Metal Pressure Vessel Requirements

Stainless steel and nonferrous metal pressure vessel requirements
1. Pressure vessels and pressure components of non-ferrous metal manufacturing,shall meet the requirements of this order, we must also meet the special technical requirements or the requirements of the design drawings;
2. Stainless steel and nonferrous metal pressure vessel must have a special requestor a dedicated manufacturing plant site, not with the black metal mixed with other products or production. To keep the workplace clean, dry, and strictly control dust.Forming and welding, should meet the needs of special tooling and equipment;
3. Stainless steel and nonferrous metal pressure vessel requirements must controlsurface mechanical damage and splashes;
4. Stainless steel and nonferrous metal pressure vessel requirements generallyshould be gas shielded arc welding.

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Keywords: reactor, heat exchanger, pressure vessel

The development of heat exchangers

The development of heat exchangers
With the development of production technology, the scope of application of variousheat exchangers are constantly developing the application of various heat exchangers are constantly developing. Such as heat exchangers for high temperature and pressure of the scope of application are constantly developing the heat transfer process, it was mainly used simple structure of the flexible pipe or tube heat exchanger.

However, due to the heat exchanger fluid handling capacity is small, prices high, can not meet the needs of modern large-scale installations, so as the structural materialand manufacturing process development, shell and tube heat exchanger is togradually extend to the application of high temperature and pressure of the occasion,this heat exchanger in foreign countries, the maximum working pressure of 84MPa,temperature of 1000 ℃.

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Keywords: reactor, heat exchanger, pressure vessel

Stainless steel reactor main components

Stainless steel reactor main components of the device
Stainless steel reactor supporting a number of functional magnetic stirrerreactor, Weihai Chemical Machinery Co., Ltd. Universal stainless steel tube reactorto make up a number of irrational rotation around the light source and multi-tubemechanical rotation of the drawbacks of poor performance can be achieved at the same time, some inflatable tube function, multi-tube magnetic stirrer reactorperformance real practical value!

As the user due to the production process, operating conditions vary, the stainless steel reactor lid opening process, mixing pattern (with paddle, anchor type, frametype, spiral type, etc.), bearing type (type bearings suspended or supported ) andpacking devices, different requirements, contact the factory with a separate design.

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Keywords: reactor, heat exchanger, pressure vessel

Steel pressure vessel weld heat treatment

Steel pressure vessel weld heat treatment
(1) pressure vessel steel weld heat treatment after the heat treatment should be usedas a whole. Like to take sub-heat treatment, heat treatment of their overlapping length should be not less than 1500mm. Outer part of the furnace insulation measuresshould be taken.

(2) steel pressure vessel weld heat treatment girth welds and repaired welds,allowing the use of local heat treatment. Local heat treatment of the weld, to includethe entire weld. Heat weld width on each side of not less than twice the thickness ofthe shell name; near the heated parts of the shell insulation measures should be taken.

(3) pressure vessel steel weld heat treatment should be ended and all the welding work experience received after passing the pressure test before.

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Keywords: reactor, heat exchanger, pressure vessel

Heat exchanger splicing

Heat exchanger splicing, should meet the following requirements:
a, butt joint welding process should be assessed. Number of specimen number, size, test methods according to the provisions of JB 4708; aluminum, copper, titanium welded joints or the reference implementation;
b, with a heat exchanger tube butt weld, not more than one straight; U-shaped tube not more than two; the shortest tube length not less than 300mm; including at least 50mm of straight pipe U-bend pipe welding splicing within the prohibited joints;
c, groove pipe end should be processed by mechanical methods, should be cleaned before welding;
d, corresponding amount of the wrong side of the wall thickness should not exceed 15% of tubes, and not greater than 0.5mm; straightness deviation will not affect the smooth tube wear limit;
e, the table should be selected after docking the diameter of the welding head to pass the ball checks to the ball by qualified;

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Keywords: reactor, heat exchanger, pressure vessel

Pressure Vessel Weld Undercut

The surface pressure vessel weld undercut weld surface quality:
(1) pressure vessel weld surface quality of the weld surface undercut the standardtensile strength greater than 540MPa steel and Cr-Mo low alloy steel pressure vessel, made ​​of austenitic stainless steel pressure vessels, cryogenic pressure vessels , spherical pressure vessels and weld factor of 1.0, pressure vessel, the weldsurface may not have undercut;
(2) above (1) outside the pressure vessel weld surface of the undercut depth of notmore than 0.5mm, undercut shall not exceed a continuous length of 100mm, total length of weld undercut on both sides of the weld length shall not exceed 10%;
(3) non-ferrous metal pressure vessel weld undercut surface shall meet thestandards.

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Keywords: reactor, heat exchanger, pressure vessel

Pressure vessel for inspection holes

Pressure vessel for inspection holes (except heat) requirements
1. Pressure vessel shall have the inspection hole. Check the hole, includingmanholes, hand holes, threaded pipe plug inspection hole.
2. Than or equal to 1000mm diameter pressure vessel, shall be open at least onehole; pressure vessel inner diameter greater than or equal less than 500mm ~1000mm, should be open a hole or two hand holes; pressure vessel diameter lessthan or equal to 300mm ~ 500mm, should be set up at least two hand holes.
3. Circular manhole diameter shall be not less than 400mm, oval-shaped peopleshould not be less than the pore size 400 × 300mm; round hand hole diameter should be not less than 100mm, oval hand hole size should be not less than 75 × 50mm.
4. The pressure vessel has a removable head (cover and the like), or other cover toswitch, where people can play the role of hole or hand hole, can no longer set themanhole or hand hole. But its size, should not be less than the replaced provisionsmanhole or hand hole size.
5. Such as pressure vessels set on threaded pipe plug inspection hole (Note 3), you can not set the hand hole. Threaded pipe plug shall not be less than the nominaldiameter of 50mm.
6. Check the location of the hole opening should be reasonable, appropriate, easy to clean interior. Hand hole or threaded pipe plug inspection hole should be closedwere opened at both ends of the head or near the cylinder head on.
7. Spherical pressure vessel of the manhole should be located in the very belt.

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Keywords: reactor, heat exchanger, pressure vessel