CN110441158A - A kind of coiled pipe heat exchange module hydraulic test method - Google Patents
A kind of coiled pipe heat exchange module hydraulic test method Download PDFInfo
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- CN110441158A CN110441158A CN201910762607.6A CN201910762607A CN110441158A CN 110441158 A CN110441158 A CN 110441158A CN 201910762607 A CN201910762607 A CN 201910762607A CN 110441158 A CN110441158 A CN 110441158A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
Abstract
The invention discloses a kind of coiled pipe heat exchange module hydraulic test methods, comprising the following steps: step (1): high-pressure hydraulic pump first being connected header water inlet pipe, hydraulic press connects header exhaust pipe；Step (2): water is quickly poured into coiled pipe heat exchange module, shuts down high-pressure hydraulic pump after filling water and block header drainpipe by starting high-pressure hydraulic pump；Step (3): starting hydraulic press carries out boosting pressure maintaining to coiled pipe heat exchange module, and carries out leak test, and no leakage is qualification；Step (4): lower nozzle end socket is unloaded, it discharges water, then centrifugal high pressure fan is connected into the header water inlet pipe of coiled pipe heat exchange module and starts centrifugal high pressure fan, it is drained to Wind Volume purging is carried out inside coiled pipe heat exchange module, continuous purging shuts down centrifugal high pressure fan to the anhydrous water clock of header drainpipe nozzle and when header bottom is without ponding.The invention has the advantages that (1) water pressure test irrigation period is short, high production efficiency；(2) ponding in module after the water pressure test can be discharged completely.
Description
Technical field
The present invention relates to the Hydraulic test technique fields of energy-saving and emission-reduction heat-exchanger rig, and in particular to a kind of coiled pipe heat exchange mould
Block hydraulic test method.
Background technique
The material base that the energy is depended on for existence and development as human society, is paid much attention to by countries in the world always, China
No exception, especially in current new historical periods, for the paces for accelerating China's Ecological Civilization Construction, energy-saving and emission-reduction are to build
The inevitable choice of vertical resource-conserving and environment-friendly society.Energy-saving and emission-reduction are a Xiang Changyuan of China's economy and society development
Strategy and policy and an extremely urgent task.Recovery waste heat reduces energy consumption and realizes energy-saving and emission-reduction, environmental protection development war to China
Slightly have important practical significance.Meanwhile UTILIZATION OF VESIDUAL HEAT IN to improve working conditions, it is energy saving, increase production, improve product
Quality, reduction production cost etc. play increasing effect, and some has become indivisible composition in industrial production
Part.
Exhaust Gas Heat Loss for Utility Boiler is one of main heat loss in thermal power plant, utilizes system using smoke discharging residual heat
Exhaust gas temperature is reduced, the economy of power plant can be greatly improved, is one of the important channel for improving generatine set heat efficiency.Currently, domestic
Many power plant reduce exhaust gas temperature using low-level (stack-gas) economizer technology, improve economy of power plant.By several coiled pipe heat exchange modules
The heat-exchanger rig assembled is one of the necessary device of low-level (stack-gas) economizer technology, the superiority and inferiority of coiled pipe heat exchange module performance, directly
It connects and affects dust collection efficiency and system equipment Acceptable life.Coiled pipe heat exchange module used at present generally comprises:
Water inlet header, water outlet header and several row's snakelike heat exchange tubes between water inlet header and water outlet header, in water inlet header
On be provided with header water inlet pipe, water outlet header on be provided with header drainpipe and header exhaust pipe.
The water pressure test is one of coiled pipe heat exchange module manufacture most important process of link, to detect coiled pipe heat exchange mould
Block whether there is leakage, whether can bear postrun pressure and the burn-through with the presence or absence of welded seam, solder skip and crackle
Etc. obvious shortcomings.
The water pressure test mainly includes pouring water, pressure maintaining, draining three big steps, when pouring water, first by the collection of coiled pipe heat exchange module
Case drainpipe and header exhaust pipe are blocked, and header water inlet pipe is directly then directly accessed water source, after filling water, will be collected
Case water inlet pipe is blocked；When pressure maintaining, header exhaust pipe is connected into hydraulic press, hydraulic press in coiled pipe heat exchange module to rising
Simultaneously pressure maintaining is pressed, checks whether coiled pipe heat exchange module leaks at this time；When draining, header exhaust pipe is directly opened, is made snakelike
Water in pipe heat exchange module flows out naturally.
The water pressure test has the disadvantage in that at present
(1) water pressure test irrigation period is long, and production efficiency is low；
(2) due to the architectural characteristic of coiled pipe heat exchange module (coiled pipe adds collection box structure), the elbow of coiled pipe is all welding pair
It connects, can be deformed when due to tube welding, and it is all horizontal welding that factory's manufacture, which not can guarantee every root canal, yet, so
Coiled pipe generally will not be substantially flat, causes centainly to have ponding in module after draining, and due to the intake-outlet of header tank
It will not be module minimum point, cause to be not clean when draining；Header bottom also has ponding, and when draining can not be by module inner product
Water excludes completely, topples over even if taking and repeatedly waving, water can not thoroughly be discharged in module.Ponding in module can corrode pipe
Wall, bursting by freezing pipe can generate a series of failure hidden danger, shorten the service life of heat-exchanger rig, be power plant's production run safety
Security risk is buried.
Water pressure test module ponding is at the problem of the whole industries such as economizer, membrane wall, LGGH, at present in country's industry also
Heat exchange module internal water accumulation can be excluded without one clean.
Summary of the invention
It is short the object of the present invention is to provide a kind of irrigation period and module internal water accumulation can be excluded completely to clean coiled pipe
Heat exchange module hydraulic test method.
To achieve the above object, present invention employs following technical solutions: a kind of coiled pipe heat exchange module hydraulic pressure
Test method, comprising the following steps:
Step (1): first by the header water inlet pipe of high-pressure hydraulic pump connection coiled pipe heat exchange module, then hydraulic press is connected into coiled pipe and is changed
The header exhaust pipe of thermal modules；
Step (2): starting high-pressure hydraulic pump, water is quickly poured into coiled pipe heat exchange module and to coiled pipe heat exchange module inside
Rubbish incidental carries out punching and sweeps；When filled in coiled pipe heat exchange module water and from header drainpipe flow out water without rubbish incidental when,
Shut down high-pressure hydraulic pump；Then header drainpipe is blocked with nozzle end socket；
Step (3): starting hydraulic press boosts to coiled pipe heat exchange module, rises to the pressure in coiled pipe heat exchange module
After module operating pressures, stops boosting and carry out preliminary leak test, be further continued for boosting to module test pressure after firmly believing No leakage
Power is then turned off hydraulic press pressure maintaining certain time and carries out second of leak test, is then depressurized to module operating pressures and goes forward side by side
Row third time leak test, no leakage are qualification；
Step (4): unloading the nozzle end socket on lower header drainpipe, releases the water in coiled pipe heat exchange module, then by high pressure from
The heart blower connection coiled pipe heat exchange module header water inlet pipe simultaneously start centrifugal high pressure fan, to inside coiled pipe heat exchange module into
The purging draining of row Wind Volume, continuous purging shut down high pressure to the anhydrous water clock of header drainpipe nozzle and when header bottom is without ponding
Centrifugal blower.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: high-pressure hydraulic pump and centrifugal high pressure
Blower is connected simultaneously by commutation connecting tube group and mutually seals the high pressure sealing banjo fixing butt jointing docked with header water inlet pipe, commutation connection
Guan Zuneng makes high pressure sealing banjo fixing butt jointing only be connected with high-pressure hydraulic pump or only be connected with centrifugal high pressure fan.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: the structure of commutation connecting tube group
It include: the water inlet pipe that the outlet with high-pressure hydraulic pump is connected, the winding pipe being connected with the outlet of centrifugal high pressure fan, with
The connection general pipeline and three-way diverter valve that high pressure sealing banjo fixing butt jointing is connected, two imports difference of the three-way diverter valve
It is connected with water inlet pipe and winding pipe, the outlet of the three-way diverter valve is connected with general pipeline is connect.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: high pressure sealing banjo fixing butt jointing
Structure includes: the adapter tube and casing being sequentially distributed along waterflood direction, one end far from casing in the two sides pipe end of the adapter tube
It is water outlet for water inlet end, close to one end of casing, the water outlet of adapter tube is provided with pipe connecting flange disk, the two sides of described sleeve pipe
In pipe end close to adapter tube one end be water inlet end, far from adapter tube one end be water outlet, the water outlet of casing be provided with to
The fixed mechanism that casing and header water inlet pipe are sealed connected together, is provided with casing flange disk, In in the water inlet end of casing
Casing flange disk is provided centrally with spring positioning platform, and spring positioning platform is by several circumferentially outside spring positioning platform
Spoke bar be connected with casing flange disk；Be provided between casing flange disk and pipe connecting flange disk to by casing and adapter tube
Water passage is collectively formed in the stay tube being connected, adapter tube, stay tube and casing three, and adapter tube, stay tube and casing three pass through fastening
Component is connected to a fixed together, only open gate is provided between spring positioning platform and the water outlet of adapter tube, only open gate and spring
It is connected with spring between positioning table, spring makes only open gate have the trend of the water outlet end face for being pressed on adapter tube always；Work as adapter tube
When the hydraulic pressure of side is greater than the sum of acting force of the spring and casing side hydraulic pressure, only open gate can leave adapter tube under the action of adapter tube side hydraulic pressure
Water outlet end face, to open water passage, when the hydraulic pressure of casing side is greater than the hydraulic pressure of adapter tube side, only open gate is in casing side water
It can be pressed on the water outlet end face of adapter tube under pressure and the collective effect of spring, to cut off water passage.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: the structure packet of fixed mechanism
Include: the internal diameter of the water outlet of casing is greater than the internal diameter of the water inlet end of casing, to be formed at the variable diameter of internal surface of sleeve pipe for header
Intake end surfaces against annular convex shoulder, seal washer is provided on annular convex shoulder；The fixing sleeve outside the water outlet of casing
Disk is bound round equipped with pricking, is respectively arranged with one axially through the mounting hole for pricking hoop disk in the quadrangle for pricking hoop disk；Further including two can block
U-shaped in header pricks hoop, and the outer end for the two sides straight section that every U-shaped pricks hoop is thread segment, and two U-shapeds are pricked hoop and respectively corresponded
A pair of of mounting hole of the hoop upper and lower two sides of disk is pricked, every U-shaped bundle hoop is stuck in header by U-shaped bayonet and every U-shaped pricks hoop
Two sides straight section be each passed through corresponding mounting hole and be threaded with locking nut, screw all locking nuts, make inlet and outlet pipes
End face be pressed on the seal washer of casing annular convex shoulder, so that inlet and outlet pipes be made to connect with bobbin seal outside it is covered
It is connected together.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: the structure packet of fastening assembly
It includes: it is circumferentially arranged on pipe connecting flange disk to have several first through hole axially through pipe connecting flange disk, in casing flange disk
It is circumferentially arranged to have several the second through-holes axially through casing flange disk, the first through hole and casing flange disk of pipe connecting flange disk
The second through-hole correspond, be equipped with a fastening bolt respectively in each pair of corresponding first through hole and the second through-hole, often
The screw rod of root fastening bolt is threadedly coupled a fastening nut after passing through corresponding first through hole and the second through-hole respectively, screws institute
There is fastening nut, makes pipe connecting flange disk and casing flange disk is in opposite shape sealed clamping stay tube, to make casing, stay tube and adapter tube
Three is detachably connected to be fixed together.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: in casing flange disk and adapter tube
The annular positioning groove for stay tube insertion is respectively arranged on the opposite side end face of ring flange, the two sides pipe end of stay tube is respectively embedded into two
The corresponding annular positioning groove in side, is placed with respectively in each annular positioning groove to gap between sealing flange and stay tube
First seal washer；It is provided with the second seal washer between only open gate and adapter tube water outlet end face, when only open gate passes through second
When seal washer is pressed on adapter tube water outlet end face, between the second seal washer can seal between only open gate and adapter tube water outlet end face
Gap.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: pacify respectively on every spoke bar
The conduit of pipe connecting flange disk is axially extended to equipped with one, all conduits are centered around on the outside of only open gate, and all conduits are collectively formed
Only open gate can be made accurately to be moved to the guide channel of adapter tube water outlet end face.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: hydraulic press is by being set to it
The pipe end joint sealing docking header exhaust pipe of outlet connecting pipe pipe end, the structure of the pipe end joint includes: hollow center
Pipe, is provided with pressure gauge in one end of central tube, pressure gauge is connected by the bypass pipe with check valve with central tube, at center
It is threadedly coupled on pipe there are two locking nut, successively movable sleeve is equipped with a flexibility on the central tube between two locking nuts
Casing and two push collar, are provided with locking positioning ring between two push collar, and locking positioning ring is independent by several valves
Arc shaft tile composition, the outer wall of every valve arc shaft tile it is peripherally disposed have it is outside convenient for arc shaft tile both ends
The receipts of opening are swollen groove, every valve arc shaft tile are in thin and thick middle shape setting along axial ends, make locking positioning ring
Both ends are formed convenient for the tapered channel of push collar push-in, and when tightening locking nut, locking nut can be by two push collar edges
Ipsilateral tapered channel is pushed into locking positioning ring, is flared out the both ends of each valve arc shaft tile of locking positioning ring respectively and pipe end
Inner wall phase swelling continues to tighten locking nut extruding flexible sleeve, flexible sleeve is made to be radially expanded center seal pipe and pipe end
Gap between inner wall.
Further, a kind of coiled pipe heat exchange module hydraulic test method above-mentioned, in which: the structure packet of nozzle end socket
Include: center bolt is threaded with a locking nut at the both ends of center bolt respectively, between two locking nuts in
Successively movable sleeve is equipped with a flexible sleeve and two push collar on heart screw rod, is provided with locking between two push collar
Positioning ring, locking positioning ring are made of the independent arc shaft tile of several valves, circumferentially square in the outer wall of every valve arc shaft tile
Receive swollen groove to being provided with convenient for arc shaft tile both ends are outward, every valve arc shaft tile be in it is thin along axial ends and in
Between thick shape setting, form the both ends of locking positioning ring convenient for the tapered channel of push collar push-in, tighten locking nut
When, two push collar can be pushed into locking positioning ring along ipsilateral tapered channel by locking nut, make each valve arc of locking positioning ring
The both ends of bearing shell piece are flared out respectively to be positioned with internal wall of pipe orifice phase swelling, is continued to tighten locking nut extruding flexible sleeve, be made
Flexible sleeve is radially expanded line up and is sealed.
Through the implementation of the above technical solution, the beneficial effects of the present invention are:
(1) it is poured water by big yield, water pressure test irrigation period is short, high production efficiency；
(2) it is purged and is drained by Wind Volume, the ponding in module after the water pressure test can be discharged completely, to eliminate because of mould
There is ponding in block and a series of failure hidden danger such as tube wall corrosion, pipe bursting by freezing for occurring, substantially prolongs the use of heat-exchanger rig
Service life, it is ensured that power plant's production run safety；
(3) structure of high pressure sealing banjo fixing butt jointing is simple, easy to operate, and dismounting is easy to maintenance, time saving and energy saving, substantially increases work
Make efficiency；
(4) structure of nozzle end socket is simple and convenient to operate, use cost is low, the good fixing effect with pipe end；It can bear higher
Pressure, and Acceptable life is long；Without exiting the parts such as the locking nut on center bolt, so that it may tear locking positioning ring open
Lower carry out repair and replacement, simplify maintenance procedures, improve maintenance efficiency.
(5) structure of pipe end joint is simple, the good fixing effect with pipe end, and stability in use is high；It is close between pipe end
It is good to seal effect, pressure-bearing is high, provides effective guarantee for being normally carried out for the water pressure test；It is easy to operate, long service life, using at
This is low, and dismounting is easy to maintenance, can without exiting the parts such as the locking nut on central tube when especially repairing to tube expansion
Tube expansion is removed into carry out repair and replacement, maintenance procedures is simplified, improves maintenance efficiency；It is vdiverse in function, pressure gauge reality can be passed through
When accurately understand real-time pressure inside coiled pipe heat exchange module.
Detailed description of the invention
Fig. 1 is high-pressure hydraulic pump, centrifugal high pressure in a kind of coiled pipe heat exchange module hydraulic test method of the present invention
Blower, hydraulic press, high pressure sealing banjo fixing butt jointing, nozzle end socket and pipe end joint use state diagram.
Fig. 2 is the structural schematic diagram of high pressure sealing banjo fixing butt jointing shown in Fig. 1.
Fig. 3 is the enlarged diagram at the position H shown in Fig. 2.
Fig. 4 is the structural schematic diagram of casing flange disk shown in Fig. 2 right view direction.
Fig. 5 be high pressure sealing banjo fixing butt jointing shown in Fig. 2 with connect general pipeline it is unassembled when both structural schematic diagram.
Fig. 6 is the structural schematic diagram of nozzle end socket shown in Fig. 1.
Fig. 7 is the use state diagram of Fig. 6.
Fig. 8 is the structural schematic diagram of pipe end joint shown in Fig. 1.
Fig. 9 is the use state diagram of Fig. 8.
Figure 10 is the structural schematic diagram of central tube shown in fig. 8.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 1, a kind of coiled pipe heat exchange module hydraulic test method includes following water test unit, packet
Include high-pressure hydraulic pump 1, centrifugal high pressure fan 2, to seal the high pressure docked with 31 phase of header water inlet pipe of coiled pipe heat exchange module 3
Seal banjo fixing butt jointing 4, the nozzle end socket 5 and hydraulic press of the header drainpipe 32 to sealing blocking coiled pipe heat exchange module 3
6, it is provided in the pipe end of the outlet connecting pipe 61 of hydraulic press 6 to mutually close with the header exhaust pipe 33 of coiled pipe heat exchange module 3
The pipe end joint 7 of docking is sealed, the high pressure sealing banjo fixing butt jointing 4 connects high-pressure hydraulic pump 1 and height by commutation connecting tube group simultaneously
Press centrifugal blower 2, commutation connecting tube group can make high pressure sealing banjo fixing butt jointing 4 be only connected with high-pressure hydraulic pump 1 or only and high pressure from
Heart blower 2 is connected；
In the present embodiment, as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, the structure of the high pressure sealing banjo fixing butt jointing include: including
It the adapter tube 41 that is sequentially distributed along waterflood direction and socket-connects to the header water inlet pipe 31 with coiled pipe heat exchange module 3
Casing 42, one end in the two sides pipe end of the adapter tube 41 far from casing 42 be water inlet end, close to one end of casing 42 be water outlet
End, is provided with quick nipple 43 in the water inlet end of adapter tube 41, the water outlet of adapter tube 41 is provided with pipe connecting flange disk 44, described
One end in the two sides pipe end of casing 42 close to adapter tube 41 is water inlet end, one end far from adapter tube 41 is water outlet, in casing 42
Water outlet be provided with the fixed mechanism casing 42 and header water inlet pipe 31 to be sealed connected together, casing 42 into
Water end (W.E.) is provided with casing flange disk 45, is provided centrally with spring positioning platform 46 in casing flange disk 45, spring positioning platform 46 is logical
Several spoke bars 47 circumferentially outside spring positioning platform 46 are crossed to be connected with casing flange disk 45；In casing flange disk
Be provided with the stay tube 48 casing 42 to be connected with adapter tube 41 between 45 and pipe connecting flange disk 44, adapter tube 41, stay tube 48 and
Water passage is collectively formed in 42 three of casing, and casing 42, stay tube 48 and 41 three of adapter tube are connected to a fixed by fastening assembly
Together, only open gate 49 are provided between spring positioning platform 46 and the water outlet of adapter tube 41, only open gate 49 and spring positioning platform 46
Between be connected with spring 410, spring 410 makes only open gate 49 have the trend of the water outlet end face for being pressed on adapter tube 41 always；When
Take over side hydraulic pressure be greater than the sum of acting force of the spring and casing side hydraulic pressure when, only open gate 49 under the action of adapter tube side hydraulic pressure understand from
It opens adapter tube water outlet end face and opens water passage, when the hydraulic pressure of casing side is greater than the hydraulic pressure of adapter tube side, only open gate 49 is covering
It can be pressed on the water outlet end face of adapter tube 41 under the collective effect of pipe side hydraulic pressure and spring 410, to cut off water passage；
In the present embodiment, the structure of fixed mechanism includes: that the internal diameter of the water outlet of casing 42 is greater than the water inlet end of casing 42
Internal diameter, thus at the variable diameter of 42 inner wall of casing formed for header intake out end surfaces against annular convex shoulder, in convex annular
The first seal washer 411 is provided on shoulder；Fixing sleeve binds round disk 412 pricking equipped with hoop disk 412 is pricked outside the water outlet of casing 42
Quadrangle be respectively arranged with one axially through prick hoop disk 412 mounting hole；It further include that two U-shapeds that can be stuck in header prick hoop
413, the outer end for the two sides straight section that every U-shaped pricks hoop 413 is thread segment, and two U-shapeds prick hoop 413 and respectively correspond bundle hoop disk
A pair of of mounting hole of 412 upper and lower two sides, every U-shaped bundle hoop 413 is stuck in header by U-shaped bayonet and every U-shaped pricks hoop
413 two sides straight section is each passed through corresponding mounting hole and is threaded with the first locking nut 414, screws all first locking screws
Mother 414, the end face of inlet and outlet pipes can be pressed on the first seal washer 411 of annular convex shoulder, thus make header water inlet pipe 31 with
It covers the casing 42 outside it to be sealed connected together, above-mentioned fixed mechanism structure is simple, and dismounting is easy to maintenance, substantially increases
Working efficiency；
In the present embodiment, the structure of fastening assembly include: on pipe connecting flange disk 44 it is circumferentially arranged have it is several axially through
The first through hole 441 of pipe connecting flange disk 44, in casing flange disk 45 it is circumferentially arranged have it is several axially through casing flange disk
45 the second through-hole 451, the first through hole 441 of pipe connecting flange disk 44 and the second through-hole 451 of casing flange disk 45 correspond,
It is equipped with a fastening bolt 415, every fastening bolt respectively in each pair of corresponding first through hole 441 and the second through-hole 451
415 screw rod is threadedly coupled a fastening nut 416 after passing through corresponding first through hole 441 and the second through-hole 451 respectively, screws
All fastening nuts 416, make pipe connecting flange disk 44 and casing flange disk 45 is in opposite shape sealed clamping stay tube 48, to make casing
42, stay tube 48 and 41 three of adapter tube is detachably connected is fixed together, above-mentioned fastening assembly structure is simple, can facilitate casing,
Stay tube and the dismounting maintenance for taking over three, improve assembly and maintenance efficiency；
In the present embodiment, it is respectively arranged on the opposite side end face of casing flange disk 45 and pipe connecting flange disk 44 for stay tube 48
The annular positioning groove of insertion, the two sides pipe end of stay tube 48 is respectively embedded into the corresponding annular positioning groove in two sides, in each circular orientation
The second seal washer 417 to gap between sealing flange and stay tube 48 is placed in slot respectively, set can be improved in this way
Pipe, stay tube and the sealing effect for taking over three, improve the stability in use of equipment；In the present embodiment, only open gate 49 with
Adapter tube is provided with third seal washer 418 between 41 water outlet end face, when only open gate 49 is pressed on by third seal washer 418
When taking over water outlet end face, third seal washer 418 can seal gap between 41 water outlet end face of only open gate 49 and adapter tube, in this way
Only open gate can be improved and take over the sealing effect between the end face of water outlet, further improve the stability in use of equipment；
In the present embodiment, the conduit 421 for axially extending to pipe connecting flange disk 44 is separately installed on every spoke bar 47,
All conduits 421 are centered around the only outside of open gate 49, all conduits 421 be collectively formed can make only open gate 49 be accurately moved to adapter tube
The guide channel of 41 water outlets end face, can be further improved the stability in use of equipment in this way；In the present embodiment, in spring
Positioning table 46 is provided centrally with the first positioning convex platform 461 being inserted in for spring protruded to adapter tube side, in only open gate 49
The heart is provided with the second positioning convex platform 491 being inserted in for spring protruded to casing side, and it is fixed that the both ends of spring 410 are respectively fitted over first
Position boss 461 and the second positioning convex platform 491 on, make so only open gate together with spring split installation, folding maintenance bullet
Spring and only open gate are more convenient；
In the present embodiment, as shown in Figure 6, Figure 7, the structure of the nozzle end socket 5 includes: solid center bolt 51, In
The threaded one end of center bolt 51 is connected with the second locking nut 52, the other end is threaded with third locking nut 53,
Successively being slidingly connected on center bolt 51 between two locking nuts 52 and third locking nut 53, there are two the first push collar
54 and first flexible sleeve 55 being made by rubber material or other elastic materials, in two the first push collar 54
Between be provided with the first locking positioning ring, the first locking positioning ring is made of the independent first arc shaft tile 56 of several valves, In
The outer wall of every the first arc shaft of valve tile 56 is peripherally disposed have it is outward convenient for 56 both ends of the first arc shaft tile
First receives swollen groove 57, and every the first arc shaft of valve tile 56 is in thin and thick middle shape setting along axial ends, makes the first lock
The both ends of tight positioning ring are formed convenient for the tapered channel of the first push collar 54 push-in, when the second locking nut 52 of tightening or third
When locking nut 53, two the first push collar 54 can be pushed into the first locking positioning ring along ipsilateral tapered channel, make the first lock
The both ends of each the first arc shaft of valve tile 56 of tight positioning ring are flared out the internal wall of pipe orifice phase swelling with header drainpipe 32 respectively
Positioning continues to tighten the second locking nut 52 or third locking nut 53 squeezes the first flexible sleeve 55, makes the first flexible sleeve
55, which are squeezed, is radially expanded and is sealed to the nozzle of header drainpipe 32；
In the present embodiment, the outer surface of the first arc shaft tile 56 is provided with the first serrated slot 59, passes through the first serrated slot
59 can improve the frictional force between the first arc shaft tile 56 and the internal wall of pipe orifice of header drainpipe 32, make the first arc shaft tile
It is more firmly fixed with the internal wall of pipe orifice phase swelling of header drainpipe 32, substantially increases the stability in use and safety of equipment
Property；In the present embodiment, it is covered on the center bolt 51 between the first flexible sleeve 55 and the second locking nut 52 of respective side
Equipped with the first support set 510, covered on the center bolt 51 between the first push collar 54 and the third locking nut 53 of respective side
Equipped with the second support set 511 and the first pipe sleeve 512, in this way convenient for adjusting position of the locking positioning ring in header drainpipe 32, grasp
It is more convenient；
As shown in Fig. 8, Fig. 9, Figure 10, the structure of the pipe end joint 7 includes: hollow central tube 71, in central tube 71
Side and the position of nozzle is provided with pressure gauge 72, pressure gauge 72 passes through the bypass pipe 74 with check valve 73 and central tube 71
It is connected, there are two locking nuts, i.e. the 4th locking nut 75 and the 5th locking nut 76, In for threaded connection on central tube 71
Successively being slidingly connected on central tube 71 between 4th locking nut 75 and the 5th locking nut 76, there are two the second push collar
77 and second flexible sleeve 78 made of rubber or other elastic materials, it is arranged between two the second push collar 77
There is the second locking positioning ring, the second locking positioning ring is made of the independent second arc shaft tile 79 of several valves, in every valve second
The outer wall of arc shaft tile 79 is peripherally disposed to be had convenient for the swollen ditch of outward second receipts in the second arc shaft tile both ends
Slot 710, every the second arc shaft of valve tile 79 are in thin and thick middle shape setting along axial ends, make the second locking positioning ring
Both ends are formed convenient for the tapered channel of the second push collar 77 push-in, when the 4th locking nut 75 of tightening or the 5th locking nut 76
When, two the second push collar 77 can be pushed into the second locking positioning ring along ipsilateral tapered channel, keep the second locking positioning ring each
The both ends of the second arc shaft of valve tile 79 are flared out the positioning of the inner wall phase swelling with header exhaust pipe 33 respectively, continue tightening the
Four locking nuts 75 or the 5th locking nut 76 squeeze the second flexible sleeve 78, and the second flexible sleeve 78 is made to be radially expanded sealing
Gap between central tube 71 and the inner wall of header exhaust pipe 33；In the present embodiment, in the appearance of the second arc shaft tile 79
Face is provided with the second serrated slot 711, can improve the second arc shaft tile 9 and header exhaust pipe 33 by the second serrated slot 711
Frictional force between inner wall fixes the second arc shaft tile more firmly with the inner wall phase swelling of header exhaust pipe 33, significantly
Improve stability in use and the safety of equipment；In the present embodiment, in the 4th lock of the second flexible sleeve 78 and respective side
It is arranged with third support set 712 on central tube 71 between tight nut 75, in the 5th locking of the second push collar 77 and respective side
It is arranged with the 4th support set 713 and the second pipe sleeve 714 on central tube 71 between nut 76, exists in this way convenient for adjusting locking positioning ring
Position in header exhaust pipe 33, more convenient operation；
In the present embodiment, the structure for the connecting tube group that commutates includes: the bigbore water inlet that the outlet with high-pressure hydraulic pump 1 is connected
Branch pipe 81, the bigbore winding pipe 82 being connected with the outlet of centrifugal high pressure fan 2, with 4 phase of high pressure sealing banjo fixing butt jointing
The bigbore connection general pipeline 83 of connection is provided with and adapter tube 41 in high pressure sealing banjo fixing butt jointing 4 in the pipe end of connection general pipeline 83
Quick nipple 43 match the quick coupling 831 quickly connected and three-way diverter valve 84, the three-way diverter valve 84
Two imports be connected respectively with water inlet pipe 81 and winding pipe 82, the outlet of the three-way diverter valve 84 with connect general pipeline
83 are connected；Above-mentioned commutation connecting tube group structure is simple, convenient to install and maintain；
In the present embodiment, be the automatization level for improving equipment, further include PLC control system 9, PLC control system 9 simultaneously with
High-pressure hydraulic pump 1, centrifugal high pressure fan 2, hydraulic press 6, the connection of 84 signal of three-way diverter valve, PLC control system 9 can control high pressure water
Pump 1, centrifugal high pressure fan 2, hydraulic press 6 and three-way diverter valve 84 are shut down；In the present embodiment, suitable in the import of high-pressure hydraulic pump 1
The waterflood direction filter 10 and flow control valve 11 that also set gradually, in this way can preferably to the flow of water and water quality into
Row control, improves the stability in use and safety in utilization of equipment；
A kind of coiled pipe heat exchange module hydraulic test method of the present invention, comprising the following steps:
Step (1): first high pressure sealing banjo fixing butt jointing is installed on header water inlet pipe 31, concrete operations are as follows: first removes U-shaped bundle
U-shaped is then pricked hoop 413 again and is stuck in by U-shaped bayonet into water by hoop 413 then by 42 sets of casing outside header water inlet pipe 31
In header and the two sides straight section that every U-shaped pricks hoop 413 is each passed through corresponding mounting hole rear thread and connects first locking screw
Mother 414, then screws all first locking nuts 414, and the end face of header water inlet pipe 31 is made to be pressed on the first close of annular convex shoulder
On seal washer 411, so that casing 41 be made to be sealed connected together with header water inlet pipe 31；Then the fast of 83 pipe end of general pipeline will be connected
Fast coupling 831 is quickly connected together with 43 phase of quick nipple on adapter tube 41, then again connects the import of filter 10
Enter water source；
Again by 33 phase of header exhaust pipe of the pipe end joint 7 of 61 pipe end of outlet connecting pipe of hydraulic press 6 and coiled pipe heat exchange module 3
Sealing docking, concrete operations are as follows: first by the 4th locking nut 75, third support set 712, the second flexible sleeve on central tube 71
78, the second locking positioning ring, the second push collar 77 and the 4th support set 713 protrude into the pipe end of header exhaust pipe 32 together, until
Pressure gauge 72 is located at behind the position of 32 nozzle of header exhaust pipe, tightens the 5th locking nut 76, and the 5th locking nut 76 exists
Two the second push collar 77 can be pushed into the second locking positioning ring along ipsilateral tapered channel in tightening process and squeezed simultaneously
Second flexible sleeve 78 is flared out the both ends of each the second arc shaft of valve tile 79 of the second locking positioning ring respectively and arranges with header
33 pipe end inner wall phase swelling of tracheae positioning continues to tighten the 5th locking nut 76 the second flexible sleeve 78 of extruding, makes the second flexibility
Casing 78 is radially expanded the gap between center seal pipe 71 and the inner wall of header exhaust pipe 33, completes pipe end joint 7 and collection
The sealing of case exhaust pipe 33 is docked；
Step (2): big yield is poured water:
(2.1) first make PLC control system 9 control three-way diverter valve 84 to commutate, connection general pipeline 83 is made only to be connected with water inlet pipe 81
It is logical, and make PLC control system control starting high-pressure hydraulic pump 1, by high pressure water successively through filter 10, stream after the starting of high-pressure hydraulic pump 1
Adjustable valve 11, high-pressure hydraulic pump 1, water inlet pipe 81, connection general pipeline 83 enter adapter tube 41, and the hydraulic pressure due to taking over side at this time is greater than
The sum of acting force of the spring and casing side hydraulic pressure, so only open gate 49 can leave adapter tube water outlet end under the action of adapter tube side hydraulic pressure
Face and open water passage, so that the high pressure water for being passed through adapter tube 41 is entered stay tube 48, and successively through casing 42 and header water inlet pipe 31
Each header and coiled pipe in coiled pipe heat exchange module quickly are poured into, the high pressure water poured into coiled pipe heat exchange module can be to coiled pipe
Rubbish incidental in heat exchange module 3 carries out punching and sweeps, and rubbish incidental is scanned out from the punching of header drainpipe 32；
(2.2) to fill water, and the water flowed out from the header drainpipe 32 of coiled pipe heat exchange module 3 in coiled pipe heat exchange module
When without rubbish incidental, so that the control of PLC control system 9 is closed three-way diverter valve 84 and is sent and stop high-pressure hydraulic pump 1；Then nozzle end socket is used
5 pairs of header drainpipes 32 block, and concrete operations are as follows: by the second locking nut on the center bolt 51 of nozzle end socket 5
52, the first support set 510, the first flexible sleeve 55, the first locking positioning ring and the first push collar 54 and the second support set 511 be together
Header drainpipe 32 is protruded into, then tightens third locking nut 53, meeting can be by two in tightening process for third locking nut 53
First push collar 54 is pushed into the first locking positioning ring along ipsilateral tapered channel, makes each the first arc shaft of valve of the first locking positioning ring
The both ends of tile 56 are flared out the positioning of the inner wall phase swelling with header drainpipe 32 respectively, then continue to tightening third locking screw
Mother 53 squeeze the first flexible sleeve 55, the first flexible sleeve 55 can be radially expanded after being squeezed header drainpipe 32 is carried out it is close
Envelope；
Step (3): pressure maintaining:
(3.1) make the control starting hydraulic press 6 of PLC control system 9, the pressure that hydraulic press 6 controls in coiled pipe heat exchange module 3 is slow
Rise, during the pressure in coiled pipe heat exchange module 3 gradually rises, when the casing side being connected with header water inlet pipe 31
When hydraulic pressure is greater than the hydraulic pressure of adapter tube side, only open gate 49 can be pressed on adapter tube under the collective effect of casing side hydraulic pressure and spring 410
Water passage is cut off on 41 water outlet end face, to carry out automatic-sealed closure, at this time coiled pipe to header water inlet pipe 31
Heat exchange module 3 is an opposite confined space, as hydraulic press 6 is to 3 persistent pressure pressure of coiled pipe heat exchange module, to coiled pipe
After pressure in heat exchange module 3 rises to module operating pressures, stops boosting and carry out preliminary leak test, firmly believe each butt tube
End good seal is further continued for boosting after not leaking；The concrete operations for carrying out leak test are as follows: first blowing off snake with compressed air
Ponding on 3 outer wall of shape pipe heat exchange module, then check whether each pipe of coiled pipe heat exchange module 3, weld seam occur with bright light torch
Leakage phenomenon；
(3.2) pressure gauge 72 is observed, rises to module test pressure and 72 pointer of pressure gauge to the pressure in coiled pipe heat exchange module 3
After stabilization, PLC control system 9 is made to shut down 6 20~30min of pressure maintaining of hydraulic press；The concrete operations of leak test are carried out such as when pressure maintaining
Under: the ponding on 3 outer wall of coiled pipe heat exchange module first is blown off with compressed air, then checks coiled pipe heat exchange module with bright light torch
Whether 3 each pipes, weld seam occur leakage phenomenon；
(3.3) module operating pressures are then depressurized to and carry out third time leak test, carry out the concrete operations of leak test such as
Under: the ponding on 3 outer wall of coiled pipe heat exchange module first is blown off with compressed air, then checks coiled pipe heat exchange module with bright light torch
Whether 3 each pipes, weld seam occur leakage phenomenon, and no leakage is qualification, to complete water pressure test leak test；
Step (4): Wind Volume draining:
(4.1) the nozzle end socket of lower header drainpipe 32 is unloaded, the water in coiled pipe heat exchange module 3 is released, then makes PLC control system
9 control three-way diverter valve 84 of system commutates again, so that connection general pipeline 83 is only connected with winding pipe 82, and make PLC control system
Control starting centrifugal high pressure fan 2, centrifugal high pressure fan 2 is arranged Wind Volume purging is carried out inside coiled pipe heat exchange module 3 at this time
Water, continuous purging is to the anhydrous water clock of 32 nozzle of header drainpipe and header bottom is without ponding, finally with clean towel inspection, so
After make PLC control system 9 shut down centrifugal high pressure fan 2 to complete drain operation, in the coiled pipe heat exchange module after drain operation
Without any ponding,
The invention has the advantages that
(1) it is poured water by big yield, water pressure test irrigation period is short, high production efficiency；
(2) it is purged and is drained by Wind Volume, the ponding in module after the water pressure test can be discharged completely, to eliminate because of mould
There is ponding in block and a series of failure hidden danger such as tube wall corrosion, pipe bursting by freezing for occurring, substantially prolongs the use of heat-exchanger rig
Service life, it is ensured that power plant's production run safety；
(3) structure of high pressure sealing banjo fixing butt jointing is simple, easy to operate, and dismounting is easy to maintenance, time saving and energy saving, substantially increases work
Make efficiency；
(4) structure of nozzle end socket is simple and convenient to operate, use cost is low, the good fixing effect with pipe end；It can bear higher
Pressure, and Acceptable life is long；Without exiting the parts such as the locking nut on center bolt, so that it may tear locking positioning ring open
Lower carry out repair and replacement, simplify maintenance procedures, improve maintenance efficiency；
(5) structure of pipe end joint is simple, the good fixing effect with pipe end, and stability in use is high；Sealing effect between pipe end
Fruit is good, and pressure-bearing is high, provides effective guarantee for being normally carried out for the water pressure test；It is easy to operate, long service life, use cost
Low, dismounting is easy to maintenance, when especially repairing to tube expansion, can incite somebody to action without exiting the parts such as the locking nut on central tube
Tube expansion removes carry out repair and replacement, simplifies maintenance procedures, improves maintenance efficiency；It is vdiverse in function, it can be real-time by pressure gauge
Accurately understand the real-time pressure inside coiled pipe heat exchange module.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any other form, and
Any modification made by according to the technical essence of the invention or equivalent variations, still fall within the scope of protection of present invention.
Claims (10)
1. a kind of coiled pipe heat exchange module hydraulic test method, it is characterised in that: the following steps are included:
Step (1): first by the header water inlet pipe of high-pressure hydraulic pump connection coiled pipe heat exchange module, then hydraulic press is connected into coiled pipe and is changed
The header exhaust pipe of thermal modules；
Step (2): starting high-pressure hydraulic pump, water is quickly poured into coiled pipe heat exchange module and to coiled pipe heat exchange module inside
Rubbish incidental carries out punching and sweeps；When filled in coiled pipe heat exchange module water and from header drainpipe flow out water without rubbish incidental when,
Shut down high-pressure hydraulic pump；Then header drainpipe is blocked with nozzle end socket；
Step (3): starting hydraulic press boosts to coiled pipe heat exchange module, rises to the pressure in coiled pipe heat exchange module
After module operating pressures, stops boosting and carry out preliminary leak test, be further continued for boosting to module test pressure after firmly believing No leakage
Power is then turned off hydraulic press pressure maintaining certain time and carries out second of leak test, is then depressurized to module operating pressures and goes forward side by side
Row third time leak test, no leakage are qualification；
Step (4): unloading the nozzle end socket on lower header drainpipe, releases the water in coiled pipe heat exchange module, then by high pressure from
The heart blower connection coiled pipe heat exchange module header water inlet pipe simultaneously start centrifugal high pressure fan, to inside coiled pipe heat exchange module into
The purging draining of row Wind Volume, continuous purging shut down high pressure to the anhydrous water clock of header drainpipe nozzle and when header bottom is without ponding
Centrifugal blower.
2. a kind of coiled pipe heat exchange module hydraulic test method according to claim 1, it is characterised in that: high-pressure hydraulic pump with
Centrifugal high pressure fan is connected simultaneously by commutation connecting tube group and mutually seals the high pressure sealing banjo fixing butt jointing docked with header water inlet pipe,
Commutation connecting tube group can make high pressure sealing banjo fixing butt jointing only be connected with high-pressure hydraulic pump or only be connected with centrifugal high pressure fan.
3. a kind of coiled pipe heat exchange module hydraulic test method according to claim 2, it is characterised in that: commutation connecting tube
The structure of group includes: water inlet pipe that the outlet with high-pressure hydraulic pump is connected, be connected with the outlet of centrifugal high pressure fan into
Wind branch pipe, the connection general pipeline and three-way diverter valve being connected with high pressure sealing banjo fixing butt jointing, two of the three-way diverter valve
Import is connected with water inlet pipe and winding pipe respectively, and the outlet of the three-way diverter valve is connected with general pipeline is connect.
4. a kind of coiled pipe heat exchange module hydraulic test method according to claim 2, it is characterised in that: high pressure sealing pair
The structure of connector includes: the adapter tube and casing being sequentially distributed along waterflood direction, separate set in the two sides pipe end of the adapter tube
One end of pipe is water inlet end, close to one end of casing is water outlet, and the water outlet of adapter tube is provided with pipe connecting flange disk, the set
One end of close adapter tube is water inlet end in the two sides pipe end of pipe, one end far from adapter tube is water outlet, is set in the water outlet of casing
It is equipped with the fixed mechanism casing and header water inlet pipe to be sealed connected together, the water inlet end of casing is provided with tiretube process
Blue disk is provided centrally with spring positioning platform in casing flange disk, and spring positioning platform is circumferentially fixed in spring by several
Spoke bar outside the platform of position is connected with casing flange disk；It is provided between casing flange disk and pipe connecting flange disk will cover
The stay tube being connected with adapter tube is managed, water passage, adapter tube, stay tube and casing three is collectively formed in adapter tube, stay tube and casing three
It is connected to a fixed together by fastening assembly, only open gate is provided between spring positioning platform and the water outlet of adapter tube, is only led to
Be connected with spring between door and spring positioning platform, spring make only open gate there is becoming for the water outlet end face for being pressed on adapter tube always
Gesture；When the hydraulic pressure for taking over side is greater than the sum of acting force of the spring and casing side hydraulic pressure, only open gate is under the action of adapter tube side hydraulic pressure
Adapter tube water outlet end face can be left, to open water passage, when the hydraulic pressure of casing side is greater than the hydraulic pressure of adapter tube side, only open gate
On the water outlet end face that adapter tube can be pressed under the collective effect of casing side hydraulic pressure and spring, to cut off water passage.
5. a kind of coiled pipe heat exchange module hydraulic test method according to claim 4, it is characterised in that: fixed mechanism
Structure includes: the internal diameter that the internal diameter of the water outlet of casing is greater than the water inlet end of casing, to be formed at the variable diameter of internal surface of sleeve pipe
For header water inlet end surfaces against annular convex shoulder, seal washer is provided on annular convex shoulder；Outside the water outlet of casing
Fixing sleeve is respectively arranged with one axially through the mounting hole for pricking hoop disk equipped with hoop disk is pricked, in the quadrangle for pricking hoop disk；It further include two
Root can be stuck in the U-shaped in header and prick hoop, and the outer end for the two sides straight section that every U-shaped pricks hoop is thread segment, and two U-shapeds prick hoop point
A pair of of mounting hole of the hoop upper and lower two sides of disk Dui Ying not be pricked, every U-shaped bundle hoop is stuck in header by U-shaped bayonet and every U
Shape prick hoop two sides straight section be each passed through corresponding mounting hole and be threaded with locking nut, screw all locking nuts, make into
The end face of outlet pipe is pressed on the seal washer of casing annular convex shoulder, to make inlet and outlet pipes and cover the casing outside it
It is sealed connected together.
6. a kind of coiled pipe heat exchange module hydraulic test method according to claim 4, it is characterised in that: fastening assembly
Structure include: it is circumferentially arranged on pipe connecting flange disk have several first through hole axially through pipe connecting flange disk, in tiretube process
It is circumferentially arranged on blue disk to have several the second through-holes axially through casing flange disk, the first through hole and casing of pipe connecting flange disk
Second through-hole of ring flange corresponds, and is equipped with a fastening spiral shell respectively in each pair of corresponding first through hole and the second through-hole
Bolt, the screw rod of every fastening bolt are threadedly coupled a fastening nut after passing through corresponding first through hole and the second through-hole respectively,
All fastening nuts are screwed, makes pipe connecting flange disk and casing flange disk is in opposite shape sealed clamping stay tube, to make casing, stay tube
And three is detachably connected is fixed together for adapter tube.
7. a kind of coiled pipe heat exchange module hydraulic test method according to claim 4, it is characterised in that: in casing flange
The annular positioning groove for stay tube insertion, the two sides pipe end point of stay tube are respectively arranged on the opposite side end face of disk and pipe connecting flange disk
Not Qian Ru the corresponding annular positioning groove in two sides, be placed with respectively in each annular positioning groove to sealing flange and stay tube it
Between gap the first seal washer；It is provided with the second seal washer between only open gate and adapter tube water outlet end face, when only open gate
When being pressed on adapter tube water outlet end face by the second seal washer, the second seal washer can seal only open gate and adapter tube water outlet end
Gap between face.
8. a kind of coiled pipe heat exchange module hydraulic test method according to claim 4, it is characterised in that: in every spoke bar
On be separately installed with the conduit for axially extending to pipe connecting flange disk, all conduits are centered around on the outside of only open gate, all conduits
The guide channel that only open gate can be made accurately to be moved to adapter tube water outlet end face is collectively formed.
9. a kind of coiled pipe heat exchange module hydraulic test method according to claim 1, it is characterised in that: hydraulic press passes through
It is set to the pipe end joint sealing docking header exhaust pipe of its outlet connecting pipe pipe end, during the structure of the pipe end joint includes:
Empty central tube, is provided with pressure gauge in one end of central tube, pressure gauge is connected by the bypass pipe with check valve with central tube
It connects, is threadedly coupled on central tube there are two locking nut, is successively slidingly connected on the central tube between two locking nuts
Have a flexible sleeve and two push collar, be provided with locking positioning ring between two push collar, locking positioning ring by
The independent arc shaft tiles composition of several valves has convenient for arc bearing shell the outer wall of every valve arc shaft tile is peripherally disposed
Piece both ends are outward to receive swollen groove, and every valve arc shaft tile is in thin and thick middle shape setting along axial ends, makes to lock
The both ends of tight positioning ring are formed convenient for the tapered channel of push collar push-in, and when tightening locking nut, locking nut can be by two
Push collar is pushed into locking positioning ring along ipsilateral tapered channel, distinguishes the both ends of each valve arc shaft tile of locking positioning ring outside
Opening and pipe end inner wall phase swelling continue to tighten locking nut extruding flexible sleeve, are radially expanded flexible sleeve in sealing
Gap between heart pipe and pipe end inner wall.
10. a kind of coiled pipe heat exchange module hydraulic test method according to claim 1, it is characterised in that: nozzle end socket
Structure include: center bolt, a locking nut is threaded with respectively at the both ends of center bolt, in two locking nuts
Between center bolt on successively movable sleeve be equipped with a flexible sleeve and two push collar, set between two push collar
It is equipped with locking positioning ring, locking positioning ring is made of the independent arc shaft tile of several valves, in the outer wall of every valve arc shaft tile
Peripherally disposed to have convenient for the outward swollen groove of receipts in arc shaft tile both ends, every valve arc shaft tile is in along axial two
It holds thin and thick middle shape to be arranged, forms the both ends of locking positioning ring convenient for the tapered channel of push collar push-in, tightening
When locking nut, two push collar can be pushed into locking positioning ring along ipsilateral tapered channel by locking nut, make locking positioning ring
The both ends of each valve arc shaft tile are flared out respectively to be positioned with internal wall of pipe orifice phase swelling, continues to tighten locking nut extruding flexibility
Casing makes flexible sleeve be radially expanded line up and is sealed.
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| CN201910762607.6A CN110441158B (en) | 2019-08-19 | 2019-08-19 | Water pressure test method for coiled tube heat exchange module |
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| CN110441158B (en) | 2022-04-05 |
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