate, and the lifting rocker arm can control the up and down position of the basic platform as a whole. The bottom of the basic platform is provided with a tiltable assembly table and a rotating assembly table fixedly installed by integral welding. The simulated load device is fixed to the rotating assembly table by welding, and the actuator joint push rod is connected to the simulated load device by threads. The second electrical control cabinet is welded to the rightmost side of the basic platform. The second electrical control cabinet is integrated with the control console for controlling the simulation experiment of the simulated load device.

4. The fixed nuclear steam supply valve maintenance base station according to claim 1, characterized in that: The valve core sealing surface repair device as a whole is supported by the valve core repair bench, and the valve core repair bench is fixed to the floor by bolts. The grinding disc is connected and fixed to the valve core repair bench through a gear set. The bottom of the grinding liquid supply pipe is fixed to the valve core repair bench by welding. The grinding liquid diversion port is installed on the grinding liquid supply pipe. The correction ring is placed on the grinding disc. The correction ring retaining arm is crimped on the valve core repair bench to adjust the front and rear directions and the angle between the correction ring retaining arm. The console is welded to the far left of the valve core sealing surface device. The oil supply pipeline is below the valve core repair bench. The first electrical control cabinet and the grinding liquid supply tank are fixed to the ground by bolts. The oil supply pipeline is positioned above the grinding liquid supply tank. The grinding liquid supply pump is connected to the grinding liquid supply tank through a pipeline and fixed to the bracket by bolts. The grinding liquid sedimentation tank is connected to the valve core repair bench through a pipeline, and is fixed to the bracket by bolts below.

5. The fixed nuclear steam supply valve maintenance base station according to claim 1, characterized in that: The valve seat sealing surface repairing device is a patrol planetary portable grinder, which is placed in a tool cabinet.

6. The fixed nuclear steam supply valve maintenance base station according to claim 1, characterized in that: The valve component finishing and assembling device comprises a small lathe, a first radial drilling machine, a second radial drilling machine and a finishing table.

7. A stationary nuclear steam supply valve maintenance base station as claimed in claim 6, characterized in that: The small lathe is at the lower left, with a finishing table on the right and a valve core repair device above it. The small lathe has a lubricating oil supply and recovery pipeline, the lubricating oil tank is fixed to the floor with bolts, a drum oil device is fixed above the lubricating oil tank, and a lubricating oil sedimentation tank is on the left. The above components are connected together through pipelines and fixed to the small lathe, the finishing table on the right is fixed to the floor with bolts, the disassembly tool hanging plate is welded to the bottom of the table, the lifting rocker arm is fixed to the far right of the finishing table, the disassembly table is fixed to the finishing table surface by welding, and the disassembly vise is fixed to the finishing table surface by bolts.

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