CN106524821A - Hydrogenation air cooling pipe bundle system for preventing ammonium salt flowing corrosion large leakage pipe blasting risk - Google Patents
Hydrogenation air cooling pipe bundle system for preventing ammonium salt flowing corrosion large leakage pipe blasting risk Download PDFInfo
- Publication number
- CN106524821A CN106524821A CN201611228997.1A CN201611228997A CN106524821A CN 106524821 A CN106524821 A CN 106524821A CN 201611228997 A CN201611228997 A CN 201611228997A CN 106524821 A CN106524821 A CN 106524821A
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- China
- Prior art keywords
- pipe
- bobbin carriage
- hole
- tube bank
- notch cuttype
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 title claims abstract description 28
- 238000001816 cooling Methods 0.000 title claims abstract description 25
- 150000003863 ammonium salts Chemical class 0.000 title claims abstract description 21
- 238000005422 blasting Methods 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000003466 welding Methods 0.000 claims description 8
- 241000274582 Pycnanthus angolensis Species 0.000 claims description 7
- 239000011087 paperboard Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001953 sensory effect Effects 0.000 claims description 2
- 208000031481 Pathologic Constriction Diseases 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 210000001215 vagina Anatomy 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910001293 incoloy Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
Abstract
The invention discloses a hydrogenation air cooling pipe bundle system for preventing ammonium salt flowing corrosion large leakage pipe blasting risk. An inlet pipe box and an outlet pipe box are arranged in parallel; upper and lower two rows of pipe bundles provided with center through holes are horizontally arranged in the inlet pipe box in parallel; two ends of each pipe bundle penetrate through the inlet pipe box, and the pipe bundles are in interference fit with through holes of box plates on two sides of the inlet pipe box; horizontal radial through holes are formed in the side walls of the pipe bundles in the inlet pipe box; the pipe bundles are tightly connected with the inlet pipe box through sealing pressing modules; the pipe bundles are connected with thick wall pipes; the thick wall pipes are connected with through holes of the box plates of the outlet pipe box by pressure sensing modules; and plug modules are mounted in the through holes of the box plates of the outlet pipe box. The system can realize quick positioning of pipe bundle bit positions with ammonium salt flowing corrosion micro leakage in non-inspection period, realizes leakage blockage under the precondition of not stopping working to effectively prevent conversion of the ammonium salt flowing corrosion from micro leakage to large leakage or even pipe blasting, and prominently reduces non-planned stop risk.
Description
Technical field
The present invention relates to the security incident such as the leakage of petroleum chemical industry oil refining apparatus Flow Corrosion induction, booster is anti-
Control, concretely relates to a kind of hydrogenation air cooling tube bundle system for preventing ammonium-salt flow from corroding gross leak booster risk.
Background technology
Large-scale High-Pressure hydrogenation air-cooler is widely used in petrochemical industry, generally with complex process, operating mode be changeable, long period
Even overload operation the characteristics of, the medium of conveying is inflammable and explosive, poisonous and harmful, its reliability direct relation public safety.Greatly
Amount failure case is dissected and is found, in multicomponent fluid course of conveying, by the coupling of flowing-heat transfer, is deposited with ammonium salt crystallization
The Flow Corrosion that underdeposit corrosion and multi-phase flow erosion cause is to cause hydrogenation air cooling tube bank frequently leakage, the main inducing of booster,
And the failure of hydrogenation air cooling tube bank has obvious locality and bursty nature, the risk prevention system of Flow Corrosion, prediction and warning
Difficulty is high, always one of academia and an engineering circles focus of attention difficult problem.
In recent years, the Problem of Failure of China's hydrogenation air cooling tube bank generally occurs, and causes the pernicious thing such as a lot of fire, blast
Therefore.By taking petrochemical industry as an example, with the increase of the crude oil with poor quality processing capacity such as high-sulfur, high nitrogen, peracid, chloride, hydrogenation air cooling tube bank
Leakage perforated phenomenon occur repeatedly.Used as the Typical Representative that multicomponent fluid is transported, the Flow Corrosion of hydrogenation air-cooler fails
Equally there is universality in the world.NACE, UOP, API are formulated based on the statistical analysiss of failure case through a large amount of investigations
The design of air-cooler system, manufacture, operation and inspection specification API 932-A/B, propose to limit velocity of medium, NH4HS concentration and
The measure of the control corrosion rates such as Kp values.Regrettably, although China's high-pressure hydrogenation air cooler is designed with reference to above-mentioned specification, but still
Tube bank leakage is occurred in that so.After upgrade of material is Incoloy 825 or dual phase steel by partial devices, improve to a certain extent resistance to
Erosion property, but fundamentally do not solve crystallization, the deposition problems of ammonium salt.For example：In May, 2013, by processing Shengli Oil Field
High chlorine crude oil affects, and the diesel oil of ten many enterprises such as Yangtze petrochemical industry, Anqing Petrochemical Company, gasoline hydrogenation system occur in succession because of crystal
Deposition, the hydrogenation air cooling tube bank leakage problem that causes of the local erosion after underdeposit corrosion and plugging, cause unplanned shutdown
Accident more than 40 rises, and has a strong impact on equipment safety and Business Economic Benefit.
The polybasic medium of hydrogenation air cooling tube bank conveying is complicated, belongs to hydro carbons, gas (NH3、HCl、H2S、H2Deng), crystalline phase
(NH4Cl、NH4HS the polybasic medium for) constituting.Many processes such as the failure of Flow Corrosion process is related to react, flows, conducts heat, phase transformation
Synergism, the extremely difficult quantitative forecast in position of Flow Corrosion leakage, it is generally the case that once there is Flow Corrosion leakage accident,
No matter leakage rate is big or little, is both needed to carry out the emergency shutdown of device, has a strong impact on the economic benefit and production scheduling of enterprise.Cause
This, invents a kind of hydrogenation air cooling tube bundle system for effectively preventing ammonium-salt flow corrosion gross leak booster risk and is particularly important.
The content of the invention
To overcome existing ammonium-salt flow corrosion frequently to cause the unplanned parking problem of Cooler in Hydro-processing, the present invention to provide
A kind of hydrogenation air cooling tube bundle system for preventing ammonium-salt flow from corroding gross leak booster risk, the invention fast and effectively can determine
Flow Corrosion leakage tube bank position number, and the hydrogenation that ammonium-salt flow corrodes Small leak initiation is significantly reduced by online leakage stopping technology
The frequent parking problem of air cooler, reduces the unplanned parking level of hydrogenation plant, lifts hydrogenation air cooling and restrains in crude oil in poor quality
During long period safe operation adaptability.
In order to achieve the above object, the technical solution used in the present invention is：
The present invention includes that entrance bobbin carriage, outlet bobbin carriage, tube bank, thick-walled pipe, flexible pipeline section, pressure transducer and screw thread are compressed
Part；Entrance bobbin carriage and outlet bobbin carriage are arranged in parallel and are rectangle along cross section, and it is flat that entrance bobbin carriage is disposed with two rows level
Capable tube bank, restrains two ends through entrance bobbin carriage and restrains the interference and the through hole of entrance bobbin carriage both sides boxboard and match somebody with somebody per root
Close, the tube bank side wall in entrance bobbin carriage is provided with the horizontal radial through hole being flowed into for medium in tube bank, away from outlet
Tube bank one end of case is held down assembly by sealing and be tightly connected with entrance bobbin carriage；Near tube bank one end of outlet bobbin carriage and thick-walled pipe
One end connects, and the through hole connection of thick-walled pipe other end Jing pressure sensor modules and outlet bobbin carriage side boxboard, outlet bobbin carriage are another
The plug component of retaining pressure sensory package middle sleeve when the through hole of side box plate is provided with for leaking；It is provided with center to lead in tube bank
Hole, is provided with the female thread for coordinating with flexible pipeline section external screw thread in the central through hole for restraining end.
The sealing holds down assembly including indent notch cuttype fixed stop, evagination notch cuttype compact heap and flexible pipeline section；Stretch
Tube bundle wrapper outside the bobbin carriage of gateway is equipped with indent notch cuttype fixed stop and evagination notch cuttype compact heap, and indent notch cuttype fixes gear
Block end face is connected and fixed with entrance bobbin carriage side box plate by welding, evagination notch cuttype compact heap pass through attachment bolt and nut and
Indent notch cuttype fixed stop other end is fixedly connected, the indent notch cuttype fixed stop through hole hole wall being connected with tube bank outer wall
Two seals groove is opened up, two seals groove is respectively embedded into the first O-ring seal and the second O-ring seal；Indent notch cuttype is fixed
Connecting end surface between block and evagination notch cuttype compact heap is ladder type end side, and ladder type end side installs the from inside to outside successively
One sealing ring, the second sealing ring and the 3rd sealing ring, cause indent notch cuttype fixed stop with outer convex rank by three sealing rings
Multistage pressure sealing structure is constituted between ladder type compact heap；
Stretch out the tube bank end face outside entrance bobbin carriage and be milled with shoulder hole, the big end of shoulder hole is provided with female thread, and shoulder hole small end is
For the central through hole of tube bank；Flexible pipeline section is inserted in tube bank shoulder hole, and flexible pipeline section is inserted in one end of tube bank and is milled with central blind hole,
Flexible pipeline section other end car has the ladder shaft shoulder, the pipeline section at flexible pipeline section multidiameter shoulder be outwards set with successively elastic seal ring,
Slide block baffle plate and shaft end block, and the first tightening nut and the first pad are housed in flexible pipeline section end, spiral shell is screwed by first
The big end threaded connection of female and the first pad axial compression shaft end block, shaft end block and tube bank shoulder hole.
There is gap between described slide block baffle plate and the big end inwall of tube bank shoulder hole, the second pad is connected to slide block baffle plate
And restrain between the big end inwall of shoulder hole and be supported on shaft end block end face.
The 3rd O-ring seal is embedded between described slide block baffle plate and the joining end face of shaft end block.
Described pressure sensor module includes sleeve pipe, pressure transducer, screw thread compressing member and the second tightening nut, and pipe
The internal diameter and external diameter of described thick-walled pipe one end of beam connection is identical with tube bank internal diameter and external diameter respectively, leads between tube bank and thick-walled pipe
Cross and be welded and fixed, the external diameter of the thick-walled pipe other end becomes big, the thick-walled pipe other end stretch into outlet bobbin carriage and with outlet bobbin carriage side box plate
Welding, the thick-walled pipe one end near outlet bobbin carriage side box plate are milled with indent notch cuttype centre bore, and thick-walled pipe is inserted in sleeve pipe one end
In indent notch cuttype centre bore, sleeve pipe is inserted in outside the end of indent notch cuttype centre bore and is milled with male type hierarchic structure, male type
The stepped sealed structure of composition is engaged between hierarchic structure and indent notch cuttype centre bore, and is arranged between stair-step successively
Primary seal circle and secondary seal circle；Between the ring at sleeve pipe male type hierarchic structure maximum end between sleeve pipe and heavy wall inside pipe wall
Gap has been embedded in pressure transducer, and screw thread compressing member and the second tightening nut are cased with the sleeve pipe other end outside pressure transducer,
Screw thread compressing member forms screw thread with the maximum end of thick-walled pipe indent notch cuttype centre bore and coordinates, and passes pressure by screw thread compressing member
Sensor be pressed on sleeve pipe male type hierarchic structure maximum end and the sleeve pipe other end between step at, screw thread compressing member axially through
Second tightening nut is fixed.
Described plug component includes outer pipe plug and inner screw plug, opens with the outlet bobbin carriage opposite side boxboard of thick-walled pipe connecting side
The through hole coaxial with thick-walled pipe is provided with, through hole is connected and fixed with boxboard by welding built with outer pipe plug, outer pipe plug, and outer pipe plug is opened
There is tapped through hole, inner screw plug forms thread connection cooperation by being threaded in the tapped through hole of outer pipe plug, positioned at outlet bobbin carriage
Interior inner screw plug side wall circumferentially offers annular groove, and annular groove is embedded in outer pipe plug sealing ring, and outer pipe plug sealing ring is caused
Outer pipe plug is mutually tightly connected with inner screw plug.
The centre bore for stretching into the described flexible pipeline section one end end face in entrance bobbin carriage is taper hole.
It is taper hole to stretch into the sleeve pipe one end centre bore in thick-walled pipe indent notch cuttype centre bore.
The invention has the advantages that：
The novel hydrogenation air cooling tube bundle system structure of the present invention, can realize that non-verification cycle betaine Flow Corrosion is micro- and let out
The tube bank position number of leakage quickly positions, and the leak stopping under the premise of realizing not stopping work.
The present invention can effectively prevent ammonium-salt flow corrosion from being converted from tiny leakage to the accident of gross leak, even booster, show
Work reduces the unplanned shutdown risk of hydrogenation plant during crude oil in poor quality, larger-scale unit, operating mode harshnessization, reduces production
Maintenance cost, enterprise economic benefit.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1.
Fig. 3 is the enlarged drawing in B regions in Fig. 1.
In figure：1st, stretch pipeline section, the 2, first tightening nut, the 3, first pad, and 4, shaft end block, 5, tube bank, the 6, the 3rd O shapes
Sealing ring, the 7, second pad, 8, slide block block, 9, elastic seal ring, the 10, the 3rd sealing ring, the 11, second sealing ring, 12, first
Sealing ring, the 13, second O-ring seal, the 14, first O-ring seal, 15, horizontal radial through hole, 16, entrance bobbin carriage, 17, heavy wall
Pipe, 18, sleeve pipe, 19, primary seal circle, 20, secondary seal circle, 21, pressure transducer, 22, screw thread compressing member, the 23, second rotation
Tight nut, 24, outlet bobbin carriage, 25, outer pipe plug sealing ring, 26, outer pipe plug, 27, inner screw plug, 28, female thread, 29, nut, 30,
Attachment bolt, 31, indent notch cuttype fixed stop, 32, evagination notch cuttype compact heap, 33, inlet flange, 34, outlet(discharge) flange.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention includes entrance bobbin carriage 16, outlet bobbin carriage 24, tube bank 5, thick-walled pipe 17, flexible pipeline section 1, pressure
Force transducer 21 and screw thread compressing member 22；Entrance bobbin carriage 16 and outlet bobbin carriage 24 are arranged in parallel and are rectangle shape along cross section
Shape, entrance bobbin carriage 16 are connected by the parallel tube bank 5 of upper and lower two row of horizontal with outlet bobbin carriage 24；Wherein, entrance bobbin carriage 16 is arranged
The tube bank 5 for having upper and lower two row of horizontal parallel, restrains 5 two ends and passes through the two ends of entrance bobbin carriage 16, i.e. tube bank 5 to pass respectively per root
Two sides of rectangular pipe box, and interference fit between 5 and the through hole of 16 liang of side box plates of entrance bobbin carriage is restrained, positioned at inlet tube
5 side wall of tube bank inside case 16 is provided with and is flowed into the horizontal radial through hole 15 in tube bank 5 for the multiphase flow medium in bobbin carriage；Far
5 one end of tube bank for separating out mouthful bobbin carriage 24 be connected with 16 side boxboard of entrance bobbin carriage by sealing to be held down assembly；Near outlet
5 one end of tube bank of bobbin carriage 24 is connected with 17 one end of thick-walled pipe, 17 other end Jing pressure sensor modules of thick-walled pipe and outlet bobbin carriage 24
The through hole interference connection of one side box plate, is provided with the through hole for exporting 24 another side box plate of bobbin carriage when leaking for corrosive medium and blocks up
The plug component of plug pressure sensor module middle sleeve 18；Central through hole, as hollow pipe, such as one of which are provided with tube bank 5
Specification is 25 × 3mm of φ, and the through hole interior sidewall surface for restraining 5 ends is provided with female thread, wherein the female thread of one end for stretch
The external screw thread of draw section 1 is connected, and the female thread of the other end is then connected with the external screw thread of screw thread compressing member 22.Wherein,
Reversed cone angle, as taper hole in the centre bore of the 1 one end end face of described flexible pipeline section stretched in entrance bobbin carriage 16 is arranged.
As shown in figure 1,16 top of entrance bobbin carriage and 24 bottom of outlet bobbin carriage have what is flowed into for multiphase flow medium
Entrance and the outlet flowed out for multiphase flow, the entrance on 16 top of multiphase flow medium Jing entrances bobbin carriage enter entrance bobbin carriage 16, connect
Jing horizontal radials through hole 15 and enter tube bank 5, the tube bank 5 being arranged in parallel through upper and lower two row flows through sleeve pipe 18, enters back into outlet
Bobbin carriage 24, finally flows out from the outlet positioned at 24 bottom of outlet bobbin carriage, completes a technical process.It is in non-leak condition, many
Jing after inlet flange 33 enters into entrance bobbin carriage, Jing horizontal radials through hole 15 is flowed in tube bank 5 phase flow medium.
As shown in Fig. 2 sealing holds down assembly including indent notch cuttype fixed stop 31, evagination notch cuttype compact heap 32 and stretches
Draw section 1；The tube bank 5 for stretching out 16 outer side box plate of entrance bobbin carriage is set with indent notch cuttype fixed stop 31 and evagination notch cuttype pressure
Tight block 32, near entrance bobbin carriage 16,31 end face of indent notch cuttype fixed stop is by welding for indent notch cuttype fixed stop 31
It is connected and fixed with 16 side box plate of entrance bobbin carriage；Evagination notch cuttype compact heap 32 is circumferential to offer bolt hole and by attachment bolt 30
It is fixedly connected with nut 29 with 31 other end of indent notch cuttype fixed stop；Wherein, the indent ladder being connected with 5 outer walls of tube bank
31 through hole hole wall of type fixed stop opens up two seals groove, and the first O-ring seal 14 and the 2nd O are respectively embedded in two seals groove
Type sealing ring 13, constitutes sealing.
As shown in Fig. 2 the connecting end surface between indent notch cuttype fixed stop 31 and evagination notch cuttype compact heap 32 is rank
Ladder type end face, ladder type end side are sequentially installed with the first sealing ring 12, the second sealing ring 11 and the 3rd sealing ring 10 from inside to outside,
That is the first sealing ring 12, the second sealing ring 11 and the 3rd sealing ring 10 are installed on indent notch cuttype fixed stop from inside to outside successively
31 and 32 ladder type end side of evagination notch cuttype compact heap step between in the gap that formed, cause indent rank by three sealing rings
Multistage pressure sealing structure is constituted between ladder type fixed stop 31 and evagination notch cuttype compact heap 32；Wherein, stretch out entrance bobbin carriage
5 end face of tube bank outside 16 is milled with shoulder hole, and the big end of shoulder hole is provided with female thread, and shoulder hole small end as restrains 5 central through hole；
1 rotation set of flexible pipeline section enters in 5 shoulder holes of tube bank, and flexible pipeline section 1 is provided with external screw thread, and flexible pipeline section 1 is by screwing into pipe
In beam 5, one end that flexible pipeline section 1 is inserted in tube bank 5 is milled with central blind hole, and the other end car of flexible pipeline section 1 has the ladder shaft shoulder, stretches
Pipeline section at the 1 ladder shaft shoulder of pipeline section is set with elastic seal ring 9, slide block block 8 and shaft end block 4 from inside to outside successively.Stretching
The end of draw section 1 is provided with the first tightening nut 2 and the first pad 3, by 3 axial direction of the first tightening nut 2 and the first pad
Compression axis terminal block block 4,4 one end of shaft end block are provided with external screw thread, and the big end of 5 shoulder holes of shaft end block 4 and tube bank passes through screw thread
Connection.The cross-section structure of slide block baffle plate 8 is L-shaped structure, has ring between slide block baffle plate 8 and the big end inwall of 5 shoulder holes of tube bank
To gap, the second pad 7 is embedded with the radial clearance, the second pad 7 is connected to slide block baffle plate 8 and the big end of 5 shoulder holes of tube bank
Between inwall and it is supported on 4 end face of shaft end block.It is embedded with circumferentially between 4 joining end face of slide block baffle plate 8 and shaft end block
The 3rd O-ring seal 6.
As shown in figure 3, pressure sensor module includes that sleeve pipe 18, pressure transducer 21, screw thread compressing member 22 and second are screwed
Nut 23.In the internal diameter and external diameter phase respectively with tube bank 5 of the internal diameter and external diameter with 17 one end of the thick-walled pipe of 5 connection of tube bank
Together, it is connected by butt welding between tube bank 5 and thick-walled pipe 17；The external diameter of 17 other end of thick-walled pipe becomes big, the end thick-walled pipe 17
Stretch into outlet bobbin carriage 24 and be welded and fixed with the side box plate of outlet bobbin carriage 24；Indent notch cuttype center is milled with inside thick-walled pipe 17
Hole, 18 one end of sleeve pipe are inserted in the trapezoidal centre bore of indent of thick-walled pipe 17, and sleeve pipe 18 is inserted in the end of indent notch cuttype centre bore
Evagination forge piece of step type structure is milled with outward, the stepped sealed knot of composition between evagination forge piece of step type structure and indent notch cuttype centre bore, is engaged
Structure, and setting primary seal circle 19 and secondary seal circle 20 between stair-step successively.18 evagination forge piece of step type structure of sleeve pipe is most
Pressure transducer 21 is slipped in radial clearance at big end between 17 inwall of sleeve pipe 18 and thick-walled pipe, outside pressure transducer 21
Screw thread compressing member 22 and the second tightening nut 23 are cased with 18 other end of sleeve pipe, screw thread compressing member 22 is provided with external screw thread, heavy wall
The big end of 17 indent notch cuttype centre bore of pipe is provided with female thread, screw thread compressing member 22 and 17 indent notch cuttype centre bore of thick-walled pipe
Maximum end form screw thread and coordinate；Pressure transducer 21 is pressed on by 18 evagination forge piece of step type structure of sleeve pipe by screw thread compressing member 22
At the step of 18 other end of maximum end and sleeve pipe, screw thread compressing member 22 is fixed axially through the second tightening nut 23；Wherein, stretching
The 18 one end centre bore of sleeve pipe entered in 17 indent notch cuttype centre bore of thick-walled pipe arranges interior reversed cone angle, that is, arrange evagination notch cuttype knot
18 one end centre bore of sleeve pipe of structure be taper hole, its object is to ensure tube bank 5 in fluid from entrance bobbin carriage flow to sleeve pipe 18 when,
Avoid producing larger flow field mutation.
As shown in figure 1, plug component includes outer pipe plug 26 and inner screw plug 27, the outlet bobbin carriage 24 with 17 connecting side of thick-walled pipe
Another side box plate offers the through hole coaxial with thick-walled pipe 17, is provided with outer pipe plug 26 in through hole, outer pipe plug 26 by welding with
Boxboard is connected and fixed；Outer pipe plug 26 offers tapped through hole, and inner screw plug 27 is by being threaded in the tapped through hole of outer pipe plug 26
Form thread connection to coordinate, inner screw plug 27 is stretched in outlet bobbin carriage 24, the inner screw plug 27 in outlet bobbin carriage 24 is circumferential to be opened up
There is annular groove, annular groove is embedded in and is provided with outer pipe plug sealing ring 25, and 25 one side of outer pipe plug sealing ring is close to outer pipe plug
26 internal end surfaces, it is to avoid leakage occur in the multiphase flow medium Jing female threads 28 in outlet bobbin carriage 24.Therefore, outer pipe plug sealing ring 25
So that outer pipe plug 26 is mutually tightly connected with inner screw plug 27.
As shown in figure 3, for restraining per root, it is in the radial clearance between thick-walled pipe 17 and sleeve pipe 18, circumferentially spaced
Four pressure transducers 21 are uniformly arranged, respectively positioned at four, the upper and lower, left and right of sleeve pipe position, each pressure transducer is installed
Radial direction radius distance all same.
The present invention specific implementation process be：
1) entrance bobbin carriage 16 and outlet bobbin carriage 24 are connected using the tube bank that two rows are arranged in parallel, according to foregoing connection
Mode constitutes hydrogenation air cooling tube bundle system.Will be upper and lower two rows specification identical Pipe bundle structure parallel in hydrogenation air cooling tube bundle system
Between entrance bobbin carriage 16 and outlet bobbin carriage 24, upper row includes parallel uniform m root Pipe bundle structures in the horizontal direction, lower row
Including parallel uniform n root Pipe bundle structures, m-n=1, upper row and lower row in the horizontal direction each Pipe bundle structure along level arrangement
Direction interlaced arrangement, i.e., the central axis for arranging adjacent three tube banks up and down constitute equilateral triangle.
2), when reaction effluent air cooler works, multiphase flow medium Jing inlet flanges 33 enter entrance bobbin carriage 16, via entering
Tube bank horizontal radial through hole 15 inside mouthful bobbin carriage is flowed in tube bank 5, and oil in tube bank 5, Jing is thick again for gas and water multiphase flow medium
Wall pipe 17 and sleeve pipe 18 are flowed into outlet bobbin carriage, finally flow out from outlet(discharge) flange 34；
3) starting stage, in reaction effluent air cooler No leakage state, i.e., accidental conditions when, inside air cooler
Pressure be P0, P0Act on the compression area S of sleeve pipe one end bellmouth, wherein vertically compaction pressure sensor 21 point
Power is Fx=P0S cos α, wherein α are bellmouth chamfer angle；To each pressure transducer PXwiPressure calibration is carried out, will be every
One pressure transducer PXwiInitial pressure be labeled as pressure transducer P during reaction effluent air cooler non-leak conditionXwiPressure
Power calibration value
Wherein PXwiRepresent the pressure transducer that X is located in arranging w-th Pipe bundle structure at i positions, X=m or n, X=m
The pressure transducer in upper row's Pipe bundle structure is represented, X=n represents the pressure sensing in lower row's Pipe bundle structure
Device, w represent the sequence number of Pipe bundle structure in a row, and i represents the ordinal position of four pressure transducers in same Pipe bundle structure；
4), in reaction effluent air cooler running, the data acquisition of real-time pressure is carried out to all pressure transducers,
And each draw the real-time pressure value curve in unit interval t；
5) for four pressure transducers being installed on same Pipe bundle structure, calculate the pressure value for obtaining that monitoring is obtained
Geometrical mean；
6) according to step 3) each pressure transducer P for being obtainedXwiPressure calibration valueWith place Pipe bundle structure
Pressure geometrical meanPressure divergence value K is obtained by data processing.
It is III grade of risk if deviation K ＜ 1%, is II grade of risk if 1%≤K of deviation ＜ 5%, if deviation K
>=5% is I grade of risk；
7) according to step 6) pressure divergence value K that calculates, if pressure divergence value K >=5%, then it is assumed that pressure transducer
There is corrosion leakage in the Pipe bundle structure at place, the reduced pressure in tube bank, causes the axial thrust load F of compaction pressure sensorxDrop
It is low, this appropriate to the occasion employing following measures：
By the first tightening nut 2 of 1 end of rotary extension pipeline section by flexible pipeline section 1 to precession in tube bank 5, Shi Xi centers
The horizontal radial through hole 15 of tube bank 5 in the 1 endcapped entrance bobbin carriage 16 of flexible pipeline section of blind hole, so as to close in entrance bobbin carriage 16
Portion's multiphase flow medium leads to the passage of tube bank 5；And by inner screw plug 27 towards 5 direction precession outer pipe plugs 26 of tube bank so that interior
The centre bore of 27 end-enclosed sleeve pipe of plug, 18 end face, the connection for exporting and exporting between bobbin carriage 24 so as to close sleeve pipe 18 lead to
, there is big corrosion leakage situation so as to avoid place Pipe bundle structure, reduce booster risk, and can ensure that hydrogenation air cooling pipe in road
Beam system is not stopped work continuous service, and being stopped work after the operation test cycle to be achieved again carries out tube bank replacing.
Need specified otherwise is：What the tube bank 5 in entrance bobbin carriage 16 was opened up is horizontal radial through hole 15, and its reason exists
If the medium for entering entrance bobbin carriage 16 in Jing inlet flanges 33 is gas-liquid-solid multiphase flow, cause to restrain bottom to prevent gravity from affecting
Liquid-solid phase is more, is horizontal radial through hole 15 so as to what is opened up, it is possible to achieve gas-liquid-solid multiphase flow medium well into tube bank 5,
Avoid blocking.And if be only gas phase into the medium of entrance bobbin carriage 16, then do not consider the operating mode of density variation, then level
Radial direction through hole can also be changed to vertical radial direction through hole.
Similar, the reaction effluent air cooler bundles of bundles of tubes that the embodiment of the present invention is given is two-tube row's structure, same suitable
For the Pipe bundle structure of other such as single tube row, many bank of tubes or single tube banks, protection scope of the present invention should not necessarily be limited by above-mentioned double
Bank of tubes structure.
Claims (8)
1. it is a kind of prevent ammonium-salt flow corrode gross leak booster risk hydrogenation air cooling tube bundle system, it is characterised in that：Including entering
Mouth bobbin carriage (16), outlet bobbin carriage (24), tube bank (5), thick-walled pipe (17), flexible pipeline section (1), pressure transducer (21) and screw thread pressure
Tight part (22)；Entrance bobbin carriage (16) and outlet bobbin carriage (24) be arranged in parallel and along cross section be rectangle, entrance bobbin carriage (16) cloth
The tube bank (5) of two rows horizontal parallel is equipped with, (5) two ends is restrained per root and is passed through entrance bobbin carriage (16) and is restrained (5) and enter
Interference fit between the through hole of mouthful (16) two side box plate of bobbin carriage, tube bank (5) the side wall in entrance bobbin carriage (16) be provided with for
Medium is flowed into the horizontal radial through hole (15) in tube bank (5), is pressed by sealing away from tube bank (5) one end of outlet bobbin carriage (24)
Tight component is tightly connected with entrance bobbin carriage (16)；Connect with thick-walled pipe (17) one end near tube bank (5) one end of outlet bobbin carriage (24)
Connect, the through hole connection of thick-walled pipe (17) other end Jing pressure sensor modules and outlet (24) one side box plate of bobbin carriage exports bobbin carriage
(24) the plug component of retaining pressure sensory package middle sleeve (18) when the through hole of another side box plate is provided with for leaking；Tube bank
(5) central through hole is provided with, the interior spiral shell for coordinating with flexible pipeline section (1) external screw thread in the central through hole for restraining (5) end, is provided with
Stricture of vagina.
2. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 1 restrains system
System, it is characterised in that：The sealing holds down assembly including indent notch cuttype fixed stop (31), evagination notch cuttype compact heap (32)
With flexible pipeline section (1)；Stretch out entrance bobbin carriage (16) tube bank (5) outward and be set with indent notch cuttype fixed stop (31) and outer convex rank
Ladder type compact heap (32), indent notch cuttype fixed stop (31) end face couple solid by welding with entrance bobbin carriage (16) side box plate
Fixed, evagination notch cuttype compact heap (32) is another with indent notch cuttype fixed stop (31) by attachment bolt (30) and nut (29)
End face is fixedly connected, and indent notch cuttype fixed stop (31) the through hole hole wall being connected with tube bank (5) outer wall opens up two seals groove,
Two seals groove is respectively embedded into the first O-ring seal (14) and the second O-ring seal (13)；Indent notch cuttype fixed stop (31)
It is ladder type end side with the connecting end surface between evagination notch cuttype compact heap (32), ladder type end side installs the from inside to outside successively
One sealing ring (12), the second sealing ring (11) and the 3rd sealing ring (10), cause indent notch cuttype to fix by three sealing rings
Multistage pressure sealing structure is constituted between block (31) and evagination notch cuttype compact heap (32)；
Stretch out entrance bobbin carriage (16) tube bank (5) end face outward and be milled with shoulder hole, the big end of shoulder hole is provided with female thread, shoulder hole small end
The central through hole of (5) is restrained as；Flexible pipeline section (1) is inserted in tube bank (5) shoulder hole, and flexible pipeline section (1) is inserted in tube bank (5)
One end is milled with central blind hole, and flexible pipeline section (1) other end car has the ladder shaft shoulder, the pipeline section at pipeline section (1) the ladder shaft shoulder that stretches to
It is outer to be set with elastic seal ring (9), slide block baffle plate (8) and shaft end block (4) successively, and the is equipped with flexible pipeline section (1) end
One tightening nut (2) and the first pad (3), by the first tightening nut (2) and the first pad (3) axial compression shaft end block
(4), the big end threaded connection of shaft end block (4) and tube bank (5) shoulder hole.
3. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 2 restrains system
System, it is characterised in that：There is gap, the second pad between described slide block baffle plate (8) and the big end inwall of tube bank (5) shoulder hole
(7) it is connected between slide block baffle plate (8) and the big end inwall of tube bank (5) shoulder hole and is supported on shaft end block (4) end face.
4. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 2 restrains system
System, it is characterised in that：The 3rd O-ring seal is embedded between described slide block baffle plate (8) and the joining end face of shaft end block (4)
(6)。
5. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 1 restrains system
System, it is characterised in that：Described pressure sensor module include sleeve pipe (18), pressure transducer (21), screw thread compressing member (22) and
Second tightening nut (23), the internal diameter of the thick-walled pipe (17) one end and external diameter connected with tube bank (5) respectively with tube bank (5)
Internal diameter is identical with external diameter, and by being welded and fixed between tube bank (5) and thick-walled pipe (17), the external diameter of thick-walled pipe (17) other end becomes
Greatly, thick-walled pipe (17) other end is stretched into outlet bobbin carriage (24) and is welded with outlet bobbin carriage (24) side box plate, near outlet bobbin carriage
(24) thick-walled pipe (17) one end of side box plate is milled with indent notch cuttype centre bore, and the interior of thick-walled pipe (17) is inserted in sleeve pipe (18) one end
In recessed notch cuttype centre bore, sleeve pipe (18) is inserted in outside the end of indent notch cuttype centre bore and is milled with male type hierarchic structure, evagination
The stepped sealed structure of composition is engaged between type hierarchic structure and indent notch cuttype centre bore, and is set between stair-step successively
Put primary seal circle (19) and secondary seal circle (20)；Sleeve pipe (18) and heavy wall at sleeve pipe (18) male type hierarchic structure maximum end
Radial clearance between pipe (17) inwall has been embedded in pressure transducer (21), and pressure transducer (21) sleeve pipe (18) outward is another
Screw thread compressing member (22) and the second tightening nut (23), screw thread compressing member (22) and thick-walled pipe (17) indent notch cuttype are cased with end
The maximum end of centre bore forms screw thread and coordinates, and pressure transducer (21) is pressed on sleeve pipe (18) outward by screw thread compressing member (22)
At step between convex hierarchic structure maximum end and sleeve pipe (18) other end, screw thread compressing member (22) is screwed axially through second
Nut (23) is fixed.
6. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 1 restrains system
System, it is characterised in that：Described plug component includes outer pipe plug (26) and inner screw plug (27), with going out for thick-walled pipe (17) connecting side
Another side box plate of mouth bobbin carriage (24) offers the through hole coaxial with thick-walled pipe (17), and through hole is built with outer pipe plug (26), outer pipe plug
(26) it is connected and fixed with boxboard by welding, outer pipe plug (26) is provided with tapped through hole, and inner screw plug (27) is by being threaded into outer silk
Form thread connection to coordinate in the tapped through hole of stifled (26), inner screw plug (27) the side wall in outlet bobbin carriage (24) is circumferentially opened up
There is an annular groove, annular groove is embedded in outer pipe plug sealing ring (25), outer pipe plug sealing ring (25) causes outer pipe plug (26) and interior
Plug (27) is mutually tightly connected.
7. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 1 restrains system
System, it is characterised in that：The centre bore for stretching into described flexible pipeline section (1) one end end face in entrance bobbin carriage (16) is taper hole.
8. a kind of hydrogenation air cooling for preventing ammonium-salt flow corrosion gross leak booster risk according to claim 1 restrains system
System, it is characterised in that：It is taper hole to stretch into sleeve pipe (18) one end centre bore in thick-walled pipe (17) indent notch cuttype centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228997.1A CN106524821B (en) | 2016-12-27 | 2016-12-27 | Prevent the hydrogenation air cooling tube bundle system of ammonium-salt flow corrosion gross leak booster risk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611228997.1A CN106524821B (en) | 2016-12-27 | 2016-12-27 | Prevent the hydrogenation air cooling tube bundle system of ammonium-salt flow corrosion gross leak booster risk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106524821A true CN106524821A (en) | 2017-03-22 |
| CN106524821B CN106524821B (en) | 2018-07-31 |
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ID=58337692
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|---|---|---|---|
| CN201611228997.1A Active CN106524821B (en) | 2016-12-27 | 2016-12-27 | Prevent the hydrogenation air cooling tube bundle system of ammonium-salt flow corrosion gross leak booster risk |
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| CN203100526U (en) * | 2013-01-25 | 2013-07-31 | 西安航新石化设备有限责任公司 | High-pressure air cooler channel and screwed plug sealing device thereof |
| GB2524260A (en) * | 2014-03-17 | 2015-09-23 | Linde Ag | Air cooler for hydrogen process application having special header design and repair procedure |
| CN206330466U (en) * | 2016-12-27 | 2017-07-14 | 浙江理工大学 | Prevent that ammonium-salt flow from corroding the hydrogenation air cooling tube bundle device of gross leak booster risk |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5323849A (en) * | 1993-04-21 | 1994-06-28 | The United States Of America As Represented By The Secretary Of The Navy | Corrosion resistant shell and tube heat exchanger and a method of repairing the same |
| CN201569337U (en) * | 2009-12-01 | 2010-09-01 | 攀枝花新钢钒股份有限公司 | Shell and tube heat exchanger |
| CN201751794U (en) * | 2010-06-24 | 2011-02-23 | 潘传洪 | Pipe box of air cooler with threaded locking ring |
| CN203100526U (en) * | 2013-01-25 | 2013-07-31 | 西安航新石化设备有限责任公司 | High-pressure air cooler channel and screwed plug sealing device thereof |
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| CN106524821B (en) | 2018-07-31 |
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