SU1337427A1 - Device for heat treatment of hollow articles - Google Patents

Abstract

The invention relates to the field of heat treatment of products and can be used, for example, when heating the welds of vessels in power and chemical engineering. The aim of the invention is to improve the quality of processing. The device includes a vertical rod 1, to which with the help of hinged links 2 and 3, the lower 4 and upper 5 sections of the heater are attached. Sections 4 and 5 of the heater are attached, respectively, to 6 and 8 to support 7 and to the pin bushing 9. Support 7 is located (L oo with 4 K /// 7 ///// W ///// // /////////// Fie.1

Description

c in the upper part of the bar between the O-rings 11 and 12. Sleeve 9 with trunnions

13, over which the device is lifted by a crane, is located on the rod above the support 7 between the shoulders 12 and

14. In the static state, the device is resting on a stand 17. RAV1

The invention relates to heat treatment of products and can be used, for example, when heating the welds of vessels of power and chemical engineering.

The aim of the invention is to improve the quality of processing.

Figure 1 shows the device, obsh; I view; figure 2 - the operating position of the device inside the product; on fig.Z - section aa in figure 2.

The device consists of a vertical rod 1, to the middle part of which at the same level sections 4 and 5 of the heating elements are attached by means of hinged links 2 and 3.

The number of sections in the row is chosen constructively, but not less than three. Sections 5 are fixed symmetrically between sections 4.

The ends of the links 2 distant from the rod are connected by flexible rods 6 to support 7, and links 3 are respectively connected by rods 8 to the pin bushing 9.

The support 7 is intended for fixing the device on the heat-treating product 10 and is located in the upper part of the rod between the shoulders 11 and 12

A sleeve 9 with axles 13, for which the device is raised by a crane, is located on the rod above the support 7 between the shoulders 12 and 14.

The hinged attachment to the rod and the presence of the plugs allow the links of m 2 to descend and the links of m 3 to rise relative to the working horizontal position, in which sections 4 and 5 are extended and form a closed ring heater.

With the elevated position of the links 3 and the lowered links x 2 sections 4 and 5 are compressed and the device can be lowered into the passage opening of the product 10,

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1337427

The numbering of the heating of the hollow article along the ring is carried out by supplying the device with additional sections 5 of the heater, attached to the rod 1 by hinge links 3 and to the trunnion sleeve 9 by means of flexible bars 8. 8. Il.

five

0

five

0

five

0

the diameter of which is less than the diameter of the heat-treatable zone 15. In order for sections 5, when opening the device, to enter gaps 16 between sections 4 without significant gaps, the sides of adjacent sections 4 and 5 are parallel to the corresponding link of section 5.

In the static state (Fig. 1), the device rests on a stand 17 provided in the lower part of the rod, the sleeve 9 rests on the flange 12, the link 3 with sections 5 occupy a horizontal position; bearing 7 is supported on shoulder 11, link 2 with sections 4 is lowered under its own weight.

The device works as follows.

With the cable of the crane behind the trunnion 13, the sleeve 9 rises until it stops at the flange 14, and the entire device rises above the passage opening 10 of the heat-treatable product. In this case, the plugs 8 lift sections 5 and the heater has the smallest diameter (the tie-rod in FIG. 2). The device is then lowered into the interior of the product. The support 7 reaches the edges of the through-hole of the product 10 and stops, and the rod 1 continues to lower, raising and pushing section 4. When the shoulder 12 reaches the support 7, the rod stops and sections 4 occupy the working position.

Upon further lowering, the sleeve 9 slides down along rod 1, and sections 5 are lowered and moved apart under their own weight. In this case, sections 5 are included in the intervals between sections 4.

The movement stops when the sleeve 9 resists into the flange 12, and sections 5 together with sections 4 form

one common closed annular heater located at a predetermined distance from the heat treatable zone 15 (Fig. 3).

The proposed device is used;

to

c during heat treatment of the product with one weld, but can be used for other seams located above or below. For this, the attachment points of the hinge links to the rod are changed and the length of the flexible tons of g. Such a changeover can be automated.

sections of heating elements hinged to the rod in the interval between the main sections with a trunnion bushing placed above the support on the rod with the possibility of displacement and connected to the additional sections through additional flexible rods, the rod is made with shoulders, one of which has a support, and on the other side there is a collar of the sleeve, while in the support there is an additional hole, through which it is passed, add on the bending rod, and the sides of the main sections of the elements are parallel to the adjacent side stor us additional sections.

Claims (1)

Claim 15 A device for heat treatment of hollow articles, containing a support with a central opening and a rod mounted therein with the possibility of movement with pivotally attached to it with intervals sections of heat I L f: -W T-CHl m Y: .-; I;, y) RI Zht body elements connected by flexible trays with a support, which, in order to improve the quality of heat treatment, five 0 sections of heating elements pivotally attached to the rod between the main sections, a trunnion bushing placed above the support on the rod with the possibility of movement and connected to additional sections through additional flexible rods, the rod is made with shoulders, one of which has a support , and on the other - a pin bushing, while in the support there is an additional opening through which additional bending is passed, and the sides of the main sections of the elements are parallel to the adjacent shackles parties additional sections. dd L-Wed ... / A I V, / - Fig 2 Editor N.Shvydka Compiled by Y. Usaty Tehred I.Popovich Fig Proof-reader I.Erdeyi 4099/24 Circulation 549Subscribe VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4