CN108393522B

CN108393522B - Guide rail cutting device and cutting method of high-altitude valve

Info

Publication number: CN108393522B
Application number: CN201810142589.7A
Authority: CN
Inventors: 陈英杰; 王浩; 梁义熙; 蒲俊春; 郭召生
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd
Priority date: 2018-02-11
Filing date: 2018-02-11
Publication date: 2020-03-20
Anticipated expiration: 2038-02-11
Also published as: CN108393522A

Abstract

The invention relates to a guide rail cutting device and a guide rail cutting method for a high-pressure valve. This high guide rail cutting device who puts valve includes: the fixing plate is arranged on the end face of the opening end of the vertical pipe and provided with an operation inlet communicated with the vertical pipe; the tool bit is arranged on the fixing plate and penetrates through the operation inlet, can reciprocate in the vertical direction and can freely rotate around the central axis of the tool bit, and therefore the tool bit can rotate and mill the guide rail while moving in the vertical direction. Above-mentioned guide rail cutting device can effectively cut the guide rail of high valve to be convenient for change the valve seat ring, change the valve seat ring and for changing whole valve body, can reduce equipment replacement cost. Particularly, when the guide rail cutting device is connected with the remote control equipment, the guide rail cutting device can be controlled by the remote control equipment to cut the guide rail, so that the irradiation dose of workers can be reduced.

Description

Guide rail cutting device and cutting method of high-altitude valve

Technical Field

The invention relates to the technical field of nuclear power, in particular to a guide rail cutting device and a guide rail cutting method for a high-pressure relief valve.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping (closing), adjusting, guiding, preventing counter flow, stabilizing pressure, shunting, overflowing and relieving pressure and the like. When the fluid has radioactivity, a high-pressure valve (a nuclear-grade valve) needs to be used for replacing a common valve so as to improve the safety level (for example, the high-pressure valve has the characteristics of good radiation blocking effect, longer rated service life and the like compared with the common valve).

As shown in fig. 1 to 5, the high relief valve 10 generally includes a valve body 100, a valve seat ring 14, a guide rail 16, and a weld 18, the valve body 100 includes a cross tube 110 and a vertical tube 120 located in the middle of the cross tube 110 and communicating with the cross tube 110, a central axis 104 of the vertical tube 120 is perpendicular to a central axis 102 of the cross tube 110, and the cross tube 110 includes two branch tubes 112 located at both sides of the vertical tube 120. The number of the valve seat rings 14 is two, the two valve seat rings 14 correspond to the two branch pipes 112 respectively, the valve seat rings 14 are located in the branch pipes 112, the valve seat rings 14 include sealing surfaces 14a, the sealing surfaces 14a are used for fitting with valve flaps (not shown) inserted in the riser pipes 120 to form a sealing system, the closing function of the high-pressure valve 10 is realized, and one end of the valve seat ring 14 far away from the sealing surfaces 14a is connected with the branch pipe 112 in a sealing manner through a welding seam 18. Wherein the valve flap slides in and out of the standpipe 120 along the guide rail 16. The guide rails 16 are disposed on the inner wall of the vertical tube 120 and extend into the horizontal tube 110 along the vertical direction, the number of the guide rails 16 is two, and the two guide rails 16 are disposed opposite to each other at intervals and are longitudinally arranged at intervals.

When a serious defect occurs in the sealing surface 14a of the valve seat ring 14, and the sealing surface 14a is attached to the valve flap inserted into the vertical pipe 120, a good sealing system cannot be formed, the maintenance means usually adopted is to replace the whole high-level valve 10, but the high-level valve 10 of the nuclear power plant is high in manufacturing cost, and the irradiation dose of personnel in the replacement process is high, namely, the problem of high cost and insecurity exists in replacing the whole high-level valve 10. To solve the above problem, those skilled in the art envision replacing the entire high relief valve 10 by replacing the damaged valve seat ring 14, and prior to replacing the valve seat ring 14, it is necessary to remove the weld 18 using a weld milling apparatus to separate the valve seat ring 14 from the branch pipe 112, and it is also necessary to remove the guide rail 16 in the valve body 100 using a weld milling apparatus to remove the valve seat ring 14 separated from the branch pipe 112 from the standpipe 120. A new valve seat ring 14 can then be placed into the branch pipe 112 through the standpipe 120. Finally, a new weld needs to be formed in the branch pipe 112 using a welding machine to join the branch pipe 112 to the new valve seat ring 14.

Disclosure of Invention

Accordingly, there is a need for a rail cutting apparatus and a rail cutting method for a high-level valve capable of cutting a rail.

The utility model provides a high guide rail cutting device who puts valve, high valve of putting includes valve body and guide rail, the valve body is including violently managing and being located violently manage the middle part and with violently manage the standpipe of intercommunication, the guide rail is located on the inner wall of standpipe, and extend to along vertical direction in the standpipe, be used for supplying high valve's valve clack cunning is gone into and the roll-off the standpipe, high valve's guide rail cutting device includes:

the fixing plate is arranged on the end face of the opening end of the vertical pipe and provided with an operation inlet communicated with the vertical pipe; and

the tool bit is arranged on the fixing plate and penetrates through the operation inlet, the tool bit can reciprocate in the vertical direction and can freely rotate around the central axis of the tool bit, and therefore the tool bit can rotate and mill the guide rail while moving in the vertical direction.

Above-mentioned guide rail cutting device can effectively cut the guide rail of high valve to be convenient for change the valve seat ring, change the valve seat ring and for changing whole valve body, can reduce equipment replacement cost. Particularly, when the guide rail cutting device is connected with the remote control equipment, the guide rail cutting device can be controlled by the remote control equipment to cut the guide rail, so that the irradiation dose of workers can be reduced.

In one embodiment, the device further comprises a supporting mechanism, a vertical mechanism and a rotating mechanism;

the supporting mechanism comprises a cylinder body, a first annular plate, a supporting rod and a second annular plate, the cylinder body is arranged on the fixed plate and is communicated with the operation inlet, the first annular plate is sleeved on one end, far away from the fixed plate, of the cylinder body, one end of the supporting rod is connected with the first annular plate, and the other end of the supporting rod is connected with the second annular plate;

the vertical mechanism comprises a vertical power part, a connecting plate and a vertical transmission rod, the vertical power part is arranged on the first annular plate, the connecting plate is positioned between the first annular plate and the second annular plate, the vertical transmission rod penetrates through the connecting plate, one end of the vertical transmission rod is connected with the second annular plate, the other end of the vertical transmission rod penetrates through the first annular plate and is connected with the vertical power part, and the cutter head is arranged on the connecting plate;

the rotary mechanism comprises a rotary power piece and a rotary shaft, the rotary power piece is arranged on the connecting plate, the rotary shaft is connected with the rotary power piece and penetrates through the connecting plate, and one end of the rotary power piece, far away from the rotary shaft, is connected with the cutter head.

In one embodiment, the rotating mechanism further includes a sleeve, the sleeve is sleeved on the rotating shaft and connected with the rotating power member, the sleeve is arranged on the cylinder in a penetrating manner and connected with the cylinder in a sliding manner, and the tool bit is located outside one end of the sleeve, which is far away from the rotating power member.

In one embodiment, the inner wall of the cylinder body is provided with a sliding groove, the sliding groove extends in the vertical direction, the inner wall of the sliding groove comprises two first inclined planes with opposite inclination directions, and the larger opening ends of the two first inclined planes face the sleeve;

the outer wall of the sleeve is provided with a convex block, the convex block is arranged in the sliding groove and comprises two second inclined planes, and the two second inclined planes are respectively attached to the two first inclined planes.

In one embodiment, the rotating mechanism further comprises a mating block;

first mounting groove has been seted up to the inner wall of barrel, the cooperation piece is located in the first mounting groove, just the cooperation piece with the connection can be dismantled to the barrel, the spout is seted up in on the cooperation piece, the second mounting groove has been seted up to telescopic outer wall, the lug is located in the second mounting groove, just the lug with the connection can be dismantled to the sleeve.

In one embodiment, the cutting head is also longitudinally reciprocable.

In one embodiment, the cutting head is also capable of reciprocating in a transverse direction.

In one embodiment, the device further comprises a longitudinal sliding mechanism and a transverse sliding mechanism;

the longitudinal sliding mechanism comprises a longitudinal sliding rail, a longitudinal sliding plate and a longitudinal power piece, the longitudinal sliding rail is arranged on the fixing plate, the longitudinal sliding plate is connected with the longitudinal sliding rail in a sliding manner, and the longitudinal power piece is connected with the longitudinal sliding plate;

the transverse sliding mechanism comprises a transverse sliding rail, a transverse sliding plate and a transverse power piece, the transverse sliding rail is arranged on the longitudinal sliding plate, the transverse sliding plate is connected with the transverse sliding rail in a sliding manner, and the transverse power piece is connected with the transverse sliding plate;

the transverse sliding plate is provided with a first through hole communicated with the operation inlet, the longitudinal sliding plate is provided with a second through hole communicated with the operation inlet, the cutter head is arranged on the transverse sliding plate, and the cutter head can sequentially penetrate through the first through hole, the second through hole and the operation inlet to enter the vertical pipe.

In one embodiment, the longitudinal power member comprises a longitudinal motor, a longitudinal transmission rod and a longitudinal belt, the longitudinal motor and the longitudinal transmission rod are connected through the longitudinal belt, and the longitudinal transmission rod is connected with the longitudinal sliding plate;

the transverse power part comprises a transverse motor, a transverse transmission rod and a transverse belt, the transverse motor is connected with the transverse transmission rod through the transverse belt, and the transverse transmission rod is connected with the transverse sliding plate.

A guide rail cutting method of a high-pressure valve comprises the following steps:

providing a guide rail cutting device of the high-level valve; and

and controlling the cutter head to rotationally mill the guide rail while moving along the vertical direction, wherein the thickness of the milled guide rail in the longitudinal direction is 1 mm-1.5 mm.

Drawings

FIG. 1 is a perspective view of a high relief valve;

FIG. 2 is a front view of the high relief valve;

FIG. 3 is a top plan view of the high relief valve of FIG. 2;

FIG. 4 is a cross-sectional view taken along line AA in FIG. 2;

FIG. 5 is a cross-sectional view taken along line BB of FIG. 2;

fig. 6 is a perspective view illustrating the guide rail cutting device of the high relief valve, the tooling plate and the high relief valve in an assembled state according to an embodiment;

FIG. 7 is a perspective view of the fixing plate, the longitudinal sliding mechanism and the lateral sliding mechanism shown in FIG. 6 in an assembled state;

FIG. 8 is a perspective view of the cutting head, support mechanism, vertical mechanism, and rotary mechanism shown in FIG. 6 in an assembled state;

FIG. 9 is an exploded view of the cartridge shown in FIG. 6;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

fig. 11 is a perspective view of the rotating mechanism and the cutter head in an assembled state;

FIG. 12 is a perspective view of FIG. 11 with the sleeve removed;

FIG. 13 is an exploded view of the sleeve shown in FIG. 11;

FIG. 14 is an enlarged view of a portion of FIG. 13 at D;

FIG. 15 is a schematic view of the tooling plate shown in FIG. 6;

fig. 16 is a schematic view of the structure of the back surface of the tooling plate shown in fig. 15.

Detailed Description

The following describes the guide rail cutting device and the cutting method of the high relief valve with reference to the accompanying drawings and specific embodiments.

In this embodiment, the vertical direction, the horizontal direction and the vertical direction respectively correspond to the Z axis, the X axis and the Y axis in the rectangular spatial coordinate system, wherein the vertical direction, the horizontal direction and the vertical direction respectively represent the Z axis, the X axis and the Y axis, the vertical tube and the vertical plate are respectively parallel to the Z axis, and the horizontal tube and the horizontal plate are respectively parallel to the X axis.

As shown in fig. 6, 7 and 8, the rail cutting device 20 of the high pressure valve according to an embodiment includes a fixing plate 200, a cutter head 300, a longitudinal sliding mechanism 400, a transverse sliding mechanism 500, a supporting mechanism 600, a vertical mechanism 700 and a rotating mechanism 800.

As shown in fig. 1, 6 and 7, the fixing plate 200 is disposed on the end surface 122 of the open end of the vertical tube 120. The fixed plate 200 is opened with an operation inlet 210 communicating with the standpipe 120. The cutter head 300 is disposed on the fixing plate 200 and penetrates the operation inlet 210.

The tool bit 300 is capable of reciprocating in the vertical direction and is capable of freely rotating (360 ° rotation) about its central axis, so that the tool bit 300 is capable of rotating the milling rail 16 while moving in the vertical direction.

Further, in the present embodiment, the tool bit 300 can also move back and forth in the transverse direction, so as to adjust the positions of the tool bit 300 and the guide rail 16, and thus the tool bit 300 and the guide rail 16 are in a preferred milling position.

Further, in this embodiment, the tool tip 300 is capable of longitudinally reciprocating, such that after milling one rail 16, the tool tip 300 may be longitudinally moved to an opposite direction to mill another rail 16. In addition, in the embodiment, in order to prevent the cutter head 300 from being damaged due to overheating, the thickness (the thickness in the longitudinal direction) of the guide rail 16 of the cutter head 300 is controlled to be 1mm to 1.5mm each time, so that one guide rail 16 can be milled for many times, and after one milling, the cutter head 300 is controlled to move 1mm to 1.5mm in the longitudinal direction to perform the next milling. In addition, the cutting head 300 can move back and forth along the longitudinal direction, so that the positions of the cutting head 300 and the guide rail 16 can be adjusted, and the cutting head 300 and the guide rail 16 are in a better milling position.

In the present embodiment, the longitudinal sliding mechanism 400 controls the cutter head 300 to reciprocate in the longitudinal direction, and the lateral sliding mechanism 500 controls the cutter head 300 to reciprocate in the lateral direction. The supporting mechanism 600 is used for supporting and carrying the vertical mechanism 700 and the rotating mechanism 800, the vertical mechanism 700 is used for controlling the cutter head 300 to reciprocate along the vertical direction, and the rotating mechanism 800 is used for controlling the cutter head 300 to freely rotate around the central axis of the cutter head 300.

As shown in fig. 7, the longitudinal sliding mechanism 400 further includes a longitudinal sliding rail 410, a longitudinal sliding plate 420, and a longitudinal power member 430, the longitudinal sliding rail 410 is disposed on the fixing plate 200, the longitudinal sliding plate 420 is slidably connected to the longitudinal sliding rail 410, and the longitudinal power member 430 is connected to the longitudinal sliding plate 420. The lateral sliding mechanism 500 includes a lateral sliding rail 510, a lateral sliding plate 520, and a lateral power member 530, wherein the lateral sliding rail 510 is disposed on the longitudinal sliding plate 420, the lateral sliding plate 520 is slidably connected to the lateral sliding rail 510, and the lateral power member 530 is connected to the lateral sliding plate 520. The cross slide plate 520 defines a first through hole 522 communicating with the operation inlet 210, and the longitudinal slide plate 420 defines a second through hole 422 communicating with the operation inlet 210. The cutting head 300 is disposed on the cross slide plate 520, and the cutting head 300 can sequentially pass through the first through hole 522, the second through hole 422 and the operation inlet 210 to enter the standpipe 120. Wherein, when the transverse power member 530 drives the transverse sliding plate 520 to slide back and forth along the transverse sliding rail 510, the cutter head 300 can move back and forth along the transverse direction. When the longitudinal power member 430 drives the longitudinal sliding plate 420 to slide back and forth along the longitudinal sliding rail 410, the transverse sliding mechanism 500 and the cutter head 300 can move back and forth along the longitudinal direction.

Further, in the present embodiment, the longitudinal power member 430 includes a longitudinal motor 432, a longitudinal transmission rod 434 and a longitudinal belt 436, the longitudinal motor 432 and the longitudinal transmission rod 434 are connected by the longitudinal belt 436, and the longitudinal transmission rod 434 is connected with the longitudinal sliding plate 420. When the longitudinal motor 432 works, the longitudinal motor 432 drives the longitudinal transmission rod 434 to rotate, and further drives the transverse sliding mechanism 500 and the cutter head 300 to reciprocate along the longitudinal direction. The transverse power member 530 includes a transverse motor 532, a transverse drive rod 534 and a transverse belt 536, the transverse motor 532 and the transverse drive rod 534 being connected by the transverse belt 536, the transverse drive rod 534 being connected to the transverse sled 520. When the transverse motor 532 works, the transverse motor 532 drives the transverse transmission rod 534 to rotate, and further drives the cutter head 300 to reciprocate along the transverse direction.

As shown in fig. 6, 8 and 9, the support mechanism 600 includes a cylinder 610, a first annular plate 620, a support rod 630 and a second annular plate 640.

The cylinder 610 is disposed on the fixing plate 200 and is communicated with the operation inlet 210, and the first annular plate 620 is sleeved on an end of the cylinder 610 far away from the fixing plate 200. Specifically, in the present embodiment, the cylinder 610 includes a body 612, a first connection ring 614 and a second connection ring 616, and the first connection ring 614 and the second connection ring 616 are respectively sleeved at two ends of the body 612. The body 612 is inserted through the first through hole 522 of the cross slide plate 520 and the second through hole 422 of the longitudinal slide plate 420, and the surface of the first connection ring 614 away from the second connection ring 616 is connected with the cross slide plate 520. The first annular plate 620 is sleeved on the cylinder 610 and connected to a surface of the second connection ring 616 away from the first connection ring 614.

The support bar 630 is connected to the first annular plate 620 at one end and to the second annular plate 640 at the other end. In the present embodiment, the number of the support rods 630 is plural, and the plural support rods 630 are spaced around the common central axis of the first annular plate 620 and the second annular plate 640. Specifically, in the present embodiment, the number of the support bars 630 is four.

The vertical mechanism 700 includes a vertical power member 710, a connecting plate 720, and a vertical transmission rod 730. The vertical power member 710 is provided on the first annular plate 620. The connecting plate 720 is located between the first annular plate 620 and the second annular plate 640 for carrying the tool tip 300. The vertical transmission rod 730 is arranged on the connecting plate 720 in a penetrating way, and one end of the vertical transmission rod 730 is connected with the second annular plate 640, while the other end thereof passes through the first annular plate 620 and is connected with the vertical power member 710. Specifically, in this embodiment, the vertical power member 710 includes a vertical motor 712 and a vertical belt 714, and the vertical motor 712 and the vertical transmission rod 730 are connected by the vertical belt 714. When the vertical power member 710 operates, the vertical power member 710 drives the vertical transmission rod 730 to rotate, thereby driving the connection plate 720 to reciprocate vertically, and further driving the cutter head 300 to reciprocate vertically.

Further, in this embodiment, the vertical mechanism 700 further includes a guide rod 740, the guide rod 740 is disposed on the connecting plate 720, and two ends of the guide rod 740 are connected to the first annular plate 620 and the second annular plate 640 respectively.

As shown in fig. 8, 11 and 12, the rotating mechanism 800 includes a rotating power member 810 and a rotating shaft 820, the rotating power member 810 is disposed on the connecting plate 720, and the rotating shaft 820 is connected to the rotating power member 810 and passes through the connecting plate 720. The end of the shaft 820 remote from the rotary power element 810 is connected to the cutter head 300. When the rotary power member 810 operates, the rotary shaft 820 rotates and rotates the cutter head 300.

Further, in this embodiment, the rotary power member 810 is a hydraulic motor, and the rotary power member 810 supplies high-pressure oil to the external hydraulic pump station, so that the rotary power member rotates under the driving of the high-pressure oil, thereby providing milling power for the cutter head 300.

Further, in the present embodiment, the rotating shaft 820 has a hollow structure, and the weight is ensured to be the lightest on the premise of ensuring the strength and the rigidity.

Further, in the embodiment, the rotating mechanism 800 further includes a sleeve 830, the sleeve 830 is sleeved on the rotating shaft 820 and connected to the rotating power component 710 (the vertical motor 712), and the sleeve 830 is disposed on the cylinder 610 and slidably connected to the cylinder 830. The cutting head 300 is located outside the end of the sleeve 830 remote from the rotary power member 710. Further, as shown in fig. 9, 10, 13 and 14, in this embodiment, a sliding groove 6182 is formed in the inner wall of the cylinder 610, and the sliding groove 6182 extends in the vertical direction. The inner wall of the chute 6182 comprises two first inclined surfaces 6181 with opposite inclination directions, and the larger open ends of the two first inclined surfaces 6181 face the sleeve 830. The outer wall of the sleeve 830 is provided with a projection 832, and the projection 832 is arranged in the sliding groove 6182. The bump 832 includes two second inclined surfaces 8322, and the two second inclined surfaces 8322 are respectively attached to the two first inclined surfaces 6181.

Further, in this embodiment, the barrel 610 further includes a fitting block 618, the inner wall of the barrel 610 is provided with a first mounting groove 610a, the fitting block 618 is disposed in the first mounting groove 610a, the fitting block 618 is detachably connected to the barrel 610, and the sliding groove 6182 is disposed on the fitting block 618. The outer wall of the sleeve 830 is formed with a second mounting groove 830a, the protrusion 832 is disposed in the second mounting groove 830a, and the protrusion 832 is detachably connected with the sleeve 830.

Further, as shown in fig. 6, in the present embodiment, the rail cutting device 20 is assembled to the tooling plate 30 through the fixing plate 200. This greatly facilitates assembly of the rail cutter assembly 20 to the overhead valve 10.

Specifically, as shown in fig. 1, a boss 124 is disposed on an end surface 122 of the open end of the vertical pipe 120, a plurality of first mounting holes 126 are disposed on the end surface 122 of the open end of the vertical pipe 120, and the plurality of first mounting holes 126 are arranged around the boss 124 at intervals.

As shown in fig. 6, 15, and 16, the tool plate 30 is provided with operation through holes 32 penetrating through both opposite surfaces of the tool plate 30. A groove 34 corresponding to the boss 124 is formed in one surface of the tooling plate 30, the tooling plate 30 is arranged on the end face 122 of the opening end of the vertical pipe 120, the boss 124 is located in the groove 34, and the operation through hole 32 is communicated with the vertical pipe 120. The tooling plate 30 can rotate about the boss 124. In this manner, it is ensured that the tooling plate 30 is parallel to the end face 122 of the open end of the standpipe 120. The tooling plate 30 is provided with a plurality of second mounting holes 36 penetrating through two opposite surfaces of the tooling plate 30, the number of the second mounting holes 36 is multiple, and the tooling plate 30 is fixed on the vertical pipe 120 through threaded columns penetrating through the second mounting holes 36 and the first mounting holes 126.

Further, in the present embodiment, the center axis 30a of the tooling plate 30 is parallel to the center axis 102 of the cross tube 110. The tooling plate 30 is provided with a plurality of third mounting holes 38, the plurality of third mounting holes 38 are arranged in a plurality of rows, and the central axis 30b of each row of third mounting holes 38 is parallel to the central axis 30a of the tooling plate 30. A fourth mounting hole (not shown) is formed in the fixing plate 200, and the tooling plate 30 and the fixing plate 200 can be fixedly connected through a threaded post penetrating through the third mounting hole 38 and the fourth mounting hole.

Further, in this embodiment, a method for cutting a guide rail of a high relief valve includes the following steps:

step S910, providing the above-mentioned guide rail cutting device for the high relief valve.

Step S920, controlling the tool bit to move along the vertical direction and simultaneously rotate the milling guide rail, wherein the thickness of the milling guide rail in the longitudinal direction is 1 mm-1.5 mm.

The traditional maintenance means is to replace the whole valve body. The equipment cost of the nuclear power station is high, and the irradiation dose of personnel in the replacement process is high. Therefore, the guide rail milling equipment 20 is developed, and the guide rail milling equipment is controlled to work through the remote control equipment, so that the replacement of the valve seat ring is facilitated, the equipment replacement cost is reduced, and the exposure dose of workers is reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a high guide rail cutting device who puts valve, high valve of putting includes valve body and guide rail, the valve body is including violently managing and being located violently manage the middle part and with violently manage the standpipe of intercommunication, the guide rail is located on the inner wall of standpipe, and extend to along vertical direction in the standpipe, be used for supplying high valve's valve clack cunning is gone into and the roll-off the standpipe, the figure of guide rail is two, two the guide rail is along vertically arranging, its characterized in that, high valve's guide rail cutting device includes:

the tooling plate is arranged on the end face of the opening end of the vertical pipe and provided with an operation through hole penetrating through two opposite surfaces of the tooling plate;

the fixing plate is arranged on the tooling plate, an operation inlet is formed in the fixing plate, and the operation inlet is communicated with the vertical pipe through the operation through hole; and

the cutter head is arranged on the fixed plate and penetrates through the operation inlet, can reciprocate in the vertical direction and can freely rotate around the central axis of the cutter head, so that the cutter head can rotate and mill the guide rail while moving in the vertical direction;

the central axis of the tooling plate is parallel to the central axis of the transverse pipe, a plurality of third mounting holes are formed in the tooling plate, the plurality of third mounting holes are arranged in multiple rows, the central axis of each row of third mounting holes is parallel to the central axis of the tooling plate, a fourth mounting hole is formed in the fixing plate, and the tooling plate is fixedly connected with the fixing plate through threaded columns which penetrate through the third mounting holes and the fourth mounting holes;

the guide rail cutting device of the high-level valve further comprises a supporting mechanism, a vertical mechanism and a rotating mechanism;

the rotating mechanism comprises a rotating power piece and a rotating shaft, the rotating power piece is arranged on the connecting plate, the rotating shaft is connected with the rotating power piece and penetrates through the connecting plate, and one end, far away from the rotating power piece, of the rotating shaft is connected with the cutter head;

the rotating mechanism further comprises a sleeve, the sleeve is sleeved on the rotating shaft and connected with the rotating power part, the sleeve penetrates through the barrel and is connected with the barrel in a sliding mode, and the cutter head is located at the position, away from the rotating power part, of the sleeve.

2. The guide rail cutting device for the high-level valve according to claim 1, wherein a sliding groove is formed in the inner wall of the cylinder, the sliding groove extends in the vertical direction, the inner wall of the sliding groove comprises two first inclined surfaces with opposite inclination directions, and the larger opening ends of the two first inclined surfaces face the sleeve;

3. The high relief valve guide rail cutting device of claim 2, wherein the rotating mechanism further comprises a mating block;

4. The high relief valve guide rail cutting device of claim 1, wherein the cutting head is further capable of reciprocating in a longitudinal direction.

5. The high relief valve guide rail cutting device of claim 1, wherein the cutter head is further capable of reciprocating in a lateral direction.

6. The guide rail cutting device of the high level valve according to claim 1, further comprising a longitudinal sliding mechanism and a transverse sliding mechanism;

7. The guide rail cutting device of the high relief valve according to claim 6, wherein the longitudinal power member comprises a longitudinal motor, a longitudinal transmission rod and a longitudinal belt, the longitudinal motor and the longitudinal transmission rod are connected through the longitudinal belt, and the longitudinal transmission rod is connected with the longitudinal sliding plate;

8. A guide rail cutting method of a high-pressure valve is characterized by comprising the following steps:

providing a rail cutting device of the high relief valve according to any one of claims 1 to 7; and