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Reactor seal hot pressing forming method, blank applying method and reactor seal formed by method

A hot-press forming, reactor technology, applied in chemical instruments and methods, forming tools, chemical/physical/physical-chemical processes, etc., can solve the problems of waste of resources, increased transportation weight of steel plates and head transportation, and increased weight. , to reduce the local stress concentration, eliminate the local thinning area, and improve the stress condition.

Inactive Publication Date: 2016-11-23
THE CHALLENGE PETROCHEM MACHINERY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this method has caused new problems. The thickness of the rough steel plate increases the material cost by 8% to 13%, and the weight increases, which increases the transportation weight of the steel plate and the transportation weight of the head.
The quality of thick steel plates is more difficult to guarantee, which affects the quality of subsequent heads
In addition, thick steel also increases the heating energy consumption, the welding workload of the head opening to take over the pipe, and the welding workload of the head and the cylinder, which indirectly causes waste of resources and environmental pollution.

Method used

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  • Reactor seal hot pressing forming method, blank applying method and reactor seal formed by method
  • Reactor seal hot pressing forming method, blank applying method and reactor seal formed by method
  • Reactor seal hot pressing forming method, blank applying method and reactor seal formed by method

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Effect test

Embodiment 1

[0049] A kind of heating furnace for hot pressing forming head of the present embodiment, such as Figure 4As shown, it includes a furnace roof 21 and a furnace wall 22 surrounding a closed furnace, a hearth 23 and a support pad 25 arranged in the furnace hearth. The stamping easy-to-thinning area of ​​the blank 24 (the local position that does not want to be stamped and thinned when the steel blank is stamped) is provided with a coating mechanism for a high-temperature-resistant and heat-insulating shielding layer. The high-temperature-resistant and heat-insulating shielding layer includes an upper shielding layer 26 and a lower shielding layer. Masking layer 27. It also includes temperature measurement and control thermocouples 29 and 30 for measuring and controlling the temperature of the shielded area and the non-shielded area of ​​the steel blank 24 respectively. Rollers 28 are arranged below the stove base 23. During operation, the furnace base 23 is first pulled out fr...

Embodiment 2

[0056] The second specific implementation of the thermoforming head of this embodiment, the main technical solution of this embodiment is the same as that of Embodiment 1, and the features not explained in this embodiment adopt the explanation in Embodiment 1, and are not omitted here Let me repeat. The difference between this embodiment and embodiment 1 is that, see figure 2 , image 3 and Figure 9 As shown, thermoformed heads include elliptical heads and spherical heads. Among them, the elliptical head includes a straight section 9 forming the head port 8, a spherical bottom section 11 (radius R) forming the top of the head, and a transition section 10 (small radius r) connecting the straight section 9 and the bottom section, The thickness of the straight section 9, the transition section 10 and the top section 11 are equal. The spherical head has a spherical radius R everywhere. Stamping and forming heads by traditional technology generally lead to thinning of wall t...

Embodiment 3

[0058] The third specific implementation of the thermoforming head of this embodiment, the main technical solution of this embodiment is the same as that of Embodiment 2, and the features that are not explained in this embodiment are explained in Embodiment 2, and are not mentioned here Let me repeat. The difference between this embodiment and embodiment 2 is that, see Figure 5 As shown, the head includes a basic thickness area and a local thickening area. Under the same internal pressure, the wall thickness of each part of the entire head corresponds to its stress level. The thickening can be the thickening of the steel blank before the head forming in the corresponding local area (such as Figure 5 The thickening area 31 on the upper surface of the blank and the thickening area 32 on the lower surface of the blank) can also be the thickening caused by controlling a small amount of thinning in a certain local area and a large amount of thinning in other areas during the hea...

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Abstract

A method of hot-press forming reactor head of the present invention, the blank applied to the method, and the reactor head formed by the method, laying or coating a high-temperature-resistant heat-insulating shielding layer on the blank's stamping easy-to-thin area before heating . Compared with the traditional technology, (1) The wall thickness of each part of the finished head is uniform or the required wall thickness difference is produced. Under the same internal pressure, the wall thickness of each part of the entire head corresponds to its stress level. The stress ratio and safety strength of each part of the head are basically the same, which can reduce the strength difference with the cylinder and reduce the local stress concentration; (2) The local thinning area of ​​the transition section of the head caused by the traditional molding process is eliminated, and the blank does not It is necessary to significantly increase the overall thickness on the basis of the basic thickness, which reduces the production costs of head materials, molding, and transportation, and also improves the quality of the blank, improves the stress of the head, and prolongs the service life of the head.

Description

technical field [0001] The present invention relates to the technical field of various large-scale high-grade reactors used in petroleum refining and chemical industry, coal chemical industry, chemical fertilizer industry, and other various chemical equipment, and in particular relates to a method of heat-pressing reactor heads, which is applied to The blank of the method and the reactor head formed by the method. Background technique [0002] The basic structure of a chemical reactor is as follows: figure 1 As shown, it includes a cylindrical body 1, a lower opening 5 arranged on the cylindrical body 1, an inner support structure 7 arranged on the inner wall of the cylindrical body 1, an upper sealing head 2 and a lower sealing head arranged at both ends of the cylindrical body 1 3, and the various upper openings 4 provided on the head, and the lower support structure 6 provided on the cylindrical body 1 or the outer wall of the head. The cylindrical body 1 is made of stee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/26B23P15/00B21D37/16B01J19/00
CPCB21D22/26B01J19/0053B21D37/16B23P15/00
Inventor 陈孙艺
Owner THE CHALLENGE PETROCHEM MACHINERY CORP
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