CN201367162Y

CN201367162Y - Pressing structure of end enclosure branch pipe and pressing device thereof

Info

Publication number: CN201367162Y
Application number: CNU200920115549XU
Authority: CN
Inventors: 卢军; 蔡丽萍; 吴承君; 傅建华
Original assignee: NINGBO LIANTONG EQUIPMENT MANUFACTURING Co Ltd
Current assignee: NINGBO LIANTONG EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2009-12-23
Anticipated expiration: 2019-03-12

Abstract

The utility model relates to a pressing structure of an end enclosure branch pipe, comprising a pre-manufactured end enclosure; wherein at least one branch pipe is pressed on the inner wall of the end enclosure, the branch pipe wall and the inner wall of the end enclosure are in a connecting structure which is formed by externally extending from the inner wall of the end enclosure; a pressing device of the end enclosure branch pipe comprises a hydraulic machine with a pressure lever, the lower end of the pressure lever is detachably connected with a semi-spherical compression die, and an induction heater is arranged at the periphery of the compression die in a surrounding way; the induction heater and an induction heater connecting rack are fixedly arranged by an induction heater fixing bracket, and the induction heater is correspondingly arranged at the position of a through hole of the pre-manufactured end enclosure. The connection of the end enclosure with the branch pipe structure and a connecting pipe adopts butt-welding without fillet welding line, high straining area is avoided, so as to lead the structure to be more reliable and safe and to be easy to inspect, the product has the advantages of artistic appearance and little surface scale.

Description

The pressing structure of closing end branch pipe and pressure setting thereof

Technical field

The utility model relates to end socket and makes the field, relates in particular to the pressing structure and the pressure setting thereof of closing end branch pipe.

Background technology

At present, end socket is applied to more and more widely fields such as oil, chemical industry, electric power and environmental protection, because in actual application, the part end socket need connect connection pipe on end socket, in the prior art, the method that being connected of end socket and connection pipe be to adopt fillet welding realizes that one and the suitable through hole of connection pipe diameter are left in the position that promptly at first needs to connect connection pipe on end socket, and then with opening part and this through hole weld together of connection pipe.Usually all have following problem in such a way but adopt: not only weld inspection difficulty, and product design can not get guaranteeing that the Joint strenght of junction is difficult to control, and is difficult for reinforcement.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, and a kind of reliable in structure and safety are provided, check easily, the pressing structure of the big closing end branch pipe of junction intensity.

Technical problem to be solved in the utility model is the present situation at prior art, provides a kind of device advantages of simple, the pressure setting of easy to operate fast speed closing end branch pipe.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the pressing structure of closing end branch pipe, include prefabricated end socket, wherein: described end socket inwall is suppressed with at least one arm, described branch pipe wall and end socket inwall are conjoined structure, and are stretched out and constituted by the end socket inwall.

The pressure setting of closing end branch pipe, wherein: comprise the hydraulic compressor that has depression bar, the lower end detachable of depression bar connects hemispherical pressing mold, and the periphery of pressing mold is surrounded with induction heater; Induction heater is through induction heater fixed mount and the fixed installation of induction heater link span, and induction heater can corresponding be arranged on the through hole of prefabricated end socket.Above-mentioned pressing mold is irregular hemisphere structure, and induction heater is a medium frequency induction heater.

In the utility model, the pressing speed of depression bar depends on the material and the size of arm, and universal law is: the fltting speed of the material that intensity is big under the condition of high temperature is less, and the fltting speed of the arm that size is big is less; Because arm requires to pull out mouthful evenly on the end socket, dimensional accuracy height, material evenly do not have internal defect etc. between hole and hole, therefore, guarantee in the pressing process that suitable heating-up temperature is extremely important, under this temperature, material is heated evenly, guarantee the extension of metal proper flow, as a rule, the temperature of arm depends on the raw-material sinter point of arm during compacting, the temperature of arm that sinter point is high more when then suppressing is also high more, if temperature is low excessively, ftracture easily, speed of production is slow; Temperature is too high, is easy to generate burning, and the attenuate amount is big, also causes to waste energy.

Compared with prior art, the utility model end socket inwall is suppressed with at least one arm, described branch pipe wall and end socket inwall are conjoined structure, and stretch out and constitute by the end socket inwall, the pressure setting of closing end branch pipe comprises the hydraulic compressor that has depression bar, the lower end detachable of depression bar connects hemispherical pressing mold, and the periphery of pressing mold is surrounded with induction heater; Induction heater is through induction heater fixed mount and the fixed installation of induction heater link span, and induction heater can corresponding be arranged on the through hole of prefabricated end socket.The pressure-formed closing end branch pipe of repressed device can adopt butt welding when being connected with connection pipe, and no fillet weld has been avoided high strain regions, thereby makes the more reliable and safety of structure, check easily, and junction intensity is big, does not need reinforcement, has saved material; And this technological operation is simple, and this apparatus structure is simple, and it is convenient to implement, and product has good looking appearance, size is accurate, surfaces externally and internally is smooth, the advantage that surface scale is few.

Description of drawings

Fig. 1 is the utility model pressing structure scheme drawing one;

Fig. 2 is the utility model pressing structure scheme drawing two.

The specific embodiment

Below in conjunction with embodiment the utility model is described in further detail:

Fig. 1 is to shown in Figure 2, the pressing structure of closing end branch pipe includes prefabricated end socket 1, and wherein: described end socket 1 inwall is suppressed with at least one arm 1a, described arm 1a tube wall and end socket 1 inwall are conjoined structure, and are stretched out and constituted by end socket 1 inwall.

The pressure setting of closing end branch pipe, wherein: comprise the hydraulic compressor 2 that has depression bar 2a, the lower end detachable of described depression bar 2a connects hemispherical pressing mold 3, and the periphery of described pressing mold 3 is surrounded with induction heater 6; Described induction heater 6 is through induction heater fixed

mount

4 and 5 fixed installations of induction heater link span, and described induction heater 6 can corresponding be arranged on the through hole 1b place of prefabricated end socket 1.Above-mentioned pressing mold 3 is irregular hemisphere structure, and described induction heater 6 is a medium frequency induction heater.

Embodiment 1, and the material of arm is a carbon steel in the pressing process of present embodiment:

The pressing process of closing end branch pipe may further comprise the steps:

Step 1: opening step need to determine the position of pressure-formed at least one arm 1a on the end socket on prefabricated end socket 1, and the center-point of definite this position, be the center of circle then with the center-point, on end socket 1, leave through hole 1b with the corresponding number of arm 1a, the diameter of through hole 1b is 0.1 times to 0.9 times of corresponding arm 1a diameter after the moulding, position and direction according to arm 1a, adjust end socket 1 placement location, the feasible arm 1a opening that will extrude vertically downward, and is again that end socket 1 opening is also fixing up standby;

Step 2: hydraulic compressor, pressing mold step in place are placed hydraulic compressor 2 on the opening direction of fixing end socket 1, the depression bar 2a lower end detachable of hydraulic compressor 2 connects the bottom surface of hemispherical pressing mold 3, the internal diameter of arm 1a equates after the bottom surface diameter of pressing mold 3 and the moulding, and pressing mold 3 is installed in the inboard of end socket 1, adjust the position of pressing mold 3 then, make the center-point of the centrally aligned through hole 1b of pressing mold 3, and through hole 1b center-point is on the line of centers of pressing mold 3;

Step 3: induction heater step in place is arranged on the periphery of pressing mold 3 by induction heater fixed mount 4 and induction heater link span 5 with induction heater 6, and near through hole 1b, the lower end of induction heater 6 is 8 millimeters apart from the distance of end socket;

Step 4: the compression moulding step continues to heat by 6 couples of pressure-formed arm 1a of needs of induction heater place, temperature in the compacting scope is controlled at 850 ℃, start hydraulic compressor 2 again, making depression bar 2a drive pressing mold 3 moves to through hole 1b place, fltting speed is 226 mm/min, make pressing mold 3 touch the edge of through hole 1b and continue to press down, make the edge of through hole 1b produce plastic deformation, and be coated on the sphere of pressing mold 3 outstanding to end socket 1 outside, pass through through hole 1b fully until pressing mold 3, thereby form the arm 1a of the bottom surface equal diameters of internal diameter and pressing mold 3 in end socket 1 outside, be incubated immediately after compacting is finished, it is slowly cooled off; The heated perimeter of induction heater 6 is to be the border circular areas in the center of circle with the center-point, and the diameter of this border circular areas is chosen as 1.8 times of bottom surface diameter of pressing mold 3.

Step 5: the polishing, the shaping step to arm 1a polish, shaping.To the arm shaping of polishing, to satisfy the drawing dimensional characteristic.

Embodiment 2, and the material of arm is an alloy steel in the pressing process of present embodiment:

The pressing process of closing end branch pipe may further comprise the steps:

Step 3: induction heater step in place is arranged on the periphery of pressing mold 3 by induction heater fixed mount 4 and induction heater link span 5 with induction heater 6, and near through hole 1b, the lower end of induction heater 6 is 12 millimeters apart from the distance of end socket;

Step 4: the compression moulding step continues to heat by 6 couples of pressure-formed arm 1a of needs of induction heater place, temperature in the compacting scope is controlled at 1050 ℃, start hydraulic compressor 2 again, making depression bar 2a drive pressing mold 3 moves to through hole 1b place, fltting speed is 450 mm/min, make pressing mold 3 touch the edge of through hole 1b and continue to press down, make the edge of through hole 1b produce plastic deformation, and be coated on the sphere of pressing mold 3 outstanding to end socket 1 outside, pass through through hole 1b fully until pressing mold 3, thereby form the arm 1a of the bottom surface equal diameters of internal diameter and pressing mold 3 in end socket 1 outside, be incubated immediately after compacting is finished, it is slowly cooled off; The heated perimeter of induction heater 6 is to be the border circular areas in the center of circle with the center-point, and the diameter of this border circular areas is 1.5 times of bottom surface diameter of pressing mold 3.

Embodiment 3, and the material of arm is a corrosion-resistant steel in the pressing process of present embodiment:

The pressing process of closing end branch pipe may further comprise the steps:

Step 4: the compression moulding step continues to heat by 6 couples of pressure-formed arm 1a of needs of induction heater place, temperature in the compacting scope is controlled at 1000 ℃, start hydraulic compressor 2 again, making depression bar 2a drive pressing mold 3 moves to through hole 1b place, fltting speed is 100 mm/min, make pressing mold 3 touch the edge of through hole 1b and continue to press down, make the edge of through hole 1b produce plastic deformation, and be coated on the sphere of pressing mold 3 outstanding to end socket 1 outside, pass through through hole 1b fully until pressing mold 3, thereby form the arm 1a of the bottom surface equal diameters of internal diameter and pressing mold 3 in end socket 1 outside, be incubated immediately after compacting is finished, it is slowly cooled off; The heated perimeter of induction heater 6 is to be the border circular areas in the center of circle with the center-point, and the diameter of this border circular areas is 1.5 times of bottom surface diameter of pressing mold 3.

Though the utility model is described by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.

Claims

1, the pressing structure of closing end branch pipe, include prefabricated end socket (1), it is characterized in that: described end socket (1) inwall is suppressed with at least one arm (1a), and described arm (1a) tube wall and end socket (1) inwall are conjoined structure, and are stretched out and constituted by end socket (1) inwall.

2, the pressure setting of closing end branch pipe is characterized in that: comprise the hydraulic compressor (2) that has depression bar (2a), the lower end detachable of described depression bar (2a) connects hemispherical pressing mold (3), and the periphery of described pressing mold (3) is surrounded with induction heater (6); Described induction heater (6) is through induction heater fixed mount (4) and induction heater link span (5) fixed installation, and described induction heater (6) can corresponding be arranged on the through hole (1b) of prefabricated end socket (1) and locate.

3, the pressure setting of closing end branch pipe according to claim 2 is characterized in that: described pressing mold (3) is irregular hemisphere structure, and described induction heater (6) is a medium frequency induction heater.