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CN-121972596-A - Forging device for thick tube plate of nuclear power equipment

CN121972596ACN 121972596 ACN121972596 ACN 121972596ACN-121972596-A

Abstract

The invention discloses a forging device for a thick tube plate of nuclear power equipment, which belongs to the technical field of tube plate forging equipment and comprises a hot melting device, a forging operation table, a tube plate calibration detection table and a conveying table, wherein the hot melting device, the forging operation table and the tube plate calibration detection table are arranged on the same side of the conveying table, and the thick tube plate passes through the hot melting device, the forging operation table and the tube plate calibration detection table in sequence during processing. The invention aims to overcome the defects that a pipe hole is easy to deviate and deform and the quality is uneven in the thick pipe plate forging process, and provides a forging device for solving the problems of poor pipe hole position precision and low finished product qualification rate in the traditional forging process.

Inventors

  • MA HUANHUAN
  • WANG RUI
  • XU FUTONG

Assignees

  • 江苏洋林晟智造科技有限公司

Dates

Publication Date
20260505
Application Date
20260324

Claims (10)

  1. 1. The forging device for the thick tube plate of the nuclear power equipment is characterized by comprising a hot melting device (1), a forging operation table (2), a tube plate calibration detection table (3) and a conveying table (4), wherein the hot melting device (1), the forging operation table (2) and the tube plate calibration detection table (3) are arranged on the same side of the conveying table (4), the thick tube plate sequentially passes through the hot melting device (1), the forging operation table (2) and the tube plate calibration detection table (3) during processing, a transmission chain (5) and a transmission gear (6) are arranged on the conveying table (4), a tube plate limiting device (7) is arranged on the transmission chain (5), and the tube plate limiting device (7) is slidingly arranged on the conveying table (4).
  2. 2. The forging device for the thick tube plate of the nuclear power equipment, as claimed in claim 1, wherein the tube plate limiting device (7) comprises a centering clamping disc (8), a bevel gear disc (9), a bevel gear (10), a clamping block chute (11), a clamping block (12) and a tube plate clamping plate (13), the centering clamping disc (8) is fixedly connected with a transmission chain (5), the bevel gear disc (9) is rotatably arranged on the bottom wall of the centering clamping disc (8) in a clamping manner, the bevel gear (10) is meshed with the bevel gear disc (9), the clamping block chute (11) is arranged on the centering clamping disc (8), the clamping block (12) slides in the clamping block chute (11) in a clamping manner, the tube plate clamping plate (13) is fixedly connected with the clamping block (12), and the tube plate clamping plate (13) is connected with the tube plate in a clamping manner.
  3. 3. The forging device for the thick tube plate of the nuclear power equipment, which is disclosed in claim 2, is characterized in that through holes are formed in the circle centers of the centering clamping disc (8) and the bevel gear disc (9), the tube plate clamping plate (13) is of an arc-shaped structure, clamping strips are arranged on the side walls of the clamping block sliding grooves (11), clamping grooves are formed in the side walls of the clamping block (12), the clamping grooves and the clamping strips are matched to ensure the sliding stability of the clamping block (12) in the clamping block sliding grooves (11), a vortex-shaped wire sliding rail (14) is arranged on the bevel gear disc (9), and a vortex-shaped wire sliding groove (15) is formed in the bottom wall of the clamping block (12).
  4. 4. A forging device for a thick tube plate of a nuclear power plant as set forth in claim 3, wherein said forging operation table (2) comprises a forging press (19), a detection end (20), a forging hammer (21) and a forging support structure (22), said forging press (19) and said hot melting device (1) are disposed on the same side of said transfer table (4), said detection end (20) slides on said forging press (19) through hydraulic engagement, said forging hammer (21) slides on said detection end (20) through hydraulic engagement, and said forging support structure (22) is fixedly disposed on said forging press (19).
  5. 5. The forging device for the thick tube plate of the nuclear power equipment, as claimed in claim 4, is characterized in that a detection disc (23) is arranged on the detection end (20), a clamping sliding groove (24) is formed in the side wall of the detection disc (23), a sliding clamping sliding block (25) is arranged in the clamping sliding groove (24), a roller is arranged on the clamping sliding block (25), a detection rod (26) in hinged connection is arranged on the bottom wall of the clamping sliding block (25), the detection rod (26) is connected with the clamping sliding block (25) through a torsion spring, and a pressure sensor is arranged on the hinge point of the clamping sliding block (25) and the detection rod (26).
  6. 6. A forging device for a thick tube plate of a nuclear power plant as set forth in claim 5, wherein a hole is formed in the center of the detection plate (23), the forging hammer (21) penetrates through the hole in the center of the detection plate (23) to forge the tube plate, the forging supporting structure (22) stretches upwards from the lower side of the centering clamping plate (8), and a supporting plate A (27) is arranged on the side wall of the forging press (19).
  7. 7. The forging device for thick tube plates of nuclear power equipment according to claim 6, wherein the tube plate calibration detection table (3) comprises a detection bracket (28), a rotation detection end (29) and a calibration table (30), the detection bracket (28) is fixedly arranged on one side where the forging operation table (2) is arranged, the rotation detection end (29) is hydraulically driven on the detection bracket (28), the calibration table (30) is arranged on the detection bracket (28), and the calibration table (30) is arranged below the rotation detection end (29).
  8. 8. The forging device for the thick tube plate of the nuclear power equipment, as set forth in claim 7, is characterized in that a driving motor (31) is arranged in the rotation detection end (29), a detection disc (32) is arranged on the driving motor (31), a telescopic chute (33) is arranged in the detection disc (32), a telescopic bracket (34) is arranged in the telescopic chute (33), a spring is arranged between the telescopic bracket (34) and the telescopic chute (33), electromagnets are arranged on the telescopic chute (33) and the telescopic bracket (34), the two groups of electromagnets are attracted with each other, and a supporting plate B (35) is arranged on the detection bracket (28).
  9. 9. The forging device for the thick tube plate of the nuclear power equipment, as set forth in claim 8, is characterized in that a laser emitter A (36) is arranged on the calibration table (30), a laser receiver A (37) is arranged at the front end of the telescopic support (34), the laser emitter A (36) is connected with the laser receiver A (37) through signals, a laser emitter B (38) is arranged on the calibration table (30), a laser receiver B (39) is arranged on the detection disc (32), the laser emitter B (38) is connected with the laser receiver B (39) through signals, and controllers are arranged on the forging operation table (2) and the tube plate calibration detection table (3).
  10. 10. The forging device for the thick tube plate of the nuclear power equipment is characterized in that the hot melting device (1) comprises a hot melting equipment bracket (16), a lifting hydraulic cylinder (17) and an electromagnetic heating tube (18), the hot melting equipment bracket (16) is placed on one side of a conveying table (4), the lifting hydraulic cylinder (17) is fixedly arranged on the hot melting equipment bracket (16), the electromagnetic heating tube (18) is fixedly arranged on the hot melting equipment bracket (16), the lifting hydraulic cylinder (17) is arranged below the electromagnetic heating tube (18), an annular supporting plate is arranged on the inner wall of the electromagnetic heating tube (18), and the supporting plate is of a structure with a wide upper part and a narrow lower part.

Description

Forging device for thick tube plate of nuclear power equipment Technical Field The invention belongs to the technical field of tube plate forging equipment, and particularly relates to a forging device for a thick tube plate of nuclear power equipment. Background The thick tube plate in the nuclear power equipment is a core pressure bearing and sealing component of key components such as a steam generator, a heat exchanger and the like, and the working environment of the thick tube plate is subjected to severe tests of high temperature, high pressure, strong corrosion and irradiation for a long time. In order to meet the severe requirements of extreme working conditions on the strength, toughness, compactness and uniformity of the material, the thick tube plate is usually manufactured by adopting a large forging process. Compared with a cast or splice welded structure, the forging can effectively crush an as-cast structure, refine grains and compact internal defects, remarkably improves the comprehensive mechanical property and fatigue resistance of the material, and is an indispensable manufacturing link for guaranteeing long-term safe and stable operation of a nuclear power station. However, in the large-scale free forging or die forging forming process of the thick tube plate, because the plastic deformation amount of metal is large and the flow is complex, and a plurality of tube hole blanks (blind holes or through holes) which are pre-processed on the plate blank lack effective restraint and positioning during forging and pressing, the holes are extremely easy to deviate, distort and even collapse in severe three-dimensional metal rheology. The method not only causes serious overdifference of the position precision of the pipe hole, brings great difficulty and waste for the subsequent expensive deep hole drilling processing, but also causes uneven tissue performance and stress state distribution of different areas of the pipe plate, and causes uneven quality of the final product. The inconsistency of the internal quality directly weakens the integral structural integrity and service reliability of the tube plate, and constitutes a prominent technical bottleneck in the manufacture of nuclear power equipment. Disclosure of Invention Aiming at the situation, in order to overcome the defects that the tube holes are easy to deviate and deform and the quality is uneven in the forging process of the thick tube plate, the invention provides the forging device of the thick tube plate of the nuclear power equipment, and the problems of poor position accuracy of the tube holes and low qualification rate of finished products in the traditional forging process are effectively solved. The forging device for the thick tube plate of the nuclear power equipment comprises a hot melting device, a forging operation table, a tube plate calibration detection table and a conveying table, wherein the hot melting device, the forging operation table and the tube plate calibration detection table are arranged on the same side of the conveying table, the thick tube plate sequentially passes through the hot melting device, the forging operation table and the tube plate calibration detection table during processing, a transmission chain and a transmission gear are arranged on the conveying table, a tube plate limiting device is arranged on the transmission chain, and the tube plate limiting device slides along the edge of the conveying table and is supported by the edge of the conveying table. Further, the tube plate is provided with an array of tube holes, the tube plate is of an upper flat and lower convex structure, and the tube holes deform and deviate in the hydraulic forging process, so that the tube holes are required to be detected after forging, and the qualification rate of the tube plate after forging is ensured. Further, the tube plate limiting device comprises a centering clamping disc, a conical tooth disc, a bevel gear, a clamping block chute, a clamping block and a tube plate clamping plate, wherein the centering clamping disc is fixedly connected with a transmission chain, the conical tooth disc is clamped and rotated on the bottom wall of the centering clamping disc, the bevel gear is meshed with the conical tooth disc and connected with the bevel gear, the clamping block chute is arranged on the centering clamping disc, the clamping block slides in the clamping block chute in a clamping manner, the tube plate clamping plate is fixedly connected with the clamping block, and the tube plate clamping plate is contacted with the tube plate in a clamping manner. Further, centre of a circle department of centering clamp plate and awl fluted disc all is equipped with the hole that runs through, and the hole guarantees that the tube sheet is pressed from both sides tightly the back, and the diapire of tube sheet can obtain the external holding power that provides, the tube sheet splint is established to the arc structure,