CN218710712U

CN218710712U - Pipe fitting heat treatment device

Info

Publication number: CN218710712U
Application number: CN202222968155.7U
Authority: CN
Inventors: 王昊杰; 吕明亮; 杨俏; 鲍蕾
Original assignee: Shenyang Dongbo Thermal Technology Co ltd
Current assignee: Shenyang Dongbo Thermal Technology Co ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-03-24
Anticipated expiration: 2032-11-08

Abstract

The utility model provides a pipe fitting heat treatment device, includes the annealing stove that carries out heat treatment to the pipe fitting, and the stove outer covering of annealing stove is cylindricality tubular structure, and center boiler tube sets up in the stove outer covering, and the space between center boiler tube and the stove outer covering is the heating cavity, and heating electrode sets up on the stove outer wall of covering, is equipped with the heater strip of being connected with heating electrode in the heating cavity. The first vacuum system comprises a first pipeline and a furnace tube vacuum unit, one end of the first pipeline penetrates through the side wall of the furnace shell to be communicated with a central furnace tube positioned in the furnace shell, and the other end of the first pipeline is connected with the furnace tube vacuum unit 8. The cooling system comprises a cooling circulating air pipe and a cooling fan, the upper end of the cooling circulating air pipe is communicated with the upper part of the heating chamber of the annealing furnace, the lower end of the cooling circulating air pipe is communicated with the lower part of the heating chamber of the annealing furnace, and the cooling fan is arranged on the cooling circulating air pipe. The control cabinet is used for controlling the annealing furnace, the cooling system and the first vacuum system.

Description

Pipe fitting heat treatment device

Technical Field

The utility model belongs to the technical field of metal material, concretely relates to pipe fitting heat treatment device.

Background

The pipe fitting is one of the most common parts in mechanical manufacturing, the length of the pipe fitting is far larger than the diameter of the pipe fitting, the pipe wall is extremely small, so that the pipe fitting is difficult to heat treat, is easy to deform due to various factors and is difficult to control, and the workpiece structure after heat treatment is unstable and generates aging deformation and the like.

In order to remove the processing stress generated in the processing process, the traditional heat treatment method adopts a box type heating furnace for annealing, but the surface of a workpiece is easy to oxidize, and the annealed pipe needs to be subjected to surface processing, so that the processing procedure and the processing cost are increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art exists, the utility model provides a pipe fitting heat treatment device can solve the emergence of pipe fitting oxidation problem in the annealing process, has realized vacuum annealing, atmosphere annealing, bulk heating, cooling process regulation and control, has improved the annealing effect of slim pipe fitting, has reduced the probability that the pipe fitting takes place to warp.

A pipe fitting heat treatment device comprises an annealing furnace, a first vacuum system, a control cabinet and a cooling system;

the annealing furnace comprises a furnace shell, a furnace cover, a central furnace tube and a heating electrode; the furnace cover is arranged at the upper end of the furnace shell, the central furnace tube is arranged in the furnace shell, the central furnace tube is of a cylindrical tubular structure with an opening at the upper part, and the pipe fitting can be placed in the central furnace tube; the space between the central furnace tube and the furnace shell is a heating chamber, the heating electrode is arranged on the outer side wall of the furnace shell, and a heating wire connected with the heating electrode is arranged in the heating chamber;

the first vacuum system comprises a first pipeline and a furnace tube vacuum unit, the furnace tube vacuum unit is arranged on one side of the annealing furnace, one end of the first pipeline penetrates through the side wall of the furnace shell and is communicated with a central furnace tube positioned in the furnace shell, and the other end of the first pipeline is connected with the furnace tube vacuum unit.

The cooling system comprises a cooling circulating air pipe and a cooling fan, the upper end of the cooling circulating air pipe is communicated with the upper part of the heating chamber of the annealing furnace, the lower end of the cooling circulating air pipe is communicated with the lower part of the heating chamber of the annealing furnace, and the cooling fan is arranged on the cooling circulating air pipe;

and the control cabinet is arranged on one side of the annealing furnace and is used for controlling the annealing furnace, the cooling system and the first vacuum system.

As the supplement of the technical scheme, the annealing furnace further comprises thermocouples, wherein the thermocouples are arranged on the furnace shell of the annealing furnace and are uniformly and vertically distributed on the outer side wall of the furnace shell.

As a supplement of the technical scheme, the annealing furnace further comprises a second vacuum system, wherein the second vacuum system comprises a second pipeline and a furnace body vacuum unit, the furnace body vacuum unit is arranged on one side of the annealing furnace, one end of the second pipeline is communicated with a heating chamber of the annealing furnace, and the other end of the second pipeline is connected with the furnace body vacuum unit.

As a supplement to the technical scheme, the furnace body support is further included, and the pipe fitting is placed in the central furnace pipe through the furnace body support and comprises a material tray, a quartz pipe and a support rod; the material tray is of a circular structure, through holes are uniformly distributed in the axial direction of the material tray, a quartz tube is arranged in each through hole on the material tray, a flange is arranged on the side wall of the upper end of each quartz tube, the outer diameter of each flange is larger than the diameter of each through hole on the material tray, and each quartz tube is inserted into each through hole on the material tray and is erected on the material tray through the flange; the charging tray is equipped with a plurality ofly and is vertical align to grid, and two adjacent charging trays from top to bottom pass through branch and connect and the through-hole on two adjacent charging trays from top to bottom corresponds one by one.

As a supplement to the technical scheme, the device also comprises a material taking system, wherein the material taking system comprises a fixed base, a rotating bracket, an electric push rod and a motor;

the fixed base is arranged on one side of the annealing furnace, a rotating shaft is arranged at the upper end of the fixed base through a bearing structure, the rotating support is fixedly arranged on the side wall of the annealing furnace, the rotating support comprises two fixed blocks, vertical beams and a cross beam, the two vertical beams are arranged in parallel, the fixed block is connected between the two vertical beams, one side of each fixed block, which is close to the annealing furnace, is fixedly connected with the side wall of the annealing furnace, the cross beam is connected between the two vertical beams, and the cross beam is arranged at the upper parts of the vertical beams;

the lower extreme of runing rest's perpendicular roof beam with fixed baseplate upper end pivot rotatable coupling, electric putter's upper end through the pivot structure with the crossbeam is connected, electric putter's lower extreme is connected with fixed baseplate through the pivot structure.

As the supplement of the technical scheme, 12 through holes are arranged on the material tray.

Has the advantages that: the utility model discloses a pipe fitting heat treatment device, through first vacuum system and second vacuum system's setting, can block external environment factor to the interference of heat treatment process to very big degree, realize the vacuum annealing and the atmosphere annealing heat treatment of work piece, guarantee annealing quality. The workpieces are uniformly heated by arranging a plurality of groups of heating electrodes; the flexible material taking and feeding and the heat treatment state conversion are realized through material taking. Compared with the traditional annealing process, the invention realizes the accurate control of the process, reduces the probability of deformation of the workpiece, improves the annealing effect of the slender pipe fitting and greatly improves the operating environment.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic view of the internal structure of the furnace body of the present invention.

Fig. 3 is a schematic view of the furnace body support structure of the present invention.

Fig. 4 is the structure diagram of the material taking system of the present invention.

Fig. 5 is the structure diagram of the material taking system of the present invention.

In the figure: 1. the furnace comprises an annealing furnace, 2. A furnace shell, 3. A furnace cover, 4. A central furnace tube, 5. A heating electrode, 6. A heating chamber, 7. A first pipeline, 8. A furnace tube vacuum unit, 9. A baffle valve, 10. A thermocouple, 11. A cooling circulating air pipe, 12. A cooling fan, 13. A control cabinet, 14. A second pipeline, 15. A furnace body vacuum unit, 16. A fixed base, 17. A rotary bracket, 18. An electric push rod, 19. A cold water pipeline, 20. A fixed block, 21. A vertical beam, 22. A cross beam, 23. A furnace body bracket, 24. A material tray, 25. A quartz tube, 26. A support rod, 27. A through hole and 28. A hanging ring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

As shown in fig. 1 to 5, a pipe heat treatment apparatus for performing vacuum annealing heat treatment on a pipe includes an annealing furnace 1, a first vacuum system, a control cabinet 13, and a cooling system.

The annealing furnace 1 is used for heating and annealing the pipe fitting, and comprises a furnace shell 2, a furnace cover 3, a central furnace tube 4 and a heating electrode 5 as shown in figure 2; the furnace shell 2 is of a multi-section cylindrical structure with an opening at the upper part, the upper end of the furnace shell 2 is provided with a furnace cover 3 for opening or closing the annealing furnace 1, and the upper surface of the furnace cover 3 is provided with a hanging ring 28. The central furnace tube 4 is arranged in the furnace shell 2, the central furnace tube 4 is of a cylindrical tubular structure with an opening at the upper part, the pipe fittings can be placed in the central furnace tube 4, and the upper end of the central furnace tube 4 is provided with a flange cover for sealing the central furnace tube 4. The space between central boiler tube 4 and stove outer covering 2 is heating chamber 6, and heating electrode 5 sets up on stove outer covering 2 lateral wall, heating electrode 5 is equipped with a plurality ofly and evenly arranges on the lateral wall of stove outer covering 2, be equipped with the heater strip of being connected with heating electrode 5 in the heating chamber 6, to heating electrode 5 circular telegram can make the heater strip heat up, heats central boiler tube 4 that lies in stove outer covering 2, carries out thermal treatment to the pipe fitting that lies in central boiler tube 4.

The first vacuum system is used for vacuumizing the central furnace tube 4 and comprises a first pipeline 7 and a furnace tube vacuum unit 8, wherein the furnace tube vacuum unit 8 is arranged on one side of the annealing furnace 1, one end of the first pipeline 7 penetrates through the side wall of the furnace shell 2 to be communicated with the central furnace tube 4 positioned in the furnace shell 2, and the other end of the first pipeline 7 is connected with the furnace tube vacuum unit 8.

Cooling system for carry out cooling treatment to the pipe fitting after the heating, including cooling circulation tuber pipe 11, cooling blower 12, the upper end of cooling circulation tuber pipe 11 with the upper portion intercommunication of the heating chamber 6 of annealing stove 1, the lower extreme of cooling circulation tuber pipe 11 with the lower part intercommunication of the heating chamber 6 of annealing stove 1, cooling blower 12 sets up on cooling circulation tuber pipe 11, and the during operation is located cooling blower 12 work, will be located the heat chamber 6 upper portion of annealing stove 1 and absorb, carry to cooling blower 12 position department through the cooling tuber pipe, and cooling blower 12 carries out cooling treatment to steam, then air conditioning is carried to the heating chamber 6 of annealing stove 1 in by the lower extreme position department of cooling tuber pipe, carries out cooling treatment to the heating chamber 6 in the annealing stove 1. The workpiece is rapidly cooled.

And the control cabinet 13 is arranged at one side of the annealing furnace 1 and is used for controlling the annealing furnace 1, the cooling system and the first vacuum system.

When the furnace is used, a worker firstly puts the pipe fittings into the central furnace tube 4 and then closes the flange cover and the furnace cover 3 of the central furnace tube 4. And checking the safety and reliability of all the gas circuit systems. And opening the first vacuum system, and vacuumizing the central furnace tube 4. The heat treatment process route is set by using the operation panel of the control cabinet 13. And when the vacuum degree in the furnace chamber reaches a proper vacuum degree, the heating electrode 5 is opened to heat the heating wire, and heating and heat preservation are carried out according to a set process route. After the heat treatment is completed, the annealing furnace 1 is cooled by a cooling system. And finally, when the temperature is reduced to a proper temperature, closing the heating electrode 5 and the first vacuum system, preparing for discharging the pipe fitting, and opening the furnace cover 3 for opening the furnace and taking materials.

As a supplement to the technical solution of the above embodiment, the annealing furnace 1 further includes a thermocouple 10, and the thermocouple 10 is disposed on the furnace shell 2 of the annealing furnace 1 and is used for monitoring the temperature of the heating chamber 6 of the annealing furnace 1. The thermocouples 10 are uniformly and vertically distributed on the outer side wall of the furnace shell 2, and detect the temperature of each height position of the furnace shell 2.

In addition to the above technical solution, the first vacuum system further comprises a flapper valve 9, and the flapper valve 9 is disposed on the first pipeline 7.

As the utility model discloses technical scheme's preferred technical scheme still includes second vacuum system, second vacuum system includes second pipeline 14, furnace body vacuum unit 15 sets up in one side of annealing stove 1, the one end of second pipeline 14 and the heating chamber 6 intercommunication of annealing stove 1, the other end and the furnace body vacuum unit 15 of second pipeline 14 are connected. When the first vacuum system vacuumizes the central furnace tube 4, the second vacuum system works simultaneously to vacuumize the heating chamber 6 of the annealing furnace 1, so that the heating wires of the annealing furnace 1 are prevented from being oxidized, and the service life of the annealing furnace 1 is shortened.

As the preferred technical scheme of the utility model, the furnace body support 23 is also included, the pipe fitting is placed in the central furnace tube 4 through the furnace body support 23, and comprises a material tray 24, a quartz tube 25 and a support rod 26;

the material tray 24 is of a circular structure, the outer diameter of the material tray 24 is smaller than the inner diameter of the central furnace tube 4, through holes 27 evenly distributed along the axial direction of the material tray 24 are formed in the material tray 24, a quartz tube 25 is arranged in each through hole 27 in the material tray 24, a flange is arranged on the side wall of the upper end of each quartz tube 25, the outer diameter of each flange is larger than the diameter of the through hole 27 in the material tray 24, and the quartz tubes 25 are inserted into the through holes 27 in the material tray 24 and are erected on the material tray 24 through the flanges;

the charging tray 24 is equipped with a plurality ofly and is vertical align to grid, and two adjacent charging trays 24 from top to bottom are connected through branch 26 and are corresponded one by one through-hole 27 on two adjacent charging trays 24 from top to bottom, are in same vertical direction, make the pipe fitting pass the quartz capsule 25 on each charging tray 24 from top to bottom one by one, and the purpose that is equipped with quartz capsule 25 on charging tray 24 can play and prevent the technical problem that the pipe fitting takes place to warp in the thermal treatment to the pipe fitting location.

As a preferred technical scheme of the above embodiment, each tray 24 is provided with 12 through holes 27, that is, each furnace body bracket 23 can simultaneously perform heat treatment on 12 pipes at a time.

As the utility model discloses technical scheme's preferred technical scheme, as shown in fig. 1, fig. 4 and fig. 5, still include the material taking system, the material taking system includes fixed baseplate 16, runing rest 17, electric putter 18, motor 19. The fixed base 16 is arranged at one side of the annealing furnace 1, the upper end of the fixed base 16 is provided with a rotating shaft through a bearing structure,

the rotary support 17 sets firmly on the lateral wall of annealing stove 1, and rotary support 17 includes fixed block 20, perpendicular roof beam 21, crossbeam 22, perpendicular roof beam 21 is equipped with two, and two are erected and are connected with fixed block 20 between roof beam 21 parallel arrangement and two perpendicular roof beams 21, one side that the fixed block 20 is close to annealing stove 1 is the arc structure of the indent that agrees with mutually with the stove outer covering 2 outer fringe of annealing stove 1, fixed block 20 and the lateral wall fixed connection of annealing stove 1, still is connected with crossbeam 22 between two perpendicular roof beams 21, crossbeam 22 sets up in the upper portion of erecting roof beam 21.

The lower end of the vertical beam 21 of the rotating bracket 17 is connected with the rotating shaft at the upper end of the fixed base through a bearing structure, so that the rotating bracket 17 rotates around the fixed base 16 by taking the rotating shaft as an axis. The electric push rod 18 is a telescopic rod, and a linear actuating mechanism mainly comprises a motor, a push rod, a control device and the like, can realize remote control and centralized control, and can move back and forth within a certain range of stroke. The upper end of the electric push rod 18 is connected with the cross beam 22 through a rotating shaft structure, and the lower end of the electric push rod 18 is connected with the fixed base 16 through a rotating shaft structure.

As shown in fig. 4, when the annealing furnace 1 is vertically arranged under the working condition, the rotary support 17 of the reclaiming system is in the vertical direction. As shown in fig. 5, when the annealing furnace 1 needs to be taken after annealing the workpiece, the motor 19 is driven to contract the electric push rod 18, at this time, the rotating bracket 17 rotates around the rotating shaft structure, the rotating bracket 17 drives the annealing furnace 1 to rotate, so that the annealing furnace 1 is inclined slowly from the vertical state to the fixed bracket direction, and at this time, the pipe fitting in the central furnace tube 4 is taken out conveniently.

As the utility model discloses technical scheme's preferred technical scheme, stove outer covering 2 is bilayer structure, forms stove outer covering double-layered wall structure, leads to between the two-layer stove outer covering to have the cooling water, the cooling water passes through cold water pipeline 19 and supplies with.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The pipe heat treatment device is characterized by comprising an annealing furnace (1), a first vacuum system, a control cabinet (13) and a cooling system;

the annealing furnace (1) comprises a furnace shell (2), a furnace cover (3), a central furnace tube (4) and a heating electrode (5); the upper end of the furnace shell is provided with a furnace cover (3), and the central furnace tube (4) is arranged in the furnace shell (2); a space between the central furnace tube (4) and the furnace shell (2) is a heating chamber (6), the heating electrode (5) is arranged on the outer side wall of the furnace shell (2), and a heating wire connected with the heating electrode (5) is arranged in the heating chamber (6);

the first vacuum system comprises a first pipeline (7) and a furnace tube vacuum unit (8), one end of the first pipeline (7) penetrates through the side wall of the furnace shell (2) to be communicated with a central furnace tube (4) positioned in the furnace shell (2), and the other end of the first pipeline (7) is connected with the furnace tube vacuum unit (8);

the cooling system comprises a cooling circulating air pipe (11) and a cooling fan (12), the upper end of the cooling circulating air pipe (11) is communicated with the upper part of the heating chamber (6) of the annealing furnace (1), the lower end of the cooling circulating air pipe (11) is communicated with the lower part of the heating chamber (6) of the annealing furnace (1), and the cooling fan (12) is arranged on the cooling circulating air pipe (11);

the control cabinet (13) is arranged on one side of the annealing furnace (1) and is used for controlling the annealing furnace (1), the cooling system and the first vacuum system.

2. The pipe heat treatment device according to claim 1, wherein the annealing furnace (1) further comprises a thermocouple (10), the thermocouple (10) is disposed on the furnace shell (2) of the annealing furnace (1), and the thermocouple (10) is disposed in a plurality and uniformly and vertically distributed on the outer side wall of the furnace shell (2).

3. The pipe heat treatment device according to claim 1, further comprising a second vacuum system, wherein the second vacuum system comprises a second pipeline (14) and a furnace body vacuum unit (15), one end of the second pipeline (14) is communicated with the heating chamber (6) of the annealing furnace (1), and the other end of the second pipeline (14) is connected with the furnace body vacuum unit (15).

4. The pipe heat treatment device according to claim 1, further comprising a furnace body support (23), wherein the pipe is placed in the central furnace tube (4) through the furnace body support (23), and comprises a material tray (24), a quartz tube (25) and a support rod (26); the material tray (24) is of a circular structure, through holes (27) which are uniformly distributed along the axial direction of the material tray (24) are formed in the material tray (24), a quartz tube (25) is arranged in each through hole (27) in the material tray (24), a flange is arranged on the side wall of the upper end of each quartz tube (25), the outer diameter of each flange is larger than the diameter of the through hole (27) in the material tray (24), and each quartz tube (25) is inserted into the through hole (27) in the material tray (24) and is lapped on the material tray (24) through the flange; the charging tray (24) are provided with a plurality of vertical evenly arranged charging trays, and two adjacent charging trays (24) are connected through a supporting rod (26).

5. The pipe heat treatment device according to claim 1, further comprising a material taking system, wherein the material taking system comprises a fixed base (16), a rotating bracket (17), an electric push rod (18) and a motor (19);

the fixed base (16) is arranged on one side of the annealing furnace (1), a rotating shaft is arranged at the upper end of the fixed base (16), the rotating support (17) is fixedly arranged on the side wall of the annealing furnace (1), the rotating support (17) comprises a fixed block (20), vertical beams (21) and cross beams (22), two vertical beams (21) are arranged in parallel, the fixed block (20) is connected between the two vertical beams (21), one side, close to the annealing furnace (1), of the fixed block (20) is fixedly connected with the side wall of the annealing furnace (1), the cross beam (22) is further connected between the two vertical beams (21), and the cross beam (22) is arranged on the upper portion of each vertical beam (21);

the lower extreme of the perpendicular roof beam (21) of runing rest (17) with fixed baseplate upper end pivot rotatable coupling, electric putter's (18) upper end through the pivot structure with crossbeam (22) are connected, and electric putter's (18) lower extreme is connected with fixed baseplate (16) through the pivot structure.

6. A tube heat treatment device according to claim 4, characterized in that there are 12 through holes (27) on the tray (24).