CN2250190Y - Double half pipe combined internal and external enamel long commissioning pipe - Google Patents

Abstract

The utility model provides a product of a double half pipe combined inner and outer enamel long material throwing pipe used in a reaction kettle. One end of a steel pipe is punched into a horn opening, and the steel pipe is cut into a pair of half pipes form a central line. An enamel flange disk with a horn funnel is additionally processed. After the two half pipes which are enameled are connected again into a straight pipe in a butt joint mode, the straight pipe is arranged in the horn funnel of the enamel flange disk, and an annular tetrafluoride pad is lined. Two enamel hoops are respectively sheathed on the middle part and the lower part of the combined type straight pipe of the two half pipes, and the double half pipe combined inner and outer enamel long material throwing pipe is formed. The utility model becomes a new technological product which substitutes a material throwing pipe coated with tetrafluoride on the lining.

Description

External enamel coating long commissioning pipe in two semicanal combined types

The utility model has related to interior external enamel coating long commissioning pipe spare and the small-bore big length steel pipe enamel processing technology that is used for the chemical reaction kettle acid-alkali-corrosive-resisting.Specifically, the utility model since with the steel pipe longitudinally cutting into two after, again internal and external walls is carried out the processing of enamel sintering, this just can make its enamel technology oversimplify, thereby solved bore≤50mm, the steel pipe inwall of length 〉=300mm can't carry out the difficult problem of enamel processing, and and then is to substitute liner outsourcing tetrafluoro commissioning pipe to become possibility.

At present domestic and international chemical industry generally adopts liner outsourcing tetrafluoro commissioning pipe in the pharmaceutical industry reactor, a small amount of producer adopts the titanium alloy commissioning pipe.Its greatest drawback is a complex manufacturing, and is fragile, the expense height.As firing again after the winding of the outer packet portion employing of tetrafluoro commissioning pipe tetrafluoro raw material, its finished product constantly is subjected to the influence of rising-heat contracting-cold in the production process of reactor, tetrafluoro is easily aging under HTHP in addition, the crack will appear after several days, cause acid (alkali) liquid to infiltrate inner steel pipe, the very fast corrosion fracture of tube wall and scrapping makes in the still feed liquid become the red rust look simultaneously and causes product quality to descend; About the inner liner portion of tetrafluoro commissioning pipe, also often come off and pile up the passage of back obstruction commissioning pipe and discard.Every about 1000 yuan of the costs of liner outsourcing tetrafluoro commissioning pipe, maximum about 30 days of service life, the shortest have only several days, average uses must stop production in 15 days changes a new commissioning pipe half a day, not only influence output, the output value, and increased equipment and materials expense and product cost, directly influence economic benefit of enterprises.It is reported that the domestic chemical industry that has, pharmacy producer use the titanium alloy commissioning pipe, about more than 10,000 yuan one of its cost is equivalent to the value of ten tetrafluoro commissioning pipes, super only 10 months of service life, take costliness but repair, want 600 yuan, also must pay expensive titanizing expense as 3 centimeters of argon arc weld seams.For example Zhangjiakou City resin processing plant produces 700 tons of haloflexes per year with three reactors, need 60 liner outsourcing tetrafluoro commissioning pipes approximately, about 80,000 yuan of annual total costs, the annual commissioning pipe of scrapping because of replacing reaches 60 times, just be equivalent to stop production 30 days, lack 60 tons of haloflexes of output approximately, thereby reduce more than 60 ten thousand yuan of the output values, also need 4 about about 40,000 yuan if use the titanium alloy commissioning pipe instead.This shows that above-mentioned two kinds of used commissioning pipes are all extremely undesirable, be badly in need of developing a kind of novel advanced practical reactor feed pipe, so that update.

According to reports, at present domestic and international expert generally believes that reactor uses the enamel commissioning pipe just can reduce expense significantly, improves production status greatly.But present glass-lined equipment manufacturing firm, also do not breaking through pipe range more than 300 millimeters, the inner tubal wall enamel sintering difficult problem of bore below 50 millimeters on the technology, because defectives such as the bubble that pipe takes place in the enamel sintering process in small-bore, trachoma, burst porcelain can't repair and get rid of, cause product can not acid and alkali-resistance, high pressure resistant impact, in reactor, can't use.Therefore national hundreds of families chemical industry, pharmacy producer have to prolong with after the land and expensive liner outsourcing tetrafluoro commissioning pipe or titanium alloy commissioning pipe, continue bearing equipment and materials expense height, stop still safeguard be on the point of numerous, labor strength is big, product cost is high, influence the adverse consequences of economic benefit.Fact proved: develop new enamel commissioning pipe with all strength, and improve its manufacture craft, just seem very urgent.

The purpose of this utility model is exactly the enamel pipe fitting product that adopts the process manufacturing various uses of " caesarean birth " semicanal enamel dexterously.Being about to steel pipe dissects into two, or in advance steel plate is struck out semicanal, its inwall is revealed, enamel technology is carried out the processing of enamel sintering routinely again, defectives such as the bubble that occurs in the process, trachoma, burst porcelain can in time easily be repaired eliminating, and make inside and outside tube wall enamel reach uniformity, can not enamel thereby overcome small-bore big length steel pipe, the reactor difficulty is given the situation that adopts the enamel commissioning pipe.

Task of the present utility model is with various bore steel pipes, the steel pipe of especially small-bore, big length, earlier the horn mouth funnel-form is processed in its top hot pressing, become two semicanals from the center line longitudinally cutting again, also can in advance steel plate be struck out the bell-mouthed semicanal of an end band, carry out inside and outside wall enamel sintering then, this abbreviation " caesarean birth " semicanal vitreous enamel coating.For the ease of by the dress and feed intake, must will be two semicanals having processed of enamel, again close up butt joint and combine, form and be with bell-mouthed pair of semicanal combination straight tube, the bonding agent of available corrosion-resistant and high-temperature resistant carries out the adhering and sealing processing with two abutment joints in case of necessity.Reprocess the enamel ring flange of the middle band of a garden dish horn mouth funnel in addition, two semicanal combination straight tube plug-in mountings are gone in the funnel of enamel ring flange, make the inwall of enamel ring flange funnel hold the horn mouth outer wall of two semicanal combination straight tubes upper end, and between its two wall, serve as a contrast a phenyl tetrafluoride pad; Be fixed in respectively on the middle part and lower end discharging opening outer wall of two semicanal combination straight tubes, with two enamel hoops again in case two semicanal cracks under impacting with high pressure.To assemble the enamel commissioning pipe plug-in mounting that finishes at last and go in the reactor top side mouth, and be connected use with original enamel diaphragm of fenestration, lap joint flange, phenyl tetrafluoride pad, corrosion-resistant rubber cushion etc.

Advance of the present utility model and practicality also show low, the long service life of expense.Be example with Zhangjiakou City resin processing plant still now, the tabulation contrast is as follows:

The commissioning pipe classification	Specification		Cost (unit)	Operating period (my god)	Three reactor annual consumptions			The stopping production maintain and replace
											Length (rice)	Internal diameter (mm)	Root	Expense (ten thousand yuan)	Save % than four fluorine tube	Number of times	The accumulative total sky	Loss stops production
	Liner outsourcing four commissioning pipes	1.7			50	1350	Average 15	60	8	0									60	30	640,000 yuan
The enamel commissioning pipe			1.7	50							1000	90	12	1.2	85	12	6	Belong to normal maintenance

Can conclude external enamel coating commissioning pipe in two semicanal combined types from contrast table, be the best new technology regeneration product that substitutes the habitual liner outsourcing tetrafluoro commissioning pipe of present reactor.The enamel commissioning pipe is saved equipment and materials, and to take potentiality also very big, such as the tetrafluoro commissioning pipe when renewing, what scrap is a homogeneous tube, and the enamel commissioning pipe is to be combined by five parts, exist that part and broken the superiority of changing that part, be replaced the part of getting off if be that porcelain facing deteriorates only, also can repair regeneration through enamel again, very low this of expense is that other commissioning pipe is out of the question.

Specific embodiment of the utility model is provided by the following drawings

Fig. 1 is the structural representation of external enamel coating long commissioning pipe in the two semicanal combined types of the utility model

Fig. 2 is the vertical view of Fig. 1

Fig. 3 is the upward view of Fig. 1 lower end

External enamel coating long commissioning pipe in the two semicanal combined types of the utility model is characterized in that being with bell-mouthed parts to form by two kinds.One is ring flange, and one is two semicanals.(two partly be with bell-mouthed semicanal to form) by 2.Their annexation is; Two semicanals (3,4) are packed in band horn mouth enamel ring flange (1,2).Pad is gone up Tetrafluoro spacer 6 between ring flange and the two semicanal, then straight tube outer wall middle part and the enamel pipe collar 7 of each suit of lower end that makes up at two semicanals.

As Fig. 1 .1 is the enamel ring flange, and 2 is enamel ring flange funnel, and 3 is two semicanal horn mouths, and 4 is the enamel semicanal, 5 is two semicanal combination straight tubes, and 6 is phenyl tetrafluoride pad, and 7 is the enamel pipe collar, and 8 is two semicanal combination abutment joints, 9 is two semicanal dog-houses, and 10 is discharging opening, and 11 is the still side opening.With a pair of enamel semicanal 4 butt joints, available in case of necessity fluid sealant is bonding with the abutment joint 8 of two semicanal combination straight tubes 5, two semicanals combination straight tubes 5 are packed in the enamel ring flange funnel 2 of enamel ring flange 1, and be lining in phenyl tetrafluoride pad 6 between the inwall of the outer wall of two semicanal horn mouths 3 and enamel ring flange funnel 2, again two enamel pipe collars 7 are set with on the outer wall of the middle part of two semicanals combination straight tubes 5 and lower end discharging opening 10; Two semicanal dog-houses 9 communicate with discharging opening 10, in the reactor side opening 11 of at last whole enamel commissioning pipe being packed into, use with original parts assembling again.

Claims (1)

1. External enamel coating long commissioning pipe in the two semicanal combined types of the utility model is characterized in that being with bell-mouthed parts to form by two kinds.One is ring flange, and one is two semicanals, twoly partly is with bell-mouthed semicanal to form by 2, and their annexation is; Two semicanals (3,4) are packed in band horn mouth enamel ring flange (1,2).Pad is gone up Tetrafluoro spacer 6 between ring flange and the two semicanal, then straight tube outer wall middle part and the enamel pipe collar 7 of each suit of lower end that makes up at two semicanals.

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